ixgbe: Implement FCoE Tx side offload features in base driver of 82599
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>
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@ -37,3 +37,5 @@ ixgbe-objs := ixgbe_main.o ixgbe_common.o ixgbe_ethtool.o \
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ixgbe-$(CONFIG_IXGBE_DCB) += ixgbe_dcb.o ixgbe_dcb_82598.o \
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ixgbe_dcb_82599.o ixgbe_dcb_nl.o
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ixgbe-$(CONFIG_FCOE:m=y) += ixgbe_fcoe.o
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@ -36,6 +36,10 @@
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#include "ixgbe_type.h"
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#include "ixgbe_common.h"
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#include "ixgbe_dcb.h"
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#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
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#define IXGBE_FCOE
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#include "ixgbe_fcoe.h"
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#endif /* CONFIG_FCOE or CONFIG_FCOE_MODULE */
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#ifdef CONFIG_IXGBE_DCA
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#include <linux/dca.h>
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#endif
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@ -84,6 +88,8 @@
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#define IXGBE_TX_FLAGS_VLAN (u32)(1 << 1)
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#define IXGBE_TX_FLAGS_TSO (u32)(1 << 2)
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#define IXGBE_TX_FLAGS_IPV4 (u32)(1 << 3)
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#define IXGBE_TX_FLAGS_FCOE (u32)(1 << 4)
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#define IXGBE_TX_FLAGS_FSO (u32)(1 << 5)
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#define IXGBE_TX_FLAGS_VLAN_MASK 0xffff0000
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#define IXGBE_TX_FLAGS_VLAN_PRIO_MASK 0x0000e000
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#define IXGBE_TX_FLAGS_VLAN_SHIFT 16
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@ -298,6 +304,7 @@ struct ixgbe_adapter {
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#define IXGBE_FLAG_IN_SFP_MOD_TASK (u32)(1 << 25)
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#define IXGBE_FLAG_RSC_CAPABLE (u32)(1 << 26)
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#define IXGBE_FLAG_RSC_ENABLED (u32)(1 << 27)
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#define IXGBE_FLAG_FCOE_ENABLED (u32)(1 << 29)
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/* default to trying for four seconds */
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#define IXGBE_TRY_LINK_TIMEOUT (4 * HZ)
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@ -371,5 +378,11 @@ extern void ixgbe_update_stats(struct ixgbe_adapter *adapter);
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extern int ixgbe_init_interrupt_scheme(struct ixgbe_adapter *adapter);
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extern void ixgbe_clear_interrupt_scheme(struct ixgbe_adapter *adapter);
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extern void ixgbe_write_eitr(struct ixgbe_adapter *, int, u32);
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#ifdef IXGBE_FCOE
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extern void ixgbe_configure_fcoe(struct ixgbe_adapter *adapter);
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extern int ixgbe_fso(struct ixgbe_adapter *adapter,
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struct ixgbe_ring *tx_ring, struct sk_buff *skb,
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u32 tx_flags, u8 *hdr_len);
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#endif /* IXGBE_FCOE */
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#endif /* _IXGBE_H_ */
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@ -1294,7 +1294,6 @@ s32 ixgbe_get_device_caps_82599(struct ixgbe_hw *hw, u16 *device_caps)
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return 0;
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}
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static struct ixgbe_mac_operations mac_ops_82599 = {
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.init_hw = &ixgbe_init_hw_generic,
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.reset_hw = &ixgbe_reset_hw_82599,
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@ -39,6 +39,7 @@
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#include <net/ip6_checksum.h>
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#include <linux/ethtool.h>
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#include <linux/if_vlan.h>
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#include <scsi/fc/fc_fcoe.h>
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#include "ixgbe.h"
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#include "ixgbe_common.h"
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@ -1810,6 +1811,11 @@ static void ixgbe_configure_rx(struct ixgbe_adapter *adapter)
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/* Decide whether to use packet split mode or not */
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adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED;
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#ifdef IXGBE_FCOE
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if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
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adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED;
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#endif /* IXGBE_FCOE */
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/* Set the RX buffer length according to the mode */
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if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {
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rx_buf_len = IXGBE_RX_HDR_SIZE;
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@ -2241,6 +2247,11 @@ static void ixgbe_configure(struct ixgbe_adapter *adapter)
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netif_set_gso_max_size(netdev, 65536);
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#endif
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#ifdef IXGBE_FCOE
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if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)
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ixgbe_configure_fcoe(adapter);
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#endif /* IXGBE_FCOE */
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ixgbe_configure_tx(adapter);
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ixgbe_configure_rx(adapter);
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for (i = 0; i < adapter->num_rx_queues; i++)
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@ -3401,6 +3412,9 @@ static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter)
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adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82599;
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adapter->flags |= IXGBE_FLAG_RSC_CAPABLE;
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adapter->flags |= IXGBE_FLAG_RSC_ENABLED;
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#ifdef IXGBE_FCOE
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adapter->flags |= IXGBE_FLAG_FCOE_ENABLED;
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#endif /* IXGBE_FCOE */
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}
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#ifdef CONFIG_IXGBE_DCB
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@ -4416,10 +4430,12 @@ static bool ixgbe_tx_csum(struct ixgbe_adapter *adapter,
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static int ixgbe_tx_map(struct ixgbe_adapter *adapter,
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struct ixgbe_ring *tx_ring,
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struct sk_buff *skb, unsigned int first)
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struct sk_buff *skb, u32 tx_flags,
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unsigned int first)
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{
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struct ixgbe_tx_buffer *tx_buffer_info;
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unsigned int len = skb_headlen(skb);
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unsigned int len;
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unsigned int total = skb->len;
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unsigned int offset = 0, size, count = 0, i;
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unsigned int nr_frags = skb_shinfo(skb)->nr_frags;
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unsigned int f;
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@ -4434,6 +4450,11 @@ static int ixgbe_tx_map(struct ixgbe_adapter *adapter,
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map = skb_shinfo(skb)->dma_maps;
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if (tx_flags & IXGBE_TX_FLAGS_FCOE)
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/* excluding fcoe_crc_eof for FCoE */
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total -= sizeof(struct fcoe_crc_eof);
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len = min(skb_headlen(skb), total);
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while (len) {
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tx_buffer_info = &tx_ring->tx_buffer_info[i];
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size = min(len, (uint)IXGBE_MAX_DATA_PER_TXD);
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@ -4444,6 +4465,7 @@ static int ixgbe_tx_map(struct ixgbe_adapter *adapter,
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tx_buffer_info->next_to_watch = i;
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len -= size;
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total -= size;
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offset += size;
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count++;
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@ -4458,7 +4480,7 @@ static int ixgbe_tx_map(struct ixgbe_adapter *adapter,
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struct skb_frag_struct *frag;
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frag = &skb_shinfo(skb)->frags[f];
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len = frag->size;
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len = min((unsigned int)frag->size, total);
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offset = 0;
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while (len) {
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@ -4475,9 +4497,12 @@ static int ixgbe_tx_map(struct ixgbe_adapter *adapter,
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tx_buffer_info->next_to_watch = i;
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len -= size;
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total -= size;
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offset += size;
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count++;
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}
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if (total == 0)
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break;
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}
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tx_ring->tx_buffer_info[i].skb = skb;
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@ -4519,6 +4544,13 @@ static void ixgbe_tx_queue(struct ixgbe_adapter *adapter,
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olinfo_status |= IXGBE_TXD_POPTS_TXSM <<
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IXGBE_ADVTXD_POPTS_SHIFT;
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if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
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olinfo_status |= IXGBE_ADVTXD_CC;
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olinfo_status |= (1 << IXGBE_ADVTXD_IDX_SHIFT);
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if (tx_flags & IXGBE_TX_FLAGS_FSO)
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cmd_type_len |= IXGBE_ADVTXD_DCMD_TSE;
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}
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olinfo_status |= ((paylen - hdr_len) << IXGBE_ADVTXD_PAYLEN_SHIFT);
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i = tx_ring->next_to_use;
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@ -4615,10 +4647,16 @@ static int ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
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tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
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tx_flags |= IXGBE_TX_FLAGS_VLAN;
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}
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/* three things can cause us to need a context descriptor */
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if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) &&
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(skb->protocol == htons(ETH_P_FCOE)))
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tx_flags |= IXGBE_TX_FLAGS_FCOE;
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/* four things can cause us to need a context descriptor */
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if (skb_is_gso(skb) ||
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(skb->ip_summed == CHECKSUM_PARTIAL) ||
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(tx_flags & IXGBE_TX_FLAGS_VLAN))
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(tx_flags & IXGBE_TX_FLAGS_VLAN) ||
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(tx_flags & IXGBE_TX_FLAGS_FCOE))
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count++;
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count += TXD_USE_COUNT(skb_headlen(skb));
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@ -4630,23 +4668,35 @@ static int ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
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return NETDEV_TX_BUSY;
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}
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if (skb->protocol == htons(ETH_P_IP))
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tx_flags |= IXGBE_TX_FLAGS_IPV4;
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first = tx_ring->next_to_use;
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tso = ixgbe_tso(adapter, tx_ring, skb, tx_flags, &hdr_len);
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if (tso < 0) {
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dev_kfree_skb_any(skb);
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return NETDEV_TX_OK;
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if (tx_flags & IXGBE_TX_FLAGS_FCOE) {
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#ifdef IXGBE_FCOE
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/* setup tx offload for FCoE */
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tso = ixgbe_fso(adapter, tx_ring, skb, tx_flags, &hdr_len);
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if (tso < 0) {
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dev_kfree_skb_any(skb);
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return NETDEV_TX_OK;
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}
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if (tso)
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tx_flags |= IXGBE_TX_FLAGS_FSO;
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#endif /* IXGBE_FCOE */
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} else {
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if (skb->protocol == htons(ETH_P_IP))
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tx_flags |= IXGBE_TX_FLAGS_IPV4;
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tso = ixgbe_tso(adapter, tx_ring, skb, tx_flags, &hdr_len);
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if (tso < 0) {
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dev_kfree_skb_any(skb);
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return NETDEV_TX_OK;
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}
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if (tso)
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tx_flags |= IXGBE_TX_FLAGS_TSO;
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else if (ixgbe_tx_csum(adapter, tx_ring, skb, tx_flags) &&
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(skb->ip_summed == CHECKSUM_PARTIAL))
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tx_flags |= IXGBE_TX_FLAGS_CSUM;
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}
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if (tso)
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tx_flags |= IXGBE_TX_FLAGS_TSO;
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else if (ixgbe_tx_csum(adapter, tx_ring, skb, tx_flags) &&
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(skb->ip_summed == CHECKSUM_PARTIAL))
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tx_flags |= IXGBE_TX_FLAGS_CSUM;
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count = ixgbe_tx_map(adapter, tx_ring, skb, first);
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count = ixgbe_tx_map(adapter, tx_ring, skb, tx_flags, first);
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if (count) {
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ixgbe_tx_queue(adapter, tx_ring, tx_flags, count, skb->len,
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hdr_len);
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@ -4794,6 +4844,9 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
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const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data];
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static int cards_found;
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int i, err, pci_using_dac;
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#ifdef IXGBE_FCOE
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u16 device_caps;
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#endif
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u32 part_num, eec;
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err = pci_enable_device_mem(pdev);
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@ -4976,6 +5029,19 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
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netdev->dcbnl_ops = &dcbnl_ops;
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#endif
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#ifdef IXGBE_FCOE
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if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
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if (hw->mac.ops.get_device_caps) {
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hw->mac.ops.get_device_caps(hw, &device_caps);
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if (!(device_caps & IXGBE_DEVICE_CAPS_FCOE_OFFLOADS)) {
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netdev->features |= NETIF_F_FCOE_CRC;
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netdev->features |= NETIF_F_FSO;
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} else {
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adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
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}
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}
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}
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#endif /* IXGBE_FCOE */
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if (pci_using_dac)
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netdev->features |= NETIF_F_HIGHDMA;
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@ -1483,6 +1483,7 @@
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#endif
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#define IXGBE_DEVICE_CAPS_ALLOW_ANY_SFP 0x1
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#define IXGBE_DEVICE_CAPS_FCOE_OFFLOADS 0x2
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/* PCI Bus Info */
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#define IXGBE_PCI_LINK_STATUS 0xB2
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