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sfc: add statistics for ARFS 

Report the number of successful and failed insertions, and also the
 current count of filters, to aid in tuning e.g. rps_flow_cnt.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
This commit is contained in:
Edward Cree 2019-11-22 17:57:27 +00:00 committed by Jakub Kicinski
parent 0aa6608dae
commit ca70bd423f
3 changed files with 12 additions and 0 deletions
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6
drivers/net/ethernet/sfc/ethtool.c
View File

@ -56,6 +56,9 @@ static u64 efx_get_atomic_stat(void *field)
#define EFX_ETHTOOL_UINT_CHANNEL_STAT(field) \
EFX_ETHTOOL_STAT(field, channel, n_##field, \
unsigned int, efx_get_uint_stat)
#define EFX_ETHTOOL_UINT_CHANNEL_STAT_NO_N(field) \
EFX_ETHTOOL_STAT(field, channel, field, \
unsigned int, efx_get_uint_stat)
#define EFX_ETHTOOL_UINT_TXQ_STAT(field) \
EFX_ETHTOOL_STAT(tx_##field, tx_queue, field, \
@ -87,6 +90,9 @@ static const struct efx_sw_stat_desc efx_sw_stat_desc[] = {
EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_xdp_bad_drops),
EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_xdp_tx),
EFX_ETHTOOL_UINT_CHANNEL_STAT(rx_xdp_redirect),
EFX_ETHTOOL_UINT_CHANNEL_STAT_NO_N(rfs_filter_count),
EFX_ETHTOOL_UINT_CHANNEL_STAT(rfs_succeeded),
EFX_ETHTOOL_UINT_CHANNEL_STAT(rfs_failed),
};
#define EFX_ETHTOOL_SW_STAT_COUNT ARRAY_SIZE(efx_sw_stat_desc)

4
drivers/net/ethernet/sfc/net_driver.h
View File

@ -444,6 +444,8 @@ enum efx_sync_events_state {
* @rfs_last_expiry: value of jiffies last time some accelerated RFS filters
* were checked for expiry
* @rfs_expire_index: next accelerated RFS filter ID to check for expiry
* @n_rfs_succeeded: number of successful accelerated RFS filter insertions
* @n_rfs_failed; number of failed accelerated RFS filter insertions
* @filter_work: Work item for efx_filter_rfs_expire()
* @rps_flow_id: Flow IDs of filters allocated for accelerated RFS,
* indexed by filter ID
@ -497,6 +499,8 @@ struct efx_channel {
unsigned int rfs_filter_count;
unsigned int rfs_last_expiry;
unsigned int rfs_expire_index;
unsigned int n_rfs_succeeded;
unsigned int n_rfs_failed;
struct work_struct filter_work;
#define RPS_FLOW_ID_INVALID 0xFFFFFFFF
u32 *rps_flow_id;

2
drivers/net/ethernet/sfc/rx.c
View File

@ -1032,6 +1032,7 @@ static void efx_filter_rfs_work(struct work_struct *data)
req->spec.rem_host, ntohs(req->spec.rem_port),
req->spec.loc_host, ntohs(req->spec.loc_port),
req->rxq_index, req->flow_id, rc, arfs_id);
channel->n_rfs_succeeded++;
} else {
if (req->spec.ether_type == htons(ETH_P_IP))
netif_dbg(efx, rx_status, efx->net_dev,
@ -1047,6 +1048,7 @@ static void efx_filter_rfs_work(struct work_struct *data)
req->spec.rem_host, ntohs(req->spec.rem_port),
req->spec.loc_host, ntohs(req->spec.loc_port),
req->rxq_index, req->flow_id, rc, arfs_id);
channel->n_rfs_failed++;
/* We're overloading the NIC's filter tables, so let's do a
* chunk of extra expiry work.
*/