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authorTejun Heo <tj@kernel.org>2015-12-07 23:38:52 +0100
committerDavid S. Miller <davem@davemloft.net>2015-12-09 04:02:33 +0100
commit2a56a1fec290bf0bc4676bbf4efdb3744953a3e7 (patch)
treec02ca93b96c4fa2c8aacf24f72f63d861794e567 /net/core
parentnetprio_cgroup: limit the maximum css->id to USHRT_MAX (diff)
downloadlinux-2a56a1fec290bf0bc4676bbf4efdb3744953a3e7.tar.xz
linux-2a56a1fec290bf0bc4676bbf4efdb3744953a3e7.zip
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>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/dev.c3
-rw-r--r--net/core/netclassid_cgroup.c4
-rw-r--r--net/core/netprio_cgroup.c3
-rw-r--r--net/core/scm.c4
-rw-r--r--net/core/sock.c15
5 files changed, 10 insertions, 19 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index e5c395473eba..8f705fcedb94 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2929,7 +2929,8 @@ static void skb_update_prio(struct sk_buff *skb)
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 2e4df84c34a1..e60ded46b3ac 100644
--- a/net/core/netclassid_cgroup.c
+++ b/net/core/netclassid_cgroup.c
@@ -62,8 +62,8 @@ static int update_classid_sock(const void *v, struct file *file, unsigned n)
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 2b9159b7a28a..de42aa7f6c77 100644
--- a/net/core/netprio_cgroup.c
+++ b/net/core/netprio_cgroup.c
@@ -223,7 +223,8 @@ static int update_netprio(const void *v, struct file *file, unsigned n)
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 8a1741b14302..14596fb37172 100644
--- a/net/core/scm.c
+++ b/net/core/scm.c
@@ -289,8 +289,8 @@ void scm_detach_fds(struct msghdr *msg, struct scm_cookie *scm)
/* 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 7965ef487375..947741dc43fa 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1393,17 +1393,6 @@ static void sk_prot_free(struct proto *prot, struct sock *sk)
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 @@ struct sock *sk_alloc(struct net *net, int family, gfp_t priority,
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;