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From: Ajit Khaparde <ajit.khaparde@broadcom.com>
To: dev@dpdk.org
Cc: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>, stable@dpdk.org,
Somnath Kotur <somnath.kotur@broadcom.com>
Subject: [PATCH 05/18] net/bnxt: fix speed change from 200G to 25G on Thor
Date: Thu, 21 Dec 2023 10:05:16 -0800
Message-Id: <20231221180529.18687-6-ajit.khaparde@broadcom.com>
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--000000000000a02736060d08f2f3
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From: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
While forcing speed to 200G, driver sets the structure variable
"bp->link_info->link_signal_mode" value to BNXT_SIG_MODE_PAM4.
After that when the user forces the speed back to 25G, this
cached value is not set back to BNXT_SIG_MODE_NRZ which results
in issuing the HWRM_PORT_PHY_CFG command with wrong inputs.
Fixes: c23f9ded0391 ("net/bnxt: support 200G PAM4 link")
Cc: stable@dpdk.org
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
---
drivers/net/bnxt/bnxt_hwrm.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
index c31a5d4226..a1f3a8251f 100644
--- a/drivers/net/bnxt/bnxt_hwrm.c
+++ b/drivers/net/bnxt/bnxt_hwrm.c
@@ -3191,6 +3191,7 @@ static uint16_t bnxt_parse_eth_link_speed(uint32_t conf_link_speed,
case RTE_ETH_LINK_SPEED_25G:
eth_link_speed =
HWRM_PORT_PHY_CFG_INPUT_FORCE_LINK_SPEED_25GB;
+ link_info->link_signal_mode = BNXT_SIG_MODE_NRZ;
break;
case RTE_ETH_LINK_SPEED_40G:
eth_link_speed =
--
2.39.2 (Apple Git-143)
--000000000000a02736060d08f2f3
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