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Wed, 25 Oct 2023 05:31:13 -0700 From: Patrisious Haddad To: , , , CC: Patrisious Haddad , , , , , , Subject: [PATCH v3 iproute2-next 2/3] rdma: Add an option to set privileged QKEY parameter Date: Wed, 25 Oct 2023 15:31:01 +0300 Message-ID: <20231025123102.27784-3-phaddad@nvidia.com> X-Mailer: git-send-email 2.18.1 In-Reply-To: <20231025123102.27784-1-phaddad@nvidia.com> References: <20231025123102.27784-1-phaddad@nvidia.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000E9DB:EE_|CH0PR12MB5028:EE_ X-MS-Office365-Filtering-Correlation-Id: 381ad323-bd09-435d-52ce-08dbd556548b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.118.232;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge1.nvidia.com;CAT:NONE;SFS:(13230031)(4636009)(396003)(346002)(136003)(376002)(39860400002)(230922051799003)(1800799009)(64100799003)(82310400011)(451199024)(186009)(40470700004)(46966006)(36840700001)(2906002)(86362001)(41300700001)(82740400003)(54906003)(316002)(110136005)(70586007)(6666004)(7696005)(478600001)(107886003)(70206006)(1076003)(7636003)(426003)(47076005)(83380400001)(356005)(40480700001)(336012)(36860700001)(40460700003)(5660300002)(36756003)(4326008)(2616005)(8676002)(8936002)(26005);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Oct 2023 12:31:36.4283 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 381ad323-bd09-435d-52ce-08dbd556548b X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.232];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000E9DB.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5028 X-Patchwork-Delegate: dsahern@gmail.com Enrich rdmatool with an option to enable or disable privileged QKEY. When enabled, non-privileged users will be allowed to specify a controlled QKEY. By default this parameter is disabled in order to comply with IB spec. According to the IB specification rel-1.6, section 3.5.3: "QKEYs with the most significant bit set are considered controlled QKEYs, and a HCA does not allow a consumer to arbitrarily specify a controlled QKEY." This allows old applications which existed before the kernel commit: 0cadb4db79e1 ("RDMA/uverbs: Restrict usage of privileged QKEYs") they can use privileged QKEYs without being a privileged user to now be able to work again without being privileged granted they turn on this parameter. rdma tool command examples and output. $ rdma system show netns shared privileged-qkey off copy-on-fork on $ rdma system set privileged-qkey on $ rdma system show netns shared privileged-qkey on copy-on-fork on Signed-off-by: Patrisious Haddad Reviewed-by: Michael Guralnik Reviewed-by: Petr Machata --- rdma/sys.c | 45 +++++++++++++++++++++++++++++++++++++++++++-- rdma/utils.c | 1 + 2 files changed, 44 insertions(+), 2 deletions(-) diff --git a/rdma/sys.c b/rdma/sys.c index fd785b25..3e369553 100644 --- a/rdma/sys.c +++ b/rdma/sys.c @@ -40,6 +40,16 @@ static int sys_show_parse_cb(const struct nlmsghdr *nlh, void *data) mode_str); } + if (tb[RDMA_NLDEV_SYS_ATTR_PRIVILEGED_QKEY_MODE]) { + uint8_t mode; + + mode = mnl_attr_get_u8(tb[RDMA_NLDEV_SYS_ATTR_PRIVILEGED_QKEY_MODE]); + + print_color_on_off(PRINT_ANY, COLOR_NONE, "privileged-qkey", + "privileged-qkey %s ", mode); + + } + if (tb[RDMA_NLDEV_SYS_ATTR_COPY_ON_FORK]) cof = mnl_attr_get_u8(tb[RDMA_NLDEV_SYS_ATTR_COPY_ON_FORK]); @@ -67,8 +77,9 @@ static int sys_show_no_args(struct rd *rd) static int sys_show(struct rd *rd) { const struct rd_cmd cmds[] = { - { NULL, sys_show_no_args}, - { "netns", sys_show_no_args}, + { NULL, sys_show_no_args}, + { "netns", sys_show_no_args}, + { "privileged-qkey", sys_show_no_args}, { 0 } }; @@ -86,6 +97,17 @@ static int sys_set_netns_cmd(struct rd *rd, bool enable) return rd_sendrecv_msg(rd, seq); } +static int sys_set_privileged_qkey_cmd(struct rd *rd, bool enable) +{ + uint32_t seq; + + rd_prepare_msg(rd, RDMA_NLDEV_CMD_SYS_SET, + &seq, (NLM_F_REQUEST | NLM_F_ACK)); + mnl_attr_put_u8(rd->nlh, RDMA_NLDEV_SYS_ATTR_PRIVILEGED_QKEY_MODE, enable); + + return rd_sendrecv_msg(rd, seq); +} + static bool sys_valid_netns_cmd(const char *cmd) { int i; @@ -111,10 +133,28 @@ static int sys_set_netns_args(struct rd *rd) return sys_set_netns_cmd(rd, cmd); } +static int sys_set_privileged_qkey_args(struct rd *rd) +{ + bool cmd; + int ret; + + if (rd_no_arg(rd)) { + pr_err("valid options are: { on | off }\n"); + return -EINVAL; + } + + cmd = parse_on_off("privileged-qkey", rd_argv(rd), &ret); + if (ret) + return -EINVAL; + + return sys_set_privileged_qkey_cmd(rd, cmd); +} + static int sys_set_help(struct rd *rd) { pr_out("Usage: %s system set [PARAM] value\n", rd->filename); pr_out(" system set netns { shared | exclusive }\n"); + pr_out(" system set privileged-qkey { on | off }\n"); return 0; } @@ -124,6 +164,7 @@ static int sys_set(struct rd *rd) { NULL, sys_set_help }, { "help", sys_set_help }, { "netns", sys_set_netns_args}, + { "privileged-qkey", sys_set_privileged_qkey_args}, { 0 } }; diff --git a/rdma/utils.c b/rdma/utils.c index 8a091c05..09985069 100644 --- a/rdma/utils.c +++ b/rdma/utils.c @@ -473,6 +473,7 @@ static const enum mnl_attr_data_type nldev_policy[RDMA_NLDEV_ATTR_MAX] = { [RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK] = MNL_TYPE_U32, [RDMA_NLDEV_ATTR_DEV_DIM] = MNL_TYPE_U8, [RDMA_NLDEV_ATTR_RES_RAW] = MNL_TYPE_BINARY, + [RDMA_NLDEV_SYS_ATTR_PRIVILEGED_QKEY_MODE] = MNL_TYPE_U8, }; static int rd_attr_check(const struct nlattr *attr, int *typep)