bonding: Bonding driver does not consider the gso_max_size/gso_max_segs setting of slave devices.

[ Upstream commit 0e376bd0 ]

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@emulex.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/net/bonding/bond_main.c

@@ -1439,6 +1439,8 @@ static void bond_compute_features(struct bonding *bond)
 	struct net_device *bond_dev = bond->dev;
 	u32 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;
 
 	read_lock(&bond->lock);
@@ -1452,11 +1454,16 @@ static void bond_compute_features(struct bonding *bond)
 
 		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);
 
 	read_unlock(&bond->lock);