From 2c0b6ee837dba6034ace78fcc58d2bc4f5d063c1 Mon Sep 17 00:00:00 2001 From: Bert Kenward Date: Thu, 21 Dec 2017 09:00:41 +0000 Subject: sfc: expose CTPIO stats on NICs that support them While the Linux driver doesn't use CTPIO ('cut-through programmed I/O'), other drivers on the same port might, so if we're responsible for reporting per-port stats we need to include the CTPIO stats. Signed-off-by: Bert Kenward Signed-off-by: Edward Cree Signed-off-by: David S. Miller --- drivers/net/ethernet/sfc/ef10.c | 50 +++++++++++++++++++++++++++++++++++++++++ drivers/net/ethernet/sfc/nic.h | 17 ++++++++++++++ 2 files changed, 67 insertions(+) (limited to 'drivers') diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c index 352ca43a7395..8ae467db9162 100644 --- a/drivers/net/ethernet/sfc/ef10.c +++ b/drivers/net/ethernet/sfc/ef10.c @@ -1649,6 +1649,23 @@ static const struct efx_hw_stat_desc efx_ef10_stat_desc[EF10_STAT_COUNT] = { EF10_DMA_STAT(fec_corrected_symbols_lane1, FEC_CORRECTED_SYMBOLS_LANE1), EF10_DMA_STAT(fec_corrected_symbols_lane2, FEC_CORRECTED_SYMBOLS_LANE2), EF10_DMA_STAT(fec_corrected_symbols_lane3, FEC_CORRECTED_SYMBOLS_LANE3), + EF10_DMA_STAT(ctpio_dmabuf_start, CTPIO_DMABUF_START), + EF10_DMA_STAT(ctpio_vi_busy_fallback, CTPIO_VI_BUSY_FALLBACK), + EF10_DMA_STAT(ctpio_long_write_success, CTPIO_LONG_WRITE_SUCCESS), + EF10_DMA_STAT(ctpio_missing_dbell_fail, CTPIO_MISSING_DBELL_FAIL), + EF10_DMA_STAT(ctpio_overflow_fail, CTPIO_OVERFLOW_FAIL), + EF10_DMA_STAT(ctpio_underflow_fail, CTPIO_UNDERFLOW_FAIL), + EF10_DMA_STAT(ctpio_timeout_fail, CTPIO_TIMEOUT_FAIL), + EF10_DMA_STAT(ctpio_noncontig_wr_fail, CTPIO_NONCONTIG_WR_FAIL), + EF10_DMA_STAT(ctpio_frm_clobber_fail, CTPIO_FRM_CLOBBER_FAIL), + EF10_DMA_STAT(ctpio_invalid_wr_fail, CTPIO_INVALID_WR_FAIL), + EF10_DMA_STAT(ctpio_vi_clobber_fallback, CTPIO_VI_CLOBBER_FALLBACK), + EF10_DMA_STAT(ctpio_unqualified_fallback, CTPIO_UNQUALIFIED_FALLBACK), + EF10_DMA_STAT(ctpio_runt_fallback, CTPIO_RUNT_FALLBACK), + EF10_DMA_STAT(ctpio_success, CTPIO_SUCCESS), + EF10_DMA_STAT(ctpio_fallback, CTPIO_FALLBACK), + EF10_DMA_STAT(ctpio_poison, CTPIO_POISON), + EF10_DMA_STAT(ctpio_erase, CTPIO_ERASE), }; #define HUNT_COMMON_STAT_MASK ((1ULL << EF10_STAT_port_tx_bytes) | \ @@ -1737,6 +1754,30 @@ static const struct efx_hw_stat_desc efx_ef10_stat_desc[EF10_STAT_COUNT] = { (1ULL << (EF10_STAT_fec_corrected_symbols_lane2 - 64)) | \ (1ULL << (EF10_STAT_fec_corrected_symbols_lane3 - 64))) +/* These statistics are only provided if the NIC supports MC_CMD_MAC_STATS_V3, + * indicated by returning a value >= MC_CMD_MAC_NSTATS_V3 in + * MC_CMD_GET_CAPABILITIES_V4_OUT_MAC_STATS_NUM_STATS. + * These bits are in the second u64 of the raw mask. + */ +#define EF10_CTPIO_STAT_MASK ( \ + (1ULL << (EF10_STAT_ctpio_dmabuf_start - 64)) | \ + (1ULL << (EF10_STAT_ctpio_vi_busy_fallback - 64)) | \ + (1ULL << (EF10_STAT_ctpio_long_write_success - 64)) | \ + (1ULL << (EF10_STAT_ctpio_missing_dbell_fail - 64)) | \ + (1ULL << (EF10_STAT_ctpio_overflow_fail - 64)) | \ + (1ULL << (EF10_STAT_ctpio_underflow_fail - 64)) | \ + (1ULL << (EF10_STAT_ctpio_timeout_fail - 64)) | \ + (1ULL << (EF10_STAT_ctpio_noncontig_wr_fail - 64)) | \ + (1ULL << (EF10_STAT_ctpio_frm_clobber_fail - 64)) | \ + (1ULL << (EF10_STAT_ctpio_invalid_wr_fail - 64)) | \ + (1ULL << (EF10_STAT_ctpio_vi_clobber_fallback - 64)) | \ + (1ULL << (EF10_STAT_ctpio_unqualified_fallback - 64)) | \ + (1ULL << (EF10_STAT_ctpio_runt_fallback - 64)) | \ + (1ULL << (EF10_STAT_ctpio_success - 64)) | \ + (1ULL << (EF10_STAT_ctpio_fallback - 64)) | \ + (1ULL << (EF10_STAT_ctpio_poison - 64)) | \ + (1ULL << (EF10_STAT_ctpio_erase - 64))) + static u64 efx_ef10_raw_stat_mask(struct efx_nic *efx) { u64 raw_mask = HUNT_COMMON_STAT_MASK; @@ -1783,6 +1824,15 @@ static void efx_ef10_get_stat_mask(struct efx_nic *efx, unsigned long *mask) if (efx->num_mac_stats >= MC_CMD_MAC_NSTATS_V2) raw_mask[1] |= EF10_FEC_STAT_MASK; + /* CTPIO stats appear in V3. Only show them on devices that actually + * support CTPIO. Although this driver doesn't use CTPIO others might, + * and we may be reporting the stats for the underlying port. + */ + if (efx->num_mac_stats >= MC_CMD_MAC_NSTATS_V3 && + (nic_data->datapath_caps2 & + (1 << MC_CMD_GET_CAPABILITIES_V4_OUT_CTPIO_LBN))) + raw_mask[1] |= EF10_CTPIO_STAT_MASK; + #if BITS_PER_LONG == 64 BUILD_BUG_ON(BITS_TO_LONGS(EF10_STAT_COUNT) != 2); mask[0] = raw_mask[0]; diff --git a/drivers/net/ethernet/sfc/nic.h b/drivers/net/ethernet/sfc/nic.h index e39e7b399252..763052214525 100644 --- a/drivers/net/ethernet/sfc/nic.h +++ b/drivers/net/ethernet/sfc/nic.h @@ -332,6 +332,23 @@ enum { EF10_STAT_fec_corrected_symbols_lane1, EF10_STAT_fec_corrected_symbols_lane2, EF10_STAT_fec_corrected_symbols_lane3, + EF10_STAT_ctpio_dmabuf_start, + EF10_STAT_ctpio_vi_busy_fallback, + EF10_STAT_ctpio_long_write_success, + EF10_STAT_ctpio_missing_dbell_fail, + EF10_STAT_ctpio_overflow_fail, + EF10_STAT_ctpio_underflow_fail, + EF10_STAT_ctpio_timeout_fail, + EF10_STAT_ctpio_noncontig_wr_fail, + EF10_STAT_ctpio_frm_clobber_fail, + EF10_STAT_ctpio_invalid_wr_fail, + EF10_STAT_ctpio_vi_clobber_fallback, + EF10_STAT_ctpio_unqualified_fallback, + EF10_STAT_ctpio_runt_fallback, + EF10_STAT_ctpio_success, + EF10_STAT_ctpio_fallback, + EF10_STAT_ctpio_poison, + EF10_STAT_ctpio_erase, EF10_STAT_COUNT }; -- cgit v1.2.3