multicast.c (9a87ffc99ec8eb8d35eed7c4f816d75f5cc9662e) multicast.c (07afe1ba288c04280622fa002ed385f1ac0b6fe6)
1// SPDX-License-Identifier: GPL-2.0
2/* Copyright (C) B.A.T.M.A.N. contributors:
3 *
4 * Linus Lüssing
5 */
6
7#include "multicast.h"
8#include "main.h"

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231
232 flags &= batadv_mcast_mla_rtr_flags_softif_get(bat_priv, bridge);
233 flags &= batadv_mcast_mla_rtr_flags_bridge_get(bat_priv, bridge);
234
235 return flags;
236}
237
238/**
1// SPDX-License-Identifier: GPL-2.0
2/* Copyright (C) B.A.T.M.A.N. contributors:
3 *
4 * Linus Lüssing
5 */
6
7#include "multicast.h"
8#include "main.h"

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231
232 flags &= batadv_mcast_mla_rtr_flags_softif_get(bat_priv, bridge);
233 flags &= batadv_mcast_mla_rtr_flags_bridge_get(bat_priv, bridge);
234
235 return flags;
236}
237
238/**
239 * batadv_mcast_mla_forw_flags_get() - get multicast forwarding flags
240 * @bat_priv: the bat priv with all the soft interface information
241 *
242 * Checks if all active hard interfaces have an MTU larger or equal to 1280
243 * bytes (IPv6 minimum MTU).
244 *
245 * Return: BATADV_MCAST_HAVE_MC_PTYPE_CAPA if yes, BATADV_NO_FLAGS otherwise.
246 */
247static u8 batadv_mcast_mla_forw_flags_get(struct batadv_priv *bat_priv)
248{
249 const struct batadv_hard_iface *hard_iface;
250
251 rcu_read_lock();
252 list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) {
253 if (hard_iface->if_status != BATADV_IF_ACTIVE)
254 continue;
255
256 if (hard_iface->soft_iface != bat_priv->soft_iface)
257 continue;
258
259 if (hard_iface->net_dev->mtu < IPV6_MIN_MTU) {
260 rcu_read_unlock();
261 return BATADV_NO_FLAGS;
262 }
263 }
264 rcu_read_unlock();
265
266 return BATADV_MCAST_HAVE_MC_PTYPE_CAPA;
267}
268
269/**
239 * batadv_mcast_mla_flags_get() - get the new multicast flags
240 * @bat_priv: the bat priv with all the soft interface information
241 *
242 * Return: A set of flags for the current/next TVLV, querier and
243 * bridge state.
244 */
245static struct batadv_mcast_mla_flags
246batadv_mcast_mla_flags_get(struct batadv_priv *bat_priv)

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251 struct net_device *bridge;
252
253 bridge = batadv_mcast_get_bridge(dev);
254
255 memset(&mla_flags, 0, sizeof(mla_flags));
256 mla_flags.enabled = 1;
257 mla_flags.tvlv_flags |= batadv_mcast_mla_rtr_flags_get(bat_priv,
258 bridge);
270 * batadv_mcast_mla_flags_get() - get the new multicast flags
271 * @bat_priv: the bat priv with all the soft interface information
272 *
273 * Return: A set of flags for the current/next TVLV, querier and
274 * bridge state.
275 */
276static struct batadv_mcast_mla_flags
277batadv_mcast_mla_flags_get(struct batadv_priv *bat_priv)

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282 struct net_device *bridge;
283
284 bridge = batadv_mcast_get_bridge(dev);
285
286 memset(&mla_flags, 0, sizeof(mla_flags));
287 mla_flags.enabled = 1;
288 mla_flags.tvlv_flags |= batadv_mcast_mla_rtr_flags_get(bat_priv,
289 bridge);
290 mla_flags.tvlv_flags |= batadv_mcast_mla_forw_flags_get(bat_priv);
259
260 if (!bridge)
261 return mla_flags;
262
263 dev_put(bridge);
264
265 mla_flags.bridged = 1;
266 qr4 = &mla_flags.querier_ipv4;

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801 *
802 * Whenever the multicast TVLV flags this node announces change, this function
803 * should be used to notify userspace about the change.
804 */
805static void batadv_mcast_flags_log(struct batadv_priv *bat_priv, u8 flags)
806{
807 bool old_enabled = bat_priv->mcast.mla_flags.enabled;
808 u8 old_flags = bat_priv->mcast.mla_flags.tvlv_flags;
291
292 if (!bridge)
293 return mla_flags;
294
295 dev_put(bridge);
296
297 mla_flags.bridged = 1;
298 qr4 = &mla_flags.querier_ipv4;

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833 *
834 * Whenever the multicast TVLV flags this node announces change, this function
835 * should be used to notify userspace about the change.
836 */
837static void batadv_mcast_flags_log(struct batadv_priv *bat_priv, u8 flags)
838{
839 bool old_enabled = bat_priv->mcast.mla_flags.enabled;
840 u8 old_flags = bat_priv->mcast.mla_flags.tvlv_flags;
809 char str_old_flags[] = "[.... . ]";
841 char str_old_flags[] = "[.... . .]";
810
842
811 sprintf(str_old_flags, "[%c%c%c%s%s]",
843 sprintf(str_old_flags, "[%c%c%c%s%s%c]",
812 (old_flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES) ? 'U' : '.',
813 (old_flags & BATADV_MCAST_WANT_ALL_IPV4) ? '4' : '.',
814 (old_flags & BATADV_MCAST_WANT_ALL_IPV6) ? '6' : '.',
815 !(old_flags & BATADV_MCAST_WANT_NO_RTR4) ? "R4" : ". ",
844 (old_flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES) ? 'U' : '.',
845 (old_flags & BATADV_MCAST_WANT_ALL_IPV4) ? '4' : '.',
846 (old_flags & BATADV_MCAST_WANT_ALL_IPV6) ? '6' : '.',
847 !(old_flags & BATADV_MCAST_WANT_NO_RTR4) ? "R4" : ". ",
816 !(old_flags & BATADV_MCAST_WANT_NO_RTR6) ? "R6" : ". ");
848 !(old_flags & BATADV_MCAST_WANT_NO_RTR6) ? "R6" : ". ",
849 !(old_flags & BATADV_MCAST_HAVE_MC_PTYPE_CAPA) ? 'P' : '.');
817
818 batadv_dbg(BATADV_DBG_MCAST, bat_priv,
850
851 batadv_dbg(BATADV_DBG_MCAST, bat_priv,
819 "Changing multicast flags from '%s' to '[%c%c%c%s%s]'\n",
852 "Changing multicast flags from '%s' to '[%c%c%c%s%s%c]'\n",
820 old_enabled ? str_old_flags : "<undefined>",
821 (flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES) ? 'U' : '.',
822 (flags & BATADV_MCAST_WANT_ALL_IPV4) ? '4' : '.',
823 (flags & BATADV_MCAST_WANT_ALL_IPV6) ? '6' : '.',
824 !(flags & BATADV_MCAST_WANT_NO_RTR4) ? "R4" : ". ",
853 old_enabled ? str_old_flags : "<undefined>",
854 (flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES) ? 'U' : '.',
855 (flags & BATADV_MCAST_WANT_ALL_IPV4) ? '4' : '.',
856 (flags & BATADV_MCAST_WANT_ALL_IPV6) ? '6' : '.',
857 !(flags & BATADV_MCAST_WANT_NO_RTR4) ? "R4" : ". ",
825 !(flags & BATADV_MCAST_WANT_NO_RTR6) ? "R6" : ". ");
858 !(flags & BATADV_MCAST_WANT_NO_RTR6) ? "R6" : ". ",
859 !(flags & BATADV_MCAST_HAVE_MC_PTYPE_CAPA) ? 'P' : '.');
826}
827
828/**
829 * batadv_mcast_mla_flags_update() - update multicast flags
830 * @bat_priv: the bat priv with all the soft interface information
831 * @flags: flags indicating the new multicast state
832 *
833 * Updates the own multicast tvlv with our current multicast related settings,

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1815 * batadv_mcast_init() - initialize the multicast optimizations structures
1816 * @bat_priv: the bat priv with all the soft interface information
1817 */
1818void batadv_mcast_init(struct batadv_priv *bat_priv)
1819{
1820 batadv_tvlv_handler_register(bat_priv, batadv_mcast_tvlv_ogm_handler,
1821 NULL, NULL, BATADV_TVLV_MCAST, 2,
1822 BATADV_TVLV_HANDLER_OGM_CIFNOTFND);
860}
861
862/**
863 * batadv_mcast_mla_flags_update() - update multicast flags
864 * @bat_priv: the bat priv with all the soft interface information
865 * @flags: flags indicating the new multicast state
866 *
867 * Updates the own multicast tvlv with our current multicast related settings,

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1849 * batadv_mcast_init() - initialize the multicast optimizations structures
1850 * @bat_priv: the bat priv with all the soft interface information
1851 */
1852void batadv_mcast_init(struct batadv_priv *bat_priv)
1853{
1854 batadv_tvlv_handler_register(bat_priv, batadv_mcast_tvlv_ogm_handler,
1855 NULL, NULL, BATADV_TVLV_MCAST, 2,
1856 BATADV_TVLV_HANDLER_OGM_CIFNOTFND);
1857 batadv_tvlv_handler_register(bat_priv, NULL, NULL,
1858 batadv_mcast_forw_tracker_tvlv_handler,
1859 BATADV_TVLV_MCAST_TRACKER, 1,
1860 BATADV_TVLV_HANDLER_OGM_CIFNOTFND);
1823
1824 INIT_DELAYED_WORK(&bat_priv->mcast.work, batadv_mcast_mla_update);
1825 batadv_mcast_start_timer(bat_priv);
1826}
1827
1828/**
1829 * batadv_mcast_mesh_info_put() - put multicast info into a netlink message
1830 * @msg: buffer for the message

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1862 INIT_DELAYED_WORK(&bat_priv->mcast.work, batadv_mcast_mla_update);
1863 batadv_mcast_start_timer(bat_priv);
1864}
1865
1866/**
1867 * batadv_mcast_mesh_info_put() - put multicast info into a netlink message
1868 * @msg: buffer for the message

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