net: wrap sock->sk_cgrp_prioidx and ->sk_classid inside a struct
Introduce sock->sk_cgrp_data which is a struct sock_cgroup_data.
->sk_cgroup_prioidx and ->sk_classid are moved into it. The struct
and its accessors are defined in cgroup-defs.h. This is to prepare
for overloading the fields with a cgroup pointer.
This patch mostly performs equivalent conversions but the followings
are noteworthy.
* Equality test before updating classid is removed from
sock_update_classid(). This shouldn't make any noticeable
difference and a similar test will be implemented on the helper side
later.
* sock_update_netprioidx() now takes struct sock_cgroup_data and can
be moved to netprio_cgroup.h without causing include dependency
loop. Moved.
* The dummy version of sock_update_netprioidx() converted to a static
inline function while at it.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/dev.c b/net/core/dev.c
index e5c3954..8f705fc 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2929,7 +2929,8 @@
struct netprio_map *map = rcu_dereference_bh(skb->dev->priomap);
if (!skb->priority && skb->sk && map) {
- unsigned int prioidx = skb->sk->sk_cgrp_prioidx;
+ unsigned int prioidx =
+ sock_cgroup_prioidx(&skb->sk->sk_cgrp_data);
if (prioidx < map->priomap_len)
skb->priority = map->priomap[prioidx];
diff --git a/net/core/netclassid_cgroup.c b/net/core/netclassid_cgroup.c
index 2e4df84..e60ded4 100644
--- a/net/core/netclassid_cgroup.c
+++ b/net/core/netclassid_cgroup.c
@@ -62,8 +62,8 @@
struct socket *sock = sock_from_file(file, &err);
if (sock)
- sock->sk->sk_classid = (u32)(unsigned long)v;
-
+ sock_cgroup_set_classid(&sock->sk->sk_cgrp_data,
+ (unsigned long)v);
return 0;
}
diff --git a/net/core/netprio_cgroup.c b/net/core/netprio_cgroup.c
index 2b9159b..de42aa7 100644
--- a/net/core/netprio_cgroup.c
+++ b/net/core/netprio_cgroup.c
@@ -223,7 +223,8 @@
int err;
struct socket *sock = sock_from_file(file, &err);
if (sock)
- sock->sk->sk_cgrp_prioidx = (u32)(unsigned long)v;
+ sock_cgroup_set_prioidx(&sock->sk->sk_cgrp_data,
+ (unsigned long)v);
return 0;
}
diff --git a/net/core/scm.c b/net/core/scm.c
index 8a1741b..14596fb 100644
--- a/net/core/scm.c
+++ b/net/core/scm.c
@@ -289,8 +289,8 @@
/* Bump the usage count and install the file. */
sock = sock_from_file(fp[i], &err);
if (sock) {
- sock_update_netprioidx(sock->sk);
- sock_update_classid(sock->sk);
+ sock_update_netprioidx(&sock->sk->sk_cgrp_data);
+ sock_update_classid(&sock->sk->sk_cgrp_data);
}
fd_install(new_fd, get_file(fp[i]));
}
diff --git a/net/core/sock.c b/net/core/sock.c
index 7965ef4..947741d 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1393,17 +1393,6 @@
module_put(owner);
}
-#if IS_ENABLED(CONFIG_CGROUP_NET_PRIO)
-void sock_update_netprioidx(struct sock *sk)
-{
- if (in_interrupt())
- return;
-
- sk->sk_cgrp_prioidx = task_netprioidx(current);
-}
-EXPORT_SYMBOL_GPL(sock_update_netprioidx);
-#endif
-
/**
* sk_alloc - All socket objects are allocated here
* @net: the applicable net namespace
@@ -1432,8 +1421,8 @@
sock_net_set(sk, net);
atomic_set(&sk->sk_wmem_alloc, 1);
- sock_update_classid(sk);
- sock_update_netprioidx(sk);
+ sock_update_classid(&sk->sk_cgrp_data);
+ sock_update_netprioidx(&sk->sk_cgrp_data);
}
return sk;