modules/admin-full: rework luci-bwc/libiwinfo integration

[project/luci.git] / modules / admin-full / src / luci-bwc.c

diff --git a/modules/admin-full/src/luci-bwc.c b/modules/admin-full/src/luci-bwc.c
index 1a4f510..05e4667 100644 (file)
--- a/modules/admin-full/src/luci-bwc.c
+++ b/modules/admin-full/src/luci-bwc.c
@@ -32,6 +32,7 @@
 #include <arpa/inet.h>
 
 #include <dlfcn.h>
+#include <iwinfo.h>
 
 #define STEP_COUNT     60
 #define STEP_TIME      1
@@ -140,9 +141,7 @@ static void reset_countdown(int sig)
 static char *progname;
 static int prognamelen;
 
-static int (*iw_get_rate)(const char *, int *) = NULL;
-static int (*iw_get_rssi)(const char *, int *) = NULL;
-static int (*iw_get_noise)(const char *, int *) = NULL;
+static struct iwinfo_ops *backend = NULL;
 
 
 static int init_directory(char *path)
@@ -252,59 +251,45 @@ static void umap_file(struct file_map *m)
                close(m->fd);
 }
 
-static void * iwinfo_open(void)
+static void * iw_open(void)
 {
        return dlopen("/usr/lib/libiwinfo.so", RTLD_LAZY);
 }
 
-static int iwinfo_update(
+static int iw_update(
        void *iw, const char *ifname, uint16_t *rate, uint8_t *rssi, uint8_t *noise
 ) {
-       int (*probe)(const char *);
+       struct iwinfo_ops *(*probe)(const char *);
        int val;
 
-       if (!iw_get_rate)
+       if (!backend)
        {
-               if ((probe = dlsym(iw, "nl80211_probe")) != NULL && probe(ifname))
-               {
-                       iw_get_rate  = dlsym(iw, "nl80211_get_bitrate");
-                       iw_get_rssi  = dlsym(iw, "nl80211_get_signal");
-                       iw_get_noise = dlsym(iw, "nl80211_get_noise");
-               }
-               else if ((probe = dlsym(iw, "madwifi_probe")) != NULL && probe(ifname))
-               {
-                       iw_get_rate  = dlsym(iw, "madwifi_get_bitrate");
-                       iw_get_rssi  = dlsym(iw, "madwifi_get_signal");
-                       iw_get_noise = dlsym(iw, "madwifi_get_noise");
-               }
-               else if ((probe = dlsym(iw, "wl_probe")) != NULL && probe(ifname))
-               {
-                       iw_get_rate  = dlsym(iw, "wl_get_bitrate");
-                       iw_get_rssi  = dlsym(iw, "wl_get_signal");
-                       iw_get_noise = dlsym(iw, "wl_get_noise");
-               }
-               else
-               {
+               probe = dlsym(iw, "iwinfo_backend");
+
+               if (!probe)
+                       return 0;
+
+               backend = probe(ifname);
+
+               if (!backend)
                        return 0;
-               }
        }
 
-       *rate = (iw_get_rate && !iw_get_rate(ifname, &val)) ? val : 0;
-       *rssi = (iw_get_rssi && !iw_get_rssi(ifname, &val)) ? val : 0;
-       *noise = (iw_get_noise && !iw_get_noise(ifname, &val)) ? val : 0;
+       *rate = (backend->bitrate && !backend->bitrate(ifname, &val)) ? val : 0;
+       *rssi = (backend->signal && !backend->signal(ifname, &val)) ? val : 0;
+       *noise = (backend->noise && !backend->noise(ifname, &val)) ? val : 0;
 
        return 1;
 }
 
-static void iwinfo_close(void *iw)
+static void iw_close(void *iw)
 {
-       void (*do_close)(void);
+       void (*finish)(void);
+
+       finish = dlsym(iw, "iwinfo_finish");
 
-       if ((do_close = dlsym(iw, "nl80211_close")) != NULL) do_close();
-       if ((do_close = dlsym(iw, "madwifi_close")) != NULL) do_close();
-       if ((do_close = dlsym(iw, "wl_close"))      != NULL) do_close();
-       if ((do_close = dlsym(iw, "wext_close"))    != NULL) do_close();
-       if ((do_close = dlsym(iw, "iwinfo_close"))  != NULL) do_close();
+       if (finish)
+               finish();
 
        dlclose(iw);
 }
@@ -479,7 +464,7 @@ static int run_daemon(void)
        }
 
        /* initialize iwinfo */
-       iw = iwinfo_open();
+       iw = iw_open();
 
        /* go */
        for (reset_countdown(0); countdown >= 0; countdown--)
@@ -509,19 +494,19 @@ static int run_daemon(void)
                {
                        for (i = 0; i < 5; i++)
                        {
-#define iwinfo_checkif(pattern) \
+#define iw_checkif(pattern) \
                                do {                                                      \
                                        snprintf(ifname, sizeof(ifname), pattern, i);         \
-                                       if (iwinfo_update(iw, ifname, &rate, &rssi, &noise))  \
+                                       if (iw_update(iw, ifname, &rate, &rssi, &noise))  \
                                        {                                                     \
                                                update_radiostat(ifname, rate, rssi, noise);      \
                                                continue;                                         \
                                        }                                                     \
                                } while(0)
 
-                               iwinfo_checkif("wlan%d");
-                               iwinfo_checkif("ath%d");
-                               iwinfo_checkif("wl%d");
+                               iw_checkif("wlan%d");
+                               iw_checkif("ath%d");
+                               iw_checkif("wl%d");
                        }
                }
 
@@ -574,7 +559,7 @@ static int run_daemon(void)
        unlink(PID_PATH);
 
        if (iw)
-               iwinfo_close(iw);
+               iw_close(iw);
 
        return 0;
 }