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Diffstat (limited to 'net/ipv4/af_inet.c')
-rw-r--r--net/ipv4/af_inet.c24
1 files changed, 17 insertions, 7 deletions
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index e31108e5ef79..f00499a46927 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -195,7 +195,7 @@ int inet_listen(struct socket *sock, int backlog)
{
struct sock *sk = sock->sk;
unsigned char old_state;
- int err;
+ int err, tcp_fastopen;
lock_sock(sk);
@@ -217,11 +217,12 @@ int inet_listen(struct socket *sock, int backlog)
* because the socket was in TCP_LISTEN state previously but
* was shutdown() rather than close().
*/
- if ((sysctl_tcp_fastopen & TFO_SERVER_WO_SOCKOPT1) &&
- (sysctl_tcp_fastopen & TFO_SERVER_ENABLE) &&
+ tcp_fastopen = sock_net(sk)->ipv4.sysctl_tcp_fastopen;
+ if ((tcp_fastopen & TFO_SERVER_WO_SOCKOPT1) &&
+ (tcp_fastopen & TFO_SERVER_ENABLE) &&
!inet_csk(sk)->icsk_accept_queue.fastopenq.max_qlen) {
fastopen_queue_tune(sk, backlog);
- tcp_fastopen_init_key_once(true);
+ tcp_fastopen_init_key_once(sock_net(sk));
}
err = inet_csk_listen_start(sk, backlog);
@@ -826,6 +827,7 @@ int inet_shutdown(struct socket *sock, int how)
err = -ENOTCONN;
/* Hack to wake up other listeners, who can poll for
POLLHUP, even on eg. unconnected UDP sockets -- RR */
+ /* fall through */
default:
sk->sk_shutdown |= how;
if (sk->sk_prot->shutdown)
@@ -839,7 +841,7 @@ int inet_shutdown(struct socket *sock, int how)
case TCP_LISTEN:
if (!(how & RCV_SHUTDOWN))
break;
- /* Fall through */
+ /* fall through */
case TCP_SYN_SENT:
err = sk->sk_prot->disconnect(sk, O_NONBLOCK);
sock->state = err ? SS_DISCONNECTING : SS_UNCONNECTED;
@@ -1221,9 +1223,10 @@ EXPORT_SYMBOL(inet_sk_rebuild_header);
struct sk_buff *inet_gso_segment(struct sk_buff *skb,
netdev_features_t features)
{
- bool fixedid = false, gso_partial, encap;
+ bool udpfrag = false, fixedid = false, gso_partial, encap;
struct sk_buff *segs = ERR_PTR(-EINVAL);
const struct net_offload *ops;
+ unsigned int offset = 0;
struct iphdr *iph;
int proto, tot_len;
int nhoff;
@@ -1258,6 +1261,7 @@ struct sk_buff *inet_gso_segment(struct sk_buff *skb,
segs = ERR_PTR(-EPROTONOSUPPORT);
if (!skb->encapsulation || encap) {
+ udpfrag = !!(skb_shinfo(skb)->gso_type & SKB_GSO_UDP);
fixedid = !!(skb_shinfo(skb)->gso_type & SKB_GSO_TCP_FIXEDID);
/* fixed ID is invalid if DF bit is not set */
@@ -1277,7 +1281,13 @@ struct sk_buff *inet_gso_segment(struct sk_buff *skb,
skb = segs;
do {
iph = (struct iphdr *)(skb_mac_header(skb) + nhoff);
- if (skb_is_gso(skb)) {
+ if (udpfrag) {
+ iph->frag_off = htons(offset >> 3);
+ if (skb->next)
+ iph->frag_off |= htons(IP_MF);
+ offset += skb->len - nhoff - ihl;
+ tot_len = skb->len - nhoff;
+ } else if (skb_is_gso(skb)) {
if (!fixedid) {
iph->id = htons(id);
id += skb_shinfo(skb)->gso_segs;