Helper function bpf_tcp_raw_check_syncookie_ipv4
Definition
Copyright (c) 2015 The Libbpf Authors. All rights reserved.
Check whether iph and th contain a valid SYN cookie ACK without depending on a listening socket.
iph points to the IPv4 header.
th points to the TCP header.
Returns
0 if iph and th are a valid SYN cookie ACK.
On failure, the returned value is one of the following:
-EACCES if the SYN cookie is not valid.
static long (* const bpf_tcp_raw_check_syncookie_ipv4)(struct iphdr *iph, struct tcphdr *th) = (void *) 206;
Usage
Docs could be improved
This part of the docs is incomplete, contributions are very welcome
Program types
This helper call can be used in the following program types:
Example
Docs could be improved
This part of the docs is incomplete, contributions are very welcome