diff options
| author |   Jason Wang <jasowang@redhat.com> | 2017-06-06 14:09:49 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-06-06 16:23:31 -0400 |
| commit | feec084a7cf49adb4a87bea9867fb2ba99821f48 (patch) | |
| tree | 72b1cc88225820f34fa55ae58ea53a21d3419091 /drivers/net/tun.c | |
| parent | net: dsa: mv88e6xxx: fix 6085 frame mode masking (diff) | |
| download | linux-dev-feec084a7cf49adb4a87bea9867fb2ba99821f48.tar.xz linux-dev-feec084a7cf49adb4a87bea9867fb2ba99821f48.zip | |
tun: use symmetric hash
Tun actually expects a symmetric hash for queue selecting to work
correctly, otherwise packets belongs to a single flow may be
redirected to the wrong queue. So this patch switch to use
__skb_get_hash_symmetric().
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/tun.c')
| -rw-r--r-- | drivers/net/tun.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c index f8041f9c7e65..fe660e524af9 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -465,7 +465,7 @@ static u16 tun_select_queue(struct net_device *dev, struct sk_buff *skb, rcu_read_lock(); numqueues = ACCESS_ONCE(tun->numqueues); - txq = skb_get_hash(skb); + txq = __skb_get_hash_symmetric(skb); if (txq) { e = tun_flow_find(&tun->flows[tun_hashfn(txq)], txq); if (e) { @@ -867,7 +867,7 @@ static netdev_tx_t tun_net_xmit(struct sk_buff *skb, struct net_device *dev) */ __u32 rxhash; - rxhash = skb_get_hash(skb); + rxhash = __skb_get_hash_symmetric(skb); if (rxhash) { struct tun_flow_entry *e; e = tun_flow_find(&tun->flows[tun_hashfn(rxhash)], @@ -1334,7 +1334,7 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile, skb_reset_network_header(skb); skb_probe_transport_header(skb, 0); - rxhash = skb_get_hash(skb); + rxhash = __skb_get_hash_symmetric(skb); #ifndef CONFIG_4KSTACKS tun_rx_batched(tun, tfile, skb, more); #else |