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Date: Thu, 6 Oct 2022 04:59:21 -0400
From: yanjun.zhu@...ux.dev
To: jgg@...pe.ca, leon@...nel.org, zyjzyj2000@...il.com,
linux-rdma@...r.kernel.org, yanjun.zhu@...ux.dev,
netdev@...r.kernel.org, davem@...emloft.net
Subject: [PATCHv2 6/6] RDMA/rxe: add the support of net namespace
From: Zhu Yanjun <yanjun.zhu@...ux.dev>
Originally init_net is used to indicate the current net namespace.
Currently more net namespaces are supported.
Signed-off-by: Zhu Yanjun <yanjun.zhu@...ux.dev>
---
drivers/infiniband/sw/rxe/rxe.c | 2 +-
drivers/infiniband/sw/rxe/rxe_net.c | 32 +++++++++++++++++------------
drivers/infiniband/sw/rxe/rxe_net.h | 2 +-
3 files changed, 21 insertions(+), 15 deletions(-)
diff --git a/drivers/infiniband/sw/rxe/rxe.c b/drivers/infiniband/sw/rxe/rxe.c
index 933d8e129c47..927c513ace81 100644
--- a/drivers/infiniband/sw/rxe/rxe.c
+++ b/drivers/infiniband/sw/rxe/rxe.c
@@ -196,7 +196,7 @@ static int rxe_newlink(const char *ibdev_name, struct net_device *ndev)
goto err;
}
- err = rxe_net_init();
+ err = rxe_net_init(ndev);
if (err)
return err;
diff --git a/drivers/infiniband/sw/rxe/rxe_net.c b/drivers/infiniband/sw/rxe/rxe_net.c
index 64b11faccfb4..b5955d0c284a 100644
--- a/drivers/infiniband/sw/rxe/rxe_net.c
+++ b/drivers/infiniband/sw/rxe/rxe_net.c
@@ -31,7 +31,7 @@ static struct dst_entry *rxe_find_route4(struct net_device *ndev,
memcpy(&fl.daddr, daddr, sizeof(*daddr));
fl.flowi4_proto = IPPROTO_UDP;
- rt = ip_route_output_key(&init_net, &fl);
+ rt = ip_route_output_key(dev_net(ndev), &fl);
if (IS_ERR(rt)) {
pr_err_ratelimited("no route to %pI4\n", &daddr->s_addr);
return NULL;
@@ -54,7 +54,8 @@ static struct dst_entry *rxe_find_route6(struct net_device *ndev,
struct sock *sk;
rcu_read_lock();
- sk = udp6_lib_lookup(&init_net, NULL, 0, &in6addr_any, htons(ROCE_V2_UDP_DPORT), 0);
+ sk = udp6_lib_lookup(dev_net(ndev), NULL, 0, &in6addr_any,
+ htons(ROCE_V2_UDP_DPORT), 0);
rcu_read_unlock();
if (!sk) {
pr_info("file: %s +%d, error\n", __FILE__, __LINE__);
@@ -546,9 +547,13 @@ int rxe_net_add(const char *ibdev_name, struct net_device *ndev)
void rxe_net_del(struct ib_device *dev)
{
struct sock *sk;
+ struct rxe_dev *rdev;
+
+ rdev = container_of(dev, struct rxe_dev, ib_dev);
rcu_read_lock();
- sk = udp4_lib_lookup(&init_net, 0, 0, htonl(INADDR_ANY), htons(ROCE_V2_UDP_DPORT), 0);
+ sk = udp4_lib_lookup(dev_net(rdev->ndev), 0, 0, htonl(INADDR_ANY),
+ htons(ROCE_V2_UDP_DPORT), 0);
rcu_read_unlock();
if (!sk)
return;
@@ -561,7 +566,8 @@ void rxe_net_del(struct ib_device *dev)
rxe_release_udp_tunnel(sk->sk_socket);
rcu_read_lock();
- sk = udp6_lib_lookup(&init_net, NULL, 0, &in6addr_any, htons(ROCE_V2_UDP_DPORT), 0);
+ sk = udp6_lib_lookup(dev_net(rdev->ndev), NULL, 0, &in6addr_any,
+ htons(ROCE_V2_UDP_DPORT), 0);
rcu_read_unlock();
if (!sk)
return;
@@ -665,19 +671,19 @@ static struct notifier_block rxe_net_notifier = {
.notifier_call = rxe_notify,
};
-static int rxe_net_ipv4_init(void)
+static int rxe_net_ipv4_init(struct net_device *ndev)
{
struct sock *sk;
struct socket *sock;
rcu_read_lock();
- sk = udp4_lib_lookup(&init_net, 0, 0, htonl(INADDR_ANY),
+ sk = udp4_lib_lookup(dev_net(ndev), 0, 0, htonl(INADDR_ANY),
htons(ROCE_V2_UDP_DPORT), 0);
rcu_read_unlock();
if (sk)
return 0;
- sock = rxe_setup_udp_tunnel(&init_net, htons(ROCE_V2_UDP_DPORT), false);
+ sock = rxe_setup_udp_tunnel(dev_net(ndev), htons(ROCE_V2_UDP_DPORT), false);
if (IS_ERR(sock)) {
pr_err("Failed to create IPv4 UDP tunnel\n");
return -1;
@@ -686,20 +692,20 @@ static int rxe_net_ipv4_init(void)
return 0;
}
-static int rxe_net_ipv6_init(void)
+static int rxe_net_ipv6_init(struct net_device *ndev)
{
#if IS_ENABLED(CONFIG_IPV6)
struct sock *sk;
struct socket *sock;
rcu_read_lock();
- sk = udp6_lib_lookup(&init_net, NULL, 0, &in6addr_any,
+ sk = udp6_lib_lookup(dev_net(ndev), NULL, 0, &in6addr_any,
htons(ROCE_V2_UDP_DPORT), 0);
rcu_read_unlock();
if (sk)
return 0;
- sock = rxe_setup_udp_tunnel(&init_net, htons(ROCE_V2_UDP_DPORT), true);
+ sock = rxe_setup_udp_tunnel(dev_net(ndev), htons(ROCE_V2_UDP_DPORT), true);
if (PTR_ERR(sock) == -EAFNOSUPPORT) {
pr_warn("IPv6 is not supported, can not create a UDPv6 socket\n");
return 0;
@@ -731,14 +737,14 @@ void rxe_net_exit(void)
unregister_netdevice_notifier(&rxe_net_notifier);
}
-int rxe_net_init(void)
+int rxe_net_init(struct net_device *ndev)
{
int err;
- err = rxe_net_ipv4_init();
+ err = rxe_net_ipv4_init(ndev);
if (err)
return err;
- err = rxe_net_ipv6_init();
+ err = rxe_net_ipv6_init(ndev);
if (err)
goto err_out;
return 0;
diff --git a/drivers/infiniband/sw/rxe/rxe_net.h b/drivers/infiniband/sw/rxe/rxe_net.h
index 027b20e1bab6..56249677d692 100644
--- a/drivers/infiniband/sw/rxe/rxe_net.h
+++ b/drivers/infiniband/sw/rxe/rxe_net.h
@@ -15,7 +15,7 @@ int rxe_net_add(const char *ibdev_name, struct net_device *ndev);
void rxe_net_del(struct ib_device *dev);
int rxe_register_notifier(void);
-int rxe_net_init(void);
+int rxe_net_init(struct net_device *ndev);
void rxe_net_exit(void);
#endif /* RXE_NET_H */
--
2.27.0
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