netdev - [PATCH net-2.6] bonding: Bonding driver does not consider the gso_max_size/gso_max

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Message-ID: <649de771-427a-4876-af3c-9f84a164a7f1@CMEXHTCAS2.ad.emulex.com>
Date:	Wed, 21 Nov 2012 20:05:03 +0530
From:	<sarveshwar.bandi@...lex.com>
To:	<davem@...emloft.net>
CC:	<netdev@...r.kernel.org>,
	Sarveshwar Bandi <sarveshwar.bandi@...lex.com>
Subject: [PATCH net-2.6] bonding: Bonding driver does not consider the gso_max_size/gso_max_segs setting of slave devices.

From: Sarveshwar Bandi <sarveshwar.bandi@...lex.com>

Patch sets the lowest gso_max_size and gso_max_segs values of the slave devices during enslave and detach.

Signed-off-by: Sarveshwar Bandi <sarveshwar.bandi@...lex.com>
---
 drivers/net/bonding/bond_main.c |    7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index b2530b0..5f5b69f 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -1379,6 +1379,8 @@ static void bond_compute_features(struct bonding *bond)
 	struct net_device *bond_dev = bond->dev;
 	netdev_features_t vlan_features = BOND_VLAN_FEATURES;
 	unsigned short max_hard_header_len = ETH_HLEN;
+	unsigned int gso_max_size = GSO_MAX_SIZE;
+	u16 gso_max_segs = GSO_MAX_SEGS;
 	int i;
 	unsigned int flags, dst_release_flag = IFF_XMIT_DST_RELEASE;
 
@@ -1394,11 +1396,16 @@ static void bond_compute_features(struct bonding *bond)
 		dst_release_flag &= slave->dev->priv_flags;
 		if (slave->dev->hard_header_len > max_hard_header_len)
 			max_hard_header_len = slave->dev->hard_header_len;
+
+		gso_max_size = min(gso_max_size, slave->dev->gso_max_size);
+		gso_max_segs = min(gso_max_segs, slave->dev->gso_max_segs);
 	}
 
 done:
 	bond_dev->vlan_features = vlan_features;
 	bond_dev->hard_header_len = max_hard_header_len;
+	bond_dev->gso_max_segs = gso_max_segs;
+	netif_set_gso_max_size(bond_dev, gso_max_size);
 
 	flags = bond_dev->priv_flags & ~IFF_XMIT_DST_RELEASE;
 	bond_dev->priv_flags = flags | dst_release_flag;
-- 
1.7.9.5

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