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authorDavid S. Miller <davem@davemloft.net>2018-03-13 10:38:07 -0400
committerDavid S. Miller <davem@davemloft.net>2018-03-13 10:38:07 -0400
commitd2ddf628e90ffb92b411757eeb8655314371b879 (patch)
tree23450d6bb643bc348bb3199d506bbe29f77dcaa1 /net/xfrm
parent5a9f8df68ee6927f21dd3f2c75c16feb8b53a9e8 (diff)
parent0dcd7876029b58770f769cbb7b484e88e4a305e5 (diff)
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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec
Steffen Klassert says: ==================== pull request (net): ipsec 2018-03-13 1) Refuse to insert 32 bit userspace socket policies on 64 bit systems like we do it for standard policies. We don't have a compat layer, so inserting socket policies from 32 bit userspace will lead to a broken configuration. 2) Make the policy hold queue work without the flowcache. Dummy bundles are not chached anymore, so we need to generate a new one on each lookup as long as the SAs are not yet in place. 3) Fix the validation of the esn replay attribute. The The sanity check in verify_replay() is bypassed if the XFRM_STATE_ESN flag is not set. Fix this by doing the sanity check uncoditionally. From Florian Westphal. 4) After most of the dst_entry garbage collection code is removed, we may leak xfrm_dst entries as they are neither cached nor tracked somewhere. Fix this by reusing the 'uncached_list' to track xfrm_dst entries too. From Xin Long. 5) Fix a rcu_read_lock/rcu_read_unlock imbalance in xfrm_get_tos() From Xin Long. 6) Fix an infinite loop in xfrm_get_dst_nexthop. On transport mode we fetch the child dst_entry after we continue, so this pointer is never updated. Fix this by fetching it before we continue. 7) Fix ESN sequence number gap after IPsec GSO packets. We accidentally increment the sequence number counter on the xfrm_state by one packet too much in the ESN case. Fix this by setting the sequence number to the correct value. 8) Reset the ethernet protocol after decapsulation only if a mac header was set. Otherwise it breaks configurations with TUN devices. From Yossi Kuperman. 9) Fix __this_cpu_read() usage in preemptible code. Use this_cpu_read() instead in ipcomp_alloc_tfms(). From Greg Hackmann. Please pull or let me know if there are problems. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/xfrm')
-rw-r--r--net/xfrm/xfrm_ipcomp.c2
-rw-r--r--net/xfrm/xfrm_policy.c13
-rw-r--r--net/xfrm/xfrm_replay.c2
-rw-r--r--net/xfrm/xfrm_state.c5
-rw-r--r--net/xfrm/xfrm_user.c21
5 files changed, 23 insertions, 20 deletions
diff --git a/net/xfrm/xfrm_ipcomp.c b/net/xfrm/xfrm_ipcomp.c
index ccfdc7115a83..a00ec715aa46 100644
--- a/net/xfrm/xfrm_ipcomp.c
+++ b/net/xfrm/xfrm_ipcomp.c
@@ -283,7 +283,7 @@ static struct crypto_comp * __percpu *ipcomp_alloc_tfms(const char *alg_name)
struct crypto_comp *tfm;
/* This can be any valid CPU ID so we don't need locking. */
- tfm = __this_cpu_read(*pos->tfms);
+ tfm = this_cpu_read(*pos->tfms);
if (!strcmp(crypto_comp_name(tfm), alg_name)) {
pos->users++;
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 7a23078132cf..625b3fca5704 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -1458,10 +1458,13 @@ xfrm_tmpl_resolve(struct xfrm_policy **pols, int npols, const struct flowi *fl,
static int xfrm_get_tos(const struct flowi *fl, int family)
{
const struct xfrm_policy_afinfo *afinfo;
- int tos = 0;
+ int tos;
afinfo = xfrm_policy_get_afinfo(family);
- tos = afinfo ? afinfo->get_tos(fl) : 0;
+ if (!afinfo)
+ return 0;
+
+ tos = afinfo->get_tos(fl);
rcu_read_unlock();
@@ -1891,7 +1894,7 @@ static void xfrm_policy_queue_process(struct timer_list *t)
spin_unlock(&pq->hold_queue.lock);
dst_hold(xfrm_dst_path(dst));
- dst = xfrm_lookup(net, xfrm_dst_path(dst), &fl, sk, 0);
+ dst = xfrm_lookup(net, xfrm_dst_path(dst), &fl, sk, XFRM_LOOKUP_QUEUE);
if (IS_ERR(dst))
goto purge_queue;
@@ -2729,14 +2732,14 @@ static const void *xfrm_get_dst_nexthop(const struct dst_entry *dst,
while (dst->xfrm) {
const struct xfrm_state *xfrm = dst->xfrm;
+ dst = xfrm_dst_child(dst);
+
if (xfrm->props.mode == XFRM_MODE_TRANSPORT)
continue;
if (xfrm->type->flags & XFRM_TYPE_REMOTE_COADDR)
daddr = xfrm->coaddr;
else if (!(xfrm->type->flags & XFRM_TYPE_LOCAL_COADDR))
daddr = &xfrm->id.daddr;
-
- dst = xfrm_dst_child(dst);
}
return daddr;
}
diff --git a/net/xfrm/xfrm_replay.c b/net/xfrm/xfrm_replay.c
index 1d38c6acf8af..9e3a5e85f828 100644
--- a/net/xfrm/xfrm_replay.c
+++ b/net/xfrm/xfrm_replay.c
@@ -660,7 +660,7 @@ static int xfrm_replay_overflow_offload_esn(struct xfrm_state *x, struct sk_buff
} else {
XFRM_SKB_CB(skb)->seq.output.low = oseq + 1;
XFRM_SKB_CB(skb)->seq.output.hi = oseq_hi;
- xo->seq.low = oseq = oseq + 1;
+ xo->seq.low = oseq + 1;
xo->seq.hi = oseq_hi;
oseq += skb_shinfo(skb)->gso_segs;
}
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 54e21f19d722..f9d2f2233f09 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -2056,6 +2056,11 @@ int xfrm_user_policy(struct sock *sk, int optname, u8 __user *optval, int optlen
struct xfrm_mgr *km;
struct xfrm_policy *pol = NULL;
+#ifdef CONFIG_COMPAT
+ if (in_compat_syscall())
+ return -EOPNOTSUPP;
+#endif
+
if (!optval && !optlen) {
xfrm_sk_policy_insert(sk, XFRM_POLICY_IN, NULL);
xfrm_sk_policy_insert(sk, XFRM_POLICY_OUT, NULL);
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 7f52b8eb177d..080035f056d9 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -121,22 +121,17 @@ static inline int verify_replay(struct xfrm_usersa_info *p,
struct nlattr *rt = attrs[XFRMA_REPLAY_ESN_VAL];
struct xfrm_replay_state_esn *rs;
- if (p->flags & XFRM_STATE_ESN) {
- if (!rt)
- return -EINVAL;
+ if (!rt)
+ return (p->flags & XFRM_STATE_ESN) ? -EINVAL : 0;
- rs = nla_data(rt);
+ rs = nla_data(rt);
- if (rs->bmp_len > XFRMA_REPLAY_ESN_MAX / sizeof(rs->bmp[0]) / 8)
- return -EINVAL;
-
- if (nla_len(rt) < (int)xfrm_replay_state_esn_len(rs) &&
- nla_len(rt) != sizeof(*rs))
- return -EINVAL;
- }
+ if (rs->bmp_len > XFRMA_REPLAY_ESN_MAX / sizeof(rs->bmp[0]) / 8)
+ return -EINVAL;
- if (!rt)
- return 0;
+ if (nla_len(rt) < (int)xfrm_replay_state_esn_len(rs) &&
+ nla_len(rt) != sizeof(*rs))
+ return -EINVAL;
/* As only ESP and AH support ESN feature. */
if ((p->id.proto != IPPROTO_ESP) && (p->id.proto != IPPROTO_AH))