6.1-stable review patch. If anyone has any objections, please let me know.
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From: Michael Chan michael.chan@broadcom.com
[ Upstream commit 4c70dbe3c0087b439b9e5015057e3e378cf5d8b1 ]
Currently, the ring counters are stored in the per ring datastructure. During reset, all the rings are freed together with the associated datastructures. As a result, all the ring error counters will be reset to zero.
Add logic to keep track of the total error counts of all the rings and save them before reset (including ifdown). The next patch will display these total ring error counters under ethtool -S.
Link: https://lore.kernel.org/netdev/CACKFLimD-bKmJ1tGZOLYRjWzEwxkri-Mw7iFme1x2Dr0... Reviewed-by: Ajit Khaparde ajit.khaparde@broadcom.com Reviewed-by: Andy Gospodarek andrew.gospodarek@broadcom.com Reviewed-by: Somnath Kotur somnath.kotur@broadcom.com Signed-off-by: Michael Chan michael.chan@broadcom.com Link: https://lore.kernel.org/r/20230817231911.165035-5-michael.chan@broadcom.com Signed-off-by: Jakub Kicinski kuba@kernel.org Stable-dep-of: bd6781c18cb5 ("bnxt_en: Fix wrong return value check in bnxt_close_nic()") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 32 ++++++++++++++++++++++- drivers/net/ethernet/broadcom/bnxt/bnxt.h | 15 +++++++++++ 2 files changed, 46 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 44d88bc1fcbd6..1d2836373df97 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -10708,8 +10708,10 @@ static void __bnxt_close_nic(struct bnxt *bp, bool irq_re_init, bnxt_free_skbs(bp);
/* Save ring stats before shutdown */ - if (bp->bnapi && irq_re_init) + if (bp->bnapi && irq_re_init) { bnxt_get_ring_stats(bp, &bp->net_stats_prev); + bnxt_get_ring_err_stats(bp, &bp->ring_err_stats_prev); + } if (irq_re_init) { bnxt_free_irq(bp); bnxt_del_napi(bp); @@ -10958,6 +10960,34 @@ bnxt_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats) clear_bit(BNXT_STATE_READ_STATS, &bp->state); }
+static void bnxt_get_one_ring_err_stats(struct bnxt *bp, + struct bnxt_total_ring_err_stats *stats, + struct bnxt_cp_ring_info *cpr) +{ + struct bnxt_sw_stats *sw_stats = &cpr->sw_stats; + u64 *hw_stats = cpr->stats.sw_stats; + + stats->rx_total_l4_csum_errors += sw_stats->rx.rx_l4_csum_errors; + stats->rx_total_resets += sw_stats->rx.rx_resets; + stats->rx_total_buf_errors += sw_stats->rx.rx_buf_errors; + stats->rx_total_oom_discards += sw_stats->rx.rx_oom_discards; + stats->rx_total_netpoll_discards += sw_stats->rx.rx_netpoll_discards; + stats->rx_total_ring_discards += + BNXT_GET_RING_STATS64(hw_stats, rx_discard_pkts); + stats->tx_total_ring_discards += + BNXT_GET_RING_STATS64(hw_stats, tx_discard_pkts); + stats->total_missed_irqs += sw_stats->cmn.missed_irqs; +} + +void bnxt_get_ring_err_stats(struct bnxt *bp, + struct bnxt_total_ring_err_stats *stats) +{ + int i; + + for (i = 0; i < bp->cp_nr_rings; i++) + bnxt_get_one_ring_err_stats(bp, stats, &bp->bnapi[i]->cp_ring); +} + static bool bnxt_mc_list_updated(struct bnxt *bp, u32 *rx_mask) { struct net_device *dev = bp->dev; diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index 1d2588c92977e..c872cf1bc8783 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -950,6 +950,17 @@ struct bnxt_sw_stats { struct bnxt_cmn_sw_stats cmn; };
+struct bnxt_total_ring_err_stats { + u64 rx_total_l4_csum_errors; + u64 rx_total_resets; + u64 rx_total_buf_errors; + u64 rx_total_oom_discards; + u64 rx_total_netpoll_discards; + u64 rx_total_ring_discards; + u64 tx_total_ring_discards; + u64 total_missed_irqs; +}; + struct bnxt_stats_mem { u64 *sw_stats; u64 *hw_masks; @@ -2007,6 +2018,8 @@ struct bnxt { u8 pri2cos_idx[8]; u8 pri2cos_valid;
+ struct bnxt_total_ring_err_stats ring_err_stats_prev; + u16 hwrm_max_req_len; u16 hwrm_max_ext_req_len; unsigned int hwrm_cmd_timeout; @@ -2331,6 +2344,8 @@ int bnxt_half_open_nic(struct bnxt *bp); void bnxt_half_close_nic(struct bnxt *bp); void bnxt_reenable_sriov(struct bnxt *bp); int bnxt_close_nic(struct bnxt *, bool, bool); +void bnxt_get_ring_err_stats(struct bnxt *bp, + struct bnxt_total_ring_err_stats *stats); int bnxt_dbg_hwrm_rd_reg(struct bnxt *bp, u32 reg_off, u16 num_words, u32 *reg_buf); void bnxt_fw_exception(struct bnxt *bp);