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| author | Shannon Nelson <shannon.nelson@oracle.com> | 2017-02-13 10:57:02 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-02-14 13:04:10 -0500 |
| commit | daa86e50f649fccadafc53994ddc4254d75a008b (patch) | |
| tree | 9ef350b43f92ca45362e50ea538e4a9d805e222a /drivers/net/ethernet/sun | |
| parent | bf091f3f362b3c562a18bbf7a2d3e2f3a36eba1d (diff) | |
| download | linux-stable-daa86e50f649fccadafc53994ddc4254d75a008b.tar.gz linux-stable-daa86e50f649fccadafc53994ddc4254d75a008b.tar.bz2 linux-stable-daa86e50f649fccadafc53994ddc4254d75a008b.zip | |
sunvnet: remove extra rcu_read_unlocks
The RCU read lock is grabbed first thing in sunvnet_start_xmit_common()
so it always needs to be released. This removes the conditional release
in the dropped packet error path and removes a couple of superfluous
calls in the middle of the code.
Reported-by: Bijan Mottahedeh <bijan.mottahedeh@oracle.com>
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/sun')
| -rw-r--r-- | drivers/net/ethernet/sun/sunvnet_common.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/drivers/net/ethernet/sun/sunvnet_common.c b/drivers/net/ethernet/sun/sunvnet_common.c index d124bdebf636..65f7038e82fe 100644 --- a/drivers/net/ethernet/sun/sunvnet_common.c +++ b/drivers/net/ethernet/sun/sunvnet_common.c @@ -1253,10 +1253,8 @@ int sunvnet_start_xmit_common(struct sk_buff *skb, struct net_device *dev, rcu_read_lock(); port = vnet_tx_port(skb, dev); - if (unlikely(!port)) { - rcu_read_unlock(); + if (unlikely(!port)) goto out_dropped; - } if (skb_is_gso(skb) && skb->len > port->tsolen) { err = vnet_handle_offloads(port, skb, vnet_tx_port); @@ -1281,7 +1279,6 @@ int sunvnet_start_xmit_common(struct sk_buff *skb, struct net_device *dev, fl4.saddr = ip_hdr(skb)->saddr; rt = ip_route_output_key(dev_net(dev), &fl4); - rcu_read_unlock(); if (!IS_ERR(rt)) { skb_dst_set(skb, &rt->dst); icmp_send(skb, ICMP_DEST_UNREACH, @@ -1441,8 +1438,7 @@ out_dropped: jiffies + VNET_CLEAN_TIMEOUT); else if (port) del_timer(&port->clean_timer); - if (port) - rcu_read_unlock(); + rcu_read_unlock(); if (skb) dev_kfree_skb(skb); vnet_free_skbs(freeskbs); |