linux-kernel - [PATCH 4.12 073/106] net: bonding: Fix transmit load balancing in balance-alb mode

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Date:   Wed,  9 Aug 2017 09:52:57 -0700
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Kosuke Tatsukawa <tatsu@...jp.nec.com>,
        Andy Gospodarek <andy@...yhouse.net>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 4.12 073/106] net: bonding: Fix transmit load balancing in balance-alb mode

4.12-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Kosuke Tatsukawa <tatsu@...jp.nec.com>

[ Upstream commit cbf5ecb305601d063dc94a57680dfbc3f96c188d ]

balance-alb mode used to have transmit dynamic load balancing feature
enabled by default.  However, transmit dynamic load balancing no longer
works in balance-alb after commit 8b426dc54cf4 ("bonding: remove
hardcoded value").

Both balance-tlb and balance-alb use the function bond_do_alb_xmit() to
send packets.  This function uses the parameter tlb_dynamic_lb.
tlb_dynamic_lb used to have the default value of 1 for balance-alb, but
now the value is set to 0 except in balance-tlb.

Re-enable transmit dyanmic load balancing by initializing tlb_dynamic_lb
for balance-alb similar to balance-tlb.

Fixes: 8b426dc54cf4 ("bonding: remove hardcoded value")
Signed-off-by: Kosuke Tatsukawa <tatsu@...jp.nec.com>
Acked-by: Andy Gospodarek <andy@...yhouse.net>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/bonding/bond_main.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -4598,7 +4598,7 @@ static int bond_check_params(struct bond
 	}
 	ad_user_port_key = valptr->value;

-	if (bond_mode == BOND_MODE_TLB) {
+	if ((bond_mode == BOND_MODE_TLB) || (bond_mode == BOND_MODE_ALB)) {
 		bond_opt_initstr(&newval, "default");
 		valptr = bond_opt_parse(bond_opt_get(BOND_OPT_TLB_DYNAMIC_LB),
 					&newval);