netns xfrm: pass netns with KM notifications

SA and SPD flush are executed with NULL SA and SPD respectively, for
these cases pass netns explicitly from userspace socket.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 7 insertions, 2 deletions

diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index e027179e8199..52e784fa2c50 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -256,6 +256,7 @@ struct km_event
         u32     seq;
         u32     pid;
         u32     event;
+        struct net *net;
 };
 
 struct net_device;
diff --git a/net/key/af_key.c b/net/key/af_key.c
index a0d849848ddd..ea7755ab7e6a 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -1739,6 +1739,7 @@ static int pfkey_flush(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hd
         c.seq = hdr->sadb_msg_seq;
         c.pid = hdr->sadb_msg_pid;
         c.event = XFRM_MSG_FLUSHSA;
+        c.net = &init_net;
         km_state_notify(NULL, &c);
 
         return 0;
@@ -2693,6 +2694,7 @@ static int pfkey_spdflush(struct sock *sk, struct sk_buff *skb, struct sadb_msg
         c.event = XFRM_MSG_FLUSHPOLICY;
         c.pid = hdr->sadb_msg_pid;
         c.seq = hdr->sadb_msg_seq;
+        c.net = &init_net;
         km_policy_notify(NULL, 0, &c);
 
         return 0;
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index ab8b138e5e2f..3e32ec2ea1ad 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -1418,6 +1418,7 @@ static int xfrm_flush_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
         c.event = nlh->nlmsg_type;
         c.seq = nlh->nlmsg_seq;
         c.pid = nlh->nlmsg_pid;
+        c.net = net;
         km_state_notify(NULL, &c);
 
         return 0;
@@ -1569,6 +1570,7 @@ static int xfrm_flush_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
         c.event = nlh->nlmsg_type;
         c.seq = nlh->nlmsg_seq;
         c.pid = nlh->nlmsg_pid;
+        c.net = net;
         km_policy_notify(NULL, 0, &c);
         return 0;
 }
@@ -2084,7 +2086,7 @@ static int xfrm_aevent_state_notify(struct xfrm_state *x, struct km_event *c)
 
 static int xfrm_notify_sa_flush(struct km_event *c)
 {
-        struct net *net = &init_net;
+        struct net *net = c->net;
         struct xfrm_usersa_flush *p;
         struct nlmsghdr *nlh;
         struct sk_buff *skb;
@@ -2446,7 +2448,7 @@ nlmsg_failure:
 
 static int xfrm_notify_policy_flush(struct km_event *c)
 {
-        struct net *net = &init_net;
+        struct net *net = c->net;
         struct nlmsghdr *nlh;
         struct sk_buff *skb;