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ixgbe: Implement FCoE Tx side offload features in base driver of 82599

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This patch implements the FCoE Tx side offload features in ixgbe_main.c
to 82599 using the Tx offload infrastructure code added in the previous
patch. This is achieved by the calling the FCoE Sequence Offload (FSO)
function ixgbe_fso() on the transmit path of ixgbe.

This patch also includes an EEPROM check to make sure the NIC we're loading
on is an offload-enabled SKU.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yi Zou
2009-05-13 13:11:06 +00:00
committed by David S. Miller
parent bc079228e7
commit eacd73f79a
5 changed files with 101 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

104
drivers/net/ixgbe/ixgbe_main.c
View File

@@ -39,6 +39,7 @@
#include <net/ip6_checksum.h>
#include <linux/ethtool.h>
#include <linux/if_vlan.h>
#include <scsi/fc/fc_fcoe.h>
#include "ixgbe.h"
#include "ixgbe_common.h"
@@ -1810,6 +1811,11 @@ static void ixgbe_configure_rx(struct ixgbe_adapter *adapter)
/* Decide whether to use packet split mode or not */
adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED;
#ifdef IXGBE_FCOE
if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED;
#endif /* IXGBE_FCOE */
/* Set the RX buffer length according to the mode */
if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
rx_buf_len = IXGBE_RX_HDR_SIZE;
@@ -2241,6 +2247,11 @@ static void ixgbe_configure(struct ixgbe_adapter *adapter)
netif_set_gso_max_size(netdev, 65536);
#endif
#ifdef IXGBE_FCOE
if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
ixgbe_configure_fcoe(adapter);
#endif /* IXGBE_FCOE */
ixgbe_configure_tx(adapter);
ixgbe_configure_rx(adapter);
for (i = 0; i < adapter->num_rx_queues; i++)
@@ -3401,6 +3412,9 @@ static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter)
adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82599;
adapter->flags |= IXGBE_FLAG_RSC_CAPABLE;
adapter->flags |= IXGBE_FLAG_RSC_ENABLED;
#ifdef IXGBE_FCOE
adapter->flags |= IXGBE_FLAG_FCOE_ENABLED;
#endif /* IXGBE_FCOE */
}
#ifdef CONFIG_IXGBE_DCB
@@ -4416,10 +4430,12 @@ static bool ixgbe_tx_csum(struct ixgbe_adapter *adapter,
static int ixgbe_tx_map(struct ixgbe_adapter *adapter,
struct ixgbe_ring *tx_ring,
struct sk_buff *skb, unsigned int first)
struct sk_buff *skb, u32 tx_flags,
unsigned int first)
{
struct ixgbe_tx_buffer *tx_buffer_info;
unsigned int len = skb_headlen(skb);
unsigned int len;
unsigned int total = skb->len;
unsigned int offset = 0, size, count = 0, i;
unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
unsigned int f;
@@ -4434,6 +4450,11 @@ static int ixgbe_tx_map(struct ixgbe_adapter *adapter,
map = skb_shinfo(skb)->dma_maps;
if (tx_flags & IXGBE_TX_FLAGS_FCOE)
/* excluding fcoe_crc_eof for FCoE */
total -= sizeof(struct fcoe_crc_eof);
len = min(skb_headlen(skb), total);
while (len) {
tx_buffer_info = &tx_ring->tx_buffer_info[i];
size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD);
@@ -4444,6 +4465,7 @@ static int ixgbe_tx_map(struct ixgbe_adapter *adapter,
tx_buffer_info->next_to_watch = i;
len -= size;
total -= size;
offset += size;
count++;
@@ -4458,7 +4480,7 @@ static int ixgbe_tx_map(struct ixgbe_adapter *adapter,
struct skb_frag_struct *frag;
frag = &skb_shinfo(skb)->frags[f];
len = frag->size;
len = min((unsigned int)frag->size, total);
offset = 0;
while (len) {
@@ -4475,9 +4497,12 @@ static int ixgbe_tx_map(struct ixgbe_adapter *adapter,
tx_buffer_info->next_to_watch = i;
len -= size;
total -= size;
offset += size;
count++;
}
if (total == 0)
break;
}
tx_ring->tx_buffer_info[i].skb = skb;
@@ -4519,6 +4544,13 @@ static void ixgbe_tx_queue(struct ixgbe_adapter *adapter,
olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
IXGBE_ADVTXD_POPTS_SHIFT;
if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
olinfo_status |= IXGBE_ADVTXD_CC;
olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
if (tx_flags & IXGBE_TX_FLAGS_FSO)
cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE;
}
olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT);
i = tx_ring->next_to_use;
@@ -4615,10 +4647,16 @@ static int ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
tx_flags |= IXGBE_TX_FLAGS_VLAN;
}
/* three things can cause us to need a context descriptor */
if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) &&
(skb->protocol == htons(ETH_P_FCOE)))
tx_flags |= IXGBE_TX_FLAGS_FCOE;
/* four things can cause us to need a context descriptor */
if (skb_is_gso(skb) ||
(skb->ip_summed == CHECKSUM_PARTIAL) ||
(tx_flags & IXGBE_TX_FLAGS_VLAN))
(tx_flags & IXGBE_TX_FLAGS_VLAN) ||
(tx_flags & IXGBE_TX_FLAGS_FCOE))
count++;
count += TXD_USE_COUNT(skb_headlen(skb));
@@ -4630,23 +4668,35 @@ static int ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
return NETDEV_TX_BUSY;
}
if (skb->protocol == htons(ETH_P_IP))
tx_flags |= IXGBE_TX_FLAGS_IPV4;
first = tx_ring->next_to_use;
tso = ixgbe_tso(adapter, tx_ring, skb, tx_flags, &hdr_len);
if (tso < 0) {
dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
#ifdef IXGBE_FCOE
/* setup tx offload for FCoE */
tso = ixgbe_fso(adapter, tx_ring, skb, tx_flags, &hdr_len);
if (tso < 0) {
dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
if (tso)
tx_flags |= IXGBE_TX_FLAGS_FSO;
#endif /* IXGBE_FCOE */
} else {
if (skb->protocol == htons(ETH_P_IP))
tx_flags |= IXGBE_TX_FLAGS_IPV4;
tso = ixgbe_tso(adapter, tx_ring, skb, tx_flags, &hdr_len);
if (tso < 0) {
dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
if (tso)
tx_flags |= IXGBE_TX_FLAGS_TSO;
else if (ixgbe_tx_csum(adapter, tx_ring, skb, tx_flags) &&
(skb->ip_summed == CHECKSUM_PARTIAL))
tx_flags |= IXGBE_TX_FLAGS_CSUM;
}
if (tso)
tx_flags |= IXGBE_TX_FLAGS_TSO;
else if (ixgbe_tx_csum(adapter, tx_ring, skb, tx_flags) &&
(skb->ip_summed == CHECKSUM_PARTIAL))
tx_flags |= IXGBE_TX_FLAGS_CSUM;
count = ixgbe_tx_map(adapter, tx_ring, skb, first);
count = ixgbe_tx_map(adapter, tx_ring, skb, tx_flags, first);
if (count) {
ixgbe_tx_queue(adapter, tx_ring, tx_flags, count, skb->len,
hdr_len);
@@ -4794,6 +4844,9 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data];
static int cards_found;
int i, err, pci_using_dac;
#ifdef IXGBE_FCOE
u16 device_caps;
#endif
u32 part_num, eec;
err = pci_enable_device_mem(pdev);
@@ -4976,6 +5029,19 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
netdev->dcbnl_ops = &dcbnl_ops;
#endif
#ifdef IXGBE_FCOE
if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
if (hw->mac.ops.get_device_caps) {
hw->mac.ops.get_device_caps(hw, &device_caps);
if (!(device_caps & IXGBE_DEVICE_CAPS_FCOE_OFFLOADS)) {
netdev->features |= NETIF_F_FCOE_CRC;
netdev->features |= NETIF_F_FSO;
} else {
adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
}
}
}
#endif /* IXGBE_FCOE */
if (pci_using_dac)
netdev->features |= NETIF_F_HIGHDMA;