[PATCH v3 net-next 06/15] smack: Remove IPPROTO_UDPLITE support in security_sock_rcv_skb().

[Kuniyuki Iwashima]

smack_socket_sock_rcv_skb() is registered as socket_sock_rcv_skb,
which is called as security_sock_rcv_skb() in sk_filter_trim_cap().

Now that UDP-Lite is gone, let's remove the IPPROTO_UDPLITE support
in smack_socket_sock_rcv_skb().

Signed-off-by: Kuniyuki Iwashima <kuniyu at google.com>
Reviewed-by: Willem de Bruijn <willemb at google.com>
Acked-by: Casey Schaufler <casey at schaufler-ca.com>
---
Cc: Paul Moore <paul at paul-moore.com>
Cc: James Morris <jmorris at namei.org>
Cc: "Serge E. Hallyn" <serge at hallyn.com>
Cc: linux-security-module at vger.kernel.org
---
 security/smack/smack_lsm.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index 98af9d7b9434..e581d6465946 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -4176,7 +4176,6 @@ static int smk_skb_to_addr_ipv6(struct sk_buff *skb, struct sockaddr_in6 *sip)
 			sip->sin6_port = th->source;
 		break;
 	case IPPROTO_UDP:
-	case IPPROTO_UDPLITE:
 		uh = skb_header_pointer(skb, offset, sizeof(_udph), &_udph);
 		if (uh != NULL)
 			sip->sin6_port = uh->source;
@@ -4301,8 +4300,7 @@ static int smack_socket_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
 #if IS_ENABLED(CONFIG_IPV6)
 	case PF_INET6:
 		proto = smk_skb_to_addr_ipv6(skb, &sadd);
-		if (proto != IPPROTO_UDP && proto != IPPROTO_UDPLITE &&
-		    proto != IPPROTO_TCP)
+		if (proto != IPPROTO_UDP && proto != IPPROTO_TCP)
 			break;
 #ifdef SMACK_IPV6_SECMARK_LABELING
 		skp = smack_from_skb(skb);
-- 
2.53.0.473.g4a7958ca14-goog