From: Michael Chan <michael.chan@broadcom.com>
Date: Mon, 18 Nov 2019 03:56:36 -0500
Subject: bnxt_en: Improve RX buffer error handling.
Patch-mainline: v5.5-rc1
Git-commit: 19b3751ffa713d04290effb26fe01009010f2206
References: jsc#SLE-8371 bsc#1153274
When hardware reports RX buffer errors, the latest 57500 chips do not
require reset. The packet is discarded by the hardware and the
ring will continue to operate.
Also, add an rx_buf_errors counter for this type of error. It can help
the user to identify if the aggregation ring is too small.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 8 ++++++--
drivers/net/ethernet/broadcom/bnxt/bnxt.h | 1 +
drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 2 ++
3 files changed, 9 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -1767,8 +1767,12 @@ static int bnxt_rx_pkt(struct bnxt *bp,
rc = -EIO;
if (rx_err & RX_CMPL_ERRORS_BUFFER_ERROR_MASK) {
- netdev_warn(bp->dev, "RX buffer error %x\n", rx_err);
- bnxt_sched_reset(bp, rxr);
+ bnapi->cp_ring.rx_buf_errors++;
+ if (!(bp->flags & BNXT_FLAG_CHIP_P5)) {
+ netdev_warn(bp->dev, "RX buffer error %x\n",
+ rx_err);
+ bnxt_sched_reset(bp, rxr);
+ }
}
goto next_rx_no_len;
}
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -932,6 +932,7 @@ struct bnxt_cp_ring_info {
dma_addr_t hw_stats_map;
u32 hw_stats_ctx_id;
u64 rx_l4_csum_errors;
+ u64 rx_buf_errors;
u64 missed_irqs;
struct bnxt_ring_struct cp_ring_struct;
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -173,6 +173,7 @@ static const char * const bnxt_ring_tpa2
static const char * const bnxt_ring_sw_stats_str[] = {
"rx_l4_csum_errors",
+ "rx_buf_errors",
"missed_irqs",
};
@@ -552,6 +553,7 @@ static void bnxt_get_ethtool_stats(struc
for (k = 0; k < stat_fields; j++, k++)
buf[j] = le64_to_cpu(hw_stats[k]);
buf[j++] = cpr->rx_l4_csum_errors;
+ buf[j++] = cpr->rx_buf_errors;
buf[j++] = cpr->missed_irqs;
bnxt_sw_func_stats[RX_TOTAL_DISCARDS].counter +=