1 files changed, 14 insertions, 59 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index cb8caa93caca..e61b95c11fc0 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1708,72 +1708,27 @@ out_kfree_skb:
         return 0;
 }
 
-static u32 simple_tx_hashrnd;
-static int simple_tx_hashrnd_initialized = 0;
+static u32 skb_tx_hashrnd;
+static int skb_tx_hashrnd_initialized = 0;
 
-static u16 simple_tx_hash(struct net_device *dev, struct sk_buff *skb)
+static u16 skb_tx_hash(struct net_device *dev, struct sk_buff *skb)
 {
-        u32 addr1, addr2, ports;
-        u32 hash, ihl;
-        u8 ip_proto = 0;
+        u32 hash;
 
-        if (unlikely(!simple_tx_hashrnd_initialized)) {
-                get_random_bytes(&simple_tx_hashrnd, 4);
-                simple_tx_hashrnd_initialized = 1;
+        if (unlikely(!skb_tx_hashrnd_initialized)) {
+                get_random_bytes(&skb_tx_hashrnd, 4);
+                skb_tx_hashrnd_initialized = 1;
         }
 
         if (skb_rx_queue_recorded(skb)) {
-                u32 val = skb_get_rx_queue(skb);
-
-                hash = jhash_1word(val, simple_tx_hashrnd);
-                goto out;
-        }
-
-        if (skb->sk && skb->sk->sk_hash) {
-                u32 val = skb->sk->sk_hash;
-
-                hash = jhash_1word(val, simple_tx_hashrnd);
-                goto out;
-        }
-
-        switch (skb->protocol) {
-        case htons(ETH_P_IP):
-                if (!(ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)))
-                        ip_proto = ip_hdr(skb)->protocol;
-                addr1 = ip_hdr(skb)->saddr;
-                addr2 = ip_hdr(skb)->daddr;
-                ihl = ip_hdr(skb)->ihl;
-                break;
-        case htons(ETH_P_IPV6):
-                ip_proto = ipv6_hdr(skb)->nexthdr;
-                addr1 = ipv6_hdr(skb)->saddr.s6_addr32[3];
-                addr2 = ipv6_hdr(skb)->daddr.s6_addr32[3];
-                ihl = (40 >> 2);
-                break;
-        default:
-                return 0;
-        }
-
-
-        switch (ip_proto) {
-        case IPPROTO_TCP:
-        case IPPROTO_UDP:
-        case IPPROTO_DCCP:
-        case IPPROTO_ESP:
-        case IPPROTO_AH:
-        case IPPROTO_SCTP:
-        case IPPROTO_UDPLITE:
-                ports = *((u32 *) (skb_network_header(skb) + (ihl * 4)));
-                break;
-
-        default:
-                ports = 0;
-                break;
-        }
+                hash = skb_get_rx_queue(skb);
+        } else if (skb->sk && skb->sk->sk_hash) {
+                hash = skb->sk->sk_hash;
+        } else
+                hash = skb->protocol;
 
-        hash = jhash_3words(addr1, addr2, ports, simple_tx_hashrnd);
+        hash = jhash_1word(hash, skb_tx_hashrnd);
 
-out:
         return (u16) (((u64) hash * dev->real_num_tx_queues) >> 32);
 }
 
@@ -1786,7 +1741,7 @@ static struct netdev_queue *dev_pick_tx(struct net_device *dev,
         if (ops->ndo_select_queue)
                 queue_index = ops->ndo_select_queue(dev, skb);
         else if (dev->real_num_tx_queues > 1)
-                queue_index = simple_tx_hash(dev, skb);
+                queue_index = skb_tx_hash(dev, skb);
 
         skb_set_queue_mapping(skb, queue_index);
         return netdev_get_tx_queue(dev, queue_index);