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Diffstat (limited to 'net/openvswitch/flow_netlink.c')
-rw-r--r--net/openvswitch/flow_netlink.c74
1 files changed, 55 insertions, 19 deletions
diff --git a/net/openvswitch/flow_netlink.c b/net/openvswitch/flow_netlink.c
index 9d3e50c4d29f..ec0689ddc635 100644
--- a/net/openvswitch/flow_netlink.c
+++ b/net/openvswitch/flow_netlink.c
@@ -2503,28 +2503,42 @@ static int validate_and_copy_dec_ttl(struct net *net,
__be16 eth_type, __be16 vlan_tci,
u32 mpls_label_count, bool log)
{
- int start, err;
- u32 nested = true;
+ const struct nlattr *attrs[OVS_DEC_TTL_ATTR_MAX + 1];
+ int start, action_start, err, rem;
+ const struct nlattr *a, *actions;
+
+ memset(attrs, 0, sizeof(attrs));
+ nla_for_each_nested(a, attr, rem) {
+ int type = nla_type(a);
- if (!nla_len(attr))
- return ovs_nla_add_action(sfa, OVS_ACTION_ATTR_DEC_TTL,
- NULL, 0, log);
+ /* Ignore unknown attributes to be future proof. */
+ if (type > OVS_DEC_TTL_ATTR_MAX)
+ continue;
+
+ if (!type || attrs[type])
+ return -EINVAL;
+
+ attrs[type] = a;
+ }
+
+ actions = attrs[OVS_DEC_TTL_ATTR_ACTION];
+ if (rem || !actions || (nla_len(actions) && nla_len(actions) < NLA_HDRLEN))
+ return -EINVAL;
start = add_nested_action_start(sfa, OVS_ACTION_ATTR_DEC_TTL, log);
if (start < 0)
return start;
- err = ovs_nla_add_action(sfa, OVS_DEC_TTL_ATTR_ACTION, &nested,
- sizeof(nested), log);
-
- if (err)
- return err;
+ action_start = add_nested_action_start(sfa, OVS_DEC_TTL_ATTR_ACTION, log);
+ if (action_start < 0)
+ return start;
- err = __ovs_nla_copy_actions(net, attr, key, sfa, eth_type,
+ err = __ovs_nla_copy_actions(net, actions, key, sfa, eth_type,
vlan_tci, mpls_label_count, log);
if (err)
return err;
+ add_nested_action_end(*sfa, action_start);
add_nested_action_end(*sfa, start);
return 0;
}
@@ -3487,20 +3501,42 @@ out:
static int dec_ttl_action_to_attr(const struct nlattr *attr,
struct sk_buff *skb)
{
- int err = 0, rem = nla_len(attr);
- struct nlattr *start;
+ struct nlattr *start, *action_start;
+ const struct nlattr *a;
+ int err = 0, rem;
start = nla_nest_start_noflag(skb, OVS_ACTION_ATTR_DEC_TTL);
-
if (!start)
return -EMSGSIZE;
- err = ovs_nla_put_actions(nla_data(attr), rem, skb);
- if (err)
- nla_nest_cancel(skb, start);
- else
- nla_nest_end(skb, start);
+ nla_for_each_attr(a, nla_data(attr), nla_len(attr), rem) {
+ switch (nla_type(a)) {
+ case OVS_DEC_TTL_ATTR_ACTION:
+
+ action_start = nla_nest_start_noflag(skb, OVS_DEC_TTL_ATTR_ACTION);
+ if (!action_start) {
+ err = -EMSGSIZE;
+ goto out;
+ }
+
+ err = ovs_nla_put_actions(nla_data(a), nla_len(a), skb);
+ if (err)
+ goto out;
+
+ nla_nest_end(skb, action_start);
+ break;
+ default:
+ /* Ignore all other option to be future compatible */
+ break;
+ }
+ }
+
+ nla_nest_end(skb, start);
+ return 0;
+
+out:
+ nla_nest_cancel(skb, start);
return err;
}