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bnx2x: Handle Rx and Tx together in NAPI

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Put Tx and Rx DPC to be handled in the NAPI:
  - Saves status blocks.
  - Moves the Tx work from hardIRQ to NAPI.

Signed-off-by: Vladislav Zolotarov <vladz@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vladislav Zolotarov 2009-11-16 06:05:58 +00:00 committed by David S. Miller
parent 208f2037ae
commit 54b9ddaa68
2 changed files with 158 additions and 232 deletions
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21
drivers/net/bnx2x.h
View File

@ -259,9 +259,6 @@ struct bnx2x_eth_q_stats {
struct bnx2x_fastpath {
struct napi_struct napi;
u8 is_rx_queue;
struct host_status_block *status_blk;
dma_addr_t status_blk_mapping;
@ -970,8 +967,7 @@ struct bnx2x {
#define BNX2X_STATE_ERROR 0xf000
int multi_mode;
int num_rx_queues;
int num_tx_queues;
int num_queues;
u32 rx_mode;
#define BNX2X_RX_MODE_NONE 0
@ -1074,20 +1070,15 @@ struct bnx2x {
};
#define BNX2X_MAX_QUEUES(bp) (IS_E1HMF(bp) ? (MAX_CONTEXT/(2 * E1HVN_MAX)) \
: (MAX_CONTEXT/2))
#define BNX2X_NUM_QUEUES(bp) (bp->num_rx_queues + bp->num_tx_queues)
#define is_multi(bp) (BNX2X_NUM_QUEUES(bp) > 2)
#define BNX2X_MAX_QUEUES(bp) (IS_E1HMF(bp) ? (MAX_CONTEXT/E1HVN_MAX) \
: MAX_CONTEXT)
#define BNX2X_NUM_QUEUES(bp) (bp->num_queues)
#define is_multi(bp) (BNX2X_NUM_QUEUES(bp) > 1)
#define for_each_rx_queue(bp, var) \
for (var = 0; var < bp->num_rx_queues; var++)
#define for_each_tx_queue(bp, var) \
for (var = bp->num_rx_queues; \
var < BNX2X_NUM_QUEUES(bp); var++)
#define for_each_queue(bp, var) \
for (var = 0; var < BNX2X_NUM_QUEUES(bp); var++)
#define for_each_nondefault_queue(bp, var) \
for (var = 1; var < bp->num_rx_queues; var++)
for (var = 1; var < BNX2X_NUM_QUEUES(bp); var++)
void bnx2x_read_dmae(struct bnx2x *bp, u32 src_addr, u32 len32);

369
drivers/net/bnx2x_main.c
View File

@ -57,7 +57,7 @@
#include "bnx2x_init_ops.h"
#include "bnx2x_dump.h"
#define DRV_MODULE_VERSION "1.52.1-4"
#define DRV_MODULE_VERSION "1.52.1-5"
#define DRV_MODULE_RELDATE "2009/11/09"
#define BNX2X_BC_VER 0x040200
@ -91,15 +91,10 @@ module_param(multi_mode, int, 0);
MODULE_PARM_DESC(multi_mode, " Multi queue mode "
"(0 Disable; 1 Enable (default))");
static int num_rx_queues;
module_param(num_rx_queues, int, 0);
MODULE_PARM_DESC(num_rx_queues, " Number of Rx queues for multi_mode=1"
" (default is half number of CPUs)");
static int num_tx_queues;
module_param(num_tx_queues, int, 0);
MODULE_PARM_DESC(num_tx_queues, " Number of Tx queues for multi_mode=1"
" (default is half number of CPUs)");
static int num_queues;
module_param(num_queues, int, 0);
MODULE_PARM_DESC(num_queues, " Number of queues for multi_mode=1"
" (default is as a number of CPUs)");
static int disable_tpa;
module_param(disable_tpa, int, 0);
@ -558,7 +553,7 @@ static void bnx2x_panic_dump(struct bnx2x *bp)
bp->def_att_idx, bp->attn_state, bp->spq_prod_idx);
/* Rx */
for_each_rx_queue(bp, i) {
for_each_queue(bp, i) {
struct bnx2x_fastpath *fp = &bp->fp[i];
BNX2X_ERR("fp%d: rx_bd_prod(%x) rx_bd_cons(%x)"
@ -575,7 +570,7 @@ static void bnx2x_panic_dump(struct bnx2x *bp)
}
/* Tx */
for_each_tx_queue(bp, i) {
for_each_queue(bp, i) {
struct bnx2x_fastpath *fp = &bp->fp[i];
BNX2X_ERR("fp%d: tx_pkt_prod(%x) tx_pkt_cons(%x)"
@ -590,7 +585,7 @@ static void bnx2x_panic_dump(struct bnx2x *bp)
/* Rings */
/* Rx */
for_each_rx_queue(bp, i) {
for_each_queue(bp, i) {
struct bnx2x_fastpath *fp = &bp->fp[i];
start = RX_BD(le16_to_cpu(*fp->rx_cons_sb) - 10);
@ -624,7 +619,7 @@ static void bnx2x_panic_dump(struct bnx2x *bp)
}
/* Tx */
for_each_tx_queue(bp, i) {
for_each_queue(bp, i) {
struct bnx2x_fastpath *fp = &bp->fp[i];
start = TX_BD(le16_to_cpu(*fp->tx_cons_sb) - 10);
@ -792,21 +787,13 @@ static inline void bnx2x_ack_sb(struct bnx2x *bp, u8 sb_id,
barrier();
}
static inline u16 bnx2x_update_fpsb_idx(struct bnx2x_fastpath *fp)
static inline void bnx2x_update_fpsb_idx(struct bnx2x_fastpath *fp)
{
struct host_status_block *fpsb = fp->status_blk;
u16 rc = 0;
barrier(); /* status block is written to by the chip */
if (fp->fp_c_idx != fpsb->c_status_block.status_block_index) {
fp->fp_c_idx = fpsb->c_status_block.status_block_index;
rc |= 1;
}
if (fp->fp_u_idx != fpsb->u_status_block.status_block_index) {
fp->fp_u_idx = fpsb->u_status_block.status_block_index;
rc |= 2;
}
return rc;
fp->fp_c_idx = fpsb->c_status_block.status_block_index;
fp->fp_u_idx = fpsb->u_status_block.status_block_index;
}
static u16 bnx2x_ack_int(struct bnx2x *bp)
@ -846,6 +833,9 @@ static u16 bnx2x_free_tx_pkt(struct bnx2x *bp, struct bnx2x_fastpath *fp,
u16 bd_idx = TX_BD(tx_buf->first_bd), new_cons;
int nbd;
/* prefetch skb end pointer to speedup dev_kfree_skb() */
prefetch(&skb->end);
DP(BNX2X_MSG_OFF, "pkt_idx %d buff @(%p)->skb %p\n",
idx, tx_buf, skb);
@ -890,7 +880,7 @@ static u16 bnx2x_free_tx_pkt(struct bnx2x *bp, struct bnx2x_fastpath *fp,
/* release skb */
WARN_ON(!skb);
dev_kfree_skb_any(skb);
dev_kfree_skb(skb);
tx_buf->first_bd = 0;
tx_buf->skb = NULL;
@ -920,19 +910,28 @@ static inline u16 bnx2x_tx_avail(struct bnx2x_fastpath *fp)
return (s16)(fp->bp->tx_ring_size) - used;
}
static void bnx2x_tx_int(struct bnx2x_fastpath *fp)
static inline int bnx2x_has_tx_work(struct bnx2x_fastpath *fp)
{
u16 hw_cons;
/* Tell compiler that status block fields can change */
barrier();
hw_cons = le16_to_cpu(*fp->tx_cons_sb);
return hw_cons != fp->tx_pkt_cons;
}
static int bnx2x_tx_int(struct bnx2x_fastpath *fp)
{
struct bnx2x *bp = fp->bp;
struct netdev_queue *txq;
u16 hw_cons, sw_cons, bd_cons = fp->tx_bd_cons;
int done = 0;
#ifdef BNX2X_STOP_ON_ERROR
if (unlikely(bp->panic))
return;
return -1;
#endif
txq = netdev_get_tx_queue(bp->dev, fp->index - bp->num_rx_queues);
txq = netdev_get_tx_queue(bp->dev, fp->index);
hw_cons = le16_to_cpu(*fp->tx_cons_sb);
sw_cons = fp->tx_pkt_cons;
@ -953,7 +952,6 @@ static void bnx2x_tx_int(struct bnx2x_fastpath *fp)
*/
bd_cons = bnx2x_free_tx_pkt(bp, fp, pkt_cons);
sw_cons++;
done++;
}
fp->tx_pkt_cons = sw_cons;
@ -975,6 +973,7 @@ static void bnx2x_tx_int(struct bnx2x_fastpath *fp)
(bnx2x_tx_avail(fp) >= MAX_SKB_FRAGS + 3))
netif_tx_wake_queue(txq);
}
return 0;
}
#ifdef BCM_CNIC
@ -1561,6 +1560,8 @@ static int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget)
} else {
rx_buf = &fp->rx_buf_ring[bd_cons];
skb = rx_buf->skb;
prefetch(skb);
prefetch((u8 *)skb + 256);
len = le16_to_cpu(cqe->fast_path_cqe.pkt_len);
pad = cqe->fast_path_cqe.placement_offset;
@ -1742,27 +1743,13 @@ static irqreturn_t bnx2x_msix_fp_int(int irq, void *fp_cookie)
if (unlikely(bp->panic))
return IRQ_HANDLED;
#endif
/* Handle Rx or Tx according to MSI-X vector */
if (fp->is_rx_queue) {
prefetch(fp->rx_cons_sb);
prefetch(&fp->status_blk->u_status_block.status_block_index);
napi_schedule(&bnx2x_fp(bp, fp->index, napi));
} else {
prefetch(fp->tx_cons_sb);
prefetch(&fp->status_blk->c_status_block.status_block_index);
bnx2x_update_fpsb_idx(fp);
rmb();
bnx2x_tx_int(fp);
/* Re-enable interrupts */
bnx2x_ack_sb(bp, fp->sb_id, USTORM_ID,
le16_to_cpu(fp->fp_u_idx), IGU_INT_NOP, 1);
bnx2x_ack_sb(bp, fp->sb_id, CSTORM_ID,
le16_to_cpu(fp->fp_c_idx), IGU_INT_ENABLE, 1);
}
/* Handle Rx and Tx according to MSI-X vector */
prefetch(fp->rx_cons_sb);
prefetch(fp->tx_cons_sb);
prefetch(&fp->status_blk->u_status_block.status_block_index);
prefetch(&fp->status_blk->c_status_block.status_block_index);
napi_schedule(&bnx2x_fp(bp, fp->index, napi));
return IRQ_HANDLED;
}
@ -1797,31 +1784,14 @@ static irqreturn_t bnx2x_interrupt(int irq, void *dev_instance)
mask = 0x2 << fp->sb_id;
if (status & mask) {
/* Handle Rx or Tx according to SB id */
if (fp->is_rx_queue) {
prefetch(fp->rx_cons_sb);
prefetch(&fp->status_blk->u_status_block.
status_block_index);
napi_schedule(&bnx2x_fp(bp, fp->index, napi));
} else {
prefetch(fp->tx_cons_sb);
prefetch(&fp->status_blk->c_status_block.
status_block_index);
bnx2x_update_fpsb_idx(fp);
rmb();
bnx2x_tx_int(fp);
/* Re-enable interrupts */
bnx2x_ack_sb(bp, fp->sb_id, USTORM_ID,
le16_to_cpu(fp->fp_u_idx),
IGU_INT_NOP, 1);
bnx2x_ack_sb(bp, fp->sb_id, CSTORM_ID,
le16_to_cpu(fp->fp_c_idx),
IGU_INT_ENABLE, 1);
}
/* Handle Rx and Tx according to SB id */
prefetch(fp->rx_cons_sb);
prefetch(&fp->status_blk->u_status_block.
status_block_index);
prefetch(fp->tx_cons_sb);
prefetch(&fp->status_blk->c_status_block.
status_block_index);
napi_schedule(&bnx2x_fp(bp, fp->index, napi));
status &= ~mask;
}
}
@ -4027,7 +3997,7 @@ static int bnx2x_storm_stats_update(struct bnx2x *bp)
estats->no_buff_discard_hi = 0;
estats->no_buff_discard_lo = 0;
for_each_rx_queue(bp, i) {
for_each_queue(bp, i) {
struct bnx2x_fastpath *fp = &bp->fp[i];
int cl_id = fp->cl_id;
struct tstorm_per_client_stats *tclient =
@ -4244,7 +4214,7 @@ static void bnx2x_net_stats_update(struct bnx2x *bp)
nstats->tx_bytes = bnx2x_hilo(&estats->total_bytes_transmitted_hi);
nstats->rx_dropped = estats->mac_discard;
for_each_rx_queue(bp, i)
for_each_queue(bp, i)
nstats->rx_dropped +=
le32_to_cpu(bp->fp[i].old_tclient.checksum_discard);
@ -4298,7 +4268,7 @@ static void bnx2x_drv_stats_update(struct bnx2x *bp)
estats->rx_err_discard_pkt = 0;
estats->rx_skb_alloc_failed = 0;
estats->hw_csum_err = 0;
for_each_rx_queue(bp, i) {
for_each_queue(bp, i) {
struct bnx2x_eth_q_stats *qstats = &bp->fp[i].eth_q_stats;
estats->driver_xoff += qstats->driver_xoff;
@ -4329,7 +4299,7 @@ static void bnx2x_stats_update(struct bnx2x *bp)
if (bp->msglevel & NETIF_MSG_TIMER) {
struct bnx2x_fastpath *fp0_rx = bp->fp;
struct bnx2x_fastpath *fp0_tx = &(bp->fp[bp->num_rx_queues]);
struct bnx2x_fastpath *fp0_tx = bp->fp;
struct tstorm_per_client_stats *old_tclient =
&bp->fp->old_tclient;
struct bnx2x_eth_q_stats *qstats = &bp->fp->eth_q_stats;
@ -4984,7 +4954,7 @@ static void bnx2x_init_rx_rings(struct bnx2x *bp)
if (bp->flags & TPA_ENABLE_FLAG) {
for_each_rx_queue(bp, j) {
for_each_queue(bp, j) {
struct bnx2x_fastpath *fp = &bp->fp[j];
for (i = 0; i < max_agg_queues; i++) {
@ -5007,16 +4977,13 @@ static void bnx2x_init_rx_rings(struct bnx2x *bp)
}
}
for_each_rx_queue(bp, j) {
for_each_queue(bp, j) {
struct bnx2x_fastpath *fp = &bp->fp[j];
fp->rx_bd_cons = 0;
fp->rx_cons_sb = BNX2X_RX_SB_INDEX;
fp->rx_bd_cons_sb = BNX2X_RX_SB_BD_INDEX;
/* Mark queue as Rx */
fp->is_rx_queue = 1;
/* "next page" elements initialization */
/* SGE ring */
for (i = 1; i <= NUM_RX_SGE_PAGES; i++) {
@ -5122,7 +5089,7 @@ static void bnx2x_init_tx_ring(struct bnx2x *bp)
{
int i, j;
for_each_tx_queue(bp, j) {
for_each_queue(bp, j) {
struct bnx2x_fastpath *fp = &bp->fp[j];
for (i = 1; i <= NUM_TX_RINGS; i++) {
@ -5148,10 +5115,6 @@ static void bnx2x_init_tx_ring(struct bnx2x *bp)
fp->tx_cons_sb = BNX2X_TX_SB_INDEX;
fp->tx_pkt = 0;
}
/* clean tx statistics */
for_each_rx_queue(bp, i)
bnx2x_fp(bp, i, tx_pkt) = 0;
}
static void bnx2x_init_sp_ring(struct bnx2x *bp)
@ -5180,7 +5143,8 @@ static void bnx2x_init_context(struct bnx2x *bp)
{
int i;
for_each_rx_queue(bp, i) {
/* Rx */
for_each_queue(bp, i) {
struct eth_context *context = bnx2x_sp(bp, context[i].eth);
struct bnx2x_fastpath *fp = &bp->fp[i];
u8 cl_id = fp->cl_id;
@ -5232,10 +5196,11 @@ static void bnx2x_init_context(struct bnx2x *bp)
ETH_CONNECTION_TYPE);
}
for_each_tx_queue(bp, i) {
/* Tx */
for_each_queue(bp, i) {
struct bnx2x_fastpath *fp = &bp->fp[i];
struct eth_context *context =
bnx2x_sp(bp, context[i - bp->num_rx_queues].eth);
bnx2x_sp(bp, context[i].eth);
context->cstorm_st_context.sb_index_number =
C_SB_ETH_TX_CQ_INDEX;
@ -5263,7 +5228,7 @@ static void bnx2x_init_ind_table(struct bnx2x *bp)
for (i = 0; i < TSTORM_INDIRECTION_TABLE_SIZE; i++)
REG_WR8(bp, BAR_TSTRORM_INTMEM +
TSTORM_INDIRECTION_TABLE_OFFSET(func) + i,
bp->fp->cl_id + (i % bp->num_rx_queues));
bp->fp->cl_id + (i % bp->num_queues));
}
static void bnx2x_set_client_config(struct bnx2x *bp)
@ -5507,7 +5472,7 @@ static void bnx2x_init_internal_func(struct bnx2x *bp)
min((u32)(min((u32)8, (u32)MAX_SKB_FRAGS) *
SGE_PAGE_SIZE * PAGES_PER_SGE),
(u32)0xffff);
for_each_rx_queue(bp, i) {
for_each_queue(bp, i) {
struct bnx2x_fastpath *fp = &bp->fp[i];
REG_WR(bp, BAR_USTRORM_INTMEM +
@ -5542,7 +5507,7 @@ static void bnx2x_init_internal_func(struct bnx2x *bp)
rx_pause.cqe_thr_high = 350;
rx_pause.sge_thr_high = 0;
for_each_rx_queue(bp, i) {
for_each_queue(bp, i) {
struct bnx2x_fastpath *fp = &bp->fp[i];
if (!fp->disable_tpa) {
@ -5637,9 +5602,6 @@ static void bnx2x_nic_init(struct bnx2x *bp, u32 load_code)
#else
fp->sb_id = fp->cl_id;
#endif
/* Suitable Rx and Tx SBs are served by the same client */
if (i >= bp->num_rx_queues)
fp->cl_id -= bp->num_rx_queues;
DP(NETIF_MSG_IFUP,
"queue[%d]: bnx2x_init_sb(%p,%p) cl_id %d sb %d\n",
i, bp, fp->status_blk, fp->cl_id, fp->sb_id);
@ -6749,7 +6711,7 @@ static void bnx2x_free_mem(struct bnx2x *bp)
sizeof(struct host_status_block));
}
/* Rx */
for_each_rx_queue(bp, i) {
for_each_queue(bp, i) {
/* fastpath rx rings: rx_buf rx_desc rx_comp */
BNX2X_FREE(bnx2x_fp(bp, i, rx_buf_ring));
@ -6769,7 +6731,7 @@ static void bnx2x_free_mem(struct bnx2x *bp)
BCM_PAGE_SIZE * NUM_RX_SGE_PAGES);
}
/* Tx */
for_each_tx_queue(bp, i) {
for_each_queue(bp, i) {
/* fastpath tx rings: tx_buf tx_desc */
BNX2X_FREE(bnx2x_fp(bp, i, tx_buf_ring));
@ -6831,7 +6793,7 @@ static int bnx2x_alloc_mem(struct bnx2x *bp)
sizeof(struct host_status_block));
}
/* Rx */
for_each_rx_queue(bp, i) {
for_each_queue(bp, i) {
/* fastpath rx rings: rx_buf rx_desc rx_comp */
BNX2X_ALLOC(bnx2x_fp(bp, i, rx_buf_ring),
@ -6853,7 +6815,7 @@ static int bnx2x_alloc_mem(struct bnx2x *bp)
BCM_PAGE_SIZE * NUM_RX_SGE_PAGES);
}
/* Tx */
for_each_tx_queue(bp, i) {
for_each_queue(bp, i) {
/* fastpath tx rings: tx_buf tx_desc */
BNX2X_ALLOC(bnx2x_fp(bp, i, tx_buf_ring),
@ -6909,7 +6871,7 @@ static void bnx2x_free_tx_skbs(struct bnx2x *bp)
{
int i;
for_each_tx_queue(bp, i) {
for_each_queue(bp, i) {
struct bnx2x_fastpath *fp = &bp->fp[i];
u16 bd_cons = fp->tx_bd_cons;
@ -6927,7 +6889,7 @@ static void bnx2x_free_rx_skbs(struct bnx2x *bp)
{
int i, j;
for_each_rx_queue(bp, j) {
for_each_queue(bp, j) {
struct bnx2x_fastpath *fp = &bp->fp[j];
for (i = 0; i < NUM_RX_BD; i++) {
@ -7042,12 +7004,8 @@ static int bnx2x_req_msix_irqs(struct bnx2x *bp)
#endif
for_each_queue(bp, i) {
struct bnx2x_fastpath *fp = &bp->fp[i];
if (i < bp->num_rx_queues)
sprintf(fp->name, "%s-rx-%d", bp->dev->name, i);
else
sprintf(fp->name, "%s-tx-%d",
bp->dev->name, i - bp->num_rx_queues);
snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
bp->dev->name, i);
rc = request_irq(bp->msix_table[i + offset].vector,
bnx2x_msix_fp_int, 0, fp->name, fp);
@ -7106,7 +7064,7 @@ static void bnx2x_napi_enable(struct bnx2x *bp)
{
int i;
for_each_rx_queue(bp, i)
for_each_queue(bp, i)
napi_enable(&bnx2x_fp(bp, i, napi));
}
@ -7114,7 +7072,7 @@ static void bnx2x_napi_disable(struct bnx2x *bp)
{
int i;
for_each_rx_queue(bp, i)
for_each_queue(bp, i)
napi_disable(&bnx2x_fp(bp, i, napi));
}
@ -7410,88 +7368,60 @@ static int bnx2x_setup_multi(struct bnx2x *bp, int index)
static int bnx2x_poll(struct napi_struct *napi, int budget);
static void bnx2x_set_int_mode_msix(struct bnx2x *bp, int *num_rx_queues_out,
int *num_tx_queues_out)
static void bnx2x_set_num_queues_msix(struct bnx2x *bp)
{
int _num_rx_queues = 0, _num_tx_queues = 0;
switch (bp->multi_mode) {
case ETH_RSS_MODE_DISABLED:
_num_rx_queues = 1;
_num_tx_queues = 1;
bp->num_queues = 1;
break;
case ETH_RSS_MODE_REGULAR:
if (num_rx_queues)
_num_rx_queues = min_t(u32, num_rx_queues,
BNX2X_MAX_QUEUES(bp));
if (num_queues)
bp->num_queues = min_t(u32, num_queues,
BNX2X_MAX_QUEUES(bp));
else
_num_rx_queues = min_t(u32, num_online_cpus(),
BNX2X_MAX_QUEUES(bp));
if (num_tx_queues)
_num_tx_queues = min_t(u32, num_tx_queues,
BNX2X_MAX_QUEUES(bp));
else
_num_tx_queues = min_t(u32, num_online_cpus(),
BNX2X_MAX_QUEUES(bp));
/* There must be not more Tx queues than Rx queues */
if (_num_tx_queues > _num_rx_queues) {
BNX2X_ERR("number of tx queues (%d) > "
"number of rx queues (%d)"
" defaulting to %d\n",
_num_tx_queues, _num_rx_queues,
_num_rx_queues);
_num_tx_queues = _num_rx_queues;
}
bp->num_queues = min_t(u32, num_online_cpus(),
BNX2X_MAX_QUEUES(bp));
break;
default:
_num_rx_queues = 1;
_num_tx_queues = 1;
bp->num_queues = 1;
break;
}
*num_rx_queues_out = _num_rx_queues;
*num_tx_queues_out = _num_tx_queues;
}
static int bnx2x_set_int_mode(struct bnx2x *bp)
static int bnx2x_set_num_queues(struct bnx2x *bp)
{
int rc = 0;
switch (int_mode) {
case INT_MODE_INTx:
case INT_MODE_MSI:
bp->num_rx_queues = 1;
bp->num_tx_queues = 1;
bp->num_queues = 1;
DP(NETIF_MSG_IFUP, "set number of queues to 1\n");
break;
case INT_MODE_MSIX:
default:
/* Set interrupt mode according to bp->multi_mode value */
bnx2x_set_int_mode_msix(bp, &bp->num_rx_queues,
&bp->num_tx_queues);
/* Set number of queues according to bp->multi_mode value */
bnx2x_set_num_queues_msix(bp);
DP(NETIF_MSG_IFUP, "set number of queues to: rx %d tx %d\n",
bp->num_rx_queues, bp->num_tx_queues);
DP(NETIF_MSG_IFUP, "set number of queues to %d\n",
bp->num_queues);
/* if we can't use MSI-X we only need one fp,
* so try to enable MSI-X with the requested number of fp's
* and fallback to MSI or legacy INTx with one fp
*/
rc = bnx2x_enable_msix(bp);
if (rc) {
if (rc)
/* failed to enable MSI-X */
bp->num_rx_queues = 1;
bp->num_tx_queues = 1;
}
bp->num_queues = 1;
break;
}
bp->dev->real_num_tx_queues = bp->num_tx_queues;
bp->dev->real_num_tx_queues = bp->num_queues;
return rc;
}
@ -7513,16 +7443,16 @@ static int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
bp->state = BNX2X_STATE_OPENING_WAIT4_LOAD;
rc = bnx2x_set_int_mode(bp);
rc = bnx2x_set_num_queues(bp);
if (bnx2x_alloc_mem(bp))
return -ENOMEM;
for_each_rx_queue(bp, i)
for_each_queue(bp, i)
bnx2x_fp(bp, i, disable_tpa) =
((bp->flags & TPA_ENABLE_FLAG) == 0);
for_each_rx_queue(bp, i)
for_each_queue(bp, i)
netif_napi_add(bp->dev, &bnx2x_fp(bp, i, napi),
bnx2x_poll, 128);
@ -7536,7 +7466,7 @@ static int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
}
} else {
/* Fall to INTx if failed to enable MSI-X due to lack of
memory (in bnx2x_set_int_mode()) */
memory (in bnx2x_set_num_queues()) */
if ((rc != -ENOMEM) && (int_mode != INT_MODE_INTx))
bnx2x_enable_msi(bp);
bnx2x_ack_int(bp);
@ -7730,14 +7660,14 @@ static int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
bp->port.pmf = 0;
/* Free SKBs, SGEs, TPA pool and driver internals */
bnx2x_free_skbs(bp);
for_each_rx_queue(bp, i)
for_each_queue(bp, i)
bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
load_error2:
/* Release IRQs */
bnx2x_free_irq(bp);
load_error1:
bnx2x_napi_disable(bp);
for_each_rx_queue(bp, i)
for_each_queue(bp, i)
netif_napi_del(&bnx2x_fp(bp, i, napi));
bnx2x_free_mem(bp);
@ -7928,7 +7858,7 @@ static int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode)
bnx2x_free_irq(bp);
/* Wait until tx fastpath tasks complete */
for_each_tx_queue(bp, i) {
for_each_queue(bp, i) {
struct bnx2x_fastpath *fp = &bp->fp[i];
cnt = 1000;
@ -8071,9 +8001,9 @@ static int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode)
/* Free SKBs, SGEs, TPA pool and driver internals */
bnx2x_free_skbs(bp);
for_each_rx_queue(bp, i)
for_each_queue(bp, i)
bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
for_each_rx_queue(bp, i)
for_each_queue(bp, i)
netif_napi_del(&bnx2x_fp(bp, i, napi));
bnx2x_free_mem(bp);
@ -10269,7 +10199,7 @@ static int bnx2x_run_loopback(struct bnx2x *bp, int loopback_mode, u8 link_up)
struct sk_buff *skb;
unsigned char *packet;
struct bnx2x_fastpath *fp_rx = &bp->fp[0];
struct bnx2x_fastpath *fp_tx = &bp->fp[bp->num_rx_queues];
struct bnx2x_fastpath *fp_tx = &bp->fp[0];
u16 tx_start_idx, tx_idx;
u16 rx_start_idx, rx_idx;
u16 pkt_prod, bd_prod;
@ -10346,7 +10276,7 @@ static int bnx2x_run_loopback(struct bnx2x *bp, int loopback_mode, u8 link_up)
fp_tx->tx_db.data.prod += 2;
barrier();
DOORBELL(bp, fp_tx->index - bp->num_rx_queues, fp_tx->tx_db.raw);
DOORBELL(bp, fp_tx->index, fp_tx->tx_db.raw);
mmiowb();
@ -10725,7 +10655,7 @@ static int bnx2x_get_sset_count(struct net_device *dev, int stringset)
switch(stringset) {
case ETH_SS_STATS:
if (is_multi(bp)) {
num_stats = BNX2X_NUM_Q_STATS * bp->num_rx_queues;
num_stats = BNX2X_NUM_Q_STATS * bp->num_queues;
if (!IS_E1HMF_MODE_STAT(bp))
num_stats += BNX2X_NUM_STATS;
} else {
@ -10756,7 +10686,7 @@ static void bnx2x_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
case ETH_SS_STATS:
if (is_multi(bp)) {
k = 0;
for_each_rx_queue(bp, i) {
for_each_queue(bp, i) {
for (j = 0; j < BNX2X_NUM_Q_STATS; j++)
sprintf(buf + (k + j)*ETH_GSTRING_LEN,
bnx2x_q_stats_arr[j].string, i);
@ -10793,7 +10723,7 @@ static void bnx2x_get_ethtool_stats(struct net_device *dev,
if (is_multi(bp)) {
k = 0;
for_each_rx_queue(bp, i) {
for_each_queue(bp, i) {
hw_stats = (u32 *)&bp->fp[i].eth_q_stats;
for (j = 0; j < BNX2X_NUM_Q_STATS; j++) {
if (bnx2x_q_stats_arr[j].size == 0) {
@ -10989,54 +10919,60 @@ static inline int bnx2x_has_rx_work(struct bnx2x_fastpath *fp)
static int bnx2x_poll(struct napi_struct *napi, int budget)
{
int work_done = 0;
struct bnx2x_fastpath *fp = container_of(napi, struct bnx2x_fastpath,
napi);
struct bnx2x *bp = fp->bp;
int work_done = 0;
while (1) {
#ifdef BNX2X_STOP_ON_ERROR
if (unlikely(bp->panic))
goto poll_panic;
if (unlikely(bp->panic)) {
napi_complete(napi);
return 0;
}
#endif
prefetch(fp->rx_buf_ring[RX_BD(fp->rx_bd_cons)].skb);
prefetch((char *)(fp->rx_buf_ring[RX_BD(fp->rx_bd_cons)].skb) + 256);
if (bnx2x_has_tx_work(fp))
bnx2x_tx_int(fp);
bnx2x_update_fpsb_idx(fp);
if (bnx2x_has_rx_work(fp)) {
work_done += bnx2x_rx_int(fp, budget - work_done);
if (bnx2x_has_rx_work(fp)) {
work_done = bnx2x_rx_int(fp, budget);
/* must not complete if we consumed full budget */
if (work_done >= budget)
break;
}
/* must not complete if we consumed full budget */
if (work_done >= budget)
goto poll_again;
/* Fall out from the NAPI loop if needed */
if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) {
bnx2x_update_fpsb_idx(fp);
/* bnx2x_has_rx_work() reads the status block, thus we need
* to ensure that status block indices have been actually read
* (bnx2x_update_fpsb_idx) prior to this check
* (bnx2x_has_rx_work) so that we won't write the "newer"
* value of the status block to IGU (if there was a DMA right
* after bnx2x_has_rx_work and if there is no rmb, the memory
* reading (bnx2x_update_fpsb_idx) may be postponed to right
* before bnx2x_ack_sb). In this case there will never be
* another interrupt until there is another update of the
* status block, while there is still unhandled work.
*/
rmb();
if (!(bnx2x_has_rx_work(fp) || bnx2x_has_tx_work(fp))) {
napi_complete(napi);
/* Re-enable interrupts */
bnx2x_ack_sb(bp, fp->sb_id, CSTORM_ID,
le16_to_cpu(fp->fp_c_idx),
IGU_INT_NOP, 1);
bnx2x_ack_sb(bp, fp->sb_id, USTORM_ID,
le16_to_cpu(fp->fp_u_idx),
IGU_INT_ENABLE, 1);
break;
}
}
}
/* bnx2x_has_rx_work() reads the status block, thus we need to
* ensure that status block indices have been actually read
* (bnx2x_update_fpsb_idx) prior to this check (bnx2x_has_rx_work)
* so that we won't write the "newer" value of the status block to IGU
* (if there was a DMA right after bnx2x_has_rx_work and
* if there is no rmb, the memory reading (bnx2x_update_fpsb_idx)
* may be postponed to right before bnx2x_ack_sb). In this case
* there will never be another interrupt until there is another update
* of the status block, while there is still unhandled work.
*/
rmb();
if (!bnx2x_has_rx_work(fp)) {
#ifdef BNX2X_STOP_ON_ERROR
poll_panic:
#endif
napi_complete(napi);
bnx2x_ack_sb(bp, fp->sb_id, USTORM_ID,
le16_to_cpu(fp->fp_u_idx), IGU_INT_NOP, 1);
bnx2x_ack_sb(bp, fp->sb_id, CSTORM_ID,
le16_to_cpu(fp->fp_c_idx), IGU_INT_ENABLE, 1);
}
poll_again:
return work_done;
}
@ -11221,7 +11157,7 @@ static int bnx2x_pkt_req_lin(struct bnx2x *bp, struct sk_buff *skb,
static netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct bnx2x *bp = netdev_priv(dev);
struct bnx2x_fastpath *fp, *fp_stat;
struct bnx2x_fastpath *fp;
struct netdev_queue *txq;
struct sw_tx_bd *tx_buf;
struct eth_tx_start_bd *tx_start_bd;
@ -11243,11 +11179,10 @@ static netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
fp_index = skb_get_queue_mapping(skb);
txq = netdev_get_tx_queue(dev, fp_index);
fp = &bp->fp[fp_index + bp->num_rx_queues];
fp_stat = &bp->fp[fp_index];
fp = &bp->fp[fp_index];
if (unlikely(bnx2x_tx_avail(fp) < (skb_shinfo(skb)->nr_frags + 3))) {
fp_stat->eth_q_stats.driver_xoff++;
fp->eth_q_stats.driver_xoff++;
netif_tx_stop_queue(txq);
BNX2X_ERR("BUG! Tx ring full when queue awake!\n");
return NETDEV_TX_BUSY;
@ -11473,7 +11408,7 @@ static netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
fp->tx_db.data.prod += nbd;
barrier();
DOORBELL(bp, fp->index - bp->num_rx_queues, fp->tx_db.raw);
DOORBELL(bp, fp->index, fp->tx_db.raw);
mmiowb();
@ -11484,11 +11419,11 @@ static netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
/* We want bnx2x_tx_int to "see" the updated tx_bd_prod
if we put Tx into XOFF state. */
smp_mb();
fp_stat->eth_q_stats.driver_xoff++;
fp->eth_q_stats.driver_xoff++;
if (bnx2x_tx_avail(fp) >= MAX_SKB_FRAGS + 3)
netif_tx_wake_queue(txq);
}
fp_stat->tx_pkt++;
fp->tx_pkt++;
return NETDEV_TX_OK;
}
@ -12376,9 +12311,9 @@ static int bnx2x_eeh_nic_unload(struct bnx2x *bp)
/* Free SKBs, SGEs, TPA pool and driver internals */
bnx2x_free_skbs(bp);
for_each_rx_queue(bp, i)
for_each_queue(bp, i)
bnx2x_free_rx_sge_range(bp, bp->fp + i, NUM_RX_SGE);
for_each_rx_queue(bp, i)
for_each_queue(bp, i)
netif_napi_del(&bnx2x_fp(bp, i, napi));
bnx2x_free_mem(bp);