From 776e7bded918d99f09d03e89b18bbad116ae45f6 Mon Sep 17 00:00:00 2001
From: Shahed Shaikh <shahed.shaikh@qlogic.com>
Date: Fri, 25 Jan 2013 10:20:35 +0000
Subject: [PATCH] qlcnic: enable LRO on IPv6 without dest ip check
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/qlogic/qlcnic/qlcnic.h | 2 ++
.../net/ethernet/qlogic/qlcnic/qlcnic_hw.c | 15 ++++++++++++-
.../net/ethernet/qlogic/qlcnic/qlcnic_io.c | 22 ++++++++++++++-----
.../net/ethernet/qlogic/qlcnic/qlcnic_main.c | 6 +++++
4 files changed, 38 insertions(+), 7 deletions(-)
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
index 86487fb19e70..35f345739753 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
@@ -436,6 +436,7 @@ struct qlcnic_hardware_context {
u16 act_pci_func;
u32 capabilities;
+ u32 capabilities2;
u32 temp;
u32 int_vec_bit;
u32 fw_hal_version;
@@ -798,6 +799,7 @@ struct qlcnic_mac_list_s {
#define QLCNIC_FW_CAPABILITY_MORE_CAPS BIT_31
#define QLCNIC_FW_CAPABILITY_2_LRO_MAX_TCP_SEG BIT_2
+#define QLCNIC_FW_CAP2_HW_LRO_IPV6 BIT_3
#define QLCNIC_FW_CAPABILITY_2_OCBB BIT_5
/* module types */
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c
index 6f5b5eb2c44a..8e0412bdf42d 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c
@@ -687,6 +687,11 @@ void qlcnic_82xx_config_intr_coalesce(struct qlcnic_adapter *adapter)
"Could not send interrupt coalescing parameters\n");
}
+#define QLCNIC_ENABLE_IPV4_LRO 1
+#define QLCNIC_ENABLE_IPV6_LRO 2
+#define QLCNIC_NO_DEST_IPV4_CHECK (1 << 8)
+#define QLCNIC_NO_DEST_IPV6_CHECK (2 << 8)
+
int qlcnic_82xx_config_hw_lro(struct qlcnic_adapter *adapter, int enable)
{
struct qlcnic_nic_req req;
@@ -703,7 +708,15 @@ int qlcnic_82xx_config_hw_lro(struct qlcnic_adapter *adapter, int enable)
word = QLCNIC_H2C_OPCODE_CONFIG_HW_LRO | ((u64)adapter->portnum << 16);
req.req_hdr = cpu_to_le64(word);
- req.words[0] = cpu_to_le64(enable);
+ word = 0;
+ if (enable) {
+ word = QLCNIC_ENABLE_IPV4_LRO | QLCNIC_NO_DEST_IPV4_CHECK;
+ if (adapter->ahw->capabilities2 & QLCNIC_FW_CAP2_HW_LRO_IPV6)
+ word |= QLCNIC_ENABLE_IPV6_LRO |
+ QLCNIC_NO_DEST_IPV6_CHECK;
+ }
+
+ req.words[0] = cpu_to_le64(word);
rv = qlcnic_send_cmd_descs(adapter, (struct cmd_desc_type0 *)&req, 1);
if (rv != 0)
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
index 383ecd20d9b5..0033971b5b2b 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
@@ -973,6 +973,7 @@ qlcnic_process_lro(struct qlcnic_adapter *adapter,
struct sk_buff *skb;
struct qlcnic_host_rds_ring *rds_ring;
struct iphdr *iph;
+ struct ipv6hdr *ipv6h;
struct tcphdr *th;
bool push, timestamp;
int index, l2_hdr_offset, l4_hdr_offset;
@@ -1016,12 +1017,21 @@ qlcnic_process_lro(struct qlcnic_adapter *adapter,
}
skb->protocol = eth_type_trans(skb, netdev);
- iph = (struct iphdr *)skb->data;
- th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
- length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
- iph->tot_len = htons(length);
- iph->check = 0;
- iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
+
+ if (htons(skb->protocol) == ETH_P_IPV6) {
+ ipv6h = (struct ipv6hdr *)skb->data;
+ th = (struct tcphdr *)(skb->data + sizeof(struct ipv6hdr));
+ length = (th->doff << 2) + lro_length;
+ ipv6h->payload_len = htons(length);
+ } else {
+ iph = (struct iphdr *)skb->data;
+ th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
+ length = (iph->ihl << 2) + (th->doff << 2) + lro_length;
+ iph->tot_len = htons(length);
+ iph->check = 0;
+ iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
+ }
+
th->psh = push;
th->seq = htonl(seq_number);
length = skb->len;
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
index 5f3308a1801a..e460401667df 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
@@ -781,6 +781,12 @@ qlcnic_initialize_nic(struct qlcnic_adapter *adapter)
adapter->ahw->max_tx_ques = nic_info.max_tx_ques;
adapter->ahw->max_rx_ques = nic_info.max_rx_ques;
adapter->ahw->capabilities = nic_info.capabilities;
+
+ if (adapter->ahw->capabilities & QLCNIC_FW_CAPABILITY_MORE_CAPS) {
+ u32 temp;
+ temp = QLCRD32(adapter, CRB_FW_CAPABILITIES_2);
+ adapter->ahw->capabilities2 = temp;
+ }
adapter->ahw->max_mac_filters = nic_info.max_mac_filters;
adapter->ahw->max_mtu = nic_info.max_mtu;
--
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