diff options
| author | Eric Dumazet <edumazet@google.com> | 2012-06-11 19:23:07 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-06-12 18:51:09 -0700 |
| commit | de063b7040dcd9fbc9a1847fa44f0af13e19d6de (patch) | |
| tree | d828ad11df0863ae1594be4461bfdbcb5388c4a8 /drivers/net/bonding/bond_3ad.c | |
| parent | 072c0559e26bc35700b3a70dffc230f00d9262b8 (diff) | |
| download | linux-de063b7040dcd9fbc9a1847fa44f0af13e19d6de.tar.bz2 | |
bonding: remove packet cloning in recv_probe()
Cloning all packets in input path have a significant cost.
Use skb_header_pointer()/skb_copy_bits() instead of pskb_may_pull() so
that recv_probe handlers (bond_3ad_lacpdu_recv / bond_arp_rcv /
rlb_arp_recv ) dont touch input skb.
bond_handle_frame() can avoid the skb_clone()/dev_kfree_skb()
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jay Vosburgh <fubar@us.ibm.com>
Cc: Andy Gospodarek <andy@greyhouse.net>
Cc: Jiri Bohac <jbohac@suse.cz>
Cc: Nicolas de Pesloüan <nicolas.2p.debian@free.fr>
Cc: Maciej Żenczykowski <maze@google.com>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/bonding/bond_3ad.c')
| -rw-r--r-- | drivers/net/bonding/bond_3ad.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c index 3463b469e657..3031e0413114 100644 --- a/drivers/net/bonding/bond_3ad.c +++ b/drivers/net/bonding/bond_3ad.c @@ -2460,18 +2460,21 @@ out: return NETDEV_TX_OK; } -int bond_3ad_lacpdu_recv(struct sk_buff *skb, struct bonding *bond, - struct slave *slave) +int bond_3ad_lacpdu_recv(const struct sk_buff *skb, struct bonding *bond, + struct slave *slave) { int ret = RX_HANDLER_ANOTHER; + struct lacpdu *lacpdu, _lacpdu; + if (skb->protocol != PKT_TYPE_LACPDU) return ret; - if (!pskb_may_pull(skb, sizeof(struct lacpdu))) + lacpdu = skb_header_pointer(skb, 0, sizeof(_lacpdu), &_lacpdu); + if (!lacpdu) return ret; read_lock(&bond->lock); - ret = bond_3ad_rx_indication((struct lacpdu *) skb->data, slave, skb->len); + ret = bond_3ad_rx_indication(lacpdu, slave, skb->len); read_unlock(&bond->lock); return ret; } |