SK_FILTER_TRIM_CAP(9) - phpMan
SK_FILTER_TRIM_CAP(9) Linux Networking SK_FILTER_TRIM_CAP(9)
NAME
sk_filter_trim_cap - run a packet through a socket filter
SYNOPSIS
int sk_filter_trim_cap(struct sock * sk, struct sk_buff * skb, unsigned int cap);
ARGUMENTS
sk
sock associated with sk_buff
skb
buffer to filter
cap
limit on how short the eBPF program may trim the packet
DESCRIPTION
Run the eBPF program and then cut skb->data to correct size returned by the program. If
pkt_len is 0 we toss packet. If skb->len is smaller than pkt_len we keep whole skb->data.
This is the socket level wrapper to BPF_PROG_RUN. It returns 0 if the packet should be
accepted or -EPERM if the packet should be tossed.
COPYRIGHT
Kernel Hackers Manual 4.8. January 2017 SK_FILTER_TRIM_CAP(9)
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