ipv4: Compute net once in ip_rcv

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index f4fc8a77aaa79dcb5156bfb2de84efdf24808713..ff908863f22ebb0ed9fc2ae5bc12cfeff1b214b1 100644 (file)
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -378,6 +378,7 @@ 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 +388,12 @@ 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 +419,7 @@ 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 +433,7 @@ 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 +443,7 @@ 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;
        }
 
@@ -458,9 +460,9 @@ int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt,
                       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: