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authorJay Vosburgh <fubar@us.ibm.com>2008-11-03 18:16:50 -0800
committerDavid S. Miller <davem@davemloft.net>2008-11-03 18:16:50 -0800
commit6cf3f41e6c08bca6641a695449791c38a25f35ff (patch)
treea4e173960afe6712c112b3ddea1f229a695b7089 /include
parent24f8b2385e03a4f4c8dac513d03b5eaa475822b9 (diff)
bonding, net: Move last_rx update into bonding recv logic
The only user of the net_device->last_rx field is bonding. This patch adds a conditional update of last_rx to the bonding special logic in skb_bond_should_drop, causing last_rx to only be updated when the ARP monitor is running. This frees network device drivers from the necessity of updating last_rx, which can have cache line thrash issues. Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/if.h1
-rw-r--r--include/linux/netdevice.h32
2 files changed, 19 insertions, 14 deletions
diff --git a/include/linux/if.h b/include/linux/if.h
index 65246846c84..2a6e29620a9 100644
--- a/include/linux/if.h
+++ b/include/linux/if.h
@@ -65,6 +65,7 @@
#define IFF_BONDING 0x20 /* bonding master or slave */
#define IFF_SLAVE_NEEDARP 0x40 /* need ARPs for validation */
#define IFF_ISATAP 0x80 /* ISATAP interface (RFC4214) */
+#define IFF_MASTER_ARPMON 0x100 /* bonding master, ARP mon in use */
#define IF_GET_IFACE 0x0001 /* for querying only */
#define IF_GET_PROTO 0x0002
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 9d77b1d7dca..f1b0dbe5846 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1742,22 +1742,26 @@ static inline int skb_bond_should_drop(struct sk_buff *skb)
struct net_device *dev = skb->dev;
struct net_device *master = dev->master;
- if (master &&
- (dev->priv_flags & IFF_SLAVE_INACTIVE)) {
- if ((dev->priv_flags & IFF_SLAVE_NEEDARP) &&
- skb->protocol == __constant_htons(ETH_P_ARP))
- return 0;
-
- if (master->priv_flags & IFF_MASTER_ALB) {
- if (skb->pkt_type != PACKET_BROADCAST &&
- skb->pkt_type != PACKET_MULTICAST)
+ if (master) {
+ if (master->priv_flags & IFF_MASTER_ARPMON)
+ dev->last_rx = jiffies;
+
+ if (dev->priv_flags & IFF_SLAVE_INACTIVE) {
+ if ((dev->priv_flags & IFF_SLAVE_NEEDARP) &&
+ skb->protocol == __constant_htons(ETH_P_ARP))
return 0;
- }
- if (master->priv_flags & IFF_MASTER_8023AD &&
- skb->protocol == __constant_htons(ETH_P_SLOW))
- return 0;
- return 1;
+ if (master->priv_flags & IFF_MASTER_ALB) {
+ if (skb->pkt_type != PACKET_BROADCAST &&
+ skb->pkt_type != PACKET_MULTICAST)
+ return 0;
+ }
+ if (master->priv_flags & IFF_MASTER_8023AD &&
+ skb->protocol == __constant_htons(ETH_P_SLOW))
+ return 0;
+
+ return 1;
+ }
}
return 0;
}