diff options
| author | Shahed Shaikh <shahed.shaikh@qlogic.com> | 2013-02-18 12:06:16 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-02-19 00:47:01 -0500 |
| commit | 99e8587900a3d32b1eaa3a92da90b49e9d4ff765 (patch) | |
| tree | 299bad8dae01ef115cf5e6a9dd3f08d65f1ca449 /drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c | |
| parent | ac166700991c8f2760e4d3656b4783986cfbf545 (diff) | |
| download | lwn-99e8587900a3d32b1eaa3a92da90b49e9d4ff765.tar.gz lwn-99e8587900a3d32b1eaa3a92da90b49e9d4ff765.zip | |
qlcnic: fix estimation of receive MSS in case of LRO for 83xx adapter
Set gso_size to MSS obtained from adapter to avoid incorrect estimation
of receive MSS, which would lead to delayed ACKs in some traffic patterns
Example:
Send two or three packets and wait for ack and only then send
remaining packets.
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c')
| -rw-r--r-- | drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c index 662292de1486..2990f45df787 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c @@ -88,6 +88,8 @@ #define qlcnic_get_lro_sts_mss(sts_data1) \ ((sts_data1 >> 32) & 0x0FFFF) +#define qlcnic_83xx_get_lro_sts_mss(sts) ((sts) & 0xffff) + /* opcode field in status_desc */ #define QLCNIC_SYN_OFFLOAD 0x03 #define QLCNIC_RXPKT_DESC 0x04 @@ -1423,7 +1425,7 @@ qlcnic_83xx_process_lro(struct qlcnic_adapter *adapter, bool push; int l2_hdr_offset, l4_hdr_offset; int index; - u16 lro_length, length, data_offset; + u16 lro_length, length, data_offset, gso_size; u16 vid = 0xffff; if (unlikely(ring > adapter->max_rds_rings)) @@ -1478,6 +1480,15 @@ qlcnic_83xx_process_lro(struct qlcnic_adapter *adapter, th->psh = push; length = skb->len; + if (adapter->flags & QLCNIC_FW_LRO_MSS_CAP) { + gso_size = qlcnic_83xx_get_lro_sts_mss(sts_data[0]); + skb_shinfo(skb)->gso_size = gso_size; + if (skb->protocol == htons(ETH_P_IPV6)) + skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6; + else + skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4; + } + if (vid != 0xffff) __vlan_hwaccel_put_tag(skb, vid); |