From mboxrd@z Thu Jan 1 00:00:00 1970 From: Subject: [PATCH net-2.6] be2net: Bonding driver does not considerthe gso_max_size setting of slaves. Date: Wed, 21 Nov 2012 16:37:43 +0530 Message-ID: Mime-Version: 1.0 Content-Type: text/plain Cc: , Sarveshwar Bandi To: Return-path: Received: from cmexedge2.ext.emulex.com ([138.239.224.100]:9315 "EHLO CMEXEDGE2.ext.emulex.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752826Ab2KULHb (ORCPT ); Wed, 21 Nov 2012 06:07:31 -0500 Sender: netdev-owner@vger.kernel.org List-ID: From: Sarveshwar Bandi Patch sets the lowest non-zero gso_max_size value of the slaves during enslave and detach. Signed-off-by: Sarveshwar Bandi --- drivers/net/bonding/bond_main.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index b2530b0..5f19d16 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1198,6 +1198,31 @@ static void bond_attach_slave(struct bonding *bond, struct slave *new_slave) bond->slave_cnt++; } +static void bond_set_gso_max_size(struct bonding *bond) +{ + struct slave *slave; + struct net_device *bond_dev = bond->dev; + unsigned int gso_max_size = 0; + bool reset_gso_size = true; + int i; + + bond_for_each_slave(bond, slave, i) { + if (!slave->dev->gso_max_size) + continue; + + reset_gso_size = false; + + if (!gso_max_size || + slave->dev->gso_max_size < gso_max_size) + gso_max_size = slave->dev->gso_max_size; + } + + if (gso_max_size && gso_max_size < bond_dev->gso_max_size) + netif_set_gso_max_size(bond_dev, gso_max_size); + else if (reset_gso_size) + netif_set_gso_max_size(bond_dev, 0); +} + /* * This function detaches the slave from the list. * WARNING: no check is made to verify if the slave effectively @@ -1403,6 +1428,8 @@ done: flags = bond_dev->priv_flags & ~IFF_XMIT_DST_RELEASE; bond_dev->priv_flags = flags | dst_release_flag; + bond_set_gso_max_size(bond); + read_unlock(&bond->lock); netdev_change_features(bond_dev); -- 1.7.9.5