netdev - [PATCH net-next 5/7] bnxt_en: Set BNXT_STATE_FW_RESET

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Message-Id: <1616396925-16596-6-git-send-email-michael.chan@broadcom.com>
Date:   Mon, 22 Mar 2021 03:08:43 -0400
From:   Michael Chan <michael.chan@...adcom.com>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, kuba@...nel.org, gospo@...adcom.com
Subject: [PATCH net-next 5/7] bnxt_en: Set BNXT_STATE_FW_RESET_DET flag earlier for the RDMA driver.

During ifup, if the driver detects that firmware has gone through a
reset, it will go through a re-probe sequence.  If the RDMA driver is
loaded, the re-probe sequence includes calling the RDMA driver to stop.
We need to set the BNXT_STATE_FW_RESET_DET flag earlier so that it is
visible to the RDMA driver.  The RDMA driver's stop sequence is
different if firmware has gone through a reset.

Reviewed-by: Pavan Chebbi <pavan.chebbi@...adcom.com>
Reviewed-by: P B S Naresh Kumar <nareshkumar.pbs@...adcom.com>
Signed-off-by: Michael Chan <michael.chan@...adcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 7f40dd7d847d..edbe5982cf41 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -9611,6 +9611,7 @@ static int bnxt_hwrm_if_change(struct bnxt *bp, bool up)
 	}
 	if (resc_reinit || fw_reset) {
 		if (fw_reset) {
+			set_bit(BNXT_STATE_FW_RESET_DET, &bp->state);
 			if (!test_bit(BNXT_STATE_IN_FW_RESET, &bp->state))
 				bnxt_ulp_stop(bp);
 			bnxt_free_ctx_mem(bp);
@@ -9619,16 +9620,17 @@ static int bnxt_hwrm_if_change(struct bnxt *bp, bool up)
 			bnxt_dcb_free(bp);
 			rc = bnxt_fw_init_one(bp);
 			if (rc) {
+				clear_bit(BNXT_STATE_FW_RESET_DET, &bp->state);
 				set_bit(BNXT_STATE_ABORT_ERR, &bp->state);
 				return rc;
 			}
 			bnxt_clear_int_mode(bp);
 			rc = bnxt_init_int_mode(bp);
 			if (rc) {
+				clear_bit(BNXT_STATE_FW_RESET_DET, &bp->state);
 				netdev_err(bp->dev, "init int mode failed\n");
 				return rc;
 			}
-			set_bit(BNXT_STATE_FW_RESET_DET, &bp->state);
 		}
 		if (BNXT_NEW_RM(bp)) {
 			struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
-- 
2.18.1