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Commit 8d549c4f authored by Fan Du's avatar Fan Du Committed by Steffen Klassert
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xfrm: Using the right namespace to migrate key info



because the home agent could surely be run on a different
net namespace other than init_net. The original behavior
could lead into inconsistent of key info.

Signed-off-by: default avatarFan Du <fan.du@windriver.com>
Signed-off-by: default avatarSteffen Klassert <steffen.klassert@secunet.com>
parent e682adf0
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+1 −1
Original line number Diff line number Diff line
@@ -1581,7 +1581,7 @@ struct xfrm_state *xfrm_state_migrate(struct xfrm_state *x,
				      struct xfrm_migrate *m);
int xfrm_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
		 struct xfrm_migrate *m, int num_bundles,
		 struct xfrm_kmaddress *k);
		 struct xfrm_kmaddress *k, struct net *net);
#endif

int km_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport);
+2 −1
Original line number Diff line number Diff line
@@ -2485,6 +2485,7 @@ static int pfkey_migrate(struct sock *sk, struct sk_buff *skb,
	struct xfrm_selector sel;
	struct xfrm_migrate m[XFRM_MAX_DEPTH];
	struct xfrm_kmaddress k;
	struct net *net = sock_net(sk);

	if (!present_and_same_family(ext_hdrs[SADB_EXT_ADDRESS_SRC - 1],
				     ext_hdrs[SADB_EXT_ADDRESS_DST - 1]) ||
@@ -2558,7 +2559,7 @@ static int pfkey_migrate(struct sock *sk, struct sk_buff *skb,
	}

	return xfrm_migrate(&sel, dir, XFRM_POLICY_TYPE_MAIN, m, i,
			    kma ? &k : NULL);
			    kma ? &k : NULL, net);

 out:
	return err;
+5 −5
Original line number Diff line number Diff line
@@ -3076,14 +3076,14 @@ static bool xfrm_migrate_selector_match(const struct xfrm_selector *sel_cmp,
}

static struct xfrm_policy * xfrm_migrate_policy_find(const struct xfrm_selector *sel,
						     u8 dir, u8 type)
						     u8 dir, u8 type, struct net *net)
{
	struct xfrm_policy *pol, *ret = NULL;
	struct hlist_head *chain;
	u32 priority = ~0U;

	read_lock_bh(&xfrm_policy_lock);
	chain = policy_hash_direct(&init_net, &sel->daddr, &sel->saddr, sel->family, dir);
	chain = policy_hash_direct(net, &sel->daddr, &sel->saddr, sel->family, dir);
	hlist_for_each_entry(pol, chain, bydst) {
		if (xfrm_migrate_selector_match(sel, &pol->selector) &&
		    pol->type == type) {
@@ -3092,7 +3092,7 @@ static struct xfrm_policy * xfrm_migrate_policy_find(const struct xfrm_selector
			break;
		}
	}
	chain = &init_net.xfrm.policy_inexact[dir];
	chain = &net->xfrm.policy_inexact[dir];
	hlist_for_each_entry(pol, chain, bydst) {
		if (xfrm_migrate_selector_match(sel, &pol->selector) &&
		    pol->type == type &&
@@ -3216,7 +3216,7 @@ static int xfrm_migrate_check(const struct xfrm_migrate *m, int num_migrate)

int xfrm_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
		 struct xfrm_migrate *m, int num_migrate,
		 struct xfrm_kmaddress *k)
		 struct xfrm_kmaddress *k, struct net *net)
{
	int i, err, nx_cur = 0, nx_new = 0;
	struct xfrm_policy *pol = NULL;
@@ -3229,7 +3229,7 @@ int xfrm_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
		goto out;

	/* Stage 1 - find policy */
	if ((pol = xfrm_migrate_policy_find(sel, dir, type)) == NULL) {
	if ((pol = xfrm_migrate_policy_find(sel, dir, type, net)) == NULL) {
		err = -ENOENT;
		goto out;
	}
+2 −1
Original line number Diff line number Diff line
@@ -2137,6 +2137,7 @@ static int xfrm_do_migrate(struct sk_buff *skb, struct nlmsghdr *nlh,
	u8 type;
	int err;
	int n = 0;
	struct net *net = sock_net(skb->sk);

	if (attrs[XFRMA_MIGRATE] == NULL)
		return -EINVAL;
@@ -2154,7 +2155,7 @@ static int xfrm_do_migrate(struct sk_buff *skb, struct nlmsghdr *nlh,
	if (!n)
		return 0;

	xfrm_migrate(&pi->sel, pi->dir, type, m, n, kmp);
	xfrm_migrate(&pi->sel, pi->dir, type, m, n, kmp, net);

	return 0;
}