diff options
Diffstat (limited to 'src/libcharon/sa/child_sa.c')
| -rw-r--r-- | src/libcharon/sa/child_sa.c | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/src/libcharon/sa/child_sa.c b/src/libcharon/sa/child_sa.c index 847cfc78f..a7d7b7305 100644 --- a/src/libcharon/sa/child_sa.c +++ b/src/libcharon/sa/child_sa.c @@ -731,6 +731,17 @@ METHOD(child_sa_t, install, status_t, } /** + * Check kernel interface if policy updates are required + */ +static bool require_policy_update() +{ + kernel_feature_t f; + + f = hydra->kernel_interface->get_features(hydra->kernel_interface); + return !(f & KERNEL_NO_POLICY_UPDATES); +} + +/** * Install 3 policies: out, in and forward */ static status_t install_policies_internal(private_child_sa_t *this, @@ -836,13 +847,21 @@ METHOD(child_sa_t, add_policies, status_t, priority = this->trap ? POLICY_PRIORITY_ROUTED : POLICY_PRIORITY_DEFAULT; + enumerator = create_policy_enumerator(this); + while (enumerator->enumerate(enumerator, &my_ts, &other_ts)) + { + my_sa.policy_count++; + other_sa.policy_count++; + } + enumerator->destroy(enumerator); + /* enumerate pairs of traffic selectors */ enumerator = create_policy_enumerator(this); while (enumerator->enumerate(enumerator, &my_ts, &other_ts)) { /* install outbound drop policy to avoid packets leaving unencrypted * when updating policies */ - if (priority == POLICY_PRIORITY_DEFAULT) + if (priority == POLICY_PRIORITY_DEFAULT && require_policy_update()) { status |= install_policies_internal(this, this->my_addr, this->other_addr, my_ts, other_ts, @@ -936,7 +955,7 @@ METHOD(child_sa_t, update, status_t, } } - if (this->config->install_policy(this->config)) + if (this->config->install_policy(this->config) && require_policy_update()) { ipsec_sa_cfg_t my_sa = { .mode = this->mode, @@ -1075,7 +1094,7 @@ METHOD(child_sa_t, destroy, void, while (enumerator->enumerate(enumerator, &my_ts, &other_ts)) { del_policies_internal(this, my_ts, other_ts, priority); - if (priority == POLICY_PRIORITY_DEFAULT) + if (priority == POLICY_PRIORITY_DEFAULT && require_policy_update()) { del_policies_internal(this, my_ts, other_ts, POLICY_PRIORITY_FALLBACK); |