diff options
Diffstat (limited to 'drivers/net/ethernet/sfc')
| -rw-r--r-- | drivers/net/ethernet/sfc/ef10.c | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/sfc/efx.c | 11 | ||||
| -rw-r--r-- | drivers/net/ethernet/sfc/falcon.c | 10 | ||||
| -rw-r--r-- | drivers/net/ethernet/sfc/mcdi.h | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/sfc/mcdi_port.c | 49 | ||||
| -rw-r--r-- | drivers/net/ethernet/sfc/net_driver.h | 5 | ||||
| -rw-r--r-- | drivers/net/ethernet/sfc/nic.c | 12 | ||||
| -rw-r--r-- | drivers/net/ethernet/sfc/nic.h | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/sfc/siena.c | 3 |
9 files changed, 83 insertions, 11 deletions
diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c index e9c546bdbdfe..c1b85edcb204 100644 --- a/drivers/net/ethernet/sfc/ef10.c +++ b/drivers/net/ethernet/sfc/ef10.c @@ -902,6 +902,7 @@ static int efx_ef10_try_update_nic_stats(struct efx_nic *efx) return -EAGAIN; /* Update derived statistics */ + efx_nic_fix_nodesc_drop_stat(efx, &stats[EF10_STAT_rx_nodesc_drops]); stats[EF10_STAT_rx_good_bytes] = stats[EF10_STAT_rx_bytes] - stats[EF10_STAT_rx_bytes_minus_good_bytes]; @@ -3423,6 +3424,7 @@ const struct efx_nic_type efx_hunt_a0_nic_type = { .describe_stats = efx_ef10_describe_stats, .update_stats = efx_ef10_update_stats, .start_stats = efx_mcdi_mac_start_stats, + .pull_stats = efx_mcdi_mac_pull_stats, .stop_stats = efx_mcdi_mac_stop_stats, .set_id_led = efx_mcdi_set_id_led, .push_irq_moderation = efx_ef10_push_irq_moderation, diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c index 5e2454d07137..c734fba8c99c 100644 --- a/drivers/net/ethernet/sfc/efx.c +++ b/drivers/net/ethernet/sfc/efx.c @@ -1684,6 +1684,10 @@ static void efx_start_all(struct efx_nic *efx) } efx->type->start_stats(efx); + efx->type->pull_stats(efx); + spin_lock_bh(&efx->stats_lock); + efx->type->update_stats(efx, NULL, NULL); + spin_unlock_bh(&efx->stats_lock); } /* Flush all delayed work. Should only be called when no more delayed work @@ -1711,6 +1715,13 @@ static void efx_stop_all(struct efx_nic *efx) if (!efx->port_enabled) return; + /* update stats before we go down so we can accurately count + * rx_nodesc_drops + */ + efx->type->pull_stats(efx); + spin_lock_bh(&efx->stats_lock); + efx->type->update_stats(efx, NULL, NULL); + spin_unlock_bh(&efx->stats_lock); efx->type->stop_stats(efx); efx_stop_port(efx); diff --git a/drivers/net/ethernet/sfc/falcon.c b/drivers/net/ethernet/sfc/falcon.c index ff5d322b9b49..4a9e05c82e2a 100644 --- a/drivers/net/ethernet/sfc/falcon.c +++ b/drivers/net/ethernet/sfc/falcon.c @@ -2593,6 +2593,14 @@ void falcon_start_nic_stats(struct efx_nic *efx) spin_unlock_bh(&efx->stats_lock); } +/* We don't acutally pull stats on falcon. Wait 10ms so that + * they arrive when we call this just after start_stats + */ +void falcon_pull_nic_stats(struct efx_nic *efx) +{ + msleep(10); +} + void falcon_stop_nic_stats(struct efx_nic *efx) { struct falcon_nic_data *nic_data = efx->nic_data; @@ -2672,6 +2680,7 @@ const struct efx_nic_type falcon_a1_nic_type = { .describe_stats = falcon_describe_nic_stats, .update_stats = falcon_update_nic_stats, .start_stats = falcon_start_nic_stats, + .pull_stats = falcon_pull_nic_stats, .stop_stats = falcon_stop_nic_stats, .set_id_led = falcon_set_id_led, .push_irq_moderation = falcon_push_irq_moderation, @@ -2765,6 +2774,7 @@ const struct efx_nic_type falcon_b0_nic_type = { .describe_stats = falcon_describe_nic_stats, .update_stats = falcon_update_nic_stats, .start_stats = falcon_start_nic_stats, + .pull_stats = falcon_pull_nic_stats, .stop_stats = falcon_stop_nic_stats, .set_id_led = falcon_set_id_led, .push_irq_moderation = falcon_push_irq_moderation, diff --git a/drivers/net/ethernet/sfc/mcdi.h b/drivers/net/ethernet/sfc/mcdi.h index 15816cacb548..d861628b7ee6 100644 --- a/drivers/net/ethernet/sfc/mcdi.h +++ b/drivers/net/ethernet/sfc/mcdi.h @@ -301,6 +301,7 @@ int efx_mcdi_set_mac(struct efx_nic *efx); #define EFX_MC_STATS_GENERATION_INVALID ((__force __le64)(-1)) void efx_mcdi_mac_start_stats(struct efx_nic *efx); void efx_mcdi_mac_stop_stats(struct efx_nic *efx); +void efx_mcdi_mac_pull_stats(struct efx_nic *efx); bool efx_mcdi_mac_check_fault(struct efx_nic *efx); enum reset_type efx_mcdi_map_reset_reason(enum reset_type reason); int efx_mcdi_reset(struct efx_nic *efx, enum reset_type method); diff --git a/drivers/net/ethernet/sfc/mcdi_port.c b/drivers/net/ethernet/sfc/mcdi_port.c index 7b6be61d549f..7288aefc2877 100644 --- a/drivers/net/ethernet/sfc/mcdi_port.c +++ b/drivers/net/ethernet/sfc/mcdi_port.c @@ -927,12 +927,23 @@ bool efx_mcdi_mac_check_fault(struct efx_nic *efx) return MCDI_DWORD(outbuf, GET_LINK_OUT_MAC_FAULT) != 0; } -static int efx_mcdi_mac_stats(struct efx_nic *efx, dma_addr_t dma_addr, - u32 dma_len, int enable, int clear) +enum efx_stats_action { + EFX_STATS_ENABLE, + EFX_STATS_DISABLE, + EFX_STATS_PULL, +}; + +static int efx_mcdi_mac_stats(struct efx_nic *efx, + enum efx_stats_action action, int clear) { MCDI_DECLARE_BUF(inbuf, MC_CMD_MAC_STATS_IN_LEN); int rc; - int period = enable ? 1000 : 0; + int change = action == EFX_STATS_PULL ? 0 : 1; + int enable = action == EFX_STATS_ENABLE ? 1 : 0; + int period = action == EFX_STATS_ENABLE ? 1000 : 0; + dma_addr_t dma_addr = efx->stats_buffer.dma_addr; + u32 dma_len = action != EFX_STATS_DISABLE ? + MC_CMD_MAC_NSTATS * sizeof(u64) : 0; BUILD_BUG_ON(MC_CMD_MAC_STATS_OUT_DMA_LEN != 0); @@ -940,8 +951,8 @@ static int efx_mcdi_mac_stats(struct efx_nic *efx, dma_addr_t dma_addr, MCDI_POPULATE_DWORD_7(inbuf, MAC_STATS_IN_CMD, MAC_STATS_IN_DMA, !!enable, MAC_STATS_IN_CLEAR, clear, - MAC_STATS_IN_PERIODIC_CHANGE, 1, - MAC_STATS_IN_PERIODIC_ENABLE, !!enable, + MAC_STATS_IN_PERIODIC_CHANGE, change, + MAC_STATS_IN_PERIODIC_ENABLE, enable, MAC_STATS_IN_PERIODIC_CLEAR, 0, MAC_STATS_IN_PERIODIC_NOEVENT, 1, MAC_STATS_IN_PERIOD_MS, period); @@ -955,8 +966,8 @@ static int efx_mcdi_mac_stats(struct efx_nic *efx, dma_addr_t dma_addr, return 0; fail: - netif_err(efx, hw, efx->net_dev, "%s: %s failed rc=%d\n", - __func__, enable ? "enable" : "disable", rc); + netif_err(efx, hw, efx->net_dev, "%s: action %d failed rc=%d\n", + __func__, action, rc); return rc; } @@ -966,13 +977,29 @@ void efx_mcdi_mac_start_stats(struct efx_nic *efx) dma_stats[MC_CMD_MAC_GENERATION_END] = EFX_MC_STATS_GENERATION_INVALID; - efx_mcdi_mac_stats(efx, efx->stats_buffer.dma_addr, - MC_CMD_MAC_NSTATS * sizeof(u64), 1, 0); + efx_mcdi_mac_stats(efx, EFX_STATS_ENABLE, 0); } void efx_mcdi_mac_stop_stats(struct efx_nic *efx) { - efx_mcdi_mac_stats(efx, efx->stats_buffer.dma_addr, 0, 0, 0); + efx_mcdi_mac_stats(efx, EFX_STATS_DISABLE, 0); +} + +#define EFX_MAC_STATS_WAIT_US 100 +#define EFX_MAC_STATS_WAIT_ATTEMPTS 10 + +void efx_mcdi_mac_pull_stats(struct efx_nic *efx) +{ + __le64 *dma_stats = efx->stats_buffer.addr; + int attempts = EFX_MAC_STATS_WAIT_ATTEMPTS; + + dma_stats[MC_CMD_MAC_GENERATION_END] = EFX_MC_STATS_GENERATION_INVALID; + efx_mcdi_mac_stats(efx, EFX_STATS_PULL, 0); + + while (dma_stats[MC_CMD_MAC_GENERATION_END] == + EFX_MC_STATS_GENERATION_INVALID && + attempts-- != 0) + udelay(EFX_MAC_STATS_WAIT_US); } int efx_mcdi_port_probe(struct efx_nic *efx) @@ -1003,7 +1030,7 @@ int efx_mcdi_port_probe(struct efx_nic *efx) efx->stats_buffer.addr, (u64)virt_to_phys(efx->stats_buffer.addr)); - efx_mcdi_mac_stats(efx, efx->stats_buffer.dma_addr, 0, 0, 1); + efx_mcdi_mac_stats(efx, EFX_STATS_DISABLE, 1); return 0; } diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h index d98b3f031ab5..f47bac78b92c 100644 --- a/drivers/net/ethernet/sfc/net_driver.h +++ b/drivers/net/ethernet/sfc/net_driver.h @@ -857,6 +857,9 @@ struct efx_nic { struct net_device *net_dev; struct efx_buffer stats_buffer; + u64 rx_nodesc_drops_total; + u64 rx_nodesc_drops_while_down; + bool rx_nodesc_drops_prev_state; unsigned int phy_type; const struct efx_phy_operations *phy_op; @@ -960,6 +963,7 @@ struct efx_mtd_partition { * @update_stats: Update statistics not provided by event handling. * Either argument may be %NULL. * @start_stats: Start the regular fetching of statistics + * @pull_stats: Pull stats from the NIC and wait until they arrive. * @stop_stats: Stop the regular fetching of statistics * @set_id_led: Set state of identifying LED or revert to automatic function * @push_irq_moderation: Apply interrupt moderation value @@ -1078,6 +1082,7 @@ struct efx_nic_type { size_t (*update_stats)(struct efx_nic *efx, u64 *full_stats, struct rtnl_link_stats64 *core_stats); void (*start_stats)(struct efx_nic *efx); + void (*pull_stats)(struct efx_nic *efx); void (*stop_stats)(struct efx_nic *efx); void (*set_id_led)(struct efx_nic *efx, enum efx_led_mode mode); void (*push_irq_moderation)(struct efx_channel *channel); diff --git a/drivers/net/ethernet/sfc/nic.c b/drivers/net/ethernet/sfc/nic.c index 9c90bf56090f..79226b19e3c4 100644 --- a/drivers/net/ethernet/sfc/nic.c +++ b/drivers/net/ethernet/sfc/nic.c @@ -519,3 +519,15 @@ void efx_nic_update_stats(const struct efx_hw_stat_desc *desc, size_t count, } } } + +void efx_nic_fix_nodesc_drop_stat(struct efx_nic *efx, u64 *rx_nodesc_drops) +{ + /* if down, or this is the first update after coming up */ + if (!(efx->net_dev->flags & IFF_UP) || !efx->rx_nodesc_drops_prev_state) + efx->rx_nodesc_drops_while_down += + *rx_nodesc_drops - efx->rx_nodesc_drops_total; + efx->rx_nodesc_drops_total = *rx_nodesc_drops; + efx->rx_nodesc_drops_prev_state = !!(efx->net_dev->flags & IFF_UP); + *rx_nodesc_drops -= efx->rx_nodesc_drops_while_down; +} + diff --git a/drivers/net/ethernet/sfc/nic.h b/drivers/net/ethernet/sfc/nic.h index fe71e81ee8bf..7ac9c000696f 100644 --- a/drivers/net/ethernet/sfc/nic.h +++ b/drivers/net/ethernet/sfc/nic.h @@ -775,6 +775,7 @@ size_t efx_nic_describe_stats(const struct efx_hw_stat_desc *desc, size_t count, void efx_nic_update_stats(const struct efx_hw_stat_desc *desc, size_t count, const unsigned long *mask, u64 *stats, const void *dma_buf, bool accumulate); +void efx_nic_fix_nodesc_drop_stat(struct efx_nic *efx, u64 *stat); #define EFX_MAX_FLUSH_TIME 5000 diff --git a/drivers/net/ethernet/sfc/siena.c b/drivers/net/ethernet/sfc/siena.c index d034bcd124ef..f2a7ad4c76aa 100644 --- a/drivers/net/ethernet/sfc/siena.c +++ b/drivers/net/ethernet/sfc/siena.c @@ -458,6 +458,8 @@ static int siena_try_update_nic_stats(struct efx_nic *efx) return -EAGAIN; /* Update derived statistics */ + efx_nic_fix_nodesc_drop_stat(efx, + &stats[SIENA_STAT_rx_nodesc_drop_cnt]); efx_update_diff_stat(&stats[SIENA_STAT_tx_good_bytes], stats[SIENA_STAT_tx_bytes] - stats[SIENA_STAT_tx_bad_bytes]); @@ -878,6 +880,7 @@ const struct efx_nic_type siena_a0_nic_type = { .describe_stats = siena_describe_nic_stats, .update_stats = siena_update_nic_stats, .start_stats = efx_mcdi_mac_start_stats, + .pull_stats = efx_mcdi_mac_pull_stats, .stop_stats = efx_mcdi_mac_stop_stats, .set_id_led = efx_mcdi_set_id_led, .push_irq_moderation = siena_push_irq_moderation, |