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| /openbmc/linux/net/ipv4/ |
| H A D | tcp_bpf.c | 9072931f Tue Nov 29 04:40:40 CST 2022 Pengcheng Yang <yangpc@wangsu.com> bpf, sockmap: Fix data loss caused by using apply_bytes on ingress redirect
Use apply_bytes on ingress redirect, when apply_bytes is less than
the length of msg data, some data may be skipped and lost in
bpf_tcp_ingress().
If there is still data in the scatterlist that has not been consumed,
we cannot move the msg iter.
Fixes: 604326b41a6f ("bpf, sockmap: convert to generic sk_msg interface")
Signed-off-by: Pengcheng Yang <yangpc@wangsu.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/bpf/1669718441-2654-4-git-send-email-yangpc@wangsu.com
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