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Merge "Change tetheroffloadjni to tetheringutilsjni" am: 0af9d37eca am: d248c13bda

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Change-Id: I913f33213bf208ef7733871222e57a21f0d460e6
This commit is contained in:
Automerger Merge Worker
2020-01-07 09:25:49 +00:00
parent 2a55907ecf d248c13bda
commit e7294ecb17
2 changed files with 0 additions and 102 deletions
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7
core/java/android/net/NetworkUtils.java
View File

@@ -60,13 +60,6 @@ public class NetworkUtils {
*/
public static native void detachBPFFilter(FileDescriptor fd) throws SocketException;
/**
* Configures a socket for receiving ICMPv6 router solicitations and sending advertisements.
* @param fd the socket's {@link FileDescriptor}.
* @param ifIndex the interface index.
*/
public native static void setupRaSocket(FileDescriptor fd, int ifIndex) throws SocketException;
/**
* Binds the current process to the network designated by {@code netId}. All sockets created
* in the future (and not explicitly bound via a bound {@link SocketFactory} (see

95
core/jni/android_net_NetUtils.cpp
View File

@@ -24,9 +24,7 @@
#include <linux/tcp.h>
#include <net/if.h>
#include <netinet/ether.h>
#include <netinet/icmp6.h>
#include <netinet/ip.h>
#include <netinet/ip6.h>
#include <netinet/udp.h>
#include <android_runtime/AndroidRuntime.h>
@@ -102,98 +100,6 @@ static void android_net_utils_detachBPFFilter(JNIEnv *env, jobject clazz, jobjec
}
}
static void android_net_utils_setupRaSocket(JNIEnv *env, jobject clazz, jobject javaFd,
jint ifIndex)
{
static const int kLinkLocalHopLimit = 255;
int fd = jniGetFDFromFileDescriptor(env, javaFd);
// Set an ICMPv6 filter that only passes Router Solicitations.
struct icmp6_filter rs_only;
ICMP6_FILTER_SETBLOCKALL(&rs_only);
ICMP6_FILTER_SETPASS(ND_ROUTER_SOLICIT, &rs_only);
socklen_t len = sizeof(rs_only);
if (setsockopt(fd, IPPROTO_ICMPV6, ICMP6_FILTER, &rs_only, len) != 0) {
jniThrowExceptionFmt(env, "java/net/SocketException",
"setsockopt(ICMP6_FILTER): %s", strerror(errno));
return;
}
// Most/all of the rest of these options can be set via Java code, but
// because we're here on account of setting an icmp6_filter go ahead
// and do it all natively for now.
//
// TODO: Consider moving these out to Java.
// Set the multicast hoplimit to 255 (link-local only).
int hops = kLinkLocalHopLimit;
len = sizeof(hops);
if (setsockopt(fd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &hops, len) != 0) {
jniThrowExceptionFmt(env, "java/net/SocketException",
"setsockopt(IPV6_MULTICAST_HOPS): %s", strerror(errno));
return;
}
// Set the unicast hoplimit to 255 (link-local only).
hops = kLinkLocalHopLimit;
len = sizeof(hops);
if (setsockopt(fd, IPPROTO_IPV6, IPV6_UNICAST_HOPS, &hops, len) != 0) {
jniThrowExceptionFmt(env, "java/net/SocketException",
"setsockopt(IPV6_UNICAST_HOPS): %s", strerror(errno));
return;
}
// Explicitly disable multicast loopback.
int off = 0;
len = sizeof(off);
if (setsockopt(fd, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, &off, len) != 0) {
jniThrowExceptionFmt(env, "java/net/SocketException",
"setsockopt(IPV6_MULTICAST_LOOP): %s", strerror(errno));
return;
}
// Specify the IPv6 interface to use for outbound multicast.
len = sizeof(ifIndex);
if (setsockopt(fd, IPPROTO_IPV6, IPV6_MULTICAST_IF, &ifIndex, len) != 0) {
jniThrowExceptionFmt(env, "java/net/SocketException",
"setsockopt(IPV6_MULTICAST_IF): %s", strerror(errno));
return;
}
// Additional options to be considered:
// - IPV6_TCLASS
// - IPV6_RECVPKTINFO
// - IPV6_RECVHOPLIMIT
// Bind to [::].
const struct sockaddr_in6 sin6 = {
.sin6_family = AF_INET6,
.sin6_port = 0,
.sin6_flowinfo = 0,
.sin6_addr = IN6ADDR_ANY_INIT,
.sin6_scope_id = 0,
};
auto sa = reinterpret_cast<const struct sockaddr *>(&sin6);
len = sizeof(sin6);
if (bind(fd, sa, len) != 0) {
jniThrowExceptionFmt(env, "java/net/SocketException",
"bind(IN6ADDR_ANY): %s", strerror(errno));
return;
}
// Join the all-routers multicast group, ff02::2%index.
struct ipv6_mreq all_rtrs = {
.ipv6mr_multiaddr = {{{0xff,2,0,0,0,0,0,0,0,0,0,0,0,0,0,2}}},
.ipv6mr_interface = ifIndex,
};
len = sizeof(all_rtrs);
if (setsockopt(fd, IPPROTO_IPV6, IPV6_JOIN_GROUP, &all_rtrs, len) != 0) {
jniThrowExceptionFmt(env, "java/net/SocketException",
"setsockopt(IPV6_JOIN_GROUP): %s", strerror(errno));
return;
}
}
static jboolean android_net_utils_bindProcessToNetwork(JNIEnv *env, jobject thiz, jint netId)
{
@@ -370,7 +276,6 @@ static const JNINativeMethod gNetworkUtilMethods[] = {
{ "attachDropAllBPFFilter", "(Ljava/io/FileDescriptor;)V", (void*) android_net_utils_attachDropAllBPFFilter },
{ "detachBPFFilter", "(Ljava/io/FileDescriptor;)V", (void*) android_net_utils_detachBPFFilter },
{ "getTcpRepairWindow", "(Ljava/io/FileDescriptor;)Landroid/net/TcpRepairWindow;", (void*) android_net_utils_getTcpRepairWindow },
{ "setupRaSocket", "(Ljava/io/FileDescriptor;I)V", (void*) android_net_utils_setupRaSocket },
{ "resNetworkSend", "(I[BII)Ljava/io/FileDescriptor;", (void*) android_net_utils_resNetworkSend },
{ "resNetworkQuery", "(ILjava/lang/String;III)Ljava/io/FileDescriptor;", (void*) android_net_utils_resNetworkQuery },
{ "resNetworkResult", "(Ljava/io/FileDescriptor;)Landroid/net/DnsResolver$DnsResponse;", (void*) android_net_utils_resNetworkResult },