netdev - [PATCH net-next 3/7] bnxt_en: Don't support offline self test when RoCE driver is loaded

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Message-Id: <20240430224438.91494-4-michael.chan@broadcom.com>
Date: Tue, 30 Apr 2024 15:44:34 -0700
From: Michael Chan <michael.chan@...adcom.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	andrew.gospodarek@...adcom.com,
	Kalesh AP <kalesh-anakkur.purayil@...adcom.com>,
	Selvin Thyparampil Xavier <selvin.xavier@...adcom.com>,
	Vikas Gupta <vikas.gupta@...adcom.com>,
	Pavan Chebbi <pavan.chebbi@...adcom.com>
Subject: [PATCH net-next 3/7] bnxt_en: Don't support offline self test when RoCE driver is loaded

From: Kalesh AP <kalesh-anakkur.purayil@...adcom.com>

Offline self test is a very disruptive operation for RoCE and requires
all active QPs to be destroyed.  With a large number of QPs, it can
take a long time to destroy all the QPs and can timeout.  Do not allow
ethtool offline self test if the RoCE driver is registered on the
device.

Reviewed-by: Selvin Thyparampil Xavier <selvin.xavier@...adcom.com>
Reviewed-by: Vikas Gupta <vikas.gupta@...adcom.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@...adcom.com>
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@...adcom.com>
Signed-off-by: Michael Chan <michael.chan@...adcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index 6de3cfcea90f..8763f8a01457 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -4820,6 +4820,14 @@ static void bnxt_self_test(struct net_device *dev, struct ethtool_test *etest,
 
 	if (!bp->num_tests || !BNXT_PF(bp))
 		return;
+
+	if (etest->flags & ETH_TEST_FL_OFFLINE &&
+	    bnxt_ulp_registered(bp->edev)) {
+		etest->flags |= ETH_TEST_FL_FAILED;
+		netdev_warn(dev, "Offline tests cannot be run with RoCE driver loaded\n");
+		return;
+	}
+
 	memset(buf, 0, sizeof(u64) * bp->num_tests);
 	if (!netif_running(dev)) {
 		etest->flags |= ETH_TEST_FL_FAILED;
@@ -4850,7 +4858,6 @@ static void bnxt_self_test(struct net_device *dev, struct ethtool_test *etest,
 	if (!offline) {
 		bnxt_run_fw_tests(bp, test_mask, &test_results);
 	} else {
-		bnxt_ulp_stop(bp);
 		bnxt_close_nic(bp, true, false);
 		bnxt_run_fw_tests(bp, test_mask, &test_results);
 
@@ -4861,7 +4868,6 @@ static void bnxt_self_test(struct net_device *dev, struct ethtool_test *etest,
 		if (rc) {
 			bnxt_hwrm_mac_loopback(bp, false);
 			etest->flags |= ETH_TEST_FL_FAILED;
-			bnxt_ulp_start(bp, rc);
 			return;
 		}
 		if (bnxt_run_loopback(bp))
@@ -4888,7 +4894,6 @@ static void bnxt_self_test(struct net_device *dev, struct ethtool_test *etest,
 		bnxt_hwrm_phy_loopback(bp, false, false);
 		bnxt_half_close_nic(bp);
 		rc = bnxt_open_nic(bp, true, true);
-		bnxt_ulp_start(bp, rc);
 	}
 	if (rc || bnxt_test_irq(bp)) {
 		buf[BNXT_IRQ_TEST_IDX] = 1;
-- 
2.30.1


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