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bnxt_en: Add port statistics support.

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Gather periodic port statistics if the device is PF and link is up.  This
is triggered in bnxt_timer() every one second to request firmware to DMA
the counters.

Signed-off-by: Michael Chan <michael.chan@broadocm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2016-03-07 15:38:45 -05:00 committed by David S. Miller
parent f1a082a6f7
commit 3bdf56c47d
2 changed files with 60 additions and 1 deletions
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50
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View File

@ -2362,6 +2362,14 @@ static void bnxt_free_stats(struct bnxt *bp)
u32 size, i;
struct pci_dev *pdev = bp->pdev;
if (bp->hw_rx_port_stats) {
dma_free_coherent(&pdev->dev, bp->hw_port_stats_size,
bp->hw_rx_port_stats,
bp->hw_rx_port_stats_map);
bp->hw_rx_port_stats = NULL;
bp->flags &= ~BNXT_FLAG_PORT_STATS;
}
if (!bp->bnapi)
return;
@ -2398,6 +2406,24 @@ static int bnxt_alloc_stats(struct bnxt *bp)
cpr->hw_stats_ctx_id = INVALID_STATS_CTX_ID;
}
if (BNXT_PF(bp)) {
bp->hw_port_stats_size = sizeof(struct rx_port_stats) +
sizeof(struct tx_port_stats) + 1024;
bp->hw_rx_port_stats =
dma_alloc_coherent(&pdev->dev, bp->hw_port_stats_size,
&bp->hw_rx_port_stats_map,
GFP_KERNEL);
if (!bp->hw_rx_port_stats)
return -ENOMEM;
bp->hw_tx_port_stats = (void *)(bp->hw_rx_port_stats + 1) +
512;
bp->hw_tx_port_stats_map = bp->hw_rx_port_stats_map +
sizeof(struct rx_port_stats) + 512;
bp->flags |= BNXT_FLAG_PORT_STATS;
}
return 0;
}
@ -3834,6 +3860,23 @@ static int bnxt_hwrm_ver_get(struct bnxt *bp)
return rc;
}
static int bnxt_hwrm_port_qstats(struct bnxt *bp)
{
int rc;
struct bnxt_pf_info *pf = &bp->pf;
struct hwrm_port_qstats_input req = {0};
if (!(bp->flags & BNXT_FLAG_PORT_STATS))
return 0;
bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_QSTATS, -1, -1);
req.port_id = cpu_to_le16(pf->port_id);
req.tx_stat_host_addr = cpu_to_le64(bp->hw_tx_port_stats_map);
req.rx_stat_host_addr = cpu_to_le64(bp->hw_rx_port_stats_map);
rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
return rc;
}
static void bnxt_hwrm_free_tunnel_ports(struct bnxt *bp)
{
if (bp->vxlan_port_cnt) {
@ -5232,6 +5275,10 @@ static void bnxt_timer(unsigned long data)
if (atomic_read(&bp->intr_sem) != 0)
goto bnxt_restart_timer;
if (bp->link_info.link_up && (bp->flags & BNXT_FLAG_PORT_STATS)) {
set_bit(BNXT_PERIODIC_STATS_SP_EVENT, &bp->sp_event);
schedule_work(&bp->sp_task);
}
bnxt_restart_timer:
mod_timer(&bp->timer, jiffies + bp->current_interval);
}
@ -5283,6 +5330,9 @@ static void bnxt_sp_task(struct work_struct *work)
rtnl_unlock();
}
if (test_and_clear_bit(BNXT_PERIODIC_STATS_SP_EVENT, &bp->sp_event))
bnxt_hwrm_port_qstats(bp);
smp_mb__before_atomic();
clear_bit(BNXT_STATE_IN_SP_TASK, &bp->state);
}

11
drivers/net/ethernet/broadcom/bnxt/bnxt.h
View File

@ -873,6 +873,7 @@ struct bnxt {
#define BNXT_FLAG_MSIX_CAP 0x80
#define BNXT_FLAG_RFS 0x100
#define BNXT_FLAG_SHARED_RINGS 0x200
#define BNXT_FLAG_PORT_STATS 0x400
#define BNXT_FLAG_ALL_CONFIG_FEATS (BNXT_FLAG_TPA | \
BNXT_FLAG_RFS | \
@ -925,7 +926,7 @@ struct bnxt {
struct bnxt_queue_info q_info[BNXT_MAX_QUEUE];
unsigned int current_interval;
#define BNXT_TIMER_INTERVAL (HZ / 2)
#define BNXT_TIMER_INTERVAL HZ
struct timer_list timer;
@ -945,6 +946,13 @@ struct bnxt {
void *hwrm_dbg_resp_addr;
dma_addr_t hwrm_dbg_resp_dma_addr;
#define HWRM_DBG_REG_BUF_SIZE 128
struct rx_port_stats *hw_rx_port_stats;
struct tx_port_stats *hw_tx_port_stats;
dma_addr_t hw_rx_port_stats_map;
dma_addr_t hw_tx_port_stats_map;
int hw_port_stats_size;
int hwrm_cmd_timeout;
struct mutex hwrm_cmd_lock; /* serialize hwrm messages */
struct hwrm_ver_get_output ver_resp;
@ -980,6 +988,7 @@ struct bnxt {
#define BNXT_RESET_TASK_SP_EVENT 6
#define BNXT_RST_RING_SP_EVENT 7
#define BNXT_HWRM_PF_UNLOAD_SP_EVENT 8
#define BNXT_PERIODIC_STATS_SP_EVENT 9
struct bnxt_pf_info pf;
#ifdef CONFIG_BNXT_SRIOV