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bpf.2: Minor tweaks 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2015-07-22 20:17:57 +02:00
parent 4fba111eca
commit dc079fa280
1 changed files with 6 additions and 8 deletions
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14
man2/bpf.2
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@ -68,7 +68,7 @@ A user process can create multiple maps (with key/value-pairs being
opaque bytes of data) and access them via file descriptors.
eBPF programs can access maps from inside the kernel in parallel.
.\"
.\" FIXME What does the previous sentence mean?
.\" FIXME!! What does the previous sentence mean?
.\"
.\" Isn't "from inside the kernel" redundant? (I mean: all eBPF programs
.\" are running inside the kernel, right?)
@ -273,7 +273,7 @@ and attributes as specified in
.IR value_size ,
and
.IR max_entries .
.\" FIXME: In the next sentence, what does "process-local" mean?
.\" FIXME!! In the next sentence, what does "process-local" mean?
On success, this operation returns a process-local file descriptor.
On error, \-1 is returned and
.I errno
@ -315,7 +315,7 @@ expects to read 8 bytes from
.I key
pointer, but
.IR "fp\ -\ 4"
.\" FIXME I'm lost! What is 'fp' in this context?
.\" FIXME!! I'm lost! What is 'fp' in this context?
starting address will cause out-of-bounds stack access.
Similarly, when a map is created with a
@ -562,7 +562,7 @@ The following map types are supported:
.TP
.B BPF_MAP_TYPE_HASH
.\" commit 0f8e4bd8a1fc8c4185f1630061d0a1f2d197a475
.\" FIXME Please review the following list of points, which draws
.\" FIXME!! Please review the following list of points, which draws
.\" heavily from the commit message, but reworks the text significantly
.\" and so may have introduced errors.
Hash-table maps have the following characteristics:
@ -590,7 +590,7 @@ optimized for speed of lookup.
.TP
.B BPF_MAP_TYPE_ARRAY
.\" commit 28fbcfa08d8ed7c5a50d41a0433aad222835e8e3
.\" FIXME Please review the following list of points, which draws
.\" FIXME!! Please review the following list of points, which draws
.\" heavily from the commit message, but reworks the text significantly
.\" and so may have introduced errors.
Array maps have the following characteristics:
@ -854,7 +854,6 @@ ioctl(event_fd, PERF_EVENT_IOC_SET_BPF, prog_fd);
.\"
.\"
.SH EXAMPLES
.\" FIXME It would be nice if this was a complete working example
.nf
/* bpf+sockets example:
* 1. create array map of 256 elements
@ -1038,7 +1037,7 @@ commands require the caller to have the
.B CAP_SYS_ADMIN
capability.
.\" FIXME Alexei, is the following correct?
.\" FIXME!! Alexei, is the following correct?
eBPF objects (maps and programs) can be shared between processes.
For example, after
.BR fork (2),
@ -1062,7 +1061,6 @@ and passing structures as function arguments.)
Some examples can be found in the
.I samples/bpf/*_kern.c
files in the kernel source tree.
.\" samples/bpf/*_kern.c + samples/bpf/Makefile ?
.\" There are also examples for the tc classifier, in the iproute2
.\" project, in examples/bpf
.SH SEE ALSO