From 568d7a001bd5612a280e1026cce7e6e2e16b7687 Mon Sep 17 00:00:00 2001 From: Edward Cree Date: Wed, 25 Sep 2013 17:32:09 +0100 Subject: [PATCH] sfc: Add PM and RXDP drop counters to ethtool stats Recognise the new Packet Memory and RX Data Path counters. The following counters are added: rx_pm_{trunc,discard}_bb_overflow - burst buffer overflowed. This should not occur if BB correctly configured. rx_pm_{trunc,discard}_vfifo_full - not enough space in packet memory. May indicate RX performance problems. rx_pm_{trunc,discard}_qbb - dropped by 802.1Qbb early discard mechanism. Since Qbb is not supported at present, this should not occur. rx_pm_discard_mapping - 802.1p priority configured to be dropped. This should not occur in normal operation. rx_dp_q_disabled_packets - packet was to be delivered to a queue but queue is disabled. May indicate misconfiguration by the driver. rx_dp_di_dropped_packets - parser-dispatcher indicated that a packet should be dropped. rx_dp_streaming_packets - packet was sent to the RXDP streaming bus, ie. a filter directed the packet to the MCPU. rx_dp_emerg_{fetch,wait} - RX datapath had to wait for descriptors to be loaded. Indicates performance problems but not drops. These are only provided if the MC firmware has the PM_AND_RXDP_COUNTERS capability. Otherwise, mask them out. Signed-off-by: Ben Hutchings --- drivers/net/ethernet/sfc/ef10.c | 35 +++++++++++++++++++++++++++++++++++ drivers/net/ethernet/sfc/nic.h | 12 ++++++++++++ 2 files changed, 47 insertions(+) diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c index c00a5d6..21f9ad6 100644 --- a/drivers/net/ethernet/sfc/ef10.c +++ b/drivers/net/ethernet/sfc/ef10.c @@ -444,6 +444,18 @@ static const struct efx_hw_stat_desc efx_ef10_stat_desc[EF10_STAT_COUNT] = { EF10_DMA_STAT(rx_align_error, RX_ALIGN_ERROR_PKTS), EF10_DMA_STAT(rx_length_error, RX_LENGTH_ERROR_PKTS), EF10_DMA_STAT(rx_nodesc_drops, RX_NODESC_DROPS), + EF10_DMA_STAT(rx_pm_trunc_bb_overflow, PM_TRUNC_BB_OVERFLOW), + EF10_DMA_STAT(rx_pm_discard_bb_overflow, PM_DISCARD_BB_OVERFLOW), + EF10_DMA_STAT(rx_pm_trunc_vfifo_full, PM_TRUNC_VFIFO_FULL), + EF10_DMA_STAT(rx_pm_discard_vfifo_full, PM_DISCARD_VFIFO_FULL), + EF10_DMA_STAT(rx_pm_trunc_qbb, PM_TRUNC_QBB), + EF10_DMA_STAT(rx_pm_discard_qbb, PM_DISCARD_QBB), + EF10_DMA_STAT(rx_pm_discard_mapping, PM_DISCARD_MAPPING), + EF10_DMA_STAT(rx_dp_q_disabled_packets, RXDP_Q_DISABLED_PKTS), + EF10_DMA_STAT(rx_dp_di_dropped_packets, RXDP_DI_DROPPED_PKTS), + EF10_DMA_STAT(rx_dp_streaming_packets, RXDP_STREAMING_PKTS), + EF10_DMA_STAT(rx_dp_emerg_fetch, RXDP_EMERGENCY_FETCH_CONDITIONS), + EF10_DMA_STAT(rx_dp_emerg_wait, RXDP_EMERGENCY_WAIT_CONDITIONS), }; #define HUNT_COMMON_STAT_MASK ((1ULL << EF10_STAT_tx_bytes) | \ @@ -498,15 +510,38 @@ static const struct efx_hw_stat_desc efx_ef10_stat_desc[EF10_STAT_COUNT] = { #define HUNT_40G_EXTRA_STAT_MASK ((1ULL << EF10_STAT_rx_align_error) | \ (1ULL << EF10_STAT_rx_length_error)) +/* These statistics are only provided if the firmware supports the + * capability PM_AND_RXDP_COUNTERS. + */ +#define HUNT_PM_AND_RXDP_STAT_MASK ( \ + (1ULL << EF10_STAT_rx_pm_trunc_bb_overflow) | \ + (1ULL << EF10_STAT_rx_pm_discard_bb_overflow) | \ + (1ULL << EF10_STAT_rx_pm_trunc_vfifo_full) | \ + (1ULL << EF10_STAT_rx_pm_discard_vfifo_full) | \ + (1ULL << EF10_STAT_rx_pm_trunc_qbb) | \ + (1ULL << EF10_STAT_rx_pm_discard_qbb) | \ + (1ULL << EF10_STAT_rx_pm_discard_mapping) | \ + (1ULL << EF10_STAT_rx_dp_q_disabled_packets) | \ + (1ULL << EF10_STAT_rx_dp_di_dropped_packets) | \ + (1ULL << EF10_STAT_rx_dp_streaming_packets) | \ + (1ULL << EF10_STAT_rx_dp_emerg_fetch) | \ + (1ULL << EF10_STAT_rx_dp_emerg_wait)) + static u64 efx_ef10_raw_stat_mask(struct efx_nic *efx) { u64 raw_mask = HUNT_COMMON_STAT_MASK; u32 port_caps = efx_mcdi_phy_get_caps(efx); + struct efx_ef10_nic_data *nic_data = efx->nic_data; if (port_caps & (1 << MC_CMD_PHY_CAP_40000FDX_LBN)) raw_mask |= HUNT_40G_EXTRA_STAT_MASK; else raw_mask |= HUNT_10G_ONLY_STAT_MASK; + + if (nic_data->datapath_caps & + (1 << MC_CMD_GET_CAPABILITIES_OUT_PM_AND_RXDP_COUNTERS_LBN)) + raw_mask |= HUNT_PM_AND_RXDP_STAT_MASK; + return raw_mask; } diff --git a/drivers/net/ethernet/sfc/nic.h b/drivers/net/ethernet/sfc/nic.h index fda29d3..890bbbe 100644 --- a/drivers/net/ethernet/sfc/nic.h +++ b/drivers/net/ethernet/sfc/nic.h @@ -386,6 +386,18 @@ enum { EF10_STAT_rx_align_error, EF10_STAT_rx_length_error, EF10_STAT_rx_nodesc_drops, + EF10_STAT_rx_pm_trunc_bb_overflow, + EF10_STAT_rx_pm_discard_bb_overflow, + EF10_STAT_rx_pm_trunc_vfifo_full, + EF10_STAT_rx_pm_discard_vfifo_full, + EF10_STAT_rx_pm_trunc_qbb, + EF10_STAT_rx_pm_discard_qbb, + EF10_STAT_rx_pm_discard_mapping, + EF10_STAT_rx_dp_q_disabled_packets, + EF10_STAT_rx_dp_di_dropped_packets, + EF10_STAT_rx_dp_streaming_packets, + EF10_STAT_rx_dp_emerg_fetch, + EF10_STAT_rx_dp_emerg_wait, EF10_STAT_COUNT }; -- 2.7.4