Helper function bpf_lwt_seg6_store_bytes
Definition
Copyright (c) 2015 The Libbpf Authors. All rights reserved.
Store len bytes from address from into the packet associated to skb, at offset. Only the flags, tag and TLVs inside the outermost IPv6 Segment Routing Header can be modified through this helper.
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_store_bytes)(struct __sk_buff *skb, __u32 offset, const void *from, __u32 len) = (void *) 74;
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