Add support for WiFi in the emulator
The way WiFi works in the emulator requires changes to the reference RIL
in setting up interfaces. The interface name and gateway provided by RIL
changes when the emulator indicates support for WiFi. This information
is used to set up default routes which is needed for internet
connectivity.
Exempt-From-Owner-Approval:
Change-Id: I5dface583519ac36d12d16315b059866baaf73a5
(cherry picked from commit 021f5783a6c3c2a9793e3ac46e9ba0c9a6607235)
(cherry picked from commit 4710ed193d827066d08b46d75ce6315a983c7402)
Signed-off-by: Roman Kiryanov <rkir@google.com>
diff --git a/reference-ril/reference-ril.c b/reference-ril/reference-ril.c
index 3ab7bee..1ba2508 100644
--- a/reference-ril/reference-ril.c
+++ b/reference-ril/reference-ril.c
@@ -50,7 +50,10 @@
#define MAX_AT_RESPONSE 0x1000
/* pathname returned from RIL_REQUEST_SETUP_DATA_CALL / RIL_REQUEST_SETUP_DEFAULT_PDP */
-#define PPP_TTY_PATH "eth0"
+// This is used if Wifi is not supported, plain old eth0
+#define PPP_TTY_PATH_ETH0 "eth0"
+// This is used if Wifi is supported to separate radio and wifi interface
+#define PPP_TTY_PATH_RADIO0 "radio0"
// Default MTU value
#define DEFAULT_MTU 1500
@@ -508,6 +511,13 @@
RIL_onRequestComplete(t, RIL_E_SUCCESS, NULL, 0);
}
+static bool hasWifi()
+{
+ char propValue[PROP_VALUE_MAX];
+ return __system_property_get("ro.kernel.qemu.wifi", propValue) != 0 &&
+ strcmp("1", propValue) == 0;
+}
+
static void requestOrSendDataCallList(RIL_Token *t)
{
ATResponse *p_response;
@@ -515,6 +525,8 @@
int err;
int n = 0;
char *out;
+ char propValue[PROP_VALUE_MAX];
+ bool has_wifi = hasWifi();
err = at_send_command_multiline ("AT+CGACT?", "+CGACT:", &p_response);
if (err != 0 || p_response->success == 0) {
@@ -620,9 +632,15 @@
if (err < 0)
goto error;
- int ifname_size = strlen(PPP_TTY_PATH) + 1;
- responses[i].ifname = alloca(ifname_size);
- strlcpy(responses[i].ifname, PPP_TTY_PATH, ifname_size);
+ if (has_wifi) {
+ int ifname_size = strlen(PPP_TTY_PATH_RADIO0) + 1;
+ responses[i].ifname = alloca(ifname_size);
+ strlcpy(responses[i].ifname, PPP_TTY_PATH_RADIO0, ifname_size);
+ } else {
+ int ifname_size = strlen(PPP_TTY_PATH_ETH0) + 1;
+ responses[i].ifname = alloca(ifname_size);
+ strlcpy(responses[i].ifname, PPP_TTY_PATH_ETH0, ifname_size);
+ }
err = at_tok_nextstr(&line, &out);
if (err < 0)
@@ -666,7 +684,10 @@
}
responses[i].dnses = dnslist;
- responses[i].gateways = "10.0.2.2 fe80::2";
+ /* There is only one gateway in the emulator. If WiFi is
+ * configured the interface visible to RIL will be behind a NAT
+ * where the gateway is different. */
+ responses[i].gateways = has_wifi ? "192.168.200.1" : "10.0.2.2";
responses[i].mtu = DEFAULT_MTU;
}
else {