2008-08-08 16:41:48 +00:00
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.\" This man page is Copyright (C) 1999 Andi Kleen <ak@muc.de>.
|
ldd.1, capget.2, clone.2, create_module.2, fallocate.2, futex.2, get_kernel_syms.2, get_thread_area.2, getcpu.2, getitimer.2, getpid.2, io_cancel.2, io_destroy.2, io_getevents.2, io_setup.2, io_submit.2, ioctl_list.2, mkdir.2, mknod.2, pciconfig_read.2, pivot_root.2, posix_fadvise.2, query_module.2, sendfile.2, set_thread_area.2, setns.2, unshare.2, __setfpucw.3, a64l.3, addseverity.3, argz_add.3, bindresvport.3, cabs.3, cacos.3, cacosh.3, canonicalize_file_name.3, carg.3, casin.3, casinh.3, catan.3, catanh.3, ccos.3, ccosh.3, cerf.3, cexp.3, cexp2.3, cimag.3, clog.3, clog10.3, clog2.3, cmsg.3, conj.3, cpow.3, cproj.3, creal.3, csin.3, csinh.3, csqrt.3, ctan.3, ctanh.3, des_crypt.3, envz_add.3, fdim.3, fma.3, fmax.3, fmemopen.3, fmin.3, fmtmsg.3, fpclassify.3, gamma.3, getpt.3, getrpcent.3, getrpcport.3, getttyent.3, isgreater.3, key_setsecret.3, lgamma.3, malloc_hook.3, mempcpy.3, nan.3, netlink.3, nextafter.3, putgrent.3, remove.3, remquo.3, rpc.3, rtime.3, rtnetlink.3, setaliasent.3, setnetgrent.3, signbit.3, significand.3, sincos.3, stdin.3, tgamma.3, xcrypt.3, xdr.3, cciss.4, hpsa.4, mouse.4, pts.4, sk98lin.4, tty_ioctl.4, wavelan.4, hosts.equiv.5, rpc.5, tzfile.5, boot.7, complex.7, ddp.7, fifo.7, futex.7, icmp.7, ip.7, ipv6.7, netdevice.7, netlink.7, packet.7, raw.7, rtnetlink.7, socket.7, tcp.7, udp.7, unix.7, x25.7, sync.8: Global fix: Put copyright info at top of page, followed by blank line and LICENSE
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-10 09:29:51 +00:00
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.\"
|
getcpu.2, sendfile.2, cmsg.3, rtnetlink.3, arp.7, ddp.7, fifo.7, icmp.7, ip.7, ipv6.7, netdevice.7, packet.7, raw.7, rtnetlink.7, socket.7, tcp.7, udp.7, unix.7, x25.7: LICENSE_START(VERBATIM_ONE_PARA)
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-10 09:29:00 +00:00
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.\" %%%LICENSE_START(VERBATIM_ONE_PARA)
|
2008-08-08 16:41:48 +00:00
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.\" Permission is granted to distribute possibly modified copies
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.\" of this page provided the header is included verbatim,
|
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.\" and in case of nontrivial modification author and date
|
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.\" of the modification is added to the header.
|
epoll_create.2, epoll_ctl.2, epoll_wait.2, eventfd.2, fallocate.2, futex.2, getcpu.2, getitimer.2, ioctl_list.2, ioprio_set.2, migrate_pages.2, move_pages.2, pciconfig_read.2, sendfile.2, setns.2, signalfd.2, spu_create.2, spu_run.2, sysinfo.2, timerfd_create.2, backtrace.3, cmsg.3, error.3, getpt.3, getrpcent.3, getrpcport.3, getsubopt.3, offsetof.3, program_invocation_name.3, rpc.3, rpmatch.3, rtnetlink.3, xdr.3, cciss.4, hpsa.4, pts.4, charmap.5, dir_colors.5, elf.5, gai.conf.5, locale.5, nscd.conf.5, nss.5, resolv.conf.5, rpc.5, arp.7, cpuset.7, ddp.7, epoll.7, fifo.7, futex.7, icmp.7, ip.7, ipv6.7, mailaddr.7, netdevice.7, packet.7, raw.7, regex.7, rtnetlink.7, socket.7, spufs.7, tcp.7, udp.7, unix.7, x25.7, ldconfig.8, nscd.8: Global fix: s/END_LICENSE/LICENSE_END/
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-12 09:26:07 +00:00
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.\" %%%LICENSE_END
|
networks.5, arp.7, cp1251.7, ddp.7, icmp.7, ip.7, ipv6.7, iso_8859-10.7, iso_8859-13.7, iso_8859-14.7, iso_8859-15.7, iso_8859-3.7, iso_8859-4.7, iso_8859-5.7, iso_8859-6.7, iso_8859-7.7, iso_8859-9.7, koi8-r.7, netdevice.7, netlink.7, packet.7, raw.7, rtnetlink.7, udp.7, x25.7, ld.so.8, sln.8, sync.8: srcfix
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-12 11:28:50 +00:00
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.\"
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2008-08-08 16:41:48 +00:00
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.\" $Id: packet.7,v 1.13 2000/08/14 08:03:45 ak Exp $
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networks.5, arp.7, cp1251.7, ddp.7, icmp.7, ip.7, ipv6.7, iso_8859-10.7, iso_8859-13.7, iso_8859-14.7, iso_8859-15.7, iso_8859-3.7, iso_8859-4.7, iso_8859-5.7, iso_8859-6.7, iso_8859-7.7, iso_8859-9.7, koi8-r.7, netdevice.7, netlink.7, packet.7, raw.7, rtnetlink.7, udp.7, x25.7, ld.so.8, sln.8, sync.8: srcfix
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-12 11:28:50 +00:00
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.\"
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_exit.2, capget.2, fcntl.2, futex.2, listen.2, memfd_create.2, modify_ldt.2, move_pages.2, open.2, perf_event_open.2, ptrace.2, set_thread_area.2, stime.2, syscall.2, sysctl.2, userfaultfd.2, cmsg.3, exit.3, ftime.3, getpt.3, malloc.3, console_codes.4, loop.4, inotify.7, netlink.7, packet.7, rtnetlink.7, tcp.7, unix.7, vsock.7, ldconfig.8: tstamp
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2020-02-09 10:53:28 +00:00
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.TH PACKET 7 2020-02-09 "Linux" "Linux Programmer's Manual"
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2008-08-08 16:41:48 +00:00
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.SH NAME
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2013-09-24 06:11:01 +00:00
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packet \- packet interface on device level
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2008-08-08 16:41:48 +00:00
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.SH SYNOPSIS
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.nf
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.B #include <sys/socket.h>
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2014-08-29 13:20:06 +00:00
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.B #include <linux/if_packet.h>
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2008-08-08 16:41:48 +00:00
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.B #include <net/ethernet.h> /* the L2 protocols */
|
_exit.2, bpf.2, cacheflush.2, capget.2, chdir.2, chmod.2, chroot.2, clock_getres.2, clock_nanosleep.2, close.2, connect.2, create_module.2, dup.2, epoll_create.2, epoll_ctl.2, epoll_wait.2, eventfd.2, execve.2, execveat.2, exit_group.2, fanotify_mark.2, flock.2, fork.2, fsync.2, futex.2, futimesat.2, get_kernel_syms.2, get_mempolicy.2, get_robust_list.2, getcpu.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getitimer.2, getpagesize.2, getpeername.2, getpid.2, getpriority.2, getrandom.2, getresuid.2, getrlimit.2, getrusage.2, getsid.2, getsockname.2, getsockopt.2, gettid.2, gettimeofday.2, getuid.2, getunwind.2, getxattr.2, idle.2, inotify_add_watch.2, inotify_init.2, inotify_rm_watch.2, ioctl.2, ioctl_fat.2, ioctl_ficlonerange.2, ioctl_fideduperange.2, ioctl_getfsmap.2, ioctl_tty.2, ioperm.2, iopl.2, keyctl.2, kill.2, link.2, listen.2, listxattr.2, llseek.2, lseek.2, madvise.2, mbind.2, membarrier.2, memfd_create.2, migrate_pages.2, mincore.2, mkdir.2, mknod.2, mlock.2, mmap.2, mmap2.2, modify_ldt.2, mount.2, move_pages.2, mprotect.2, mq_getsetattr.2, mremap.2, msgop.2, msync.2, nanosleep.2, nfsservctl.2, nice.2, pause.2, pciconfig_read.2, perf_event_open.2, perfmonctl.2, personality.2, pkey_alloc.2, poll.2, posix_fadvise.2, prctl.2, pread.2, process_vm_readv.2, ptrace.2, query_module.2, read.2, readahead.2, readdir.2, readv.2, reboot.2, recv.2, remap_file_pages.2, removexattr.2, rename.2, request_key.2, rmdir.2, rt_sigqueueinfo.2, sched_get_priority_max.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setparam.2, sched_setscheduler.2, sched_yield.2, select.2, select_tut.2, semctl.2, semget.2, semop.2, send.2, sendfile.2, set_mempolicy.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setns.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, setup.2, setxattr.2, sgetmask.2, shmctl.2, shmget.2, shutdown.2, sigaction.2, sigaltstack.2, sigpending.2, sigprocmask.2, sigsuspend.2, sigwaitinfo.2, socket.2, socketcall.2, socketpair.2, stat.2, statfs.2, stime.2, swapon.2, symlink.2, sync.2, sysctl.2, sysinfo.2, syslog.2, time.2, timer_create.2, timer_delete.2, timer_getoverrun.2, timer_settime.2, timerfd_create.2, times.2, tkill.2, truncate.2, umask.2, umount.2, uname.2, unlink.2, unshare.2, uselib.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vfork.2, vhangup.2, vm86.2, wait.2, wait4.2, write.2, CPU_SET.3, INFINITY.3, __ppc_get_timebase.3, __ppc_set_ppr_med.3, __ppc_yield.3, __setfpucw.3, a64l.3, abort.3, abs.3, acos.3, acosh.3, addseverity.3, adjtime.3, aio_cancel.3, aio_error.3, aio_fsync.3, aio_init.3, aio_read.3, aio_return.3, aio_suspend.3, aio_write.3, alloca.3, argz_add.3, asin.3, asinh.3, asprintf.3, assert.3, assert_perror.3, atan.3, atan2.3, atanh.3, atexit.3, atof.3, atoi.3, basename.3, bcmp.3, bcopy.3, bsd_signal.3, bsearch.3, bstring.3, btowc.3, byteorder.3, cabs.3, cacos.3, cacosh.3, canonicalize_file_name.3, carg.3, casin.3, casinh.3, catan.3, catanh.3, catopen.3, cbrt.3, ccos.3, ccosh.3, ceil.3, cexp.3, cexp2.3, cfree.3, cimag.3, clearenv.3, clock.3, clock_getcpuclockid.3, clog.3, clog10.3, clog2.3, closedir.3, cmsg.3, confstr.3, conj.3, copysign.3, cos.3, cosh.3, cpow.3, cproj.3, creal.3, crypt.3, csin.3, csinh.3, csqrt.3, ctan.3, ctanh.3, ctermid.3, ctime.3, daemon.3, difftime.3, dirfd.3, div.3, dlerror.3, dlopen.3, dlsym.3, drand48.3, drand48_r.3, duplocale.3, dysize.3, ecvt.3, ecvt_r.3, encrypt.3, endian.3, erf.3, erfc.3, err.3, errno.3, ether_aton.3, euidaccess.3, exec.3, exit.3, exp.3, exp10.3, exp2.3, expm1.3, fabs.3, fclose.3, fcloseall.3, fdim.3, fenv.3, ferror.3, fexecve.3, fflush.3, ffs.3, fgetc.3, fgetgrent.3, fgetpwent.3, fgetwc.3, fgetws.3, finite.3, flockfile.3, floor.3, fma.3, fmax.3, fmemopen.3, fmin.3, fmod.3, fmtmsg.3, fnmatch.3, fopen.3, fpathconf.3, fpclassify.3, fpurge.3, fputwc.3, fputws.3, fread.3, frexp.3, fseek.3, fseeko.3, ftime.3, ftok.3, fts.3, ftw.3, futimes.3, fwide.3, gamma.3, gcvt.3, get_nprocs_conf.3, get_phys_pages.3, getaddrinfo.3, getaddrinfo_a.3, getauxval.3, getcontext.3, getcwd.3, getdate.3, getdirentries.3, getdtablesize.3, getentropy.3, getenv.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getifaddrs.3, getipnodebyname.3, getline.3, getloadavg.3, getlogin.3, getmntent.3, getnameinfo.3, getnetent.3, getnetent_r.3, getopt.3, getpass.3, getprotoent.3, getprotoent_r.3, getpt.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent_r.3, getrpcport.3, gets.3, getservent.3, getservent_r.3, getspnam.3, getsubopt.3, getttyent.3, getumask.3, getusershell.3, getutent.3, getw.3, getwchar.3, glob.3, grantpt.3, group_member.3, gsignal.3, hsearch.3, hypot.3, iconv.3, iconv_close.3, iconv_open.3, if_nameindex.3, if_nametoindex.3, ilogb.3, index.3, inet.3, inet_net_pton.3, inet_ntop.3, infnan.3, initgroups.3, insque.3, isalpha.3, isatty.3, isfdtype.3, isgreater.3, iswalnum.3, iswalpha.3, iswblank.3, iswcntrl.3, iswctype.3, iswdigit.3, iswgraph.3, iswlower.3, iswprint.3, iswpunct.3, iswspace.3, iswupper.3, iswxdigit.3, j0.3, key_setsecret.3, killpg.3, ldexp.3, lgamma.3, localeconv.3, lockf.3, log.3, log10.3, log1p.3, log2.3, logb.3, login.3, lrint.3, lround.3, lsearch.3, lseek64.3, makecontext.3, malloc.3, malloc_get_state.3, malloc_hook.3, malloc_info.3, matherr.3, mblen.3, mbrlen.3, mbrtowc.3, mbsinit.3, mbsnrtowcs.3, mbsrtowcs.3, mbstowcs.3, mbtowc.3, mcheck.3, memccpy.3, memchr.3, memcmp.3, memcpy.3, memfrob.3, memmem.3, memmove.3, mempcpy.3, memset.3, mkdtemp.3, mkfifo.3, mkstemp.3, mktemp.3, modf.3, mpool.3, mq_close.3, mq_getattr.3, mq_notify.3, mq_open.3, mq_receive.3, mq_send.3, mq_unlink.3, mtrace.3, nan.3, netlink.3, newlocale.3, nextafter.3, nl_langinfo.3, offsetof.3, on_exit.3, open_memstream.3, opendir.3, openpty.3, perror.3, popen.3, posix_fallocate.3, posix_madvise.3, posix_memalign.3, posix_openpt.3, pow.3, pow10.3, printf.3, profil.3, psignal.3, pthread_atfork.3, pthread_attr_init.3, pthread_attr_setaffinity_np.3, pthread_attr_setdetachstate.3, pthread_attr_setguardsize.3, pthread_attr_setinheritsched.3, pthread_attr_setschedparam.3, pthread_attr_setschedpolicy.3, pthread_attr_setscope.3, pthread_attr_setstack.3, pthread_attr_setstackaddr.3, pthread_attr_setstacksize.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_detach.3, pthread_equal.3, pthread_exit.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_join.3, pthread_kill.3, pthread_rwlockattr_setkind_np.3, pthread_self.3, pthread_setaffinity_np.3, pthread_setcancelstate.3, pthread_setconcurrency.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_setschedprio.3, pthread_sigmask.3, pthread_sigqueue.3, pthread_testcancel.3, pthread_tryjoin_np.3, pthread_yield.3, ptsname.3, putenv.3, putgrent.3, putpwent.3, puts.3, putwchar.3, qecvt.3, qsort.3, raise.3, rand.3, random.3, random_r.3, rcmd.3, re_comp.3, readdir.3, realpath.3, remainder.3, remove.3, remquo.3, resolver.3, rewinddir.3, rexec.3, rint.3, round.3, rpmatch.3, rtime.3, rtnetlink.3, scalb.3, scalbln.3, scandir.3, scanf.3, sched_getcpu.3, seekdir.3, sem_close.3, sem_destroy.3, sem_getvalue.3, sem_init.3, sem_open.3, sem_post.3, sem_unlink.3, sem_wait.3, setaliasent.3, setbuf.3, setenv.3, setlocale.3, setlogmask.3, setnetgrent.3, shm_open.3, siginterrupt.3, signbit.3, significand.3, sigpause.3, sigqueue.3, sigset.3, sigvec.3, sigwait.3, sin.3, sincos.3, sinh.3, sleep.3, sockatmark.3, sqrt.3, statvfs.3, stdarg.3, stdio.3, stdio_ext.3, stpcpy.3, stpncpy.3, strcasecmp.3, strcat.3, strchr.3, strcmp.3, strcoll.3, strcpy.3, strdup.3, strerror.3, strfmon.3, strfromd.3, strfry.3, strftime.3, strlen.3, strnlen.3, strpbrk.3, strptime.3, strsep.3, strsignal.3, strspn.3, strstr.3, strtod.3, strtoimax.3, strtok.3, strtol.3, strtoul.3, strverscmp.3, strxfrm.3, swab.3, sysconf.3, syslog.3, system.3, sysv_signal.3, tan.3, tanh.3, tcgetpgrp.3, tcgetsid.3, telldir.3, tempnam.3, termios.3, tgamma.3, timegm.3, timeradd.3, tmpfile.3, tmpnam.3, toascii.3, toupper.3, towctrans.3, towlower.3, towupper.3, trunc.3, tsearch.3, ttyname.3, ttyslot.3, tzset.3, ualarm.3, ulimit.3, ungetwc.3, unlocked_stdio.3, unlockpt.3, updwtmp.3, uselocale.3, usleep.3, wcpcpy.3, wcpncpy.3, wcrtomb.3, wcscasecmp.3, wcscat.3, wcschr.3, wcscmp.3, wcscpy.3, wcscspn.3, wcsdup.3, wcslen.3, wcsncasecmp.3, wcsncat.3, wcsncmp.3, wcsncpy.3, wcsnlen.3, wcsnrtombs.3, wcspbrk.3, wcsrchr.3, wcsrtombs.3, wcsspn.3, wcsstr.3, wcstoimax.3, wcstok.3, wcstombs.3, wcswidth.3, wctob.3, wctomb.3, wctrans.3, wctype.3, wcwidth.3, wmemchr.3, wmemcmp.3, wmemcpy.3, wmemmove.3, wmemset.3, wordexp.3, wprintf.3, xcrypt.3, y0.3, dsp56k.4, random.4, rtc.4, st.4, ddp.7, ip.7, ipv6.7, packet.7, rtnetlink.7, socket.7, tcp.7, udp.7, udplite.7, x25.7: ffix
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-15 15:16:29 +00:00
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.PP
|
2008-08-08 16:47:53 +00:00
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.BI "packet_socket = socket(AF_PACKET, int " socket_type ", int "protocol );
|
2008-08-08 16:41:48 +00:00
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.fi
|
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|
.SH DESCRIPTION
|
|
|
|
Packet sockets are used to receive or send raw packets at the device driver
|
|
|
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(OSI Layer 2) level.
|
|
|
|
They allow the user to implement protocol modules in user space
|
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on top of the physical layer.
|
environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
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.PP
|
2008-08-08 16:41:48 +00:00
|
|
|
The
|
|
|
|
.I socket_type
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|
|
is either
|
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|
.B SOCK_RAW
|
2014-01-04 21:44:33 +00:00
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|
for raw packets including the link-level header or
|
2008-08-08 16:41:48 +00:00
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|
.B SOCK_DGRAM
|
2014-01-04 21:44:33 +00:00
|
|
|
for cooked packets with the link-level header removed.
|
|
|
|
The link-level header information is available in a common format in a
|
2015-03-27 11:24:57 +00:00
|
|
|
.IR sockaddr_ll
|
|
|
|
structure.
|
2008-08-08 16:41:48 +00:00
|
|
|
.I protocol
|
2014-01-04 21:52:45 +00:00
|
|
|
is the IEEE 802.3 protocol number in network byte order.
|
2008-08-08 16:41:48 +00:00
|
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|
See the
|
|
|
|
.I <linux/if_ether.h>
|
|
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|
include file for a list of allowed protocols.
|
|
|
|
When protocol
|
|
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|
is set to
|
2015-03-27 11:24:57 +00:00
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.BR htons(ETH_P_ALL) ,
|
2008-08-08 16:41:48 +00:00
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then all protocols are received.
|
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All incoming packets of that protocol type will be passed to the packet
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socket before they are passed to the protocols implemented in the kernel.
|
environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
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.PP
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2016-09-12 18:19:14 +00:00
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In order to create a packet socket, a process must have the
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2008-08-08 16:41:48 +00:00
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.B CAP_NET_RAW
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2016-09-12 18:19:14 +00:00
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capability in the user namespace that governs its network namespace.
|
environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
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.PP
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2008-08-08 16:41:48 +00:00
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.B SOCK_RAW
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packets are passed to and from the device driver without any changes in
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the packet data.
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When receiving a packet, the address is still parsed and
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passed in a standard
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.I sockaddr_ll
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address structure.
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2015-03-27 11:24:57 +00:00
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When transmitting a packet, the user-supplied buffer
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should contain the physical-layer header.
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2008-08-08 16:41:48 +00:00
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That packet is then
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queued unmodified to the network driver of the interface defined by the
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destination address.
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Some device drivers always add other headers.
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.B SOCK_RAW
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is similar to but not compatible with the obsolete
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2008-08-08 16:47:53 +00:00
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.B AF_INET/SOCK_PACKET
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2008-08-08 16:41:48 +00:00
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of Linux 2.0.
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environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
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.PP
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2008-08-08 16:41:48 +00:00
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.B SOCK_DGRAM
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operates on a slightly higher level.
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The physical header is removed before the packet is passed to the user.
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Packets sent through a
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.B SOCK_DGRAM
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2015-03-27 11:24:57 +00:00
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packet socket get a suitable physical-layer header based on the
|
2008-08-08 16:41:48 +00:00
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information in the
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|
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.I sockaddr_ll
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destination address before they are queued.
|
environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
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.PP
|
2015-03-27 11:22:00 +00:00
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By default, all packets of the specified protocol type
|
2008-08-08 16:41:48 +00:00
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|
are passed to a packet socket.
|
intro.1, _syscall.2, access.2, arch_prctl.2, cacheflush.2, chown.2, clock_getres.2, clone.2, create_module.2, fcntl.2, flock.2, get_kernel_syms.2, get_robust_list.2, get_thread_area.2, getcpu.2, getpriority.2, getrlimit.2, getrusage.2, ioprio_set.2, kexec_load.2, madvise.2, mbind.2, migrate_pages.2, mknod.2, mmap.2, mount.2, move_pages.2, mprotect.2, open.2, pause.2, pciconfig_read.2, perf_event_open.2, prctl.2, ptrace.2, query_module.2, read.2, reboot.2, recv.2, s390_runtime_instr.2, sched_setscheduler.2, select_tut.2, send.2, set_mempolicy.2, setfsgid.2, setfsuid.2, sigaction.2, spu_create.2, spu_run.2, stime.2, swapon.2, syslog.2, timer_create.2, timer_getoverrun.2, times.2, tkill.2, umount.2, unimplemented.2, ustat.2, vm86.2, wait.2, abs.3, aio_read.3, aio_write.3, bsd_signal.3, catgets.3, clearenv.3, cmsg.3, dbopen.3, dirfd.3, dlopen.3, exec.3, fenv.3, ferror.3, fmemopen.3, fnmatch.3, fopen.3, futimes.3, getaddrinfo.3, getifaddrs.3, getipnodebyname.3, hsearch.3, if_nameindex.3, inet_pton.3, mblen.3, mbrlen.3, mbsrtowcs.3, mbtowc.3, mcheck.3, memfrob.3, mq_notify.3, netlink.3, posix_memalign.3, printf.3, pthread_attr_setscope.3, pthread_cleanup_push.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setcancelstate.3, pthread_setconcurrency.3, raise.3, resolver.3, rpc.3, rtime.3, rtnetlink.3, scanf.3, setbuf.3, setnetgrent.3, shm_open.3, sigpause.3, sigset.3, sigwait.3, sockatmark.3, strcasecmp.3, strcmp.3, strdup.3, strftime.3, strptime.3, strsignal.3, strverscmp.3, sysv_signal.3, termios.3, wcrtomb.3, wcsnlen.3, wcsnrtombs.3, wcsrtombs.3, wctomb.3, wprintf.3, console_codes.4, cpuid.4, msr.4, rtc.4, sk98lin.4, st.4, tty.4, charmap.5, core.5, elf.5, hosts.equiv.5, proc.5, resolv.conf.5, services.5, slabinfo.5, arp.7, bootparam.7, capabilities.7, charsets.7, cpuset.7, ddp.7, epoll.7, feature_test_macros.7, futex.7, hier.7, icmp.7, inotify.7, ip.7, ipv6.7, man-pages.7, mdoc.7, mdoc.samples.7, netdevice.7, netlink.7, numa.7, packet.7, path_resolution.7, posixoptions.7, pthreads.7, raw.7, rtld-audit.7, rtnetlink.7, sem_overview.7, sigevent.7, socket.7, spufs.7, tcp.7, udp.7, unicode.7, uri.7, utf-8.7, intro.8, ldconfig.8, sync.8: Global fix: fix placement of word "only"
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-31 08:53:00 +00:00
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|
|
To get packets only from a specific interface use
|
2008-08-08 16:41:48 +00:00
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|
|
.BR bind (2)
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specifying an address in a
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.I struct sockaddr_ll
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|
to bind the packet socket to an interface.
|
2015-05-10 11:12:01 +00:00
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Fields used for binding are
|
2015-06-18 06:41:21 +00:00
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.IR sll_family
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(should be
|
2015-05-10 11:12:01 +00:00
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.BR AF_PACKET ),
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.IR sll_protocol ,
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and
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.IR sll_ifindex .
|
environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
|
|
|
.PP
|
2008-08-08 16:41:48 +00:00
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The
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.BR connect (2)
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operation is not supported on packet sockets.
|
environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
|
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|
.PP
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2008-08-08 16:41:48 +00:00
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When the
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.B MSG_TRUNC
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|
flag is passed to
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|
|
.BR recvmsg (2),
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|
.BR recv (2),
|
2015-03-27 11:24:57 +00:00
|
|
|
or
|
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|
.BR recvfrom (2),
|
2008-08-08 16:41:48 +00:00
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|
the real length of the packet on the wire is always returned,
|
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|
even when it is longer than the buffer.
|
intro.1, time.1, _syscall.2, accept.2, brk.2, capget.2, faccessat.2, futimesat.2, gethostname.2, intro.2, ioprio_set.2, kill.2, madvise.2, mlock.2, mount.2, msgget.2, perf_event_open.2, poll.2, readv.2, sched_rr_get_interval.2, sched_setscheduler.2, select.2, select_tut.2, shmget.2, stat.2, timer_create.2, ustat.2, vfork.2, wait.2, alloca.3, atexit.3, catopen.3, crypt.3, dbopen.3, fenv.3, fopen.3, getaddrinfo_a.3, gethostbyname.3, getutent.3, intro.3, login.3, mallopt.3, queue.3, regex.3, sigpause.3, sigsetops.3, stdio.3, strftime.3, strptime.3, sysconf.3, ttyslot.3, undocumented.3, cciss.4, console_codes.4, hpsa.4, initrd.4, intro.4, rtc.4, st.4, tty_ioctl.4, wavelan.4, acct.5, charmap.5, dir_colors.5, hosts.5, intro.5, termcap.5, utmp.5, intro.6, armscii-8.7, boot.7, bootparam.7, capabilities.7, cpuset.7, credentials.7, ddp.7, epoll.7, glob.7, intro.7, ip.7, ipv6.7, iso_8859-1.7, iso_8859-10.7, iso_8859-11.7, iso_8859-13.7, iso_8859-14.7, iso_8859-15.7, iso_8859-16.7, iso_8859-2.7, iso_8859-3.7, iso_8859-4.7, iso_8859-5.7, iso_8859-6.7, iso_8859-7.7, iso_8859-8.7, iso_8859-9.7, koi8-r.7, koi8-u.7, man-pages.7, man.7, math_error.7, netlink.7, numa.7, packet.7, path_resolution.7, pipe.7, pthreads.7, raw.7, rtnetlink.7, signal.7, socket.7, spufs.7, svipc.7, tcp.7, time.7, udp.7, udplite.7, unicode.7, unix.7, uri.7, utf-8.7, x25.7, intro.8: Global fix: use consistent capitalization in .SS headings
Capitalization in .SS sections across pages (and sometimes even
within a single page) is wildly inconsistent. Make it consistent.
Capitalize first word in heading, but otherwise use lower case,
except where English usage (e.g., proper nouns) or programming
language requirements (e.g., identifier names) dictate otherwise.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-02-24 14:08:38 +00:00
|
|
|
.SS Address types
|
2014-01-30 22:46:20 +00:00
|
|
|
The
|
|
|
|
.I sockaddr_ll
|
2015-03-27 11:24:57 +00:00
|
|
|
structure is a device-independent physical-layer address.
|
environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
|
|
|
.PP
|
2008-08-08 16:41:48 +00:00
|
|
|
.in +4n
|
execve.2, ioctl_console.2, ioctl_iflags.2, ioctl_ns.2, ioctl_userfaultfd.2, kcmp.2, kexec_load.2, keyctl.2, link.2, listxattr.2, membarrier.2, memfd_create.2, mmap.2, modify_ldt.2, mprotect.2, msgctl.2, nanosleep.2, open_by_handle_at.2, perf_event_open.2, poll.2, posix_fadvise.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, readdir.2, readv.2, recv.2, recvmmsg.2, request_key.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setscheduler.2, seccomp.2, select.2, select_tut.2, semctl.2, semop.2, send.2, sendmmsg.2, set_thread_area.2, setns.2, shmctl.2, shmget.2, sigaction.2, sigaltstack.2, signal.2, sigwaitinfo.2, stat.2, statfs.2, statx.2, sync_file_range.2, syscall.2, sysctl.2, sysinfo.2, tee.2, timer_create.2, timer_settime.2, timerfd_create.2, unshare.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vmsplice.2, wait.2, adjtime.3, aio_init.3, backtrace.3, basename.3, bswap.3, btree.3, clock_getcpuclockid.3, cmsg.3, confstr.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlinfo.3, dlopen.3, duplocale.3, encrypt.3, end.3, endian.3, err.3, errno.3, ether_aton.3, fgetgrent.3, fgetpwent.3, fmemopen.3, frexp.3, ftime.3, fts.3, getaddrinfo.3, getaddrinfo_a.3, getdate.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, getifaddrs.3, getipnodebyname.3, getmntent.3, getnameinfo.3, getnetent.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, glob.3, gnu_get_libc_version.3, hash.3, hsearch.3, if_nameindex.3, inet.3, inet_net_pton.3, inet_pton.3, insque.3, isalpha.3, makecontext.3, mallinfo.3, malloc_info.3, mallopt.3, matherr.3, mbstowcs.3, mcheck.3, memchr.3, mq_getattr.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, ntp_gettime.3, posix_openpt.3, printf.3, pthread_attr_init.3, pthread_attr_setschedparam.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_tryjoin_np.3, readdir.3, realpath.3, recno.3, regex.3, rpc.3, scanf.3, sched_getcpu.3, sem_wait.3, setaliasent.3, sigqueue.3, statvfs.3, strcat.3, strcpy.3, strftime.3, strtok.3, strtol.3, strverscmp.3, toupper.3, ttyslot.3, xdr.3, fuse.4, loop.4, rtc.4, st.4, acct.5, core.5, elf.5, slabinfo.5, aio.7, arp.7, capabilities.7, cgroup_namespaces.7, cgroups.7, ddp.7, fanotify.7, feature_test_macros.7, inode.7, inotify.7, ip.7, keyrings.7, locale.7, mount_namespaces.7, namespaces.7, netdevice.7, netlink.7, packet.7, pkeys.7, pthreads.7, sched.7, session-keyring.7, sock_diag.7, socket.7, spufs.7, udplite.7, unix.7, user_namespaces.7, vdso.7, x25.7, ld.so.8: Use consistent markup for code snippets
Change .nf/.fi to .EX/.EE
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-18 19:52:46 +00:00
|
|
|
.EX
|
2008-08-08 16:41:48 +00:00
|
|
|
struct sockaddr_ll {
|
|
|
|
unsigned short sll_family; /* Always AF_PACKET */
|
2015-03-27 11:24:57 +00:00
|
|
|
unsigned short sll_protocol; /* Physical-layer protocol */
|
2008-08-08 16:41:48 +00:00
|
|
|
int sll_ifindex; /* Interface number */
|
2012-03-05 21:35:30 +00:00
|
|
|
unsigned short sll_hatype; /* ARP hardware type */
|
2008-08-08 16:41:48 +00:00
|
|
|
unsigned char sll_pkttype; /* Packet type */
|
|
|
|
unsigned char sll_halen; /* Length of address */
|
2015-03-27 11:24:57 +00:00
|
|
|
unsigned char sll_addr[8]; /* Physical-layer address */
|
2008-08-08 16:41:48 +00:00
|
|
|
};
|
execve.2, ioctl_console.2, ioctl_iflags.2, ioctl_ns.2, ioctl_userfaultfd.2, kcmp.2, kexec_load.2, keyctl.2, link.2, listxattr.2, membarrier.2, memfd_create.2, mmap.2, modify_ldt.2, mprotect.2, msgctl.2, nanosleep.2, open_by_handle_at.2, perf_event_open.2, poll.2, posix_fadvise.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, readdir.2, readv.2, recv.2, recvmmsg.2, request_key.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setscheduler.2, seccomp.2, select.2, select_tut.2, semctl.2, semop.2, send.2, sendmmsg.2, set_thread_area.2, setns.2, shmctl.2, shmget.2, sigaction.2, sigaltstack.2, signal.2, sigwaitinfo.2, stat.2, statfs.2, statx.2, sync_file_range.2, syscall.2, sysctl.2, sysinfo.2, tee.2, timer_create.2, timer_settime.2, timerfd_create.2, unshare.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vmsplice.2, wait.2, adjtime.3, aio_init.3, backtrace.3, basename.3, bswap.3, btree.3, clock_getcpuclockid.3, cmsg.3, confstr.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlinfo.3, dlopen.3, duplocale.3, encrypt.3, end.3, endian.3, err.3, errno.3, ether_aton.3, fgetgrent.3, fgetpwent.3, fmemopen.3, frexp.3, ftime.3, fts.3, getaddrinfo.3, getaddrinfo_a.3, getdate.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, getifaddrs.3, getipnodebyname.3, getmntent.3, getnameinfo.3, getnetent.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, glob.3, gnu_get_libc_version.3, hash.3, hsearch.3, if_nameindex.3, inet.3, inet_net_pton.3, inet_pton.3, insque.3, isalpha.3, makecontext.3, mallinfo.3, malloc_info.3, mallopt.3, matherr.3, mbstowcs.3, mcheck.3, memchr.3, mq_getattr.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, ntp_gettime.3, posix_openpt.3, printf.3, pthread_attr_init.3, pthread_attr_setschedparam.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_tryjoin_np.3, readdir.3, realpath.3, recno.3, regex.3, rpc.3, scanf.3, sched_getcpu.3, sem_wait.3, setaliasent.3, sigqueue.3, statvfs.3, strcat.3, strcpy.3, strftime.3, strtok.3, strtol.3, strverscmp.3, toupper.3, ttyslot.3, xdr.3, fuse.4, loop.4, rtc.4, st.4, acct.5, core.5, elf.5, slabinfo.5, aio.7, arp.7, capabilities.7, cgroup_namespaces.7, cgroups.7, ddp.7, fanotify.7, feature_test_macros.7, inode.7, inotify.7, ip.7, keyrings.7, locale.7, mount_namespaces.7, namespaces.7, netdevice.7, netlink.7, packet.7, pkeys.7, pthreads.7, sched.7, session-keyring.7, sock_diag.7, socket.7, spufs.7, udplite.7, unix.7, user_namespaces.7, vdso.7, x25.7, ld.so.8: Use consistent markup for code snippets
Change .nf/.fi to .EX/.EE
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-18 19:52:46 +00:00
|
|
|
.EE
|
2008-08-08 16:41:48 +00:00
|
|
|
.in
|
environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
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.PP
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2015-03-27 11:54:14 +00:00
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The fields of this structure are as follows:
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.IP * 3
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2008-08-08 16:41:48 +00:00
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.I sll_protocol
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2014-01-04 21:52:45 +00:00
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is the standard ethernet protocol type in network byte order as defined
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2008-08-08 16:41:48 +00:00
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in the
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.I <linux/if_ether.h>
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include file.
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It defaults to the socket's protocol.
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2015-03-27 11:54:14 +00:00
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.IP *
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2008-08-08 16:41:48 +00:00
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.I sll_ifindex
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is the interface index of the interface
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(see
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.BR netdevice (7));
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0 matches any interface (only permitted for binding).
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.I sll_hatype
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2012-03-05 21:31:07 +00:00
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is an ARP type as defined in the
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2008-08-08 16:41:48 +00:00
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.I <linux/if_arp.h>
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include file.
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2015-03-27 11:54:14 +00:00
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.IP *
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2008-08-08 16:41:48 +00:00
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.I sll_pkttype
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contains the packet type.
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Valid types are
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.B PACKET_HOST
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for a packet addressed to the local host,
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.B PACKET_BROADCAST
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2015-03-27 11:24:57 +00:00
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for a physical-layer broadcast packet,
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2008-08-08 16:41:48 +00:00
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.B PACKET_MULTICAST
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2015-03-27 11:24:57 +00:00
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for a packet sent to a physical-layer multicast address,
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2008-08-08 16:41:48 +00:00
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.B PACKET_OTHERHOST
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for a packet to some other host that has been caught by a device driver
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in promiscuous mode, and
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.B PACKET_OUTGOING
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2015-03-27 11:24:57 +00:00
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for a packet originating from the local host that is looped back to a packet
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2008-08-08 16:41:48 +00:00
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socket.
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intro.1, _syscall.2, access.2, arch_prctl.2, cacheflush.2, chown.2, clock_getres.2, clone.2, create_module.2, fcntl.2, flock.2, get_kernel_syms.2, get_robust_list.2, get_thread_area.2, getcpu.2, getpriority.2, getrlimit.2, getrusage.2, ioprio_set.2, kexec_load.2, madvise.2, mbind.2, migrate_pages.2, mknod.2, mmap.2, mount.2, move_pages.2, mprotect.2, open.2, pause.2, pciconfig_read.2, perf_event_open.2, prctl.2, ptrace.2, query_module.2, read.2, reboot.2, recv.2, s390_runtime_instr.2, sched_setscheduler.2, select_tut.2, send.2, set_mempolicy.2, setfsgid.2, setfsuid.2, sigaction.2, spu_create.2, spu_run.2, stime.2, swapon.2, syslog.2, timer_create.2, timer_getoverrun.2, times.2, tkill.2, umount.2, unimplemented.2, ustat.2, vm86.2, wait.2, abs.3, aio_read.3, aio_write.3, bsd_signal.3, catgets.3, clearenv.3, cmsg.3, dbopen.3, dirfd.3, dlopen.3, exec.3, fenv.3, ferror.3, fmemopen.3, fnmatch.3, fopen.3, futimes.3, getaddrinfo.3, getifaddrs.3, getipnodebyname.3, hsearch.3, if_nameindex.3, inet_pton.3, mblen.3, mbrlen.3, mbsrtowcs.3, mbtowc.3, mcheck.3, memfrob.3, mq_notify.3, netlink.3, posix_memalign.3, printf.3, pthread_attr_setscope.3, pthread_cleanup_push.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setcancelstate.3, pthread_setconcurrency.3, raise.3, resolver.3, rpc.3, rtime.3, rtnetlink.3, scanf.3, setbuf.3, setnetgrent.3, shm_open.3, sigpause.3, sigset.3, sigwait.3, sockatmark.3, strcasecmp.3, strcmp.3, strdup.3, strftime.3, strptime.3, strsignal.3, strverscmp.3, sysv_signal.3, termios.3, wcrtomb.3, wcsnlen.3, wcsnrtombs.3, wcsrtombs.3, wctomb.3, wprintf.3, console_codes.4, cpuid.4, msr.4, rtc.4, sk98lin.4, st.4, tty.4, charmap.5, core.5, elf.5, hosts.equiv.5, proc.5, resolv.conf.5, services.5, slabinfo.5, arp.7, bootparam.7, capabilities.7, charsets.7, cpuset.7, ddp.7, epoll.7, feature_test_macros.7, futex.7, hier.7, icmp.7, inotify.7, ip.7, ipv6.7, man-pages.7, mdoc.7, mdoc.samples.7, netdevice.7, netlink.7, numa.7, packet.7, path_resolution.7, posixoptions.7, pthreads.7, raw.7, rtld-audit.7, rtnetlink.7, sem_overview.7, sigevent.7, socket.7, spufs.7, tcp.7, udp.7, unicode.7, uri.7, utf-8.7, intro.8, ldconfig.8, sync.8: Global fix: fix placement of word "only"
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-31 08:53:00 +00:00
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These types make sense only for receiving.
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2015-03-27 11:54:14 +00:00
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.IP *
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2008-08-08 16:41:48 +00:00
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.I sll_addr
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and
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.I sll_halen
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2015-03-27 11:24:57 +00:00
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contain the physical-layer (e.g., IEEE 802.3) address and its length.
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2008-08-08 16:41:48 +00:00
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The exact interpretation depends on the device.
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2015-03-27 11:54:14 +00:00
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.PP
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2015-03-27 11:24:57 +00:00
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When you send packets, it is enough to specify
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2008-08-08 16:41:48 +00:00
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.IR sll_family ,
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.IR sll_addr ,
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.IR sll_halen ,
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packet.7: Add sll_protocol to list of required fields for outbound packets
The manpage packet(7) currently states that:
"When you send packets it is enough to specify sll_family, sll_addr,
sll_halen, sll_ifindex."
This is incorrect: you also need to specify sll_protocol.
(The protocol specified when the socket is created is used for
filtering inbound packets, but not for constructing outbound
packets.)
I encountered this while researching a page for my website:
http://www.microhowto.info/howto/send_an_arbitrary_ethernet_frame_using_an_af_packet_socket_in_c.html
To empirically verify the behaviour I took my test code from the
above page then changed it to use different values for the third
argument to socket() and the sll_protocol field:
- socket created with ETH_P_ARP, packet sent with ETH_P_ARP:
packet sent with EtherType of ETH_P_ARP
- socket created with ETH_P_ARP, sll_protocol==0:
packet sent with EtherType of 0
- socket created with 0x88b5, sll_protocol==htons(ETH_P_ARP):
packet sent with EtherType of ETH_P_ARP
- socket created with ETH_P_ARP, sll_protocol==htons(0x88b5):
packet sent with EtherType of 0x88b5
This shows that leaving sll_protocol set to zero does not have
the desired effect and that it needs to be set to the desired
link-layer protocol.
There is code in the relevant kernel source file
(net/packet/af_packet.c) which appears to inspect the value of the
sll_protocol field and use it as the link-layer protocol number,
however I am not sufficiently familiar with this subsystem to be
fully confident of what is happening. The line in question is:
proto = saddr->sll_protocol;
In version 3.4 of the kernel this can be found in the functions
packet_snd and tpacket_snd. In version 2.6.26 it is in packet_sendmsg.
Below is a patch that adds sll_protocol to the list of required fields.
This may not be the whole truth, since it is not clear what role if any
sll_protocol, sll_halen or sll_addr would play when the socket type is
SOCK_RAW, however I'm confident it is more accurate than the page as it
stands at present.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2015-05-06 13:01:52 +00:00
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.IR sll_ifindex ,
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and
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.IR sll_protocol .
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2008-08-08 16:41:48 +00:00
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The other fields should be 0.
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.I sll_hatype
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and
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.I sll_pkttype
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are set on received packets for your information.
|
intro.1, time.1, _syscall.2, accept.2, brk.2, capget.2, faccessat.2, futimesat.2, gethostname.2, intro.2, ioprio_set.2, kill.2, madvise.2, mlock.2, mount.2, msgget.2, perf_event_open.2, poll.2, readv.2, sched_rr_get_interval.2, sched_setscheduler.2, select.2, select_tut.2, shmget.2, stat.2, timer_create.2, ustat.2, vfork.2, wait.2, alloca.3, atexit.3, catopen.3, crypt.3, dbopen.3, fenv.3, fopen.3, getaddrinfo_a.3, gethostbyname.3, getutent.3, intro.3, login.3, mallopt.3, queue.3, regex.3, sigpause.3, sigsetops.3, stdio.3, strftime.3, strptime.3, sysconf.3, ttyslot.3, undocumented.3, cciss.4, console_codes.4, hpsa.4, initrd.4, intro.4, rtc.4, st.4, tty_ioctl.4, wavelan.4, acct.5, charmap.5, dir_colors.5, hosts.5, intro.5, termcap.5, utmp.5, intro.6, armscii-8.7, boot.7, bootparam.7, capabilities.7, cpuset.7, credentials.7, ddp.7, epoll.7, glob.7, intro.7, ip.7, ipv6.7, iso_8859-1.7, iso_8859-10.7, iso_8859-11.7, iso_8859-13.7, iso_8859-14.7, iso_8859-15.7, iso_8859-16.7, iso_8859-2.7, iso_8859-3.7, iso_8859-4.7, iso_8859-5.7, iso_8859-6.7, iso_8859-7.7, iso_8859-8.7, iso_8859-9.7, koi8-r.7, koi8-u.7, man-pages.7, man.7, math_error.7, netlink.7, numa.7, packet.7, path_resolution.7, pipe.7, pthreads.7, raw.7, rtnetlink.7, signal.7, socket.7, spufs.7, svipc.7, tcp.7, time.7, udp.7, udplite.7, unicode.7, unix.7, uri.7, utf-8.7, x25.7, intro.8: Global fix: use consistent capitalization in .SS headings
Capitalization in .SS sections across pages (and sometimes even
within a single page) is wildly inconsistent. Make it consistent.
Capitalize first word in heading, but otherwise use lower case,
except where English usage (e.g., proper nouns) or programming
language requirements (e.g., identifier names) dictate otherwise.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-02-24 14:08:38 +00:00
|
|
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.SS Socket options
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
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Packet socket options are configured by calling
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.BR setsockopt (2)
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with level
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.BR SOL_PACKET .
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.TP
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.BR PACKET_ADD_MEMBERSHIP
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.PD 0
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.TP
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.BR PACKET_DROP_MEMBERSHIP
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.PD
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2015-03-27 11:24:57 +00:00
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Packet sockets can be used to configure physical-layer multicasting
|
2008-08-08 16:41:48 +00:00
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and promiscuous mode.
|
|
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.B PACKET_ADD_MEMBERSHIP
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
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|
adds a binding and
|
2008-08-08 16:41:48 +00:00
|
|
|
.B PACKET_DROP_MEMBERSHIP
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
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drops it.
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2008-08-08 16:41:48 +00:00
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They both expect a
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2014-01-04 21:44:33 +00:00
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.I packet_mreq
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2008-08-08 16:41:48 +00:00
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structure as argument:
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environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
|
|
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.IP
|
2008-08-08 16:41:48 +00:00
|
|
|
.in +4n
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execve.2, ioctl_console.2, ioctl_iflags.2, ioctl_ns.2, ioctl_userfaultfd.2, kcmp.2, kexec_load.2, keyctl.2, link.2, listxattr.2, membarrier.2, memfd_create.2, mmap.2, modify_ldt.2, mprotect.2, msgctl.2, nanosleep.2, open_by_handle_at.2, perf_event_open.2, poll.2, posix_fadvise.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, readdir.2, readv.2, recv.2, recvmmsg.2, request_key.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setscheduler.2, seccomp.2, select.2, select_tut.2, semctl.2, semop.2, send.2, sendmmsg.2, set_thread_area.2, setns.2, shmctl.2, shmget.2, sigaction.2, sigaltstack.2, signal.2, sigwaitinfo.2, stat.2, statfs.2, statx.2, sync_file_range.2, syscall.2, sysctl.2, sysinfo.2, tee.2, timer_create.2, timer_settime.2, timerfd_create.2, unshare.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vmsplice.2, wait.2, adjtime.3, aio_init.3, backtrace.3, basename.3, bswap.3, btree.3, clock_getcpuclockid.3, cmsg.3, confstr.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlinfo.3, dlopen.3, duplocale.3, encrypt.3, end.3, endian.3, err.3, errno.3, ether_aton.3, fgetgrent.3, fgetpwent.3, fmemopen.3, frexp.3, ftime.3, fts.3, getaddrinfo.3, getaddrinfo_a.3, getdate.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, getifaddrs.3, getipnodebyname.3, getmntent.3, getnameinfo.3, getnetent.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, glob.3, gnu_get_libc_version.3, hash.3, hsearch.3, if_nameindex.3, inet.3, inet_net_pton.3, inet_pton.3, insque.3, isalpha.3, makecontext.3, mallinfo.3, malloc_info.3, mallopt.3, matherr.3, mbstowcs.3, mcheck.3, memchr.3, mq_getattr.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, ntp_gettime.3, posix_openpt.3, printf.3, pthread_attr_init.3, pthread_attr_setschedparam.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_tryjoin_np.3, readdir.3, realpath.3, recno.3, regex.3, rpc.3, scanf.3, sched_getcpu.3, sem_wait.3, setaliasent.3, sigqueue.3, statvfs.3, strcat.3, strcpy.3, strftime.3, strtok.3, strtol.3, strverscmp.3, toupper.3, ttyslot.3, xdr.3, fuse.4, loop.4, rtc.4, st.4, acct.5, core.5, elf.5, slabinfo.5, aio.7, arp.7, capabilities.7, cgroup_namespaces.7, cgroups.7, ddp.7, fanotify.7, feature_test_macros.7, inode.7, inotify.7, ip.7, keyrings.7, locale.7, mount_namespaces.7, namespaces.7, netdevice.7, netlink.7, packet.7, pkeys.7, pthreads.7, sched.7, session-keyring.7, sock_diag.7, socket.7, spufs.7, udplite.7, unix.7, user_namespaces.7, vdso.7, x25.7, ld.so.8: Use consistent markup for code snippets
Change .nf/.fi to .EX/.EE
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-18 19:52:46 +00:00
|
|
|
.EX
|
2008-08-08 16:41:48 +00:00
|
|
|
struct packet_mreq {
|
|
|
|
int mr_ifindex; /* interface index */
|
|
|
|
unsigned short mr_type; /* action */
|
|
|
|
unsigned short mr_alen; /* address length */
|
2015-03-27 11:24:57 +00:00
|
|
|
unsigned char mr_address[8]; /* physical-layer address */
|
2008-08-08 16:41:48 +00:00
|
|
|
};
|
execve.2, ioctl_console.2, ioctl_iflags.2, ioctl_ns.2, ioctl_userfaultfd.2, kcmp.2, kexec_load.2, keyctl.2, link.2, listxattr.2, membarrier.2, memfd_create.2, mmap.2, modify_ldt.2, mprotect.2, msgctl.2, nanosleep.2, open_by_handle_at.2, perf_event_open.2, poll.2, posix_fadvise.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, readdir.2, readv.2, recv.2, recvmmsg.2, request_key.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setscheduler.2, seccomp.2, select.2, select_tut.2, semctl.2, semop.2, send.2, sendmmsg.2, set_thread_area.2, setns.2, shmctl.2, shmget.2, sigaction.2, sigaltstack.2, signal.2, sigwaitinfo.2, stat.2, statfs.2, statx.2, sync_file_range.2, syscall.2, sysctl.2, sysinfo.2, tee.2, timer_create.2, timer_settime.2, timerfd_create.2, unshare.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vmsplice.2, wait.2, adjtime.3, aio_init.3, backtrace.3, basename.3, bswap.3, btree.3, clock_getcpuclockid.3, cmsg.3, confstr.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlinfo.3, dlopen.3, duplocale.3, encrypt.3, end.3, endian.3, err.3, errno.3, ether_aton.3, fgetgrent.3, fgetpwent.3, fmemopen.3, frexp.3, ftime.3, fts.3, getaddrinfo.3, getaddrinfo_a.3, getdate.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, getifaddrs.3, getipnodebyname.3, getmntent.3, getnameinfo.3, getnetent.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, glob.3, gnu_get_libc_version.3, hash.3, hsearch.3, if_nameindex.3, inet.3, inet_net_pton.3, inet_pton.3, insque.3, isalpha.3, makecontext.3, mallinfo.3, malloc_info.3, mallopt.3, matherr.3, mbstowcs.3, mcheck.3, memchr.3, mq_getattr.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, ntp_gettime.3, posix_openpt.3, printf.3, pthread_attr_init.3, pthread_attr_setschedparam.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_tryjoin_np.3, readdir.3, realpath.3, recno.3, regex.3, rpc.3, scanf.3, sched_getcpu.3, sem_wait.3, setaliasent.3, sigqueue.3, statvfs.3, strcat.3, strcpy.3, strftime.3, strtok.3, strtol.3, strverscmp.3, toupper.3, ttyslot.3, xdr.3, fuse.4, loop.4, rtc.4, st.4, acct.5, core.5, elf.5, slabinfo.5, aio.7, arp.7, capabilities.7, cgroup_namespaces.7, cgroups.7, ddp.7, fanotify.7, feature_test_macros.7, inode.7, inotify.7, ip.7, keyrings.7, locale.7, mount_namespaces.7, namespaces.7, netdevice.7, netlink.7, packet.7, pkeys.7, pthreads.7, sched.7, session-keyring.7, sock_diag.7, socket.7, spufs.7, udplite.7, unix.7, user_namespaces.7, vdso.7, x25.7, ld.so.8: Use consistent markup for code snippets
Change .nf/.fi to .EX/.EE
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-18 19:52:46 +00:00
|
|
|
.EE
|
2008-08-08 16:41:48 +00:00
|
|
|
.in
|
environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
|
|
|
.IP
|
2015-03-27 11:24:57 +00:00
|
|
|
.I mr_ifindex
|
2008-08-08 16:41:48 +00:00
|
|
|
contains the interface index for the interface whose status
|
|
|
|
should be changed.
|
|
|
|
The
|
2015-03-27 11:24:57 +00:00
|
|
|
.I mr_type
|
|
|
|
field specifies which action to perform.
|
2008-08-08 16:41:48 +00:00
|
|
|
.B PACKET_MR_PROMISC
|
|
|
|
enables receiving all packets on a shared medium (often known as
|
|
|
|
"promiscuous mode"),
|
|
|
|
.B PACKET_MR_MULTICAST
|
2015-03-27 11:24:57 +00:00
|
|
|
binds the socket to the physical-layer multicast group specified in
|
|
|
|
.I mr_address
|
2008-08-08 16:41:48 +00:00
|
|
|
and
|
2015-03-27 11:24:57 +00:00
|
|
|
.IR mr_alen ,
|
2008-08-08 16:41:48 +00:00
|
|
|
and
|
|
|
|
.B PACKET_MR_ALLMULTI
|
|
|
|
sets the socket up to receive all multicast packets arriving at
|
|
|
|
the interface.
|
environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
|
|
|
.IP
|
2014-01-10 17:21:00 +00:00
|
|
|
In addition, the traditional ioctls
|
2008-08-08 16:41:48 +00:00
|
|
|
.BR SIOCSIFFLAGS ,
|
|
|
|
.BR SIOCADDMULTI ,
|
|
|
|
.B SIOCDELMULTI
|
|
|
|
can be used for the same purpose.
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
.TP
|
|
|
|
.BR PACKET_AUXDATA " (since Linux 2.6.21)"
|
|
|
|
.\" commit 8dc4194474159660d7f37c495e3fc3f10d0db8cc
|
|
|
|
If this binary option is enabled, the packet socket passes a metadata
|
|
|
|
structure along with each packet in the
|
|
|
|
.BR recvmsg (2)
|
|
|
|
control field.
|
|
|
|
The structure can be read with
|
|
|
|
.BR cmsg (3).
|
|
|
|
It is defined as
|
environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
|
|
|
.IP
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
.in +4n
|
execve.2, ioctl_console.2, ioctl_iflags.2, ioctl_ns.2, ioctl_userfaultfd.2, kcmp.2, kexec_load.2, keyctl.2, link.2, listxattr.2, membarrier.2, memfd_create.2, mmap.2, modify_ldt.2, mprotect.2, msgctl.2, nanosleep.2, open_by_handle_at.2, perf_event_open.2, poll.2, posix_fadvise.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, readdir.2, readv.2, recv.2, recvmmsg.2, request_key.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setscheduler.2, seccomp.2, select.2, select_tut.2, semctl.2, semop.2, send.2, sendmmsg.2, set_thread_area.2, setns.2, shmctl.2, shmget.2, sigaction.2, sigaltstack.2, signal.2, sigwaitinfo.2, stat.2, statfs.2, statx.2, sync_file_range.2, syscall.2, sysctl.2, sysinfo.2, tee.2, timer_create.2, timer_settime.2, timerfd_create.2, unshare.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vmsplice.2, wait.2, adjtime.3, aio_init.3, backtrace.3, basename.3, bswap.3, btree.3, clock_getcpuclockid.3, cmsg.3, confstr.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlinfo.3, dlopen.3, duplocale.3, encrypt.3, end.3, endian.3, err.3, errno.3, ether_aton.3, fgetgrent.3, fgetpwent.3, fmemopen.3, frexp.3, ftime.3, fts.3, getaddrinfo.3, getaddrinfo_a.3, getdate.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, getifaddrs.3, getipnodebyname.3, getmntent.3, getnameinfo.3, getnetent.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, glob.3, gnu_get_libc_version.3, hash.3, hsearch.3, if_nameindex.3, inet.3, inet_net_pton.3, inet_pton.3, insque.3, isalpha.3, makecontext.3, mallinfo.3, malloc_info.3, mallopt.3, matherr.3, mbstowcs.3, mcheck.3, memchr.3, mq_getattr.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, ntp_gettime.3, posix_openpt.3, printf.3, pthread_attr_init.3, pthread_attr_setschedparam.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_tryjoin_np.3, readdir.3, realpath.3, recno.3, regex.3, rpc.3, scanf.3, sched_getcpu.3, sem_wait.3, setaliasent.3, sigqueue.3, statvfs.3, strcat.3, strcpy.3, strftime.3, strtok.3, strtol.3, strverscmp.3, toupper.3, ttyslot.3, xdr.3, fuse.4, loop.4, rtc.4, st.4, acct.5, core.5, elf.5, slabinfo.5, aio.7, arp.7, capabilities.7, cgroup_namespaces.7, cgroups.7, ddp.7, fanotify.7, feature_test_macros.7, inode.7, inotify.7, ip.7, keyrings.7, locale.7, mount_namespaces.7, namespaces.7, netdevice.7, netlink.7, packet.7, pkeys.7, pthreads.7, sched.7, session-keyring.7, sock_diag.7, socket.7, spufs.7, udplite.7, unix.7, user_namespaces.7, vdso.7, x25.7, ld.so.8: Use consistent markup for code snippets
Change .nf/.fi to .EX/.EE
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-18 19:52:46 +00:00
|
|
|
.EX
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
struct tpacket_auxdata {
|
|
|
|
__u32 tp_status;
|
|
|
|
__u32 tp_len; /* packet length */
|
|
|
|
__u32 tp_snaplen; /* captured length */
|
|
|
|
__u16 tp_mac;
|
|
|
|
__u16 tp_net;
|
|
|
|
__u16 tp_vlan_tci;
|
2019-12-12 08:54:54 +00:00
|
|
|
__u16 tp_vlan_tpid; /* Since Linux 3.14; earlier, these
|
|
|
|
were unused padding bytes */
|
|
|
|
.\" commit a0cdfcf39362410d5ea983f4daf67b38de129408 added tp_vlan_tpid
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
};
|
execve.2, ioctl_console.2, ioctl_iflags.2, ioctl_ns.2, ioctl_userfaultfd.2, kcmp.2, kexec_load.2, keyctl.2, link.2, listxattr.2, membarrier.2, memfd_create.2, mmap.2, modify_ldt.2, mprotect.2, msgctl.2, nanosleep.2, open_by_handle_at.2, perf_event_open.2, poll.2, posix_fadvise.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, readdir.2, readv.2, recv.2, recvmmsg.2, request_key.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setscheduler.2, seccomp.2, select.2, select_tut.2, semctl.2, semop.2, send.2, sendmmsg.2, set_thread_area.2, setns.2, shmctl.2, shmget.2, sigaction.2, sigaltstack.2, signal.2, sigwaitinfo.2, stat.2, statfs.2, statx.2, sync_file_range.2, syscall.2, sysctl.2, sysinfo.2, tee.2, timer_create.2, timer_settime.2, timerfd_create.2, unshare.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vmsplice.2, wait.2, adjtime.3, aio_init.3, backtrace.3, basename.3, bswap.3, btree.3, clock_getcpuclockid.3, cmsg.3, confstr.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlinfo.3, dlopen.3, duplocale.3, encrypt.3, end.3, endian.3, err.3, errno.3, ether_aton.3, fgetgrent.3, fgetpwent.3, fmemopen.3, frexp.3, ftime.3, fts.3, getaddrinfo.3, getaddrinfo_a.3, getdate.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, getifaddrs.3, getipnodebyname.3, getmntent.3, getnameinfo.3, getnetent.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, glob.3, gnu_get_libc_version.3, hash.3, hsearch.3, if_nameindex.3, inet.3, inet_net_pton.3, inet_pton.3, insque.3, isalpha.3, makecontext.3, mallinfo.3, malloc_info.3, mallopt.3, matherr.3, mbstowcs.3, mcheck.3, memchr.3, mq_getattr.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, ntp_gettime.3, posix_openpt.3, printf.3, pthread_attr_init.3, pthread_attr_setschedparam.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_tryjoin_np.3, readdir.3, realpath.3, recno.3, regex.3, rpc.3, scanf.3, sched_getcpu.3, sem_wait.3, setaliasent.3, sigqueue.3, statvfs.3, strcat.3, strcpy.3, strftime.3, strtok.3, strtol.3, strverscmp.3, toupper.3, ttyslot.3, xdr.3, fuse.4, loop.4, rtc.4, st.4, acct.5, core.5, elf.5, slabinfo.5, aio.7, arp.7, capabilities.7, cgroup_namespaces.7, cgroups.7, ddp.7, fanotify.7, feature_test_macros.7, inode.7, inotify.7, ip.7, keyrings.7, locale.7, mount_namespaces.7, namespaces.7, netdevice.7, netlink.7, packet.7, pkeys.7, pthreads.7, sched.7, session-keyring.7, sock_diag.7, socket.7, spufs.7, udplite.7, unix.7, user_namespaces.7, vdso.7, x25.7, ld.so.8: Use consistent markup for code snippets
Change .nf/.fi to .EX/.EE
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-18 19:52:46 +00:00
|
|
|
.EE
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
.in
|
|
|
|
.TP
|
|
|
|
.BR PACKET_FANOUT " (since Linux 3.1)"
|
|
|
|
.\" commit dc99f600698dcac69b8f56dda9a8a00d645c5ffc
|
|
|
|
To scale processing across threads, packet sockets can form a fanout
|
|
|
|
group.
|
|
|
|
In this mode, each matching packet is enqueued onto only one
|
|
|
|
socket in the group.
|
|
|
|
A socket joins a fanout group by calling
|
|
|
|
.BR setsockopt (2)
|
|
|
|
with level
|
|
|
|
.B SOL_PACKET
|
|
|
|
and option
|
|
|
|
.BR PACKET_FANOUT .
|
|
|
|
Each network namespace can have up to 65536 independent groups.
|
|
|
|
A socket selects a group by encoding the ID in the first 16 bits of
|
|
|
|
the integer option value.
|
|
|
|
The first packet socket to join a group implicitly creates it.
|
|
|
|
To successfully join an existing group, subsequent packet sockets
|
2014-01-04 21:44:33 +00:00
|
|
|
must have the same protocol, device settings, fanout mode and
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
flags (see below).
|
|
|
|
Packet sockets can leave a fanout group only by closing the socket.
|
|
|
|
The group is deleted when the last socket is closed.
|
environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
|
|
|
.IP
|
2015-03-27 11:59:12 +00:00
|
|
|
Fanout supports multiple algorithms to spread traffic between sockets,
|
|
|
|
as follows:
|
|
|
|
.RS
|
|
|
|
.IP * 3
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
The default mode,
|
|
|
|
.BR PACKET_FANOUT_HASH ,
|
|
|
|
sends packets from the same flow to the same socket to maintain
|
|
|
|
per-flow ordering.
|
|
|
|
For each packet, it chooses a socket by taking the packet flow hash
|
|
|
|
modulo the number of sockets in the group, where a flow hash is a hash
|
2014-01-04 21:44:33 +00:00
|
|
|
over network-layer address and optional transport-layer port fields.
|
2015-03-27 11:59:12 +00:00
|
|
|
.IP *
|
2014-01-04 21:44:33 +00:00
|
|
|
The load-balance mode
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
.BR PACKET_FANOUT_LB
|
|
|
|
implements a round-robin algorithm.
|
2015-03-27 11:59:12 +00:00
|
|
|
.IP *
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
.BR PACKET_FANOUT_CPU
|
|
|
|
selects the socket based on the CPU that the packet arrived on.
|
2015-03-27 11:59:12 +00:00
|
|
|
.IP *
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
.BR PACKET_FANOUT_ROLLOVER
|
2015-03-27 11:24:57 +00:00
|
|
|
processes all data on a single socket, moving to the next when one
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
becomes backlogged.
|
2015-03-27 11:59:12 +00:00
|
|
|
.IP *
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
.BR PACKET_FANOUT_RND
|
2014-01-04 21:44:33 +00:00
|
|
|
selects the socket using a pseudo-random number generator.
|
2015-03-27 11:59:12 +00:00
|
|
|
.IP *
|
2014-01-28 12:16:15 +00:00
|
|
|
.BR PACKET_FANOUT_QM
|
2014-02-22 09:43:54 +00:00
|
|
|
.\" commit 2d36097d26b5991d71a2cf4a20c1a158f0f1bfcd
|
|
|
|
(available since Linux 3.14)
|
2014-01-28 12:16:15 +00:00
|
|
|
selects the socket using the recorded queue_mapping of the received skb.
|
2015-03-27 11:59:12 +00:00
|
|
|
.RE
|
|
|
|
.IP
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
Fanout modes can take additional options.
|
|
|
|
IP fragmentation causes packets from the same flow to have different
|
|
|
|
flow hashes.
|
|
|
|
The flag
|
|
|
|
.BR PACKET_FANOUT_FLAG_DEFRAG ,
|
2015-03-27 11:24:57 +00:00
|
|
|
if set, causes packets to be defragmented before fanout is applied, to
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
preserve order even in this case.
|
|
|
|
Fanout mode and options are communicated in the second 16 bits of the
|
|
|
|
integer option value.
|
|
|
|
The flag
|
|
|
|
.BR PACKET_FANOUT_FLAG_ROLLOVER
|
|
|
|
enables the roll over mechanism as a backup strategy: if the
|
|
|
|
original fanout algorithm selects a backlogged socket, the packet
|
|
|
|
rolls over to the next available one.
|
|
|
|
.TP
|
2014-01-04 21:44:33 +00:00
|
|
|
.BR PACKET_LOSS " (with " PACKET_TX_RING )
|
2014-04-29 12:05:37 +00:00
|
|
|
When a malformed packet is encountered on a transmit ring,
|
|
|
|
the default is to reset its
|
2014-04-29 11:57:47 +00:00
|
|
|
.I tp_status
|
|
|
|
to
|
2014-04-22 16:01:59 +00:00
|
|
|
.BR TP_STATUS_WRONG_FORMAT
|
2014-04-29 11:57:47 +00:00
|
|
|
and abort the transmission immediately.
|
2014-04-29 12:05:37 +00:00
|
|
|
The malformed packet blocks itself and subsequently enqueued packets from
|
2014-04-29 11:57:47 +00:00
|
|
|
being sent.
|
|
|
|
The format error must be fixed, the associated
|
|
|
|
.I tp_status
|
|
|
|
reset to
|
2014-04-29 12:05:37 +00:00
|
|
|
.BR TP_STATUS_SEND_REQUEST ,
|
2014-04-29 11:57:47 +00:00
|
|
|
and the transmission process restarted via
|
2014-04-29 12:05:37 +00:00
|
|
|
.BR send (2).
|
2014-04-22 18:56:56 +00:00
|
|
|
However, if
|
2014-04-22 16:01:59 +00:00
|
|
|
.BR PACKET_LOSS
|
2014-04-29 11:57:47 +00:00
|
|
|
is set, any malformed packet will be skipped, its
|
|
|
|
.I tp_status
|
|
|
|
reset to
|
2014-04-22 18:56:56 +00:00
|
|
|
.BR TP_STATUS_AVAILABLE ,
|
2014-04-22 16:01:59 +00:00
|
|
|
and the transmission process continued.
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
.TP
|
2014-01-04 21:44:33 +00:00
|
|
|
.BR PACKET_RESERVE " (with " PACKET_RX_RING )
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
By default, a packet receive ring writes packets immediately following the
|
|
|
|
metadata structure and alignment padding.
|
|
|
|
This integer option reserves additional headroom.
|
|
|
|
.TP
|
|
|
|
.BR PACKET_RX_RING
|
2014-01-04 22:00:31 +00:00
|
|
|
Create a memory-mapped ring buffer for asynchronous packet reception.
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
The packet socket reserves a contiguous region of application address
|
|
|
|
space, lays it out into an array of packet slots and copies packets
|
|
|
|
(up to
|
2014-01-30 16:08:02 +00:00
|
|
|
.IR tp_snaplen )
|
|
|
|
into subsequent slots.
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
Each packet is preceded by a metadata structure similar to
|
|
|
|
.IR tpacket_auxdata .
|
|
|
|
The protocol fields encode the offset to the data
|
|
|
|
from the start of the metadata header.
|
|
|
|
.I tp_net
|
|
|
|
stores the offset to the network layer.
|
|
|
|
If the packet socket is of type
|
|
|
|
.BR SOCK_DGRAM ,
|
|
|
|
then
|
|
|
|
.I tp_mac
|
|
|
|
is the same.
|
|
|
|
If it is of type
|
|
|
|
.BR SOCK_RAW ,
|
2014-01-04 21:44:33 +00:00
|
|
|
then that field stores the offset to the link-layer frame.
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
Packet socket and application communicate the head and tail of the ring
|
|
|
|
through the
|
|
|
|
.I tp_status
|
|
|
|
field.
|
2014-04-29 11:57:47 +00:00
|
|
|
The packet socket owns all slots with
|
|
|
|
.I tp_status
|
|
|
|
equal to
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
.BR TP_STATUS_KERNEL .
|
|
|
|
After filling a slot, it changes the status of the slot to transfer
|
|
|
|
ownership to the application.
|
2014-04-29 11:57:47 +00:00
|
|
|
During normal operation, the new
|
|
|
|
.I tp_status
|
|
|
|
value has at least the
|
2014-04-24 09:25:19 +00:00
|
|
|
.BR TP_STATUS_USER
|
|
|
|
bit set to signal that a received packet has been stored.
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
When the application has finished processing a packet, it transfers
|
2014-04-29 11:57:47 +00:00
|
|
|
ownership of the slot back to the socket by setting
|
|
|
|
.I tp_status
|
|
|
|
equal to
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
.BR TP_STATUS_KERNEL .
|
environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
|
|
|
.IP
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
Packet sockets implement multiple variants of the packet ring.
|
|
|
|
The implementation details are described in
|
|
|
|
.IR Documentation/networking/packet_mmap.txt
|
|
|
|
in the Linux kernel source tree.
|
|
|
|
.TP
|
|
|
|
.BR PACKET_STATISTICS
|
|
|
|
Retrieve packet socket statistics in the form of a structure
|
environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
|
|
|
.IP
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
.in +4n
|
execve.2, ioctl_console.2, ioctl_iflags.2, ioctl_ns.2, ioctl_userfaultfd.2, kcmp.2, kexec_load.2, keyctl.2, link.2, listxattr.2, membarrier.2, memfd_create.2, mmap.2, modify_ldt.2, mprotect.2, msgctl.2, nanosleep.2, open_by_handle_at.2, perf_event_open.2, poll.2, posix_fadvise.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, readdir.2, readv.2, recv.2, recvmmsg.2, request_key.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setscheduler.2, seccomp.2, select.2, select_tut.2, semctl.2, semop.2, send.2, sendmmsg.2, set_thread_area.2, setns.2, shmctl.2, shmget.2, sigaction.2, sigaltstack.2, signal.2, sigwaitinfo.2, stat.2, statfs.2, statx.2, sync_file_range.2, syscall.2, sysctl.2, sysinfo.2, tee.2, timer_create.2, timer_settime.2, timerfd_create.2, unshare.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vmsplice.2, wait.2, adjtime.3, aio_init.3, backtrace.3, basename.3, bswap.3, btree.3, clock_getcpuclockid.3, cmsg.3, confstr.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlinfo.3, dlopen.3, duplocale.3, encrypt.3, end.3, endian.3, err.3, errno.3, ether_aton.3, fgetgrent.3, fgetpwent.3, fmemopen.3, frexp.3, ftime.3, fts.3, getaddrinfo.3, getaddrinfo_a.3, getdate.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, getifaddrs.3, getipnodebyname.3, getmntent.3, getnameinfo.3, getnetent.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, glob.3, gnu_get_libc_version.3, hash.3, hsearch.3, if_nameindex.3, inet.3, inet_net_pton.3, inet_pton.3, insque.3, isalpha.3, makecontext.3, mallinfo.3, malloc_info.3, mallopt.3, matherr.3, mbstowcs.3, mcheck.3, memchr.3, mq_getattr.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, ntp_gettime.3, posix_openpt.3, printf.3, pthread_attr_init.3, pthread_attr_setschedparam.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_tryjoin_np.3, readdir.3, realpath.3, recno.3, regex.3, rpc.3, scanf.3, sched_getcpu.3, sem_wait.3, setaliasent.3, sigqueue.3, statvfs.3, strcat.3, strcpy.3, strftime.3, strtok.3, strtol.3, strverscmp.3, toupper.3, ttyslot.3, xdr.3, fuse.4, loop.4, rtc.4, st.4, acct.5, core.5, elf.5, slabinfo.5, aio.7, arp.7, capabilities.7, cgroup_namespaces.7, cgroups.7, ddp.7, fanotify.7, feature_test_macros.7, inode.7, inotify.7, ip.7, keyrings.7, locale.7, mount_namespaces.7, namespaces.7, netdevice.7, netlink.7, packet.7, pkeys.7, pthreads.7, sched.7, session-keyring.7, sock_diag.7, socket.7, spufs.7, udplite.7, unix.7, user_namespaces.7, vdso.7, x25.7, ld.so.8: Use consistent markup for code snippets
Change .nf/.fi to .EX/.EE
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-18 19:52:46 +00:00
|
|
|
.EX
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
struct tpacket_stats {
|
2014-01-04 21:44:33 +00:00
|
|
|
unsigned int tp_packets; /* Total packet count */
|
|
|
|
unsigned int tp_drops; /* Dropped packet count */
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
};
|
execve.2, ioctl_console.2, ioctl_iflags.2, ioctl_ns.2, ioctl_userfaultfd.2, kcmp.2, kexec_load.2, keyctl.2, link.2, listxattr.2, membarrier.2, memfd_create.2, mmap.2, modify_ldt.2, mprotect.2, msgctl.2, nanosleep.2, open_by_handle_at.2, perf_event_open.2, poll.2, posix_fadvise.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, readdir.2, readv.2, recv.2, recvmmsg.2, request_key.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setscheduler.2, seccomp.2, select.2, select_tut.2, semctl.2, semop.2, send.2, sendmmsg.2, set_thread_area.2, setns.2, shmctl.2, shmget.2, sigaction.2, sigaltstack.2, signal.2, sigwaitinfo.2, stat.2, statfs.2, statx.2, sync_file_range.2, syscall.2, sysctl.2, sysinfo.2, tee.2, timer_create.2, timer_settime.2, timerfd_create.2, unshare.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vmsplice.2, wait.2, adjtime.3, aio_init.3, backtrace.3, basename.3, bswap.3, btree.3, clock_getcpuclockid.3, cmsg.3, confstr.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlinfo.3, dlopen.3, duplocale.3, encrypt.3, end.3, endian.3, err.3, errno.3, ether_aton.3, fgetgrent.3, fgetpwent.3, fmemopen.3, frexp.3, ftime.3, fts.3, getaddrinfo.3, getaddrinfo_a.3, getdate.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, getifaddrs.3, getipnodebyname.3, getmntent.3, getnameinfo.3, getnetent.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, glob.3, gnu_get_libc_version.3, hash.3, hsearch.3, if_nameindex.3, inet.3, inet_net_pton.3, inet_pton.3, insque.3, isalpha.3, makecontext.3, mallinfo.3, malloc_info.3, mallopt.3, matherr.3, mbstowcs.3, mcheck.3, memchr.3, mq_getattr.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, ntp_gettime.3, posix_openpt.3, printf.3, pthread_attr_init.3, pthread_attr_setschedparam.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_tryjoin_np.3, readdir.3, realpath.3, recno.3, regex.3, rpc.3, scanf.3, sched_getcpu.3, sem_wait.3, setaliasent.3, sigqueue.3, statvfs.3, strcat.3, strcpy.3, strftime.3, strtok.3, strtol.3, strverscmp.3, toupper.3, ttyslot.3, xdr.3, fuse.4, loop.4, rtc.4, st.4, acct.5, core.5, elf.5, slabinfo.5, aio.7, arp.7, capabilities.7, cgroup_namespaces.7, cgroups.7, ddp.7, fanotify.7, feature_test_macros.7, inode.7, inotify.7, ip.7, keyrings.7, locale.7, mount_namespaces.7, namespaces.7, netdevice.7, netlink.7, packet.7, pkeys.7, pthreads.7, sched.7, session-keyring.7, sock_diag.7, socket.7, spufs.7, udplite.7, unix.7, user_namespaces.7, vdso.7, x25.7, ld.so.8: Use consistent markup for code snippets
Change .nf/.fi to .EX/.EE
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-18 19:52:46 +00:00
|
|
|
.EE
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
.in
|
environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
|
|
|
.IP
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
Receiving statistics resets the internal counters.
|
|
|
|
The statistics structure differs when using a ring of variant
|
|
|
|
.BR TPACKET_V3 .
|
|
|
|
.TP
|
2014-01-04 21:51:42 +00:00
|
|
|
.BR PACKET_TIMESTAMP " (with " PACKET_RX_RING "; since Linux 2.6.36)"
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
.\" commit 614f60fa9d73a9e8fdff3df83381907fea7c5649
|
|
|
|
The packet receive ring always stores a timestamp in the metadata header.
|
|
|
|
By default, this is a software generated timestamp generated when the
|
|
|
|
packet is copied into the ring.
|
|
|
|
This integer option selects the type of timestamp.
|
|
|
|
Besides the default, it support the two hardware formats described in
|
|
|
|
.IR Documentation/networking/timestamping.txt
|
|
|
|
in the Linux kernel source tree.
|
|
|
|
.TP
|
|
|
|
.BR PACKET_TX_RING " (since Linux 2.6.31)"
|
|
|
|
.\" commit 69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1
|
2014-01-04 22:00:31 +00:00
|
|
|
Create a memory-mapped ring buffer for packet transmission.
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
This option is similar to
|
|
|
|
.BR PACKET_RX_RING
|
|
|
|
and takes the same arguments.
|
2014-04-29 11:57:47 +00:00
|
|
|
The application writes packets into slots with
|
|
|
|
.I tp_status
|
|
|
|
equal to
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
.BR TP_STATUS_AVAILABLE
|
2014-04-29 11:57:47 +00:00
|
|
|
and schedules them for transmission by changing
|
|
|
|
.I tp_status
|
|
|
|
to
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
.BR TP_STATUS_SEND_REQUEST .
|
|
|
|
When packets are ready to be transmitted, the application calls
|
|
|
|
.BR send (2)
|
|
|
|
or a variant thereof.
|
|
|
|
The
|
|
|
|
.I buf
|
|
|
|
and
|
|
|
|
.I len
|
|
|
|
fields of this call are ignored.
|
|
|
|
If an address is passed using
|
|
|
|
.BR sendto (2)
|
|
|
|
or
|
2014-01-30 16:08:02 +00:00
|
|
|
.BR sendmsg (2),
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
then that overrides the socket default.
|
2014-04-29 11:57:47 +00:00
|
|
|
On successful transmission, the socket resets
|
|
|
|
.I tp_status
|
|
|
|
to
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
.BR TP_STATUS_AVAILABLE .
|
2014-04-22 16:01:59 +00:00
|
|
|
It immediately aborts the transmission on error unless
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
.BR PACKET_LOSS
|
|
|
|
is set.
|
|
|
|
.TP
|
2014-01-04 21:51:42 +00:00
|
|
|
.BR PACKET_VERSION " (with " PACKET_RX_RING "; since Linux 2.6.27)"
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
|
|
|
.\" commit bbd6ef87c544d88c30e4b762b1b61ef267a7d279
|
|
|
|
By default,
|
|
|
|
.BR PACKET_RX_RING
|
|
|
|
creates a packet receive ring of variant
|
|
|
|
.BR TPACKET_V1 .
|
|
|
|
To create another variant, configure the desired variant by setting this
|
|
|
|
integer option before creating the ring.
|
2013-12-10 15:31:25 +00:00
|
|
|
.TP
|
|
|
|
.BR PACKET_QDISC_BYPASS " (since Linux 3.14)"
|
2014-01-28 14:21:24 +00:00
|
|
|
.\" commit d346a3fae3ff1d99f5d0c819bf86edf9094a26a1
|
2013-12-10 15:31:25 +00:00
|
|
|
By default, packets sent through packet sockets pass through the kernel's
|
2014-02-14 10:34:26 +00:00
|
|
|
qdisc (traffic control) layer, which is fine for the vast majority of use
|
|
|
|
cases.
|
2014-02-23 07:34:33 +00:00
|
|
|
For traffic generator appliances using packet sockets
|
|
|
|
that intend to brute-force flood the network\(emfor example,
|
|
|
|
to test devices under load in a similar
|
|
|
|
fashion to pktgen\(emthis layer can be bypassed by setting
|
|
|
|
this integer option to 1.
|
2014-03-03 04:48:49 +00:00
|
|
|
A side effect is that packet buffering in the qdisc layer is avoided,
|
2014-02-23 07:34:33 +00:00
|
|
|
which will lead to increased drops when network
|
|
|
|
device transmit queues are busy;
|
2014-02-14 10:34:26 +00:00
|
|
|
therefore, use at your own risk.
|
2008-08-08 16:41:48 +00:00
|
|
|
.SS Ioctls
|
|
|
|
.B SIOCGSTAMP
|
|
|
|
can be used to receive the timestamp of the last received packet.
|
|
|
|
Argument is a
|
packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
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.I struct timeval
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variable.
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2010-09-10 03:56:35 +00:00
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.\" FIXME Document SIOCGSTAMPNS
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environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
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.PP
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2014-01-10 17:21:00 +00:00
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In addition, all standard ioctls defined in
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2008-08-08 16:41:48 +00:00
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.BR netdevice (7)
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and
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.BR socket (7)
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are valid on packet sockets.
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intro.1, time.1, _syscall.2, accept.2, brk.2, capget.2, faccessat.2, futimesat.2, gethostname.2, intro.2, ioprio_set.2, kill.2, madvise.2, mlock.2, mount.2, msgget.2, perf_event_open.2, poll.2, readv.2, sched_rr_get_interval.2, sched_setscheduler.2, select.2, select_tut.2, shmget.2, stat.2, timer_create.2, ustat.2, vfork.2, wait.2, alloca.3, atexit.3, catopen.3, crypt.3, dbopen.3, fenv.3, fopen.3, getaddrinfo_a.3, gethostbyname.3, getutent.3, intro.3, login.3, mallopt.3, queue.3, regex.3, sigpause.3, sigsetops.3, stdio.3, strftime.3, strptime.3, sysconf.3, ttyslot.3, undocumented.3, cciss.4, console_codes.4, hpsa.4, initrd.4, intro.4, rtc.4, st.4, tty_ioctl.4, wavelan.4, acct.5, charmap.5, dir_colors.5, hosts.5, intro.5, termcap.5, utmp.5, intro.6, armscii-8.7, boot.7, bootparam.7, capabilities.7, cpuset.7, credentials.7, ddp.7, epoll.7, glob.7, intro.7, ip.7, ipv6.7, iso_8859-1.7, iso_8859-10.7, iso_8859-11.7, iso_8859-13.7, iso_8859-14.7, iso_8859-15.7, iso_8859-16.7, iso_8859-2.7, iso_8859-3.7, iso_8859-4.7, iso_8859-5.7, iso_8859-6.7, iso_8859-7.7, iso_8859-8.7, iso_8859-9.7, koi8-r.7, koi8-u.7, man-pages.7, man.7, math_error.7, netlink.7, numa.7, packet.7, path_resolution.7, pipe.7, pthreads.7, raw.7, rtnetlink.7, signal.7, socket.7, spufs.7, svipc.7, tcp.7, time.7, udp.7, udplite.7, unicode.7, unix.7, uri.7, utf-8.7, x25.7, intro.8: Global fix: use consistent capitalization in .SS headings
Capitalization in .SS sections across pages (and sometimes even
within a single page) is wildly inconsistent. Make it consistent.
Capitalize first word in heading, but otherwise use lower case,
except where English usage (e.g., proper nouns) or programming
language requirements (e.g., identifier names) dictate otherwise.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-02-24 14:08:38 +00:00
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.SS Error handling
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2008-08-08 16:41:48 +00:00
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Packet sockets do no error handling other than errors occurred
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while passing the packet to the device driver.
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They don't have the concept of a pending error.
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.SH ERRORS
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.TP
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.B EADDRNOTAVAIL
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Unknown multicast group address passed.
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.TP
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.B EFAULT
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User passed invalid memory address.
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.TP
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.B EINVAL
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Invalid argument.
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.TP
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.B EMSGSIZE
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Packet is bigger than interface MTU.
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.TP
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.B ENETDOWN
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Interface is not up.
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.TP
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.B ENOBUFS
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Not enough memory to allocate the packet.
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.TP
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.B ENODEV
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Unknown device name or interface index specified in interface address.
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.TP
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.B ENOENT
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No packet received.
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.TP
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.B ENOTCONN
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No interface address passed.
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.TP
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.B ENXIO
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Interface address contained an invalid interface index.
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.TP
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.B EPERM
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User has insufficient privileges to carry out this operation.
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2015-03-27 11:24:57 +00:00
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.PP
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2014-01-10 17:21:00 +00:00
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In addition, other errors may be generated by the low-level driver.
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2008-08-08 16:41:48 +00:00
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.SH VERSIONS
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2008-08-08 16:47:53 +00:00
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.B AF_PACKET
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2008-08-08 16:41:48 +00:00
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is a new feature in Linux 2.2.
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Earlier Linux versions supported only
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.BR SOCK_PACKET .
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.PP
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.SH NOTES
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For portable programs it is suggested to use
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2008-08-08 16:47:53 +00:00
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.B AF_PACKET
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2008-08-08 16:41:48 +00:00
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via
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.BR pcap (3);
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intro.1, _syscall.2, access.2, arch_prctl.2, cacheflush.2, chown.2, clock_getres.2, clone.2, create_module.2, fcntl.2, flock.2, get_kernel_syms.2, get_robust_list.2, get_thread_area.2, getcpu.2, getpriority.2, getrlimit.2, getrusage.2, ioprio_set.2, kexec_load.2, madvise.2, mbind.2, migrate_pages.2, mknod.2, mmap.2, mount.2, move_pages.2, mprotect.2, open.2, pause.2, pciconfig_read.2, perf_event_open.2, prctl.2, ptrace.2, query_module.2, read.2, reboot.2, recv.2, s390_runtime_instr.2, sched_setscheduler.2, select_tut.2, send.2, set_mempolicy.2, setfsgid.2, setfsuid.2, sigaction.2, spu_create.2, spu_run.2, stime.2, swapon.2, syslog.2, timer_create.2, timer_getoverrun.2, times.2, tkill.2, umount.2, unimplemented.2, ustat.2, vm86.2, wait.2, abs.3, aio_read.3, aio_write.3, bsd_signal.3, catgets.3, clearenv.3, cmsg.3, dbopen.3, dirfd.3, dlopen.3, exec.3, fenv.3, ferror.3, fmemopen.3, fnmatch.3, fopen.3, futimes.3, getaddrinfo.3, getifaddrs.3, getipnodebyname.3, hsearch.3, if_nameindex.3, inet_pton.3, mblen.3, mbrlen.3, mbsrtowcs.3, mbtowc.3, mcheck.3, memfrob.3, mq_notify.3, netlink.3, posix_memalign.3, printf.3, pthread_attr_setscope.3, pthread_cleanup_push.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setcancelstate.3, pthread_setconcurrency.3, raise.3, resolver.3, rpc.3, rtime.3, rtnetlink.3, scanf.3, setbuf.3, setnetgrent.3, shm_open.3, sigpause.3, sigset.3, sigwait.3, sockatmark.3, strcasecmp.3, strcmp.3, strdup.3, strftime.3, strptime.3, strsignal.3, strverscmp.3, sysv_signal.3, termios.3, wcrtomb.3, wcsnlen.3, wcsnrtombs.3, wcsrtombs.3, wctomb.3, wprintf.3, console_codes.4, cpuid.4, msr.4, rtc.4, sk98lin.4, st.4, tty.4, charmap.5, core.5, elf.5, hosts.equiv.5, proc.5, resolv.conf.5, services.5, slabinfo.5, arp.7, bootparam.7, capabilities.7, charsets.7, cpuset.7, ddp.7, epoll.7, feature_test_macros.7, futex.7, hier.7, icmp.7, inotify.7, ip.7, ipv6.7, man-pages.7, mdoc.7, mdoc.samples.7, netdevice.7, netlink.7, numa.7, packet.7, path_resolution.7, posixoptions.7, pthreads.7, raw.7, rtld-audit.7, rtnetlink.7, sem_overview.7, sigevent.7, socket.7, spufs.7, tcp.7, udp.7, unicode.7, uri.7, utf-8.7, intro.8, ldconfig.8, sync.8: Global fix: fix placement of word "only"
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-31 08:53:00 +00:00
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although this covers only a subset of the
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2008-08-08 16:47:53 +00:00
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.B AF_PACKET
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2008-08-08 16:41:48 +00:00
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features.
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environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
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.PP
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2008-08-08 16:41:48 +00:00
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The
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.B SOCK_DGRAM
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packet sockets make no attempt to create or parse the IEEE 802.2 LLC
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header for a IEEE 802.3 frame.
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When
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.B ETH_P_802_3
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is specified as protocol for sending the kernel creates the
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802.3 frame and fills out the length field; the user has to supply the LLC
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header to get a fully conforming packet.
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Incoming 802.3 packets are not multiplexed on the DSAP/SSAP protocol
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fields; instead they are supplied to the user as protocol
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.B ETH_P_802_2
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packet.7: Document fanout, ring, and auxiliary options
The packet socket manual page does not list all socket options.
This patch adds descriptions of the common packet socket options
PACKET_AUXDATA, PACKET_FANOUT, PACKET_RX_RING, PACKET_STATISTICS,
PACKET_TX_RING
and the ring-specific options
PACKET_LOSS, PACKET_RESERVE, PACKET_TIMESTAMP, PACKET_VERSION
It does not yet add descriptions for
PACKET_COPY_THRESH, PACKET_HDRLEN, PACKET_ORIGDEV,
PACKET_TX_HAS_OFF, PACKET_TX_TIMESTAMP, PACKET_VNET_HDR
It tries to balance being informative with exposing kernel detail
that is unlikely to be used by most readers or that may change
frequently. For implementation details, the manpage points to the
documentation in kernel Documentation/networking. Let me know if
options should be added or removed.
Source: PACKET_FANOUT, PACKET_RX_RING and PACKET_VERSION are in
/tools/testing/net/psock_fanout.c in the latest Linux kernel source
tree. PACKET_STATISTICS was in the first version of that test.
PACKET_TX_RING I have used elsewhere. The other options are based
on reading kernel code.
[Very minor fixups. -dborkman]
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-12-06 17:18:49 +00:00
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with the LLC header prefixed.
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2008-08-08 16:41:48 +00:00
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It is thus not possible to bind to
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.BR ETH_P_802_3 ;
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bind to
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.B ETH_P_802_2
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instead and do the protocol multiplex yourself.
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The default for sending is the standard Ethernet DIX
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encapsulation with the protocol filled in.
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environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
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.PP
|
2008-08-08 16:41:48 +00:00
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Packet sockets are not subject to the input or output firewall chains.
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.SS Compatibility
|
2015-03-27 11:24:57 +00:00
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In Linux 2.0, the only way to get a packet socket was with the call:
|
environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
|
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.PP
|
2015-03-27 11:24:57 +00:00
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socket(AF_INET, SOCK_PACKET, protocol)
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environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
|
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.PP
|
2015-03-27 11:24:57 +00:00
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This is still supported, but deprecated and strongly discouraged.
|
2008-08-08 16:41:48 +00:00
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The main difference between the two methods is that
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.B SOCK_PACKET
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uses the old
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.I struct sockaddr_pkt
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2015-03-27 11:24:57 +00:00
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to specify an interface, which doesn't provide physical-layer
|
2008-08-08 16:41:48 +00:00
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independence.
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environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
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.PP
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2008-08-08 16:41:48 +00:00
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.in +4n
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execve.2, ioctl_console.2, ioctl_iflags.2, ioctl_ns.2, ioctl_userfaultfd.2, kcmp.2, kexec_load.2, keyctl.2, link.2, listxattr.2, membarrier.2, memfd_create.2, mmap.2, modify_ldt.2, mprotect.2, msgctl.2, nanosleep.2, open_by_handle_at.2, perf_event_open.2, poll.2, posix_fadvise.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, readdir.2, readv.2, recv.2, recvmmsg.2, request_key.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setscheduler.2, seccomp.2, select.2, select_tut.2, semctl.2, semop.2, send.2, sendmmsg.2, set_thread_area.2, setns.2, shmctl.2, shmget.2, sigaction.2, sigaltstack.2, signal.2, sigwaitinfo.2, stat.2, statfs.2, statx.2, sync_file_range.2, syscall.2, sysctl.2, sysinfo.2, tee.2, timer_create.2, timer_settime.2, timerfd_create.2, unshare.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vmsplice.2, wait.2, adjtime.3, aio_init.3, backtrace.3, basename.3, bswap.3, btree.3, clock_getcpuclockid.3, cmsg.3, confstr.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlinfo.3, dlopen.3, duplocale.3, encrypt.3, end.3, endian.3, err.3, errno.3, ether_aton.3, fgetgrent.3, fgetpwent.3, fmemopen.3, frexp.3, ftime.3, fts.3, getaddrinfo.3, getaddrinfo_a.3, getdate.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, getifaddrs.3, getipnodebyname.3, getmntent.3, getnameinfo.3, getnetent.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, glob.3, gnu_get_libc_version.3, hash.3, hsearch.3, if_nameindex.3, inet.3, inet_net_pton.3, inet_pton.3, insque.3, isalpha.3, makecontext.3, mallinfo.3, malloc_info.3, mallopt.3, matherr.3, mbstowcs.3, mcheck.3, memchr.3, mq_getattr.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, ntp_gettime.3, posix_openpt.3, printf.3, pthread_attr_init.3, pthread_attr_setschedparam.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_tryjoin_np.3, readdir.3, realpath.3, recno.3, regex.3, rpc.3, scanf.3, sched_getcpu.3, sem_wait.3, setaliasent.3, sigqueue.3, statvfs.3, strcat.3, strcpy.3, strftime.3, strtok.3, strtol.3, strverscmp.3, toupper.3, ttyslot.3, xdr.3, fuse.4, loop.4, rtc.4, st.4, acct.5, core.5, elf.5, slabinfo.5, aio.7, arp.7, capabilities.7, cgroup_namespaces.7, cgroups.7, ddp.7, fanotify.7, feature_test_macros.7, inode.7, inotify.7, ip.7, keyrings.7, locale.7, mount_namespaces.7, namespaces.7, netdevice.7, netlink.7, packet.7, pkeys.7, pthreads.7, sched.7, session-keyring.7, sock_diag.7, socket.7, spufs.7, udplite.7, unix.7, user_namespaces.7, vdso.7, x25.7, ld.so.8: Use consistent markup for code snippets
Change .nf/.fi to .EX/.EE
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-18 19:52:46 +00:00
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.EX
|
2008-08-08 16:41:48 +00:00
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struct sockaddr_pkt {
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unsigned short spkt_family;
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unsigned char spkt_device[14];
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unsigned short spkt_protocol;
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};
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execve.2, ioctl_console.2, ioctl_iflags.2, ioctl_ns.2, ioctl_userfaultfd.2, kcmp.2, kexec_load.2, keyctl.2, link.2, listxattr.2, membarrier.2, memfd_create.2, mmap.2, modify_ldt.2, mprotect.2, msgctl.2, nanosleep.2, open_by_handle_at.2, perf_event_open.2, poll.2, posix_fadvise.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, readdir.2, readv.2, recv.2, recvmmsg.2, request_key.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setattr.2, sched_setscheduler.2, seccomp.2, select.2, select_tut.2, semctl.2, semop.2, send.2, sendmmsg.2, set_thread_area.2, setns.2, shmctl.2, shmget.2, sigaction.2, sigaltstack.2, signal.2, sigwaitinfo.2, stat.2, statfs.2, statx.2, sync_file_range.2, syscall.2, sysctl.2, sysinfo.2, tee.2, timer_create.2, timer_settime.2, timerfd_create.2, unshare.2, userfaultfd.2, ustat.2, utime.2, utimensat.2, vmsplice.2, wait.2, adjtime.3, aio_init.3, backtrace.3, basename.3, bswap.3, btree.3, clock_getcpuclockid.3, cmsg.3, confstr.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlinfo.3, dlopen.3, duplocale.3, encrypt.3, end.3, endian.3, err.3, errno.3, ether_aton.3, fgetgrent.3, fgetpwent.3, fmemopen.3, frexp.3, ftime.3, fts.3, getaddrinfo.3, getaddrinfo_a.3, getdate.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, getifaddrs.3, getipnodebyname.3, getmntent.3, getnameinfo.3, getnetent.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, glob.3, gnu_get_libc_version.3, hash.3, hsearch.3, if_nameindex.3, inet.3, inet_net_pton.3, inet_pton.3, insque.3, isalpha.3, makecontext.3, mallinfo.3, malloc_info.3, mallopt.3, matherr.3, mbstowcs.3, mcheck.3, memchr.3, mq_getattr.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, ntp_gettime.3, posix_openpt.3, printf.3, pthread_attr_init.3, pthread_attr_setschedparam.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_tryjoin_np.3, readdir.3, realpath.3, recno.3, regex.3, rpc.3, scanf.3, sched_getcpu.3, sem_wait.3, setaliasent.3, sigqueue.3, statvfs.3, strcat.3, strcpy.3, strftime.3, strtok.3, strtol.3, strverscmp.3, toupper.3, ttyslot.3, xdr.3, fuse.4, loop.4, rtc.4, st.4, acct.5, core.5, elf.5, slabinfo.5, aio.7, arp.7, capabilities.7, cgroup_namespaces.7, cgroups.7, ddp.7, fanotify.7, feature_test_macros.7, inode.7, inotify.7, ip.7, keyrings.7, locale.7, mount_namespaces.7, namespaces.7, netdevice.7, netlink.7, packet.7, pkeys.7, pthreads.7, sched.7, session-keyring.7, sock_diag.7, socket.7, spufs.7, udplite.7, unix.7, user_namespaces.7, vdso.7, x25.7, ld.so.8: Use consistent markup for code snippets
Change .nf/.fi to .EX/.EE
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-18 19:52:46 +00:00
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.EE
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2008-08-08 16:41:48 +00:00
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.in
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environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
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.PP
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2008-08-08 16:41:48 +00:00
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.I spkt_family
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contains
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the device type,
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.I spkt_protocol
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is the IEEE 802.3 protocol type as defined in
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.I <sys/if_ether.h>
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and
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.I spkt_device
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2008-09-26 05:13:25 +00:00
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is the device name as a null-terminated string, for example, eth0.
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environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
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.PP
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2008-08-08 16:41:48 +00:00
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This structure is obsolete and should not be used in new code.
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.SH BUGS
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The IEEE 802.2/803.3 LLC handling could be considered as a bug.
|
environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
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.PP
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2008-08-08 16:41:48 +00:00
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Socket filters are not documented.
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environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
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.PP
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2008-08-08 16:41:48 +00:00
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The
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.B MSG_TRUNC
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.BR recvmsg (2)
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extension is an ugly hack and should be replaced by a control message.
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There is currently no way to get the original destination address of
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packets via
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.BR SOCK_DGRAM .
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.\" .SH CREDITS
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.\" This man page was written by Andi Kleen with help from Matthew Wilcox.
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2008-08-08 16:47:53 +00:00
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.\" AF_PACKET in Linux 2.2 was implemented
|
2008-08-08 16:41:48 +00:00
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.\" by Alexey Kuznetsov, based on code by Alan Cox and others.
|
getent.1, intro.1, time.1, _exit.2, _syscall.2, accept.2, access.2, acct.2, adjtimex.2, alarm.2, alloc_hugepages.2, arch_prctl.2, bdflush.2, bind.2, brk.2, cacheflush.2, capget.2, chdir.2, chmod.2, chown.2, chroot.2, clock_getres.2, clock_nanosleep.2, clone.2, close.2, connect.2, create_module.2, delete_module.2, dup.2, epoll_create.2, epoll_ctl.2, epoll_wait.2, eventfd.2, execve.2, exit_group.2, faccessat.2, fchmodat.2, fchownat.2, fcntl.2, flock.2, fork.2, fstatat.2, fsync.2, futex.2, futimesat.2, get_kernel_syms.2, get_robust_list.2, get_thread_area.2, getcpu.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getitimer.2, getpagesize.2, getpeername.2, getpid.2, getpriority.2, getresuid.2, getrlimit.2, getrusage.2, getsid.2, getsockname.2, getsockopt.2, gettid.2, gettimeofday.2, getuid.2, getunwind.2, getxattr.2, idle.2, init_module.2, inotify_add_watch.2, inotify_init.2, inotify_rm_watch.2, intro.2, io_cancel.2, io_destroy.2, io_getevents.2, io_setup.2, io_submit.2, ioctl.2, ioctl_list.2, ioperm.2, iopl.2, ioprio_set.2, ipc.2, kcmp.2, kill.2, killpg.2, link.2, linkat.2, listen.2, listxattr.2, llseek.2, lookup_dcookie.2, lseek.2, madvise.2, migrate_pages.2, mincore.2, mkdir.2, mkdirat.2, mknod.2, mknodat.2, mlock.2, mmap.2, mmap2.2, modify_ldt.2, mount.2, move_pages.2, mprotect.2, mq_getsetattr.2, mremap.2, msgctl.2, msgget.2, msgop.2, msync.2, nanosleep.2, nfsservctl.2, nice.2, open.2, openat.2, outb.2, pause.2, pciconfig_read.2, perf_event_open.2, perfmonctl.2, personality.2, pipe.2, pivot_root.2, poll.2, posix_fadvise.2, prctl.2, pread.2, process_vm_readv.2, ptrace.2, query_module.2, quotactl.2, read.2, readahead.2, readdir.2, readlink.2, readlinkat.2, readv.2, reboot.2, recv.2, remap_file_pages.2, removexattr.2, rename.2, renameat.2, rmdir.2, rt_sigqueueinfo.2, sched_get_priority_max.2, sched_rr_get_interval.2, sched_setaffinity.2, sched_setparam.2, sched_setscheduler.2, sched_yield.2, select.2, semctl.2, semget.2, semop.2, send.2, sendfile.2, set_thread_area.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setpgid.2, setresuid.2, setreuid.2, setsid.2, setuid.2, setup.2, setxattr.2, shmctl.2, shmget.2, shmop.2, shutdown.2, sigaction.2, sigaltstack.2, signal.2, signalfd.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, socket.2, socketcall.2, socketpair.2, splice.2, stat.2, statfs.2, stime.2, swapon.2, symlink.2, symlinkat.2, sync.2, sync_file_range.2, sysctl.2, sysfs.2, sysinfo.2, syslog.2, tee.2, time.2, timerfd_create.2, times.2, tkill.2, truncate.2, umask.2, umount.2, uname.2, unimplemented.2, unlink.2, unlinkat.2, uselib.2, ustat.2, utime.2, utimensat.2, vfork.2, vhangup.2, vm86.2, vmsplice.2, wait.2, wait4.2, write.2, CPU_SET.3, INFINITY.3, MB_CUR_MAX.3, MB_LEN_MAX.3, __setfpucw.3, a64l.3, abort.3, abs.3, acos.3, acosh.3, addseverity.3, adjtime.3, aio_cancel.3, aio_error.3, aio_fsync.3, aio_read.3, aio_return.3, aio_suspend.3, aio_write.3, alloca.3, argz_add.3, asin.3, asinh.3, asprintf.3, assert.3, assert_perror.3, atan.3, atan2.3, atanh.3, atexit.3, atof.3, atoi.3, backtrace.3, basename.3, bcmp.3, bcopy.3, bindresvport.3, bsd_signal.3, bsearch.3, bstring.3, btowc.3, btree.3, byteorder.3, bzero.3, cabs.3, cacos.3, cacosh.3, canonicalize_file_name.3, carg.3, casin.3, casinh.3, catan.3, catanh.3, catgets.3, catopen.3, cbrt.3, ccos.3, ccosh.3, ceil.3, cerf.3, cexp.3, cexp2.3, cfree.3, cimag.3, clearenv.3, clock.3, clock_getcpuclockid.3, clog.3, clog10.3, clog2.3, closedir.3, cmsg.3, confstr.3, conj.3, copysign.3, cos.3, cosh.3, cpow.3, cproj.3, creal.3, crypt.3, csin.3, csinh.3, csqrt.3, ctan.3, ctanh.3, ctermid.3, ctime.3, daemon.3, dbopen.3, des_crypt.3, difftime.3, dirfd.3, div.3, dl_iterate_phdr.3, dlopen.3, dprintf.3, drand48.3, drand48_r.3, dysize.3, ecvt.3, ecvt_r.3, encrypt.3, end.3, endian.3, envz_add.3, erf.3, erfc.3, err.3, errno.3, error.3, ether_aton.3, euidaccess.3, exec.3, exit.3, exp.3, exp10.3, exp2.3, expm1.3, fabs.3, fclose.3, fcloseall.3, fdim.3, fenv.3, ferror.3, fexecve.3, fflush.3, ffs.3, fgetgrent.3, fgetpwent.3, fgetwc.3, fgetws.3, finite.3, flockfile.3, floor.3, fma.3, fmax.3, fmemopen.3, fmin.3, fmod.3, fmtmsg.3, fnmatch.3, fopen.3, fpathconf.3, fpclassify.3, fpurge.3, fputwc.3, fputws.3, fread.3, frexp.3, fseek.3, fseeko.3, ftime.3, ftok.3, fts.3, ftw.3, futimes.3, fwide.3, gamma.3, gcvt.3, getaddrinfo.3, getaddrinfo_a.3, getauxval.3, getcontext.3, getcwd.3, getdate.3, getdirentries.3, getdtablesize.3, getenv.3, getfsent.3, getgrent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getipnodebyname.3, getline.3, getloadavg.3, getlogin.3, getmntent.3, getnameinfo.3, getnetent.3, getnetent_r.3, getopt.3, getpass.3, getprotoent.3, getprotoent_r.3, getpt.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getrpcent_r.3, getrpcport.3, gets.3, getservent.3, getservent_r.3, getspnam.3, getttyent.3, getumask.3, getusershell.3, getutent.3, getw.3, getwchar.3, glob.3, grantpt.3, gsignal.3, hash.3, hsearch.3, hypot.3, iconv.3, iconv_close.3, iconv_open.3, ilogb.3, index.3, inet.3, inet_ntop.3, inet_pton.3, infnan.3, initgroups.3, insque.3, intro.3, isalpha.3, isatty.3, isgreater.3, iswalnum.3, iswalpha.3, iswblank.3, iswcntrl.3, iswctype.3, iswdigit.3, iswgraph.3, iswlower.3, iswprint.3, iswpunct.3, iswspace.3, iswupper.3, iswxdigit.3, j0.3, key_setsecret.3, ldexp.3, lgamma.3, lio_listio.3, localeconv.3, lockf.3, log.3, log10.3, log1p.3, log2.3, logb.3, login.3, longjmp.3, lrint.3, lround.3, lsearch.3, lseek64.3, makecontext.3, makedev.3, malloc.3, malloc_hook.3, mblen.3, mbrlen.3, mbrtowc.3, mbsinit.3, mbsnrtowcs.3, mbsrtowcs.3, mbstowcs.3, mbtowc.3, memccpy.3, memchr.3, memcmp.3, memcpy.3, memfrob.3, memmem.3, memmove.3, mempcpy.3, memset.3, mkdtemp.3, mkfifo.3, mkfifoat.3, mkstemp.3, mktemp.3, modf.3, mpool.3, mq_close.3, mq_getattr.3, mq_notify.3, mq_open.3, mq_receive.3, mq_send.3, mq_unlink.3, mtrace.3, nan.3, netlink.3, nextafter.3, nl_langinfo.3, offsetof.3, on_exit.3, opendir.3, openpty.3, perror.3, popen.3, posix_fallocate.3, posix_memalign.3, posix_openpt.3, pow.3, pow10.3, printf.3, profil.3, program_invocation_name.3, psignal.3, pthread_kill_other_threads_np.3, ptsname.3, putenv.3, putgrent.3, putpwent.3, puts.3, putwchar.3, qecvt.3, qsort.3, queue.3, raise.3, rand.3, random.3, random_r.3, rcmd.3, re_comp.3, readdir.3, realpath.3, recno.3, regex.3, remainder.3, remove.3, remquo.3, resolver.3, rewinddir.3, rexec.3, rint.3, round.3, rpc.3, rpmatch.3, rtime.3, rtnetlink.3, scalb.3, scalbln.3, scandir.3, scandirat.3, scanf.3, seekdir.3, sem_close.3, sem_destroy.3, sem_getvalue.3, sem_init.3, sem_open.3, sem_post.3, sem_unlink.3, sem_wait.3, setaliasent.3, setbuf.3, setenv.3, setjmp.3, setlocale.3, setlogmask.3, setnetgrent.3, shm_open.3, siginterrupt.3, signbit.3, significand.3, sigpause.3, sigqueue.3, sigset.3, sigsetops.3, sigvec.3, sin.3, sincos.3, sinh.3, sleep.3, sockatmark.3, sqrt.3, statvfs.3, stdarg.3, stdin.3, stdio.3, stdio_ext.3, stpcpy.3, stpncpy.3, strcasecmp.3, strcat.3, strchr.3, strcmp.3, strcoll.3, strcpy.3, strdup.3, strerror.3, strfmon.3, strfry.3, strftime.3, string.3, strlen.3, strnlen.3, strpbrk.3, strptime.3, strsep.3, strsignal.3, strspn.3, strstr.3, strtod.3, strtoimax.3, strtok.3, strtol.3, strtoul.3, strverscmp.3, strxfrm.3, swab.3, sysconf.3, syslog.3, system.3, sysv_signal.3, tan.3, tanh.3, tcgetpgrp.3, tcgetsid.3, telldir.3, tempnam.3, termios.3, tgamma.3, timegm.3, timeradd.3, tmpfile.3, tmpnam.3, toascii.3, toupper.3, towctrans.3, towlower.3, towupper.3, trunc.3, tsearch.3, ttyname.3, ttyslot.3, tzset.3, ualarm.3, ulimit.3, ungetwc.3, unlocked_stdio.3, unlockpt.3, updwtmp.3, usleep.3, wcpcpy.3, wcpncpy.3, wcrtomb.3, wcscasecmp.3, wcscat.3, wcschr.3, wcscmp.3, wcscpy.3, wcscspn.3, wcsdup.3, wcslen.3, wcsncasecmp.3, wcsncat.3, wcsncmp.3, wcsncpy.3, wcsnlen.3, wcsnrtombs.3, wcspbrk.3, wcsrchr.3, wcsrtombs.3, wcsspn.3, wcsstr.3, wcstoimax.3, wcstok.3, wcstombs.3, wcswidth.3, wctob.3, wctomb.3, wctrans.3, wctype.3, wcwidth.3, wmemchr.3, wmemcmp.3, wmemcpy.3, wmemmove.3, wmemset.3, wordexp.3, wprintf.3, xcrypt.3, xdr.3, y0.3, cciss.4, console.4, console_codes.4, console_ioctl.4, dsp56k.4, fd.4, full.4, hd.4, hpsa.4, initrd.4, intro.4, lp.4, mem.4, mouse.4, null.4, pts.4, ram.4, random.4, rtc.4, sk98lin.4, st.4, tty.4, ttyS.4, tty_ioctl.4, vcs.4, wavelan.4, acct.5, charmap.5, dir_colors.5, filesystems.5, ftpusers.5, group.5, host.conf.5, hosts.5, hosts.equiv.5, intro.5, issue.5, locale.5, motd.5, networks.5, nologin.5, nscd.conf.5, passwd.5, proc.5, protocols.5, resolv.conf.5, rpc.5, securetty.5, services.5, shells.5, termcap.5, ttytype.5, utmp.5, armscii-8.7, arp.7, ascii.7, bootparam.7, capabilities.7, charsets.7, complex.7, cp1251.7, credentials.7, ddp.7, environ.7, epoll.7, fifo.7, futex.7, glob.7, hier.7, icmp.7, inotify.7, intro.7, ip.7, ipv6.7, iso_8859-1.7, iso_8859-10.7, iso_8859-11.7, iso_8859-13.7, iso_8859-14.7, iso_8859-15.7, iso_8859-16.7, iso_8859-2.7, iso_8859-3.7, iso_8859-4.7, iso_8859-5.7, iso_8859-6.7, iso_8859-7.7, iso_8859-8.7, iso_8859-9.7, koi8-r.7, koi8-u.7, locale.7, mailaddr.7, man.7, mq_overview.7, netdevice.7, netlink.7, numa.7, packet.7, path_resolution.7, pipe.7, posixoptions.7, pthreads.7, pty.7, raw.7, regex.7, rtld-audit.7, rtnetlink.7, sem_overview.7, shm_overview.7, sigevent.7, signal.7, socket.7, standards.7, suffixes.7, svipc.7, tcp.7, termio.7, time.7, udp.7, udplite.7, unicode.7, unix.7, uri.7, utf-8.7, x25.7, nscd.8, sync.8, tzselect.8, zdump.8, zic.8: Global fix: remove unneeded double quotes in .SH headings
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-02-24 18:01:36 +00:00
|
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|
.SH SEE ALSO
|
2008-08-08 16:41:48 +00:00
|
|
|
.BR socket (2),
|
|
|
|
.BR pcap (3),
|
|
|
|
.BR capabilities (7),
|
|
|
|
.BR ip (7),
|
|
|
|
.BR raw (7),
|
|
|
|
.BR socket (7)
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environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
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.PP
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2008-08-08 16:41:48 +00:00
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RFC\ 894 for the standard IP Ethernet encapsulation.
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RFC\ 1700 for the IEEE 802.3 IP encapsulation.
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environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
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.PP
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2008-08-08 16:41:48 +00:00
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The
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.I <linux/if_ether.h>
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2015-03-27 11:24:57 +00:00
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include file for physical-layer protocols.
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environ.7, epoll.7, feature_test_macros.7, futex.7, ip.7, ipv6.7, locale.7, man-pages.7, man.7, math_error.7, netdevice.7, netlink.7, packet.7, raw.7, rtld-audit.7, rtnetlink.7, sock_diag.7, socket.7, tcp.7, udp.7, udplite.7, unix.7, uri.7, vdso.7: Formatting fix: replace blank lines with .PP/.IP
Blank lines shouldn't generally appear in *roff source (other
than in code examples), since they create large vertical
spaces between text blocks.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 01:01:48 +00:00
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.PP
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2014-04-29 11:57:47 +00:00
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The Linux kernel source tree.
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.IR /Documentation/networking/filter.txt
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describes how to apply Berkeley Packet Filters to packet sockets.
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2014-04-23 10:10:14 +00:00
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.IR /tools/testing/selftests/net/psock_tpacket.c
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2014-04-29 11:57:47 +00:00
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contains example source code for all available versions of
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.BR PACKET_RX_RING
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and
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.BR PACKET_TX_RING .
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