diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2024-05-30 16:26:07 -0700 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2024-06-04 12:58:50 +0200 |
| commit | a535d59432370343058755100ee75ab03c0e3f91 (patch) | |
| tree | e4e1313b4888a18395e016d272f784aceccf30f3 /net/ipv4/tcp.c | |
| parent | d6301802607bc036823fb47abaa2cf92fb74db91 (diff) | |
| download | lwn-a535d59432370343058755100ee75ab03c0e3f91.tar.gz lwn-a535d59432370343058755100ee75ab03c0e3f91.zip | |
net: tls: fix marking packets as decrypted
For TLS offload we mark packets with skb->decrypted to make sure
they don't escape the host without getting encrypted first.
The crypto state lives in the socket, so it may get detached
by a call to skb_orphan(). As a safety check - the egress path
drops all packets with skb->decrypted and no "crypto-safe" socket.
The skb marking was added to sendpage only (and not sendmsg),
because tls_device injected data into the TCP stack using sendpage.
This special case was missed when sendpage got folded into sendmsg.
Fixes: c5c37af6ecad ("tcp: Convert do_tcp_sendpages() to use MSG_SPLICE_PAGES")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20240530232607.82686-1-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'net/ipv4/tcp.c')
| -rw-r--r-- | net/ipv4/tcp.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 681b54e1f3a6..4d8cc2ebb64c 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -1165,6 +1165,9 @@ new_segment: process_backlog++; +#ifdef CONFIG_SKB_DECRYPTED + skb->decrypted = !!(flags & MSG_SENDPAGE_DECRYPTED); +#endif tcp_skb_entail(sk, skb); copy = size_goal; |