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Commit 565edd1d authored by Guy Shapiro's avatar Guy Shapiro Committed by Doug Ledford
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IB/addr: Pass network namespace as a parameter 



Add network namespace support to the ib_addr module. For that, all the
address resolution and matching should be done using the appropriate
namespace instead of init_net.

This is achieved by:

1. Adding an explicit network namespace argument to exported function that
   require a namespace.
2. Saving the namespace in the rdma_addr_client structure.
3. Using it when calling networking functions.

In order to preserve the behavior of calling modules, &init_net is
passed as the parameter in calls from other modules. This is modified as
namespace support is added on more levels.

Signed-off-by: default avatarHaggai Eran <haggaie@mellanox.com>
Signed-off-by: default avatarYotam Kenneth <yotamke@mellanox.com>
Signed-off-by: default avatarShachar Raindel <raindel@mellanox.com>
Signed-off-by: default avatarGuy Shapiro <guysh@mellanox.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent 630c3183

drivers/infiniband/core/addr.c

+9 −8
Original line number Diff line number Diff line
@@ -128,7 +128,7 @@ int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr, 
	int ret = -EADDRNOTAVAIL;



	if (dev_addr->bound_dev_if) {

		dev = dev_get_by_index(&init_net, dev_addr->bound_dev_if);

		dev = dev_get_by_index(dev_addr->net, dev_addr->bound_dev_if);

		if (!dev)

			return -ENODEV;

		ret = rdma_copy_addr(dev_addr, dev, NULL);
@@ -138,7 +138,7 @@ int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr, 


	switch (addr->sa_family) {

	case AF_INET:

		dev = ip_dev_find(&init_net,

		dev = ip_dev_find(dev_addr->net,

			((struct sockaddr_in *) addr)->sin_addr.s_addr);



		if (!dev)
@@ -149,12 +149,11 @@ int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr, 
			*vlan_id = rdma_vlan_dev_vlan_id(dev);

		dev_put(dev);

		break;



#if IS_ENABLED(CONFIG_IPV6)

	case AF_INET6:

		rcu_read_lock();

		for_each_netdev_rcu(&init_net, dev) {

			if (ipv6_chk_addr(&init_net,

		for_each_netdev_rcu(dev_addr->net, dev) {

			if (ipv6_chk_addr(dev_addr->net,

					  &((struct sockaddr_in6 *) addr)->sin6_addr,

					  dev, 1)) {

				ret = rdma_copy_addr(dev_addr, dev, NULL);
@@ -236,7 +235,7 @@ static int addr4_resolve(struct sockaddr_in *src_in, 
	fl4.daddr = dst_ip;

	fl4.saddr = src_ip;

	fl4.flowi4_oif = addr->bound_dev_if;

	rt = ip_route_output_key(&init_net, &fl4);

	rt = ip_route_output_key(addr->net, &fl4);

	if (IS_ERR(rt)) {

		ret = PTR_ERR(rt);

		goto out;
@@ -278,12 +277,12 @@ static int addr6_resolve(struct sockaddr_in6 *src_in, 
	fl6.saddr = src_in->sin6_addr;

	fl6.flowi6_oif = addr->bound_dev_if;



	dst = ip6_route_output(&init_net, NULL, &fl6);

	dst = ip6_route_output(addr->net, NULL, &fl6);

	if ((ret = dst->error))

		goto put;



	if (ipv6_addr_any(&fl6.saddr)) {

		ret = ipv6_dev_get_saddr(&init_net, ip6_dst_idev(dst)->dev,

		ret = ipv6_dev_get_saddr(addr->net, ip6_dst_idev(dst)->dev,

					 &fl6.daddr, 0, &fl6.saddr);

		if (ret)

			goto put;
@@ -477,6 +476,7 @@ int rdma_addr_find_dmac_by_grh(const union ib_gid *sgid, const union ib_gid *dgi 


	memset(&dev_addr, 0, sizeof(dev_addr));

	dev_addr.bound_dev_if = if_index;

	dev_addr.net = &init_net;



	ctx.addr = &dev_addr;

	init_completion(&ctx.comp);
@@ -511,6 +511,7 @@ int rdma_addr_find_smac_by_sgid(union ib_gid *sgid, u8 *smac, u16 *vlan_id) 
	rdma_gid2ip(&gid_addr._sockaddr, sgid);



	memset(&dev_addr, 0, sizeof(dev_addr));

	dev_addr.net = &init_net;

	ret = rdma_translate_ip(&gid_addr._sockaddr, &dev_addr, vlan_id);

	if (ret)

		return ret;

drivers/infiniband/core/cma.c

+1 −0
Original line number Diff line number Diff line
@@ -610,6 +610,7 @@ struct rdma_cm_id *rdma_create_id(rdma_cm_event_handler event_handler, 
	INIT_LIST_HEAD(&id_priv->listen_list);

	INIT_LIST_HEAD(&id_priv->mc_list);

	get_random_bytes(&id_priv->seq_num, sizeof id_priv->seq_num);

	id_priv->id.route.addr.dev_addr.net = &init_net;



	return &id_priv->id;

}

include/rdma/ib_addr.h

+15 −1
Original line number Diff line number Diff line
@@ -47,6 +47,7 @@ 
#include <rdma/ib_verbs.h>

#include <rdma/ib_pack.h>

#include <net/ipv6.h>

#include <net/net_namespace.h>



struct rdma_addr_client {

	atomic_t refcount;
@@ -64,6 +65,16 @@ void rdma_addr_register_client(struct rdma_addr_client *client); 
 */

void rdma_addr_unregister_client(struct rdma_addr_client *client);



/**

 * struct rdma_dev_addr - Contains resolved RDMA hardware addresses

 * @src_dev_addr:	Source MAC address.

 * @dst_dev_addr:	Destination MAC address.

 * @broadcast:		Broadcast address of the device.

 * @dev_type:		The interface hardware type of the device.

 * @bound_dev_if:	An optional device interface index.

 * @transport:		The transport type used.

 * @net:		Network namespace containing the bound_dev_if net_dev.

 */

struct rdma_dev_addr {

	unsigned char src_dev_addr[MAX_ADDR_LEN];

	unsigned char dst_dev_addr[MAX_ADDR_LEN];
@@ -71,11 +82,14 @@ struct rdma_dev_addr { 
	unsigned short dev_type;

	int bound_dev_if;

	enum rdma_transport_type transport;

	struct net *net;

};



/**

 * rdma_translate_ip - Translate a local IP address to an RDMA hardware

 *   address.

 *

 * The dev_addr->net field must be initialized.

 */

int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr,

		      u16 *vlan_id);
@@ -90,7 +104,7 @@ int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr, 
 * @dst_addr: The destination address to resolve.

 * @addr: A reference to a data location that will receive the resolved

 *   addresses.  The data location must remain valid until the callback has

 *   been invoked.

 *   been invoked. The net field of the addr struct must be valid.

 * @timeout_ms: Amount of time to wait for the address resolution to complete.

 * @callback: Call invoked once address resolution has completed, timed out,

 *   or been canceled.  A status of 0 indicates success.