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i40e: Add tx_stopped stat

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Track TX queue stop events and export the new stat with ethtool.

Signed-off-by: Joe Damato <jdamato@fastly.com>
Tested-by: Gurucharan <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
This commit is contained in:
Joe Damato 2022-03-24 12:46:58 -07:00 committed by Tony Nguyen
parent 69e66c04c6
commit f728fa0166
6 changed files with 12 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/ethernet/intel/i40e/i40e.h
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@ -852,6 +852,7 @@ struct i40e_vsi {
u64 tx_busy;
u64 tx_linearize;
u64 tx_force_wb;
u64 tx_stopped;
u64 rx_buf_failed;
u64 rx_page_failed;
u64 rx_page_reuse;

5
drivers/net/ethernet/intel/i40e/i40e_debugfs.c
View File

@ -309,10 +309,11 @@ static void i40e_dbg_dump_vsi_seid(struct i40e_pf *pf, int seid)
tx_ring->stats.bytes,
tx_ring->tx_stats.restart_queue);
dev_info(&pf->pdev->dev,
" tx_rings[%i]: tx_stats: tx_busy = %lld, tx_done_old = %lld\n",
" tx_rings[%i]: tx_stats: tx_busy = %lld, tx_done_old = %lld, tx_stopped = %lld\n",
i,
tx_ring->tx_stats.tx_busy,
tx_ring->tx_stats.tx_done_old);
tx_ring->tx_stats.tx_done_old,
tx_ring->tx_stats.tx_stopped);
dev_info(&pf->pdev->dev,
" tx_rings[%i]: size = %i\n",
i, tx_ring->size);

1
drivers/net/ethernet/intel/i40e/i40e_ethtool.c
View File

@ -293,6 +293,7 @@ static const struct i40e_stats i40e_gstrings_misc_stats[] = {
I40E_VSI_STAT("tx_linearize", tx_linearize),
I40E_VSI_STAT("tx_force_wb", tx_force_wb),
I40E_VSI_STAT("tx_busy", tx_busy),
I40E_VSI_STAT("tx_stopped", tx_stopped),
I40E_VSI_STAT("rx_alloc_fail", rx_buf_failed),
I40E_VSI_STAT("rx_pg_alloc_fail", rx_page_failed),
I40E_VSI_STAT("rx_cache_reuse", rx_page_reuse),

4
drivers/net/ethernet/intel/i40e/i40e_main.c
View File

@ -785,6 +785,7 @@ static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
unsigned int start;
u64 tx_linearize;
u64 tx_force_wb;
u64 tx_stopped;
u64 rx_p, rx_b;
u64 tx_p, tx_b;
u16 q;
@ -804,6 +805,7 @@ static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
rx_b = rx_p = 0;
tx_b = tx_p = 0;
tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
tx_stopped = 0;
rx_page = 0;
rx_buf = 0;
rx_reuse = 0;
@ -828,6 +830,7 @@ static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
tx_busy += p->tx_stats.tx_busy;
tx_linearize += p->tx_stats.tx_linearize;
tx_force_wb += p->tx_stats.tx_force_wb;
tx_stopped += p->tx_stats.tx_stopped;
/* locate Rx ring */
p = READ_ONCE(vsi->rx_rings[q]);
@ -872,6 +875,7 @@ static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
vsi->tx_busy = tx_busy;
vsi->tx_linearize = tx_linearize;
vsi->tx_force_wb = tx_force_wb;
vsi->tx_stopped = tx_stopped;
vsi->rx_page_failed = rx_page;
vsi->rx_buf_failed = rx_buf;
vsi->rx_page_reuse = rx_reuse;

2
drivers/net/ethernet/intel/i40e/i40e_txrx.c
View File

@ -3396,6 +3396,8 @@ int __i40e_maybe_stop_tx(struct i40e_ring *tx_ring, int size)
/* Memory barrier before checking head and tail */
smp_mb();
++tx_ring->tx_stats.tx_stopped;
/* Check again in a case another CPU has just made room available. */
if (likely(I40E_DESC_UNUSED(tx_ring) < size))
return -EBUSY;

1
drivers/net/ethernet/intel/i40e/i40e_txrx.h
View File

@ -290,6 +290,7 @@ struct i40e_tx_queue_stats {
u64 tx_done_old;
u64 tx_linearize;
u64 tx_force_wb;
u64 tx_stopped;
int prev_pkt_ctr;
};