From patchwork Mon Apr 20 09:03:36 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Haggai Eran X-Patchwork-Id: 6241001 Return-Path: X-Original-To: patchwork-linux-rdma@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 66FDFBF4A6 for ; Mon, 20 Apr 2015 09:04:16 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 6292D20373 for ; Mon, 20 Apr 2015 09:04:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4882520361 for ; Mon, 20 Apr 2015 09:04:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754247AbbDTJEM (ORCPT ); Mon, 20 Apr 2015 05:04:12 -0400 Received: from ns1327.ztomy.com ([193.47.165.129]:44574 "EHLO mellanox.co.il" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1754102AbbDTJEL (ORCPT ); Mon, 20 Apr 2015 05:04:11 -0400 Received: from Internal Mail-Server by MTLPINE1 (envelope-from haggaie@mellanox.com) with ESMTPS (AES256-SHA encrypted); 20 Apr 2015 12:03:43 +0300 Received: from gen-l-vrt-034.mtl.labs.mlnx (gen-l-vrt-034.mtl.labs.mlnx [10.137.34.1]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id t3K93i2V017594; Mon, 20 Apr 2015 12:03:44 +0300 From: Haggai Eran To: Doug Ledford , Roland Dreier Cc: Sean Hefty , linux-rdma@vger.kernel.org, netdev@vger.kernel.org, Liran Liss , Guy Shapiro , Shachar Raindel , Yotam Kenneth , Haggai Eran Subject: [PATCH v2 05/11] IB/ipoib: Return IPoIB devices as possible matches to get_net_device_by_port_pkey_ip Date: Mon, 20 Apr 2015 12:03:36 +0300 Message-Id: <1429520622-10303-6-git-send-email-haggaie@mellanox.com> X-Mailer: git-send-email 1.7.11.2 In-Reply-To: <1429520622-10303-1-git-send-email-haggaie@mellanox.com> References: <1429520622-10303-1-git-send-email-haggaie@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=ham 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 7cad4dd87469..89a59a0e17e6 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);