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UPSTREAM: Revert "xfrm: state and policy should fail if XFRMA_IF_ID 0"

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commit a3d9001b4e upstream.

This reverts commit 68ac0f3810 because ID
0 was meant to be used for configuring the policy/state without
matching for a specific interface (e.g., Cilium is affected, see
https://github.com/cilium/cilium/pull/18789 and
https://github.com/cilium/cilium/pull/19019).

Bug: 220227367
Signed-off-by: Kai Lueke <kailueke@linux.microsoft.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit bdf0316982)
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I0d6c17e14d562cef2a4d76b7c4299cf0dd3641d1
This commit is contained in:
Kai Lueke
2022-03-03 15:55:10 +01:00
committed by Greg Kroah-Hartman
parent ff0000fe82
commit 87c1f135bf
1 changed files with 3 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
net/xfrm/xfrm_user.c
View File

@@ -621,13 +621,8 @@ static struct xfrm_state *xfrm_state_construct(struct net *net,
xfrm_smark_init(attrs, &x->props.smark);
if (attrs[XFRMA_IF_ID]) {
if (attrs[XFRMA_IF_ID])
x->if_id = nla_get_u32(attrs[XFRMA_IF_ID]);
if (!x->if_id) {
err = -EINVAL;
goto error;
}
}
err = __xfrm_init_state(x, false, attrs[XFRMA_OFFLOAD_DEV]);
if (err)
@@ -1358,13 +1353,8 @@ static int xfrm_alloc_userspi(struct sk_buff *skb, struct nlmsghdr *nlh,
mark = xfrm_mark_get(attrs, &m);
if (attrs[XFRMA_IF_ID]) {
if (attrs[XFRMA_IF_ID])
if_id = nla_get_u32(attrs[XFRMA_IF_ID]);
if (!if_id) {
err = -EINVAL;
goto out_noput;
}
}
if (p->info.seq) {
x = xfrm_find_acq_byseq(net, mark, p->info.seq);
@@ -1677,13 +1667,8 @@ static struct xfrm_policy *xfrm_policy_construct(struct net *net, struct xfrm_us
xfrm_mark_get(attrs, &xp->mark);
if (attrs[XFRMA_IF_ID]) {
if (attrs[XFRMA_IF_ID])
xp->if_id = nla_get_u32(attrs[XFRMA_IF_ID]);
if (!xp->if_id) {
err = -EINVAL;
goto error;
}
}
return xp;
error: