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netns xfrm: add struct xfrm_policy::xp_net

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Again, to avoid complications with passing netns when not necessary.
Again, ->xp_net is set-once field, once set it never changes.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexey Dobriyan 2008-11-25 17:21:45 -08:00 committed by David S. Miller
parent 50a30657fd
commit 0331b1f383
4 changed files with 16 additions and 7 deletions
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10
include/net/xfrm.h
View file

@ -475,6 +475,9 @@ struct xfrm_policy_walk {
struct xfrm_policy
{
#ifdef CONFIG_NET_NS
struct net *xp_net;
#endif
struct hlist_node bydst;
struct hlist_node byidx;
@ -499,6 +502,11 @@ struct xfrm_policy
struct xfrm_tmpl xfrm_vec[XFRM_MAX_DEPTH];
};
static inline struct net *xp_net(struct xfrm_policy *xp)
{
return read_pnet(&xp->xp_net);
}
struct xfrm_kmaddress {
xfrm_address_t local;
xfrm_address_t remote;
@ -1425,7 +1433,7 @@ static inline int xfrm4_udp_encap_rcv(struct sock *sk, struct sk_buff *skb)
}
#endif
struct xfrm_policy *xfrm_policy_alloc(gfp_t gfp);
struct xfrm_policy *xfrm_policy_alloc(struct net *net, gfp_t gfp);
extern void xfrm_policy_walk_init(struct xfrm_policy_walk *walk, u8 type);
extern int xfrm_policy_walk(struct xfrm_policy_walk *walk,

4
net/key/af_key.c
View file

@ -2174,7 +2174,7 @@ static int pfkey_spdadd(struct sock *sk, struct sk_buff *skb, struct sadb_msg *h
if (!pol->sadb_x_policy_dir || pol->sadb_x_policy_dir >= IPSEC_DIR_MAX)
return -EINVAL;
xp = xfrm_policy_alloc(GFP_KERNEL);
xp = xfrm_policy_alloc(&init_net, GFP_KERNEL);
if (xp == NULL)
return -ENOBUFS;
@ -3141,7 +3141,7 @@ static struct xfrm_policy *pfkey_compile_policy(struct sock *sk, int opt,
(!pol->sadb_x_policy_dir || pol->sadb_x_policy_dir > IPSEC_DIR_OUTBOUND))
return NULL;
xp = xfrm_policy_alloc(GFP_ATOMIC);
xp = xfrm_policy_alloc(&init_net, GFP_ATOMIC);
if (xp == NULL) {
*dir = -ENOBUFS;
return NULL;

5
net/xfrm/xfrm_policy.c
View file

@ -228,13 +228,14 @@ expired:
* SPD calls.
*/
struct xfrm_policy *xfrm_policy_alloc(gfp_t gfp)
struct xfrm_policy *xfrm_policy_alloc(struct net *net, gfp_t gfp)
{
struct xfrm_policy *policy;
policy = kzalloc(sizeof(struct xfrm_policy), gfp);
if (policy) {
write_pnet(&policy->xp_net, net);
INIT_LIST_HEAD(&policy->walk.all);
INIT_HLIST_NODE(&policy->bydst);
INIT_HLIST_NODE(&policy->byidx);
@ -1153,7 +1154,7 @@ int xfrm_sk_policy_insert(struct sock *sk, int dir, struct xfrm_policy *pol)
static struct xfrm_policy *clone_policy(struct xfrm_policy *old, int dir)
{
struct xfrm_policy *newp = xfrm_policy_alloc(GFP_ATOMIC);
struct xfrm_policy *newp = xfrm_policy_alloc(xp_net(old), GFP_ATOMIC);
if (newp) {
newp->selector = old->selector;

4
net/xfrm/xfrm_user.c
View file

@ -1080,7 +1080,7 @@ static void copy_to_user_policy(struct xfrm_policy *xp, struct xfrm_userpolicy_i
static struct xfrm_policy *xfrm_policy_construct(struct xfrm_userpolicy_info *p, struct nlattr **attrs, int *errp)
{
struct xfrm_policy *xp = xfrm_policy_alloc(GFP_KERNEL);
struct xfrm_policy *xp = xfrm_policy_alloc(&init_net, GFP_KERNEL);
int err;
if (!xp) {
@ -2291,7 +2291,7 @@ static struct xfrm_policy *xfrm_compile_policy(struct sock *sk, int opt,
if (p->dir > XFRM_POLICY_OUT)
return NULL;
xp = xfrm_policy_alloc(GFP_KERNEL);
xp = xfrm_policy_alloc(&init_net, GFP_KERNEL);
if (xp == NULL) {
*dir = -ENOBUFS;
return NULL;