X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=net%2Fipv6%2Ftcp_ipv6.c;h=b585c850a89a3737b1b6a19aab62dd7dd1cee5cb;hb=d315492b1a6ba29da0fa2860759505ae1b2db857;hp=cff778b23a7feca249b9edab81c9d6afdee8597b;hpb=cb28a1bbdb4790378e7366d6c9ee1d2340b84f92;p=mirror_ubuntu-zesty-kernel.git

diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index cff778b23a7f..b585c850a89a 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -69,7 +69,8 @@
 #include <linux/scatterlist.h>
 
 static void	tcp_v6_send_reset(struct sock *sk, struct sk_buff *skb);
-static void	tcp_v6_reqsk_send_ack(struct sk_buff *skb, struct request_sock *req);
+static void	tcp_v6_reqsk_send_ack(struct sock *sk, struct sk_buff *skb,
+				      struct request_sock *req);
 
 static int	tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb);
 
@@ -748,7 +749,7 @@ static int tcp_v6_md5_hash_pseudoheader(struct tcp_md5sig_pool *hp,
 	ipv6_addr_copy(&bp->saddr, saddr);
 	ipv6_addr_copy(&bp->daddr, daddr);
 	bp->protocol = cpu_to_be32(IPPROTO_TCP);
-	bp->len = cpu_to_be16(nbytes);
+	bp->len = cpu_to_be32(nbytes);
 
 	sg_init_one(&sg, bp, sizeof(*bp));
 	return crypto_hash_update(&hp->md5_desc, &sg, sizeof(*bp));
@@ -849,28 +850,17 @@ static int tcp_v6_inbound_md5_hash (struct sock *sk, struct sk_buff *skb)
 	hash_expected = tcp_v6_md5_do_lookup(sk, &ip6h->saddr);
 	hash_location = tcp_parse_md5sig_option(th);
 
-	/* do we have a hash as expected? */
-	if (!hash_expected) {
-		if (!hash_location)
-			return 0;
-		if (net_ratelimit()) {
-			printk(KERN_INFO "MD5 Hash NOT expected but found "
-			       "(" NIP6_FMT ", %u)->"
-			       "(" NIP6_FMT ", %u)\n",
-			       NIP6(ip6h->saddr), ntohs(th->source),
-			       NIP6(ip6h->daddr), ntohs(th->dest));
-		}
+	/* We've parsed the options - do we have a hash? */
+	if (!hash_expected && !hash_location)
+		return 0;
+
+	if (hash_expected && !hash_location) {
+		NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPMD5NOTFOUND);
 		return 1;
 	}
 
-	if (!hash_location) {
-		if (net_ratelimit()) {
-			printk(KERN_INFO "MD5 Hash expected but NOT found "
-			       "(" NIP6_FMT ", %u)->"
-			       "(" NIP6_FMT ", %u)\n",
-			       NIP6(ip6h->saddr), ntohs(th->source),
-			       NIP6(ip6h->daddr), ntohs(th->dest));
-		}
+	if (!hash_expected && hash_location) {
+		NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPMD5UNEXPECTED);
 		return 1;
 	}
 
@@ -1105,8 +1095,8 @@ static void tcp_v6_send_ack(struct sk_buff *skb, u32 seq, u32 ack, u32 win, u32
 		*topt++ = htonl((TCPOPT_NOP << 24) | (TCPOPT_NOP << 16) |
 				(TCPOPT_MD5SIG << 8) | TCPOLEN_MD5SIG);
 		tcp_v6_md5_hash_hdr((__u8 *)topt, key,
-				    &ipv6_hdr(skb)->daddr,
-				    &ipv6_hdr(skb)->saddr, t1);
+				    &ipv6_hdr(skb)->saddr,
+				    &ipv6_hdr(skb)->daddr, t1);
 	}
 #endif
 
@@ -1149,10 +1139,11 @@ static void tcp_v6_timewait_ack(struct sock *sk, struct sk_buff *skb)
 	inet_twsk_put(tw);
 }
 
-static void tcp_v6_reqsk_send_ack(struct sk_buff *skb, struct request_sock *req)
+static void tcp_v6_reqsk_send_ack(struct sock *sk, struct sk_buff *skb,
+				  struct request_sock *req)
 {
 	tcp_v6_send_ack(skb, tcp_rsk(req)->snt_isn + 1, tcp_rsk(req)->rcv_isn + 1, req->rcv_wnd, req->ts_recent,
-			tcp_v6_md5_do_lookup(skb->sk, &ipv6_hdr(skb)->daddr));
+			tcp_v6_md5_do_lookup(sk, &ipv6_hdr(skb)->daddr));
 }
 
 
@@ -2157,6 +2148,7 @@ static int tcpv6_net_init(struct net *net)
 static void tcpv6_net_exit(struct net *net)
 {
 	inet_ctl_sock_destroy(net->ipv6.tcp_sk);
+	inet_twsk_purge(net, &tcp_hashinfo, &tcp_death_row, AF_INET6);
 }
 
 static struct pernet_operations tcpv6_net_ops = {