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core: merge branch 'th/external-routes-no-sync'

Browse source 
https://bugzilla.redhat.com/show_bug.cgi?id=1979192

https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/935
This commit is contained in:
Thomas Haller 2021-07-21 09:57:30 +02:00
commit 4ad4db6cf1
No known key found for this signature in database
GPG key ID: 29C2366E4DFC5728
6 changed files with 121 additions and 62 deletions
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5
src/core/nm-ip4-config.c
View file

@ -163,6 +163,11 @@ _nm_ip_config_add_obj(NMDedupMultiIndex * multi_idx,
obj_new_stackinit.ip_route.rt_source = obj_old->ip_route.rt_source;
modified = TRUE;
}
if (!obj_new->ip_route.is_external && obj_old->ip_route.is_external) {
obj_new = nmp_object_stackinit_obj(&obj_new_stackinit, obj_new);
obj_new_stackinit.ip_route.is_external = FALSE;
modified = TRUE;
}
break;
default:
nm_assert_not_reached();

3
src/core/platform/nm-fake-platform.c
View file

@ -1117,6 +1117,9 @@ ip_route_add(NMPlatform * platform,
: NMP_OBJECT_TYPE_IP6_ROUTE,
(const NMPlatformObject *) route);
r = NMP_OBJECT_CAST_IP_ROUTE(obj);
r->is_external = TRUE;
nm_platform_ip_route_normalize(addr_family, r);
switch (addr_family) {

104
src/core/platform/tests/test-route.c
View file

@ -332,30 +332,33 @@ test_ip4_route(void)
/* Test route listing */
routes = nmtstp_ip4_route_get_all(NM_PLATFORM_GET, ifindex);
memset(rts, 0, sizeof(rts));
rts[0].rt_source = nmp_utils_ip_config_source_round_trip_rtprot(NM_IP_CONFIG_SOURCE_USER);
rts[0].network = gateway;
rts[0].plen = 32;
rts[0].ifindex = ifindex;
rts[0].gateway = INADDR_ANY;
rts[0].metric = metric;
rts[0].mss = mss;
rts[0].scope_inv = nm_platform_route_scope_inv(RT_SCOPE_LINK);
rts[1].rt_source = nmp_utils_ip_config_source_round_trip_rtprot(NM_IP_CONFIG_SOURCE_USER);
rts[1].network = network;
rts[1].plen = plen;
rts[1].ifindex = ifindex;
rts[1].gateway = gateway;
rts[1].metric = metric;
rts[1].mss = mss;
rts[1].scope_inv = nm_platform_route_scope_inv(RT_SCOPE_UNIVERSE);
rts[2].rt_source = nmp_utils_ip_config_source_round_trip_rtprot(NM_IP_CONFIG_SOURCE_USER);
rts[2].network = 0;
rts[2].plen = 0;
rts[2].ifindex = ifindex;
rts[2].gateway = gateway;
rts[2].metric = metric;
rts[2].mss = mss;
rts[2].scope_inv = nm_platform_route_scope_inv(RT_SCOPE_UNIVERSE);
rts[0].rt_source = nmp_utils_ip_config_source_round_trip_rtprot(NM_IP_CONFIG_SOURCE_USER);
rts[0].network = gateway;
rts[0].plen = 32;
rts[0].ifindex = ifindex;
rts[0].gateway = INADDR_ANY;
rts[0].metric = metric;
rts[0].mss = mss;
rts[0].is_external = TRUE;
rts[0].scope_inv = nm_platform_route_scope_inv(RT_SCOPE_LINK);
rts[1].rt_source = nmp_utils_ip_config_source_round_trip_rtprot(NM_IP_CONFIG_SOURCE_USER);
rts[1].network = network;
rts[1].plen = plen;
rts[1].ifindex = ifindex;
rts[1].gateway = gateway;
rts[1].metric = metric;
rts[1].mss = mss;
rts[1].scope_inv = nm_platform_route_scope_inv(RT_SCOPE_UNIVERSE);
rts[1].is_external = TRUE;
rts[2].rt_source = nmp_utils_ip_config_source_round_trip_rtprot(NM_IP_CONFIG_SOURCE_USER);
rts[2].network = 0;
rts[2].plen = 0;
rts[2].ifindex = ifindex;
rts[2].gateway = gateway;
rts[2].metric = metric;
rts[2].mss = mss;
rts[2].scope_inv = nm_platform_route_scope_inv(RT_SCOPE_UNIVERSE);
rts[2].is_external = TRUE;
g_assert_cmpint(routes->len, ==, 3);
nmtst_platform_ip4_routes_equal_aptr((const NMPObject *const *) routes->pdata,
rts,
@ -489,30 +492,33 @@ test_ip6_route(void)
/* Test route listing */
routes = nmtstp_ip6_route_get_all(NM_PLATFORM_GET, ifindex);
memset(rts, 0, sizeof(rts));
rts[0].rt_source = nmp_utils_ip_config_source_round_trip_rtprot(NM_IP_CONFIG_SOURCE_USER);
rts[0].network = gateway;
rts[0].plen = 128;
rts[0].ifindex = ifindex;
rts[0].gateway = in6addr_any;
rts[0].pref_src = in6addr_any;
rts[0].metric = metric;
rts[0].mss = mss;
rts[1].rt_source = nmp_utils_ip_config_source_round_trip_rtprot(NM_IP_CONFIG_SOURCE_USER);
rts[1].network = network;
rts[1].plen = plen;
rts[1].ifindex = ifindex;
rts[1].gateway = gateway;
rts[1].pref_src = pref_src;
rts[1].metric = metric;
rts[1].mss = mss;
rts[2].rt_source = nmp_utils_ip_config_source_round_trip_rtprot(NM_IP_CONFIG_SOURCE_USER);
rts[2].network = in6addr_any;
rts[2].plen = 0;
rts[2].ifindex = ifindex;
rts[2].gateway = gateway;
rts[2].pref_src = in6addr_any;
rts[2].metric = metric;
rts[2].mss = mss;
rts[0].rt_source = nmp_utils_ip_config_source_round_trip_rtprot(NM_IP_CONFIG_SOURCE_USER);
rts[0].network = gateway;
rts[0].plen = 128;
rts[0].ifindex = ifindex;
rts[0].gateway = in6addr_any;
rts[0].pref_src = in6addr_any;
rts[0].metric = metric;
rts[0].mss = mss;
rts[0].is_external = TRUE;
rts[1].rt_source = nmp_utils_ip_config_source_round_trip_rtprot(NM_IP_CONFIG_SOURCE_USER);
rts[1].network = network;
rts[1].plen = plen;
rts[1].ifindex = ifindex;
rts[1].gateway = gateway;
rts[1].pref_src = pref_src;
rts[1].metric = metric;
rts[1].mss = mss;
rts[1].is_external = TRUE;
rts[2].rt_source = nmp_utils_ip_config_source_round_trip_rtprot(NM_IP_CONFIG_SOURCE_USER);
rts[2].network = in6addr_any;
rts[2].plen = 0;
rts[2].ifindex = ifindex;
rts[2].gateway = gateway;
rts[2].pref_src = in6addr_any;
rts[2].metric = metric;
rts[2].mss = mss;
rts[2].is_external = TRUE;
g_assert_cmpint(routes->len, ==, 3);
nmtst_platform_ip6_routes_equal_aptr((const NMPObject *const *) routes->pdata,
rts,
@ -709,6 +715,7 @@ test_ip4_route_options(gconstpointer test_data)
for (i = 0; i < rts_n; i++) {
rts_cmp[i] = rts_add[i];
nm_platform_ip_route_normalize(AF_INET, NM_PLATFORM_IP_ROUTE_CAST(&rts_cmp[i]));
rts_cmp[i].is_external = TRUE;
}
routes = nmtstp_ip4_route_get_all(NM_PLATFORM_GET, IFINDEX);
@ -880,6 +887,7 @@ test_ip6_route_options(gconstpointer test_data)
for (i = 0; i < rts_n; i++) {
rts_cmp[i] = rts_add[i];
nm_platform_ip_route_normalize(AF_INET6, NM_PLATFORM_IP_ROUTE_CAST(&rts_cmp[i]));
rts_cmp[i].is_external = TRUE;
}
routes = nmtstp_ip6_route_get_all(NM_PLATFORM_GET, IFINDEX);

1
src/libnm-platform/nm-linux-platform.c
View file

@ -3519,6 +3519,7 @@ rta_multipath_done:;
obj = nmp_object_new(is_v4 ? NMP_OBJECT_TYPE_IP4_ROUTE : NMP_OBJECT_TYPE_IP6_ROUTE, NULL);
obj->ip_route.is_external = TRUE;
obj->ip_route.type_coerced = nm_platform_route_type_coerce(rtm->rtm_type);
obj->ip_route.table_coerced = nm_platform_route_table_coerce(
tb[RTA_TABLE] ? nla_get_u32(tb[RTA_TABLE]) : (guint32) rtm->rtm_table);

62
src/libnm-platform/nm-platform.c
View file

@ -4489,6 +4489,20 @@ nm_platform_ip_route_sync(NMPlatform *self,
conf_o = routes->pdata[i];
if (NMP_OBJECT_CAST_IP_ROUTE(conf_o)->is_external) {
/* This route is added externally. We don't have our own agenda to
* add it, so skip. */
continue;
}
/* User space cannot add IPv6 routes with metric 0. However, kernel can, and we might track such
* routes in @route as they are present external. As we already skipped external routes above,
* we don't expect a user's choice to add such a route (it won't work anyway). */
nm_assert(
IS_IPv4
|| nm_platform_ip6_route_get_effective_metric(NMP_OBJECT_CAST_IP6_ROUTE(conf_o))
!= 0);
#define VTABLE_IS_DEVICE_ROUTE(vt, o) \
(vt->is_ip4 ? (NMP_OBJECT_CAST_IP4_ROUTE(o)->gateway == 0) \
: IN6_IS_ADDR_UNSPECIFIED(&NMP_OBJECT_CAST_IP6_ROUTE(o)->gateway))
@ -4505,7 +4519,7 @@ nm_platform_ip_route_sync(NMPlatform *self,
routes_idx = g_hash_table_new((GHashFunc) nmp_object_id_hash,
(GEqualFunc) nmp_object_id_equal);
}
if (!g_hash_table_insert(routes_idx, (gpointer) conf_o, (gpointer) conf_o)) {
if (!g_hash_table_add(routes_idx, (gpointer) conf_o)) {
_LOG3D("route-sync: skip adding duplicate route %s",
nmp_object_to_string(conf_o,
NMP_OBJECT_TO_STRING_PUBLIC,
@ -4514,14 +4528,6 @@ nm_platform_ip_route_sync(NMPlatform *self,
continue;
}
if (!IS_IPv4
&& nm_platform_ip6_route_get_effective_metric(NMP_OBJECT_CAST_IP6_ROUTE(conf_o))
== 0) {
/* User space cannot add routes with metric 0. However, kernel can, and we might track such
* routes in @route as they are present external. Skip them silently. */
continue;
}
plat_entry = nm_platform_lookup_entry(self, NMP_CACHE_ID_TYPE_OBJECT_TYPE, conf_o);
if (plat_entry) {
const NMPObject *plat_o;
@ -4684,6 +4690,24 @@ sync_route_add:
}
if (routes_prune) {
if (routes) {
for (i = 0; i < routes->len; i++) {
conf_o = routes->pdata[i];
if (NMP_OBJECT_CAST_IP_ROUTE(conf_o)->is_external) {
/* this is only to catch the case where an external route is
* both in @routes and @routes_prune list. In that case,
* @routes should win and we should not remove the address. */
if (!routes_idx) {
routes_idx = g_hash_table_new((GHashFunc) nmp_object_id_hash,
(GEqualFunc) nmp_object_id_equal);
}
g_hash_table_add(routes_idx, (gpointer) conf_o);
continue;
}
}
}
for (i = 0; i < routes_prune->len; i++) {
const NMPObject *prune_o;
@ -4694,7 +4718,7 @@ sync_route_add:
|| (!NM_IS_IPv4(addr_family)
&& NMP_OBJECT_GET_TYPE(prune_o) == NMP_OBJECT_TYPE_IP6_ROUTE));
if (routes_idx && g_hash_table_lookup(routes_idx, prune_o))
if (nm_g_hash_table_lookup(routes_idx, prune_o))
continue;
if (!nm_platform_lookup_entry(self, NMP_CACHE_ID_TYPE_OBJECT_TYPE, prune_o))
@ -6524,6 +6548,7 @@ nm_platform_ip4_route_to_string(const NMPlatformIP4Route *route, char *buf, gsiz
"%s" /* initcwnd */
"%s" /* initrwnd */
"%s" /* mtu */
"%s" /* is_external */
"",
nm_net_aux_rtnl_rtntype_n2a_maybe_buf(nm_platform_route_type_uncoerce(route->type_coerced),
str_type),
@ -6579,7 +6604,8 @@ nm_platform_ip4_route_to_string(const NMPlatformIP4Route *route, char *buf, gsiz
" mtu %s%" G_GUINT32_FORMAT,
route->lock_mtu ? "lock " : "",
route->mtu)
: "");
: "",
route->is_external ? " (E)" : "");
return buf;
}
@ -6649,6 +6675,7 @@ nm_platform_ip6_route_to_string(const NMPlatformIP6Route *route, char *buf, gsiz
"%s" /* initrwnd */
"%s" /* mtu */
"%s" /* pref */
"%s" /* is_external */
"",
nm_net_aux_rtnl_rtntype_n2a_maybe_buf(nm_platform_route_type_uncoerce(route->type_coerced),
str_type),
@ -6708,7 +6735,8 @@ nm_platform_ip6_route_to_string(const NMPlatformIP6Route *route, char *buf, gsiz
str_pref,
" pref %s",
nm_icmpv6_router_pref_to_string(route->rt_pref, str_pref2, sizeof(str_pref2)))
: "");
: "",
route->is_external ? " (E)" : "");
return buf;
}
@ -8005,7 +8033,8 @@ nm_platform_ip4_route_hash_update(const NMPlatformIP4Route *obj,
obj->lock_cwnd,
obj->lock_initcwnd,
obj->lock_initrwnd,
obj->lock_mtu));
obj->lock_mtu,
obj->is_external));
break;
}
}
@ -8095,6 +8124,8 @@ nm_platform_ip4_route_cmp(const NMPlatformIP4Route *a,
NM_CMP_FIELD(a, b, initcwnd);
NM_CMP_FIELD(a, b, initrwnd);
NM_CMP_FIELD(a, b, mtu);
if (cmp_type == NM_PLATFORM_IP_ROUTE_CMP_TYPE_FULL)
NM_CMP_FIELD_UNSAFE(a, b, is_external);
break;
}
return 0;
@ -8186,7 +8217,8 @@ nm_platform_ip6_route_hash_update(const NMPlatformIP6Route *obj,
obj->lock_cwnd,
obj->lock_initcwnd,
obj->lock_initrwnd,
obj->lock_mtu),
obj->lock_mtu,
obj->is_external),
obj->window,
obj->cwnd,
obj->initcwnd,
@ -8269,6 +8301,8 @@ nm_platform_ip6_route_cmp(const NMPlatformIP6Route *a,
NM_CMP_DIRECT(_route_pref_normalize(a->rt_pref), _route_pref_normalize(b->rt_pref));
else
NM_CMP_FIELD(a, b, rt_pref);
if (cmp_type == NM_PLATFORM_IP_ROUTE_CMP_TYPE_FULL)
NM_CMP_FIELD_UNSAFE(a, b, is_external);
break;
}
return 0;

8
src/libnm-platform/nm-platform.h
View file

@ -462,6 +462,14 @@ typedef union {
* the "table_coerced" field is ignored (unlike for the metric). */ \
bool table_any : 1; \
\
/* This route is tracked as external route, that is not a route that NetworkManager
* actively wants to add, but a route that was added externally. In some cases, such
* a route should be ignored.
*
* Note that unlike most other fields here, this flag only exists inside NetworkManager
* and is not reflected on netlink. */ \
bool is_external : 1; \
\
/* rtnh_flags
*
* Routes with rtm_flags RTM_F_CLONED are hidden by platform and