diff options
| author | Pengcheng Yang <yangpc@wangsu.com> | 2022-11-29 18:40:39 +0800 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2022-12-01 01:07:32 +0100 |
| commit | a351d6087bf7d3d8440d58d3bf244ec64b89394a (patch) | |
| tree | b701f761fd3d6e2bcd554587a06343e0817dd05c /net/tls | |
| parent | 7a9841ca025275b5b0edfb0b618934abb6ceec15 (diff) | |
| download | linux-a351d6087bf7d3d8440d58d3bf244ec64b89394a.tar.gz | |
bpf, sockmap: Fix missing BPF_F_INGRESS flag when using apply_bytes
When redirecting, we use sk_msg_to_ingress() to get the BPF_F_INGRESS
flag from the msg->flags. If apply_bytes is used and it is larger than
the current data being processed, sk_psock_msg_verdict() will not be
called when sendmsg() is called again. At this time, the msg->flags is 0,
and we lost the BPF_F_INGRESS flag.
So we need to save the BPF_F_INGRESS flag in sk_psock and use it when
redirection.
Fixes: 8934ce2fd081 ("bpf: sockmap redirect ingress support")
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/1669718441-2654-3-git-send-email-yangpc@wangsu.com
Diffstat (limited to 'net/tls')
| -rw-r--r-- | net/tls/tls_sw.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c index 264cf367e2656..9ed9786341259 100644 --- a/net/tls/tls_sw.c +++ b/net/tls/tls_sw.c @@ -792,7 +792,7 @@ static int bpf_exec_tx_verdict(struct sk_msg *msg, struct sock *sk, struct sk_psock *psock; struct sock *sk_redir; struct tls_rec *rec; - bool enospc, policy; + bool enospc, policy, redir_ingress; int err = 0, send; u32 delta = 0; @@ -837,6 +837,7 @@ more_data: } break; case __SK_REDIRECT: + redir_ingress = psock->redir_ingress; sk_redir = psock->sk_redir; memcpy(&msg_redir, msg, sizeof(*msg)); if (msg->apply_bytes < send) @@ -846,7 +847,8 @@ more_data: sk_msg_return_zero(sk, msg, send); msg->sg.size -= send; release_sock(sk); - err = tcp_bpf_sendmsg_redir(sk_redir, &msg_redir, send, flags); + err = tcp_bpf_sendmsg_redir(sk_redir, redir_ingress, + &msg_redir, send, flags); lock_sock(sk); if (err < 0) { *copied -= sk_msg_free_nocharge(sk, &msg_redir); |