^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Generic parts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Linux ethernet bridge
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Authors:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Lennert Buytenhek <buytenh@gnu.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/netdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/etherdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/llc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <net/llc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <net/stp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <net/switchdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include "br_private.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * Handle changes in state of network devices enslaved to a bridge.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * Note: don't care about up/down if bridge itself is down, because
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * port state is checked when bridge is brought up.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static int br_device_event(struct notifier_block *unused, unsigned long event, void *ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) struct netlink_ext_ack *extack = netdev_notifier_info_to_extack(ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct netdev_notifier_pre_changeaddr_info *prechaddr_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct net_device *dev = netdev_notifier_info_to_dev(ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct net_bridge_port *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) struct net_bridge *br;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) bool notified = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) bool changed_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) if (dev->priv_flags & IFF_EBRIDGE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) err = br_vlan_bridge_event(dev, event, ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) return notifier_from_errno(err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) if (event == NETDEV_REGISTER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) /* register of bridge completed, add sysfs entries */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) err = br_sysfs_addbr(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) return notifier_from_errno(err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) return NOTIFY_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) /* not a port of a bridge */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) p = br_port_get_rtnl(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) if (!p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) return NOTIFY_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) br = p->br;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) switch (event) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) case NETDEV_CHANGEMTU:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) br_mtu_auto_adjust(br);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) case NETDEV_PRE_CHANGEADDR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) if (br->dev->addr_assign_type == NET_ADDR_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) prechaddr_info = ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) err = dev_pre_changeaddr_notify(br->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) prechaddr_info->dev_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) return notifier_from_errno(err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) case NETDEV_CHANGEADDR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) spin_lock_bh(&br->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) br_fdb_changeaddr(p, dev->dev_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) changed_addr = br_stp_recalculate_bridge_id(br);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) spin_unlock_bh(&br->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) if (changed_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) call_netdevice_notifiers(NETDEV_CHANGEADDR, br->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) case NETDEV_CHANGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) br_port_carrier_check(p, ¬ified);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) case NETDEV_FEAT_CHANGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) netdev_update_features(br->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) case NETDEV_DOWN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) spin_lock_bh(&br->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) if (br->dev->flags & IFF_UP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) br_stp_disable_port(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) notified = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) spin_unlock_bh(&br->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) case NETDEV_UP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) if (netif_running(br->dev) && netif_oper_up(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) spin_lock_bh(&br->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) br_stp_enable_port(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) notified = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) spin_unlock_bh(&br->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) case NETDEV_UNREGISTER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) br_del_if(br, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) case NETDEV_CHANGENAME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) err = br_sysfs_renameif(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) return notifier_from_errno(err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) case NETDEV_PRE_TYPE_CHANGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) /* Forbid underlaying device to change its type. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) return NOTIFY_BAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) case NETDEV_RESEND_IGMP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) /* Propagate to master device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) call_netdevice_notifiers(event, br->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) if (event != NETDEV_UNREGISTER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) br_vlan_port_event(p, event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) /* Events that may cause spanning tree to refresh */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) if (!notified && (event == NETDEV_CHANGEADDR || event == NETDEV_UP ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) event == NETDEV_CHANGE || event == NETDEV_DOWN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) br_ifinfo_notify(RTM_NEWLINK, NULL, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) return NOTIFY_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) static struct notifier_block br_device_notifier = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) .notifier_call = br_device_event
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) /* called with RTNL or RCU */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) static int br_switchdev_event(struct notifier_block *unused,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) unsigned long event, void *ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) struct net_bridge_port *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) struct net_bridge *br;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) struct switchdev_notifier_fdb_info *fdb_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) int err = NOTIFY_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) p = br_port_get_rtnl_rcu(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) if (!p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) br = p->br;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) switch (event) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) case SWITCHDEV_FDB_ADD_TO_BRIDGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) fdb_info = ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) err = br_fdb_external_learn_add(br, p, fdb_info->addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) fdb_info->vid, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) err = notifier_from_errno(err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) br_fdb_offloaded_set(br, p, fdb_info->addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) fdb_info->vid, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) case SWITCHDEV_FDB_DEL_TO_BRIDGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) fdb_info = ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) err = br_fdb_external_learn_del(br, p, fdb_info->addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) fdb_info->vid, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) err = notifier_from_errno(err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) case SWITCHDEV_FDB_OFFLOADED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) fdb_info = ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) br_fdb_offloaded_set(br, p, fdb_info->addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) fdb_info->vid, fdb_info->offloaded);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) case SWITCHDEV_FDB_FLUSH_TO_BRIDGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) fdb_info = ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) /* Don't delete static entries */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) br_fdb_delete_by_port(br, p, fdb_info->vid, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) static struct notifier_block br_switchdev_notifier = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) .notifier_call = br_switchdev_event,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) /* br_boolopt_toggle - change user-controlled boolean option
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) * @br: bridge device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) * @opt: id of the option to change
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) * @on: new option value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) * @extack: extack for error messages
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) * Changes the value of the respective boolean option to @on taking care of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) * any internal option value mapping and configuration.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) int br_boolopt_toggle(struct net_bridge *br, enum br_boolopt_id opt, bool on,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) switch (opt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) case BR_BOOLOPT_NO_LL_LEARN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) br_opt_toggle(br, BROPT_NO_LL_LEARN, on);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) /* shouldn't be called with unsupported options */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) WARN_ON(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) int br_boolopt_get(const struct net_bridge *br, enum br_boolopt_id opt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) switch (opt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) case BR_BOOLOPT_NO_LL_LEARN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) return br_opt_get(br, BROPT_NO_LL_LEARN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) /* shouldn't be called with unsupported options */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) WARN_ON(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) int br_boolopt_multi_toggle(struct net_bridge *br,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) struct br_boolopt_multi *bm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) unsigned long bitmap = bm->optmask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) int opt_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) for_each_set_bit(opt_id, &bitmap, BR_BOOLOPT_MAX) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) bool on = !!(bm->optval & BIT(opt_id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) err = br_boolopt_toggle(br, opt_id, on, extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) br_debug(br, "boolopt multi-toggle error: option: %d current: %d new: %d error: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) opt_id, br_boolopt_get(br, opt_id), on, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) void br_boolopt_multi_get(const struct net_bridge *br,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) struct br_boolopt_multi *bm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) u32 optval = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) int opt_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) for (opt_id = 0; opt_id < BR_BOOLOPT_MAX; opt_id++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) optval |= (br_boolopt_get(br, opt_id) << opt_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) bm->optval = optval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) bm->optmask = GENMASK((BR_BOOLOPT_MAX - 1), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) /* private bridge options, controlled by the kernel */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) void br_opt_toggle(struct net_bridge *br, enum net_bridge_opts opt, bool on)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) bool cur = !!br_opt_get(br, opt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) br_debug(br, "toggle option: %d state: %d -> %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) opt, cur, on);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) if (cur == on)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) if (on)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) set_bit(opt, &br->options);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) clear_bit(opt, &br->options);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) static void __net_exit br_net_exit(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) LIST_HEAD(list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) rtnl_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) for_each_netdev(net, dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) if (dev->priv_flags & IFF_EBRIDGE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) br_dev_delete(dev, &list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) unregister_netdevice_many(&list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) static struct pernet_operations br_net_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) .exit = br_net_exit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) static const struct stp_proto br_stp_proto = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) .rcv = br_stp_rcv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) static int __init br_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) BUILD_BUG_ON(sizeof(struct br_input_skb_cb) > sizeof_field(struct sk_buff, cb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) err = stp_proto_register(&br_stp_proto);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) pr_err("bridge: can't register sap for STP\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) err = br_fdb_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) goto err_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) err = register_pernet_subsys(&br_net_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) goto err_out1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) err = br_nf_core_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) goto err_out2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) err = register_netdevice_notifier(&br_device_notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) goto err_out3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) err = register_switchdev_notifier(&br_switchdev_notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) goto err_out4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) err = br_netlink_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) goto err_out5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) brioctl_set(br_ioctl_deviceless_stub);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) #if IS_ENABLED(CONFIG_ATM_LANE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) br_fdb_test_addr_hook = br_fdb_test_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) #if IS_MODULE(CONFIG_BRIDGE_NETFILTER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) pr_info("bridge: filtering via arp/ip/ip6tables is no longer available "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) "by default. Update your scripts to load br_netfilter if you "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) "need this.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) err_out5:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) unregister_switchdev_notifier(&br_switchdev_notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) err_out4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) unregister_netdevice_notifier(&br_device_notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) err_out3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) br_nf_core_fini();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) err_out2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) unregister_pernet_subsys(&br_net_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) err_out1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) br_fdb_fini();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) err_out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) stp_proto_unregister(&br_stp_proto);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) static void __exit br_deinit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) stp_proto_unregister(&br_stp_proto);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) br_netlink_fini();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) unregister_switchdev_notifier(&br_switchdev_notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) unregister_netdevice_notifier(&br_device_notifier);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) brioctl_set(NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) unregister_pernet_subsys(&br_net_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) rcu_barrier(); /* Wait for completion of call_rcu()'s */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) br_nf_core_fini();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) #if IS_ENABLED(CONFIG_ATM_LANE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) br_fdb_test_addr_hook = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) br_fdb_fini();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) module_init(br_init)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) module_exit(br_deinit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) MODULE_VERSION(BR_VERSION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) MODULE_ALIAS_RTNL_LINK("bridge");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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