diff options
Diffstat (limited to 'src/libcharon/sa/ikev2/tasks/ike_natd.c')
| -rw-r--r-- | src/libcharon/sa/ikev2/tasks/ike_natd.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/src/libcharon/sa/ikev2/tasks/ike_natd.c b/src/libcharon/sa/ikev2/tasks/ike_natd.c index 0a93db9ed..4fc968f25 100644 --- a/src/libcharon/sa/ikev2/tasks/ike_natd.c +++ b/src/libcharon/sa/ikev2/tasks/ike_natd.c @@ -78,6 +78,19 @@ struct private_ike_natd_t { bool mapping_changed; }; +/** + * Check if UDP encapsulation has to be forced either by config or required + * by the kernel interface + */ +static bool force_encap(ike_cfg_t *ike_cfg) +{ + if (!ike_cfg->force_encap(ike_cfg)) + { + return hydra->kernel_interface->get_features(hydra->kernel_interface) & + KERNEL_REQUIRE_UDP_ENCAPSULATION; + } + return TRUE; +} /** * Build NAT detection hash for a host @@ -147,7 +160,7 @@ static notify_payload_t *build_natd_payload(private_ike_natd_t *this, ike_sa_id = this->ike_sa->get_id(this->ike_sa); config = this->ike_sa->get_ike_cfg(this->ike_sa); - if (config->force_encap(config) && type == NAT_DETECTION_SOURCE_IP) + if (force_encap(config) && type == NAT_DETECTION_SOURCE_IP) { hash = generate_natd_hash_faked(this); } @@ -256,7 +269,7 @@ static void process_payloads(private_ike_natd_t *this, message_t *message) !this->src_matched); config = this->ike_sa->get_ike_cfg(this->ike_sa); if (this->dst_matched && this->src_matched && - config->force_encap(config)) + force_encap(config)) { this->ike_sa->set_condition(this->ike_sa, COND_NAT_FAKE, TRUE); } @@ -316,7 +329,7 @@ METHOD(task_t, build_i, status_t, * 3. Include all possbile addresses */ host = message->get_source(message); - if (!host->is_anyaddr(host) || ike_cfg->force_encap(ike_cfg)) + if (!host->is_anyaddr(host) || force_encap(ike_cfg)) { /* 1. or if we force UDP encap, as it doesn't matter if it's %any */ notify = build_natd_payload(this, NAT_DETECTION_SOURCE_IP, host); if (notify) |