table of contents
| 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 filter code and then cut skb->data to correct size returned by sk_run_filter. 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 sk_run_filter. It returns 0 if the packet should be accepted or -EPERM if the packet should be tossed.
COPYRIGHT¶
| June 2024 | Kernel Hackers Manual 3.10 |