On 17/01/2025 13:16, Sabrina Dubroca wrote:
2025-01-13, 10:31:28 +0100, Antonio Quartulli wrote:
static bool ovpn_encrypt_one(struct ovpn_peer *peer, struct sk_buff *skb)
{
- ovpn_skb_cb(skb)->peer = peer;
+ struct ovpn_crypto_key_slot *ks;
+
+ if (unlikely(skb->ip_summed == CHECKSUM_PARTIAL &&
+ skb_checksum_help(skb))) {
+ net_warn_ratelimited("%s: cannot compute checksum for outgoing packet for peer %u\n",
+ netdev_name(peer->ovpn->dev), peer->id);
+ return false;
+ }
+
+ /* get primary key to be used for encrypting data */
+ ks = ovpn_crypto_key_slot_primary(&peer->crypto);
+ if (unlikely(!ks))
+ return false;
/* take a reference to the peer because the crypto code may run async.
* ovpn_encrypt_post() will release it upon completion
@@ -118,7 +244,8 @@ static bool ovpn_encrypt_one(struct ovpn_peer *peer, struct sk_buff *skb)
Adding in the few lines that got snipped:
/* take a reference to the peer because the crypto code may run async.
* ovpn_encrypt_post() will release it upon completion
*/
if (unlikely(!ovpn_peer_hold(peer))) {
DEBUG_NET_WARN_ON_ONCE(1);
return false;
}
This should never happen, but just in case, we'd want
ovpn_crypto_key_slot_put() here.
ACK
return false;
}
--
Antonio Quartulli
OpenVPN Inc.
