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-rw-r--r--net/ipv4/af_inet.c2
-rw-r--r--net/ipv4/datagram.c16
-rw-r--r--net/ipv4/gre_offload.c2
-rw-r--r--net/ipv4/ip_fragment.c7
-rw-r--r--net/ipv4/ip_tunnel.c8
-rw-r--r--net/ipv4/udp.c15
6 files changed, 35 insertions, 15 deletions
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 951fe55b1671..f4c804dbd3b4 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1291,7 +1291,7 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb,
encap = SKB_GSO_CB(skb)->encap_level > 0;
if (encap)
- features = skb->dev->hw_enc_features & netif_skb_features(skb);
+ features &= skb->dev->hw_enc_features;
SKB_GSO_CB(skb)->encap_level += ihl;
skb_reset_transport_header(skb);
diff --git a/net/ipv4/datagram.c b/net/ipv4/datagram.c
index a3095fdefbed..f0c307cb6196 100644
--- a/net/ipv4/datagram.c
+++ b/net/ipv4/datagram.c
@@ -20,7 +20,7 @@
#include <net/route.h>
#include <net/tcp_states.h>
-int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+int __ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
{
struct inet_sock *inet = inet_sk(sk);
struct sockaddr_in *usin = (struct sockaddr_in *) uaddr;
@@ -39,8 +39,6 @@ int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
sk_dst_reset(sk);
- lock_sock(sk);
-
oif = sk->sk_bound_dev_if;
saddr = inet->inet_saddr;
if (ipv4_is_multicast(usin->sin_addr.s_addr)) {
@@ -81,9 +79,19 @@ int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
sk_dst_set(sk, &rt->dst);
err = 0;
out:
- release_sock(sk);
return err;
}
+EXPORT_SYMBOL(__ip4_datagram_connect);
+
+int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
+{
+ int res;
+
+ lock_sock(sk);
+ res = __ip4_datagram_connect(sk, uaddr, addr_len);
+ release_sock(sk);
+ return res;
+}
EXPORT_SYMBOL(ip4_datagram_connect);
/* Because UDP xmit path can manipulate sk_dst_cache without holding
diff --git a/net/ipv4/gre_offload.c b/net/ipv4/gre_offload.c
index 278836f1a5ad..0da513e7730a 100644
--- a/net/ipv4/gre_offload.c
+++ b/net/ipv4/gre_offload.c
@@ -69,7 +69,7 @@ static struct sk_buff *gre_gso_segment(struct sk_buff *skb,
skb->mac_len = skb_inner_network_offset(skb);
/* segment inner packet. */
- enc_features = skb->dev->hw_enc_features & netif_skb_features(skb);
+ enc_features = skb->dev->hw_enc_features & features;
segs = skb_mac_gso_segment(skb, enc_features);
if (!segs || IS_ERR(segs)) {
skb_gso_error_unwind(skb, protocol, ghl, mac_offset, mac_len);
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index 9ff497d17545..3f3a424ef0d5 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -357,7 +357,7 @@ static int ip_frag_queue(struct ipq *qp, struct sk_buff *skb)
ihl = ip_hdrlen(skb);
/* Determine the position of this fragment. */
- end = offset + skb->len - ihl;
+ end = offset + skb->len - skb_network_offset(skb) - ihl;
err = -EINVAL;
/* Is this the final fragment? */
@@ -387,7 +387,7 @@ static int ip_frag_queue(struct ipq *qp, struct sk_buff *skb)
goto err;
err = -ENOMEM;
- if (pskb_pull(skb, ihl) == NULL)
+ if (!pskb_pull(skb, skb_network_offset(skb) + ihl))
goto err;
err = pskb_trim_rcsum(skb, end - offset);
@@ -628,6 +628,9 @@ static int ip_frag_reasm(struct ipq *qp, struct sk_buff *prev,
iph->frag_off = qp->q.max_size ? htons(IP_DF) : 0;
iph->tot_len = htons(len);
iph->tos |= ecn;
+
+ ip_send_check(iph);
+
IP_INC_STATS_BH(net, IPSTATS_MIB_REASMOKS);
qp->q.fragments = NULL;
qp->q.fragments_tail = NULL;
diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
index 0a4af0920af3..2d4be69c64f4 100644
--- a/net/ipv4/ip_tunnel.c
+++ b/net/ipv4/ip_tunnel.c
@@ -484,7 +484,8 @@ drop:
EXPORT_SYMBOL_GPL(ip_tunnel_rcv);
static int tnl_update_pmtu(struct net_device *dev, struct sk_buff *skb,
- struct rtable *rt, __be16 df)
+ struct rtable *rt, __be16 df,
+ const struct iphdr *inner_iph)
{
struct ip_tunnel *tunnel = netdev_priv(dev);
int pkt_size = skb->len - tunnel->hlen - dev->hard_header_len;
@@ -501,7 +502,8 @@ static int tnl_update_pmtu(struct net_device *dev, struct sk_buff *skb,
if (skb->protocol == htons(ETH_P_IP)) {
if (!skb_is_gso(skb) &&
- (df & htons(IP_DF)) && mtu < pkt_size) {
+ (inner_iph->frag_off & htons(IP_DF)) &&
+ mtu < pkt_size) {
memset(IPCB(skb), 0, sizeof(*IPCB(skb)));
icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED, htonl(mtu));
return -E2BIG;
@@ -632,7 +634,7 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
goto tx_error;
}
- if (tnl_update_pmtu(dev, skb, rt, tnl_params->frag_off)) {
+ if (tnl_update_pmtu(dev, skb, rt, tnl_params->frag_off, inner_iph)) {
ip_rt_put(rt);
goto tx_error;
}
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 21a3a9e90b10..6970e36ad7b8 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1957,12 +1957,19 @@ void udp_v4_early_demux(struct sk_buff *skb)
skb->sk = sk;
skb->destructor = sock_edemux;
- dst = sk->sk_rx_dst;
+ dst = ACCESS_ONCE(sk->sk_rx_dst);
if (dst)
dst = dst_check(dst, 0);
- if (dst)
- skb_dst_set_noref(skb, dst);
+ if (dst) {
+ /* DST_NOCACHE can not be used without taking a reference */
+ if (dst->flags & DST_NOCACHE) {
+ if (likely(atomic_inc_not_zero(&dst->__refcnt)))
+ skb_dst_set(skb, dst);
+ } else {
+ skb_dst_set_noref(skb, dst);
+ }
+ }
}
int udp_rcv(struct sk_buff *skb)
@@ -2510,7 +2517,7 @@ struct sk_buff *skb_udp_tunnel_segment(struct sk_buff *skb,
skb->protocol = htons(ETH_P_TEB);
/* segment inner packet. */
- enc_features = skb->dev->hw_enc_features & netif_skb_features(skb);
+ enc_features = skb->dev->hw_enc_features & features;
segs = skb_mac_gso_segment(skb, enc_features);
if (!segs || IS_ERR(segs)) {
skb_gso_error_unwind(skb, protocol, tnl_hlen, mac_offset,
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-27 21:10:28 +0000