From patchwork Sun Feb 1 11:28:47 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shachar Raindel X-Patchwork-Id: 5756501 Return-Path: X-Original-To: patchwork-linux-rdma@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 6A9389F302 for ; Sun, 1 Feb 2015 11:31:48 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5310920125 for ; Sun, 1 Feb 2015 11:31:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 527AE20253 for ; Sun, 1 Feb 2015 11:31:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753174AbbBALbm (ORCPT ); Sun, 1 Feb 2015 06:31:42 -0500 Received: from mailp.voltaire.com ([193.47.165.129]:33808 "EHLO mellanox.co.il" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1752887AbbBALbk (ORCPT ); Sun, 1 Feb 2015 06:31:40 -0500 Received: from Internal Mail-Server by MTLPINE1 (envelope-from raindel@mellanox.com) with ESMTPS (AES256-SHA encrypted); 1 Feb 2015 13:31:25 +0200 Received: from gen-l-vrt-067.mtl.labs.mlnx (gen-l-vrt-067.mtl.labs.mlnx [10.137.67.1]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id t11BVPbw029656; Sun, 1 Feb 2015 13:31:25 +0200 From: Shachar Raindel To: roland@kernel.org, sean.hefty@intel.com Cc: linux-rdma@vger.kernel.org, netdev@vger.kernel.org, liranl@mellanox.com, Guy Shapiro , Haggai Eran , Yotam Kenneth , Shachar Raindel Subject: [PATCH for-next 04/10] IB/ipoib: Return IPoIB devices as possible matches to get_net_device_by_port_pkey_ip Date: Sun, 1 Feb 2015 13:28:47 +0200 Message-Id: <1422790133-28725-5-git-send-email-raindel@mellanox.com> X-Mailer: git-send-email 1.7.11.2 In-Reply-To: <1422790133-28725-1-git-send-email-raindel@mellanox.com> References: <1422790133-28725-1-git-send-email-raindel@mellanox.com> Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Guy Shapiro Implement callback that returns network device to ib_core according to connection parameters. Check the ipoib device and iterate over all child devices to look for a match. For each ipoib device we iterate through all upper devices when searching for a matching IP, in order to support bonding. Signed-off-by: Guy Shapiro Signed-off-by: Haggai Eran Signed-off-by: Yotam Kenneth Signed-off-by: Shachar Raindel --- drivers/infiniband/ulp/ipoib/ipoib_main.c | 122 +++++++++++++++++++++++++++++- 1 file changed, 121 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c index 6bad17d4d588..88fb78dd68c9 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_main.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c @@ -48,6 +48,9 @@ #include #include +#include +#include +#include #define DRV_VERSION "1.0.0" @@ -91,11 +94,15 @@ struct ib_sa_client ipoib_sa_client; static void ipoib_add_one(struct ib_device *device); static void ipoib_remove_one(struct ib_device *device); static void ipoib_neigh_reclaim(struct rcu_head *rp); +static struct net_device *ipoib_get_net_device_by_port_pkey_ip( + struct ib_device *dev, u8 port, u16 pkey, + struct sockaddr *addr); static struct ib_client ipoib_client = { .name = "ipoib", .add = ipoib_add_one, - .remove = ipoib_remove_one + .remove = ipoib_remove_one, + .get_net_device_by_port_pkey_ip = ipoib_get_net_device_by_port_pkey_ip, }; int ipoib_open(struct net_device *dev) @@ -222,6 +229,119 @@ static int ipoib_change_mtu(struct net_device *dev, int new_mtu) return 0; } +static bool ipoib_is_dev_match_addr(struct sockaddr *addr, + struct net_device *dev) +{ + struct net *net = dev_net(dev); + + if (addr->sa_family == AF_INET) { + struct in_device *in_dev = in_dev_get(dev); + struct sockaddr_in *addr_in = (struct sockaddr_in *)addr; + __be32 ret_addr; + + if (!in_dev) + return false; + + ret_addr = inet_confirm_addr(net, in_dev, 0, + addr_in->sin_addr.s_addr, + RT_SCOPE_HOST); + in_dev_put(in_dev); + if (ret_addr) + return true; + } +#if IS_ENABLED(CONFIG_IPV6) + else if (addr->sa_family == AF_INET6) { + struct sockaddr_in6 *addr_in6 = (struct sockaddr_in6 *)addr; + + if (ipv6_chk_addr(net, &addr_in6->sin6_addr, dev, 1)) + return true; + } +#endif + return false; +} + +/** + * Find a net_device matching the given address, which is an upper device of + * the given net_device. + * @addr: IP address to look for. + * @dev: base IPoIB net_device + * + * If found, returns the net_device with a reference held. Otherwise return + * NULL. + */ +static struct net_device *ipoib_get_net_dev_match_addr(struct sockaddr *addr, + struct net_device *dev) +{ + struct net_device *upper, + *result = NULL; + struct list_head *iter; + + if (ipoib_is_dev_match_addr(addr, dev)) { + dev_hold(dev); + return dev; + } + + rcu_read_lock(); + netdev_for_each_all_upper_dev_rcu(dev, upper, iter) { + if (ipoib_is_dev_match_addr(addr, upper)) { + dev_hold(upper); + result = upper; + break; + } + } + rcu_read_unlock(); + return result; +} + +static struct net_device *ipoib_get_net_device_by_port_pkey_ip( + struct ib_device *dev, u8 port, u16 pkey, struct sockaddr *addr) +{ + struct ipoib_dev_priv *priv; + struct list_head *dev_list; + u16 pkey_index; + + ib_find_cached_pkey(dev, port, pkey, &pkey_index); + if (pkey_index == (u16)-1) + return NULL; + + if (rdma_node_get_transport(dev->node_type) != RDMA_TRANSPORT_IB) + return NULL; + + dev_list = ib_get_client_data(dev, &ipoib_client); + if (!dev_list) + return NULL; + + list_for_each_entry(priv, dev_list, list) { + struct net_device *net_dev = NULL; + struct ipoib_dev_priv *child_priv; + + if (priv->port != port) + continue; + + if (priv->pkey_index == pkey_index) { + net_dev = ipoib_get_net_dev_match_addr(addr, priv->dev); + if (net_dev) + return net_dev; + } + + down_read(&priv->vlan_rwsem); + list_for_each_entry(child_priv, + &priv->child_intfs, list) { + if (child_priv->pkey_index != pkey_index) + continue; + + net_dev = ipoib_get_net_dev_match_addr( + addr, child_priv->dev); + if (net_dev) + break; + } + up_read(&priv->vlan_rwsem); + if (net_dev) + return net_dev; + } + return NULL; +} + int ipoib_set_mode(struct net_device *dev, const char *buf) { struct ipoib_dev_priv *priv = netdev_priv(dev);