src/network/netdev/bridge.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <net/if.h>
   4
   5 #include "missing.h"
   6 #include "netlink-util.h"
   7 #include "netdev/bridge.h"
   8 #include "networkd-manager.h"
   9 #include "vlan-util.h"
  10
  11 /* callback for brige netdev's parameter set */
  12 static int netdev_bridge_set_handler(sd_netlink *rtnl, sd_netlink_message *m, NetDev *netdev) {
  13         int r;
  14
  15         assert(netdev);
  16         assert(m);
  17
  18         r = sd_netlink_message_get_errno(m);
  19         if (r < 0) {
  20                 log_netdev_warning_errno(netdev, r, "Bridge parameters could not be set: %m");
  21                 return 1;
  22         }
  23
  24         log_netdev_debug(netdev, "Bridge parameters set success");
  25
  26         return 1;
  27 }
  28
  29 static int netdev_bridge_post_create(NetDev *netdev, Link *link, sd_netlink_message *m) {
  30         _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
  31         Bridge *b;
  32         int r;
  33
  34         assert(netdev);
  35
  36         b = BRIDGE(netdev);
  37
  38         assert(b);
  39
  40         r = sd_rtnl_message_new_link(netdev->manager->rtnl, &req, RTM_NEWLINK, netdev->ifindex);
  41         if (r < 0)
  42                 return log_netdev_error_errno(netdev, r, "Could not allocate RTM_SETLINK message: %m");
  43
  44         r = sd_netlink_message_set_flags(req, NLM_F_REQUEST | NLM_F_ACK);
  45         if (r < 0)
  46                 return log_link_error_errno(link, r, "Could not set netlink flags: %m");
  47
  48         r = sd_netlink_message_open_container(req, IFLA_LINKINFO);
  49         if (r < 0)
  50                 return log_netdev_error_errno(netdev, r, "Could not append IFLA_LINKINFO attribute: %m");
  51
  52         r = sd_netlink_message_open_container_union(req, IFLA_INFO_DATA, netdev_kind_to_string(netdev->kind));
  53         if (r < 0)
  54                 return log_netdev_error_errno(netdev, r, "Could not append IFLA_INFO_DATA attribute: %m");
  55
  56         /* convert to jiffes */
  57         if (b->forward_delay != USEC_INFINITY) {
  58                 r = sd_netlink_message_append_u32(req, IFLA_BR_FORWARD_DELAY, usec_to_jiffies(b->forward_delay));
  59                 if (r < 0)
  60                         return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_FORWARD_DELAY attribute: %m");
  61         }
  62
  63         if (b->hello_time > 0) {
  64                 r = sd_netlink_message_append_u32(req, IFLA_BR_HELLO_TIME, usec_to_jiffies(b->hello_time));
  65                 if (r < 0)
  66                         return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_HELLO_TIME attribute: %m");
  67         }
  68
  69         if (b->max_age > 0) {
  70                 r = sd_netlink_message_append_u32(req, IFLA_BR_MAX_AGE, usec_to_jiffies(b->max_age));
  71                 if (r < 0)
  72                         return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_MAX_AGE attribute: %m");
  73         }
  74
  75         if (b->ageing_time != USEC_INFINITY) {
  76                 r = sd_netlink_message_append_u32(req, IFLA_BR_AGEING_TIME, usec_to_jiffies(b->ageing_time));
  77                 if (r < 0)
  78                         return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_AGEING_TIME attribute: %m");
  79         }
  80
  81         if (b->priority > 0) {
  82                 r = sd_netlink_message_append_u16(req, IFLA_BR_PRIORITY, b->priority);
  83                 if (r < 0)
  84                         return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_PRIORITY attribute: %m");
  85         }
  86
  87         if (b->group_fwd_mask > 0) {
  88                 r = sd_netlink_message_append_u16(req, IFLA_BR_GROUP_FWD_MASK, b->group_fwd_mask);
  89                 if (r < 0)
  90                         return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_GROUP_FWD_MASK attribute: %m");
  91         }
  92
  93         if (b->default_pvid != VLANID_INVALID) {
  94                 r = sd_netlink_message_append_u16(req, IFLA_BR_VLAN_DEFAULT_PVID, b->default_pvid);
  95                 if (r < 0)
  96                         return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_VLAN_DEFAULT_PVID attribute: %m");
  97         }
  98
  99         if (b->mcast_querier >= 0) {
 100                 r = sd_netlink_message_append_u8(req, IFLA_BR_MCAST_QUERIER, b->mcast_querier);
 101                 if (r < 0)
 102                         return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_MCAST_QUERIER attribute: %m");
 103         }
 104
 105         if (b->mcast_snooping >= 0) {
 106                 r = sd_netlink_message_append_u8(req, IFLA_BR_MCAST_SNOOPING, b->mcast_snooping);
 107                 if (r < 0)
 108                         return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_MCAST_SNOOPING attribute: %m");
 109         }
 110
 111         if (b->vlan_filtering >= 0) {
 112                 r = sd_netlink_message_append_u8(req, IFLA_BR_VLAN_FILTERING, b->vlan_filtering);
 113                 if (r < 0)
 114                         return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_VLAN_FILTERING attribute: %m");
 115         }
 116
 117         if (b->stp >= 0) {
 118                 r = sd_netlink_message_append_u32(req, IFLA_BR_STP_STATE, b->stp);
 119                 if (r < 0)
 120                         return log_netdev_error_errno(netdev, r, "Could not append IFLA_BR_STP_STATE attribute: %m");
 121         }
 122
 123         r = sd_netlink_message_close_container(req);
 124         if (r < 0)
 125                 return log_netdev_error_errno(netdev, r, "Could not append IFLA_LINKINFO attribute: %m");
 126
 127         r = sd_netlink_message_close_container(req);
 128         if (r < 0)
 129                 return log_netdev_error_errno(netdev, r, "Could not append IFLA_INFO_DATA attribute: %m");
 130
 131         r = netlink_call_async(netdev->manager->rtnl, NULL, req, netdev_bridge_set_handler,
 132                                netdev_destroy_callback, netdev);
 133         if (r < 0)
 134                 return log_netdev_error_errno(netdev, r, "Could not send rtnetlink message: %m");
 135
 136         netdev_ref(netdev);
 137
 138         return r;
 139 }
 140
 141 static void bridge_init(NetDev *n) {
 142         Bridge *b;
 143
 144         b = BRIDGE(n);
 145
 146         assert(b);
 147
 148         b->mcast_querier = -1;
 149         b->mcast_snooping = -1;
 150         b->vlan_filtering = -1;
 151         b->stp = -1;
 152         b->default_pvid = VLANID_INVALID;
 153         b->forward_delay = USEC_INFINITY;
 154         b->ageing_time = USEC_INFINITY;
 155 }
 156
 157 const NetDevVTable bridge_vtable = {
 158         .object_size = sizeof(Bridge),
 159         .init = bridge_init,
 160         .sections = "Match\0NetDev\0Bridge\0",
 161         .post_create = netdev_bridge_post_create,
 162         .create_type = NETDEV_CREATE_MASTER,
 163 };