From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nikolay Aleksandrov Subject: [PATCH net-next v2 2/7] bonding: 3ad: use curr_slave_lock instead of bond->lock Date: Tue, 9 Sep 2014 23:16:58 +0200 Message-ID: <1410297423-26624-3-git-send-email-nikolay@redhat.com> References: <1410297423-26624-1-git-send-email-nikolay@redhat.com> Cc: hariprasad@chelsio.com, vfalico@gmail.com, j.vosburgh@gmail.com, andy@greyhouse.net, davem@davemloft.net, Nikolay Aleksandrov To: netdev@vger.kernel.org Return-path: Received: from mx1.redhat.com ([209.132.183.28]:46636 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751387AbaIIVRU (ORCPT ); Tue, 9 Sep 2014 17:17:20 -0400 In-Reply-To: <1410297423-26624-1-git-send-email-nikolay@redhat.com> Sender: netdev-owner@vger.kernel.org List-ID: In 3ad mode the only syncing needed by bond->lock is for the wq and the recv handler, so change them to use curr_slave_lock. There're no locking dependencies here as 3ad doesn't use curr_slave_lock at all. Signed-off-by: Nikolay Aleksandrov --- drivers/net/bonding/bond_3ad.c | 9 ++++----- drivers/net/bonding/bond_main.c | 12 +++++++----- 2 files changed, 11 insertions(+), 10 deletions(-) diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c index ee2c73a9de39..5d27a6207384 100644 --- a/drivers/net/bonding/bond_3ad.c +++ b/drivers/net/bonding/bond_3ad.c @@ -2057,7 +2057,7 @@ void bond_3ad_state_machine_handler(struct work_struct *work) struct port *port; bool should_notify_rtnl = BOND_SLAVE_NOTIFY_LATER; - read_lock(&bond->lock); + read_lock(&bond->curr_slave_lock); rcu_read_lock(); /* check if there are any slaves */ @@ -2120,7 +2120,7 @@ re_arm: } } rcu_read_unlock(); - read_unlock(&bond->lock); + read_unlock(&bond->curr_slave_lock); if (should_notify_rtnl && rtnl_trylock()) { bond_slave_state_notify(bond); @@ -2395,7 +2395,6 @@ int __bond_3ad_get_active_agg_info(struct bonding *bond, return 0; } -/* Wrapper used to hold bond->lock so no slave manipulation can occur */ int bond_3ad_get_active_agg_info(struct bonding *bond, struct ad_info *ad_info) { int ret; @@ -2487,9 +2486,9 @@ int bond_3ad_lacpdu_recv(const struct sk_buff *skb, struct bonding *bond, if (!lacpdu) return ret; - read_lock(&bond->lock); + read_lock(&bond->curr_slave_lock); ret = bond_3ad_rx_indication(lacpdu, slave, skb->len); - read_unlock(&bond->lock); + read_unlock(&bond->curr_slave_lock); return ret; } diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index f0f5eab0fab1..dcd331bd0c17 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1687,13 +1687,15 @@ static int __bond_release_one(struct net_device *bond_dev, * for this slave anymore. */ netdev_rx_handler_unregister(slave_dev); - write_lock_bh(&bond->lock); - /* Inform AD package of unbinding of slave. */ - if (BOND_MODE(bond) == BOND_MODE_8023AD) + if (BOND_MODE(bond) == BOND_MODE_8023AD) { + /* Sync against bond_3ad_rx_indication and + * bond_3ad_state_machine_handler + */ + write_lock_bh(&bond->curr_slave_lock); bond_3ad_unbind_slave(slave); - - write_unlock_bh(&bond->lock); + write_unlock_bh(&bond->curr_slave_lock); + } netdev_info(bond_dev, "Releasing %s interface %s\n", bond_is_active_slave(slave) ? "active" : "backup", -- 1.9.3