From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9EC971BDEC; Wed, 3 Jan 2024 17:13:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="MD26wY0O" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 23407C433C8; Wed, 3 Jan 2024 17:13:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1704302002; bh=ou7XetbFfL4sxZb7MBoOKTOVXuHl/tav7fYDxbm2Wco=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MD26wY0OgAE6zYXL+VsCb5mTuePk9SavDvvzdYoNam4JFs3X8CrJ2TjTr5GRppaav V3Rnaku8USCahRugYGzfFOcPz/avqMjLIk0SMcP/9Vguha9IsfJD7krQrvaSK6P75w i7ltqNJOujUT4l9tllhARQV2Yq9K/ahfh4vBzwLg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Kangjing Huang , Namjae Jeon , Tom Talpey , Steve French , Sasha Levin Subject: [PATCH 6.6 04/49] ksmbd: fix missing RDMA-capable flag for IPoIB device in ksmbd_rdma_capable_netdev() Date: Wed, 3 Jan 2024 17:55:24 +0100 Message-ID: <20240103164835.626118820@linuxfoundation.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240103164834.970234661@linuxfoundation.org> References: <20240103164834.970234661@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Kangjing Huang [ Upstream commit ecce70cf17d91c3dd87a0c4ea00b2d1387729701 ] Physical ib_device does not have an underlying net_device, thus its association with IPoIB net_device cannot be retrieved via ops.get_netdev() or ib_device_get_by_netdev(). ksmbd reads physical ib_device port GUID from the lower 16 bytes of the hardware addresses on IPoIB net_device and match its underlying ib_device using ib_find_gid() Signed-off-by: Kangjing Huang Acked-by: Namjae Jeon Reviewed-by: Tom Talpey Signed-off-by: Steve French Signed-off-by: Sasha Levin --- fs/smb/server/transport_rdma.c | 40 +++++++++++++++++++++++++--------- 1 file changed, 30 insertions(+), 10 deletions(-) diff --git a/fs/smb/server/transport_rdma.c b/fs/smb/server/transport_rdma.c index 3b269e1f523a1..c5629a68c8b73 100644 --- a/fs/smb/server/transport_rdma.c +++ b/fs/smb/server/transport_rdma.c @@ -2140,8 +2140,7 @@ static int smb_direct_ib_client_add(struct ib_device *ib_dev) if (ib_dev->node_type != RDMA_NODE_IB_CA) smb_direct_port = SMB_DIRECT_PORT_IWARP; - if (!ib_dev->ops.get_netdev || - !rdma_frwr_is_supported(&ib_dev->attrs)) + if (!rdma_frwr_is_supported(&ib_dev->attrs)) return 0; smb_dev = kzalloc(sizeof(*smb_dev), GFP_KERNEL); @@ -2241,17 +2240,38 @@ bool ksmbd_rdma_capable_netdev(struct net_device *netdev) for (i = 0; i < smb_dev->ib_dev->phys_port_cnt; i++) { struct net_device *ndev; - ndev = smb_dev->ib_dev->ops.get_netdev(smb_dev->ib_dev, - i + 1); - if (!ndev) - continue; + if (smb_dev->ib_dev->ops.get_netdev) { + ndev = smb_dev->ib_dev->ops.get_netdev( + smb_dev->ib_dev, i + 1); + if (!ndev) + continue; - if (ndev == netdev) { + if (ndev == netdev) { + dev_put(ndev); + rdma_capable = true; + goto out; + } dev_put(ndev); - rdma_capable = true; - goto out; + /* if ib_dev does not implement ops.get_netdev + * check for matching infiniband GUID in hw_addr + */ + } else if (netdev->type == ARPHRD_INFINIBAND) { + struct netdev_hw_addr *ha; + union ib_gid gid; + u32 port_num; + int ret; + + netdev_hw_addr_list_for_each( + ha, &netdev->dev_addrs) { + memcpy(&gid, ha->addr + 4, sizeof(gid)); + ret = ib_find_gid(smb_dev->ib_dev, &gid, + &port_num, NULL); + if (!ret) { + rdma_capable = true; + goto out; + } + } } - dev_put(ndev); } } out: -- 2.43.0