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path: root/drivers/net/bnx2x/bnx2x_cmn.c
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Diffstat (limited to 'drivers/net/bnx2x/bnx2x_cmn.c')
-rw-r--r--drivers/net/bnx2x/bnx2x_cmn.c370
1 files changed, 271 insertions, 99 deletions
diff --git a/drivers/net/bnx2x/bnx2x_cmn.c b/drivers/net/bnx2x/bnx2x_cmn.c
index 8763625b09d0..e5fac6244f4a 100644
--- a/drivers/net/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/bnx2x/bnx2x_cmn.c
@@ -47,6 +47,25 @@ static inline void bnx2x_bz_fp(struct bnx2x *bp, int index)
/* Restore the NAPI object as it has been already initialized */
fp->napi = orig_napi;
+
+ fp->bp = bp;
+ fp->index = index;
+ if (IS_ETH_FP(fp))
+ fp->max_cos = bp->max_cos;
+ else
+ /* Special queues support only one CoS */
+ fp->max_cos = 1;
+
+ /*
+ * set the tpa flag for each queue. The tpa flag determines the queue
+ * minimal size so it must be set prior to queue memory allocation
+ */
+ fp->disable_tpa = ((bp->flags & TPA_ENABLE_FLAG) == 0);
+
+#ifdef BCM_CNIC
+ /* We don't want TPA on FCoE, FWD and OOO L2 rings */
+ bnx2x_fcoe(bp, disable_tpa) = 1;
+#endif
}
/**
@@ -77,10 +96,10 @@ int load_count[2][3] = { {0} }; /* per-path: 0-common, 1-port0, 2-port1 */
/* free skb in the packet ring at pos idx
* return idx of last bd freed
*/
-static u16 bnx2x_free_tx_pkt(struct bnx2x *bp, struct bnx2x_fastpath *fp,
+static u16 bnx2x_free_tx_pkt(struct bnx2x *bp, struct bnx2x_fp_txdata *txdata,
u16 idx)
{
- struct sw_tx_bd *tx_buf = &fp->tx_buf_ring[idx];
+ struct sw_tx_bd *tx_buf = &txdata->tx_buf_ring[idx];
struct eth_tx_start_bd *tx_start_bd;
struct eth_tx_bd *tx_data_bd;
struct sk_buff *skb = tx_buf->skb;
@@ -91,11 +110,11 @@ static u16 bnx2x_free_tx_pkt(struct bnx2x *bp, struct bnx2x_fastpath *fp,
prefetch(&skb->end);
DP(BNX2X_MSG_FP, "fp[%d]: pkt_idx %d buff @(%p)->skb %p\n",
- fp->index, idx, tx_buf, skb);
+ txdata->txq_index, idx, tx_buf, skb);
/* unmap first bd */
DP(BNX2X_MSG_OFF, "free bd_idx %d\n", bd_idx);
- tx_start_bd = &fp->tx_desc_ring[bd_idx].start_bd;
+ tx_start_bd = &txdata->tx_desc_ring[bd_idx].start_bd;
dma_unmap_single(&bp->pdev->dev, BD_UNMAP_ADDR(tx_start_bd),
BD_UNMAP_LEN(tx_start_bd), DMA_TO_DEVICE);
@@ -126,7 +145,7 @@ static u16 bnx2x_free_tx_pkt(struct bnx2x *bp, struct bnx2x_fastpath *fp,
while (nbd > 0) {
DP(BNX2X_MSG_OFF, "free frag bd_idx %d\n", bd_idx);
- tx_data_bd = &fp->tx_desc_ring[bd_idx].reg_bd;
+ tx_data_bd = &txdata->tx_desc_ring[bd_idx].reg_bd;
dma_unmap_page(&bp->pdev->dev, BD_UNMAP_ADDR(tx_data_bd),
BD_UNMAP_LEN(tx_data_bd), DMA_TO_DEVICE);
if (--nbd)
@@ -142,20 +161,19 @@ static u16 bnx2x_free_tx_pkt(struct bnx2x *bp, struct bnx2x_fastpath *fp,
return new_cons;
}
-int bnx2x_tx_int(struct bnx2x_fastpath *fp)
+int bnx2x_tx_int(struct bnx2x *bp, struct bnx2x_fp_txdata *txdata)
{
- struct bnx2x *bp = fp->bp;
struct netdev_queue *txq;
- u16 hw_cons, sw_cons, bd_cons = fp->tx_bd_cons;
+ u16 hw_cons, sw_cons, bd_cons = txdata->tx_bd_cons;
#ifdef BNX2X_STOP_ON_ERROR
if (unlikely(bp->panic))
return -1;
#endif
- txq = netdev_get_tx_queue(bp->dev, fp->index);
- hw_cons = le16_to_cpu(*fp->tx_cons_sb);
- sw_cons = fp->tx_pkt_cons;
+ txq = netdev_get_tx_queue(bp->dev, txdata->txq_index);
+ hw_cons = le16_to_cpu(*txdata->tx_cons_sb);
+ sw_cons = txdata->tx_pkt_cons;
while (sw_cons != hw_cons) {
u16 pkt_cons;
@@ -164,14 +182,14 @@ int bnx2x_tx_int(struct bnx2x_fastpath *fp)
DP(NETIF_MSG_TX_DONE, "queue[%d]: hw_cons %u sw_cons %u "
" pkt_cons %u\n",
- fp->index, hw_cons, sw_cons, pkt_cons);
+ txdata->txq_index, hw_cons, sw_cons, pkt_cons);
- bd_cons = bnx2x_free_tx_pkt(bp, fp, pkt_cons);
+ bd_cons = bnx2x_free_tx_pkt(bp, txdata, pkt_cons);
sw_cons++;
}
- fp->tx_pkt_cons = sw_cons;
- fp->tx_bd_cons = bd_cons;
+ txdata->tx_pkt_cons = sw_cons;
+ txdata->tx_bd_cons = bd_cons;
/* Need to make the tx_bd_cons update visible to start_xmit()
* before checking for netif_tx_queue_stopped(). Without the
@@ -199,7 +217,7 @@ int bnx2x_tx_int(struct bnx2x_fastpath *fp)
if ((netif_tx_queue_stopped(txq)) &&
(bp->state == BNX2X_STATE_OPEN) &&
- (bnx2x_tx_avail(fp) >= MAX_SKB_FRAGS + 3))
+ (bnx2x_tx_avail(bp, txdata) >= MAX_SKB_FRAGS + 3))
netif_tx_wake_queue(txq);
__netif_tx_unlock(txq);
@@ -777,6 +795,7 @@ static irqreturn_t bnx2x_msix_fp_int(int irq, void *fp_cookie)
{
struct bnx2x_fastpath *fp = fp_cookie;
struct bnx2x *bp = fp->bp;
+ u8 cos;
DP(BNX2X_MSG_FP, "got an MSI-X interrupt on IDX:SB "
"[fp %d fw_sd %d igusb %d]\n",
@@ -790,7 +809,10 @@ static irqreturn_t bnx2x_msix_fp_int(int irq, void *fp_cookie)
/* Handle Rx and Tx according to MSI-X vector */
prefetch(fp->rx_cons_sb);
- prefetch(fp->tx_cons_sb);
+
+ for_each_cos_in_tx_queue(fp, cos)
+ prefetch(fp->txdata[cos].tx_cons_sb);
+
prefetch(&fp->sb_running_index[SM_RX_ID]);
napi_schedule(&bnx2x_fp(bp, fp->index, napi));
@@ -1060,17 +1082,22 @@ void bnx2x_init_rx_rings(struct bnx2x *bp)
static void bnx2x_free_tx_skbs(struct bnx2x *bp)
{
int i;
+ u8 cos;
for_each_tx_queue(bp, i) {
struct bnx2x_fastpath *fp = &bp->fp[i];
+ for_each_cos_in_tx_queue(fp, cos) {
+ struct bnx2x_fp_txdata *txdata = &fp->txdata[cos];
- u16 bd_cons = fp->tx_bd_cons;
- u16 sw_prod = fp->tx_pkt_prod;
- u16 sw_cons = fp->tx_pkt_cons;
+ u16 bd_cons = txdata->tx_bd_cons;
+ u16 sw_prod = txdata->tx_pkt_prod;
+ u16 sw_cons = txdata->tx_pkt_cons;
- while (sw_cons != sw_prod) {
- bd_cons = bnx2x_free_tx_pkt(bp, fp, TX_BD(sw_cons));
- sw_cons++;
+ while (sw_cons != sw_prod) {
+ bd_cons = bnx2x_free_tx_pkt(bp, txdata,
+ TX_BD(sw_cons));
+ sw_cons++;
+ }
}
}
}
@@ -1174,7 +1201,7 @@ void bnx2x_free_irq(struct bnx2x *bp)
{
if (bp->flags & USING_MSIX_FLAG)
bnx2x_free_msix_irqs(bp, BNX2X_NUM_ETH_QUEUES(bp) +
- CNIC_CONTEXT_USE + 1);
+ CNIC_PRESENT + 1);
else if (bp->flags & USING_MSI_FLAG)
free_irq(bp->pdev->irq, bp->dev);
else
@@ -1196,6 +1223,7 @@ int bnx2x_enable_msix(struct bnx2x *bp)
bp->msix_table[msix_vec].entry, bp->msix_table[msix_vec].entry);
msix_vec++;
#endif
+ /* We need separate vectors for ETH queues only (not FCoE) */
for_each_eth_queue(bp, i) {
bp->msix_table[msix_vec].entry = msix_vec;
DP(NETIF_MSG_IFUP, "msix_table[%d].entry = %d "
@@ -1203,7 +1231,7 @@ int bnx2x_enable_msix(struct bnx2x *bp)
msix_vec++;
}
- req_cnt = BNX2X_NUM_ETH_QUEUES(bp) + CNIC_CONTEXT_USE + 1;
+ req_cnt = BNX2X_NUM_ETH_QUEUES(bp) + CNIC_PRESENT + 1;
rc = pci_enable_msix(bp->pdev, &bp->msix_table[0], req_cnt);
@@ -1278,7 +1306,7 @@ static int bnx2x_req_msix_irqs(struct bnx2x *bp)
}
i = BNX2X_NUM_ETH_QUEUES(bp);
- offset = 1 + CNIC_CONTEXT_USE;
+ offset = 1 + CNIC_PRESENT;
netdev_info(bp->dev, "using MSI-X IRQs: sp %d fp[%d] %d"
" ... fp[%d] %d\n",
bp->msix_table[0].vector,
@@ -1393,13 +1421,12 @@ u16 bnx2x_select_queue(struct net_device *dev, struct sk_buff *skb)
/* If ethertype is FCoE or FIP - use FCoE ring */
if ((ether_type == ETH_P_FCOE) || (ether_type == ETH_P_FIP))
- return bnx2x_fcoe(bp, index);
+ return bnx2x_fcoe_tx(bp, txq_index);
}
#endif
/* Select a none-FCoE queue: if FCoE is enabled, exclude FCoE L2 ring
*/
- return __skb_tx_hash(dev, skb,
- dev->real_num_tx_queues - FCOE_CONTEXT_USE);
+ return __skb_tx_hash(dev, skb, BNX2X_NUM_ETH_QUEUES(bp));
}
void bnx2x_set_num_queues(struct bnx2x *bp)
@@ -1418,20 +1445,38 @@ void bnx2x_set_num_queues(struct bnx2x *bp)
}
/* Add special queues */
- bp->num_queues += NONE_ETH_CONTEXT_USE;
+ bp->num_queues += NON_ETH_CONTEXT_USE;
}
static inline int bnx2x_set_real_num_queues(struct bnx2x *bp)
{
- int rc, num = bp->num_queues;
+ int rc, tx, rx;
-#ifdef BCM_CNIC
- if (NO_FCOE(bp))
- num -= FCOE_CONTEXT_USE;
+ tx = MAX_TXQS_PER_COS * bp->max_cos;
+ rx = BNX2X_NUM_ETH_QUEUES(bp);
+/* account for fcoe queue */
+#ifdef BCM_CNIC
+ if (!NO_FCOE(bp)) {
+ rx += FCOE_PRESENT;
+ tx += FCOE_PRESENT;
+ }
#endif
- netif_set_real_num_tx_queues(bp->dev, num);
- rc = netif_set_real_num_rx_queues(bp->dev, num);
+
+ rc = netif_set_real_num_tx_queues(bp->dev, tx);
+ if (rc) {
+ BNX2X_ERR("Failed to set real number of Tx queues: %d\n", rc);
+ return rc;
+ }
+ rc = netif_set_real_num_rx_queues(bp->dev, rx);
+ if (rc) {
+ BNX2X_ERR("Failed to set real number of Rx queues: %d\n", rc);
+ return rc;
+ }
+
+ DP(NETIF_MSG_DRV, "Setting real num queues to (tx, rx) (%d, %d)\n",
+ tx, rx);
+
return rc;
}
@@ -1661,28 +1706,18 @@ int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
/* must be called before memory allocation and HW init */
bnx2x_ilt_set_info(bp);
- /* zero fastpath structures preserving invariants like napi which are
- * allocated only once
+ /*
+ * Zero fastpath structures preserving invariants like napi, which are
+ * allocated only once, fp index, max_cos, bp pointer.
+ * Also set fp->disable_tpa.
*/
for_each_queue(bp, i)
bnx2x_bz_fp(bp, i);
+
/* Set the receive queues buffer size */
bnx2x_set_rx_buf_size(bp);
- /*
- * set the tpa flag for each queue. The tpa flag determines the queue
- * minimal size so it must be set prior to queue memory allocation
- */
- for_each_queue(bp, i)
- bnx2x_fp(bp, i, disable_tpa) =
- ((bp->flags & TPA_ENABLE_FLAG) == 0);
-
-#ifdef BCM_CNIC
- /* We don't want TPA on FCoE L2 ring */
- bnx2x_fcoe(bp, disable_tpa) = 1;
-#endif
-
if (bnx2x_alloc_mem(bp))
return -ENOMEM;
@@ -1696,6 +1731,12 @@ int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
LOAD_ERROR_EXIT(bp, load_error0);
}
+ /* configure multi cos mappings in kernel.
+ * this configuration may be overriden by a multi class queue discipline
+ * or by a dcbx negotiation result.
+ */
+ bnx2x_setup_tc(bp->dev, bp->max_cos);
+
bnx2x_napi_enable(bp);
/* Send LOAD_REQUEST command to MCP
@@ -1747,6 +1788,7 @@ int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
queue_delayed_work(bnx2x_wq, &bp->period_task, 0);
} else
bp->port.pmf = 0;
+
DP(NETIF_MSG_LINK, "pmf %d\n", bp->port.pmf);
/* Init Function state controlling object */
@@ -2089,6 +2131,7 @@ int bnx2x_set_power_state(struct bnx2x *bp, pci_power_t state)
int bnx2x_poll(struct napi_struct *napi, int budget)
{
int work_done = 0;
+ u8 cos;
struct bnx2x_fastpath *fp = container_of(napi, struct bnx2x_fastpath,
napi);
struct bnx2x *bp = fp->bp;
@@ -2101,8 +2144,10 @@ int bnx2x_poll(struct napi_struct *napi, int budget)
}
#endif
- if (bnx2x_has_tx_work(fp))
- bnx2x_tx_int(fp);
+ for_each_cos_in_tx_queue(fp, cos)
+ if (bnx2x_tx_queue_has_work(&fp->txdata[cos]))
+ bnx2x_tx_int(bp, &fp->txdata[cos]);
+
if (bnx2x_has_rx_work(fp)) {
work_done += bnx2x_rx_int(fp, budget - work_done);
@@ -2164,7 +2209,7 @@ int bnx2x_poll(struct napi_struct *napi, int budget)
* in Other Operating Systems(TM)
*/
static noinline u16 bnx2x_tx_split(struct bnx2x *bp,
- struct bnx2x_fastpath *fp,
+ struct bnx2x_fp_txdata *txdata,
struct sw_tx_bd *tx_buf,
struct eth_tx_start_bd **tx_bd, u16 hlen,
u16 bd_prod, int nbd)
@@ -2185,7 +2230,7 @@ static noinline u16 bnx2x_tx_split(struct bnx2x *bp,
/* now get a new data BD
* (after the pbd) and fill it */
bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
- d_tx_bd = &fp->tx_desc_ring[bd_prod].reg_bd;
+ d_tx_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
mapping = HILO_U64(le32_to_cpu(h_tx_bd->addr_hi),
le32_to_cpu(h_tx_bd->addr_lo)) + hlen;
@@ -2481,8 +2526,10 @@ static inline u8 bnx2x_set_pbd_csum(struct bnx2x *bp, struct sk_buff *skb,
netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct bnx2x *bp = netdev_priv(dev);
+
struct bnx2x_fastpath *fp;
struct netdev_queue *txq;
+ struct bnx2x_fp_txdata *txdata;
struct sw_tx_bd *tx_buf;
struct eth_tx_start_bd *tx_start_bd, *first_bd;
struct eth_tx_bd *tx_data_bd, *total_pkt_bd = NULL;
@@ -2490,7 +2537,7 @@ netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
struct eth_tx_parse_bd_e2 *pbd_e2 = NULL;
u32 pbd_e2_parsing_data = 0;
u16 pkt_prod, bd_prod;
- int nbd, fp_index;
+ int nbd, txq_index, fp_index, txdata_index;
dma_addr_t mapping;
u32 xmit_type = bnx2x_xmit_type(bp, skb);
int i;
@@ -2504,12 +2551,43 @@ netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
return NETDEV_TX_BUSY;
#endif
- fp_index = skb_get_queue_mapping(skb);
- txq = netdev_get_tx_queue(dev, fp_index);
+ txq_index = skb_get_queue_mapping(skb);
+ txq = netdev_get_tx_queue(dev, txq_index);
+
+ BUG_ON(txq_index >= MAX_ETH_TXQ_IDX(bp) + FCOE_PRESENT);
+
+ /* decode the fastpath index and the cos index from the txq */
+ fp_index = TXQ_TO_FP(txq_index);
+ txdata_index = TXQ_TO_COS(txq_index);
+
+#ifdef BCM_CNIC
+ /*
+ * Override the above for the FCoE queue:
+ * - FCoE fp entry is right after the ETH entries.
+ * - FCoE L2 queue uses bp->txdata[0] only.
+ */
+ if (unlikely(!NO_FCOE(bp) && (txq_index ==
+ bnx2x_fcoe_tx(bp, txq_index)))) {
+ fp_index = FCOE_IDX;
+ txdata_index = 0;
+ }
+#endif
+
+ /* enable this debug print to view the transmission queue being used
+ DP(BNX2X_MSG_FP, "indices: txq %d, fp %d, txdata %d",
+ txq_index, fp_index, txdata_index); */
+ /* locate the fastpath and the txdata */
fp = &bp->fp[fp_index];
+ txdata = &fp->txdata[txdata_index];
+
+ /* enable this debug print to view the tranmission details
+ DP(BNX2X_MSG_FP,"transmitting packet cid %d fp index %d txdata_index %d"
+ " tx_data ptr %p fp pointer %p",
+ txdata->cid, fp_index, txdata_index, txdata, fp); */
- if (unlikely(bnx2x_tx_avail(fp) < (skb_shinfo(skb)->nr_frags + 3))) {
+ if (unlikely(bnx2x_tx_avail(bp, txdata) <
+ (skb_shinfo(skb)->nr_frags + 3))) {
fp->eth_q_stats.driver_xoff++;
netif_tx_stop_queue(txq);
BNX2X_ERR("BUG! Tx ring full when queue awake!\n");
@@ -2518,7 +2596,7 @@ netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
DP(NETIF_MSG_TX_QUEUED, "queue[%d]: SKB: summed %x protocol %x "
"protocol(%x,%x) gso type %x xmit_type %x\n",
- fp_index, skb->ip_summed, skb->protocol, ipv6_hdr(skb)->nexthdr,
+ txq_index, skb->ip_summed, skb->protocol, ipv6_hdr(skb)->nexthdr,
ip_hdr(skb)->protocol, skb_shinfo(skb)->gso_type, xmit_type);
eth = (struct ethhdr *)skb->data;
@@ -2567,15 +2645,15 @@ netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
/* get current pkt produced now - advance it just before sending packet
* since mapping of pages may fail and cause packet to be dropped
*/
- pkt_prod = fp->tx_pkt_prod;
- bd_prod = TX_BD(fp->tx_bd_prod);
+ pkt_prod = txdata->tx_pkt_prod;
+ bd_prod = TX_BD(txdata->tx_bd_prod);
/* get a tx_buf and first BD
* tx_start_bd may be changed during SPLIT,
* but first_bd will always stay first
*/
- tx_buf = &fp->tx_buf_ring[TX_BD(pkt_prod)];
- tx_start_bd = &fp->tx_desc_ring[bd_prod].start_bd;
+ tx_buf = &txdata->tx_buf_ring[TX_BD(pkt_prod)];
+ tx_start_bd = &txdata->tx_desc_ring[bd_prod].start_bd;
first_bd = tx_start_bd;
tx_start_bd->bd_flags.as_bitfield = ETH_TX_BD_FLAGS_START_BD;
@@ -2586,13 +2664,13 @@ netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
SET_FLAG(tx_start_bd->general_data, ETH_TX_START_BD_HDR_NBDS, 1);
/* remember the first BD of the packet */
- tx_buf->first_bd = fp->tx_bd_prod;
+ tx_buf->first_bd = txdata->tx_bd_prod;
tx_buf->skb = skb;
tx_buf->flags = 0;
DP(NETIF_MSG_TX_QUEUED,
"sending pkt %u @%p next_idx %u bd %u @%p\n",
- pkt_prod, tx_buf, fp->tx_pkt_prod, bd_prod, tx_start_bd);
+ pkt_prod, tx_buf, txdata->tx_pkt_prod, bd_prod, tx_start_bd);
if (vlan_tx_tag_present(skb)) {
tx_start_bd->vlan_or_ethertype =
@@ -2609,7 +2687,7 @@ netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
bnx2x_set_sbd_csum(bp, skb, tx_start_bd, xmit_type);
if (!CHIP_IS_E1x(bp)) {
- pbd_e2 = &fp->tx_desc_ring[bd_prod].parse_bd_e2;
+ pbd_e2 = &txdata->tx_desc_ring[bd_prod].parse_bd_e2;
memset(pbd_e2, 0, sizeof(struct eth_tx_parse_bd_e2));
/* Set PBD in checksum offload case */
if (xmit_type & XMIT_CSUM)
@@ -2631,7 +2709,7 @@ netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
eth->h_dest);
}
} else {
- pbd_e1x = &fp->tx_desc_ring[bd_prod].parse_bd_e1x;
+ pbd_e1x = &txdata->tx_desc_ring[bd_prod].parse_bd_e1x;
memset(pbd_e1x, 0, sizeof(struct eth_tx_parse_bd_e1x));
/* Set PBD in checksum offload case */
if (xmit_type & XMIT_CSUM)
@@ -2663,8 +2741,9 @@ netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
tx_start_bd->bd_flags.as_bitfield |= ETH_TX_BD_FLAGS_SW_LSO;
if (unlikely(skb_headlen(skb) > hlen))
- bd_prod = bnx2x_tx_split(bp, fp, tx_buf, &tx_start_bd,
- hlen, bd_prod, ++nbd);
+ bd_prod = bnx2x_tx_split(bp, txdata, tx_buf,
+ &tx_start_bd, hlen,
+ bd_prod, ++nbd);
if (!CHIP_IS_E1x(bp))
bnx2x_set_pbd_gso_e2(skb, &pbd_e2_parsing_data,
xmit_type);
@@ -2698,14 +2777,15 @@ netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
* before call to bnx2x_free_tx_pkt
*/
first_bd->nbd = cpu_to_le16(nbd);
- bnx2x_free_tx_pkt(bp, fp, TX_BD(fp->tx_pkt_prod));
+ bnx2x_free_tx_pkt(bp, txdata,
+ TX_BD(txdata->tx_pkt_prod));
return NETDEV_TX_OK;
}
bd_prod = TX_BD(NEXT_TX_IDX(bd_prod));
- tx_data_bd = &fp->tx_desc_ring[bd_prod].reg_bd;
+ tx_data_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
if (total_pkt_bd == NULL)
- total_pkt_bd = &fp->tx_desc_ring[bd_prod].reg_bd;
+ total_pkt_bd = &txdata->tx_desc_ring[bd_prod].reg_bd;
tx_data_bd->addr_hi = cpu_to_le32(U64_HI(mapping));
tx_data_bd->addr_lo = cpu_to_le32(U64_LO(mapping));
@@ -2759,7 +2839,7 @@ netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
pbd_e2->parsing_data);
DP(NETIF_MSG_TX_QUEUED, "doorbell: nbd %d bd %u\n", nbd, bd_prod);
- fp->tx_pkt_prod++;
+ txdata->tx_pkt_prod++;
/*
* Make sure that the BD data is updated before updating the producer
* since FW might read the BD right after the producer is updated.
@@ -2769,16 +2849,16 @@ netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
*/
wmb();
- fp->tx_db.data.prod += nbd;
+ txdata->tx_db.data.prod += nbd;
barrier();
- DOORBELL(bp, fp->cid, fp->tx_db.raw);
+ DOORBELL(bp, txdata->cid, txdata->tx_db.raw);
mmiowb();
- fp->tx_bd_prod += nbd;
+ txdata->tx_bd_prod += nbd;
- if (unlikely(bnx2x_tx_avail(fp) < MAX_SKB_FRAGS + 3)) {
+ if (unlikely(bnx2x_tx_avail(bp, txdata) < MAX_SKB_FRAGS + 3)) {
netif_tx_stop_queue(txq);
/* paired memory barrier is in bnx2x_tx_int(), we have to keep
@@ -2787,14 +2867,81 @@ netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
smp_mb();
fp->eth_q_stats.driver_xoff++;
- if (bnx2x_tx_avail(fp) >= MAX_SKB_FRAGS + 3)
+ if (bnx2x_tx_avail(bp, txdata) >= MAX_SKB_FRAGS + 3)
netif_tx_wake_queue(txq);
}
- fp->tx_pkt++;
+ txdata->tx_pkt++;
return NETDEV_TX_OK;
}
+/**
+ * bnx2x_setup_tc - routine to configure net_device for multi tc
+ *
+ * @netdev: net device to configure
+ * @tc: number of traffic classes to enable
+ *
+ * callback connected to the ndo_setup_tc function pointer
+ */
+int bnx2x_setup_tc(struct net_device *dev, u8 num_tc)
+{
+ int cos, prio, count, offset;
+ struct bnx2x *bp = netdev_priv(dev);
+
+ /* setup tc must be called under rtnl lock */
+ ASSERT_RTNL();
+
+ /* no traffic classes requested. aborting */
+ if (!num_tc) {
+ netdev_reset_tc(dev);
+ return 0;
+ }
+
+ /* requested to support too many traffic classes */
+ if (num_tc > bp->max_cos) {
+ DP(NETIF_MSG_TX_ERR, "support for too many traffic classes"
+ " requested: %d. max supported is %d",
+ num_tc, bp->max_cos);
+ return -EINVAL;
+ }
+
+ /* declare amount of supported traffic classes */
+ if (netdev_set_num_tc(dev, num_tc)) {
+ DP(NETIF_MSG_TX_ERR, "failed to declare %d traffic classes",
+ num_tc);
+ return -EINVAL;
+ }
+
+ /* configure priority to traffic class mapping */
+ for (prio = 0; prio < BNX2X_MAX_PRIORITY; prio++) {
+ netdev_set_prio_tc_map(dev, prio, bp->prio_to_cos[prio]);
+ DP(BNX2X_MSG_SP, "mapping priority %d to tc %d",
+ prio, bp->prio_to_cos[prio]);
+ }
+
+
+ /* Use this configuration to diffrentiate tc0 from other COSes
+ This can be used for ets or pfc, and save the effort of setting
+ up a multio class queue disc or negotiating DCBX with a switch
+ netdev_set_prio_tc_map(dev, 0, 0);
+ DP(BNX2X_MSG_SP, "mapping priority %d to tc %d", 0, 0);
+ for (prio = 1; prio < 16; prio++) {
+ netdev_set_prio_tc_map(dev, prio, 1);
+ DP(BNX2X_MSG_SP, "mapping priority %d to tc %d", prio, 1);
+ } */
+
+ /* configure traffic class to transmission queue mapping */
+ for (cos = 0; cos < bp->max_cos; cos++) {
+ count = BNX2X_NUM_ETH_QUEUES(bp);
+ offset = cos * MAX_TXQS_PER_COS;
+ netdev_set_tc_queue(dev, cos, count, offset);
+ DP(BNX2X_MSG_SP, "mapping tc %d to offset %d count %d",
+ cos, offset, count);
+ }
+
+ return 0;
+}
+
/* called with rtnl_lock */
int bnx2x_change_mac_addr(struct net_device *dev, void *p)
{
@@ -2823,6 +2970,7 @@ static void bnx2x_free_fp_mem_at(struct bnx2x *bp, int fp_index)
{
union host_hc_status_block *sb = &bnx2x_fp(bp, fp_index, status_blk);
struct bnx2x_fastpath *fp = &bp->fp[fp_index];
+ u8 cos;
/* Common */
#ifdef BCM_CNIC
@@ -2871,10 +3019,18 @@ static void bnx2x_free_fp_mem_at(struct bnx2x *bp, int fp_index)
/* Tx */
if (!skip_tx_queue(bp, fp_index)) {
/* fastpath tx rings: tx_buf tx_desc */
- BNX2X_FREE(bnx2x_fp(bp, fp_index, tx_buf_ring));
- BNX2X_PCI_FREE(bnx2x_fp(bp, fp_index, tx_desc_ring),
- bnx2x_fp(bp, fp_index, tx_desc_mapping),
- sizeof(union eth_tx_bd_types) * NUM_TX_BD);
+ for_each_cos_in_tx_queue(fp, cos) {
+ struct bnx2x_fp_txdata *txdata = &fp->txdata[cos];
+
+ DP(BNX2X_MSG_SP,
+ "freeing tx memory of fp %d cos %d cid %d",
+ fp_index, cos, txdata->cid);
+
+ BNX2X_FREE(txdata->tx_buf_ring);
+ BNX2X_PCI_FREE(txdata->tx_desc_ring,
+ txdata->tx_desc_mapping,
+ sizeof(union eth_tx_bd_types) * NUM_TX_BD);
+ }
}
/* end of fastpath */
}
@@ -2907,19 +3063,17 @@ static int bnx2x_alloc_fp_mem_at(struct bnx2x *bp, int index)
union host_hc_status_block *sb;
struct bnx2x_fastpath *fp = &bp->fp[index];
int ring_size = 0;
+ u8 cos;
/* if rx_ring_size specified - use it */
int rx_ring_size = bp->rx_ring_size ? bp->rx_ring_size :
- MAX_RX_AVAIL/bp->num_queues;
+ MAX_RX_AVAIL/BNX2X_NUM_RX_QUEUES(bp);
/* allocate at least number of buffers required by FW */
- rx_ring_size = max_t(int, fp->disable_tpa ? MIN_RX_SIZE_NONTPA :
+ rx_ring_size = max_t(int, bp->disable_tpa ? MIN_RX_SIZE_NONTPA :
MIN_RX_SIZE_TPA,
rx_ring_size);
- bnx2x_fp(bp, index, bp) = bp;
- bnx2x_fp(bp, index, index) = index;
-
/* Common */
sb = &bnx2x_fp(bp, index, status_blk);
#ifdef BCM_CNIC
@@ -2947,11 +3101,19 @@ static int bnx2x_alloc_fp_mem_at(struct bnx2x *bp, int index)
/* Tx */
if (!skip_tx_queue(bp, index)) {
/* fastpath tx rings: tx_buf tx_desc */
- BNX2X_ALLOC(bnx2x_fp(bp, index, tx_buf_ring),
+ for_each_cos_in_tx_queue(fp, cos) {
+ struct bnx2x_fp_txdata *txdata = &fp->txdata[cos];
+
+ DP(BNX2X_MSG_SP, "allocating tx memory of "
+ "fp %d cos %d",
+ index, cos);
+
+ BNX2X_ALLOC(txdata->tx_buf_ring,
sizeof(struct sw_tx_bd) * NUM_TX_BD);
- BNX2X_PCI_ALLOC(bnx2x_fp(bp, index, tx_desc_ring),
- &bnx2x_fp(bp, index, tx_desc_mapping),
+ BNX2X_PCI_ALLOC(txdata->tx_desc_ring,
+ &txdata->tx_desc_mapping,
sizeof(union eth_tx_bd_types) * NUM_TX_BD);
+ }
}
/* Rx */
@@ -2994,7 +3156,7 @@ alloc_mem_err:
index, ring_size);
/* FW will drop all packets if queue is not big enough,
* In these cases we disable the queue
- * Min size diferent for TPA and non-TPA queues
+ * Min size is different for OOO, TPA and non-TPA queues
*/
if (ring_size < (fp->disable_tpa ?
MIN_RX_SIZE_NONTPA : MIN_RX_SIZE_TPA)) {
@@ -3012,12 +3174,14 @@ int bnx2x_alloc_fp_mem(struct bnx2x *bp)
/**
* 1. Allocate FP for leading - fatal if error
* 2. {CNIC} Allocate FCoE FP - fatal if error
- * 3. Allocate RSS - fix number of queues if error
+ * 3. {CNIC} Allocate OOO + FWD - disable OOO if error
+ * 4. Allocate RSS - fix number of queues if error
*/
/* leading */
if (bnx2x_alloc_fp_mem_at(bp, 0))
return -ENOMEM;
+
#ifdef BCM_CNIC
if (!NO_FCOE(bp))
/* FCoE */
@@ -3027,6 +3191,7 @@ int bnx2x_alloc_fp_mem(struct bnx2x *bp)
*/
return -ENOMEM;
#endif
+
/* RSS */
for_each_nondefault_eth_queue(bp, i)
if (bnx2x_alloc_fp_mem_at(bp, i))
@@ -3044,7 +3209,7 @@ int bnx2x_alloc_fp_mem(struct bnx2x *bp)
* FCOE_IDX < FWD_IDX < OOO_IDX
*/
- /* move FCoE fp */
+ /* move FCoE fp even NO_FCOE_FLAG is on */
bnx2x_move_fp(bp, FCOE_IDX, FCOE_IDX - delta);
#endif
bp->num_queues -= delta;
@@ -3067,16 +3232,23 @@ int __devinit bnx2x_alloc_mem_bp(struct bnx2x *bp)
struct bnx2x_fastpath *fp;
struct msix_entry *tbl;
struct bnx2x_ilt *ilt;
+ int msix_table_size = 0;
+
+ /*
+ * The biggest MSI-X table we might need is as a maximum number of fast
+ * path IGU SBs plus default SB (for PF).
+ */
+ msix_table_size = bp->igu_sb_cnt + 1;
- /* fp array */
- fp = kzalloc(L2_FP_COUNT(bp->l2_cid_count)*sizeof(*fp), GFP_KERNEL);
+ /* fp array: RSS plus CNIC related L2 queues */
+ fp = kzalloc((BNX2X_MAX_RSS_COUNT(bp) + NON_ETH_CONTEXT_USE) *
+ sizeof(*fp), GFP_KERNEL);
if (!fp)
goto alloc_err;
bp->fp = fp;
/* msix table */
- tbl = kzalloc((FP_SB_COUNT(bp->l2_cid_count) + 1) * sizeof(*tbl),
- GFP_KERNEL);
+ tbl = kzalloc(msix_table_size * sizeof(*tbl), GFP_KERNEL);
if (!tbl)
goto alloc_err;
bp->msix_table = tbl;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-19 06:07:16 +0000