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Diffstat (limited to 'include')
-rw-r--r--include/linux/netdevice.h1
-rw-r--r--include/linux/skbuff.h3
-rw-r--r--include/net/sock.h3
-rw-r--r--include/net/tcp_ecn.h6
4 files changed, 9 insertions, 4 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index efd1e2af0bf..aa2d3c12c4d 100644
--- a/include/linux/netdevice.h
+++ b/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)
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 5fb72da7da0..e74c294929a 100644
--- a/include/linux/skbuff.h
+++ b/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,
};
/**
diff --git a/include/net/sock.h b/include/net/sock.h
index 2d8d6adf161..7136bae48c2 100644
--- a/include/net/sock.h
+++ b/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;
diff --git a/include/net/tcp_ecn.h b/include/net/tcp_ecn.h
index c6b84397448..7bb366f7093 100644
--- a/include/net/tcp_ecn.h
+++ b/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 */