X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=net%2Fipv4%2Fudp.c;h=514c1e9ae81036b90d93fedb38a61000edcae2c7;hb=a468701db58a8b3e08e3f55fa6ac66db42014922;hp=f136cec96d959c2f94c18078ae35b62a68985099;hpb=12157a8d78af50842774bedb80b7b84a87f60951;p=linux-2.6-omap-h63xx.git

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index f136cec96d9..514c1e9ae81 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -429,7 +429,7 @@ static int udp_push_pending_frames(struct sock *sk, struct udp_sock *up)
 		/*
 		 * Only one fragment on the socket.
 		 */
-		if (skb->ip_summed == CHECKSUM_HW) {
+		if (skb->ip_summed == CHECKSUM_PARTIAL) {
 			skb->csum = offsetof(struct udphdr, check);
 			uh->check = ~csum_tcpudp_magic(fl->fl4_src, fl->fl4_dst,
 					up->len, IPPROTO_UDP, 0);
@@ -448,7 +448,7 @@ static int udp_push_pending_frames(struct sock *sk, struct udp_sock *up)
 		 * fragments on the socket so that all csums of sk_buffs
 		 * should be together.
 		 */
-		if (skb->ip_summed == CHECKSUM_HW) {
+		if (skb->ip_summed == CHECKSUM_PARTIAL) {
 			int offset = (unsigned char *)uh - skb->data;
 			skb->csum = skb_checksum(skb, offset, skb->len - offset, 0);
 
@@ -603,6 +603,7 @@ int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 				    .uli_u = { .ports =
 					       { .sport = inet->sport,
 						 .dport = dport } } };
+		security_sk_classify_flow(sk, &fl);
 		err = ip_route_output_flow(&rt, &fl, sk, !(msg->msg_flags&MSG_DONTWAIT));
 		if (err)
 			goto out;
@@ -661,6 +662,16 @@ out:
 		UDP_INC_STATS_USER(UDP_MIB_OUTDATAGRAMS);
 		return len;
 	}
+	/*
+	 * ENOBUFS = no kernel mem, SOCK_NOSPACE = no sndbuf space.  Reporting
+	 * ENOBUFS might not be good (it's not tunable per se), but otherwise
+	 * we don't have a good statistic (IpOutDiscards but it can be too many
+	 * things).  We could add another new stat but at least for now that
+	 * seems like overkill.
+	 */
+	if (err == -ENOBUFS || test_bit(SOCK_NOSPACE, &sk->sk_socket->flags)) {
+		UDP_INC_STATS_USER(UDP_MIB_SNDBUFERRORS);
+	}
 	return err;
 
 do_confirm:
@@ -980,6 +991,7 @@ static int udp_encap_rcv(struct sock * sk, struct sk_buff *skb)
 static int udp_queue_rcv_skb(struct sock * sk, struct sk_buff *skb)
 {
 	struct udp_sock *up = udp_sk(sk);
+	int rc;
 
 	/*
 	 *	Charge it to the socket, dropping if the queue is full.
@@ -1026,7 +1038,10 @@ static int udp_queue_rcv_skb(struct sock * sk, struct sk_buff *skb)
 		skb->ip_summed = CHECKSUM_UNNECESSARY;
 	}
 
-	if (sock_queue_rcv_skb(sk,skb)<0) {
+	if ((rc = sock_queue_rcv_skb(sk,skb)) < 0) {
+		/* Note that an ENOMEM error is charged twice */
+		if (rc == -ENOMEM)
+			UDP_INC_STATS_BH(UDP_MIB_RCVBUFERRORS);
 		UDP_INC_STATS_BH(UDP_MIB_INERRORS);
 		kfree_skb(skb);
 		return -1;
@@ -1087,7 +1102,7 @@ static void udp_checksum_init(struct sk_buff *skb, struct udphdr *uh,
 {
 	if (uh->check == 0) {
 		skb->ip_summed = CHECKSUM_UNNECESSARY;
-	} else if (skb->ip_summed == CHECKSUM_HW) {
+	} else if (skb->ip_summed == CHECKSUM_COMPLETE) {
 		if (!udp_check(uh, ulen, saddr, daddr, skb->csum))
 			skb->ip_summed = CHECKSUM_UNNECESSARY;
 	}