linux-kernel - Re: [PATCH net-next v4 3/3] bnxt_en: implement callbacks for devlink selftests

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Message-ID: <YtlNyC9t3KsveqQH@nanopsycho>
Date:   Thu, 21 Jul 2022 14:59:52 +0200
From:   Jiri Pirko <jiri@...dia.com>
To:     Vikas Gupta <vikas.gupta@...adcom.com>
Cc:     kuba@...nel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, davem@...emloft.net,
        dsahern@...nel.org, stephen@...workplumber.org,
        edumazet@...gle.com, pabeni@...hat.com, ast@...nel.org,
        leon@...nel.org, linux-doc@...r.kernel.org, corbet@....net,
        michael.chan@...adcom.com, andrew.gospodarek@...adcom.com
Subject: Re: [PATCH net-next v4 3/3] bnxt_en: implement callbacks for devlink
 selftests

Thu, Jul 21, 2022 at 09:21:21AM CEST, vikas.gupta@...adcom.com wrote:
>Add callbacks
>=============
>.selftest_check: returns true for flash selftest.
>.selftest_run: runs a flash selftest.
>
>Signed-off-by: Vikas Gupta <vikas.gupta@...adcom.com>
>Reviewed-by: Michael Chan <michael.chan@...adcom.com>
>Reviewed-by: Andy Gospodarek <andrew.gospodarek@...adcom.com>
>---
> .../net/ethernet/broadcom/bnxt/bnxt_devlink.c | 60 +++++++++++++++++++
> 1 file changed, 60 insertions(+)
>
>diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
>index 6b3d4f4c2a75..927cf368d856 100644
>--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
>+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
>@@ -20,6 +20,8 @@
> #include "bnxt_ulp.h"
> #include "bnxt_ptp.h"
> #include "bnxt_coredump.h"
>+#include "bnxt_nvm_defs.h"
>+#include "bnxt_ethtool.h"
> 
> static void __bnxt_fw_recover(struct bnxt *bp)
> {
>@@ -610,6 +612,62 @@ static int bnxt_dl_reload_up(struct devlink *dl, enum devlink_reload_action acti
> 	return rc;
> }
> 
>+static bool bnxt_nvm_test(struct bnxt *bp, struct netlink_ext_ack *extack)
>+{
>+	u32 datalen;
>+	u16 index;
>+	u8 *buf;
>+
>+	if (bnxt_find_nvram_item(bp->dev, BNX_DIR_TYPE_VPD,
>+				 BNX_DIR_ORDINAL_FIRST, BNX_DIR_EXT_NONE,
>+				 &index, NULL, &datalen) || !datalen) {
>+		NL_SET_ERR_MSG_MOD(extack, "nvm test vpd entry error");
>+		return false;
>+	}
>+
>+	buf = kzalloc(datalen, GFP_KERNEL);
>+	if (!buf) {
>+		NL_SET_ERR_MSG_MOD(extack, "insufficient memory for nvm test");
>+		return false;
>+	}
>+
>+	if (bnxt_get_nvram_item(bp->dev, index, 0, datalen, buf)) {
>+		NL_SET_ERR_MSG_MOD(extack, "nvm test vpd read error");
>+		goto err;
>+	}
>+
>+	if (bnxt_flash_nvram(bp->dev, BNX_DIR_TYPE_VPD, BNX_DIR_ORDINAL_FIRST,
>+			     BNX_DIR_EXT_NONE, 0, 0, buf, datalen)) {
>+		NL_SET_ERR_MSG_MOD(extack, "nvm test vpd write error");
>+		goto err;
>+	}
>+
>+	return true;
>+
>+err:
>+	kfree(buf);
>+	return false;
>+}
>+
>+static bool bnxt_dl_selftest_check(struct devlink *dl, int test_id,
>+				   struct netlink_ext_ack *extack)
>+{
>+	return (test_id == DEVLINK_SELFTEST_ATTR_FLASH);

Return is not a function, avoid "()"


>+}
>+
>+static u8 bnxt_dl_selftest_run(struct devlink *dl, int test_id,
>+			       struct netlink_ext_ack *extack)
>+{
>+	struct bnxt *bp = bnxt_get_bp_from_dl(dl);
>+
>+	if (test_id == DEVLINK_SELFTEST_ATTR_FLASH) {
>+		return (bnxt_nvm_test(bp, extack) ? DEVLINK_SELFTEST_PASS :
>+						    DEVLINK_SELFTEST_FAIL);

Return is not a function, avoid "()"

>+	}

No need for "{}", it's a simple statement. I'm pretty sure checkpatch
would warn you, did you run it?


>+
>+	return DEVLINK_SELFTEST_SKIP;
>+}
>+
> static const struct devlink_ops bnxt_dl_ops = {
> #ifdef CONFIG_BNXT_SRIOV
> 	.eswitch_mode_set = bnxt_dl_eswitch_mode_set,
>@@ -622,6 +680,8 @@ static const struct devlink_ops bnxt_dl_ops = {
> 	.reload_limits	  = BIT(DEVLINK_RELOAD_LIMIT_NO_RESET),
> 	.reload_down	  = bnxt_dl_reload_down,
> 	.reload_up	  = bnxt_dl_reload_up,
>+	.selftest_check	  = bnxt_dl_selftest_check,
>+	.selftest_run	  = bnxt_dl_selftest_run,
> };
> 
> static const struct devlink_ops bnxt_vf_dl_ops;
>-- 
>2.31.1
>