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Fixes for concurrency support

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Change-Id: Ia7251dc86184fff710234c70a8ad54a6b245809a
This commit is contained in:
Irfan Sheriff 2012-01-10 16:24:51 -08:00
parent f6fc420a79
commit 096e49c869
2 changed files with 51 additions and 38 deletions
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9
include/hardware_legacy/wifi.h
View file

@ -48,14 +48,7 @@ int is_wifi_driver_loaded();
*
* @return 0 on success, < 0 on failure.
*/
int wifi_start_supplicant();
/**
* Start supplicant for p2p operation.
*
* @return 0 on success, < 0 on failure.
*/
int wifi_start_p2p_supplicant();
int wifi_start_supplicant(int p2pSupported);
/**
* Stop supplicant.

80
wifi/wifi.c
View file

@ -99,10 +99,12 @@ static const char FIRMWARE_LOADER[] = WIFI_FIRMWARE_LOADER;
static const char DRIVER_PROP_NAME[] = "wlan.driver.status";
static const char SUPPLICANT_NAME[] = "wpa_supplicant";
static const char SUPP_PROP_NAME[] = "init.svc.wpa_supplicant";
static const char P2P_SUPPLICANT_NAME[] = "p2p_supplicant";
static const char P2P_PROP_NAME[] = "init.svc.p2p_supplicant";
static const char SUPP_CONFIG_TEMPLATE[]= "/system/etc/wifi/wpa_supplicant.conf";
static const char SUPP_CONFIG_FILE[] = "/data/misc/wifi/wpa_supplicant.conf";
static const char P2P_CONFIG_FILE[] = "/data/misc/wifi/p2p_supplicant.conf";
static const char CONTROL_IFACE_PATH[] = "/data/misc/wifi";
static const char CONTROL_IFACE_PATH[] = "/data/misc/wifi/sockets";
static const char MODULE_FILE[] = "/proc/modules";
static const char SUPP_ENTROPY_FILE[] = WIFI_ENTROPY_FILE;
@ -111,6 +113,11 @@ static unsigned char dummy_key[21] = { 0x02, 0x11, 0xbe, 0x33, 0x43, 0x35,
0x1c, 0xd3, 0xee, 0xff, 0xf1, 0xe2,
0xf3, 0xf4, 0xf5 };
/* Is either SUPPLICANT_NAME or P2P_SUPPLICANT_NAME */
static char supplicant_name[PROPERTY_VALUE_MAX];
/* Is either SUPP_PROP_NAME or P2P_PROP_NAME */
static char supplicant_prop_name[PROPERTY_KEY_MAX];
static int is_primary_interface(const char *ifname)
{
//Treat NULL as primary interface to allow control
@ -493,9 +500,8 @@ void wifi_wpa_ctrl_cleanup(void)
closedir(dir);
}
int wifi_start_supplicant_common(const char *config_file)
int wifi_start_supplicant(int p2p_supported)
{
char daemon_cmd[PROPERTY_VALUE_MAX];
char supp_status[PROPERTY_VALUE_MAX] = {'\0'};
int count = 200; /* wait at most 20 seconds for completion */
#ifdef HAVE_LIBC_SYSTEM_PROPERTIES
@ -503,14 +509,29 @@ int wifi_start_supplicant_common(const char *config_file)
unsigned serial = 0, i;
#endif
if (p2p_supported) {
strcpy(supplicant_name, P2P_SUPPLICANT_NAME);
strcpy(supplicant_prop_name, P2P_PROP_NAME);
/* Ensure p2p config file is created */
if (ensure_config_file_exists(P2P_CONFIG_FILE) < 0) {
ALOGE("Failed to create a p2p config file");
return -1;
}
} else {
strcpy(supplicant_name, SUPPLICANT_NAME);
strcpy(supplicant_prop_name, SUPP_PROP_NAME);
}
/* Check whether already running */
if (property_get(SUPP_PROP_NAME, supp_status, NULL)
if (property_get(supplicant_name, supp_status, NULL)
&& strcmp(supp_status, "running") == 0) {
return 0;
}
/* Before starting the daemon, make sure its config file exists */
if (ensure_config_file_exists(config_file) < 0) {
if (ensure_config_file_exists(SUPP_CONFIG_FILE) < 0) {
ALOGE("Wi-Fi will not be enabled");
return -1;
}
@ -535,21 +556,20 @@ int wifi_start_supplicant_common(const char *config_file)
* it starts in the stopped state and never manages to start
* running at all.
*/
pi = __system_property_find(SUPP_PROP_NAME);
pi = __system_property_find(supplicant_prop_name);
if (pi != NULL) {
serial = pi->serial;
}
#endif
property_get("wifi.interface", primary_iface, WIFI_TEST_INTERFACE);
snprintf(daemon_cmd, PROPERTY_VALUE_MAX, "%s:-i%s -c%s", SUPPLICANT_NAME, primary_iface,
config_file);
property_set("ctl.start", daemon_cmd);
property_set("ctl.start", supplicant_name);
sched_yield();
while (count-- > 0) {
#ifdef HAVE_LIBC_SYSTEM_PROPERTIES
if (pi == NULL) {
pi = __system_property_find(SUPP_PROP_NAME);
pi = __system_property_find(supplicant_prop_name);
}
if (pi != NULL) {
__system_property_read(pi, NULL, supp_status);
@ -561,7 +581,7 @@ int wifi_start_supplicant_common(const char *config_file)
}
}
#else
if (property_get(SUPP_PROP_NAME, supp_status, NULL)) {
if (property_get(supplicant_prop_name, supp_status, NULL)) {
if (strcmp(supp_status, "running") == 0)
return 0;
}
@ -571,32 +591,22 @@ int wifi_start_supplicant_common(const char *config_file)
return -1;
}
int wifi_start_supplicant()
{
return wifi_start_supplicant_common(SUPP_CONFIG_FILE);
}
int wifi_start_p2p_supplicant()
{
return wifi_start_supplicant_common(P2P_CONFIG_FILE);
}
int wifi_stop_supplicant()
{
char supp_status[PROPERTY_VALUE_MAX] = {'\0'};
int count = 50; /* wait at most 5 seconds for completion */
/* Check whether supplicant already stopped */
if (property_get(SUPP_PROP_NAME, supp_status, NULL)
if (property_get(supplicant_prop_name, supp_status, NULL)
&& strcmp(supp_status, "stopped") == 0) {
return 0;
}
property_set("ctl.stop", SUPPLICANT_NAME);
property_set("ctl.stop", supplicant_name);
sched_yield();
while (count-- > 0) {
if (property_get(SUPP_PROP_NAME, supp_status, NULL)) {
if (property_get(supplicant_prop_name, supp_status, NULL)) {
if (strcmp(supp_status, "stopped") == 0)
return 0;
}
@ -610,7 +620,7 @@ int wifi_connect_on_socket_path(int index, const char *path)
char supp_status[PROPERTY_VALUE_MAX] = {'\0'};
/* Make sure supplicant is running */
if (!property_get(SUPP_PROP_NAME, supp_status, NULL)
if (!property_get(supplicant_prop_name, supp_status, NULL)
|| strcmp(supp_status, "running") != 0) {
ALOGE("Supplicant not running, cannot connect");
return -1;
@ -705,8 +715,7 @@ int wifi_ctrl_recv(int index, char *reply, size_t *reply_len)
if (rfds[0].revents & POLLIN) {
return wpa_ctrl_recv(monitor_conn[index], reply, reply_len);
} else {
ALOGD("Received on exit socket, terminate");
return -1;
return -2;
}
return 0;
}
@ -728,6 +737,14 @@ int wifi_wait_on_socket(int index, char *buf, size_t buflen)
}
result = wifi_ctrl_recv(index, buf, &nread);
/* Terminate reception on exit socket */
if (result == -2) {
strncpy(buf, WPA_EVENT_TERMINATING " - connection closed", buflen-1);
buf[buflen-1] = '\0';
return strlen(buf);
}
if (result < 0) {
ALOGD("wifi_ctrl_recv failed: %s\n", strerror(errno));
strncpy(buf, WPA_EVENT_TERMINATING " - recv error", buflen-1);
@ -735,7 +752,6 @@ int wifi_wait_on_socket(int index, char *buf, size_t buflen)
return strlen(buf);
}
buf[nread] = '\0';
/* ALOGD("wait_for_event: result=%d nread=%d string=\"%s\"\n", result, nread, buf); */
/* Check for EOF on the socket */
if (result == 0 && nread == 0) {
/* Fabricate an event to pass up */
@ -760,6 +776,7 @@ int wifi_wait_on_socket(int index, char *buf, size_t buflen)
memmove(buf, match+1, nread+1);
}
}
return nread;
}
@ -800,10 +817,13 @@ void wifi_close_supplicant_connection(const char *ifname)
char supp_status[PROPERTY_VALUE_MAX] = {'\0'};
int count = 50; /* wait at most 5 seconds to ensure init has stopped stupplicant */
if (is_primary_interface(ifname)) {
wifi_close_sockets(PRIMARY);
} else {
/* p2p socket termination needs unblocking the monitor socket
* STA connection does not need it since supplicant gets shutdown
*/
write(exit_sockets[SECONDARY][0], "T", 1);
wifi_close_sockets(SECONDARY);
//closing p2p connection does not need a wait on
//supplicant stop
@ -811,7 +831,7 @@ void wifi_close_supplicant_connection(const char *ifname)
}
while (count-- > 0) {
if (property_get(SUPP_PROP_NAME, supp_status, NULL)) {
if (property_get(supplicant_prop_name, supp_status, NULL)) {
if (strcmp(supp_status, "stopped") == 0)
return;
}