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| author |   Liu Jian <liujian56@huawei.com> | 2021-10-29 22:12:14 +0800 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2021-11-01 17:08:21 +0100 |
| commit | 7303524e04af49a47991e19f895c3b8cdc3796c7 (patch) | |
| tree | 3f2050b6eb8fd1bdae37eda57fd6600828d12562 /tools | |
| parent | selftests/bpf: Fix strobemeta selftest regression (diff) | |
| download | linux-dev-7303524e04af49a47991e19f895c3b8cdc3796c7.tar.xz linux-dev-7303524e04af49a47991e19f895c3b8cdc3796c7.zip | |
skmsg: Lose offset info in sk_psock_skb_ingress
If sockmap enable strparser, there are lose offset info in
sk_psock_skb_ingress(). If the length determined by parse_msg function is not
skb->len, the skb will be converted to sk_msg multiple times, and userspace
app will get the data multiple times.
Fix this by get the offset and length from strp_msg. And as Cong suggested,
add one bit in skb->_sk_redir to distinguish enable or disable strparser.
Fixes: 604326b41a6fb ("bpf, sockmap: convert to generic sk_msg interface")
Signed-off-by: Liu Jian <liujian56@huawei.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Cong Wang <cong.wang@bytedance.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20211029141216.211899-1-liujian56@huawei.com
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions