| /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| |
| #include <net/if.h> |
| #include <netinet/in.h> |
| #include <linux/if_arp.h> |
| #include <linux/if_bridge.h> |
| |
| #include "bridge.h" |
| #include "netlink-util.h" |
| #include "networkd-manager.h" |
| #include "string-table.h" |
| #include "vlan-util.h" |
| |
| assert_cc((int) MULTICAST_ROUTER_NONE == (int) MDB_RTR_TYPE_DISABLED); |
| assert_cc((int) MULTICAST_ROUTER_TEMPORARY_QUERY == (int) MDB_RTR_TYPE_TEMP_QUERY); |
| assert_cc((int) MULTICAST_ROUTER_PERMANENT == (int) MDB_RTR_TYPE_PERM); |
| assert_cc((int) MULTICAST_ROUTER_TEMPORARY == (int) MDB_RTR_TYPE_TEMP); |
| |
| 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_message(NetDev *netdev, sd_netlink_message *req) { |
| Bridge *b; |
| int r; |
| |
| assert_se(b = BRIDGE(netdev)); |
| |
| r = sd_netlink_message_open_container(req, IFLA_LINKINFO); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_message_open_container_union(req, IFLA_INFO_DATA, netdev_kind_to_string(netdev->kind)); |
| if (r < 0) |
| return r; |
| |
| /* 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 r; |
| } |
| |
| 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 r; |
| } |
| |
| 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 r; |
| } |
| |
| 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 r; |
| } |
| |
| if (b->priority > 0) { |
| r = sd_netlink_message_append_u16(req, IFLA_BR_PRIORITY, b->priority); |
| if (r < 0) |
| return r; |
| } |
| |
| 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 r; |
| } |
| |
| 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 r; |
| } |
| |
| if (b->mcast_querier >= 0) { |
| r = sd_netlink_message_append_u8(req, IFLA_BR_MCAST_QUERIER, b->mcast_querier); |
| if (r < 0) |
| return r; |
| } |
| |
| if (b->mcast_snooping >= 0) { |
| r = sd_netlink_message_append_u8(req, IFLA_BR_MCAST_SNOOPING, b->mcast_snooping); |
| if (r < 0) |
| return r; |
| } |
| |
| if (b->vlan_filtering >= 0) { |
| r = sd_netlink_message_append_u8(req, IFLA_BR_VLAN_FILTERING, b->vlan_filtering); |
| if (r < 0) |
| return r; |
| } |
| |
| if (b->vlan_protocol >= 0) { |
| r = sd_netlink_message_append_u16(req, IFLA_BR_VLAN_PROTOCOL, htobe16(b->vlan_protocol)); |
| if (r < 0) |
| return r; |
| } |
| |
| if (b->stp >= 0) { |
| r = sd_netlink_message_append_u32(req, IFLA_BR_STP_STATE, b->stp); |
| if (r < 0) |
| return r; |
| } |
| |
| if (b->igmp_version > 0) { |
| r = sd_netlink_message_append_u8(req, IFLA_BR_MCAST_IGMP_VERSION, b->igmp_version); |
| if (r < 0) |
| return r; |
| } |
| |
| r = sd_netlink_message_close_container(req); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_message_close_container(req); |
| if (r < 0) |
| return r; |
| |
| return 0; |
| } |
| |
| static int netdev_bridge_post_create(NetDev *netdev, Link *link) { |
| _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; |
| int r; |
| |
| assert(netdev); |
| |
| 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 netlink 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 message flags: %m"); |
| |
| r = netdev_bridge_post_create_message(netdev, req); |
| if (r < 0) |
| return log_netdev_error_errno(netdev, r, "Could not create netlink message: %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 netlink message: %m"); |
| |
| netdev_ref(netdev); |
| |
| 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; |
| } |
| |
| int config_parse_bridge_port_priority( |
| 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) { |
| |
| uint16_t i; |
| int r; |
| |
| assert(filename); |
| assert(lvalue); |
| assert(rvalue); |
| assert(data); |
| |
| /* This is used in networkd-network-gperf.gperf. */ |
| |
| r = safe_atou16(rvalue, &i); |
| if (r < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, r, |
| "Failed to parse bridge port priority, ignoring: %s", rvalue); |
| return 0; |
| } |
| |
| if (i > LINK_BRIDGE_PORT_PRIORITY_MAX) { |
| log_syntax(unit, LOG_WARNING, filename, line, 0, |
| "Bridge port priority is larger than maximum %u, ignoring: %s", |
| LINK_BRIDGE_PORT_PRIORITY_MAX, rvalue); |
| return 0; |
| } |
| |
| *((uint16_t *)data) = i; |
| |
| 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_INDEPENDENT, |
| .iftype = ARPHRD_ETHER, |
| .generate_mac = true, |
| }; |