From: Michael Chan <michael.chan@broadcom.com>
To: davem@davemloft.net
Cc: netdev@vger.kernel.org, kuba@kernel.org, gospo@broadcom.com
Subject: [PATCH net-next 09/15] bnxt_en: Retry open if firmware is in reset.
Date: Mon, 25 Jan 2021 02:08:15 -0500 [thread overview]
Message-ID: <1611558501-11022-10-git-send-email-michael.chan@broadcom.com> (raw)
In-Reply-To: <1611558501-11022-1-git-send-email-michael.chan@broadcom.com>
From: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Firmware may be in the middle of reset when the driver tries to do ifup.
In that case, firmware will return a special error code and the driver
will retry 10 times with 50 msecs delay after each retry.
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 15 +++++++++++++--
drivers/net/ethernet/broadcom/bnxt/bnxt.h | 1 +
2 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 7f30a9fee0c8..c35a5d497c1e 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -9411,8 +9411,8 @@ static int bnxt_hwrm_if_change(struct bnxt *bp, bool up)
struct hwrm_func_drv_if_change_output *resp = bp->hwrm_cmd_resp_addr;
struct hwrm_func_drv_if_change_input req = {0};
bool resc_reinit = false, fw_reset = false;
+ int rc, retry = 0;
u32 flags = 0;
- int rc;
if (!(bp->fw_cap & BNXT_FW_CAP_IF_CHANGE))
return 0;
@@ -9421,10 +9421,21 @@ static int bnxt_hwrm_if_change(struct bnxt *bp, bool up)
if (up)
req.flags = cpu_to_le32(FUNC_DRV_IF_CHANGE_REQ_FLAGS_UP);
mutex_lock(&bp->hwrm_cmd_lock);
- rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+ while (retry < BNXT_FW_IF_RETRY) {
+ rc = _hwrm_send_message(bp, &req, sizeof(req),
+ HWRM_CMD_TIMEOUT);
+ if (rc != -EAGAIN)
+ break;
+
+ msleep(50);
+ retry++;
+ }
if (!rc)
flags = le32_to_cpu(resp->flags);
mutex_unlock(&bp->hwrm_cmd_lock);
+
+ if (rc == -EAGAIN)
+ return rc;
if (rc && up) {
rc = bnxt_try_recover_fw(bp);
fw_reset = true;
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index cbb338baab07..bd36f00ef28c 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -1554,6 +1554,7 @@ struct bnxt_fw_reporter_ctx {
BNXT_FW_STATUS_HEALTHY)
#define BNXT_FW_RETRY 5
+#define BNXT_FW_IF_RETRY 10
struct bnxt {
void __iomem *bar0;
--
2.18.1
next prev parent reply other threads:[~2021-01-25 7:44 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-25 7:08 [PATCH net-next 00/15] bnxt_en: Error recovery improvements Michael Chan
2021-01-25 7:08 ` [PATCH net-next 01/15] bnxt_en: Update firmware interface to 1.10.2.11 Michael Chan
2021-01-25 7:08 ` [PATCH net-next 02/15] bnxt_en: Define macros for the various health register states Michael Chan
2021-01-25 7:08 ` [PATCH net-next 03/15] bnxt_en: handle CRASH_NO_MASTER during bnxt_open() Michael Chan
2021-01-25 7:08 ` [PATCH net-next 04/15] bnxt_en: Retry sending the first message to firmware if it is under reset Michael Chan
2021-01-25 7:08 ` [PATCH net-next 05/15] bnxt_en: Move reading VPD info after successful handshake with fw Michael Chan
2021-01-25 7:08 ` [PATCH net-next 06/15] bnxt_en: Add an upper bound for all firmware command timeouts Michael Chan
2021-01-25 7:08 ` [PATCH net-next 07/15] bnxt_en: log firmware debug notifications Michael Chan
2021-01-25 9:24 ` Joe Perches
2021-01-25 7:08 ` [PATCH net-next 08/15] bnxt_en: attempt to reinitialize after aborted reset Michael Chan
2021-01-25 7:08 ` Michael Chan [this message]
2021-01-25 7:08 ` [PATCH net-next 10/15] bnxt_en: Add bnxt_fw_reset_timeout() helper Michael Chan
2021-01-25 7:08 ` [PATCH net-next 11/15] bnxt_en: Add a new BNXT_STATE_NAPI_DISABLED flag to keep track of NAPI state Michael Chan
2021-01-25 7:08 ` [PATCH net-next 12/15] bnxt_en: Modify bnxt_disable_int_sync() to be called more than once Michael Chan
2021-01-25 7:08 ` [PATCH net-next 13/15] bnxt_en: Improve firmware fatal error shutdown sequence Michael Chan
2021-01-25 7:08 ` [PATCH net-next 14/15] bnxt_en: Consolidate firmware reset event logging Michael Chan
2021-01-25 7:08 ` [PATCH net-next 15/15] bnxt_en: Do not process completion entries after fatal condition detected Michael Chan
2021-01-26 1:37 ` [PATCH net-next 00/15] bnxt_en: Error recovery improvements Willem de Bruijn
2021-01-26 3:23 ` Jakub Kicinski
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1611558501-11022-10-git-send-email-michael.chan@broadcom.com \
--to=michael.chan@broadcom.com \
--cc=davem@davemloft.net \
--cc=gospo@broadcom.com \
--cc=kuba@kernel.org \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).