| 1 | |
| 2 | #include <stdint.h> |
| 3 | #include <fcntl.h> |
| 4 | #include <sys/socket.h> |
| 5 | #include <netlink/genl/genl.h> |
| 6 | #include <netlink/genl/family.h> |
| 7 | #include <netlink/genl/ctrl.h> |
| 8 | #include <linux/rtnetlink.h> |
| 9 | #include <netpacket/packet.h> |
| 10 | #include <linux/filter.h> |
| 11 | #include <linux/errqueue.h> |
| 12 | |
| 13 | #include <linux/pkt_sched.h> |
| 14 | #include <netlink/object-api.h> |
| 15 | #include <netlink/netlink.h> |
| 16 | #include <netlink/socket.h> |
| 17 | #include <netlink/handlers.h> |
| 18 | |
| 19 | #include "wifi_hal.h" |
| 20 | #include "common.h" |
| 21 | #include "cpp_bindings.h" |
| 22 | |
| 23 | interface_info *getIfaceInfo(wifi_interface_handle handle) |
| 24 | { |
| 25 | return (interface_info *)handle; |
| 26 | } |
| 27 | |
| 28 | wifi_handle getWifiHandle(wifi_interface_handle handle) |
| 29 | { |
| 30 | return getIfaceInfo(handle)->handle; |
| 31 | } |
| 32 | |
| 33 | hal_info *getHalInfo(wifi_handle handle) |
| 34 | { |
| 35 | return (hal_info *)handle; |
| 36 | } |
| 37 | |
| 38 | hal_info *getHalInfo(wifi_interface_handle handle) |
| 39 | { |
| 40 | return getHalInfo(getWifiHandle(handle)); |
| 41 | } |
| 42 | |
| 43 | wifi_handle getWifiHandle(hal_info *info) |
| 44 | { |
| 45 | return (wifi_handle)info; |
| 46 | } |
| 47 | |
| 48 | wifi_interface_handle getIfaceHandle(interface_info *info) |
| 49 | { |
| 50 | return (wifi_interface_handle)info; |
| 51 | } |
| 52 | |
| 53 | wifi_error wifi_register_handler(wifi_handle handle, int cmd, nl_recvmsg_msg_cb_t func, void *arg) |
| 54 | { |
| 55 | hal_info *info = (hal_info *)handle; |
| 56 | |
| 57 | /* TODO: check for multiple handlers? */ |
| 58 | pthread_mutex_lock(&info->cb_lock); |
| 59 | |
| 60 | wifi_error result = WIFI_ERROR_OUT_OF_MEMORY; |
| 61 | |
| 62 | if (info->num_event_cb < info->alloc_event_cb) { |
| 63 | info->event_cb[info->num_event_cb].nl_cmd = cmd; |
| 64 | info->event_cb[info->num_event_cb].vendor_id = 0; |
| 65 | info->event_cb[info->num_event_cb].vendor_subcmd = 0; |
| 66 | info->event_cb[info->num_event_cb].cb_func = func; |
| 67 | info->event_cb[info->num_event_cb].cb_arg = arg; |
| 68 | /* |
| 69 | ALOGI("Successfully added event handler %p:%p for command %d at %d", |
| 70 | arg, func, cmd, info->num_event_cb);*/ |
| 71 | info->num_event_cb++; |
| 72 | result = WIFI_SUCCESS; |
| 73 | } |
| 74 | |
| 75 | pthread_mutex_unlock(&info->cb_lock); |
| 76 | return result; |
| 77 | } |
| 78 | |
| 79 | wifi_error wifi_register_vendor_handler(wifi_handle handle, |
| 80 | uint32_t id, int subcmd, nl_recvmsg_msg_cb_t func, void *arg) |
| 81 | { |
| 82 | hal_info *info = (hal_info *)handle; |
| 83 | |
| 84 | //ALOGD("GSCAN register handle wifi_register_vendor_handler %p", handle); |
| 85 | /* TODO: check for multiple handlers? */ |
| 86 | pthread_mutex_lock(&info->cb_lock); |
| 87 | //ALOGI("Added event handler %p", info); |
| 88 | |
| 89 | wifi_error result = WIFI_ERROR_OUT_OF_MEMORY; |
| 90 | |
| 91 | // ALOGD("register_vendor_handler: handle = %p", handle); |
| 92 | if (info->num_event_cb < info->alloc_event_cb) { |
| 93 | info->event_cb[info->num_event_cb].nl_cmd = NL80211_CMD_VENDOR; |
| 94 | info->event_cb[info->num_event_cb].vendor_id = id; |
| 95 | info->event_cb[info->num_event_cb].vendor_subcmd = subcmd; |
| 96 | info->event_cb[info->num_event_cb].cb_func = func; |
| 97 | info->event_cb[info->num_event_cb].cb_arg = arg; |
| 98 | /* |
| 99 | ALOGI("Added event handler %p:%p for vendor 0x%0x and subcmd 0x%0x at %d", |
| 100 | arg, func, id, subcmd, info->num_event_cb);*/ |
| 101 | info->num_event_cb++; |
| 102 | result = WIFI_SUCCESS; |
| 103 | } |
| 104 | |
| 105 | pthread_mutex_unlock(&info->cb_lock); |
| 106 | return result; |
| 107 | } |
| 108 | |
| 109 | void wifi_unregister_handler(wifi_handle handle, int cmd) |
| 110 | { |
| 111 | hal_info *info = (hal_info *)handle; |
| 112 | |
| 113 | if (cmd == NL80211_CMD_VENDOR) { |
| 114 | ALOGE("Must use wifi_unregister_vendor_handler to remove vendor handlers"); |
| 115 | return; |
| 116 | } |
| 117 | |
| 118 | pthread_mutex_lock(&info->cb_lock); |
| 119 | |
| 120 | for (int i = 0; i < info->num_event_cb; i++) { |
| 121 | if (info->event_cb[i].nl_cmd == cmd) { |
| 122 | /* |
| 123 | ALOGI("Successfully removed event handler %p:%p for cmd = 0x%0x from %d", |
| 124 | info->event_cb[i].cb_arg, info->event_cb[i].cb_func, cmd, i);*/ |
| 125 | |
| 126 | memmove(&info->event_cb[i], &info->event_cb[i+1], |
| 127 | (info->num_event_cb - i - 1) * sizeof(cb_info)); |
| 128 | info->num_event_cb--; |
| 129 | break; |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | pthread_mutex_unlock(&info->cb_lock); |
| 134 | } |
| 135 | |
| 136 | void wifi_unregister_vendor_handler(wifi_handle handle, uint32_t id, int subcmd) |
| 137 | { |
| 138 | hal_info *info = (hal_info *)handle; |
| 139 | |
| 140 | pthread_mutex_lock(&info->cb_lock); |
| 141 | |
| 142 | for (int i = 0; i < info->num_event_cb; i++) { |
| 143 | |
| 144 | if (info->event_cb[i].nl_cmd == NL80211_CMD_VENDOR |
| 145 | && info->event_cb[i].vendor_id == id |
| 146 | && info->event_cb[i].vendor_subcmd == subcmd) { |
| 147 | /* |
| 148 | ALOGI("Successfully removed event handler %p:%p for vendor 0x%0x, subcmd 0x%0x from %d", |
| 149 | info->event_cb[i].cb_arg, info->event_cb[i].cb_func, id, subcmd, i);*/ |
| 150 | memmove(&info->event_cb[i], &info->event_cb[i+1], |
| 151 | (info->num_event_cb - i - 1) * sizeof(cb_info)); |
| 152 | info->num_event_cb--; |
| 153 | break; |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | pthread_mutex_unlock(&info->cb_lock); |
| 158 | } |
| 159 | |
| 160 | |
| 161 | wifi_error wifi_register_cmd(wifi_handle handle, int id, WifiCommand *cmd) |
| 162 | { |
| 163 | hal_info *info = (hal_info *)handle; |
| 164 | |
| 165 | //ALOGD("registering command %d", id); |
| 166 | |
| 167 | wifi_error result = WIFI_ERROR_OUT_OF_MEMORY; |
| 168 | |
| 169 | if (info->num_cmd < info->alloc_cmd) { |
| 170 | info->cmd[info->num_cmd].id = id; |
| 171 | info->cmd[info->num_cmd].cmd = cmd; |
| 172 | //ALOGI("Successfully added command %d: %p at %d", id, cmd, info->num_cmd); |
| 173 | info->num_cmd++; |
| 174 | result = WIFI_SUCCESS; |
| 175 | } |
| 176 | |
| 177 | return result; |
| 178 | } |
| 179 | |
| 180 | WifiCommand *wifi_unregister_cmd(wifi_handle handle, int id) |
| 181 | { |
| 182 | hal_info *info = (hal_info *)handle; |
| 183 | |
| 184 | //ALOGD("un-registering command %d", id); |
| 185 | |
| 186 | WifiCommand *cmd = NULL; |
| 187 | |
| 188 | for (int i = 0; i < info->num_cmd; i++) { |
| 189 | if (info->cmd[i].id == id) { |
| 190 | cmd = info->cmd[i].cmd; |
| 191 | memmove(&info->cmd[i], &info->cmd[i+1], (info->num_cmd - i) * sizeof(cmd_info)); |
| 192 | info->num_cmd--; |
| 193 | //ALOGI("Successfully removed command %d: %p from %d", id, cmd, i); |
| 194 | break; |
| 195 | } |
| 196 | } |
| 197 | |
| 198 | return cmd; |
| 199 | } |
| 200 | |
| 201 | WifiCommand *wifi_get_cmd(wifi_handle handle, int id) |
| 202 | { |
| 203 | hal_info *info = (hal_info *)handle; |
| 204 | |
| 205 | WifiCommand *cmd = NULL; |
| 206 | |
| 207 | for (int i = 0; i < info->num_cmd; i++) { |
| 208 | if (info->cmd[i].id == id) { |
| 209 | cmd = info->cmd[i].cmd; |
| 210 | break; |
| 211 | } |
| 212 | } |
| 213 | |
| 214 | return cmd; |
| 215 | } |
| 216 | |
| 217 | void wifi_unregister_cmd(wifi_handle handle, WifiCommand *cmd) |
| 218 | { |
| 219 | hal_info *info = (hal_info *)handle; |
| 220 | |
| 221 | for (int i = 0; i < info->num_cmd; i++) { |
| 222 | if (info->cmd[i].cmd == cmd) { |
| 223 | memmove(&info->cmd[i], &info->cmd[i+1], (info->num_cmd - i) * sizeof(cmd_info)); |
| 224 | info->num_cmd--; |
| 225 | //ALOGI("Successfully removed command %d: %p from %d", id, cmd, i); |
| 226 | break; |
| 227 | } |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | wifi_error wifi_cancel_cmd(wifi_request_id id, wifi_interface_handle iface) |
| 232 | { |
| 233 | wifi_handle handle = getWifiHandle(iface); |
| 234 | |
| 235 | WifiCommand *cmd = wifi_unregister_cmd(handle, id); |
| 236 | //ALOGD("Cancel WifiCommand = %p", cmd); |
| 237 | if (cmd) { |
| 238 | cmd->cancel(); |
| 239 | cmd->releaseRef(); |
| 240 | return WIFI_SUCCESS; |
| 241 | } |
| 242 | |
| 243 | return WIFI_ERROR_INVALID_ARGS; |
| 244 | } |
| 245 | |
| 246 | void wifi_set_nan_cmd(wifi_handle handle, WifiCommand *cmd) |
| 247 | { |
| 248 | hal_info *info = (hal_info *)handle; |
| 249 | info->nanCmd = cmd; |
| 250 | } |
| 251 | |
| 252 | void wifi_reset_nan_cmd(wifi_handle handle) |
| 253 | { |
| 254 | hal_info *info = (hal_info *)handle; |
| 255 | info->nanCmd = NULL; |
| 256 | } |
| 257 | |
| 258 | WifiCommand *wifi_get_nan_cmd(wifi_handle handle) { |
| 259 | hal_info *info = (hal_info *)handle; |
| 260 | return info->nanCmd; |
| 261 | } |