From 28cc555d8504c9429776aedbbe1fee7101258578 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 22 Jul 2014 16:54:47 -0500 Subject: networkd: set route protocol All routes added by networkd are currently set RTPROT_BOOT, which according to the kernel means "Route installed during boot" (rtnetlink.h). But this is not always the case as networkd changes routing after boot too. Since the kernel gives more detailed protocols, use them. With this patch, user-configured static routes now use RTPROT_STATIC (which they are) and DHCP routes use RTPROT_DHCP. There is no define for IPv4LL yet, so those are installed as RTPROT_STATIC (though perhaps RTPROT_RA is better?). [tomegun: fixup src/network/networkd-link.c:972:33: error: too few arguments to function 'route_new_dynamic'] --- src/libsystemd/sd-rtnl/rtnl-message.c | 5 +++-- src/libsystemd/sd-rtnl/test-rtnl.c | 2 +- src/network/networkd-link.c | 16 ++++++++-------- src/network/networkd-route.c | 10 +++++++--- src/network/networkd.h | 3 ++- src/systemd/sd-rtnl.h | 2 +- 6 files changed, 22 insertions(+), 16 deletions(-) diff --git a/src/libsystemd/sd-rtnl/rtnl-message.c b/src/libsystemd/sd-rtnl/rtnl-message.c index 7f2e398b74..c50d0ea982 100644 --- a/src/libsystemd/sd-rtnl/rtnl-message.c +++ b/src/libsystemd/sd-rtnl/rtnl-message.c @@ -133,7 +133,8 @@ int sd_rtnl_message_route_set_scope(sd_rtnl_message *m, unsigned char scope) { } int sd_rtnl_message_new_route(sd_rtnl *rtnl, sd_rtnl_message **ret, - uint16_t nlmsg_type, int rtm_family) { + uint16_t nlmsg_type, int rtm_family, + unsigned char rtm_protocol) { struct rtmsg *rtm; int r; @@ -154,7 +155,7 @@ int sd_rtnl_message_new_route(sd_rtnl *rtnl, sd_rtnl_message **ret, rtm->rtm_scope = RT_SCOPE_UNIVERSE; rtm->rtm_type = RTN_UNICAST; rtm->rtm_table = RT_TABLE_MAIN; - rtm->rtm_protocol = RTPROT_BOOT; + rtm->rtm_protocol = rtm_protocol; return 0; } diff --git a/src/libsystemd/sd-rtnl/test-rtnl.c b/src/libsystemd/sd-rtnl/test-rtnl.c index 082c9e4a01..4b6e5339d9 100644 --- a/src/libsystemd/sd-rtnl/test-rtnl.c +++ b/src/libsystemd/sd-rtnl/test-rtnl.c @@ -132,7 +132,7 @@ static void test_route(void) { uint32_t index = 2, u32_data; int r; - r = sd_rtnl_message_new_route(NULL, &req, RTM_NEWROUTE, AF_INET); + r = sd_rtnl_message_new_route(NULL, &req, RTM_NEWROUTE, AF_INET, RTPROT_STATIC); if (r < 0) { log_error("Could not create RTM_NEWROUTE message: %s", strerror(-r)); return; diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c index 0a6f52408f..86d4b83d3b 100644 --- a/src/network/networkd-link.c +++ b/src/network/networkd-link.c @@ -415,7 +415,7 @@ static int link_set_dhcp_routes(Link *link) { for (i = 0; i < n; i++) { _cleanup_route_free_ Route *route = NULL; - r = route_new_dynamic(&route); + r = route_new_dynamic(&route, RTPROT_DHCP); if (r < 0) { log_error_link(link, "Could not allocate route: %s", strerror(-r)); @@ -481,7 +481,7 @@ static int link_enter_set_routes(Link *link) { } if (r != -ENOENT) { - r = route_new_dynamic(&route); + r = route_new_dynamic(&route, RTPROT_STATIC); if (r < 0) { log_error_link(link, "Could not allocate route: %s", strerror(-r)); @@ -517,14 +517,14 @@ static int link_enter_set_routes(Link *link) { } if (r >= 0) { - r = route_new_dynamic(&route); + r = route_new_dynamic(&route, RTPROT_DHCP); if (r < 0) { log_error_link(link, "Could not allocate route: %s", strerror(-r)); return r; } - r = route_new_dynamic(&route_gw); + r = route_new_dynamic(&route_gw, RTPROT_DHCP); if (r < 0) { log_error_link(link, "Could not allocate route: %s", strerror(-r)); @@ -969,7 +969,7 @@ static int dhcp_lease_lost(Link *link) { for (i = 0; i < n; i++) { _cleanup_route_free_ Route *route = NULL; - r = route_new_dynamic(&route); + r = route_new_dynamic(&route, RTPROT_UNSPEC); if (r >= 0) { route->family = AF_INET; route->in_addr.in = routes[i].gw_addr; @@ -989,7 +989,7 @@ static int dhcp_lease_lost(Link *link) { _cleanup_route_free_ Route *route_gw = NULL; _cleanup_route_free_ Route *route = NULL; - r = route_new_dynamic(&route_gw); + r = route_new_dynamic(&route_gw, RTPROT_UNSPEC); if (r >= 0) { route_gw->family = AF_INET; route_gw->dst_addr.in = gateway; @@ -999,7 +999,7 @@ static int dhcp_lease_lost(Link *link) { route_drop(route_gw, link, &route_drop_handler); } - r = route_new_dynamic(&route); + r = route_new_dynamic(&route, RTPROT_UNSPEC); if (r >= 0) { route->family = AF_INET; route->in_addr.in = gateway; @@ -1316,7 +1316,7 @@ static int ipv4ll_address_lost(Link *link) { address_drop(address, link, &address_drop_handler); - r = route_new_dynamic(&route); + r = route_new_dynamic(&route, RTPROT_UNSPEC); if (r < 0) { log_error_link(link, "Could not allocate route: %s", strerror(-r)); diff --git a/src/network/networkd-route.c b/src/network/networkd-route.c index 8949299409..00fd9528c4 100644 --- a/src/network/networkd-route.c +++ b/src/network/networkd-route.c @@ -49,6 +49,7 @@ int route_new_static(Network *network, unsigned section, Route **ret) { route->family = AF_UNSPEC; route->scope = RT_SCOPE_UNIVERSE; + route->protocol = RTPROT_STATIC; route->network = network; @@ -65,7 +66,7 @@ int route_new_static(Network *network, unsigned section, Route **ret) { return 0; } -int route_new_dynamic(Route **ret) { +int route_new_dynamic(Route **ret, unsigned char rtm_protocol) { _cleanup_route_free_ Route *route = NULL; route = new0(Route, 1); @@ -74,6 +75,7 @@ int route_new_dynamic(Route **ret) { route->family = AF_UNSPEC; route->scope = RT_SCOPE_UNIVERSE; + route->protocol = rtm_protocol; *ret = route; route = NULL; @@ -108,7 +110,8 @@ int route_drop(Route *route, Link *link, assert(route->family == AF_INET || route->family == AF_INET6); r = sd_rtnl_message_new_route(link->manager->rtnl, &req, - RTM_DELROUTE, route->family); + RTM_DELROUTE, route->family, + route->protocol); if (r < 0) { log_error("Could not create RTM_DELROUTE message: %s", strerror(-r)); return r; @@ -181,7 +184,8 @@ int route_configure(Route *route, Link *link, assert(route->family == AF_INET || route->family == AF_INET6); r = sd_rtnl_message_new_route(link->manager->rtnl, &req, - RTM_NEWROUTE, route->family); + RTM_NEWROUTE, route->family, + route->protocol); if (r < 0) { log_error("Could not create RTM_NEWROUTE message: %s", strerror(-r)); return r; diff --git a/src/network/networkd.h b/src/network/networkd.h index f1c7f204ea..7d291e5ea3 100644 --- a/src/network/networkd.h +++ b/src/network/networkd.h @@ -137,6 +137,7 @@ struct Route { unsigned char dst_prefixlen; unsigned char scope; uint32_t metrics; + unsigned char protocol; /* RTPROT_* */ union in_addr_union in_addr; union in_addr_union dst_addr; @@ -305,7 +306,7 @@ const struct ConfigPerfItem* network_network_gperf_lookup(const char *key, unsig /* Route */ int route_new_static(Network *network, unsigned section, Route **ret); -int route_new_dynamic(Route **ret); +int route_new_dynamic(Route **ret, unsigned char rtm_protocol); void route_free(Route *route); int route_configure(Route *route, Link *link, sd_rtnl_message_handler_t callback); int route_drop(Route *route, Link *link, sd_rtnl_message_handler_t callback); diff --git a/src/systemd/sd-rtnl.h b/src/systemd/sd-rtnl.h index 5cd26d98cd..47bb232ff1 100644 --- a/src/systemd/sd-rtnl.h +++ b/src/systemd/sd-rtnl.h @@ -72,7 +72,7 @@ int sd_rtnl_message_new_addr_update(sd_rtnl *rtnl, sd_rtnl_message **ret, int in int sd_rtnl_message_new_addr(sd_rtnl *rtnl, sd_rtnl_message **ret, uint16_t msg_type, int index, int family); int sd_rtnl_message_new_route(sd_rtnl *rtnl, sd_rtnl_message **ret, uint16_t nlmsg_type, - int rtm_family); + int rtm_family, unsigned char rtm_protocol); sd_rtnl_message *sd_rtnl_message_ref(sd_rtnl_message *m); sd_rtnl_message *sd_rtnl_message_unref(sd_rtnl_message *m); -- cgit v1.2.3-54-g00ecf