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remote: track remote hosts as a separate data structure

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Will be used to track host info

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau
2021-07-06 19:14:36 +02:00
parent e9641c4657
commit 8be33b596b
4 changed files with 68 additions and 24 deletions
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69
remote.c
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@@ -50,7 +50,7 @@ interfaces_update_cb(struct vlist_tree *tree,
struct vlist_node *node_new,
struct vlist_node *node_old);
static int remote_node_cmp(const void *k1, const void *k2, void *ptr)
static int remote_host_cmp(const void *k1, const void *k2, void *ptr)
{
unsigned long v1 = (unsigned long) k1;
unsigned long v2 = (unsigned long) k2;
@@ -59,7 +59,8 @@ static int remote_node_cmp(const void *k1, const void *k2, void *ptr)
}
static VLIST_TREE(interfaces, avl_strcmp, interfaces_update_cb, true, true);
AVL_TREE(remote_nodes, remote_node_cmp, true, NULL);
LIST_HEAD(remote_nodes);
static AVL_TREE(remote_hosts, remote_host_cmp, false, NULL);
static const char *
interface_name(struct interface *iface)
@@ -183,42 +184,72 @@ interface_add_station(struct usteer_remote_node *node, struct blob_attr *data)
static void
remote_node_free(struct usteer_remote_node *node)
{
avl_delete(&remote_nodes, &node->avl);
struct usteer_remote_host *host = node->host;
list_del(&node->list);
list_del(&node->host_list);
usteer_sta_node_cleanup(&node->node);
free(node);
if (!list_empty(&host->nodes))
return;
avl_delete(&remote_hosts, &host->avl);
free(host);
}
static struct usteer_remote_host *
interface_get_host(const char *addr, unsigned long id)
{
struct usteer_remote_host *host;
host = avl_find_element(&remote_hosts, (void *)id, host, avl);
if (host)
goto out;
host = calloc(1, sizeof(*host));
host->avl.key = (void *)id;
INIT_LIST_HEAD(&host->nodes);
avl_insert(&remote_hosts, &host->avl);
out:
if (host->addr && strcmp(host->addr, addr) != 0)
return host;
free(host->addr);
host->addr = strdup(addr);
return host;
}
static struct usteer_remote_node *
interface_get_node(const char *addr, unsigned long id, const char *name)
interface_get_node(struct usteer_remote_host *host, const char *name)
{
struct usteer_remote_node *node;
int addr_len = strlen(addr);
int addr_len = strlen(host->addr);
char *buf;
node = avl_find_element(&remote_nodes, (void *) id, node, avl);
while (node && node->avl.key == (void *) id) {
list_for_each_entry(node, &host->nodes, host_list)
if (!strcmp(node->name, name))
return node;
node = avl_next_element(node, avl);
}
node = calloc_a(sizeof(*node), &buf, addr_len + 1 + strlen(name) + 1);
node->avl.key = (void *) id;
node->node.type = NODE_TYPE_REMOTE;
sprintf(buf, "%s#%s", addr, name);
sprintf(buf, "%s#%s", host->addr, name);
node->node.avl.key = buf;
node->name = buf + addr_len + 1;
node->host = host;
INIT_LIST_HEAD(&node->node.sta_info);
avl_insert(&remote_nodes, &node->avl);
list_add_tail(&node->list, &remote_nodes);
list_add_tail(&node->host_list, &host->nodes);
return node;
}
static void
interface_add_node(struct interface *iface, const char *addr, unsigned long id, struct blob_attr *data)
interface_add_node(struct usteer_remote_host *host, struct blob_attr *data)
{
struct usteer_remote_node *node;
struct apmsg_node msg;
@@ -230,14 +261,13 @@ interface_add_node(struct interface *iface, const char *addr, unsigned long id,
return;
}
node = interface_get_node(addr, id, msg.name);
node = interface_get_node(host, msg.name);
node->check = 0;
node->node.freq = msg.freq;
node->node.n_assoc = msg.n_assoc;
node->node.max_assoc = msg.max_assoc;
node->node.noise = msg.noise;
node->node.load = msg.load;
node->iface = iface;
snprintf(node->node.ssid, sizeof(node->node.ssid), "%s", msg.ssid);
usteer_node_set_blob(&node->node.rrm_nr, msg.rrm_nr);
usteer_node_set_blob(&node->node.node_info, msg.node_info);
@@ -249,6 +279,7 @@ interface_add_node(struct interface *iface, const char *addr, unsigned long id,
static void
interface_recv_msg(struct interface *iface, struct in_addr *addr, void *buf, int len)
{
struct usteer_remote_host *host;
char addr_str[INET_ADDRSTRLEN];
struct blob_attr *data = buf;
struct apmsg msg;
@@ -273,8 +304,10 @@ interface_recv_msg(struct interface *iface, struct in_addr *addr, void *buf, int
inet_ntop(AF_INET, addr, addr_str, sizeof(addr_str));
host = interface_get_host(addr_str, msg.id);
blob_for_each_attr(cur, msg.nodes, rem)
interface_add_node(iface, addr_str, msg.id, cur);
interface_add_node(host, cur);
}
static struct interface *
@@ -447,7 +480,7 @@ usteer_check_timeout(void)
struct usteer_remote_node *node, *tmp;
int timeout = config.remote_node_timeout / config.remote_update_interval;
avl_for_each_element_safe(&remote_nodes, node, avl, tmp) {
list_for_each_entry_safe(node, tmp, &remote_nodes, list) {
if (node->check++ > timeout)
remote_node_free(node);
}