1 files changed, 81 insertions, 11 deletions

diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c
index 6d1dbc978759..4900a0848124 100644
--- a/drivers/infiniband/core/nldev.c
+++ b/drivers/infiniband/core/nldev.c
@@ -43,6 +43,13 @@
 #include "restrack.h"
 #include "uverbs.h"
 
+/*
+ * This determines whether a non-privileged user is allowed to specify a
+ * controlled QKEY or not, when true non-privileged user is allowed to specify
+ * a controlled QKEY.
+ */
+static bool privileged_qkey;
+
 typedef int (*res_fill_func_t)(struct sk_buff*, bool,
 			       struct rdma_restrack_entry*, uint32_t);
 
@@ -156,6 +163,7 @@ static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
 	[RDMA_NLDEV_SYS_ATTR_COPY_ON_FORK]	= { .type = NLA_U8 },
 	[RDMA_NLDEV_ATTR_STAT_HWCOUNTER_INDEX]	= { .type = NLA_U32 },
 	[RDMA_NLDEV_ATTR_STAT_HWCOUNTER_DYNAMIC] = { .type = NLA_U8 },
+	[RDMA_NLDEV_SYS_ATTR_PRIVILEGED_QKEY_MODE] = { .type = NLA_U8 },
 };
 
 static int put_driver_name_print_type(struct sk_buff *msg, const char *name,
@@ -237,6 +245,12 @@ int rdma_nl_put_driver_u64_hex(struct sk_buff *msg, const char *name, u64 value)
 }
 EXPORT_SYMBOL(rdma_nl_put_driver_u64_hex);
 
+bool rdma_nl_get_privileged_qkey(void)
+{
+	return privileged_qkey || capable(CAP_NET_RAW);
+}
+EXPORT_SYMBOL(rdma_nl_get_privileged_qkey);
+
 static int fill_nldev_handle(struct sk_buff *msg, struct ib_device *device)
 {
 	if (nla_put_u32(msg, RDMA_NLDEV_ATTR_DEV_INDEX, device->index))
@@ -357,8 +371,7 @@ static int fill_port_info(struct sk_buff *msg,
 	}
 
 out:
-	if (netdev)
-		dev_put(netdev);
+	dev_put(netdev);
 	return ret;
 }
 
@@ -818,6 +831,7 @@ static int fill_res_srq_entry(struct sk_buff *msg, bool has_cap_net_admin,
 			      struct rdma_restrack_entry *res, uint32_t port)
 {
 	struct ib_srq *srq = container_of(res, struct ib_srq, res);
+	struct ib_device *dev = srq->device;
 
 	if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_SRQN, srq->res.id))
 		goto err;
@@ -837,12 +851,29 @@ static int fill_res_srq_entry(struct sk_buff *msg, bool has_cap_net_admin,
 	if (fill_res_srq_qps(msg, srq))
 		goto err;
 
-	return fill_res_name_pid(msg, res);
+	if (fill_res_name_pid(msg, res))
+		goto err;
+
+	if (dev->ops.fill_res_srq_entry)
+		return dev->ops.fill_res_srq_entry(msg, srq);
+
+	return 0;
 
 err:
 	return -EMSGSIZE;
 }
 
+static int fill_res_srq_raw_entry(struct sk_buff *msg, bool has_cap_net_admin,
+				 struct rdma_restrack_entry *res, uint32_t port)
+{
+	struct ib_srq *srq = container_of(res, struct ib_srq, res);
+	struct ib_device *dev = srq->device;
+
+	if (!dev->ops.fill_res_srq_entry_raw)
+		return -EINVAL;
+	return dev->ops.fill_res_srq_entry_raw(msg, srq);
+}
+
 static int fill_stat_counter_mode(struct sk_buff *msg,
 				  struct rdma_counter *counter)
 {
@@ -1652,6 +1683,7 @@ RES_GET_FUNCS(mr_raw, RDMA_RESTRACK_MR);
 RES_GET_FUNCS(counter, RDMA_RESTRACK_COUNTER);
 RES_GET_FUNCS(ctx, RDMA_RESTRACK_CTX);
 RES_GET_FUNCS(srq, RDMA_RESTRACK_SRQ);
+RES_GET_FUNCS(srq_raw, RDMA_RESTRACK_SRQ);
 
 static LIST_HEAD(link_ops);
 static DECLARE_RWSEM(link_ops_rwsem);
@@ -1882,6 +1914,12 @@ static int nldev_sys_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
 		return err;
 	}
 
+	err = nla_put_u8(msg, RDMA_NLDEV_SYS_ATTR_PRIVILEGED_QKEY_MODE,
+			 (u8)privileged_qkey);
+	if (err) {
+		nlmsg_free(msg);
+		return err;
+	}
 	/*
 	 * Copy-on-fork is supported.
 	 * See commits:
@@ -1898,18 +1936,11 @@ static int nldev_sys_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
 	return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid);
 }
 
-static int nldev_set_sys_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
-				  struct netlink_ext_ack *extack)
+static int nldev_set_sys_set_netns_doit(struct nlattr *tb[])
 {
-	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
 	u8 enable;
 	int err;
 
-	err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
-			  nldev_policy, extack);
-	if (err || !tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE])
-		return -EINVAL;
-
 	enable = nla_get_u8(tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE]);
 	/* Only 0 and 1 are supported */
 	if (enable > 1)
@@ -1919,6 +1950,40 @@ static int nldev_set_sys_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
 	return err;
 }
 
+static int nldev_set_sys_set_pqkey_doit(struct nlattr *tb[])
+{
+	u8 enable;
+
+	enable = nla_get_u8(tb[RDMA_NLDEV_SYS_ATTR_PRIVILEGED_QKEY_MODE]);
+	/* Only 0 and 1 are supported */
+	if (enable > 1)
+		return -EINVAL;
+
+	privileged_qkey = enable;
+	return 0;
+}
+
+static int nldev_set_sys_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
+				  struct netlink_ext_ack *extack)
+{
+	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
+	int err;
+
+	err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
+			  nldev_policy, extack);
+	if (err)
+		return -EINVAL;
+
+	if (tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE])
+		return nldev_set_sys_set_netns_doit(tb);
+
+	if (tb[RDMA_NLDEV_SYS_ATTR_PRIVILEGED_QKEY_MODE])
+		return nldev_set_sys_set_pqkey_doit(tb);
+
+	return -EINVAL;
+}
+
+
 static int nldev_stat_set_mode_doit(struct sk_buff *msg,
 				    struct netlink_ext_ack *extack,
 				    struct nlattr *tb[],
@@ -2558,6 +2623,11 @@ static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
 		.dump = nldev_res_get_mr_raw_dumpit,
 		.flags = RDMA_NL_ADMIN_PERM,
 	},
+	[RDMA_NLDEV_CMD_RES_SRQ_GET_RAW] = {
+		.doit = nldev_res_get_srq_raw_doit,
+		.dump = nldev_res_get_srq_raw_dumpit,
+		.flags = RDMA_NL_ADMIN_PERM,
+	},
 	[RDMA_NLDEV_CMD_STAT_GET_STATUS] = {
 		.doit = nldev_stat_get_counter_status_doit,
 	},