From patchwork Tue Apr 21 10:28:34 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maor Gottlieb X-Patchwork-Id: 11500963 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0DCD592C for ; Tue, 21 Apr 2020 10:28:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EA1942075E for ; Tue, 21 Apr 2020 10:28:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728551AbgDUK25 (ORCPT ); Tue, 21 Apr 2020 06:28:57 -0400 Received: from mail-il-dmz.mellanox.com ([193.47.165.129]:60577 "EHLO mellanox.co.il" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726018AbgDUK24 (ORCPT ); Tue, 21 Apr 2020 06:28:56 -0400 Received: from Internal Mail-Server by MTLPINE2 (envelope-from maorg@mellanox.com) with ESMTPS (AES256-SHA encrypted); 21 Apr 2020 13:28:53 +0300 Received: from dev-l-vrt-201.mtl.labs.mlnx (dev-l-vrt-201.mtl.labs.mlnx [10.134.201.1]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id 03LASrmr019072; Tue, 21 Apr 2020 13:28:53 +0300 From: Maor Gottlieb To: davem@davemloft.net, jgg@mellanox.com, dledford@redhat.com, j.vosburgh@gmail.com, vfalico@gmail.com, andy@greyhouse.net, kuba@kernel.org, jiri@mellanox.com, dsahern@kernel.org Cc: leonro@mellanox.com, saeedm@mellanox.com, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, alexr@mellanox.com, Maor Gottlieb Subject: [PATCH V3 mlx5-next 05/15] bonding: Add helper function to get the xmit slave based on hash Date: Tue, 21 Apr 2020 13:28:34 +0300 Message-Id: <20200421102844.23640-6-maorg@mellanox.com> X-Mailer: git-send-email 2.17.2 In-Reply-To: <20200421102844.23640-1-maorg@mellanox.com> References: <20200421102844.23640-1-maorg@mellanox.com> Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org Both xor and 802.3ad modes use bond_xmit_hash to get the xmit slave. Export the logic to helper function so it could be used in the following patches by the .ndo to get the xmit slave. Signed-off-by: Maor Gottlieb Reviewed-by: Jiri Pirko --- drivers/net/bonding/bond_main.c | 28 +++++++++++++++++++++------- 1 file changed, 21 insertions(+), 7 deletions(-) diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 2cb41d480ae2..8e6305955c75 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -4185,6 +4185,23 @@ int bond_update_slave_arr(struct bonding *bond, struct slave *skipslave) return ret; } +static struct slave *bond_xmit_3ad_xor_slave_get(struct bonding *bond, + struct sk_buff *skb, + struct bond_up_slave *slaves) +{ + struct slave *slave; + unsigned int count; + u32 hash; + + hash = bond_xmit_hash(bond, skb); + count = slaves ? READ_ONCE(slaves->count) : 0; + if (unlikely(!count)) + return NULL; + + slave = slaves->arr[hash % count]; + return slave; +} + /* Use this Xmit function for 3AD as well as XOR modes. The current * usable slave array is formed in the control path. The xmit function * just calculates hash and sends the packet out. @@ -4193,18 +4210,15 @@ static netdev_tx_t bond_3ad_xor_xmit(struct sk_buff *skb, struct net_device *dev) { struct bonding *bond = netdev_priv(dev); - struct slave *slave; struct bond_up_slave *slaves; - unsigned int count; + struct slave *slave; slaves = rcu_dereference(bond->usable_slaves); - count = slaves ? READ_ONCE(slaves->count) : 0; - if (likely(count)) { - slave = slaves->arr[bond_xmit_hash(bond, skb) % count]; + slave = bond_xmit_3ad_xor_slave_get(bond, skb, slaves); + if (likely(slave)) bond_dev_queue_xmit(bond, skb, slave->dev); - } else { + else bond_tx_drop(dev, skb); - } return NETDEV_TX_OK; }