diff --git a/include/modules/network.hpp b/include/modules/network.hpp index 2523dc2..009ae5a 100644 --- a/include/modules/network.hpp +++ b/include/modules/network.hpp @@ -72,6 +72,7 @@ class Network : public ALabel { int32_t signal_strength_dbm_; uint8_t signal_strength_; uint32_t frequency_; + uint32_t route_priority; util::SleeperThread thread_; util::SleeperThread thread_timer_; diff --git a/src/modules/network.cpp b/src/modules/network.cpp index 583daae..ec221a2 100644 --- a/src/modules/network.cpp +++ b/src/modules/network.cpp @@ -1,6 +1,7 @@ #include "modules/network.hpp" #include #include +#include #include #include #include @@ -400,6 +401,7 @@ bool waybar::modules::Network::checkInterface(std::string name) { void waybar::modules::Network::clearIface() { ifid_ = -1; + ifname_.clear(); essid_.clear(); ipaddr_.clear(); netmask_.clear(); @@ -431,6 +433,20 @@ int waybar::modules::Network::handleEvents(struct nl_msg *msg, void *data) { return NL_OK; } + // Check if the interface goes "down" and if we want to detect the + // external interface. + if (net->ifid_ != -1 && !(ifi->ifi_flags & IFF_UP) + && !net->config_["interface"].isString()) { + // The current interface is now down, all the routes associated with + // it have been deleted, so start looking for a new default route. + spdlog::debug("network: if{} down", net->ifid_); + net->clearIface(); + net->dp.emit(); + net->want_route_dump_ = true; + net->askForStateDump(); + return NL_OK; + } + for (; RTA_OK(ifla, attrlen); ifla = RTA_NEXT(ifla, attrlen)) { switch (ifla->rta_type) { case IFLA_IFNAME: @@ -572,11 +588,7 @@ int waybar::modules::Network::handleEvents(struct nl_msg *msg, void *data) { bool has_gateway = false; bool has_destination = false; int temp_idx = -1; - - /* If we found the correct answer, skip parsing the attributes. */ - if (!is_del_event && net->ifid_ != -1) { - return NL_OK; - } + uint32_t priority = 0; /* Find the message(s) concerting the main routing table, each message * corresponds to a single routing table entry. @@ -620,52 +632,59 @@ int waybar::modules::Network::handleEvents(struct nl_msg *msg, void *data) { /* The output interface index. */ temp_idx = *static_cast(RTA_DATA(attr)); break; + case RTA_PRIORITY: + priority = *(uint32_t*)RTA_DATA(attr); + break; default: break; } + } - /* If this is the default route, and we know the interface index, - * we can stop parsing this message. - */ - if (has_gateway && !has_destination && temp_idx != -1) { - if (!is_del_event) { - net->ifid_ = temp_idx; + // Check if we have a default route. + if (has_gateway && !has_destination && temp_idx != -1) { + // Check if this is the first default route we see, or if this new + // route have a higher priority. + if (!is_del_event && ((net->ifid_ == -1) || (priority < net->route_priority))) { + // Clear if's state for the case were there is a higher priority + // route on a different interface. + net->clearIface(); + net->ifid_ = temp_idx; + net->route_priority = priority; - spdlog::debug("network: new default route via if{}", temp_idx); + spdlog::debug("network: new default route via if{} metric {}", temp_idx, priority); - /* Ask ifname associated with temp_idx as well as carrier status */ - struct ifinfomsg ifinfo_hdr = { - .ifi_family = AF_UNSPEC, - .ifi_index = temp_idx, - }; - int err; - err = nl_send_simple(net->ev_sock_, RTM_GETLINK, NLM_F_REQUEST, - &ifinfo_hdr, sizeof (ifinfo_hdr)); - if (err < 0) { - spdlog::error("network: failed to ask link info: {}", err); - /* Ask for a dump of all links instead */ - net->want_link_dump_ = true; - } - - /* Also ask for the address. Asking for a addresses of a specific - * interface doesn't seems to work so ask for a dump of all - * addresses. */ - net->want_addr_dump_ = true; - net->askForStateDump(); - net->thread_timer_.wake_up(); - } else if (is_del_event && temp_idx == net->ifid_) { - spdlog::debug("network: default route deleted {}/if{}", - net->ifname_, temp_idx); - - net->ifname_.clear(); - net->clearIface(); - net->dp.emit(); - /* Ask for a dump of all routes in case another one is already - * setup. If there's none, there'll be an event with new one - * later. */ - net->want_route_dump_ = true; - net->askForStateDump(); + /* Ask ifname associated with temp_idx as well as carrier status */ + struct ifinfomsg ifinfo_hdr = { + .ifi_family = AF_UNSPEC, + .ifi_index = temp_idx, + }; + int err; + err = nl_send_simple(net->ev_sock_, RTM_GETLINK, NLM_F_REQUEST, + &ifinfo_hdr, sizeof (ifinfo_hdr)); + if (err < 0) { + spdlog::error("network: failed to ask link info: {}", err); + /* Ask for a dump of all links instead */ + net->want_link_dump_ = true; } + + /* Also ask for the address. Asking for a addresses of a specific + * interface doesn't seems to work so ask for a dump of all + * addresses. */ + net->want_addr_dump_ = true; + net->askForStateDump(); + net->thread_timer_.wake_up(); + } else if (is_del_event && temp_idx == net->ifid_ + && net->route_priority == priority) { + spdlog::debug("network: default route deleted {}/if{} metric {}", + net->ifname_, temp_idx, priority); + + net->clearIface(); + net->dp.emit(); + /* Ask for a dump of all routes in case another one is already + * setup. If there's none, there'll be an event with new one + * later. */ + net->want_route_dump_ = true; + net->askForStateDump(); } } break;