diff options
| -rw-r--r-- | conf/plugins/kernel-netlink.opt | 3 | ||||
| -rw-r--r-- | src/libhydra/plugins/kernel_netlink/kernel_netlink_net.c | 19 |
2 files changed, 22 insertions, 0 deletions
diff --git a/conf/plugins/kernel-netlink.opt b/conf/plugins/kernel-netlink.opt index a8e421b6e..86cd92b9e 100644 --- a/conf/plugins/kernel-netlink.opt +++ b/conf/plugins/kernel-netlink.opt @@ -7,6 +7,9 @@ charon.plugins.kernel-netlink.fwmark = inverts the meaning (i.e. the rule only applies to packets that don't match the mark). +charon.plugins.kernel-netlink.mtu = 0 + MTU to set on installed routes, 0 to disable. + charon.plugins.kernel-netlink.roam_events = yes Whether to trigger roam events when interfaces, addresses or routes change. diff --git a/src/libhydra/plugins/kernel_netlink/kernel_netlink_net.c b/src/libhydra/plugins/kernel_netlink/kernel_netlink_net.c index 82b637d1e..1b9dd8410 100644 --- a/src/libhydra/plugins/kernel_netlink/kernel_netlink_net.c +++ b/src/libhydra/plugins/kernel_netlink/kernel_netlink_net.c @@ -478,6 +478,11 @@ struct private_kernel_netlink_net_t { * list with routing tables to be excluded from route lookup */ linked_list_t *rt_exclude; + + /** + * MTU to set on installed routes + */ + u_int32_t mtu; }; /** @@ -2055,6 +2060,7 @@ static status_t manage_srcroute(private_kernel_netlink_net_t *this, netlink_buf_t request; struct nlmsghdr *hdr; struct rtmsg *msg; + struct rtattr *rta; int ifindex; chunk_t chunk; @@ -2107,6 +2113,17 @@ static status_t manage_srcroute(private_kernel_netlink_net_t *this, chunk.len = sizeof(ifindex); netlink_add_attribute(hdr, RTA_OIF, chunk, sizeof(request)); + if (this->mtu) + { + chunk = chunk_alloca(RTA_LENGTH(sizeof(struct rtattr) + + sizeof(u_int32_t))); + rta = (struct rtattr*)chunk.ptr; + rta->rta_type = RTAX_MTU; + rta->rta_len = chunk.len; + memcpy(RTA_DATA(rta), &this->mtu, sizeof(u_int32_t)); + netlink_add_attribute(hdr, RTA_METRICS, chunk, sizeof(request)); + } + return this->socket->send_ack(this->socket, hdr); } @@ -2466,6 +2483,8 @@ kernel_netlink_net_t *kernel_netlink_net_create() "%s.prefer_temporary_addrs", FALSE, lib->ns), .roam_events = lib->settings->get_bool(lib->settings, "%s.plugins.kernel-netlink.roam_events", TRUE, lib->ns), + .mtu = lib->settings->get_int(lib->settings, + "%s.plugins.kernel-netlink.mtu", 0, lib->ns), ); timerclear(&this->last_route_reinstall); timerclear(&this->next_roam); |