Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma updates from Jason Gunthorpe:
 "This has been a smaller cycle than normal. One new driver was
  accepted, which is unusual, and at least one more driver remains in
  review on the list.

  Summary:

   - Driver fixes for hns, hfi1, nes, rxe, i40iw, mlx5, cxgb4,
     vmw_pvrdma

   - Many patches from MatthewW converting radix tree and IDR users to
     use xarray

   - Introduction of tracepoints to the MAD layer

   - Build large SGLs at the start for DMA mapping and get the driver to
     split them

   - Generally clean SGL handling code throughout the subsystem

   - Support for restricting RDMA devices to net namespaces for
     containers

   - Progress to remove object allocation boilerplate code from drivers

   - Change in how the mlx5 driver shows representor ports linked to VFs

   - mlx5 uapi feature to access the on chip SW ICM memory

   - Add a new driver for 'EFA'. This is HW that supports user space
     packet processing through QPs in Amazon's cloud"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (186 commits)
  RDMA/ipoib: Allow user space differentiate between valid dev_port
  IB/core, ipoib: Do not overreact to SM LID change event
  RDMA/device: Don't fire uevent before device is fully initialized
  lib/scatterlist: Remove leftover from sg_page_iter comment
  RDMA/efa: Add driver to Kconfig/Makefile
  RDMA/efa: Add the efa module
  RDMA/efa: Add EFA verbs implementation
  RDMA/efa: Add common command handlers
  RDMA/efa: Implement functions that submit and complete admin commands
  RDMA/efa: Add the ABI definitions
  RDMA/efa: Add the com service API definitions
  RDMA/efa: Add the efa_com.h file
  RDMA/efa: Add the efa.h header file
  RDMA/efa: Add EFA device definitions
  RDMA: Add EFA related definitions
  RDMA/umem: Remove hugetlb flag
  RDMA/bnxt_re: Use core helpers to get aligned DMA address
  RDMA/i40iw: Use core helpers to get aligned DMA address within a supported page size
  RDMA/verbs: Add a DMA iterator to return aligned contiguous memory blocks
  RDMA/umem: Add API to find best driver supported page size in an MR
  ...

1 files changed, 101 insertions, 11 deletions

diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c
index 85324012bf07..98eadd3089ce 100644
--- a/drivers/infiniband/core/nldev.c
+++ b/drivers/infiniband/core/nldev.c
@@ -116,6 +116,10 @@ static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = {
 	[RDMA_NLDEV_ATTR_RES_CTXN]              = { .type = NLA_U32 },
 	[RDMA_NLDEV_ATTR_LINK_TYPE]		= { .type = NLA_NUL_STRING,
 				    .len = RDMA_NLDEV_ATTR_ENTRY_STRLEN },
+	[RDMA_NLDEV_SYS_ATTR_NETNS_MODE]	= { .type = NLA_U8 },
+	[RDMA_NLDEV_ATTR_DEV_PROTOCOL]		= { .type = NLA_NUL_STRING,
+				    .len = RDMA_NLDEV_ATTR_ENTRY_STRLEN },
+	[RDMA_NLDEV_NET_NS_FD]			= { .type = NLA_U32 },
 };
 
 static int put_driver_name_print_type(struct sk_buff *msg, const char *name,
@@ -198,6 +202,8 @@ static int fill_nldev_handle(struct sk_buff *msg, struct ib_device *device)
 static int fill_dev_info(struct sk_buff *msg, struct ib_device *device)
 {
 	char fw[IB_FW_VERSION_NAME_MAX];
+	int ret = 0;
+	u8 port;
 
 	if (fill_nldev_handle(msg, device))
 		return -EMSGSIZE;
@@ -226,7 +232,25 @@ static int fill_dev_info(struct sk_buff *msg, struct ib_device *device)
 		return -EMSGSIZE;
 	if (nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_NODE_TYPE, device->node_type))
 		return -EMSGSIZE;
-	return 0;
+
+	/*
+	 * Link type is determined on first port and mlx4 device
+	 * which can potentially have two different link type for the same
+	 * IB device is considered as better to be avoided in the future,
+	 */
+	port = rdma_start_port(device);
+	if (rdma_cap_opa_mad(device, port))
+		ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "opa");
+	else if (rdma_protocol_ib(device, port))
+		ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "ib");
+	else if (rdma_protocol_iwarp(device, port))
+		ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "iw");
+	else if (rdma_protocol_roce(device, port))
+		ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "roce");
+	else if (rdma_protocol_usnic(device, port))
+		ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL,
+				     "usnic");
+	return ret;
 }
 
 static int fill_port_info(struct sk_buff *msg,
@@ -615,7 +639,7 @@ static int nldev_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
 
 	index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
 
-	device = ib_device_get_by_index(index);
+	device = ib_device_get_by_index(sock_net(skb->sk), index);
 	if (!device)
 		return -EINVAL;
 
@@ -659,7 +683,7 @@ static int nldev_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
 		return -EINVAL;
 
 	index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
-	device = ib_device_get_by_index(index);
+	device = ib_device_get_by_index(sock_net(skb->sk), index);
 	if (!device)
 		return -EINVAL;
 
@@ -669,9 +693,20 @@ static int nldev_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
 		nla_strlcpy(name, tb[RDMA_NLDEV_ATTR_DEV_NAME],
 			    IB_DEVICE_NAME_MAX);
 		err = ib_device_rename(device, name);
+		goto done;
 	}
 
+	if (tb[RDMA_NLDEV_NET_NS_FD]) {
+		u32 ns_fd;
+
+		ns_fd = nla_get_u32(tb[RDMA_NLDEV_NET_NS_FD]);
+		err = ib_device_set_netns_put(skb, device, ns_fd);
+		goto put_done;
+	}
+
+done:
 	ib_device_put(device);
+put_done:
 	return err;
 }
 
@@ -707,7 +742,7 @@ static int nldev_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
 {
 	/*
 	 * There is no need to take lock, because
-	 * we are relying on ib_core's lists_rwsem
+	 * we are relying on ib_core's locking.
 	 */
 	return ib_enum_all_devs(_nldev_get_dumpit, skb, cb);
 }
@@ -730,7 +765,7 @@ static int nldev_port_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
 		return -EINVAL;
 
 	index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
-	device = ib_device_get_by_index(index);
+	device = ib_device_get_by_index(sock_net(skb->sk), index);
 	if (!device)
 		return -EINVAL;
 
@@ -784,7 +819,7 @@ static int nldev_port_get_dumpit(struct sk_buff *skb,
 		return -EINVAL;
 
 	ifindex = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
-	device = ib_device_get_by_index(ifindex);
+	device = ib_device_get_by_index(sock_net(skb->sk), ifindex);
 	if (!device)
 		return -EINVAL;
 
@@ -839,7 +874,7 @@ static int nldev_res_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
 		return -EINVAL;
 
 	index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
-	device = ib_device_get_by_index(index);
+	device = ib_device_get_by_index(sock_net(skb->sk), index);
 	if (!device)
 		return -EINVAL;
 
@@ -887,7 +922,6 @@ static int _nldev_res_get_dumpit(struct ib_device *device,
 		nlmsg_cancel(skb, nlh);
 		goto out;
 	}
-
 	nlmsg_end(skb, nlh);
 
 	idx++;
@@ -988,7 +1022,7 @@ static int res_get_common_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
 		return -EINVAL;
 
 	index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
-	device = ib_device_get_by_index(index);
+	device = ib_device_get_by_index(sock_net(skb->sk), index);
 	if (!device)
 		return -EINVAL;
 
@@ -1085,7 +1119,7 @@ static int res_get_common_dumpit(struct sk_buff *skb,
 		return -EINVAL;
 
 	index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
-	device = ib_device_get_by_index(index);
+	device = ib_device_get_by_index(sock_net(skb->sk), index);
 	if (!device)
 		return -EINVAL;
 
@@ -1300,7 +1334,7 @@ static int nldev_dellink(struct sk_buff *skb, struct nlmsghdr *nlh,
 		return -EINVAL;
 
 	index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]);
-	device = ib_device_get_by_index(index);
+	device = ib_device_get_by_index(sock_net(skb->sk), index);
 	if (!device)
 		return -EINVAL;
 
@@ -1313,6 +1347,55 @@ static int nldev_dellink(struct sk_buff *skb, struct nlmsghdr *nlh,
 	return 0;
 }
 
+static int nldev_get_sys_get_dumpit(struct sk_buff *skb,
+				    struct netlink_callback *cb)
+{
+	struct nlattr *tb[RDMA_NLDEV_ATTR_MAX];
+	struct nlmsghdr *nlh;
+	int err;
+
+	err = nlmsg_parse(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1,
+			  nldev_policy, NULL);
+	if (err)
+		return err;
+
+	nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
+			RDMA_NL_GET_TYPE(RDMA_NL_NLDEV,
+					 RDMA_NLDEV_CMD_SYS_GET),
+			0, 0);
+
+	err = nla_put_u8(skb, RDMA_NLDEV_SYS_ATTR_NETNS_MODE,
+			 (u8)ib_devices_shared_netns);
+	if (err) {
+		nlmsg_cancel(skb, nlh);
+		return err;
+	}
+
+	nlmsg_end(skb, nlh);
+	return skb->len;
+}
+
+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];
+	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)
+		return -EINVAL;
+
+	err = rdma_compatdev_set(enable);
+	return err;
+}
+
 static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
 	[RDMA_NLDEV_CMD_GET] = {
 		.doit = nldev_get_doit,
@@ -1358,6 +1441,13 @@ static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = {
 		.doit = nldev_res_get_pd_doit,
 		.dump = nldev_res_get_pd_dumpit,
 	},
+	[RDMA_NLDEV_CMD_SYS_GET] = {
+		.dump = nldev_get_sys_get_dumpit,
+	},
+	[RDMA_NLDEV_CMD_SYS_SET] = {
+		.doit = nldev_set_sys_set_doit,
+		.flags = RDMA_NL_ADMIN_PERM,
+	},
 };
 
 void __init nldev_init(void)