From: Michael Chan michael.chan@broadcom.com
[ Upstream commit 8e44e96c6c8e8fb80b84a2ca11798a8554f710f2 ]
If the RX completion indicates RX buffers errors, the RX ring will be disabled by firmware and no packets will be received on that ring from that point on. Recover by resetting the device.
Fixes: c0c050c58d84 ("bnxt_en: New Broadcom ethernet driver.") Signed-off-by: Michael Chan michael.chan@broadcom.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 6 ++++++ 1 file changed, 6 insertions(+)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -1400,11 +1400,17 @@ static int bnxt_rx_pkt(struct bnxt *bp,
rx_buf->data = NULL; if (rxcmp1->rx_cmp_cfa_code_errors_v2 & RX_CMP_L2_ERRORS) { + u32 rx_err = le32_to_cpu(rxcmp1->rx_cmp_cfa_code_errors_v2); + bnxt_reuse_rx_data(rxr, cons, data); if (agg_bufs) bnxt_reuse_rx_agg_bufs(bnapi, cp_cons, agg_bufs);
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); + } goto next_rx; }