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[v2,net-next,01/12] bonding: remove bond->lock from bond_arp_rcv

Message ID 1389977940-17084-2-git-send-email-vfalico@redhat.com
State Changes Requested, archived
Delegated to: David Miller
Headers show

Commit Message

Veaceslav Falico Jan. 17, 2014, 4:58 p.m. UTC
We're always called with rcu_read_lock() held (bond_arp_rcv() is only
called from bond_handle_frame(), which is rx_handler and always called
under rcu from __netif_receive_skb_core() ).

The slave active/passive and/or bonding params can change in-flight, however
we don't really care about that - we only modify the last time packet was
received, which is harmless.

CC: Jay Vosburgh <fubar@us.ibm.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
---
 drivers/net/bonding/bond_main.c | 3 ---
 1 file changed, 3 deletions(-)
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Patch

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index f00dd45..479ca56 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -2292,8 +2292,6 @@  int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond,
 	if (skb->protocol != __cpu_to_be16(ETH_P_ARP))
 		return RX_HANDLER_ANOTHER;
 
-	read_lock(&bond->lock);
-
 	if (!slave_do_arp_validate(bond, slave))
 		goto out_unlock;
 
@@ -2350,7 +2348,6 @@  int bond_arp_rcv(const struct sk_buff *skb, struct bonding *bond,
 		bond_validate_arp(bond, slave, tip, sip);
 
 out_unlock:
-	read_unlock(&bond->lock);
 	if (arp != (struct arphdr *)skb->data)
 		kfree(arp);
 	return RX_HANDLER_ANOTHER;