netdev - RE: [net PATCH 3/7] bnx2x: prevent timeouts when using PFC

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Date:	Tue, 11 Sep 2012 05:49:41 +0000
From:	"Yaniv Rosner" <yaniv.rosner@...adcom.com>
To:	"Yuval Mintz" <yuvalmin@...adcom.com>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
cc:	"Eilon Greenstein" <eilong@...adcom.com>,
	"Yuval Mintz" <yuvalmin@...adcom.com>
Subject: RE: [net PATCH 3/7] bnx2x: prevent timeouts when using PFC

Ack

-----Original Message-----
From: Yuval Mintz [mailto:yuvalmin@...adcom.com] 
Sent: Monday, September 10, 2012 6:49 PM
To: davem@...emloft.net; netdev@...r.kernel.org
Cc: Eilon Greenstein; Yaniv Rosner; Yuval Mintz
Subject: [net PATCH 3/7] bnx2x: prevent timeouts when using PFC

From: Yaniv Rosner <yaniv.rosner@...adcom.com>

Prevent updating the xmac PFC configuration when using a link speed
slower than 10G -the umac block is responsible for 1G or slower connections,
therefore it is possible the xmac block is reset when connection is slower.

Signed-off-by: Yaniv Rosner <yaniv.rosner@...adcom.com>
Signed-off-by: Yuval Mintz <yuvalmin@...adcom.com>
Signed-off-by: Eilon Greenstein <eilong@...adcom.com>
---
 drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
index f4beb46..40a7b8d 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
@@ -2667,9 +2667,11 @@ int bnx2x_update_pfc(struct link_params *params,
 		return bnx2x_status;
 
 	DP(NETIF_MSG_LINK, "About to update PFC in BMAC\n");
-	if (CHIP_IS_E3(bp))
-		bnx2x_update_pfc_xmac(params, vars, 0);
-	else {
+
+	if (CHIP_IS_E3(bp)) {
+		if (vars->mac_type == MAC_TYPE_XMAC)
+			bnx2x_update_pfc_xmac(params, vars, 0);
+	} else {
 		val = REG_RD(bp, MISC_REG_RESET_REG_2);
 		if ((val &
 		     (MISC_REGISTERS_RESET_REG_2_RST_BMAC0 << params->port))
-- 
1.7.9.rc2


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