Helper function bpf_lwt_seg6_adjust_srh
Definition
Copyright (c) 2015 The Libbpf Authors. All rights reserved.
Adjust the size allocated to TLVs in the outermost IPv6 Segment Routing Header contained in the packet associated to skb, at position offset by delta bytes. Only offsets after the segments are accepted. delta can be as well positive (growing) as negative (shrinking).
A call to this helper is susceptible to change the underlying packet buffer. Therefore, at load time, all checks on pointers previously done by the verifier are invalidated and must be performed again, if the helper is used in combination with direct packet access.
Returns
0 on success, or a negative error in case of failure.
static long (* const bpf_lwt_seg6_adjust_srh)(struct __sk_buff *skb, __u32 offset, __s32 delta) = (void *) 75;
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