1SK_FILTER_TRIM_CAP(9)          Linux Networking          SK_FILTER_TRIM_CAP(9)
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NAME

6       sk_filter_trim_cap - run a packet through a socket filter
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SYNOPSIS

9       int sk_filter_trim_cap(struct sock * sk, struct sk_buff * skb,
10                              unsigned int cap);
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ARGUMENTS

13       sk
14           sock associated with sk_buff
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16       skb
17           buffer to filter
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19       cap
20           limit on how short the eBPF program may trim the packet
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DESCRIPTION

23       Run the filter code and then cut skb->data to correct size returned by
24       sk_run_filter. If pkt_len is 0 we toss packet. If skb->len is smaller
25       than pkt_len we keep whole skb->data. This is the socket level wrapper
26       to sk_run_filter. It returns 0 if the packet should be accepted or
27       -EPERM if the packet should be tossed.
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30Kernel Hackers Manual 3.10         June 2019             SK_FILTER_TRIM_CAP(9)
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