[thirdparty/systemd.git] / src / network / netdev / bridge.c

/* SPDX-License-Identifier: LGPL-2.1+ */

#include <net/if.h>

#include "bridge.h"
#include "netlink-util.h"
#include "network-internal.h"
#include "networkd-manager.h"
#include "string-table.h"
#include "vlan-util.h"

static const char* const multicast_router_table[_MULTICAST_ROUTER_MAX] = {
        [MULTICAST_ROUTER_NONE] = "no",
        [MULTICAST_ROUTER_TEMPORARY_QUERY] = "query",
        [MULTICAST_ROUTER_PERMANENT] = "permanent",
        [MULTICAST_ROUTER_TEMPORARY] = "temporary",
};

DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(multicast_router, MulticastRouter, _MULTICAST_ROUTER_INVALID);
DEFINE_CONFIG_PARSE_ENUM(config_parse_multicast_router, multicast_router, MulticastRouter,
                         "Failed to parse bridge multicast router setting");

/* callback for bridge netdev's parameter set */
static int netdev_bridge_set_handler(sd_netlink *rtnl, sd_netlink_message *m, NetDev *netdev) {
        int r;

        assert(netdev);
        assert(m);

        r = sd_netlink_message_get_errno(m);
        if (r < 0) {
                log_netdev_warning_errno(netdev, r, "Bridge parameters could not be set: %m");
                return 1;
        }

        log_netdev_debug(netdev, "Bridge parameters set success");

        return 1;
}

static int netdev_bridge_post_create(NetDev *netdev, Link *link, sd_netlink_message *m) {
        _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
        Bridge *b;
        int r;

        assert(netdev);

        b = BRIDGE(netdev);

        assert(b);

        r = sd_rtnl_message_new_link(netdev->manager->rtnl, &req, RTM_NEWLINK, netdev->ifindex);
        if (r < 0)
                return log_netdev_error_errno(netdev, r, "Could not allocate RTM_SETLINK message: %m");

        r = sd_netlink_message_set_flags(req, NLM_F_REQUEST | NLM_F_ACK);
        if (r < 0)
                return log_link_error_errno(link, r, "Could not set netlink flags: %m");

        r = sd_netlink_message_open_container(req, IFLA_LINKINFO);
        if (r < 0)
                return log_netdev_error_errno(netdev, r, "Could not append IFLA_LINKINFO attribute: %m");

        r = sd_netlink_message_open_container_union(req, IFLA_INFO_DATA, netdev_kind_to_string(netdev->kind));
        if (r < 0)
                return log_netdev_error_errno(netdev, r, "Could not append IFLA_INFO_DATA attribute: %m");

        /* convert to jiffes */
        if (b->forward_delay != USEC_INFINITY) {
                r = sd_netlink_message_append_u32(req, IFLA_BR_FORWARD_DELAY, usec_to_jiffies(b->forward_delay));
                if (r < 0)
                        return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_FORWARD_DELAY attribute: %m");
        }

        if (b->hello_time > 0) {
                r = sd_netlink_message_append_u32(req, IFLA_BR_HELLO_TIME, usec_to_jiffies(b->hello_time));
                if (r < 0)
                        return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_HELLO_TIME attribute: %m");
        }

        if (b->max_age > 0) {
                r = sd_netlink_message_append_u32(req, IFLA_BR_MAX_AGE, usec_to_jiffies(b->max_age));
                if (r < 0)
                        return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_MAX_AGE attribute: %m");
        }

        if (b->ageing_time != USEC_INFINITY) {
                r = sd_netlink_message_append_u32(req, IFLA_BR_AGEING_TIME, usec_to_jiffies(b->ageing_time));
                if (r < 0)
                        return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_AGEING_TIME attribute: %m");
        }

        if (b->priority > 0) {
                r = sd_netlink_message_append_u16(req, IFLA_BR_PRIORITY, b->priority);
                if (r < 0)
                        return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_PRIORITY attribute: %m");
        }

        if (b->group_fwd_mask > 0) {
                r = sd_netlink_message_append_u16(req, IFLA_BR_GROUP_FWD_MASK, b->group_fwd_mask);
                if (r < 0)
                        return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_GROUP_FWD_MASK attribute: %m");
        }

        if (b->default_pvid != VLANID_INVALID) {
                r = sd_netlink_message_append_u16(req, IFLA_BR_VLAN_DEFAULT_PVID, b->default_pvid);
                if (r < 0)
                        return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_VLAN_DEFAULT_PVID 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");
        }

        if (b->mcast_snooping >= 0) {
                r = sd_netlink_message_append_u8(req, IFLA_BR_MCAST_SNOOPING, b->mcast_snooping);
                if (r < 0)
                        return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_MCAST_SNOOPING attribute: %m");
        }

        if (b->vlan_filtering >= 0) {
                r = sd_netlink_message_append_u8(req, IFLA_BR_VLAN_FILTERING, b->vlan_filtering);
                if (r < 0)
                        return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_VLAN_FILTERING attribute: %m");
        }

        if (b->vlan_protocol >= 0) {
                r = sd_netlink_message_append_u16(req, IFLA_BR_VLAN_PROTOCOL, b->vlan_protocol);
                if (r < 0)
                        return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_VLAN_PROTOCOL attribute: %m");
        }

        if (b->stp >= 0) {
                r = sd_netlink_message_append_u32(req, IFLA_BR_STP_STATE, b->stp);
                if (r < 0)
                        return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_STP_STATE attribute: %m");
        }

        if (b->igmp_version > 0) {
                r = sd_netlink_message_append_u8(req, IFLA_BR_MCAST_IGMP_VERSION, b->igmp_version);
                if (r < 0)
                        return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_MCAST_IGMP_VERSION 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");

        r = sd_netlink_message_close_container(req);
        if (r < 0)
                return log_netdev_error_errno(netdev, r, "Could not append IFLA_INFO_DATA attribute: %m");

        r = netlink_call_async(netdev->manager->rtnl, NULL, req, netdev_bridge_set_handler,
                               netdev_destroy_callback, netdev);
        if (r < 0)
                return log_netdev_error_errno(netdev, r, "Could not send rtnetlink message: %m");

        netdev_ref(netdev);

        return r;
}

static int link_set_bridge_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) {
        int r;

        assert(m);
        assert(link);
        assert(link->ifname);

        if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
                return 1;

        r = sd_netlink_message_get_errno(m);
        if (r < 0) {
                log_link_warning_errno(link, r, "Could not set bridge interface: %m");
                return 1;
        }

        return 1;
}

int link_set_bridge(Link *link) {
        _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
        int r;

        assert(link);
        assert(link->network);

        r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex);
        if (r < 0)
                return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m");

        r = sd_rtnl_message_link_set_family(req, PF_BRIDGE);
        if (r < 0)
                return log_link_error_errno(link, r, "Could not set message family: %m");

        r = sd_netlink_message_open_container(req, IFLA_PROTINFO);
        if (r < 0)
                return log_link_error_errno(link, r, "Could not append IFLA_PROTINFO attribute: %m");

        if (link->network->use_bpdu >= 0) {
                r = sd_netlink_message_append_u8(req, IFLA_BRPORT_GUARD, link->network->use_bpdu);
                if (r < 0)
                        return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_GUARD attribute: %m");
        }

        if (link->network->hairpin >= 0) {
                r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MODE, link->network->hairpin);
                if (r < 0)
                        return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MODE attribute: %m");
        }

        if (link->network->fast_leave >= 0) {
                r = sd_netlink_message_append_u8(req, IFLA_BRPORT_FAST_LEAVE, link->network->fast_leave);
                if (r < 0)
                        return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_FAST_LEAVE attribute: %m");
        }

        if (link->network->allow_port_to_be_root >= 0) {
                r = sd_netlink_message_append_u8(req, IFLA_BRPORT_PROTECT, link->network->allow_port_to_be_root);
                if (r < 0)
                        return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PROTECT attribute: %m");
        }

        if (link->network->unicast_flood >= 0) {
                r = sd_netlink_message_append_u8(req, IFLA_BRPORT_UNICAST_FLOOD, link->network->unicast_flood);
                if (r < 0)
                        return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_UNICAST_FLOOD attribute: %m");
        }

        if (link->network->multicast_flood >= 0) {
                r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MCAST_FLOOD, link->network->multicast_flood);
                if (r < 0)
                        return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MCAST_FLOOD attribute: %m");
        }

        if (link->network->multicast_to_unicast >= 0) {
                r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MCAST_TO_UCAST, link->network->multicast_to_unicast);
                if (r < 0)
                        return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MCAST_TO_UCAST attribute: %m");
        }

        if (link->network->neighbor_suppression >= 0) {
                r = sd_netlink_message_append_u8(req, IFLA_BRPORT_NEIGH_SUPPRESS, link->network->neighbor_suppression);
                if (r < 0)
                        return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_NEIGH_SUPPRESS attribute: %m");
        }

        if (link->network->learning >= 0) {
                r = sd_netlink_message_append_u8(req, IFLA_BRPORT_LEARNING, link->network->learning);
                if (r < 0)
                        return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_LEARNING attribute: %m");
        }

        if (link->network->bridge_proxy_arp >= 0) {
                r = sd_netlink_message_append_u8(req, IFLA_BRPORT_PROXYARP, link->network->bridge_proxy_arp);
                if (r < 0)
                        return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PROXYARP attribute: %m");
        }

        if (link->network->bridge_proxy_arp_wifi >= 0) {
                r = sd_netlink_message_append_u8(req, IFLA_BRPORT_PROXYARP_WIFI, link->network->bridge_proxy_arp_wifi);
                if (r < 0)
                        return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PROXYARP_WIFI attribute: %m");
        }

        if (link->network->cost != 0) {
                r = sd_netlink_message_append_u32(req, IFLA_BRPORT_COST, link->network->cost);
                if (r < 0)
                        return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_COST attribute: %m");
        }

        if (link->network->priority != LINK_BRIDGE_PORT_PRIORITY_INVALID) {
                r = sd_netlink_message_append_u16(req, IFLA_BRPORT_PRIORITY, link->network->priority);
                if (r < 0)
                        return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PRIORITY attribute: %m");
        }

        if (link->network->multicast_router != _MULTICAST_ROUTER_INVALID) {
                r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MULTICAST_ROUTER, link->network->multicast_router);
                if (r < 0)
                        return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MULTICAST_ROUTER attribute: %m");
        }

        r = sd_netlink_message_close_container(req);
        if (r < 0)
                return log_link_error_errno(link, r, "Could not append IFLA_LINKINFO attribute: %m");

        r = netlink_call_async(link->manager->rtnl, NULL, req, link_set_bridge_handler,
                               link_netlink_destroy_callback, link);
        if (r < 0)
                return log_link_error_errno(link, r, "Could not send rtnetlink message: %m");

        link_ref(link);

        return r;
}

int config_parse_bridge_igmp_version(
                const char *unit,
                const char *filename,
                unsigned line,
                const char *section,
                unsigned section_line,
                const char *lvalue,
                int ltype,
                const char *rvalue,
                void *data,
                void *userdata) {

        Bridge *b = userdata;
        uint8_t u;
        int r;

        assert(filename);
        assert(lvalue);
        assert(rvalue);
        assert(data);

        if (isempty(rvalue)) {
                b->igmp_version = 0; /* 0 means unset. */
                return 0;
        }

        r = safe_atou8(rvalue, &u);
        if (r < 0) {
                log_syntax(unit, LOG_WARNING, filename, line, r,
                           "Failed to parse bridge's multicast IGMP version number '%s', ignoring assignment: %m",
                           rvalue);
                return 0;
        }
        if (!IN_SET(u, 2, 3)) {
                log_syntax(unit, LOG_WARNING, filename, line, 0,
                           "Invalid bridge's multicast IGMP version number '%s', ignoring assignment.", rvalue);
                return 0;
        }

        b->igmp_version = u;

        return 0;
}

static void bridge_init(NetDev *n) {
        Bridge *b;

        b = BRIDGE(n);

        assert(b);

        b->mcast_querier = -1;
        b->mcast_snooping = -1;
        b->vlan_filtering = -1;
        b->vlan_protocol = -1;
        b->stp = -1;
        b->default_pvid = VLANID_INVALID;
        b->forward_delay = USEC_INFINITY;
        b->ageing_time = USEC_INFINITY;
}

const NetDevVTable bridge_vtable = {
        .object_size = sizeof(Bridge),
        .init = bridge_init,
        .sections = NETDEV_COMMON_SECTIONS "Bridge\0",
        .post_create = netdev_bridge_post_create,
        .create_type = NETDEV_CREATE_MASTER,
};
Commit	Line	Data
53e1b683	1	/* SPDX-License-Identifier: LGPL-2.1+ */
6235b3de	2
540eb5f0	3	#include <net/if.h>
6235b3de	4
737f1405	5	#include "bridge.h"
540eb5f0	6	#include "netlink-util.h"
9a81f119	7	#include "network-internal.h"
23f53b99	8	#include "networkd-manager.h"
8e2cb51c	9	#include "string-table.h"
0d6c68eb	10	#include "vlan-util.h"
540eb5f0	11
8e2cb51c YW	12	static const char* const multicast_router_table[_MULTICAST_ROUTER_MAX] = {
	13	[MULTICAST_ROUTER_NONE] = "no",
	14	[MULTICAST_ROUTER_TEMPORARY_QUERY] = "query",
	15	[MULTICAST_ROUTER_PERMANENT] = "permanent",
	16	[MULTICAST_ROUTER_TEMPORARY] = "temporary",
	17	};
	18
	19	DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(multicast_router, MulticastRouter, _MULTICAST_ROUTER_INVALID);
	20	DEFINE_CONFIG_PARSE_ENUM(config_parse_multicast_router, multicast_router, MulticastRouter,
	21	"Failed to parse bridge multicast router setting");
	22
5238e957	23	/* callback for bridge netdev's parameter set */
302a796f	24	static int netdev_bridge_set_handler(sd_netlink rtnl, sd_netlink_message m, NetDev *netdev) {
540eb5f0 SS	25	int r;
	26
	27	assert(netdev);
	28	assert(m);
	29
	30	r = sd_netlink_message_get_errno(m);
	31	if (r < 0) {
	32	log_netdev_warning_errno(netdev, r, "Bridge parameters could not be set: %m");
	33	return 1;
	34	}
	35
82936769	36	log_netdev_debug(netdev, "Bridge parameters set success");
540eb5f0 SS	37
	38	return 1;
	39	}
	40
	41	static int netdev_bridge_post_create(NetDev netdev, Link link, sd_netlink_message *m) {
4afd3348	42	_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
540eb5f0 SS	43	Bridge *b;
	44	int r;
	45
	46	assert(netdev);
	47
	48	b = BRIDGE(netdev);
	49
	50	assert(b);
	51
	52	r = sd_rtnl_message_new_link(netdev->manager->rtnl, &req, RTM_NEWLINK, netdev->ifindex);
	53	if (r < 0)
	54	return log_netdev_error_errno(netdev, r, "Could not allocate RTM_SETLINK message: %m");
	55
	56	r = sd_netlink_message_set_flags(req, NLM_F_REQUEST \| NLM_F_ACK);
	57	if (r < 0)
	58	return log_link_error_errno(link, r, "Could not set netlink flags: %m");
	59
	60	r = sd_netlink_message_open_container(req, IFLA_LINKINFO);
	61	if (r < 0)
15cdaeee	62	return log_netdev_error_errno(netdev, r, "Could not append IFLA_LINKINFO attribute: %m");
540eb5f0 SS	63
	64	r = sd_netlink_message_open_container_union(req, IFLA_INFO_DATA, netdev_kind_to_string(netdev->kind));
	65	if (r < 0)
	66	return log_netdev_error_errno(netdev, r, "Could not append IFLA_INFO_DATA attribute: %m");
	67
1a14863e	68	/* convert to jiffes */
730389b6	69	if (b->forward_delay != USEC_INFINITY) {
1a14863e	70	r = sd_netlink_message_append_u32(req, IFLA_BR_FORWARD_DELAY, usec_to_jiffies(b->forward_delay));
540eb5f0 SS	71	if (r < 0)
	72	return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_FORWARD_DELAY attribute: %m");
	73	}
	74
	75	if (b->hello_time > 0) {
1a14863e	76	r = sd_netlink_message_append_u32(req, IFLA_BR_HELLO_TIME, usec_to_jiffies(b->hello_time));
540eb5f0 SS	77	if (r < 0)
	78	return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_HELLO_TIME attribute: %m");
	79	}
	80
	81	if (b->max_age > 0) {
1a14863e	82	r = sd_netlink_message_append_u32(req, IFLA_BR_MAX_AGE, usec_to_jiffies(b->max_age));
540eb5f0 SS	83	if (r < 0)
	84	return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_MAX_AGE attribute: %m");
	85	}
	86
0da81203	87	if (b->ageing_time != USEC_INFINITY) {
c7440e74 TJ	88	r = sd_netlink_message_append_u32(req, IFLA_BR_AGEING_TIME, usec_to_jiffies(b->ageing_time));
	89	if (r < 0)
	90	return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_AGEING_TIME attribute: %m");
	91	}
	92
	93	if (b->priority > 0) {
	94	r = sd_netlink_message_append_u16(req, IFLA_BR_PRIORITY, b->priority);
	95	if (r < 0)
	96	return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_PRIORITY attribute: %m");
	97	}
	98
c4819961 JC	99	if (b->group_fwd_mask > 0) {
	100	r = sd_netlink_message_append_u16(req, IFLA_BR_GROUP_FWD_MASK, b->group_fwd_mask);
	101	if (r < 0)
	102	return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_GROUP_FWD_MASK attribute: %m");
	103	}
	104
0d6c68eb	105	if (b->default_pvid != VLANID_INVALID) {
c7440e74 TJ	106	r = sd_netlink_message_append_u16(req, IFLA_BR_VLAN_DEFAULT_PVID, b->default_pvid);
	107	if (r < 0)
	108	return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_VLAN_DEFAULT_PVID attribute: %m");
	109	}
	110
3fef7a3f SS	111	if (b->mcast_querier >= 0) {
	112	r = sd_netlink_message_append_u8(req, IFLA_BR_MCAST_QUERIER, b->mcast_querier);
	113	if (r < 0)
	114	return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_MCAST_QUERIER attribute: %m");
	115	}
	116
6df6d898 SS	117	if (b->mcast_snooping >= 0) {
	118	r = sd_netlink_message_append_u8(req, IFLA_BR_MCAST_SNOOPING, b->mcast_snooping);
	119	if (r < 0)
	120	return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_MCAST_SNOOPING attribute: %m");
	121	}
	122
c6f8d17d TJ	123	if (b->vlan_filtering >= 0) {
	124	r = sd_netlink_message_append_u8(req, IFLA_BR_VLAN_FILTERING, b->vlan_filtering);
	125	if (r < 0)
	126	return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_VLAN_FILTERING attribute: %m");
	127	}
	128
4df4df5b RF	129	if (b->vlan_protocol >= 0) {
	130	r = sd_netlink_message_append_u16(req, IFLA_BR_VLAN_PROTOCOL, b->vlan_protocol);
	131	if (r < 0)
	132	return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_VLAN_PROTOCOL attribute: %m");
	133	}
	134
b760a9af SS	135	if (b->stp >= 0) {
	136	r = sd_netlink_message_append_u32(req, IFLA_BR_STP_STATE, b->stp);
	137	if (r < 0)
	138	return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_STP_STATE attribute: %m");
	139	}
	140
afa51e2d SS	141	if (b->igmp_version > 0) {
	142	r = sd_netlink_message_append_u8(req, IFLA_BR_MCAST_IGMP_VERSION, b->igmp_version);
	143	if (r < 0)
	144	return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_MCAST_IGMP_VERSION attribute: %m");
	145	}
	146
540eb5f0 SS	147	r = sd_netlink_message_close_container(req);
	148	if (r < 0)
	149	return log_netdev_error_errno(netdev, r, "Could not append IFLA_LINKINFO attribute: %m");
	150
	151	r = sd_netlink_message_close_container(req);
	152	if (r < 0)
	153	return log_netdev_error_errno(netdev, r, "Could not append IFLA_INFO_DATA attribute: %m");
	154
302a796f YW	155	r = netlink_call_async(netdev->manager->rtnl, NULL, req, netdev_bridge_set_handler,
302a796f YW	156	netdev_destroy_callback, netdev);
540eb5f0 SS	157	if (r < 0)
	158	return log_netdev_error_errno(netdev, r, "Could not send rtnetlink message: %m");
	159
	160	netdev_ref(netdev);
	161
	162	return r;
	163	}
6235b3de	164
9a81f119 YW	165	static int link_set_bridge_handler(sd_netlink rtnl, sd_netlink_message m, Link *link) {
	166	int r;
	167
	168	assert(m);
	169	assert(link);
	170	assert(link->ifname);
	171
	172	if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
	173	return 1;
	174
	175	r = sd_netlink_message_get_errno(m);
	176	if (r < 0) {
	177	log_link_warning_errno(link, r, "Could not set bridge interface: %m");
	178	return 1;
	179	}
	180
	181	return 1;
	182	}
	183
	184	int link_set_bridge(Link *link) {
	185	_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
	186	int r;
	187
	188	assert(link);
	189	assert(link->network);
	190
	191	r = sd_rtnl_message_new_link(link->manager->rtnl, &req, RTM_SETLINK, link->ifindex);
	192	if (r < 0)
	193	return log_link_error_errno(link, r, "Could not allocate RTM_SETLINK message: %m");
	194
	195	r = sd_rtnl_message_link_set_family(req, PF_BRIDGE);
	196	if (r < 0)
	197	return log_link_error_errno(link, r, "Could not set message family: %m");
	198
	199	r = sd_netlink_message_open_container(req, IFLA_PROTINFO);
	200	if (r < 0)
	201	return log_link_error_errno(link, r, "Could not append IFLA_PROTINFO attribute: %m");
	202
	203	if (link->network->use_bpdu >= 0) {
	204	r = sd_netlink_message_append_u8(req, IFLA_BRPORT_GUARD, link->network->use_bpdu);
	205	if (r < 0)
	206	return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_GUARD attribute: %m");
	207	}
	208
	209	if (link->network->hairpin >= 0) {
	210	r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MODE, link->network->hairpin);
	211	if (r < 0)
	212	return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MODE attribute: %m");
	213	}
	214
	215	if (link->network->fast_leave >= 0) {
	216	r = sd_netlink_message_append_u8(req, IFLA_BRPORT_FAST_LEAVE, link->network->fast_leave);
	217	if (r < 0)
	218	return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_FAST_LEAVE attribute: %m");
	219	}
	220
43bf2874	221	if (link->network->allow_port_to_be_root >= 0) {
9a81f119 YW	222	r = sd_netlink_message_append_u8(req, IFLA_BRPORT_PROTECT, link->network->allow_port_to_be_root);
	223	if (r < 0)
	224	return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PROTECT attribute: %m");
	225	}
	226
	227	if (link->network->unicast_flood >= 0) {
	228	r = sd_netlink_message_append_u8(req, IFLA_BRPORT_UNICAST_FLOOD, link->network->unicast_flood);
	229	if (r < 0)
	230	return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_UNICAST_FLOOD attribute: %m");
	231	}
	232
	233	if (link->network->multicast_flood >= 0) {
	234	r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MCAST_FLOOD, link->network->multicast_flood);
	235	if (r < 0)
	236	return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MCAST_FLOOD attribute: %m");
	237	}
	238
	239	if (link->network->multicast_to_unicast >= 0) {
	240	r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MCAST_TO_UCAST, link->network->multicast_to_unicast);
	241	if (r < 0)
	242	return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MCAST_TO_UCAST attribute: %m");
	243	}
	244
	245	if (link->network->neighbor_suppression >= 0) {
	246	r = sd_netlink_message_append_u8(req, IFLA_BRPORT_NEIGH_SUPPRESS, link->network->neighbor_suppression);
	247	if (r < 0)
	248	return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_NEIGH_SUPPRESS attribute: %m");
	249	}
	250
	251	if (link->network->learning >= 0) {
	252	r = sd_netlink_message_append_u8(req, IFLA_BRPORT_LEARNING, link->network->learning);
	253	if (r < 0)
	254	return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_LEARNING attribute: %m");
	255	}
	256
	257	if (link->network->bridge_proxy_arp >= 0) {
	258	r = sd_netlink_message_append_u8(req, IFLA_BRPORT_PROXYARP, link->network->bridge_proxy_arp);
	259	if (r < 0)
	260	return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PROXYARP attribute: %m");
	261	}
	262
	263	if (link->network->bridge_proxy_arp_wifi >= 0) {
	264	r = sd_netlink_message_append_u8(req, IFLA_BRPORT_PROXYARP_WIFI, link->network->bridge_proxy_arp_wifi);
	265	if (r < 0)
	266	return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PROXYARP_WIFI attribute: %m");
	267	}
	268
	269	if (link->network->cost != 0) {
	270	r = sd_netlink_message_append_u32(req, IFLA_BRPORT_COST, link->network->cost);
	271	if (r < 0)
	272	return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_COST attribute: %m");
	273	}
	274
	275	if (link->network->priority != LINK_BRIDGE_PORT_PRIORITY_INVALID) {
	276	r = sd_netlink_message_append_u16(req, IFLA_BRPORT_PRIORITY, link->network->priority);
	277	if (r < 0)
	278	return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_PRIORITY attribute: %m");
	279	}
	280
	281	if (link->network->multicast_router != _MULTICAST_ROUTER_INVALID) {
	282	r = sd_netlink_message_append_u8(req, IFLA_BRPORT_MULTICAST_ROUTER, link->network->multicast_router);
	283	if (r < 0)
	284	return log_link_error_errno(link, r, "Could not append IFLA_BRPORT_MULTICAST_ROUTER attribute: %m");
	285	}
286
287	r = sd_netlink_message_close_container(req);
288	if (r < 0)
289	return log_link_error_errno(link, r, "Could not append IFLA_LINKINFO attribute: %m");
290
291	r = netlink_call_async(link->manager->rtnl, NULL, req, link_set_bridge_handler,
292	link_netlink_destroy_callback, link);
293	if (r < 0)
294	return log_link_error_errno(link, r, "Could not send rtnetlink message: %m");
295
296	link_ref(link);
297
298	return r;
299	}
300
afa51e2d SS	301	int config_parse_bridge_igmp_version(
	302	const char *unit,
	303	const char *filename,
	304	unsigned line,
	305	const char *section,
	306	unsigned section_line,
	307	const char *lvalue,
	308	int ltype,
	309	const char *rvalue,
	310	void *data,
	311	void *userdata) {
	312
	313	Bridge *b = userdata;
	314	uint8_t u;
	315	int r;
	316
	317	assert(filename);
	318	assert(lvalue);
	319	assert(rvalue);
	320	assert(data);
	321
	322	if (isempty(rvalue)) {
	323	b->igmp_version = 0; /* 0 means unset. */
	324	return 0;
	325	}
	326
	327	r = safe_atou8(rvalue, &u);
	328	if (r < 0) {
d96edb2c	329	log_syntax(unit, LOG_WARNING, filename, line, r,
b738530b	330	"Failed to parse bridge's multicast IGMP version number '%s', ignoring assignment: %m",
afa51e2d SS	331	rvalue);
	332	return 0;
	333	}
	334	if (!IN_SET(u, 2, 3)) {
d96edb2c	335	log_syntax(unit, LOG_WARNING, filename, line, 0,
b738530b	336	"Invalid bridge's multicast IGMP version number '%s', ignoring assignment.", rvalue);
afa51e2d SS	337	return 0;
	338	}
	339
	340	b->igmp_version = u;
	341
	342	return 0;
	343	}
	344
3fef7a3f SS	345	static void bridge_init(NetDev *n) {
	346	Bridge *b;
	347
	348	b = BRIDGE(n);
	349
	350	assert(b);
	351
	352	b->mcast_querier = -1;
6df6d898	353	b->mcast_snooping = -1;
c6f8d17d	354	b->vlan_filtering = -1;
4df4df5b	355	b->vlan_protocol = -1;
b760a9af	356	b->stp = -1;
0d6c68eb	357	b->default_pvid = VLANID_INVALID;
730389b6	358	b->forward_delay = USEC_INFINITY;
0da81203	359	b->ageing_time = USEC_INFINITY;
3fef7a3f SS	360	}
3fef7a3f SS	361
3be1d7e0	362	const NetDevVTable bridge_vtable = {
aa9f1140	363	.object_size = sizeof(Bridge),
3fef7a3f	364	.init = bridge_init,
130b812f	365	.sections = NETDEV_COMMON_SECTIONS "Bridge\0",
540eb5f0	366	.post_create = netdev_bridge_post_create,
aa9f1140	367	.create_type = NETDEV_CREATE_MASTER,
3be1d7e0	368	};