[Intel-wired-lan] [net-queue, v2, 2/5] i40e: Aggregate and export RX page reuse stat.
Joe Damato
jdamato at fastly.com
Fri Dec 17 19:35:16 UTC 2021
rx page reuse was already being tracked by the i40e driver per RX ring.
Aggregate the counts and make them accessible via ethtool.
Signed-off-by: Joe Damato <jdamato at fastly.com>
---
drivers/net/ethernet/intel/i40e/i40e.h | 1 +
drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 1 +
drivers/net/ethernet/intel/i40e/i40e_main.c | 5 ++++-
3 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/i40e/i40e.h b/drivers/net/ethernet/intel/i40e/i40e.h
index 7f40f87..b61f17bf 100644
--- a/drivers/net/ethernet/intel/i40e/i40e.h
+++ b/drivers/net/ethernet/intel/i40e/i40e.h
@@ -853,6 +853,7 @@ struct i40e_vsi {
u64 tx_force_wb;
u64 rx_buf_failed;
u64 rx_page_failed;
+ u64 rx_page_reuse;
/* These are containers of ring pointers, allocated at run-time */
struct i40e_ring **rx_rings;
diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
index 513ba69..ceb0d5f 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c
@@ -295,6 +295,7 @@ static const struct i40e_stats i40e_gstrings_misc_stats[] = {
I40E_VSI_STAT("tx_busy", tx_busy),
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),
};
/* These PF_STATs might look like duplicates of some NETDEV_STATs,
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 4ff1c9b..6d3b0bc 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -812,7 +812,7 @@ static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
struct i40e_eth_stats *es; /* device's eth stats */
u64 tx_restart, tx_busy;
struct i40e_ring *p;
- u64 rx_page, rx_buf;
+ u64 rx_page, rx_buf, rx_reuse;
u64 bytes, packets;
unsigned int start;
u64 tx_linearize;
@@ -838,6 +838,7 @@ static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
rx_page = 0;
rx_buf = 0;
+ rx_reuse = 0;
rcu_read_lock();
for (q = 0; q < vsi->num_queue_pairs; q++) {
/* locate Tx ring */
@@ -871,6 +872,7 @@ static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
rx_p += packets;
rx_buf += p->rx_stats.alloc_buff_failed;
rx_page += p->rx_stats.alloc_page_failed;
+ rx_reuse += p->rx_stats.page_reuse_count;
if (i40e_enabled_xdp_vsi(vsi)) {
/* locate XDP ring */
@@ -898,6 +900,7 @@ static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
vsi->tx_force_wb = tx_force_wb;
vsi->rx_page_failed = rx_page;
vsi->rx_buf_failed = rx_buf;
+ vsi->rx_page_reuse = rx_reuse;
ns->rx_packets = rx_p;
ns->rx_bytes = rx_b;
--
2.7.4
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