From patchwork Fri May 19 12:48:51 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Jurgens X-Patchwork-Id: 9737095 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 3F3B16034C for ; Fri, 19 May 2017 12:49:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3238328929 for ; Fri, 19 May 2017 12:49:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 26CFA28930; Fri, 19 May 2017 12:49:19 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B383D28929 for ; Fri, 19 May 2017 12:49:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751457AbdESMtR (ORCPT ); Fri, 19 May 2017 08:49:17 -0400 Received: from mail-il-dmz.mellanox.com ([193.47.165.129]:46892 "EHLO mellanox.co.il" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750820AbdESMtQ (ORCPT ); Fri, 19 May 2017 08:49:16 -0400 Received: from Internal Mail-Server by MTLPINE1 (envelope-from danielj@mellanox.com) with ESMTPS (AES256-SHA encrypted); 19 May 2017 15:49:14 +0300 Received: from x-vnc01.mtx.labs.mlnx. (x-vnc01.mtx.labs.mlnx [10.12.150.16]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id v4JCn8HP027204; Fri, 19 May 2017 15:49:11 +0300 From: Dan Jurgens To: chrisw@sous-sol.org, paul@paul-moore.com, sds@tycho.nsa.gov, eparis@parisplace.org, dledford@redhat.com, sean.hefty@intel.com, hal.rosenstock@gmail.com Cc: selinux@tycho.nsa.gov, linux-security-module@vger.kernel.org, linux-rdma@vger.kernel.org, yevgenyp@mellanox.com, Daniel Jurgens Subject: [PATCH v7 1/9] IB/core: IB cache enhancements to support Infiniband security Date: Fri, 19 May 2017 15:48:51 +0300 Message-Id: <1495198139-69993-2-git-send-email-danielj@mellanox.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1495198139-69993-1-git-send-email-danielj@mellanox.com> References: <1495198139-69993-1-git-send-email-danielj@mellanox.com> Sender: owner-linux-security-module@vger.kernel.org Precedence: bulk List-ID: X-Virus-Scanned: ClamAV using ClamSMTP From: Daniel Jurgens Cache the subnet prefix and add a function to access it. Enforcing security requires frequent queries of the subnet prefix and the pkeys in the pkey table. Signed-off-by: Daniel Jurgens Reviewed-by: Eli Cohen Reviewed-by: Leon Romanovsky Reviewed-by: James Morris --- v2: - In ib_get_cached_subnet_prefix wait to initialize p until after validation. Yuval Shaia drivers/infiniband/core/cache.c | 22 ++++++++++++++++++++++ drivers/infiniband/core/core_priv.h | 3 +++ include/rdma/ib_verbs.h | 1 + 3 files changed, 26 insertions(+) diff --git a/drivers/infiniband/core/cache.c b/drivers/infiniband/core/cache.c index b1371eb..b9c0066 100644 --- a/drivers/infiniband/core/cache.c +++ b/drivers/infiniband/core/cache.c @@ -911,6 +911,26 @@ int ib_get_cached_pkey(struct ib_device *device, } EXPORT_SYMBOL(ib_get_cached_pkey); +int ib_get_cached_subnet_prefix(struct ib_device *device, + u8 port_num, + u64 *sn_pfx) +{ + unsigned long flags; + int p; + + if (port_num < rdma_start_port(device) || + port_num > rdma_end_port(device)) + return -EINVAL; + + p = port_num - rdma_start_port(device); + read_lock_irqsave(&device->cache.lock, flags); + *sn_pfx = device->cache.ports[p].subnet_prefix; + read_unlock_irqrestore(&device->cache.lock, flags); + + return 0; +} +EXPORT_SYMBOL(ib_get_cached_subnet_prefix); + int ib_find_cached_pkey(struct ib_device *device, u8 port_num, u16 pkey, @@ -1108,6 +1128,8 @@ static void ib_cache_update(struct ib_device *device, device->cache.ports[port - rdma_start_port(device)].port_state = tprops->state; + device->cache.ports[port - rdma_start_port(device)].subnet_prefix = + tprops->subnet_prefix; write_unlock_irq(&device->cache.lock); kfree(gid_cache); diff --git a/drivers/infiniband/core/core_priv.h b/drivers/infiniband/core/core_priv.h index cb7d372..249e3ed 100644 --- a/drivers/infiniband/core/core_priv.h +++ b/drivers/infiniband/core/core_priv.h @@ -176,4 +176,7 @@ int ib_nl_handle_set_timeout(struct sk_buff *skb, int ib_nl_handle_ip_res_resp(struct sk_buff *skb, struct netlink_callback *cb); +int ib_get_cached_subnet_prefix(struct ib_device *device, + u8 port_num, + u64 *sn_pfx); #endif /* _CORE_PRIV_H */ diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 99e4423..23486d3 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -1841,6 +1841,7 @@ enum ib_mad_result { #define IB_DEVICE_NAME_MAX 64 struct ib_port_cache { + u64 subnet_prefix; struct ib_pkey_cache *pkey; struct ib_gid_table *gid; u8 lmc;