From: Simon Wunderlich siwu@hrz.tu-chemnitz.de

This is replaced by a userspace program, we don't need this functionality to bloat the kernel.

Signed-off-by: Simon Wunderlich siwu@hrz.tu-chemnitz.de

--- Changes from v4: * remove orig_node->flags (only needed for vis flags) * remove vis from README * remove vis from sysfs description file * remove vis defines in main.h --- Makefile.kbuild | 1 - README | 50 +-- bat_iv_ogm.c | 8 - debugfs.c | 9 - hard-interface.c | 9 - main.c | 11 - main.h | 2 - packet.h | 17 - routing.c | 51 --- routing.h | 2 - send.c | 1 - soft-interface.c | 1 - sysfs-class-net-mesh | 11 - sysfs.c | 72 ---- types.h | 84 ----- vis.c | 936 -------------------------------------------------- vis.h | 36 -- 17 files changed, 2 insertions(+), 1299 deletions(-) delete mode 100644 vis.c delete mode 100644 vis.h

diff --git a/Makefile.kbuild b/Makefile.kbuild index 489bb36..8ddbfe6 100644 --- a/Makefile.kbuild +++ b/Makefile.kbuild @@ -38,4 +38,3 @@ batman-adv-y += soft-interface.o batman-adv-y += sysfs.o batman-adv-y += translation-table.o batman-adv-y += unicast.o -batman-adv-y += vis.o diff --git a/README b/README index c1d8204..897d1f4 100644 --- a/README +++ b/README @@ -69,8 +69,7 @@ folder: # aggregated_ogms gw_bandwidth log_level # ap_isolation gw_mode orig_interval # bonding gw_sel_class routing_algo -# bridge_loop_avoidance hop_penalty vis_mode -# fragmentation +# bridge_loop_avoidance hop_penalty fragmentation

There is a special folder for debugging information: @@ -78,7 +77,7 @@ There is a special folder for debugging information: # ls /sys/kernel/debug/batman_adv/bat0/ # bla_backbone_table log transtable_global # bla_claim_table originators transtable_local -# gateways socket vis_data +# gateways socket

Some of the files contain all sort of status information regard- ing the mesh network. For example, you can view the table of @@ -127,51 +126,6 @@ ously assigned to interfaces now used by batman advanced, e.g. # ifconfig eth0 0.0.0.0

-VISUALIZATION -------------- - -If you want topology visualization, at least one mesh node must -be configured as VIS-server: - -# echo "server" > /sys/class/net/bat0/mesh/vis_mode - -Each node is either configured as "server" or as "client" (de- -fault: "client"). Clients send their topology data to the server -next to them, and server synchronize with other servers. If there -is no server configured (default) within the mesh, no topology -information will be transmitted. With these "synchronizing -servers", there can be 1 or more vis servers sharing the same (or -at least very similar) data. - -When configured as server, you can get a topology snapshot of -your mesh: - -# cat /sys/kernel/debug/batman_adv/bat0/vis_data - -This raw output is intended to be easily parsable and convertable -with other tools. Have a look at the batctl README if you want a -vis output in dot or json format for instance and how those out- -puts could then be visualised in an image. - -The raw format consists of comma separated values per entry where -each entry is giving information about a certain source inter- -face. Each entry can/has to have the following values: --> "mac" - mac address of an originator's source interface - (each line begins with it) --> "TQ mac value" - src mac's link quality towards mac address - of a neighbor originator's interface which - is being used for routing --> "TT mac" - TT announced by source mac --> "PRIMARY" - this is a primary interface --> "SEC mac" - secondary mac address of source - (requires preceding PRIMARY) - -The TQ value has a range from 4 to 255 with 255 being the best. -The TT entries are showing which hosts are connected to the mesh -via bat0 or being bridged into the mesh network. The PRIMARY/SEC -values are only applied on primary interfaces - - LOGGING/DEBUGGING -----------------

diff --git a/bat_iv_ogm.c b/bat_iv_ogm.c index 5e41f7b..8d87f87 100644 --- a/bat_iv_ogm.c +++ b/bat_iv_ogm.c @@ -669,11 +669,9 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface) struct batadv_ogm_packet *batadv_ogm_packet; struct batadv_hard_iface *primary_if; int *ogm_buff_len = &hard_iface->bat_iv.ogm_buff_len; - int vis_server; uint32_t seqno; uint16_t tvlv_len = 0;

- vis_server = atomic_read(&bat_priv->vis_mode); primary_if = batadv_primary_if_get_selected(bat_priv);

if (hard_iface == primary_if) { @@ -694,11 +692,6 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface) batadv_ogm_packet->seqno = htonl(seqno); atomic_inc(&hard_iface->bat_iv.ogm_seqno);

- if (vis_server == BATADV_VIS_TYPE_SERVER_SYNC) - batadv_ogm_packet->flags |= BATADV_VIS_SERVER; - else - batadv_ogm_packet->flags &= ~BATADV_VIS_SERVER; - batadv_iv_ogm_slide_own_bcast_window(hard_iface); batadv_iv_ogm_queue_add(bat_priv, hard_iface->bat_iv.ogm_buff, hard_iface->bat_iv.ogm_buff_len, hard_iface, 1, @@ -772,7 +765,6 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv,

rcu_read_unlock();

- orig_node->flags = batadv_ogm_packet->flags; neigh_node->last_seen = jiffies;

spin_lock_bh(&neigh_node->lq_update_lock); diff --git a/debugfs.c b/debugfs.c index f186a55..049a7a2 100644 --- a/debugfs.c +++ b/debugfs.c @@ -28,7 +28,6 @@ #include "gateway_common.h" #include "gateway_client.h" #include "soft-interface.h" -#include "vis.h" #include "icmp_socket.h" #include "bridge_loop_avoidance.h" #include "distributed-arp-table.h" @@ -300,12 +299,6 @@ static int batadv_transtable_local_open(struct inode *inode, struct file *file) return single_open(file, batadv_tt_local_seq_print_text, net_dev); }

-static int batadv_vis_data_open(struct inode *inode, struct file *file) -{ - struct net_device *net_dev = (struct net_device *)inode->i_private; - return single_open(file, batadv_vis_seq_print_text, net_dev); -} - struct batadv_debuginfo { struct attribute attr; const struct file_operations fops; @@ -356,7 +349,6 @@ static BATADV_DEBUGINFO(dat_cache, S_IRUGO, batadv_dat_cache_open); #endif static BATADV_DEBUGINFO(transtable_local, S_IRUGO, batadv_transtable_local_open); -static BATADV_DEBUGINFO(vis_data, S_IRUGO, batadv_vis_data_open); #ifdef CONFIG_BATMAN_ADV_NC static BATADV_DEBUGINFO(nc_nodes, S_IRUGO, batadv_nc_nodes_open); #endif @@ -373,7 +365,6 @@ static struct batadv_debuginfo *batadv_mesh_debuginfos[] = { &batadv_debuginfo_dat_cache, #endif &batadv_debuginfo_transtable_local, - &batadv_debuginfo_vis_data, #ifdef CONFIG_BATMAN_ADV_NC &batadv_debuginfo_nc_nodes, #endif diff --git a/hard-interface.c b/hard-interface.c index dc4ac29..9746600 100644 --- a/hard-interface.c +++ b/hard-interface.c @@ -194,22 +194,13 @@ out: static void batadv_primary_if_update_addr(struct batadv_priv *bat_priv, struct batadv_hard_iface *oldif) { - struct batadv_vis_packet *vis_packet; struct batadv_hard_iface *primary_if; - struct sk_buff *skb;

primary_if = batadv_primary_if_get_selected(bat_priv); if (!primary_if) goto out;

batadv_dat_init_own_addr(bat_priv, primary_if); - - skb = bat_priv->vis.my_info->skb_packet; - vis_packet = (struct batadv_vis_packet *)skb->data; - memcpy(vis_packet->vis_orig, primary_if->net_dev->dev_addr, ETH_ALEN); - memcpy(vis_packet->sender_orig, - primary_if->net_dev->dev_addr, ETH_ALEN); - batadv_bla_update_orig_address(bat_priv, primary_if, oldif); out: if (primary_if) diff --git a/main.c b/main.c index f257a5b..2a14722 100644 --- a/main.c +++ b/main.c @@ -34,7 +34,6 @@ #include "distributed-arp-table.h" #include "unicast.h" #include "gateway_common.h" -#include "vis.h" #include "hash.h" #include "bat_algo.h" #include "network-coding.h" @@ -107,8 +106,6 @@ int batadv_mesh_init(struct net_device *soft_iface) spin_lock_init(&bat_priv->tt.roam_list_lock); spin_lock_init(&bat_priv->tt.last_changeset_lock); spin_lock_init(&bat_priv->gw.list_lock); - spin_lock_init(&bat_priv->vis.hash_lock); - spin_lock_init(&bat_priv->vis.list_lock); spin_lock_init(&bat_priv->tvlv.container_list_lock); spin_lock_init(&bat_priv->tvlv.handler_list_lock);

@@ -132,10 +129,6 @@ int batadv_mesh_init(struct net_device *soft_iface) batadv_tt_local_add(soft_iface, soft_iface->dev_addr, BATADV_NULL_IFINDEX);

- ret = batadv_vis_init(bat_priv); - if (ret < 0) - goto err; - ret = batadv_bla_init(bat_priv); if (ret < 0) goto err; @@ -170,8 +163,6 @@ void batadv_mesh_free(struct net_device *soft_iface)

batadv_purge_outstanding_packets(bat_priv, NULL);

- batadv_vis_quit(bat_priv); - batadv_gw_node_purge(bat_priv); batadv_originator_free(bat_priv); batadv_nc_free(bat_priv); @@ -347,8 +338,6 @@ static void batadv_recv_handler_init(void) batadv_rx_handler[BATADV_UNICAST_FRAG] = batadv_recv_ucast_frag_packet; /* broadcast packet */ batadv_rx_handler[BATADV_BCAST] = batadv_recv_bcast_packet; - /* vis packet */ - batadv_rx_handler[BATADV_VIS] = batadv_recv_vis_packet; /* unicast tvlv packet */ batadv_rx_handler[BATADV_UNICAST_TVLV] = batadv_recv_unicast_tvlv; } diff --git a/main.h b/main.h index 91d993f..795345f 100644 --- a/main.h +++ b/main.h @@ -86,8 +86,6 @@ /* numbers of originator to contact for any PUT/GET DHT operation */ #define BATADV_DAT_CANDIDATES_NUM 3

-#define BATADV_VIS_INTERVAL 5000 /* 5 seconds */ - /* how much worse secondary interfaces may be to be considered as bonding * candidates */ diff --git a/packet.h b/packet.h index aee6b96..0ce4867 100644 --- a/packet.h +++ b/packet.h @@ -69,12 +69,6 @@ enum batadv_icmp_packettype { BATADV_PARAMETER_PROBLEM = 12, };

-/* vis defines */ -enum batadv_vis_packettype { - BATADV_VIS_TYPE_SERVER_SYNC = 0, - BATADV_VIS_TYPE_CLIENT_UPDATE = 1, -}; - /* fragmentation defines */ enum batadv_unicast_frag_flags { BATADV_UNI_FRAG_HEAD = BIT(0), @@ -257,17 +251,6 @@ struct batadv_bcast_packet {

#pragma pack()

-struct batadv_vis_packet { - struct batadv_header header; - uint8_t vis_type; /* which type of vis-participant sent this? */ - __be32 seqno; /* sequence number */ - uint8_t entries; /* number of entries behind this struct */ - uint8_t reserved; - uint8_t vis_orig[ETH_ALEN]; /* originator reporting its neighbors */ - uint8_t target_orig[ETH_ALEN]; /* who should receive this packet */ - uint8_t sender_orig[ETH_ALEN]; /* who sent or forwarded this packet */ -}; - /** * struct batadv_coded_packet - network coded packet * @header: common batman packet header and ttl of first included packet diff --git a/routing.c b/routing.c index e5671f5..e3040a2 100644 --- a/routing.c +++ b/routing.c @@ -25,7 +25,6 @@ #include "icmp_socket.h" #include "translation-table.h" #include "originator.h" -#include "vis.h" #include "unicast.h" #include "bridge_loop_avoidance.h" #include "distributed-arp-table.h" @@ -1150,53 +1149,3 @@ out: batadv_orig_node_free_ref(orig_node); return ret; } - -int batadv_recv_vis_packet(struct sk_buff *skb, - struct batadv_hard_iface *recv_if) -{ - struct batadv_vis_packet *vis_packet; - struct ethhdr *ethhdr; - struct batadv_priv *bat_priv = netdev_priv(recv_if->soft_iface); - int hdr_size = sizeof(*vis_packet); - - /* keep skb linear */ - if (skb_linearize(skb) < 0) - return NET_RX_DROP; - - if (unlikely(!pskb_may_pull(skb, hdr_size))) - return NET_RX_DROP; - - vis_packet = (struct batadv_vis_packet *)skb->data; - ethhdr = eth_hdr(skb); - - /* not for me */ - if (!batadv_is_my_mac(bat_priv, ethhdr->h_dest)) - return NET_RX_DROP; - - /* ignore own packets */ - if (batadv_is_my_mac(bat_priv, vis_packet->vis_orig)) - return NET_RX_DROP; - - if (batadv_is_my_mac(bat_priv, vis_packet->sender_orig)) - return NET_RX_DROP; - - switch (vis_packet->vis_type) { - case BATADV_VIS_TYPE_SERVER_SYNC: - batadv_receive_server_sync_packet(bat_priv, vis_packet, - skb_headlen(skb)); - break; - - case BATADV_VIS_TYPE_CLIENT_UPDATE: - batadv_receive_client_update_packet(bat_priv, vis_packet, - skb_headlen(skb)); - break; - - default: /* ignore unknown packet */ - break; - } - - /* We take a copy of the data in the packet, so we should - * always free the skbuf. - */ - return NET_RX_DROP; -} diff --git a/routing.h b/routing.h index 0a7983b..b3f53d4 100644 --- a/routing.h +++ b/routing.h @@ -34,8 +34,6 @@ int batadv_recv_ucast_frag_packet(struct sk_buff *skb, struct batadv_hard_iface *recv_if); int batadv_recv_bcast_packet(struct sk_buff *skb, struct batadv_hard_iface *recv_if); -int batadv_recv_vis_packet(struct sk_buff *skb, - struct batadv_hard_iface *recv_if); int batadv_recv_tt_query(struct sk_buff *skb, struct batadv_hard_iface *recv_if); int batadv_recv_roam_adv(struct sk_buff *skb, diff --git a/send.c b/send.c index e9ff8d8..23c7f79 100644 --- a/send.c +++ b/send.c @@ -24,7 +24,6 @@ #include "translation-table.h" #include "soft-interface.h" #include "hard-interface.h" -#include "vis.h" #include "gateway_common.h" #include "originator.h" #include "network-coding.h" diff --git a/soft-interface.c b/soft-interface.c index f71f5ef..a6ab9e4 100644 --- a/soft-interface.c +++ b/soft-interface.c @@ -458,7 +458,6 @@ static int batadv_softif_init_late(struct net_device *dev) atomic_set(&bat_priv->distributed_arp_table, 1); #endif atomic_set(&bat_priv->ap_isolation, 0); - atomic_set(&bat_priv->vis_mode, BATADV_VIS_TYPE_CLIENT_UPDATE); atomic_set(&bat_priv->gw_mode, BATADV_GW_MODE_OFF); atomic_set(&bat_priv->gw_sel_class, 20); atomic_set(&bat_priv->gw.bandwidth_down, 100); diff --git a/sysfs-class-net-mesh b/sysfs-class-net-mesh index bdcd8b4..f00a69b 100644 --- a/sysfs-class-net-mesh +++ b/sysfs-class-net-mesh @@ -88,14 +88,3 @@ Contact: Marek Lindner lindner_marek@yahoo.de Description: Defines the routing procotol this mesh instance uses to find the optimal paths through the mesh. - -What: /sys/class/net/<mesh_iface>/mesh/vis_mode -Date: May 2010 -Contact: Marek Lindner lindner_marek@yahoo.de -Description: - Each batman node only maintains information about its - own local neighborhood, therefore generating graphs - showing the topology of the entire mesh is not easily - feasible without having a central instance to collect - the local topologies from all nodes. This file allows - to activate the collecting (server) mode. diff --git a/sysfs.c b/sysfs.c index b3807f4..cbbb77b 100644 --- a/sysfs.c +++ b/sysfs.c @@ -26,7 +26,6 @@ #include "hard-interface.h" #include "gateway_common.h" #include "gateway_client.h" -#include "vis.h"

static struct net_device *batadv_kobj_to_netdev(struct kobject *obj) { @@ -231,74 +230,6 @@ __batadv_store_uint_attr(const char *buff, size_t count, return ret; }

-static ssize_t batadv_show_vis_mode(struct kobject *kobj, - struct attribute *attr, char *buff) -{ - struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); - int vis_mode = atomic_read(&bat_priv->vis_mode); - const char *mode; - - if (vis_mode == BATADV_VIS_TYPE_CLIENT_UPDATE) - mode = "client"; - else - mode = "server"; - - return sprintf(buff, "%s\n", mode); -} - -static ssize_t batadv_store_vis_mode(struct kobject *kobj, - struct attribute *attr, char *buff, - size_t count) -{ - struct net_device *net_dev = batadv_kobj_to_netdev(kobj); - struct batadv_priv *bat_priv = netdev_priv(net_dev); - unsigned long val; - int ret, vis_mode_tmp = -1; - const char *old_mode, *new_mode; - - ret = kstrtoul(buff, 10, &val); - - if (((count == 2) && (!ret) && - (val == BATADV_VIS_TYPE_CLIENT_UPDATE)) || - (strncmp(buff, "client", 6) == 0) || - (strncmp(buff, "off", 3) == 0)) - vis_mode_tmp = BATADV_VIS_TYPE_CLIENT_UPDATE; - - if (((count == 2) && (!ret) && - (val == BATADV_VIS_TYPE_SERVER_SYNC)) || - (strncmp(buff, "server", 6) == 0)) - vis_mode_tmp = BATADV_VIS_TYPE_SERVER_SYNC; - - if (vis_mode_tmp < 0) { - if (buff[count - 1] == '\n') - buff[count - 1] = '\0'; - - batadv_info(net_dev, - "Invalid parameter for 'vis mode' setting received: %s\n", - buff); - return -EINVAL; - } - - if (atomic_read(&bat_priv->vis_mode) == vis_mode_tmp) - return count; - - if (atomic_read(&bat_priv->vis_mode) == BATADV_VIS_TYPE_CLIENT_UPDATE) - old_mode = "client"; - else - old_mode = "server"; - - if (vis_mode_tmp == BATADV_VIS_TYPE_CLIENT_UPDATE) - new_mode = "client"; - else - new_mode = "server"; - - batadv_info(net_dev, "Changing vis mode from: %s to: %s\n", old_mode, - new_mode); - - atomic_set(&bat_priv->vis_mode, (unsigned int)vis_mode_tmp); - return count; -} - static ssize_t batadv_show_bat_algo(struct kobject *kobj, struct attribute *attr, char *buff) { @@ -427,8 +358,6 @@ BATADV_ATTR_SIF_BOOL(distributed_arp_table, S_IRUGO | S_IWUSR, #endif BATADV_ATTR_SIF_BOOL(fragmentation, S_IRUGO | S_IWUSR, batadv_update_min_mtu); BATADV_ATTR_SIF_BOOL(ap_isolation, S_IRUGO | S_IWUSR, NULL); -static BATADV_ATTR(vis_mode, S_IRUGO | S_IWUSR, batadv_show_vis_mode, - batadv_store_vis_mode); static BATADV_ATTR(routing_algo, S_IRUGO, batadv_show_bat_algo, NULL); static BATADV_ATTR(gw_mode, S_IRUGO | S_IWUSR, batadv_show_gw_mode, batadv_store_gw_mode); @@ -459,7 +388,6 @@ static struct batadv_attribute *batadv_mesh_attrs[] = { #endif &batadv_attr_fragmentation, &batadv_attr_ap_isolation, - &batadv_attr_vis_mode, &batadv_attr_routing_algo, &batadv_attr_gw_mode, &batadv_attr_orig_interval, diff --git a/types.h b/types.h index 71da448..c84f5cc 100644 --- a/types.h +++ b/types.h @@ -99,7 +99,6 @@ struct batadv_hard_iface { * @last_seen: time when last packet from this node was received * @bcast_seqno_reset: time when the broadcast seqno window was reset * @batman_seqno_reset: time when the batman seqno window was reset - * @flags: for now only VIS_SERVER flag * @capabilities: announced capabilities of this originator * @last_ttvn: last seen translation table version number * @tt_crc: CRC of the translation table @@ -147,7 +146,6 @@ struct batadv_orig_node { unsigned long last_seen; unsigned long bcast_seqno_reset; unsigned long batman_seqno_reset; - uint8_t flags; uint8_t capabilities; atomic_t last_ttvn; uint32_t tt_crc; @@ -462,24 +460,6 @@ struct batadv_priv_tvlv { };

/** - * struct batadv_priv_vis - per mesh interface vis data - * @send_list: list of batadv_vis_info packets to sent - * @hash: hash table containing vis data from other nodes in the network - * @hash_lock: lock protecting the hash table - * @list_lock: lock protecting my_info::recv_list - * @work: work queue callback item for vis packet sending - * @my_info: holds this node's vis data sent on a regular basis - */ -struct batadv_priv_vis { - struct list_head send_list; - struct batadv_hashtable *hash; - spinlock_t hash_lock; /* protects hash */ - spinlock_t list_lock; /* protects my_info::recv_list */ - struct delayed_work work; - struct batadv_vis_info *my_info; -}; - -/** * struct batadv_priv_dat - per mesh interface DAT private data * @addr: node DAT address * @hash: hashtable representing the local ARP cache @@ -536,7 +516,6 @@ struct batadv_priv_nc { * enabled * @distributed_arp_table: bool indicating whether distributed ARP table is * enabled - * @vis_mode: vis operation: client or server (see batadv_vis_packettype) * @gw_mode: gateway operation: off, client or server (see batadv_gw_modes) * @gw_sel_class: gateway selection class (applies if gw_mode client) * @orig_interval: OGM broadcast interval in milliseconds @@ -563,7 +542,6 @@ struct batadv_priv_nc { * @gw: gateway data * @tt: translation table data * @tvlv: type-version-length-value data - * @vis: vis data * @dat: distributed arp table data * @network_coding: bool indicating whether network coding is enabled * @batadv_priv_nc: network coding data @@ -583,7 +561,6 @@ struct batadv_priv { #ifdef CONFIG_BATMAN_ADV_DAT atomic_t distributed_arp_table; #endif - atomic_t vis_mode; atomic_t gw_mode; atomic_t gw_sel_class; atomic_t orig_interval; @@ -615,7 +592,6 @@ struct batadv_priv { struct batadv_priv_gw gw; struct batadv_priv_tt tt; struct batadv_priv_tvlv tvlv; - struct batadv_priv_vis vis; #ifdef CONFIG_BATMAN_ADV_DAT struct batadv_priv_dat dat; #endif @@ -910,66 +886,6 @@ struct batadv_frag_packet_list_entry { };

/** - * struct batadv_vis_info - local data for vis information - * @first_seen: timestamp used for purging stale vis info entries - * @recv_list: List of server-neighbors we have received this packet from. This - * packet should not be re-forward to them again. List elements are struct - * batadv_vis_recvlist_node - * @send_list: list of packets to be forwarded - * @refcount: number of contexts the object is used - * @hash_entry: hlist node for batadv_priv_vis::hash - * @bat_priv: pointer to soft_iface this orig node belongs to - * @skb_packet: contains the vis packet - */ -struct batadv_vis_info { - unsigned long first_seen; - struct list_head recv_list; - struct list_head send_list; - struct kref refcount; - struct hlist_node hash_entry; - struct batadv_priv *bat_priv; - struct sk_buff *skb_packet; -} __packed; - -/** - * struct batadv_vis_info_entry - contains link information for vis - * @src: source MAC of the link, all zero for local TT entry - * @dst: destination MAC of the link, client mac address for local TT entry - * @quality: transmission quality of the link, or 0 for local TT entry - */ -struct batadv_vis_info_entry { - uint8_t src[ETH_ALEN]; - uint8_t dest[ETH_ALEN]; - uint8_t quality; -} __packed; - -/** - * struct batadv_vis_recvlist_node - list entry for batadv_vis_info::recv_list - * @list: list node for batadv_vis_info::recv_list - * @mac: MAC address of the originator from where the vis_info was received - */ -struct batadv_vis_recvlist_node { - struct list_head list; - uint8_t mac[ETH_ALEN]; -}; - -/** - * struct batadv_vis_if_list_entry - auxiliary data for vis data generation - * @addr: MAC address of the interface - * @primary: true if this interface is the primary interface - * @list: list node the interface list - * - * While scanning for vis-entries of a particular vis-originator - * this list collects its interfaces to create a subgraph/cluster - * out of them later - */ -struct batadv_vis_if_list_entry { - uint8_t addr[ETH_ALEN]; - bool primary; - struct hlist_node list; -}; - -/** * struct batadv_algo_ops - mesh algorithm callbacks * @list: list node for the batadv_algo_list * @name: name of the algorithm diff --git a/vis.c b/vis.c deleted file mode 100644 index 4983340..0000000 --- a/vis.c +++ /dev/null @@ -1,936 +0,0 @@ -/* Copyright (C) 2008-2013 B.A.T.M.A.N. contributors: - * - * Simon Wunderlich - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - */ - -#include "main.h" -#include "send.h" -#include "translation-table.h" -#include "vis.h" -#include "soft-interface.h" -#include "hard-interface.h" -#include "hash.h" -#include "originator.h" - -#define BATADV_MAX_VIS_PACKET_SIZE 1000 - -/* hash class keys */ -static struct lock_class_key batadv_vis_hash_lock_class_key; - -/* free the info */ -static void batadv_free_info(struct kref *ref) -{ - struct batadv_vis_info *info; - struct batadv_priv *bat_priv; - struct batadv_vis_recvlist_node *entry, *tmp; - - info = container_of(ref, struct batadv_vis_info, refcount); - bat_priv = info->bat_priv; - - list_del_init(&info->send_list); - spin_lock_bh(&bat_priv->vis.list_lock); - list_for_each_entry_safe(entry, tmp, &info->recv_list, list) { - list_del(&entry->list); - kfree(entry); - } - - spin_unlock_bh(&bat_priv->vis.list_lock); - kfree_skb(info->skb_packet); - kfree(info); -} - -/* Compare two vis packets, used by the hashing algorithm */ -static int batadv_vis_info_cmp(const struct hlist_node *node, const void *data2) -{ - const struct batadv_vis_info *d1, *d2; - const struct batadv_vis_packet *p1, *p2; - - d1 = container_of(node, struct batadv_vis_info, hash_entry); - d2 = data2; - p1 = (struct batadv_vis_packet *)d1->skb_packet->data; - p2 = (struct batadv_vis_packet *)d2->skb_packet->data; - return batadv_compare_eth(p1->vis_orig, p2->vis_orig); -} - -/* hash function to choose an entry in a hash table of given size - * hash algorithm from http://en.wikipedia.org/wiki/Hash_table - */ -static uint32_t batadv_vis_info_choose(const void *data, uint32_t size) -{ - const struct batadv_vis_info *vis_info = data; - const struct batadv_vis_packet *packet; - const unsigned char *key; - uint32_t hash = 0; - size_t i; - - packet = (struct batadv_vis_packet *)vis_info->skb_packet->data; - key = packet->vis_orig; - for (i = 0; i < ETH_ALEN; i++) { - hash += key[i]; - hash += (hash << 10); - hash ^= (hash >> 6); - } - - hash += (hash << 3); - hash ^= (hash >> 11); - hash += (hash << 15); - - return hash % size; -} - -static struct batadv_vis_info * -batadv_vis_hash_find(struct batadv_priv *bat_priv, const void *data) -{ - struct batadv_hashtable *hash = bat_priv->vis.hash; - struct hlist_head *head; - struct batadv_vis_info *vis_info, *vis_info_tmp = NULL; - uint32_t index; - - if (!hash) - return NULL; - - index = batadv_vis_info_choose(data, hash->size); - head = &hash->table[index]; - - rcu_read_lock(); - hlist_for_each_entry_rcu(vis_info, head, hash_entry) { - if (!batadv_vis_info_cmp(&vis_info->hash_entry, data)) - continue; - - vis_info_tmp = vis_info; - break; - } - rcu_read_unlock(); - - return vis_info_tmp; -} - -/* insert interface to the list of interfaces of one originator, if it - * does not already exist in the list - */ -static void batadv_vis_data_insert_interface(const uint8_t *interface, - struct hlist_head *if_list, - bool primary) -{ - struct batadv_vis_if_list_entry *entry; - - hlist_for_each_entry(entry, if_list, list) { - if (batadv_compare_eth(entry->addr, interface)) - return; - } - - /* it's a new address, add it to the list */ - entry = kmalloc(sizeof(*entry), GFP_ATOMIC); - if (!entry) - return; - memcpy(entry->addr, interface, ETH_ALEN); - entry->primary = primary; - hlist_add_head(&entry->list, if_list); -} - -static void batadv_vis_data_read_prim_sec(struct seq_file *seq, - const struct hlist_head *if_list) -{ - struct batadv_vis_if_list_entry *entry; - - hlist_for_each_entry(entry, if_list, list) { - if (entry->primary) - seq_puts(seq, "PRIMARY, "); - else - seq_printf(seq, "SEC %pM, ", entry->addr); - } -} - -/* read an entry */ -static ssize_t -batadv_vis_data_read_entry(struct seq_file *seq, - const struct batadv_vis_info_entry *entry, - const uint8_t *src, bool primary) -{ - if (primary && entry->quality == 0) - return seq_printf(seq, "TT %pM, ", entry->dest); - else if (batadv_compare_eth(entry->src, src)) - return seq_printf(seq, "TQ %pM %d, ", entry->dest, - entry->quality); - - return 0; -} - -static void -batadv_vis_data_insert_interfaces(struct hlist_head *list, - struct batadv_vis_packet *packet, - struct batadv_vis_info_entry *entries) -{ - int i; - - for (i = 0; i < packet->entries; i++) { - if (entries[i].quality == 0) - continue; - - if (batadv_compare_eth(entries[i].src, packet->vis_orig)) - continue; - - batadv_vis_data_insert_interface(entries[i].src, list, false); - } -} - -static void batadv_vis_data_read_entries(struct seq_file *seq, - struct hlist_head *list, - struct batadv_vis_packet *packet, - struct batadv_vis_info_entry *entries) -{ - int i; - struct batadv_vis_if_list_entry *entry; - - hlist_for_each_entry(entry, list, list) { - seq_printf(seq, "%pM,", entry->addr); - - for (i = 0; i < packet->entries; i++) - batadv_vis_data_read_entry(seq, &entries[i], - entry->addr, entry->primary); - - /* add primary/secondary records */ - if (batadv_compare_eth(entry->addr, packet->vis_orig)) - batadv_vis_data_read_prim_sec(seq, list); - - seq_puts(seq, "\n"); - } -} - -static void batadv_vis_seq_print_text_bucket(struct seq_file *seq, - const struct hlist_head *head) -{ - struct batadv_vis_info *info; - struct batadv_vis_packet *packet; - uint8_t *entries_pos; - struct batadv_vis_info_entry *entries; - struct batadv_vis_if_list_entry *entry; - struct hlist_node *n; - - HLIST_HEAD(vis_if_list); - - hlist_for_each_entry_rcu(info, head, hash_entry) { - packet = (struct batadv_vis_packet *)info->skb_packet->data; - entries_pos = (uint8_t *)packet + sizeof(*packet); - entries = (struct batadv_vis_info_entry *)entries_pos; - - batadv_vis_data_insert_interface(packet->vis_orig, &vis_if_list, - true); - batadv_vis_data_insert_interfaces(&vis_if_list, packet, - entries); - batadv_vis_data_read_entries(seq, &vis_if_list, packet, - entries); - - hlist_for_each_entry_safe(entry, n, &vis_if_list, list) { - hlist_del(&entry->list); - kfree(entry); - } - } -} - -int batadv_vis_seq_print_text(struct seq_file *seq, void *offset) -{ - struct batadv_hard_iface *primary_if; - struct hlist_head *head; - struct net_device *net_dev = (struct net_device *)seq->private; - struct batadv_priv *bat_priv = netdev_priv(net_dev); - struct batadv_hashtable *hash = bat_priv->vis.hash; - uint32_t i; - int ret = 0; - int vis_server = atomic_read(&bat_priv->vis_mode); - - primary_if = batadv_primary_if_get_selected(bat_priv); - if (!primary_if) - goto out; - - if (vis_server == BATADV_VIS_TYPE_CLIENT_UPDATE) - goto out; - - spin_lock_bh(&bat_priv->vis.hash_lock); - for (i = 0; i < hash->size; i++) { - head = &hash->table[i]; - batadv_vis_seq_print_text_bucket(seq, head); - } - spin_unlock_bh(&bat_priv->vis.hash_lock); - -out: - if (primary_if) - batadv_hardif_free_ref(primary_if); - return ret; -} - -/* add the info packet to the send list, if it was not - * already linked in. - */ -static void batadv_send_list_add(struct batadv_priv *bat_priv, - struct batadv_vis_info *info) -{ - if (list_empty(&info->send_list)) { - kref_get(&info->refcount); - list_add_tail(&info->send_list, &bat_priv->vis.send_list); - } -} - -/* delete the info packet from the send list, if it was - * linked in. - */ -static void batadv_send_list_del(struct batadv_vis_info *info) -{ - if (!list_empty(&info->send_list)) { - list_del_init(&info->send_list); - kref_put(&info->refcount, batadv_free_info); - } -} - -/* tries to add one entry to the receive list. */ -static void batadv_recv_list_add(struct batadv_priv *bat_priv, - struct list_head *recv_list, const char *mac) -{ - struct batadv_vis_recvlist_node *entry; - - entry = kmalloc(sizeof(*entry), GFP_ATOMIC); - if (!entry) - return; - - memcpy(entry->mac, mac, ETH_ALEN); - spin_lock_bh(&bat_priv->vis.list_lock); - list_add_tail(&entry->list, recv_list); - spin_unlock_bh(&bat_priv->vis.list_lock); -} - -/* returns 1 if this mac is in the recv_list */ -static int batadv_recv_list_is_in(struct batadv_priv *bat_priv, - const struct list_head *recv_list, - const char *mac) -{ - const struct batadv_vis_recvlist_node *entry; - - spin_lock_bh(&bat_priv->vis.list_lock); - list_for_each_entry(entry, recv_list, list) { - if (batadv_compare_eth(entry->mac, mac)) { - spin_unlock_bh(&bat_priv->vis.list_lock); - return 1; - } - } - spin_unlock_bh(&bat_priv->vis.list_lock); - return 0; -} - -/* try to add the packet to the vis_hash. return NULL if invalid (e.g. too old, - * broken.. ). vis hash must be locked outside. is_new is set when the packet - * is newer than old entries in the hash. - */ -static struct batadv_vis_info * -batadv_add_packet(struct batadv_priv *bat_priv, - struct batadv_vis_packet *vis_packet, int vis_info_len, - int *is_new, int make_broadcast) -{ - struct batadv_vis_info *info, *old_info; - struct batadv_vis_packet *search_packet, *old_packet; - struct batadv_vis_info search_elem; - struct batadv_vis_packet *packet; - struct sk_buff *tmp_skb; - int hash_added; - size_t len; - size_t max_entries; - - *is_new = 0; - /* sanity check */ - if (!bat_priv->vis.hash) - return NULL; - - /* see if the packet is already in vis_hash */ - search_elem.skb_packet = dev_alloc_skb(sizeof(*search_packet)); - if (!search_elem.skb_packet) - return NULL; - len = sizeof(*search_packet); - tmp_skb = search_elem.skb_packet; - search_packet = (struct batadv_vis_packet *)skb_put(tmp_skb, len); - - memcpy(search_packet->vis_orig, vis_packet->vis_orig, ETH_ALEN); - old_info = batadv_vis_hash_find(bat_priv, &search_elem); - kfree_skb(search_elem.skb_packet); - - if (old_info) { - tmp_skb = old_info->skb_packet; - old_packet = (struct batadv_vis_packet *)tmp_skb->data; - if (!batadv_seq_after(ntohl(vis_packet->seqno), - ntohl(old_packet->seqno))) { - if (old_packet->seqno == vis_packet->seqno) { - batadv_recv_list_add(bat_priv, - &old_info->recv_list, - vis_packet->sender_orig); - return old_info; - } else { - /* newer packet is already in hash. */ - return NULL; - } - } - /* remove old entry */ - batadv_hash_remove(bat_priv->vis.hash, batadv_vis_info_cmp, - batadv_vis_info_choose, old_info); - batadv_send_list_del(old_info); - kref_put(&old_info->refcount, batadv_free_info); - } - - info = kmalloc(sizeof(*info), GFP_ATOMIC); - if (!info) - return NULL; - - len = sizeof(*packet) + vis_info_len; - info->skb_packet = netdev_alloc_skb_ip_align(NULL, len + ETH_HLEN); - if (!info->skb_packet) { - kfree(info); - return NULL; - } - skb_reserve(info->skb_packet, ETH_HLEN); - packet = (struct batadv_vis_packet *)skb_put(info->skb_packet, len); - - kref_init(&info->refcount); - INIT_LIST_HEAD(&info->send_list); - INIT_LIST_HEAD(&info->recv_list); - info->first_seen = jiffies; - info->bat_priv = bat_priv; - memcpy(packet, vis_packet, len); - - /* initialize and add new packet. */ - *is_new = 1; - - /* Make it a broadcast packet, if required */ - if (make_broadcast) - memcpy(packet->target_orig, batadv_broadcast_addr, ETH_ALEN); - - /* repair if entries is longer than packet. */ - max_entries = vis_info_len / sizeof(struct batadv_vis_info_entry); - if (packet->entries > max_entries) - packet->entries = max_entries; - - batadv_recv_list_add(bat_priv, &info->recv_list, packet->sender_orig); - - /* try to add it */ - hash_added = batadv_hash_add(bat_priv->vis.hash, batadv_vis_info_cmp, - batadv_vis_info_choose, info, - &info->hash_entry); - if (hash_added != 0) { - /* did not work (for some reason) */ - kref_put(&info->refcount, batadv_free_info); - info = NULL; - } - - return info; -} - -/* handle the server sync packet, forward if needed. */ -void batadv_receive_server_sync_packet(struct batadv_priv *bat_priv, - struct batadv_vis_packet *vis_packet, - int vis_info_len) -{ - struct batadv_vis_info *info; - int is_new, make_broadcast; - int vis_server = atomic_read(&bat_priv->vis_mode); - - make_broadcast = (vis_server == BATADV_VIS_TYPE_SERVER_SYNC); - - spin_lock_bh(&bat_priv->vis.hash_lock); - info = batadv_add_packet(bat_priv, vis_packet, vis_info_len, - &is_new, make_broadcast); - if (!info) - goto end; - - /* only if we are server ourselves and packet is newer than the one in - * hash. - */ - if (vis_server == BATADV_VIS_TYPE_SERVER_SYNC && is_new) - batadv_send_list_add(bat_priv, info); -end: - spin_unlock_bh(&bat_priv->vis.hash_lock); -} - -/* handle an incoming client update packet and schedule forward if needed. */ -void batadv_receive_client_update_packet(struct batadv_priv *bat_priv, - struct batadv_vis_packet *vis_packet, - int vis_info_len) -{ - struct batadv_vis_info *info; - struct batadv_vis_packet *packet; - int is_new; - int vis_server = atomic_read(&bat_priv->vis_mode); - int are_target = 0; - - /* clients shall not broadcast. */ - if (is_broadcast_ether_addr(vis_packet->target_orig)) - return; - - /* Are we the target for this VIS packet? */ - if (vis_server == BATADV_VIS_TYPE_SERVER_SYNC && - batadv_is_my_mac(bat_priv, vis_packet->target_orig)) - are_target = 1; - - spin_lock_bh(&bat_priv->vis.hash_lock); - info = batadv_add_packet(bat_priv, vis_packet, vis_info_len, - &is_new, are_target); - - if (!info) - goto end; - /* note that outdated packets will be dropped at this point. */ - - packet = (struct batadv_vis_packet *)info->skb_packet->data; - - /* send only if we're the target server or ... */ - if (are_target && is_new) { - packet->vis_type = BATADV_VIS_TYPE_SERVER_SYNC; /* upgrade! */ - batadv_send_list_add(bat_priv, info); - - /* ... we're not the recipient (and thus need to forward). */ - } else if (!batadv_is_my_mac(bat_priv, packet->target_orig)) { - batadv_send_list_add(bat_priv, info); - } - -end: - spin_unlock_bh(&bat_priv->vis.hash_lock); -} - -/* Walk the originators and find the VIS server with the best tq. Set the packet - * address to its address and return the best_tq. - * - * Must be called with the originator hash locked - */ -static int batadv_find_best_vis_server(struct batadv_priv *bat_priv, - struct batadv_vis_info *info) -{ - struct batadv_hashtable *hash = bat_priv->orig_hash; - struct batadv_neigh_node *router; - struct hlist_head *head; - struct batadv_orig_node *orig_node; - struct batadv_vis_packet *packet; - int best_tq = -1; - uint32_t i; - - packet = (struct batadv_vis_packet *)info->skb_packet->data; - - for (i = 0; i < hash->size; i++) { - head = &hash->table[i]; - - rcu_read_lock(); - hlist_for_each_entry_rcu(orig_node, head, hash_entry) { - router = batadv_orig_node_get_router(orig_node); - if (!router) - continue; - - if ((orig_node->flags & BATADV_VIS_SERVER) && - (router->tq_avg > best_tq)) { - best_tq = router->tq_avg; - memcpy(packet->target_orig, orig_node->orig, - ETH_ALEN); - } - batadv_neigh_node_free_ref(router); - } - rcu_read_unlock(); - } - - return best_tq; -} - -/* Return true if the vis packet is full. */ -static bool batadv_vis_packet_full(const struct batadv_vis_info *info) -{ - const struct batadv_vis_packet *packet; - size_t num; - - packet = (struct batadv_vis_packet *)info->skb_packet->data; - num = BATADV_MAX_VIS_PACKET_SIZE / sizeof(struct batadv_vis_info_entry); - - if (num < packet->entries + 1) - return true; - return false; -} - -/* generates a packet of own vis data, - * returns 0 on success, -1 if no packet could be generated - */ -static int batadv_generate_vis_packet(struct batadv_priv *bat_priv) -{ - struct batadv_hashtable *hash = bat_priv->orig_hash; - struct hlist_head *head; - struct batadv_orig_node *orig_node; - struct batadv_neigh_node *router; - struct batadv_vis_info *info = bat_priv->vis.my_info; - struct batadv_vis_packet *packet; - struct batadv_vis_info_entry *entry; - struct batadv_tt_common_entry *tt_common_entry; - uint8_t *packet_pos; - int best_tq = -1; - uint32_t i; - - info->first_seen = jiffies; - packet = (struct batadv_vis_packet *)info->skb_packet->data; - packet->vis_type = atomic_read(&bat_priv->vis_mode); - - memcpy(packet->target_orig, batadv_broadcast_addr, ETH_ALEN); - packet->header.ttl = BATADV_TTL; - packet->seqno = htonl(ntohl(packet->seqno) + 1); - packet->entries = 0; - packet->reserved = 0; - skb_trim(info->skb_packet, sizeof(*packet)); - - if (packet->vis_type == BATADV_VIS_TYPE_CLIENT_UPDATE) { - best_tq = batadv_find_best_vis_server(bat_priv, info); - - if (best_tq < 0) - return best_tq; - } - - for (i = 0; i < hash->size; i++) { - head = &hash->table[i]; - - rcu_read_lock(); - hlist_for_each_entry_rcu(orig_node, head, hash_entry) { - router = batadv_orig_node_get_router(orig_node); - if (!router) - continue; - - if (!batadv_compare_eth(router->addr, orig_node->orig)) - goto next; - - if (router->if_incoming->if_status != BATADV_IF_ACTIVE) - goto next; - - if (router->tq_avg < 1) - goto next; - - /* fill one entry into buffer. */ - packet_pos = skb_put(info->skb_packet, sizeof(*entry)); - entry = (struct batadv_vis_info_entry *)packet_pos; - memcpy(entry->src, - router->if_incoming->net_dev->dev_addr, - ETH_ALEN); - memcpy(entry->dest, orig_node->orig, ETH_ALEN); - entry->quality = router->tq_avg; - packet->entries++; - -next: - batadv_neigh_node_free_ref(router); - - if (batadv_vis_packet_full(info)) - goto unlock; - } - rcu_read_unlock(); - } - - hash = bat_priv->tt.local_hash; - - for (i = 0; i < hash->size; i++) { - head = &hash->table[i]; - - rcu_read_lock(); - hlist_for_each_entry_rcu(tt_common_entry, head, - hash_entry) { - packet_pos = skb_put(info->skb_packet, sizeof(*entry)); - entry = (struct batadv_vis_info_entry *)packet_pos; - memset(entry->src, 0, ETH_ALEN); - memcpy(entry->dest, tt_common_entry->addr, ETH_ALEN); - entry->quality = 0; /* 0 means TT */ - packet->entries++; - - if (batadv_vis_packet_full(info)) - goto unlock; - } - rcu_read_unlock(); - } - - return 0; - -unlock: - rcu_read_unlock(); - return 0; -} - -/* free old vis packets. Must be called with this vis_hash_lock - * held - */ -static void batadv_purge_vis_packets(struct batadv_priv *bat_priv) -{ - uint32_t i; - struct batadv_hashtable *hash = bat_priv->vis.hash; - struct hlist_node *node_tmp; - struct hlist_head *head; - struct batadv_vis_info *info; - - for (i = 0; i < hash->size; i++) { - head = &hash->table[i]; - - hlist_for_each_entry_safe(info, node_tmp, - head, hash_entry) { - /* never purge own data. */ - if (info == bat_priv->vis.my_info) - continue; - - if (batadv_has_timed_out(info->first_seen, - BATADV_VIS_TIMEOUT)) { - hlist_del(&info->hash_entry); - batadv_send_list_del(info); - kref_put(&info->refcount, batadv_free_info); - } - } - } -} - -static void batadv_broadcast_vis_packet(struct batadv_priv *bat_priv, - struct batadv_vis_info *info) -{ - struct batadv_hashtable *hash = bat_priv->orig_hash; - struct hlist_head *head; - struct batadv_orig_node *orig_node; - struct batadv_vis_packet *packet; - struct sk_buff *skb; - uint32_t i, res; - - - packet = (struct batadv_vis_packet *)info->skb_packet->data; - - /* send to all routers in range. */ - for (i = 0; i < hash->size; i++) { - head = &hash->table[i]; - - rcu_read_lock(); - hlist_for_each_entry_rcu(orig_node, head, hash_entry) { - /* if it's a vis server and reachable, send it. */ - if (!(orig_node->flags & BATADV_VIS_SERVER)) - continue; - - /* don't send it if we already received the packet from - * this node. - */ - if (batadv_recv_list_is_in(bat_priv, &info->recv_list, - orig_node->orig)) - continue; - - memcpy(packet->target_orig, orig_node->orig, ETH_ALEN); - skb = skb_clone(info->skb_packet, GFP_ATOMIC); - if (!skb) - continue; - - res = batadv_send_skb_to_orig(skb, orig_node, NULL); - if (res == NET_XMIT_DROP) - kfree_skb(skb); - } - rcu_read_unlock(); - } -} - -static void batadv_unicast_vis_packet(struct batadv_priv *bat_priv, - struct batadv_vis_info *info) -{ - struct batadv_orig_node *orig_node; - struct sk_buff *skb; - struct batadv_vis_packet *packet; - - packet = (struct batadv_vis_packet *)info->skb_packet->data; - - orig_node = batadv_orig_hash_find(bat_priv, packet->target_orig); - if (!orig_node) - goto out; - - skb = skb_clone(info->skb_packet, GFP_ATOMIC); - if (!skb) - goto out; - - if (batadv_send_skb_to_orig(skb, orig_node, NULL) == NET_XMIT_DROP) - kfree_skb(skb); - -out: - if (orig_node) - batadv_orig_node_free_ref(orig_node); -} - -/* only send one vis packet. called from batadv_send_vis_packets() */ -static void batadv_send_vis_packet(struct batadv_priv *bat_priv, - struct batadv_vis_info *info) -{ - struct batadv_hard_iface *primary_if; - struct batadv_vis_packet *packet; - - primary_if = batadv_primary_if_get_selected(bat_priv); - if (!primary_if) - goto out; - - packet = (struct batadv_vis_packet *)info->skb_packet->data; - if (packet->header.ttl < 2) { - pr_debug("Error - can't send vis packet: ttl exceeded\n"); - goto out; - } - - memcpy(packet->sender_orig, primary_if->net_dev->dev_addr, ETH_ALEN); - packet->header.ttl--; - - if (is_broadcast_ether_addr(packet->target_orig)) - batadv_broadcast_vis_packet(bat_priv, info); - else - batadv_unicast_vis_packet(bat_priv, info); - packet->header.ttl++; /* restore TTL */ - -out: - if (primary_if) - batadv_hardif_free_ref(primary_if); -} - -/* called from timer; send (and maybe generate) vis packet. */ -static void batadv_send_vis_packets(struct work_struct *work) -{ - struct delayed_work *delayed_work; - struct batadv_priv *bat_priv; - struct batadv_priv_vis *priv_vis; - struct batadv_vis_info *info; - - delayed_work = container_of(work, struct delayed_work, work); - priv_vis = container_of(delayed_work, struct batadv_priv_vis, work); - bat_priv = container_of(priv_vis, struct batadv_priv, vis); - spin_lock_bh(&bat_priv->vis.hash_lock); - batadv_purge_vis_packets(bat_priv); - - if (batadv_generate_vis_packet(bat_priv) == 0) { - /* schedule if generation was successful */ - batadv_send_list_add(bat_priv, bat_priv->vis.my_info); - } - - while (!list_empty(&bat_priv->vis.send_list)) { - info = list_first_entry(&bat_priv->vis.send_list, - typeof(*info), send_list); - - kref_get(&info->refcount); - spin_unlock_bh(&bat_priv->vis.hash_lock); - - batadv_send_vis_packet(bat_priv, info); - - spin_lock_bh(&bat_priv->vis.hash_lock); - batadv_send_list_del(info); - kref_put(&info->refcount, batadv_free_info); - } - spin_unlock_bh(&bat_priv->vis.hash_lock); - - queue_delayed_work(batadv_event_workqueue, &bat_priv->vis.work, - msecs_to_jiffies(BATADV_VIS_INTERVAL)); -} - -/* init the vis server. this may only be called when if_list is already - * initialized (e.g. bat0 is initialized, interfaces have been added) - */ -int batadv_vis_init(struct batadv_priv *bat_priv) -{ - struct batadv_vis_packet *packet; - int hash_added; - unsigned int len; - unsigned long first_seen; - struct sk_buff *tmp_skb; - - if (bat_priv->vis.hash) - return 0; - - spin_lock_bh(&bat_priv->vis.hash_lock); - - bat_priv->vis.hash = batadv_hash_new(256); - if (!bat_priv->vis.hash) { - pr_err("Can't initialize vis_hash\n"); - goto err; - } - - batadv_hash_set_lock_class(bat_priv->vis.hash, - &batadv_vis_hash_lock_class_key); - - bat_priv->vis.my_info = kmalloc(BATADV_MAX_VIS_PACKET_SIZE, GFP_ATOMIC); - if (!bat_priv->vis.my_info) - goto err; - - len = sizeof(*packet) + BATADV_MAX_VIS_PACKET_SIZE + ETH_HLEN; - bat_priv->vis.my_info->skb_packet = netdev_alloc_skb_ip_align(NULL, - len); - if (!bat_priv->vis.my_info->skb_packet) - goto free_info; - - skb_reserve(bat_priv->vis.my_info->skb_packet, ETH_HLEN); - tmp_skb = bat_priv->vis.my_info->skb_packet; - packet = (struct batadv_vis_packet *)skb_put(tmp_skb, sizeof(*packet)); - - /* prefill the vis info */ - first_seen = jiffies - msecs_to_jiffies(BATADV_VIS_INTERVAL); - bat_priv->vis.my_info->first_seen = first_seen; - INIT_LIST_HEAD(&bat_priv->vis.my_info->recv_list); - INIT_LIST_HEAD(&bat_priv->vis.my_info->send_list); - kref_init(&bat_priv->vis.my_info->refcount); - bat_priv->vis.my_info->bat_priv = bat_priv; - packet->header.version = BATADV_COMPAT_VERSION; - packet->header.packet_type = BATADV_VIS; - packet->header.ttl = BATADV_TTL; - packet->seqno = 0; - packet->reserved = 0; - packet->entries = 0; - - INIT_LIST_HEAD(&bat_priv->vis.send_list); - - hash_added = batadv_hash_add(bat_priv->vis.hash, batadv_vis_info_cmp, - batadv_vis_info_choose, - bat_priv->vis.my_info, - &bat_priv->vis.my_info->hash_entry); - if (hash_added != 0) { - pr_err("Can't add own vis packet into hash\n"); - /* not in hash, need to remove it manually. */ - kref_put(&bat_priv->vis.my_info->refcount, batadv_free_info); - goto err; - } - - spin_unlock_bh(&bat_priv->vis.hash_lock); - - INIT_DELAYED_WORK(&bat_priv->vis.work, batadv_send_vis_packets); - queue_delayed_work(batadv_event_workqueue, &bat_priv->vis.work, - msecs_to_jiffies(BATADV_VIS_INTERVAL)); - - return 0; - -free_info: - kfree(bat_priv->vis.my_info); - bat_priv->vis.my_info = NULL; -err: - spin_unlock_bh(&bat_priv->vis.hash_lock); - batadv_vis_quit(bat_priv); - return -ENOMEM; -} - -/* Decrease the reference count on a hash item info */ -static void batadv_free_info_ref(struct hlist_node *node, void *arg) -{ - struct batadv_vis_info *info; - - info = container_of(node, struct batadv_vis_info, hash_entry); - batadv_send_list_del(info); - kref_put(&info->refcount, batadv_free_info); -} - -/* shutdown vis-server */ -void batadv_vis_quit(struct batadv_priv *bat_priv) -{ - if (!bat_priv->vis.hash) - return; - - cancel_delayed_work_sync(&bat_priv->vis.work); - - spin_lock_bh(&bat_priv->vis.hash_lock); - /* properly remove, kill timers ... */ - batadv_hash_delete(bat_priv->vis.hash, batadv_free_info_ref, NULL); - bat_priv->vis.hash = NULL; - bat_priv->vis.my_info = NULL; - spin_unlock_bh(&bat_priv->vis.hash_lock); -} diff --git a/vis.h b/vis.h deleted file mode 100644 index ad92b0e..0000000 --- a/vis.h +++ /dev/null @@ -1,36 +0,0 @@ -/* Copyright (C) 2008-2013 B.A.T.M.A.N. contributors: - * - * Simon Wunderlich, Marek Lindner - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - */ - -#ifndef _NET_BATMAN_ADV_VIS_H_ -#define _NET_BATMAN_ADV_VIS_H_ - -/* timeout of vis packets in milliseconds */ -#define BATADV_VIS_TIMEOUT 200000 - -int batadv_vis_seq_print_text(struct seq_file *seq, void *offset); -void batadv_receive_server_sync_packet(struct batadv_priv *bat_priv, - struct batadv_vis_packet *vis_packet, - int vis_info_len); -void batadv_receive_client_update_packet(struct batadv_priv *bat_priv, - struct batadv_vis_packet *vis_packet, - int vis_info_len); -int batadv_vis_init(struct batadv_priv *bat_priv); -void batadv_vis_quit(struct batadv_priv *bat_priv); - -#endif /* _NET_BATMAN_ADV_VIS_H_ */