---

yaml
---
r: 31334
b: refs/heads/master
c: b0da853
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 877ce7c1b3afd69a9b1caeb1b9964c992641f52a
+refs/heads/master: b0da8537037f337103348f239ad901477e907aa8

trunk/include/linux/netdevice.h

@@ -316,6 +316,7 @@ struct net_device
 #define NETIF_F_TSO		(SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)
 #define NETIF_F_UFO		(SKB_GSO_UDPV4 << NETIF_F_GSO_SHIFT)
 #define NETIF_F_GSO_ROBUST	(SKB_GSO_DODGY << NETIF_F_GSO_SHIFT)
+#define NETIF_F_TSO_ECN		(SKB_GSO_TCPV4_ECN << NETIF_F_GSO_SHIFT)
 
 #define NETIF_F_GEN_CSUM	(NETIF_F_NO_CSUM | NETIF_F_HW_CSUM)
 #define NETIF_F_ALL_CSUM	(NETIF_F_IP_CSUM | NETIF_F_GEN_CSUM)

trunk/include/linux/skbuff.h

@@ -175,6 +175,9 @@ enum {
 
 	/* This indicates the skb is from an untrusted source. */
 	SKB_GSO_DODGY = 1 << 2,
+
+	/* This indicates the tcp segment has CWR set. */
+	SKB_GSO_TCPV4_ECN = 1 << 3,
 };
 
 /** 

trunk/include/net/sock.h

@@ -383,7 +383,6 @@ enum sock_flags {
 	SOCK_USE_WRITE_QUEUE, /* whether to call sk->sk_write_space in sock_wfree */
 	SOCK_DBG, /* %SO_DEBUG setting */
 	SOCK_RCVTSTAMP, /* %SO_TIMESTAMP setting */
-	SOCK_NO_LARGESEND, /* whether to sent large segments or not */
 	SOCK_LOCALROUTE, /* route locally only, %SO_DONTROUTE setting */
 	SOCK_QUEUE_SHRUNK, /* write queue has been shrunk recently */
 };
@@ -1033,7 +1032,7 @@ static inline void sk_setup_caps(struct sock *sk, struct dst_entry *dst)
 	if (sk->sk_route_caps & NETIF_F_GSO)
 		sk->sk_route_caps |= NETIF_F_TSO;
 	if (sk->sk_route_caps & NETIF_F_TSO) {
-		if (sock_flag(sk, SOCK_NO_LARGESEND) || dst->header_len)
+		if (dst->header_len)
 			sk->sk_route_caps &= ~NETIF_F_TSO;
 		else 
 			sk->sk_route_caps |= NETIF_F_SG | NETIF_F_HW_CSUM;

trunk/include/net/tcp_ecn.h

@@ -31,10 +31,9 @@ static inline void TCP_ECN_send_syn(struct sock *sk, struct tcp_sock *tp,
 				    struct sk_buff *skb)
 {
 	tp->ecn_flags = 0;
-	if (sysctl_tcp_ecn && !(sk->sk_route_caps & NETIF_F_TSO)) {
+	if (sysctl_tcp_ecn) {
 		TCP_SKB_CB(skb)->flags |= TCPCB_FLAG_ECE|TCPCB_FLAG_CWR;
 		tp->ecn_flags = TCP_ECN_OK;
-		sock_set_flag(sk, SOCK_NO_LARGESEND);
 	}
 }
 
@@ -56,6 +55,9 @@ static inline void TCP_ECN_send(struct sock *sk, struct tcp_sock *tp,
 			if (tp->ecn_flags&TCP_ECN_QUEUE_CWR) {
 				tp->ecn_flags &= ~TCP_ECN_QUEUE_CWR;
 				skb->h.th->cwr = 1;
+				if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV4)
+					skb_shinfo(skb)->gso_type |=
+						SKB_GSO_TCPV4_ECN;
 			}
 		} else {
 			/* ACK or retransmitted segment: clear ECT|CE */

trunk/net/ipv4/tcp_input.c

@@ -4178,8 +4178,6 @@ static int tcp_rcv_synsent_state_process(struct sock *sk, struct sk_buff *skb,
 		 */
 
 		TCP_ECN_rcv_synack(tp, th);
-		if (tp->ecn_flags&TCP_ECN_OK)
-			sock_set_flag(sk, SOCK_NO_LARGESEND);
 
 		tp->snd_wl1 = TCP_SKB_CB(skb)->seq;
 		tcp_ack(sk, skb, FLAG_SLOWPATH);
@@ -4322,8 +4320,6 @@ static int tcp_rcv_synsent_state_process(struct sock *sk, struct sk_buff *skb,
 		tp->max_window = tp->snd_wnd;
 
 		TCP_ECN_rcv_syn(tp, th);
-		if (tp->ecn_flags&TCP_ECN_OK)
-			sock_set_flag(sk, SOCK_NO_LARGESEND);
 
 		tcp_mtup_init(sk);
 		tcp_sync_mss(sk, icsk->icsk_pmtu_cookie);

trunk/net/ipv4/tcp_minisocks.c

@@ -440,8 +440,6 @@ struct sock *tcp_create_openreq_child(struct sock *sk, struct request_sock *req,
 			newicsk->icsk_ack.last_seg_size = skb->len - newtp->tcp_header_len;
 		newtp->rx_opt.mss_clamp = req->mss;
 		TCP_ECN_openreq_child(newtp, req);
-		if (newtp->ecn_flags&TCP_ECN_OK)
-			sock_set_flag(newsk, SOCK_NO_LARGESEND);
 
 		TCP_INC_STATS_BH(TCP_MIB_PASSIVEOPENS);
 	}

trunk/net/ipv4/tcp_output.c

@@ -2044,8 +2044,6 @@ struct sk_buff * tcp_make_synack(struct sock *sk, struct dst_entry *dst,
 	memset(th, 0, sizeof(struct tcphdr));
 	th->syn = 1;
 	th->ack = 1;
-	if (dst->dev->features&NETIF_F_TSO)
-		ireq->ecn_ok = 0;
 	TCP_ECN_make_synack(req, th);
 	th->source = inet_sk(sk)->sport;
 	th->dest = ireq->rmt_port;