multicast.c (72f7b2deafde895012f93fa4827d4b1307a138e9) multicast.c (ba412080fb6461b5a40dbc5e44186ed029d67b8d)
1/* Copyright (C) 2014-2016 B.A.T.M.A.N. contributors:
2 *
3 * Linus Lüssing
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
8 *

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36#include <linux/kernel.h>
37#include <linux/kref.h>
38#include <linux/list.h>
39#include <linux/lockdep.h>
40#include <linux/netdevice.h>
41#include <linux/printk.h>
42#include <linux/rculist.h>
43#include <linux/rcupdate.h>
1/* Copyright (C) 2014-2016 B.A.T.M.A.N. contributors:
2 *
3 * Linus Lüssing
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
8 *

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36#include <linux/kernel.h>
37#include <linux/kref.h>
38#include <linux/list.h>
39#include <linux/lockdep.h>
40#include <linux/netdevice.h>
41#include <linux/printk.h>
42#include <linux/rculist.h>
43#include <linux/rcupdate.h>
44#include <linux/seq_file.h>
44#include <linux/skbuff.h>
45#include <linux/slab.h>
46#include <linux/spinlock.h>
47#include <linux/stddef.h>
48#include <linux/string.h>
49#include <linux/types.h>
50#include <net/addrconf.h>
51#include <net/if_inet6.h>
52#include <net/ip.h>
53#include <net/ipv6.h>
54
45#include <linux/skbuff.h>
46#include <linux/slab.h>
47#include <linux/spinlock.h>
48#include <linux/stddef.h>
49#include <linux/string.h>
50#include <linux/types.h>
51#include <net/addrconf.h>
52#include <net/if_inet6.h>
53#include <net/ip.h>
54#include <net/ipv6.h>
55
56#include "hard-interface.h"
57#include "hash.h"
58#include "log.h"
55#include "packet.h"
56#include "translation-table.h"
59#include "packet.h"
60#include "translation-table.h"
61#include "tvlv.h"
57
58/**
59 * batadv_mcast_get_bridge - get the bridge on top of the softif if it exists
60 * @soft_iface: netdev struct of the mesh interface
61 *
62 * If the given soft interface has a bridge on top then the refcount
63 * of the according net device is increased.
64 *

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1125void batadv_mcast_init(struct batadv_priv *bat_priv)
1126{
1127 batadv_tvlv_handler_register(bat_priv, batadv_mcast_tvlv_ogm_handler,
1128 NULL, BATADV_TVLV_MCAST, 2,
1129 BATADV_TVLV_HANDLER_OGM_CIFNOTFND);
1130}
1131
1132/**
62
63/**
64 * batadv_mcast_get_bridge - get the bridge on top of the softif if it exists
65 * @soft_iface: netdev struct of the mesh interface
66 *
67 * If the given soft interface has a bridge on top then the refcount
68 * of the according net device is increased.
69 *

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1130void batadv_mcast_init(struct batadv_priv *bat_priv)
1131{
1132 batadv_tvlv_handler_register(bat_priv, batadv_mcast_tvlv_ogm_handler,
1133 NULL, BATADV_TVLV_MCAST, 2,
1134 BATADV_TVLV_HANDLER_OGM_CIFNOTFND);
1135}
1136
1137/**
1138 * batadv_mcast_flags_print_header - print own mcast flags to debugfs table
1139 * @bat_priv: the bat priv with all the soft interface information
1140 * @seq: debugfs table seq_file struct
1141 *
1142 * Prints our own multicast flags including a more specific reason why
1143 * they are set, that is prints the bridge and querier state too, to
1144 * the debugfs table specified via @seq.
1145 */
1146static void batadv_mcast_flags_print_header(struct batadv_priv *bat_priv,
1147 struct seq_file *seq)
1148{
1149 u8 flags = bat_priv->mcast.flags;
1150 char querier4, querier6, shadowing4, shadowing6;
1151 bool bridged = bat_priv->mcast.bridged;
1152
1153 if (bridged) {
1154 querier4 = bat_priv->mcast.querier_ipv4.exists ? '.' : '4';
1155 querier6 = bat_priv->mcast.querier_ipv6.exists ? '.' : '6';
1156 shadowing4 = bat_priv->mcast.querier_ipv4.shadowing ? '4' : '.';
1157 shadowing6 = bat_priv->mcast.querier_ipv6.shadowing ? '6' : '.';
1158 } else {
1159 querier4 = '?';
1160 querier6 = '?';
1161 shadowing4 = '?';
1162 shadowing6 = '?';
1163 }
1164
1165 seq_printf(seq, "Multicast flags (own flags: [%c%c%c])\n",
1166 (flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES) ? 'U' : '.',
1167 (flags & BATADV_MCAST_WANT_ALL_IPV4) ? '4' : '.',
1168 (flags & BATADV_MCAST_WANT_ALL_IPV6) ? '6' : '.');
1169 seq_printf(seq, "* Bridged [U]\t\t\t\t%c\n", bridged ? 'U' : '.');
1170 seq_printf(seq, "* No IGMP/MLD Querier [4/6]:\t\t%c/%c\n",
1171 querier4, querier6);
1172 seq_printf(seq, "* Shadowing IGMP/MLD Querier [4/6]:\t%c/%c\n",
1173 shadowing4, shadowing6);
1174 seq_puts(seq, "-------------------------------------------\n");
1175 seq_printf(seq, " %-10s %s\n", "Originator", "Flags");
1176}
1177
1178/**
1179 * batadv_mcast_flags_seq_print_text - print the mcast flags of other nodes
1180 * @seq: seq file to print on
1181 * @offset: not used
1182 *
1183 * This prints a table of (primary) originators and their according
1184 * multicast flags, including (in the header) our own.
1185 *
1186 * Return: always 0
1187 */
1188int batadv_mcast_flags_seq_print_text(struct seq_file *seq, void *offset)
1189{
1190 struct net_device *net_dev = (struct net_device *)seq->private;
1191 struct batadv_priv *bat_priv = netdev_priv(net_dev);
1192 struct batadv_hard_iface *primary_if;
1193 struct batadv_hashtable *hash = bat_priv->orig_hash;
1194 struct batadv_orig_node *orig_node;
1195 struct hlist_head *head;
1196 u8 flags;
1197 u32 i;
1198
1199 primary_if = batadv_seq_print_text_primary_if_get(seq);
1200 if (!primary_if)
1201 return 0;
1202
1203 batadv_mcast_flags_print_header(bat_priv, seq);
1204
1205 for (i = 0; i < hash->size; i++) {
1206 head = &hash->table[i];
1207
1208 rcu_read_lock();
1209 hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
1210 if (!test_bit(BATADV_ORIG_CAPA_HAS_MCAST,
1211 &orig_node->capa_initialized))
1212 continue;
1213
1214 if (!test_bit(BATADV_ORIG_CAPA_HAS_MCAST,
1215 &orig_node->capabilities)) {
1216 seq_printf(seq, "%pM -\n", orig_node->orig);
1217 continue;
1218 }
1219
1220 flags = orig_node->mcast_flags;
1221
1222 seq_printf(seq, "%pM [%c%c%c]\n", orig_node->orig,
1223 (flags & BATADV_MCAST_WANT_ALL_UNSNOOPABLES)
1224 ? 'U' : '.',
1225 (flags & BATADV_MCAST_WANT_ALL_IPV4)
1226 ? '4' : '.',
1227 (flags & BATADV_MCAST_WANT_ALL_IPV6)
1228 ? '6' : '.');
1229 }
1230 rcu_read_unlock();
1231 }
1232
1233 batadv_hardif_put(primary_if);
1234
1235 return 0;
1236}
1237
1238/**
1133 * batadv_mcast_free - free the multicast optimizations structures
1134 * @bat_priv: the bat priv with all the soft interface information
1135 */
1136void batadv_mcast_free(struct batadv_priv *bat_priv)
1137{
1138 batadv_tvlv_container_unregister(bat_priv, BATADV_TVLV_MCAST, 2);
1139 batadv_tvlv_handler_unregister(bat_priv, BATADV_TVLV_MCAST, 2);
1140

--- 25 unchanged lines hidden --- 		1239 * batadv_mcast_free - free the multicast optimizations structures
1240 * @bat_priv: the bat priv with all the soft interface information
1241 */
1242void batadv_mcast_free(struct batadv_priv *bat_priv)
1243{
1244 batadv_tvlv_container_unregister(bat_priv, BATADV_TVLV_MCAST, 2);
1245 batadv_tvlv_handler_unregister(bat_priv, BATADV_TVLV_MCAST, 2);
1246

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