#include <linux/atomic.h>
#include <linux/bug.h>
#include <linux/cache.h>
+#include <linux/errno.h>
+#include <linux/if_ether.h>
#include <linux/init.h>
#include <linux/jiffies.h>
+#include <linux/kernel.h>
+#include <linux/kref.h>
#include <linux/netdevice.h>
+#include <linux/netlink.h>
#include <linux/rculist.h>
#include <linux/rcupdate.h>
#include <linux/seq_file.h>
#include <linux/stddef.h>
#include <linux/types.h>
#include <linux/workqueue.h>
+#include <net/genetlink.h>
+#include <net/netlink.h>
+#include <uapi/linux/batman_adv.h>
#include "bat_algo.h"
#include "bat_v_elp.h"
#include "bat_v_ogm.h"
+#include "gateway_client.h"
+#include "gateway_common.h"
#include "hard-interface.h"
#include "hash.h"
+#include "log.h"
+#include "netlink.h"
#include "originator.h"
#include "packet.h"
+struct sk_buff;
+
static void batadv_v_iface_activate(struct batadv_hard_iface *hard_iface)
{
struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface);
batadv_v_elp_throughput_metric_update);
}
+#ifdef CONFIG_BATMAN_ADV_DEBUGFS
/**
* batadv_v_orig_print_neigh - print neighbors for the originator table
* @orig_node: the orig_node for which the neighbors are printed
if (batman_count == 0)
seq_puts(seq, "No batman nodes in range ...\n");
}
+#endif
+
+/**
+ * batadv_v_neigh_dump_neigh - Dump a neighbour into a message
+ * @msg: Netlink message to dump into
+ * @portid: Port making netlink request
+ * @seq: Sequence number of netlink message
+ * @hardif_neigh: Neighbour to dump
+ *
+ * Return: Error code, or 0 on success
+ */
+static int
+batadv_v_neigh_dump_neigh(struct sk_buff *msg, u32 portid, u32 seq,
+ struct batadv_hardif_neigh_node *hardif_neigh)
+{
+ void *hdr;
+ unsigned int last_seen_msecs;
+ u32 throughput;
+
+ last_seen_msecs = jiffies_to_msecs(jiffies - hardif_neigh->last_seen);
+ throughput = ewma_throughput_read(&hardif_neigh->bat_v.throughput);
+ throughput = throughput * 100;
+
+ hdr = genlmsg_put(msg, portid, seq, &batadv_netlink_family, NLM_F_MULTI,
+ BATADV_CMD_GET_NEIGHBORS);
+ if (!hdr)
+ return -ENOBUFS;
+
+ if (nla_put(msg, BATADV_ATTR_NEIGH_ADDRESS, ETH_ALEN,
+ hardif_neigh->addr) ||
+ nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX,
+ hardif_neigh->if_incoming->net_dev->ifindex) ||
+ nla_put_u32(msg, BATADV_ATTR_LAST_SEEN_MSECS,
+ last_seen_msecs) ||
+ nla_put_u32(msg, BATADV_ATTR_THROUGHPUT, throughput))
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+ nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+/**
+ * batadv_v_neigh_dump_hardif - Dump the neighbours of a hard interface into
+ * a message
+ * @msg: Netlink message to dump into
+ * @portid: Port making netlink request
+ * @seq: Sequence number of netlink message
+ * @bat_priv: The bat priv with all the soft interface information
+ * @hard_iface: The hard interface to be dumped
+ * @idx_s: Entries to be skipped
+ *
+ * This function assumes the caller holds rcu_read_lock().
+ *
+ * Return: Error code, or 0 on success
+ */
+static int
+batadv_v_neigh_dump_hardif(struct sk_buff *msg, u32 portid, u32 seq,
+ struct batadv_priv *bat_priv,
+ struct batadv_hard_iface *hard_iface,
+ int *idx_s)
+{
+ struct batadv_hardif_neigh_node *hardif_neigh;
+ int idx = 0;
+
+ hlist_for_each_entry_rcu(hardif_neigh,
+ &hard_iface->neigh_list, list) {
+ if (idx++ < *idx_s)
+ continue;
+
+ if (batadv_v_neigh_dump_neigh(msg, portid, seq, hardif_neigh)) {
+ *idx_s = idx - 1;
+ return -EMSGSIZE;
+ }
+ }
+
+ *idx_s = 0;
+ return 0;
+}
+
+/**
+ * batadv_v_neigh_dump - Dump the neighbours of a hard interface into a
+ * message
+ * @msg: Netlink message to dump into
+ * @cb: Control block containing additional options
+ * @bat_priv: The bat priv with all the soft interface information
+ * @single_hardif: Limit dumping to this hard interface
+ */
+static void
+batadv_v_neigh_dump(struct sk_buff *msg, struct netlink_callback *cb,
+ struct batadv_priv *bat_priv,
+ struct batadv_hard_iface *single_hardif)
+{
+ struct batadv_hard_iface *hard_iface;
+ int i_hardif = 0;
+ int i_hardif_s = cb->args[0];
+ int idx = cb->args[1];
+ int portid = NETLINK_CB(cb->skb).portid;
+
+ rcu_read_lock();
+ if (single_hardif) {
+ if (i_hardif_s == 0) {
+ if (batadv_v_neigh_dump_hardif(msg, portid,
+ cb->nlh->nlmsg_seq,
+ bat_priv, single_hardif,
+ &idx) == 0)
+ i_hardif++;
+ }
+ } else {
+ list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) {
+ if (hard_iface->soft_iface != bat_priv->soft_iface)
+ continue;
+
+ if (i_hardif++ < i_hardif_s)
+ continue;
+
+ if (batadv_v_neigh_dump_hardif(msg, portid,
+ cb->nlh->nlmsg_seq,
+ bat_priv, hard_iface,
+ &idx)) {
+ i_hardif--;
+ break;
+ }
+ }
+ }
+ rcu_read_unlock();
+
+ cb->args[0] = i_hardif;
+ cb->args[1] = idx;
+}
+
+#ifdef CONFIG_BATMAN_ADV_DEBUGFS
/**
* batadv_v_orig_print - print the originator table
* @bat_priv: the bat priv with all the soft interface information
if (batman_count == 0)
seq_puts(seq, "No batman nodes in range ...\n");
}
+#endif
+
+/**
+ * batadv_v_orig_dump_subentry - Dump an originator subentry into a
+ * message
+ * @msg: Netlink message to dump into
+ * @portid: Port making netlink request
+ * @seq: Sequence number of netlink message
+ * @bat_priv: The bat priv with all the soft interface information
+ * @if_outgoing: Limit dump to entries with this outgoing interface
+ * @orig_node: Originator to dump
+ * @neigh_node: Single hops neighbour
+ * @best: Is the best originator
+ *
+ * Return: Error code, or 0 on success
+ */
+static int
+batadv_v_orig_dump_subentry(struct sk_buff *msg, u32 portid, u32 seq,
+ struct batadv_priv *bat_priv,
+ struct batadv_hard_iface *if_outgoing,
+ struct batadv_orig_node *orig_node,
+ struct batadv_neigh_node *neigh_node,
+ bool best)
+{
+ struct batadv_neigh_ifinfo *n_ifinfo;
+ unsigned int last_seen_msecs;
+ u32 throughput;
+ void *hdr;
+
+ n_ifinfo = batadv_neigh_ifinfo_get(neigh_node, if_outgoing);
+ if (!n_ifinfo)
+ return 0;
+
+ throughput = n_ifinfo->bat_v.throughput * 100;
+
+ batadv_neigh_ifinfo_put(n_ifinfo);
+
+ last_seen_msecs = jiffies_to_msecs(jiffies - orig_node->last_seen);
+
+ if (if_outgoing != BATADV_IF_DEFAULT &&
+ if_outgoing != neigh_node->if_incoming)
+ return 0;
+
+ hdr = genlmsg_put(msg, portid, seq, &batadv_netlink_family, NLM_F_MULTI,
+ BATADV_CMD_GET_ORIGINATORS);
+ if (!hdr)
+ return -ENOBUFS;
+
+ if (nla_put(msg, BATADV_ATTR_ORIG_ADDRESS, ETH_ALEN, orig_node->orig) ||
+ nla_put(msg, BATADV_ATTR_NEIGH_ADDRESS, ETH_ALEN,
+ neigh_node->addr) ||
+ nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX,
+ neigh_node->if_incoming->net_dev->ifindex) ||
+ nla_put_u32(msg, BATADV_ATTR_THROUGHPUT, throughput) ||
+ nla_put_u32(msg, BATADV_ATTR_LAST_SEEN_MSECS,
+ last_seen_msecs))
+ goto nla_put_failure;
+
+ if (best && nla_put_flag(msg, BATADV_ATTR_FLAG_BEST))
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+ nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+/**
+ * batadv_v_orig_dump_entry - Dump an originator entry into a message
+ * @msg: Netlink message to dump into
+ * @portid: Port making netlink request
+ * @seq: Sequence number of netlink message
+ * @bat_priv: The bat priv with all the soft interface information
+ * @if_outgoing: Limit dump to entries with this outgoing interface
+ * @orig_node: Originator to dump
+ * @sub_s: Number of sub entries to skip
+ *
+ * This function assumes the caller holds rcu_read_lock().
+ *
+ * Return: Error code, or 0 on success
+ */
+static int
+batadv_v_orig_dump_entry(struct sk_buff *msg, u32 portid, u32 seq,
+ struct batadv_priv *bat_priv,
+ struct batadv_hard_iface *if_outgoing,
+ struct batadv_orig_node *orig_node, int *sub_s)
+{
+ struct batadv_neigh_node *neigh_node_best;
+ struct batadv_neigh_node *neigh_node;
+ int sub = 0;
+ bool best;
+
+ neigh_node_best = batadv_orig_router_get(orig_node, if_outgoing);
+ if (!neigh_node_best)
+ goto out;
+
+ hlist_for_each_entry_rcu(neigh_node, &orig_node->neigh_list, list) {
+ if (sub++ < *sub_s)
+ continue;
+
+ best = (neigh_node == neigh_node_best);
+
+ if (batadv_v_orig_dump_subentry(msg, portid, seq, bat_priv,
+ if_outgoing, orig_node,
+ neigh_node, best)) {
+ batadv_neigh_node_put(neigh_node_best);
+
+ *sub_s = sub - 1;
+ return -EMSGSIZE;
+ }
+ }
+
+ out:
+ if (neigh_node_best)
+ batadv_neigh_node_put(neigh_node_best);
+
+ *sub_s = 0;
+ return 0;
+}
+
+/**
+ * batadv_v_orig_dump_bucket - Dump an originator bucket into a
+ * message
+ * @msg: Netlink message to dump into
+ * @portid: Port making netlink request
+ * @seq: Sequence number of netlink message
+ * @bat_priv: The bat priv with all the soft interface information
+ * @if_outgoing: Limit dump to entries with this outgoing interface
+ * @head: Bucket to be dumped
+ * @idx_s: Number of entries to be skipped
+ * @sub: Number of sub entries to be skipped
+ *
+ * Return: Error code, or 0 on success
+ */
+static int
+batadv_v_orig_dump_bucket(struct sk_buff *msg, u32 portid, u32 seq,
+ struct batadv_priv *bat_priv,
+ struct batadv_hard_iface *if_outgoing,
+ struct hlist_head *head, int *idx_s, int *sub)
+{
+ struct batadv_orig_node *orig_node;
+ int idx = 0;
+
+ rcu_read_lock();
+ hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
+ if (idx++ < *idx_s)
+ continue;
+
+ if (batadv_v_orig_dump_entry(msg, portid, seq, bat_priv,
+ if_outgoing, orig_node, sub)) {
+ rcu_read_unlock();
+ *idx_s = idx - 1;
+ return -EMSGSIZE;
+ }
+ }
+ rcu_read_unlock();
+
+ *idx_s = 0;
+ *sub = 0;
+ return 0;
+}
+
+/**
+ * batadv_v_orig_dump - Dump the originators into a message
+ * @msg: Netlink message to dump into
+ * @cb: Control block containing additional options
+ * @bat_priv: The bat priv with all the soft interface information
+ * @if_outgoing: Limit dump to entries with this outgoing interface
+ */
+static void
+batadv_v_orig_dump(struct sk_buff *msg, struct netlink_callback *cb,
+ struct batadv_priv *bat_priv,
+ struct batadv_hard_iface *if_outgoing)
+{
+ struct batadv_hashtable *hash = bat_priv->orig_hash;
+ struct hlist_head *head;
+ int bucket = cb->args[0];
+ int idx = cb->args[1];
+ int sub = cb->args[2];
+ int portid = NETLINK_CB(cb->skb).portid;
+
+ while (bucket < hash->size) {
+ head = &hash->table[bucket];
+
+ if (batadv_v_orig_dump_bucket(msg, portid,
+ cb->nlh->nlmsg_seq,
+ bat_priv, if_outgoing, head, &idx,
+ &sub))
+ break;
+
+ bucket++;
+ }
+
+ cb->args[0] = bucket;
+ cb->args[1] = idx;
+ cb->args[2] = sub;
+}
static int batadv_v_neigh_cmp(struct batadv_neigh_node *neigh1,
struct batadv_hard_iface *if_outgoing1,
return ret;
}
+static ssize_t batadv_v_store_sel_class(struct batadv_priv *bat_priv,
+ char *buff, size_t count)
+{
+ u32 old_class, class;
+
+ if (!batadv_parse_throughput(bat_priv->soft_iface, buff,
+ "B.A.T.M.A.N. V GW selection class",
+ &class))
+ return -EINVAL;
+
+ old_class = atomic_read(&bat_priv->gw.sel_class);
+ atomic_set(&bat_priv->gw.sel_class, class);
+
+ if (old_class != class)
+ batadv_gw_reselect(bat_priv);
+
+ return count;
+}
+
+static ssize_t batadv_v_show_sel_class(struct batadv_priv *bat_priv, char *buff)
+{
+ u32 class = atomic_read(&bat_priv->gw.sel_class);
+
+ return sprintf(buff, "%u.%u MBit\n", class / 10, class % 10);
+}
+
+/**
+ * batadv_v_gw_throughput_get - retrieve the GW-bandwidth for a given GW
+ * @gw_node: the GW to retrieve the metric for
+ * @bw: the pointer where the metric will be stored. The metric is computed as
+ * the minimum between the GW advertised throughput and the path throughput to
+ * it in the mesh
+ *
+ * Return: 0 on success, -1 on failure
+ */
+static int batadv_v_gw_throughput_get(struct batadv_gw_node *gw_node, u32 *bw)
+{
+ struct batadv_neigh_ifinfo *router_ifinfo = NULL;
+ struct batadv_orig_node *orig_node;
+ struct batadv_neigh_node *router;
+ int ret = -1;
+
+ orig_node = gw_node->orig_node;
+ router = batadv_orig_router_get(orig_node, BATADV_IF_DEFAULT);
+ if (!router)
+ goto out;
+
+ router_ifinfo = batadv_neigh_ifinfo_get(router, BATADV_IF_DEFAULT);
+ if (!router_ifinfo)
+ goto out;
+
+ /* the GW metric is computed as the minimum between the path throughput
+ * to reach the GW itself and the advertised bandwidth.
+ * This gives us an approximation of the effective throughput that the
+ * client can expect via this particular GW node
+ */
+ *bw = router_ifinfo->bat_v.throughput;
+ *bw = min_t(u32, *bw, gw_node->bandwidth_down);
+
+ ret = 0;
+out:
+ if (router)
+ batadv_neigh_node_put(router);
+ if (router_ifinfo)
+ batadv_neigh_ifinfo_put(router_ifinfo);
+
+ return ret;
+}
+
+/**
+ * batadv_v_gw_get_best_gw_node - retrieve the best GW node
+ * @bat_priv: the bat priv with all the soft interface information
+ *
+ * Return: the GW node having the best GW-metric, NULL if no GW is known
+ */
+static struct batadv_gw_node *
+batadv_v_gw_get_best_gw_node(struct batadv_priv *bat_priv)
+{
+ struct batadv_gw_node *gw_node, *curr_gw = NULL;
+ u32 max_bw = 0, bw;
+
+ rcu_read_lock();
+ hlist_for_each_entry_rcu(gw_node, &bat_priv->gw.list, list) {
+ if (!kref_get_unless_zero(&gw_node->refcount))
+ continue;
+
+ if (batadv_v_gw_throughput_get(gw_node, &bw) < 0)
+ goto next;
+
+ if (curr_gw && (bw <= max_bw))
+ goto next;
+
+ if (curr_gw)
+ batadv_gw_node_put(curr_gw);
+
+ curr_gw = gw_node;
+ kref_get(&curr_gw->refcount);
+ max_bw = bw;
+
+next:
+ batadv_gw_node_put(gw_node);
+ }
+ rcu_read_unlock();
+
+ return curr_gw;
+}
+
+/**
+ * batadv_v_gw_is_eligible - check if a originator would be selected as GW
+ * @bat_priv: the bat priv with all the soft interface information
+ * @curr_gw_orig: originator representing the currently selected GW
+ * @orig_node: the originator representing the new candidate
+ *
+ * Return: true if orig_node can be selected as current GW, false otherwise
+ */
+static bool batadv_v_gw_is_eligible(struct batadv_priv *bat_priv,
+ struct batadv_orig_node *curr_gw_orig,
+ struct batadv_orig_node *orig_node)
+{
+ struct batadv_gw_node *curr_gw = NULL, *orig_gw = NULL;
+ u32 gw_throughput, orig_throughput, threshold;
+ bool ret = false;
+
+ threshold = atomic_read(&bat_priv->gw.sel_class);
+
+ curr_gw = batadv_gw_node_get(bat_priv, curr_gw_orig);
+ if (!curr_gw) {
+ ret = true;
+ goto out;
+ }
+
+ if (batadv_v_gw_throughput_get(curr_gw, &gw_throughput) < 0) {
+ ret = true;
+ goto out;
+ }
+
+ orig_gw = batadv_gw_node_get(bat_priv, orig_node);
+ if (!orig_node)
+ goto out;
+
+ if (batadv_v_gw_throughput_get(orig_gw, &orig_throughput) < 0)
+ goto out;
+
+ if (orig_throughput < gw_throughput)
+ goto out;
+
+ if ((orig_throughput - gw_throughput) < threshold)
+ goto out;
+
+ batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
+ "Restarting gateway selection: better gateway found (throughput curr: %u, throughput new: %u)\n",
+ gw_throughput, orig_throughput);
+
+ ret = true;
+out:
+ if (curr_gw)
+ batadv_gw_node_put(curr_gw);
+ if (orig_gw)
+ batadv_gw_node_put(orig_gw);
+
+ return ret;
+}
+
+#ifdef CONFIG_BATMAN_ADV_DEBUGFS
+/* fails if orig_node has no router */
+static int batadv_v_gw_write_buffer_text(struct batadv_priv *bat_priv,
+ struct seq_file *seq,
+ const struct batadv_gw_node *gw_node)
+{
+ struct batadv_gw_node *curr_gw;
+ struct batadv_neigh_node *router;
+ struct batadv_neigh_ifinfo *router_ifinfo = NULL;
+ int ret = -1;
+
+ router = batadv_orig_router_get(gw_node->orig_node, BATADV_IF_DEFAULT);
+ if (!router)
+ goto out;
+
+ router_ifinfo = batadv_neigh_ifinfo_get(router, BATADV_IF_DEFAULT);
+ if (!router_ifinfo)
+ goto out;
+
+ curr_gw = batadv_gw_get_selected_gw_node(bat_priv);
+
+ seq_printf(seq, "%s %pM (%9u.%1u) %pM [%10s]: %u.%u/%u.%u MBit\n",
+ (curr_gw == gw_node ? "=>" : " "),
+ gw_node->orig_node->orig,
+ router_ifinfo->bat_v.throughput / 10,
+ router_ifinfo->bat_v.throughput % 10, router->addr,
+ router->if_incoming->net_dev->name,
+ gw_node->bandwidth_down / 10,
+ gw_node->bandwidth_down % 10,
+ gw_node->bandwidth_up / 10,
+ gw_node->bandwidth_up % 10);
+ ret = seq_has_overflowed(seq) ? -1 : 0;
+
+ if (curr_gw)
+ batadv_gw_node_put(curr_gw);
+out:
+ if (router_ifinfo)
+ batadv_neigh_ifinfo_put(router_ifinfo);
+ if (router)
+ batadv_neigh_node_put(router);
+ return ret;
+}
+
+/**
+ * batadv_v_gw_print - print the gateway list
+ * @bat_priv: the bat priv with all the soft interface information
+ * @seq: gateway table seq_file struct
+ */
+static void batadv_v_gw_print(struct batadv_priv *bat_priv,
+ struct seq_file *seq)
+{
+ struct batadv_gw_node *gw_node;
+ int gw_count = 0;
+
+ seq_puts(seq,
+ " Gateway ( throughput) Nexthop [outgoingIF]: advertised uplink bandwidth\n");
+
+ rcu_read_lock();
+ hlist_for_each_entry_rcu(gw_node, &bat_priv->gw.list, list) {
+ /* fails if orig_node has no router */
+ if (batadv_v_gw_write_buffer_text(bat_priv, seq, gw_node) < 0)
+ continue;
+
+ gw_count++;
+ }
+ rcu_read_unlock();
+
+ if (gw_count == 0)
+ seq_puts(seq, "No gateways in range ...\n");
+}
+#endif
+
+/**
+ * batadv_v_gw_dump_entry - Dump a gateway into a message
+ * @msg: Netlink message to dump into
+ * @portid: Port making netlink request
+ * @seq: Sequence number of netlink message
+ * @bat_priv: The bat priv with all the soft interface information
+ * @gw_node: Gateway to be dumped
+ *
+ * Return: Error code, or 0 on success
+ */
+static int batadv_v_gw_dump_entry(struct sk_buff *msg, u32 portid, u32 seq,
+ struct batadv_priv *bat_priv,
+ struct batadv_gw_node *gw_node)
+{
+ struct batadv_neigh_ifinfo *router_ifinfo = NULL;
+ struct batadv_neigh_node *router;
+ struct batadv_gw_node *curr_gw;
+ int ret = -EINVAL;
+ void *hdr;
+
+ router = batadv_orig_router_get(gw_node->orig_node, BATADV_IF_DEFAULT);
+ if (!router)
+ goto out;
+
+ router_ifinfo = batadv_neigh_ifinfo_get(router, BATADV_IF_DEFAULT);
+ if (!router_ifinfo)
+ goto out;
+
+ curr_gw = batadv_gw_get_selected_gw_node(bat_priv);
+
+ hdr = genlmsg_put(msg, portid, seq, &batadv_netlink_family,
+ NLM_F_MULTI, BATADV_CMD_GET_GATEWAYS);
+ if (!hdr) {
+ ret = -ENOBUFS;
+ goto out;
+ }
+
+ ret = -EMSGSIZE;
+
+ if (curr_gw == gw_node) {
+ if (nla_put_flag(msg, BATADV_ATTR_FLAG_BEST)) {
+ genlmsg_cancel(msg, hdr);
+ goto out;
+ }
+ }
+
+ if (nla_put(msg, BATADV_ATTR_ORIG_ADDRESS, ETH_ALEN,
+ gw_node->orig_node->orig)) {
+ genlmsg_cancel(msg, hdr);
+ goto out;
+ }
+
+ if (nla_put_u32(msg, BATADV_ATTR_THROUGHPUT,
+ router_ifinfo->bat_v.throughput)) {
+ genlmsg_cancel(msg, hdr);
+ goto out;
+ }
+
+ if (nla_put(msg, BATADV_ATTR_ROUTER, ETH_ALEN, router->addr)) {
+ genlmsg_cancel(msg, hdr);
+ goto out;
+ }
+
+ if (nla_put_string(msg, BATADV_ATTR_HARD_IFNAME,
+ router->if_incoming->net_dev->name)) {
+ genlmsg_cancel(msg, hdr);
+ goto out;
+ }
+
+ if (nla_put_u32(msg, BATADV_ATTR_BANDWIDTH_DOWN,
+ gw_node->bandwidth_down)) {
+ genlmsg_cancel(msg, hdr);
+ goto out;
+ }
+
+ if (nla_put_u32(msg, BATADV_ATTR_BANDWIDTH_UP, gw_node->bandwidth_up)) {
+ genlmsg_cancel(msg, hdr);
+ goto out;
+ }
+
+ genlmsg_end(msg, hdr);
+ ret = 0;
+
+out:
+ if (router_ifinfo)
+ batadv_neigh_ifinfo_put(router_ifinfo);
+ if (router)
+ batadv_neigh_node_put(router);
+ return ret;
+}
+
+/**
+ * batadv_v_gw_dump - Dump gateways into a message
+ * @msg: Netlink message to dump into
+ * @cb: Control block containing additional options
+ * @bat_priv: The bat priv with all the soft interface information
+ */
+static void batadv_v_gw_dump(struct sk_buff *msg, struct netlink_callback *cb,
+ struct batadv_priv *bat_priv)
+{
+ int portid = NETLINK_CB(cb->skb).portid;
+ struct batadv_gw_node *gw_node;
+ int idx_skip = cb->args[0];
+ int idx = 0;
+
+ rcu_read_lock();
+ hlist_for_each_entry_rcu(gw_node, &bat_priv->gw.list, list) {
+ if (idx++ < idx_skip)
+ continue;
+
+ if (batadv_v_gw_dump_entry(msg, portid, cb->nlh->nlmsg_seq,
+ bat_priv, gw_node)) {
+ idx_skip = idx - 1;
+ goto unlock;
+ }
+ }
+
+ idx_skip = idx;
+unlock:
+ rcu_read_unlock();
+
+ cb->args[0] = idx_skip;
+}
+
static struct batadv_algo_ops batadv_batman_v __read_mostly = {
.name = "BATMAN_V",
.iface = {
.hardif_init = batadv_v_hardif_neigh_init,
.cmp = batadv_v_neigh_cmp,
.is_similar_or_better = batadv_v_neigh_is_sob,
+#ifdef CONFIG_BATMAN_ADV_DEBUGFS
.print = batadv_v_neigh_print,
+#endif
+ .dump = batadv_v_neigh_dump,
},
.orig = {
+#ifdef CONFIG_BATMAN_ADV_DEBUGFS
.print = batadv_v_orig_print,
+#endif
+ .dump = batadv_v_orig_dump,
+ },
+ .gw = {
+ .store_sel_class = batadv_v_store_sel_class,
+ .show_sel_class = batadv_v_show_sel_class,
+ .get_best_gw_node = batadv_v_gw_get_best_gw_node,
+ .is_eligible = batadv_v_gw_is_eligible,
+#ifdef CONFIG_BATMAN_ADV_DEBUGFS
+ .print = batadv_v_gw_print,
+#endif
+ .dump = batadv_v_gw_dump,
},
};
*/
int batadv_v_mesh_init(struct batadv_priv *bat_priv)
{
- return batadv_v_ogm_init(bat_priv);
+ int ret = 0;
+
+ ret = batadv_v_ogm_init(bat_priv);
+ if (ret < 0)
+ return ret;
+
+ /* set default throughput difference threshold to 5Mbps */
+ atomic_set(&bat_priv->gw.sel_class, 50);
+
+ return 0;
}
/**
projects / cascardo / linux.git / blobdiff