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netdev: Add netdev watch infrastructure

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This commit is contained in:
Denis Kenzior 2015-09-28 19:44:26 -05:00
parent b19a683c36
commit e1bdd7ce1e
2 changed files with 101 additions and 0 deletions
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88
src/netdev.c
View File

@ -39,9 +39,20 @@ struct netdev_data {
char ifname[IF_NAMESIZE];
};
struct netdev_watchlist_item {
uint32_t id;
netdev_watch_func_t added;
netdev_watch_func_t removed;
void *userdata;
netdev_destroy_func_t destroy;
};
static struct l_netlink *rtnl = NULL;
static struct l_hashmap *netdev_list = NULL;
static struct l_queue *netdev_watches = NULL;
static uint32_t netdev_next_watch_id = 0;
static void do_debug(const char *str, void *user_data)
{
const char *prefix = user_data;
@ -188,6 +199,79 @@ static void link_notify(uint16_t type, const void *data, uint32_t len,
}
}
static void netdev_watchlist_item_free(void *userdata)
{
struct netdev_watchlist_item *item = userdata;
if (item->destroy)
item->destroy(item->userdata);
l_free(item);
}
static bool netdev_watchlist_item_match(const void *a, const void *b)
{
const struct netdev_watchlist_item *item = a;
uint32_t id = L_PTR_TO_UINT(b);
return item->id == id;
}
uint32_t netdev_watch_add(netdev_watch_func_t added,
netdev_watch_func_t removed,
void *userdata, netdev_destroy_func_t destroy)
{
struct netdev_watchlist_item *item;
item = l_new(struct netdev_watchlist_item, 1);
item->id = ++netdev_next_watch_id;
item->added = added;
item->removed = removed;
item->userdata = userdata;
item->destroy = destroy;
l_queue_push_tail(netdev_watches, item);
return item->id;
}
bool netdev_watch_remove(uint32_t id)
{
struct netdev_watchlist_item *item;
item = l_queue_remove_if(netdev_watches, netdev_watchlist_item_match,
L_UINT_TO_PTR(id));
if (!item)
return false;
netdev_watchlist_item_free(item);
return true;
}
void __netdev_watch_call_added(struct netdev *netdev)
{
const struct l_queue_entry *e;
for (e = l_queue_get_entries(netdev_watches); e; e = e->next) {
struct netdev_watchlist_item *item = e->data;
if (item->added)
item->added(netdev, item->userdata);
}
}
void __netdev_watch_call_removed(struct netdev *netdev)
{
const struct l_queue_entry *e;
for (e = l_queue_get_entries(netdev_watches); e; e = e->next) {
struct netdev_watchlist_item *item = e->data;
if (item->removed)
item->removed(netdev, item->userdata);
}
}
static void netdev_destroy(void)
{
/*
@ -225,6 +309,8 @@ bool netdev_init(void)
goto destroy;
}
netdev_watches = l_queue_new();
return true;
destroy:
@ -242,5 +328,7 @@ bool netdev_exit(void)
netdev_destroy();
l_queue_destroy(netdev_watches, netdev_watchlist_item_free);
return true;
}

13
src/netdev.h
View File

@ -22,6 +22,11 @@
#include <stdbool.h>
struct netdev;
typedef void (*netdev_watch_func_t)(struct netdev *netdev, void *userdata);
typedef void (*netdev_destroy_func_t)(void *userdata);
typedef void (*netdev_command_func_t) (bool result, void *user_data);
enum netdev_state {
@ -36,5 +41,13 @@ void netdev_set_linkmode_and_operstate(uint32_t ifindex,
uint8_t linkmode, uint8_t operstate,
netdev_command_func_t cb, void *user_data);
uint32_t netdev_watch_add(netdev_watch_func_t added,
netdev_watch_func_t removed,
void *userdata, netdev_destroy_func_t destroy);
bool netdev_watch_remove(uint32_t id);
void __netdev_watch_call_added(struct netdev *netdev);
void __netdev_watch_call_removed(struct netdev *netdev);
bool netdev_init(void);
bool netdev_exit(void);