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path: root/net/ipv4/ip_input.c
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Diffstat (limited to 'net/ipv4/ip_input.c')
-rw-r--r--net/ipv4/ip_input.c47
1 files changed, 23 insertions, 24 deletions
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index f4fc8a77aaa7..b1209b63381f 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -157,6 +157,7 @@ bool ip_call_ra_chain(struct sk_buff *skb)
u8 protocol = ip_hdr(skb)->protocol;
struct sock *last = NULL;
struct net_device *dev = skb->dev;
+ struct net *net = dev_net(dev);
for (ra = rcu_dereference(ip_ra_chain); ra; ra = rcu_dereference(ra->next)) {
struct sock *sk = ra->sk;
@@ -167,9 +168,9 @@ bool ip_call_ra_chain(struct sk_buff *skb)
if (sk && inet_sk(sk)->inet_num == protocol &&
(!sk->sk_bound_dev_if ||
sk->sk_bound_dev_if == dev->ifindex) &&
- net_eq(sock_net(sk), dev_net(dev))) {
+ net_eq(sock_net(sk), net)) {
if (ip_is_fragment(ip_hdr(skb))) {
- if (ip_defrag(skb, IP_DEFRAG_CALL_RA_CHAIN))
+ if (ip_defrag(net, skb, IP_DEFRAG_CALL_RA_CHAIN))
return true;
}
if (last) {
@@ -188,10 +189,8 @@ bool ip_call_ra_chain(struct sk_buff *skb)
return false;
}
-static int ip_local_deliver_finish(struct sock *sk, struct sk_buff *skb)
+static int ip_local_deliver_finish(struct net *net, struct sock *sk, struct sk_buff *skb)
{
- struct net *net = dev_net(skb->dev);
-
__skb_pull(skb, skb_network_header_len(skb));
rcu_read_lock();
@@ -248,14 +247,15 @@ int ip_local_deliver(struct sk_buff *skb)
/*
* Reassemble IP fragments.
*/
+ struct net *net = dev_net(skb->dev);
if (ip_is_fragment(ip_hdr(skb))) {
- if (ip_defrag(skb, IP_DEFRAG_LOCAL_DELIVER))
+ if (ip_defrag(net, skb, IP_DEFRAG_LOCAL_DELIVER))
return 0;
}
- return NF_HOOK(NFPROTO_IPV4, NF_INET_LOCAL_IN, NULL, skb,
- skb->dev, NULL,
+ return NF_HOOK(NFPROTO_IPV4, NF_INET_LOCAL_IN,
+ net, NULL, skb, skb->dev, NULL,
ip_local_deliver_finish);
}
@@ -311,7 +311,7 @@ drop:
int sysctl_ip_early_demux __read_mostly = 1;
EXPORT_SYMBOL(sysctl_ip_early_demux);
-static int ip_rcv_finish(struct sock *sk, struct sk_buff *skb)
+static int ip_rcv_finish(struct net *net, struct sock *sk, struct sk_buff *skb)
{
const struct iphdr *iph = ip_hdr(skb);
struct rtable *rt;
@@ -337,8 +337,7 @@ static int ip_rcv_finish(struct sock *sk, struct sk_buff *skb)
iph->tos, skb->dev);
if (unlikely(err)) {
if (err == -EXDEV)
- NET_INC_STATS_BH(dev_net(skb->dev),
- LINUX_MIB_IPRPFILTER);
+ NET_INC_STATS_BH(net, LINUX_MIB_IPRPFILTER);
goto drop;
}
}
@@ -359,11 +358,9 @@ static int ip_rcv_finish(struct sock *sk, struct sk_buff *skb)
rt = skb_rtable(skb);
if (rt->rt_type == RTN_MULTICAST) {
- IP_UPD_PO_STATS_BH(dev_net(rt->dst.dev), IPSTATS_MIB_INMCAST,
- skb->len);
+ IP_UPD_PO_STATS_BH(net, IPSTATS_MIB_INMCAST, skb->len);
} else if (rt->rt_type == RTN_BROADCAST)
- IP_UPD_PO_STATS_BH(dev_net(rt->dst.dev), IPSTATS_MIB_INBCAST,
- skb->len);
+ IP_UPD_PO_STATS_BH(net, IPSTATS_MIB_INBCAST, skb->len);
return dst_input(skb);
@@ -378,6 +375,7 @@ drop:
int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device *orig_dev)
{
const struct iphdr *iph;
+ struct net *net;
u32 len;
/* When the interface is in promisc. mode, drop all the crap
@@ -387,11 +385,12 @@ int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt,
goto drop;
- IP_UPD_PO_STATS_BH(dev_net(dev), IPSTATS_MIB_IN, skb->len);
+ net = dev_net(dev);
+ IP_UPD_PO_STATS_BH(net, IPSTATS_MIB_IN, skb->len);
skb = skb_share_check(skb, GFP_ATOMIC);
if (!skb) {
- IP_INC_STATS_BH(dev_net(dev), IPSTATS_MIB_INDISCARDS);
+ IP_INC_STATS_BH(net, IPSTATS_MIB_INDISCARDS);
goto out;
}
@@ -417,7 +416,7 @@ int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt,
BUILD_BUG_ON(IPSTATS_MIB_ECT1PKTS != IPSTATS_MIB_NOECTPKTS + INET_ECN_ECT_1);
BUILD_BUG_ON(IPSTATS_MIB_ECT0PKTS != IPSTATS_MIB_NOECTPKTS + INET_ECN_ECT_0);
BUILD_BUG_ON(IPSTATS_MIB_CEPKTS != IPSTATS_MIB_NOECTPKTS + INET_ECN_CE);
- IP_ADD_STATS_BH(dev_net(dev),
+ IP_ADD_STATS_BH(net,
IPSTATS_MIB_NOECTPKTS + (iph->tos & INET_ECN_MASK),
max_t(unsigned short, 1, skb_shinfo(skb)->gso_segs));
@@ -431,7 +430,7 @@ int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt,
len = ntohs(iph->tot_len);
if (skb->len < len) {
- IP_INC_STATS_BH(dev_net(dev), IPSTATS_MIB_INTRUNCATEDPKTS);
+ IP_INC_STATS_BH(net, IPSTATS_MIB_INTRUNCATEDPKTS);
goto drop;
} else if (len < (iph->ihl*4))
goto inhdr_error;
@@ -441,7 +440,7 @@ int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt,
* Note this now means skb->len holds ntohs(iph->tot_len).
*/
if (pskb_trim_rcsum(skb, len)) {
- IP_INC_STATS_BH(dev_net(dev), IPSTATS_MIB_INDISCARDS);
+ IP_INC_STATS_BH(net, IPSTATS_MIB_INDISCARDS);
goto drop;
}
@@ -453,14 +452,14 @@ int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt,
/* Must drop socket now because of tproxy. */
skb_orphan(skb);
- return NF_HOOK(NFPROTO_IPV4, NF_INET_PRE_ROUTING, NULL, skb,
- dev, NULL,
+ return NF_HOOK(NFPROTO_IPV4, NF_INET_PRE_ROUTING,
+ net, NULL, skb, dev, NULL,
ip_rcv_finish);
csum_error:
- IP_INC_STATS_BH(dev_net(dev), IPSTATS_MIB_CSUMERRORS);
+ IP_INC_STATS_BH(net, IPSTATS_MIB_CSUMERRORS);
inhdr_error:
- IP_INC_STATS_BH(dev_net(dev), IPSTATS_MIB_INHDRERRORS);
+ IP_INC_STATS_BH(net, IPSTATS_MIB_INHDRERRORS);
drop:
kfree_skb(skb);
out: