networkd: allow setting of multicast querier for linux bridge (#3051)

6 files changed, 102 insertions, 7 deletions

diff --git a/man/systemd.netdev.xml b/man/systemd.netdev.xml
index c5fb2fa7fb..48c283c8df 100644
--- a/man/systemd.netdev.xml
+++ b/man/systemd.netdev.xml
@@ -310,6 +310,17 @@
             of the Listening and Learning states before the Forwarding state is entered.</para>
           </listitem>
         </varlistentry>
+        <varlistentry>
+          <term><varname>MulticastQuerier=</varname></term>
+          <listitem>
+            <para>A boolean. This setting controls the IFLA_BR_MCAST_QUERIER option in the kernel.
+            If enabled, the kernel will send general ICMP queries from a zero source address.
+            This feature should allow faster convergence on startup, but it causes some
+            multicast-aware switches to misbehave and disrupt forwarding of multicast packets.
+            When unset, the kernel's default setting applies.
+            </para>
+          </listitem>
+        </varlistentry>
       </variablelist>
 
   </refsect1>
diff --git a/src/basic/missing.h b/src/basic/missing.h
index 66cd5921ad..6a49ccd281 100644
--- a/src/basic/missing.h
+++ b/src/basic/missing.h
@@ -746,7 +746,40 @@ struct btrfs_ioctl_quota_ctl_args {
 #define IFLA_BR_AGEING_TIME 4
 #define IFLA_BR_STP_STATE 5
 #define IFLA_BR_PRIORITY 6
-#define __IFLA_BR_MAX 7
+#define IFLA_BR_VLAN_FILTERING 7
+#define IFLA_BR_VLAN_PROTOCOL 8
+#define IFLA_BR_GROUP_FWD_MASK 9
+#define IFLA_BR_ROOT_ID 10
+#define IFLA_BR_BRIDGE_ID 11
+#define IFLA_BR_ROOT_PORT 12
+#define IFLA_BR_ROOT_PATH_COST 13
+#define IFLA_BR_TOPOLOGY_CHANGE 14
+#define IFLA_BR_TOPOLOGY_CHANGE_DETECTED 15
+#define IFLA_BR_HELLO_TIMER 16
+#define IFLA_BR_TCN_TIMER 17
+#define IFLA_BR_TOPOLOGY_CHANGE_TIMER 18
+#define IFLA_BR_GC_TIMER 19
+#define IFLA_BR_GROUP_ADDR 20
+#define IFLA_BR_FDB_FLUSH 21
+#define IFLA_BR_MCAST_ROUTER 22
+#define IFLA_BR_MCAST_SNOOPING 23
+#define IFLA_BR_MCAST_QUERY_USE_IFADDR 24
+#define IFLA_BR_MCAST_QUERIER 25
+#define IFLA_BR_MCAST_HASH_ELASTICITY 26
+#define IFLA_BR_MCAST_HASH_MAX 27
+#define IFLA_BR_MCAST_LAST_MEMBER_CNT 28
+#define IFLA_BR_MCAST_STARTUP_QUERY_CNT 29
+#define IFLA_BR_MCAST_LAST_MEMBER_INTVL 30
+#define IFLA_BR_MCAST_MEMBERSHIP_INTVL 31
+#define IFLA_BR_MCAST_QUERIER_INTVL 32
+#define IFLA_BR_MCAST_QUERY_INTVL 33
+#define IFLA_BR_MCAST_QUERY_RESPONSE_INTVL 34
+#define IFLA_BR_MCAST_STARTUP_QUERY_INTVL 35
+#define IFLA_BR_NF_CALL_IPTABLES 36
+#define IFLA_BR_NF_CALL_IP6TABLES 37
+#define IFLA_BR_NF_CALL_ARPTABLES 38
+#define IFLA_BR_VLAN_DEFAULT_PVID 39
+#define __IFLA_BR_MAX 40
 
 #define IFLA_BR_MAX (__IFLA_BR_MAX - 1)
 #endif
diff --git a/src/libsystemd/sd-netlink/netlink-types.c b/src/libsystemd/sd-netlink/netlink-types.c
index a5758bb516..3a4bac2ced 100644
--- a/src/libsystemd/sd-netlink/netlink-types.c
+++ b/src/libsystemd/sd-netlink/netlink-types.c
@@ -95,12 +95,43 @@ static const NLType rtnl_link_info_data_macvlan_types[] = {
 };
 
 static const NLType rtnl_link_info_data_bridge_types[] = {
-        [IFLA_BR_FORWARD_DELAY]  = { .type = NETLINK_TYPE_U32 },
-        [IFLA_BR_HELLO_TIME]     = { .type = NETLINK_TYPE_U32 },
-        [IFLA_BR_MAX_AGE]        = { .type = NETLINK_TYPE_U32 },
-        [IFLA_BR_AGEING_TIME]    = { .type = NETLINK_TYPE_U32 },
-        [IFLA_BR_STP_STATE]      = { .type = NETLINK_TYPE_U32 },
-        [IFLA_BR_PRIORITY]       = { .type = NETLINK_TYPE_U16 },
+        [IFLA_BR_FORWARD_DELAY]              = { .type = NETLINK_TYPE_U32 },
+        [IFLA_BR_HELLO_TIME]                 = { .type = NETLINK_TYPE_U32 },
+        [IFLA_BR_MAX_AGE]                    = { .type = NETLINK_TYPE_U32 },
+        [IFLA_BR_AGEING_TIME]                = { .type = NETLINK_TYPE_U32 },
+        [IFLA_BR_STP_STATE]                  = { .type = NETLINK_TYPE_U32 },
+        [IFLA_BR_PRIORITY]                   = { .type = NETLINK_TYPE_U16 },
+        [IFLA_BR_VLAN_FILTERING]             = { .type = NETLINK_TYPE_U8 },
+        [IFLA_BR_VLAN_PROTOCOL]              = { .type = NETLINK_TYPE_U16 },
+        [IFLA_BR_GROUP_FWD_MASK]             = { .type = NETLINK_TYPE_U16 },
+        [IFLA_BR_ROOT_PORT]                  = { .type = NETLINK_TYPE_U16 },
+        [IFLA_BR_ROOT_PATH_COST]             = { .type = NETLINK_TYPE_U32 },
+        [IFLA_BR_TOPOLOGY_CHANGE]            = { .type = NETLINK_TYPE_U8 },
+        [IFLA_BR_TOPOLOGY_CHANGE_DETECTED]   = { .type = NETLINK_TYPE_U8 },
+        [IFLA_BR_HELLO_TIMER]                = { .type = NETLINK_TYPE_U16 },
+        [IFLA_BR_TCN_TIMER]                  = { .type = NETLINK_TYPE_U16 },
+        [IFLA_BR_TOPOLOGY_CHANGE_TIMER]      = { .type = NETLINK_TYPE_U16 },
+        [IFLA_BR_GC_TIMER]                   = { .type = NETLINK_TYPE_U64 },
+        [IFLA_BR_GROUP_ADDR]                 = { .type = NETLINK_TYPE_U16 },
+        [IFLA_BR_FDB_FLUSH]                  = { .type = NETLINK_TYPE_U16 },
+        [IFLA_BR_MCAST_ROUTER]               = { .type = NETLINK_TYPE_U8 },
+        [IFLA_BR_MCAST_SNOOPING]             = { .type = NETLINK_TYPE_U8 },
+        [IFLA_BR_MCAST_QUERY_USE_IFADDR]     = { .type = NETLINK_TYPE_U8 },
+        [IFLA_BR_MCAST_QUERIER]              = { .type = NETLINK_TYPE_U8 },
+        [IFLA_BR_MCAST_HASH_ELASTICITY]      = { .type = NETLINK_TYPE_U32 },
+        [IFLA_BR_MCAST_HASH_MAX]             = { .type = NETLINK_TYPE_U16 },
+        [IFLA_BR_MCAST_LAST_MEMBER_CNT]      = { .type = NETLINK_TYPE_U32 },
+        [IFLA_BR_MCAST_STARTUP_QUERY_CNT]    = { .type = NETLINK_TYPE_U16 },
+        [IFLA_BR_MCAST_LAST_MEMBER_INTVL]    = { .type = NETLINK_TYPE_U64 },
+        [IFLA_BR_MCAST_MEMBERSHIP_INTVL]     = { .type = NETLINK_TYPE_U64 },
+        [IFLA_BR_MCAST_QUERIER_INTVL]        = { .type = NETLINK_TYPE_U64 },
+        [IFLA_BR_MCAST_QUERY_INTVL]          = { .type = NETLINK_TYPE_U64 },
+        [IFLA_BR_MCAST_QUERY_RESPONSE_INTVL] = { .type = NETLINK_TYPE_U64 },
+        [IFLA_BR_MCAST_STARTUP_QUERY_INTVL]  = { .type = NETLINK_TYPE_U64 },
+        [IFLA_BR_NF_CALL_IPTABLES]           = { .type = NETLINK_TYPE_U8 },
+        [IFLA_BR_NF_CALL_IP6TABLES]          = { .type = NETLINK_TYPE_U8 },
+        [IFLA_BR_NF_CALL_ARPTABLES]          = { .type = NETLINK_TYPE_U8 },
+        [IFLA_BR_VLAN_DEFAULT_PVID]          = { .type = NETLINK_TYPE_U16 },
 };
 
 static const NLType rtnl_link_info_data_vlan_types[] = {
diff --git a/src/network/networkd-netdev-bridge.c b/src/network/networkd-netdev-bridge.c
index cdcd08f057..3f91b2eaea 100644
--- a/src/network/networkd-netdev-bridge.c
+++ b/src/network/networkd-netdev-bridge.c
@@ -89,6 +89,12 @@ static int netdev_bridge_post_create(NetDev *netdev, Link *link, sd_netlink_mess
                         return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_MAX_AGE attribute: %m");
         }
 
+        if (b->mcast_querier >= 0) {
+                r = sd_netlink_message_append_u8(req, IFLA_BR_MCAST_QUERIER, b->mcast_querier);
+                if (r < 0)
+                        return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_MCAST_QUERIER attribute: %m");
+        }
+
         r = sd_netlink_message_close_container(req);
         if (r < 0)
                 return log_netdev_error_errno(netdev, r, "Could not append IFLA_LINKINFO attribute: %m");
@@ -106,8 +112,19 @@ static int netdev_bridge_post_create(NetDev *netdev, Link *link, sd_netlink_mess
         return r;
 }
 
+static void bridge_init(NetDev *n) {
+        Bridge *b;
+
+        b = BRIDGE(n);
+
+        assert(b);
+
+        b->mcast_querier = -1;
+}
+
 const NetDevVTable bridge_vtable = {
         .object_size = sizeof(Bridge),
+        .init = bridge_init,
         .sections = "Match\0NetDev\0Bridge\0",
         .post_create = netdev_bridge_post_create,
         .create_type = NETDEV_CREATE_MASTER,
diff --git a/src/network/networkd-netdev-bridge.h b/src/network/networkd-netdev-bridge.h
index 27f26f7870..3f6f1d0502 100644
--- a/src/network/networkd-netdev-bridge.h
+++ b/src/network/networkd-netdev-bridge.h
@@ -26,6 +26,8 @@ typedef struct Bridge Bridge;
 struct Bridge {
         NetDev meta;
 
+        int mcast_querier;
+
         usec_t forward_delay;
         usec_t hello_time;
         usec_t max_age;
diff --git a/src/network/networkd-netdev-gperf.gperf b/src/network/networkd-netdev-gperf.gperf
index 8f506af092..15a787a9e3 100644
--- a/src/network/networkd-netdev-gperf.gperf
+++ b/src/network/networkd-netdev-gperf.gperf
@@ -92,3 +92,4 @@ Bond.LearnPacketIntervalSec, config_parse_sec,                   0,
 Bridge.HelloTimeSec,         config_parse_sec,                   0,                             offsetof(Bridge, hello_time)
 Bridge.MaxAgeSec,            config_parse_sec,                   0,                             offsetof(Bridge, max_age)
 Bridge.ForwardDelaySec,      config_parse_sec,                   0,                             offsetof(Bridge, forward_delay)
+Bridge.MulticastQuerier,     config_parse_tristate,              0,                             offsetof(Bridge, mcast_querier)