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#include <stdint.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/family.h>
#include <netlink/genl/ctrl.h>
#include <linux/rtnetlink.h>
#include <netpacket/packet.h>
#include <linux/filter.h>
#include <linux/errqueue.h>
#include <linux/pkt_sched.h>
#include <netlink/object-api.h>
#include <netlink/netlink.h>
#include <netlink/socket.h>
#include <netlink/handlers.h>
#include "wifi_hal.h"
#include "common.h"
#include "cpp_bindings.h"
interface_info *getIfaceInfo(wifi_interface_handle handle)
{
return (interface_info *)handle;
}
wifi_handle getWifiHandle(wifi_interface_handle handle)
{
return getIfaceInfo(handle)->handle;
}
hal_info *getHalInfo(wifi_handle handle)
{
return (hal_info *)handle;
}
hal_info *getHalInfo(wifi_interface_handle handle)
{
return getHalInfo(getWifiHandle(handle));
}
wifi_handle getWifiHandle(hal_info *info)
{
return (wifi_handle)info;
}
wifi_interface_handle getIfaceHandle(interface_info *info)
{
return (wifi_interface_handle)info;
}
wifi_error wifi_register_handler(wifi_handle handle, int cmd, nl_recvmsg_msg_cb_t func, void *arg)
{
hal_info *info = (hal_info *)handle;
/* TODO: check for multiple handlers? */
pthread_mutex_lock(&info->cb_lock);
wifi_error result = WIFI_ERROR_OUT_OF_MEMORY;
if (info->num_event_cb < info->alloc_event_cb) {
info->event_cb[info->num_event_cb].nl_cmd = cmd;
info->event_cb[info->num_event_cb].vendor_id = 0;
info->event_cb[info->num_event_cb].vendor_subcmd = 0;
info->event_cb[info->num_event_cb].cb_func = func;
info->event_cb[info->num_event_cb].cb_arg = arg;
ALOGV("Successfully added event handler %p:%p for command %d at %d",
arg, func, cmd, info->num_event_cb);
info->num_event_cb++;
result = WIFI_SUCCESS;
}
pthread_mutex_unlock(&info->cb_lock);
return result;
}
wifi_error wifi_register_vendor_handler(wifi_handle handle,
uint32_t id, int subcmd, nl_recvmsg_msg_cb_t func, void *arg)
{
hal_info *info = (hal_info *)handle;
/* TODO: check for multiple handlers? */
pthread_mutex_lock(&info->cb_lock);
wifi_error result = WIFI_ERROR_OUT_OF_MEMORY;
if (info->num_event_cb < info->alloc_event_cb) {
info->event_cb[info->num_event_cb].nl_cmd = NL80211_CMD_VENDOR;
info->event_cb[info->num_event_cb].vendor_id = id;
info->event_cb[info->num_event_cb].vendor_subcmd = subcmd;
info->event_cb[info->num_event_cb].cb_func = func;
info->event_cb[info->num_event_cb].cb_arg = arg;
ALOGV("Added event handler %p:%p for vendor 0x%0x and subcmd 0x%0x at %d",
arg, func, id, subcmd, info->num_event_cb);
info->num_event_cb++;
result = WIFI_SUCCESS;
}
pthread_mutex_unlock(&info->cb_lock);
return result;
}
void wifi_unregister_handler(wifi_handle handle, int cmd)
{
hal_info *info = (hal_info *)handle;
if (cmd == NL80211_CMD_VENDOR) {
ALOGE("Must use wifi_unregister_vendor_handler to remove vendor handlers");
return;
}
pthread_mutex_lock(&info->cb_lock);
for (int i = 0; i < info->num_event_cb; i++) {
if (info->event_cb[i].nl_cmd == cmd) {
ALOGV("Successfully removed event handler %p:%p for cmd = 0x%0x from %d",
info->event_cb[i].cb_arg, info->event_cb[i].cb_func, cmd, i);
memmove(&info->event_cb[i], &info->event_cb[i+1],
(info->num_event_cb - i - 1) * sizeof(cb_info));
info->num_event_cb--;
break;
}
}
pthread_mutex_unlock(&info->cb_lock);
}
void wifi_unregister_vendor_handler(wifi_handle handle, uint32_t id, int subcmd)
{
hal_info *info = (hal_info *)handle;
pthread_mutex_lock(&info->cb_lock);
for (int i = 0; i < info->num_event_cb; i++) {
if (info->event_cb[i].nl_cmd == NL80211_CMD_VENDOR
&& info->event_cb[i].vendor_id == id
&& info->event_cb[i].vendor_subcmd == subcmd) {
ALOGV("Successfully removed event handler %p:%p for vendor 0x%0x, subcmd 0x%0x from %d",
info->event_cb[i].cb_arg, info->event_cb[i].cb_func, id, subcmd, i);
memmove(&info->event_cb[i], &info->event_cb[i+1],
(info->num_event_cb - i - 1) * sizeof(cb_info));
info->num_event_cb--;
break;
}
}
pthread_mutex_unlock(&info->cb_lock);
}
wifi_error wifi_register_cmd(wifi_handle handle, int id, WifiCommand *cmd)
{
hal_info *info = (hal_info *)handle;
ALOGV("registering command %d", id);
wifi_error result = WIFI_ERROR_OUT_OF_MEMORY;
if (info->num_cmd < info->alloc_cmd) {
info->cmd[info->num_cmd].id = id;
info->cmd[info->num_cmd].cmd = cmd;
ALOGV("Successfully added command %d: %p at %d", id, cmd, info->num_cmd);
info->num_cmd++;
result = WIFI_SUCCESS;
}
return result;
}
WifiCommand *wifi_unregister_cmd(wifi_handle handle, int id)
{
hal_info *info = (hal_info *)handle;
ALOGV("un-registering command %d", id);
WifiCommand *cmd = NULL;
for (int i = 0; i < info->num_cmd; i++) {
if (info->cmd[i].id == id) {
cmd = info->cmd[i].cmd;
memmove(&info->cmd[i], &info->cmd[i+1], (info->num_cmd - i - 1) * sizeof(cmd_info));
info->num_cmd--;
ALOGV("Successfully removed command %d: %p from %d", id, cmd, i);
break;
}
}
return cmd;
}
WifiCommand *wifi_get_cmd(wifi_handle handle, int id)
{
hal_info *info = (hal_info *)handle;
WifiCommand *cmd = NULL;
for (int i = 0; i < info->num_cmd; i++) {
if (info->cmd[i].id == id) {
cmd = info->cmd[i].cmd;
break;
}
}
return cmd;
}
void wifi_unregister_cmd(wifi_handle handle, WifiCommand *cmd)
{
hal_info *info = (hal_info *)handle;
for (int i = 0; i < info->num_cmd; i++) {
if (info->cmd[i].cmd == cmd) {
int id = info->cmd[i].id;
memmove(&info->cmd[i], &info->cmd[i+1], (info->num_cmd - i - 1) * sizeof(cmd_info));
info->num_cmd--;
ALOGV("Successfully removed command %d: %p from %d", id, cmd, i);
break;
}
}
}
wifi_error wifi_cancel_cmd(wifi_request_id id, wifi_interface_handle iface)
{
wifi_handle handle = getWifiHandle(iface);
WifiCommand *cmd = wifi_unregister_cmd(handle, id);
ALOGV("Cancel WifiCommand = %p", cmd);
if (cmd) {
cmd->cancel();
cmd->releaseRef();
return WIFI_SUCCESS;
}
return WIFI_ERROR_INVALID_ARGS;
}
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