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| author | Maciej Żenczykowski <maze@google.com> | 2023-06-05 04:06:54 -0700 |
|---|---|---|
| committer | Steffen Klassert <steffen.klassert@secunet.com> | 2023-06-09 08:16:34 +0200 |
| commit | 1166a530a84758bb9e6b448fc8c195ed413f5ded (patch) | |
| tree | 230364fc6f08e74bc483123d33815607d27b87a5 /net/ipv6 | |
| parent | bf06fcf4be0feefebd27deb8b60ad262f4230489 (diff) | |
| download | lwn-1166a530a84758bb9e6b448fc8c195ed413f5ded.tar.gz lwn-1166a530a84758bb9e6b448fc8c195ed413f5ded.zip | |
xfrm: fix inbound ipv4/udp/esp packets to UDPv6 dualstack sockets
Before Linux v5.8 an AF_INET6 SOCK_DGRAM (udp/udplite) socket
with SOL_UDP, UDP_ENCAP, UDP_ENCAP_ESPINUDP{,_NON_IKE} enabled
would just unconditionally use xfrm4_udp_encap_rcv(), afterwards
such a socket would use the newly added xfrm6_udp_encap_rcv()
which only handles IPv6 packets.
Cc: Sabrina Dubroca <sd@queasysnail.net>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Benedict Wong <benedictwong@google.com>
Cc: Yan Yan <evitayan@google.com>
Fixes: 0146dca70b87 ("xfrm: add support for UDPv6 encapsulation of ESP")
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/xfrm6_input.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv6/xfrm6_input.c b/net/ipv6/xfrm6_input.c index 04cbeefd8982..4907ab241d6b 100644 --- a/net/ipv6/xfrm6_input.c +++ b/net/ipv6/xfrm6_input.c @@ -86,6 +86,9 @@ int xfrm6_udp_encap_rcv(struct sock *sk, struct sk_buff *skb) __be32 *udpdata32; __u16 encap_type = up->encap_type; + if (skb->protocol == htons(ETH_P_IP)) + return xfrm4_udp_encap_rcv(sk, skb); + /* if this is not encapsulated socket, then just return now */ if (!encap_type) return 1; |