diff options
Diffstat (limited to 'net/batman-adv/main.c')
-rw-r--r-- | net/batman-adv/main.c | 709 |
1 files changed, 12 insertions, 697 deletions
diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c index 5f2974bd1227..fe4c5e29f96b 100644 --- a/net/batman-adv/main.c +++ b/net/batman-adv/main.c @@ -31,16 +31,13 @@ #include <linux/kernel.h> #include <linux/kref.h> #include <linux/list.h> -#include <linux/lockdep.h> #include <linux/module.h> -#include <linux/moduleparam.h> #include <linux/netdevice.h> -#include <linux/pkt_sched.h> +#include <linux/printk.h> #include <linux/rculist.h> #include <linux/rcupdate.h> #include <linux/seq_file.h> #include <linux/skbuff.h> -#include <linux/slab.h> #include <linux/spinlock.h> #include <linux/stddef.h> #include <linux/string.h> @@ -49,6 +46,8 @@ #include <net/rtnetlink.h> #include "bat_algo.h" +#include "bat_iv_ogm.h" +#include "bat_v.h" #include "bridge_loop_avoidance.h" #include "debugfs.h" #include "distributed-arp-table.h" @@ -56,13 +55,16 @@ #include "gateway_common.h" #include "hard-interface.h" #include "icmp_socket.h" +#include "log.h" #include "multicast.h" +#include "netlink.h" #include "network-coding.h" #include "originator.h" #include "packet.h" #include "routing.h" #include "send.h" #include "soft-interface.h" +#include "tp_meter.h" #include "translation-table.h" /* List manipulations on hardif_list have to be rtnl_lock()'ed, @@ -71,8 +73,6 @@ struct list_head batadv_hardif_list; static int (*batadv_rx_handler[256])(struct sk_buff *, struct batadv_hard_iface *); -char batadv_routing_algo[20] = "BATMAN_IV"; -static struct hlist_head batadv_algo_list; unsigned char batadv_broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; @@ -83,13 +83,14 @@ static void batadv_recv_handler_init(void); static int __init batadv_init(void) { INIT_LIST_HEAD(&batadv_hardif_list); - INIT_HLIST_HEAD(&batadv_algo_list); + batadv_algo_init(); batadv_recv_handler_init(); batadv_v_init(); batadv_iv_init(); batadv_nc_init(); + batadv_tp_meter_init(); batadv_event_workqueue = create_singlethread_workqueue("bat_events"); @@ -101,6 +102,7 @@ static int __init batadv_init(void) register_netdevice_notifier(&batadv_hard_if_notifier); rtnl_link_register(&batadv_link_ops); + batadv_netlink_register(); pr_info("B.A.T.M.A.N. advanced %s (compatibility version %i) loaded\n", BATADV_SOURCE_VERSION, BATADV_COMPAT_VERSION); @@ -111,6 +113,7 @@ static int __init batadv_init(void) static void __exit batadv_exit(void) { batadv_debugfs_destroy(); + batadv_netlink_unregister(); rtnl_link_unregister(&batadv_link_ops); unregister_netdevice_notifier(&batadv_hard_if_notifier); batadv_hardif_remove_interfaces(); @@ -141,6 +144,7 @@ int batadv_mesh_init(struct net_device *soft_iface) spin_lock_init(&bat_priv->tvlv.container_list_lock); spin_lock_init(&bat_priv->tvlv.handler_list_lock); spin_lock_init(&bat_priv->softif_vlan_list_lock); + spin_lock_init(&bat_priv->tp_list_lock); INIT_HLIST_HEAD(&bat_priv->forw_bat_list); INIT_HLIST_HEAD(&bat_priv->forw_bcast_list); @@ -159,6 +163,7 @@ int batadv_mesh_init(struct net_device *soft_iface) INIT_HLIST_HEAD(&bat_priv->tvlv.container_list); INIT_HLIST_HEAD(&bat_priv->tvlv.handler_list); INIT_HLIST_HEAD(&bat_priv->softif_vlan_list); + INIT_HLIST_HEAD(&bat_priv->tp_list); ret = batadv_v_mesh_init(bat_priv); if (ret < 0) @@ -538,78 +543,6 @@ void batadv_recv_handler_unregister(u8 packet_type) batadv_rx_handler[packet_type] = batadv_recv_unhandled_packet; } -static struct batadv_algo_ops *batadv_algo_get(char *name) -{ - struct batadv_algo_ops *bat_algo_ops = NULL, *bat_algo_ops_tmp; - - hlist_for_each_entry(bat_algo_ops_tmp, &batadv_algo_list, list) { - if (strcmp(bat_algo_ops_tmp->name, name) != 0) - continue; - - bat_algo_ops = bat_algo_ops_tmp; - break; - } - - return bat_algo_ops; -} - -int batadv_algo_register(struct batadv_algo_ops *bat_algo_ops) -{ - struct batadv_algo_ops *bat_algo_ops_tmp; - - bat_algo_ops_tmp = batadv_algo_get(bat_algo_ops->name); - if (bat_algo_ops_tmp) { - pr_info("Trying to register already registered routing algorithm: %s\n", - bat_algo_ops->name); - return -EEXIST; - } - - /* all algorithms must implement all ops (for now) */ - if (!bat_algo_ops->bat_iface_enable || - !bat_algo_ops->bat_iface_disable || - !bat_algo_ops->bat_iface_update_mac || - !bat_algo_ops->bat_primary_iface_set || - !bat_algo_ops->bat_ogm_schedule || - !bat_algo_ops->bat_ogm_emit || - !bat_algo_ops->bat_neigh_cmp || - !bat_algo_ops->bat_neigh_is_similar_or_better) { - pr_info("Routing algo '%s' does not implement required ops\n", - bat_algo_ops->name); - return -EINVAL; - } - - INIT_HLIST_NODE(&bat_algo_ops->list); - hlist_add_head(&bat_algo_ops->list, &batadv_algo_list); - - return 0; -} - -int batadv_algo_select(struct batadv_priv *bat_priv, char *name) -{ - struct batadv_algo_ops *bat_algo_ops; - - bat_algo_ops = batadv_algo_get(name); - if (!bat_algo_ops) - return -EINVAL; - - bat_priv->bat_algo_ops = bat_algo_ops; - - return 0; -} - -int batadv_algo_seq_print_text(struct seq_file *seq, void *offset) -{ - struct batadv_algo_ops *bat_algo_ops; - - seq_puts(seq, "Available routing algorithms:\n"); - - hlist_for_each_entry(bat_algo_ops, &batadv_algo_list, list) { - seq_printf(seq, " * %s\n", bat_algo_ops->name); - } - - return 0; -} - /** * batadv_skb_crc32 - calculate CRC32 of the whole packet and skip bytes in * the header @@ -644,594 +577,6 @@ __be32 batadv_skb_crc32(struct sk_buff *skb, u8 *payload_ptr) } /** - * batadv_tvlv_handler_release - release tvlv handler from lists and queue for - * free after rcu grace period - * @ref: kref pointer of the tvlv - */ -static void batadv_tvlv_handler_release(struct kref *ref) -{ - struct batadv_tvlv_handler *tvlv_handler; - - tvlv_handler = container_of(ref, struct batadv_tvlv_handler, refcount); - kfree_rcu(tvlv_handler, rcu); -} - -/** - * batadv_tvlv_handler_put - decrement the tvlv container refcounter and - * possibly release it - * @tvlv_handler: the tvlv handler to free - */ -static void batadv_tvlv_handler_put(struct batadv_tvlv_handler *tvlv_handler) -{ - kref_put(&tvlv_handler->refcount, batadv_tvlv_handler_release); -} - -/** - * batadv_tvlv_handler_get - retrieve tvlv handler from the tvlv handler list - * based on the provided type and version (both need to match) - * @bat_priv: the bat priv with all the soft interface information - * @type: tvlv handler type to look for - * @version: tvlv handler version to look for - * - * Return: tvlv handler if found or NULL otherwise. - */ -static struct batadv_tvlv_handler * -batadv_tvlv_handler_get(struct batadv_priv *bat_priv, u8 type, u8 version) -{ - struct batadv_tvlv_handler *tvlv_handler_tmp, *tvlv_handler = NULL; - - rcu_read_lock(); - hlist_for_each_entry_rcu(tvlv_handler_tmp, - &bat_priv->tvlv.handler_list, list) { - if (tvlv_handler_tmp->type != type) - continue; - - if (tvlv_handler_tmp->version != version) - continue; - - if (!kref_get_unless_zero(&tvlv_handler_tmp->refcount)) - continue; - - tvlv_handler = tvlv_handler_tmp; - break; - } - rcu_read_unlock(); - - return tvlv_handler; -} - -/** - * batadv_tvlv_container_release - release tvlv from lists and free - * @ref: kref pointer of the tvlv - */ -static void batadv_tvlv_container_release(struct kref *ref) -{ - struct batadv_tvlv_container *tvlv; - - tvlv = container_of(ref, struct batadv_tvlv_container, refcount); - kfree(tvlv); -} - -/** - * batadv_tvlv_container_put - decrement the tvlv container refcounter and - * possibly release it - * @tvlv: the tvlv container to free - */ -static void batadv_tvlv_container_put(struct batadv_tvlv_container *tvlv) -{ - kref_put(&tvlv->refcount, batadv_tvlv_container_release); -} - -/** - * batadv_tvlv_container_get - retrieve tvlv container from the tvlv container - * list based on the provided type and version (both need to match) - * @bat_priv: the bat priv with all the soft interface information - * @type: tvlv container type to look for - * @version: tvlv container version to look for - * - * Has to be called with the appropriate locks being acquired - * (tvlv.container_list_lock). - * - * Return: tvlv container if found or NULL otherwise. - */ -static struct batadv_tvlv_container * -batadv_tvlv_container_get(struct batadv_priv *bat_priv, u8 type, u8 version) -{ - struct batadv_tvlv_container *tvlv_tmp, *tvlv = NULL; - - lockdep_assert_held(&bat_priv->tvlv.container_list_lock); - - hlist_for_each_entry(tvlv_tmp, &bat_priv->tvlv.container_list, list) { - if (tvlv_tmp->tvlv_hdr.type != type) - continue; - - if (tvlv_tmp->tvlv_hdr.version != version) - continue; - - kref_get(&tvlv_tmp->refcount); - tvlv = tvlv_tmp; - break; - } - - return tvlv; -} - -/** - * batadv_tvlv_container_list_size - calculate the size of the tvlv container - * list entries - * @bat_priv: the bat priv with all the soft interface information - * - * Has to be called with the appropriate locks being acquired - * (tvlv.container_list_lock). - * - * Return: size of all currently registered tvlv containers in bytes. - */ -static u16 batadv_tvlv_container_list_size(struct batadv_priv *bat_priv) -{ - struct batadv_tvlv_container *tvlv; - u16 tvlv_len = 0; - - lockdep_assert_held(&bat_priv->tvlv.container_list_lock); - - hlist_for_each_entry(tvlv, &bat_priv->tvlv.container_list, list) { - tvlv_len += sizeof(struct batadv_tvlv_hdr); - tvlv_len += ntohs(tvlv->tvlv_hdr.len); - } - - return tvlv_len; -} - -/** - * batadv_tvlv_container_remove - remove tvlv container from the tvlv container - * list - * @bat_priv: the bat priv with all the soft interface information - * @tvlv: the to be removed tvlv container - * - * Has to be called with the appropriate locks being acquired - * (tvlv.container_list_lock). - */ -static void batadv_tvlv_container_remove(struct batadv_priv *bat_priv, - struct batadv_tvlv_container *tvlv) -{ - lockdep_assert_held(&bat_priv->tvlv.container_list_lock); - - if (!tvlv) - return; - - hlist_del(&tvlv->list); - - /* first call to decrement the counter, second call to free */ - batadv_tvlv_container_put(tvlv); - batadv_tvlv_container_put(tvlv); -} - -/** - * batadv_tvlv_container_unregister - unregister tvlv container based on the - * provided type and version (both need to match) - * @bat_priv: the bat priv with all the soft interface information - * @type: tvlv container type to unregister - * @version: tvlv container type to unregister - */ -void batadv_tvlv_container_unregister(struct batadv_priv *bat_priv, - u8 type, u8 version) -{ - struct batadv_tvlv_container *tvlv; - - spin_lock_bh(&bat_priv->tvlv.container_list_lock); - tvlv = batadv_tvlv_container_get(bat_priv, type, version); - batadv_tvlv_container_remove(bat_priv, tvlv); - spin_unlock_bh(&bat_priv->tvlv.container_list_lock); -} - -/** - * batadv_tvlv_container_register - register tvlv type, version and content - * to be propagated with each (primary interface) OGM - * @bat_priv: the bat priv with all the soft interface information - * @type: tvlv container type - * @version: tvlv container version - * @tvlv_value: tvlv container content - * @tvlv_value_len: tvlv container content length - * - * If a container of the same type and version was already registered the new - * content is going to replace the old one. - */ -void batadv_tvlv_container_register(struct batadv_priv *bat_priv, - u8 type, u8 version, - void *tvlv_value, u16 tvlv_value_len) -{ - struct batadv_tvlv_container *tvlv_old, *tvlv_new; - - if (!tvlv_value) - tvlv_value_len = 0; - - tvlv_new = kzalloc(sizeof(*tvlv_new) + tvlv_value_len, GFP_ATOMIC); - if (!tvlv_new) - return; - - tvlv_new->tvlv_hdr.version = version; - tvlv_new->tvlv_hdr.type = type; - tvlv_new->tvlv_hdr.len = htons(tvlv_value_len); - - memcpy(tvlv_new + 1, tvlv_value, ntohs(tvlv_new->tvlv_hdr.len)); - INIT_HLIST_NODE(&tvlv_new->list); - kref_init(&tvlv_new->refcount); - - spin_lock_bh(&bat_priv->tvlv.container_list_lock); - tvlv_old = batadv_tvlv_container_get(bat_priv, type, version); - batadv_tvlv_container_remove(bat_priv, tvlv_old); - hlist_add_head(&tvlv_new->list, &bat_priv->tvlv.container_list); - spin_unlock_bh(&bat_priv->tvlv.container_list_lock); -} - -/** - * batadv_tvlv_realloc_packet_buff - reallocate packet buffer to accommodate - * requested packet size - * @packet_buff: packet buffer - * @packet_buff_len: packet buffer size - * @min_packet_len: requested packet minimum size - * @additional_packet_len: requested additional packet size on top of minimum - * size - * - * Return: true of the packet buffer could be changed to the requested size, - * false otherwise. - */ -static bool batadv_tvlv_realloc_packet_buff(unsigned char **packet_buff, - int *packet_buff_len, - int min_packet_len, - int additional_packet_len) -{ - unsigned char *new_buff; - - new_buff = kmalloc(min_packet_len + additional_packet_len, GFP_ATOMIC); - - /* keep old buffer if kmalloc should fail */ - if (!new_buff) - return false; - - memcpy(new_buff, *packet_buff, min_packet_len); - kfree(*packet_buff); - *packet_buff = new_buff; - *packet_buff_len = min_packet_len + additional_packet_len; - - return true; -} - -/** - * batadv_tvlv_container_ogm_append - append tvlv container content to given - * OGM packet buffer - * @bat_priv: the bat priv with all the soft interface information - * @packet_buff: ogm packet buffer - * @packet_buff_len: ogm packet buffer size including ogm header and tvlv - * content - * @packet_min_len: ogm header size to be preserved for the OGM itself - * - * The ogm packet might be enlarged or shrunk depending on the current size - * and the size of the to-be-appended tvlv containers. - * - * Return: size of all appended tvlv containers in bytes. - */ -u16 batadv_tvlv_container_ogm_append(struct batadv_priv *bat_priv, - unsigned char **packet_buff, - int *packet_buff_len, int packet_min_len) -{ - struct batadv_tvlv_container *tvlv; - struct batadv_tvlv_hdr *tvlv_hdr; - u16 tvlv_value_len; - void *tvlv_value; - bool ret; - - spin_lock_bh(&bat_priv->tvlv.container_list_lock); - tvlv_value_len = batadv_tvlv_container_list_size(bat_priv); - - ret = batadv_tvlv_realloc_packet_buff(packet_buff, packet_buff_len, - packet_min_len, tvlv_value_len); - - if (!ret) - goto end; - - if (!tvlv_value_len) - goto end; - - tvlv_value = (*packet_buff) + packet_min_len; - - hlist_for_each_entry(tvlv, &bat_priv->tvlv.container_list, list) { - tvlv_hdr = tvlv_value; - tvlv_hdr->type = tvlv->tvlv_hdr.type; - tvlv_hdr->version = tvlv->tvlv_hdr.version; - tvlv_hdr->len = tvlv->tvlv_hdr.len; - tvlv_value = tvlv_hdr + 1; - memcpy(tvlv_value, tvlv + 1, ntohs(tvlv->tvlv_hdr.len)); - tvlv_value = (u8 *)tvlv_value + ntohs(tvlv->tvlv_hdr.len); - } - -end: - spin_unlock_bh(&bat_priv->tvlv.container_list_lock); - return tvlv_value_len; -} - -/** - * batadv_tvlv_call_handler - parse the given tvlv buffer to call the - * appropriate handlers - * @bat_priv: the bat priv with all the soft interface information - * @tvlv_handler: tvlv callback function handling the tvlv content - * @ogm_source: flag indicating whether the tvlv is an ogm or a unicast packet - * @orig_node: orig node emitting the ogm packet - * @src: source mac address of the unicast packet - * @dst: destination mac address of the unicast packet - * @tvlv_value: tvlv content - * @tvlv_value_len: tvlv content length - * - * Return: success if handler was not found or the return value of the handler - * callback. - */ -static int batadv_tvlv_call_handler(struct batadv_priv *bat_priv, - struct batadv_tvlv_handler *tvlv_handler, - bool ogm_source, - struct batadv_orig_node *orig_node, - u8 *src, u8 *dst, - void *tvlv_value, u16 tvlv_value_len) -{ - if (!tvlv_handler) - return NET_RX_SUCCESS; - - if (ogm_source) { - if (!tvlv_handler->ogm_handler) - return NET_RX_SUCCESS; - - if (!orig_node) - return NET_RX_SUCCESS; - - tvlv_handler->ogm_handler(bat_priv, orig_node, - BATADV_NO_FLAGS, - tvlv_value, tvlv_value_len); - tvlv_handler->flags |= BATADV_TVLV_HANDLER_OGM_CALLED; - } else { - if (!src) - return NET_RX_SUCCESS; - - if (!dst) - return NET_RX_SUCCESS; - - if (!tvlv_handler->unicast_handler) - return NET_RX_SUCCESS; - - return tvlv_handler->unicast_handler(bat_priv, src, - dst, tvlv_value, - tvlv_value_len); - } - - return NET_RX_SUCCESS; -} - -/** - * batadv_tvlv_containers_process - parse the given tvlv buffer to call the - * appropriate handlers - * @bat_priv: the bat priv with all the soft interface information - * @ogm_source: flag indicating whether the tvlv is an ogm or a unicast packet - * @orig_node: orig node emitting the ogm packet - * @src: source mac address of the unicast packet - * @dst: destination mac address of the unicast packet - * @tvlv_value: tvlv content - * @tvlv_value_len: tvlv content length - * - * Return: success when processing an OGM or the return value of all called - * handler callbacks. - */ -int batadv_tvlv_containers_process(struct batadv_priv *bat_priv, - bool ogm_source, - struct batadv_orig_node *orig_node, - u8 *src, u8 *dst, - void *tvlv_value, u16 tvlv_value_len) -{ - struct batadv_tvlv_handler *tvlv_handler; - struct batadv_tvlv_hdr *tvlv_hdr; - u16 tvlv_value_cont_len; - u8 cifnotfound = BATADV_TVLV_HANDLER_OGM_CIFNOTFND; - int ret = NET_RX_SUCCESS; - - while (tvlv_value_len >= sizeof(*tvlv_hdr)) { - tvlv_hdr = tvlv_value; - tvlv_value_cont_len = ntohs(tvlv_hdr->len); - tvlv_value = tvlv_hdr + 1; - tvlv_value_len -= sizeof(*tvlv_hdr); - - if (tvlv_value_cont_len > tvlv_value_len) - break; - - tvlv_handler = batadv_tvlv_handler_get(bat_priv, - tvlv_hdr->type, - tvlv_hdr->version); - - ret |= batadv_tvlv_call_handler(bat_priv, tvlv_handler, - ogm_source, orig_node, - src, dst, tvlv_value, - tvlv_value_cont_len); - if (tvlv_handler) - batadv_tvlv_handler_put(tvlv_handler); - tvlv_value = (u8 *)tvlv_value + tvlv_value_cont_len; - tvlv_value_len -= tvlv_value_cont_len; - } - - if (!ogm_source) - return ret; - - rcu_read_lock(); - hlist_for_each_entry_rcu(tvlv_handler, - &bat_priv->tvlv.handler_list, list) { - if ((tvlv_handler->flags & BATADV_TVLV_HANDLER_OGM_CIFNOTFND) && - !(tvlv_handler->flags & BATADV_TVLV_HANDLER_OGM_CALLED)) - tvlv_handler->ogm_handler(bat_priv, orig_node, - cifnotfound, NULL, 0); - - tvlv_handler->flags &= ~BATADV_TVLV_HANDLER_OGM_CALLED; - } - rcu_read_unlock(); - - return NET_RX_SUCCESS; -} - -/** - * batadv_tvlv_ogm_receive - process an incoming ogm and call the appropriate - * handlers - * @bat_priv: the bat priv with all the soft interface information - * @batadv_ogm_packet: ogm packet containing the tvlv containers - * @orig_node: orig node emitting the ogm packet - */ -void batadv_tvlv_ogm_receive(struct batadv_priv *bat_priv, - struct batadv_ogm_packet *batadv_ogm_packet, - struct batadv_orig_node *orig_node) -{ - void *tvlv_value; - u16 tvlv_value_len; - - if (!batadv_ogm_packet) - return; - - tvlv_value_len = ntohs(batadv_ogm_packet->tvlv_len); - if (!tvlv_value_len) - return; - - tvlv_value = batadv_ogm_packet + 1; - - batadv_tvlv_containers_process(bat_priv, true, orig_node, NULL, NULL, - tvlv_value, tvlv_value_len); -} - -/** - * batadv_tvlv_handler_register - register tvlv handler based on the provided - * type and version (both need to match) for ogm tvlv payload and/or unicast - * payload - * @bat_priv: the bat priv with all the soft interface information - * @optr: ogm tvlv handler callback function. This function receives the orig - * node, flags and the tvlv content as argument to process. - * @uptr: unicast tvlv handler callback function. This function receives the - * source & destination of the unicast packet as well as the tvlv content - * to process. - * @type: tvlv handler type to be registered - * @version: tvlv handler version to be registered - * @flags: flags to enable or disable TVLV API behavior - */ -void batadv_tvlv_handler_register(struct batadv_priv *bat_priv, - void (*optr)(struct batadv_priv *bat_priv, - struct batadv_orig_node *orig, - u8 flags, - void *tvlv_value, - u16 tvlv_value_len), - int (*uptr)(struct batadv_priv *bat_priv, - u8 *src, u8 *dst, - void *tvlv_value, - u16 tvlv_value_len), - u8 type, u8 version, u8 flags) -{ - struct batadv_tvlv_handler *tvlv_handler; - - tvlv_handler = batadv_tvlv_handler_get(bat_priv, type, version); - if (tvlv_handler) { - batadv_tvlv_handler_put(tvlv_handler); - return; - } - - tvlv_handler = kzalloc(sizeof(*tvlv_handler), GFP_ATOMIC); - if (!tvlv_handler) - return; - - tvlv_handler->ogm_handler = optr; - tvlv_handler->unicast_handler = uptr; - tvlv_handler->type = type; - tvlv_handler->version = version; - tvlv_handler->flags = flags; - kref_init(&tvlv_handler->refcount); - INIT_HLIST_NODE(&tvlv_handler->list); - - spin_lock_bh(&bat_priv->tvlv.handler_list_lock); - hlist_add_head_rcu(&tvlv_handler->list, &bat_priv->tvlv.handler_list); - spin_unlock_bh(&bat_priv->tvlv.handler_list_lock); -} - -/** - * batadv_tvlv_handler_unregister - unregister tvlv handler based on the - * provided type and version (both need to match) - * @bat_priv: the bat priv with all the soft interface information - * @type: tvlv handler type to be unregistered - * @version: tvlv handler version to be unregistered - */ -void batadv_tvlv_handler_unregister(struct batadv_priv *bat_priv, - u8 type, u8 version) -{ - struct batadv_tvlv_handler *tvlv_handler; - - tvlv_handler = batadv_tvlv_handler_get(bat_priv, type, version); - if (!tvlv_handler) - return; - - batadv_tvlv_handler_put(tvlv_handler); - spin_lock_bh(&bat_priv->tvlv.handler_list_lock); - hlist_del_rcu(&tvlv_handler->list); - spin_unlock_bh(&bat_priv->tvlv.handler_list_lock); - batadv_tvlv_handler_put(tvlv_handler); -} - -/** - * batadv_tvlv_unicast_send - send a unicast packet with tvlv payload to the - * specified host - * @bat_priv: the bat priv with all the soft interface information - * @src: source mac address of the unicast packet - * @dst: destination mac address of the unicast packet - * @type: tvlv type - * @version: tvlv version - * @tvlv_value: tvlv content - * @tvlv_value_len: tvlv content length - */ -void batadv_tvlv_unicast_send(struct batadv_priv *bat_priv, u8 *src, - u8 *dst, u8 type, u8 version, - void *tvlv_value, u16 tvlv_value_len) -{ - struct batadv_unicast_tvlv_packet *unicast_tvlv_packet; - struct batadv_tvlv_hdr *tvlv_hdr; - struct batadv_orig_node *orig_node; - struct sk_buff *skb; - unsigned char *tvlv_buff; - unsigned int tvlv_len; - ssize_t hdr_len = sizeof(*unicast_tvlv_packet); - - orig_node = batadv_orig_hash_find(bat_priv, dst); - if (!orig_node) - return; - - tvlv_len = sizeof(*tvlv_hdr) + tvlv_value_len; - - skb = netdev_alloc_skb_ip_align(NULL, ETH_HLEN + hdr_len + tvlv_len); - if (!skb) - goto out; - - skb->priority = TC_PRIO_CONTROL; - skb_reserve(skb, ETH_HLEN); - tvlv_buff = skb_put(skb, sizeof(*unicast_tvlv_packet) + tvlv_len); - unicast_tvlv_packet = (struct batadv_unicast_tvlv_packet *)tvlv_buff; - unicast_tvlv_packet->packet_type = BATADV_UNICAST_TVLV; - unicast_tvlv_packet->version = BATADV_COMPAT_VERSION; - unicast_tvlv_packet->ttl = BATADV_TTL; - unicast_tvlv_packet->reserved = 0; - unicast_tvlv_packet->tvlv_len = htons(tvlv_len); - unicast_tvlv_packet->align = 0; - ether_addr_copy(unicast_tvlv_packet->src, src); - ether_addr_copy(unicast_tvlv_packet->dst, dst); - - tvlv_buff = (unsigned char *)(unicast_tvlv_packet + 1); - tvlv_hdr = (struct batadv_tvlv_hdr *)tvlv_buff; - tvlv_hdr->version = version; - tvlv_hdr->type = type; - tvlv_hdr->len = htons(tvlv_value_len); - tvlv_buff += sizeof(*tvlv_hdr); - memcpy(tvlv_buff, tvlv_value, tvlv_value_len); - - if (batadv_send_skb_to_orig(skb, orig_node, NULL) == NET_XMIT_DROP) - kfree_skb(skb); -out: - batadv_orig_node_put(orig_node); -} - -/** * batadv_get_vid - extract the VLAN identifier from skb if any * @skb: the buffer containing the packet * @header_len: length of the batman header preceding the ethernet header @@ -1284,36 +629,6 @@ bool batadv_vlan_ap_isola_get(struct batadv_priv *bat_priv, unsigned short vid) return ap_isolation_enabled; } -static int batadv_param_set_ra(const char *val, const struct kernel_param *kp) -{ - struct batadv_algo_ops *bat_algo_ops; - char *algo_name = (char *)val; - size_t name_len = strlen(algo_name); - - if (name_len > 0 && algo_name[name_len - 1] == '\n') - algo_name[name_len - 1] = '\0'; - - bat_algo_ops = batadv_algo_get(algo_name); - if (!bat_algo_ops) { - pr_err("Routing algorithm '%s' is not supported\n", algo_name); - return -EINVAL; - } - - return param_set_copystring(algo_name, kp); -} - -static const struct kernel_param_ops batadv_param_ops_ra = { - .set = batadv_param_set_ra, - .get = param_get_string, -}; - -static struct kparam_string batadv_param_string_ra = { - .maxlen = sizeof(batadv_routing_algo), - .string = batadv_routing_algo, -}; - -module_param_cb(routing_algo, &batadv_param_ops_ra, &batadv_param_string_ra, - 0644); module_init(batadv_init); module_exit(batadv_exit); |