old-www/HOWTO/SCSI-Generic-HOWTO/g_sg_tabsz.html

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>SG_GET_SG_TABLESIZE 0x227F. </B
>Assumes 3rd argument points to an int and places the maximum number of
scatter gather elements supported by the host adapter associated with
the current SCSI device. 0 indicates that the adapter does support scatter
gather.</P
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