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authorGhanan Gowripalan <ghanan@google.com>2021-09-16 18:53:44 -0700
committergVisor bot <gvisor-bot@google.com>2021-09-16 18:56:08 -0700
commiteccd46e67c75e164ca0e700dddc61cc1556be8d2 (patch)
tree5cb64306ed339b4cbdd7e7907e29c36be1939f1d /test/syscalls/linux/packet_socket.cc
parent51b96514cd9397870b39506e3693017a355319dd (diff)
Rename packet_socket to packet_socket_dgram
...so that a later change can add a new packet_socket syscall test target that holds raw/dgram packet socket generic common tests. The current packet_socket syscall test target holds tests specific to dgram packet sockets. While I am here, remove the defines for the packet_socket_raw_test target as no code is guarded with `__linux__` in the target's sources. PiperOrigin-RevId: 397217761
Diffstat (limited to 'test/syscalls/linux/packet_socket.cc')
-rw-r--r--test/syscalls/linux/packet_socket.cc550
1 files changed, 0 insertions, 550 deletions
diff --git a/test/syscalls/linux/packet_socket.cc b/test/syscalls/linux/packet_socket.cc
deleted file mode 100644
index 9515a48f2..000000000
--- a/test/syscalls/linux/packet_socket.cc
+++ /dev/null
@@ -1,550 +0,0 @@
-// Copyright 2019 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include <arpa/inet.h>
-#include <ifaddrs.h>
-#include <net/ethernet.h>
-#include <net/if.h>
-#include <net/if_arp.h>
-#include <netinet/in.h>
-#include <netinet/ip.h>
-#include <netinet/udp.h>
-#include <netpacket/packet.h>
-#include <poll.h>
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include "gtest/gtest.h"
-#include "absl/base/internal/endian.h"
-#include "test/syscalls/linux/ip_socket_test_util.h"
-#include "test/syscalls/linux/unix_domain_socket_test_util.h"
-#include "test/util/capability_util.h"
-#include "test/util/cleanup.h"
-#include "test/util/file_descriptor.h"
-#include "test/util/socket_util.h"
-#include "test/util/test_util.h"
-
-// Some of these tests involve sending packets via AF_PACKET sockets and the
-// loopback interface. Because AF_PACKET circumvents so much of the networking
-// stack, Linux sees these packets as "martian", i.e. they claim to be to/from
-// localhost but don't have the usual associated data. Thus Linux drops them by
-// default. You can see where this happens by following the code at:
-//
-// - net/ipv4/ip_input.c:ip_rcv_finish, which calls
-// - net/ipv4/route.c:ip_route_input_noref, which calls
-// - net/ipv4/route.c:ip_route_input_slow, which finds and drops martian
-// packets.
-//
-// To tell Linux not to drop these packets, you need to tell it to accept our
-// funny packets (which are completely valid and correct, but lack associated
-// in-kernel data because we use AF_PACKET):
-//
-// echo 1 >> /proc/sys/net/ipv4/conf/lo/accept_local
-// echo 1 >> /proc/sys/net/ipv4/conf/lo/route_localnet
-//
-// These tests require CAP_NET_RAW to run.
-
-namespace gvisor {
-namespace testing {
-
-namespace {
-
-using ::testing::AnyOf;
-using ::testing::Eq;
-
-constexpr char kMessage[] = "soweoneul malhaebwa";
-constexpr in_port_t kPort = 0x409c; // htons(40000)
-
-//
-// "Cooked" tests. Cooked AF_PACKET sockets do not contain link layer
-// headers, and provide link layer destination/source information via a
-// returned struct sockaddr_ll.
-//
-
-// Send kMessage via sock to loopback
-void SendUDPMessage(int sock) {
- struct sockaddr_in dest = {};
- dest.sin_port = kPort;
- dest.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
- dest.sin_family = AF_INET;
- EXPECT_THAT(sendto(sock, kMessage, sizeof(kMessage), 0,
- reinterpret_cast<struct sockaddr*>(&dest), sizeof(dest)),
- SyscallSucceedsWithValue(sizeof(kMessage)));
-}
-
-// Send an IP packet and make sure ETH_P_<something else> doesn't pick it up.
-TEST(BasicCookedPacketTest, WrongType) {
- if (!ASSERT_NO_ERRNO_AND_VALUE(HavePacketSocketCapability())) {
- ASSERT_THAT(socket(AF_PACKET, SOCK_DGRAM, ETH_P_PUP),
- SyscallFailsWithErrno(EPERM));
- GTEST_SKIP();
- }
-
- FileDescriptor sock = ASSERT_NO_ERRNO_AND_VALUE(
- Socket(AF_PACKET, SOCK_DGRAM, htons(ETH_P_PUP)));
-
- // Let's use a simple IP payload: a UDP datagram.
- FileDescriptor udp_sock =
- ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0));
- SendUDPMessage(udp_sock.get());
-
- // Wait and make sure the socket never becomes readable.
- struct pollfd pfd = {};
- pfd.fd = sock.get();
- pfd.events = POLLIN;
- EXPECT_THAT(RetryEINTR(poll)(&pfd, 1, 1000), SyscallSucceedsWithValue(0));
-}
-
-// Tests for "cooked" (SOCK_DGRAM) packet(7) sockets.
-class CookedPacketTest : public ::testing::TestWithParam<int> {
- protected:
- // Creates a socket to be used in tests.
- void SetUp() override;
-
- // Closes the socket created by SetUp().
- void TearDown() override;
-
- // Gets the device index of the loopback device.
- int GetLoopbackIndex();
-
- // The socket used for both reading and writing.
- int socket_;
-};
-
-void CookedPacketTest::SetUp() {
- if (!ASSERT_NO_ERRNO_AND_VALUE(HavePacketSocketCapability())) {
- ASSERT_THAT(socket(AF_PACKET, SOCK_DGRAM, htons(GetParam())),
- SyscallFailsWithErrno(EPERM));
- GTEST_SKIP();
- }
-
- if (!IsRunningOnGvisor()) {
- FileDescriptor acceptLocal = ASSERT_NO_ERRNO_AND_VALUE(
- Open("/proc/sys/net/ipv4/conf/lo/accept_local", O_RDONLY));
- FileDescriptor routeLocalnet = ASSERT_NO_ERRNO_AND_VALUE(
- Open("/proc/sys/net/ipv4/conf/lo/route_localnet", O_RDONLY));
- char enabled;
- ASSERT_THAT(read(acceptLocal.get(), &enabled, 1),
- SyscallSucceedsWithValue(1));
- ASSERT_EQ(enabled, '1');
- ASSERT_THAT(read(routeLocalnet.get(), &enabled, 1),
- SyscallSucceedsWithValue(1));
- ASSERT_EQ(enabled, '1');
- }
-
- ASSERT_THAT(socket_ = socket(AF_PACKET, SOCK_DGRAM, htons(GetParam())),
- SyscallSucceeds());
-}
-
-void CookedPacketTest::TearDown() {
- // TearDown will be run even if we skip the test.
- if (ASSERT_NO_ERRNO_AND_VALUE(HavePacketSocketCapability())) {
- EXPECT_THAT(close(socket_), SyscallSucceeds());
- }
-}
-
-int CookedPacketTest::GetLoopbackIndex() {
- int v = EXPECT_NO_ERRNO_AND_VALUE(gvisor::testing::GetLoopbackIndex());
- EXPECT_NE(v, 0);
- return v;
-}
-
-// Receive and verify the message via packet socket on interface.
-void ReceiveMessage(int sock, int ifindex) {
- // Wait for the socket to become readable.
- struct pollfd pfd = {};
- pfd.fd = sock;
- pfd.events = POLLIN;
- EXPECT_THAT(RetryEINTR(poll)(&pfd, 1, 2000), SyscallSucceedsWithValue(1));
-
- // Read and verify the data.
- constexpr size_t packet_size =
- sizeof(struct iphdr) + sizeof(struct udphdr) + sizeof(kMessage);
- char buf[64];
- struct sockaddr_ll src = {};
- socklen_t src_len = sizeof(src);
- ASSERT_THAT(recvfrom(sock, buf, sizeof(buf), 0,
- reinterpret_cast<struct sockaddr*>(&src), &src_len),
- SyscallSucceedsWithValue(packet_size));
-
- // sockaddr_ll ends with an 8 byte physical address field, but ethernet
- // addresses only use 6 bytes. Linux used to return sizeof(sockaddr_ll)-2
- // here, but since commit b2cf86e1563e33a14a1c69b3e508d15dc12f804c returns
- // sizeof(sockaddr_ll).
- ASSERT_THAT(src_len, AnyOf(Eq(sizeof(src)), Eq(sizeof(src) - 2)));
-
- // Verify the source address.
- EXPECT_EQ(src.sll_family, AF_PACKET);
- EXPECT_EQ(src.sll_ifindex, ifindex);
- EXPECT_EQ(src.sll_halen, ETH_ALEN);
- EXPECT_EQ(ntohs(src.sll_protocol), ETH_P_IP);
- // This came from the loopback device, so the address is all 0s.
- for (int i = 0; i < src.sll_halen; i++) {
- EXPECT_EQ(src.sll_addr[i], 0);
- }
-
- // Verify the IP header. We memcpy to deal with pointer aligment.
- struct iphdr ip = {};
- memcpy(&ip, buf, sizeof(ip));
- EXPECT_EQ(ip.ihl, 5);
- EXPECT_EQ(ip.version, 4);
- EXPECT_EQ(ip.tot_len, htons(packet_size));
- EXPECT_EQ(ip.protocol, IPPROTO_UDP);
- EXPECT_EQ(ip.daddr, htonl(INADDR_LOOPBACK));
- EXPECT_EQ(ip.saddr, htonl(INADDR_LOOPBACK));
-
- // Verify the UDP header. We memcpy to deal with pointer aligment.
- struct udphdr udp = {};
- memcpy(&udp, buf + sizeof(iphdr), sizeof(udp));
- EXPECT_EQ(udp.dest, kPort);
- EXPECT_EQ(udp.len, htons(sizeof(udphdr) + sizeof(kMessage)));
-
- // Verify the payload.
- char* payload = reinterpret_cast<char*>(buf + sizeof(iphdr) + sizeof(udphdr));
- EXPECT_EQ(strncmp(payload, kMessage, sizeof(kMessage)), 0);
-}
-
-// Receive via a packet socket.
-TEST_P(CookedPacketTest, Receive) {
- // Let's use a simple IP payload: a UDP datagram.
- FileDescriptor udp_sock =
- ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0));
- SendUDPMessage(udp_sock.get());
-
- // Receive and verify the data.
- int loopback_index = GetLoopbackIndex();
- ReceiveMessage(socket_, loopback_index);
-}
-
-// Send via a packet socket.
-TEST_P(CookedPacketTest, Send) {
- // Let's send a UDP packet and receive it using a regular UDP socket.
- FileDescriptor udp_sock =
- ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0));
- struct sockaddr_in bind_addr = {};
- bind_addr.sin_family = AF_INET;
- bind_addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
- bind_addr.sin_port = kPort;
- ASSERT_THAT(
- bind(udp_sock.get(), reinterpret_cast<struct sockaddr*>(&bind_addr),
- sizeof(bind_addr)),
- SyscallSucceeds());
-
- // Set up the destination physical address.
- struct sockaddr_ll dest = {};
- dest.sll_family = AF_PACKET;
- dest.sll_halen = ETH_ALEN;
- dest.sll_ifindex = GetLoopbackIndex();
- dest.sll_protocol = htons(ETH_P_IP);
- // We're sending to the loopback device, so the address is all 0s.
- memset(dest.sll_addr, 0x00, ETH_ALEN);
-
- // Set up the IP header.
- struct iphdr iphdr = {0};
- iphdr.ihl = 5;
- iphdr.version = 4;
- iphdr.tos = 0;
- iphdr.tot_len =
- htons(sizeof(struct iphdr) + sizeof(struct udphdr) + sizeof(kMessage));
- // Get a pseudo-random ID. If we clash with an in-use ID the test will fail,
- // but we have no way of getting an ID we know to be good.
- srand(*reinterpret_cast<unsigned int*>(&iphdr));
- iphdr.id = rand();
- // Linux sets this bit ("do not fragment") for small packets.
- iphdr.frag_off = 1 << 6;
- iphdr.ttl = 64;
- iphdr.protocol = IPPROTO_UDP;
- iphdr.daddr = htonl(INADDR_LOOPBACK);
- iphdr.saddr = htonl(INADDR_LOOPBACK);
- iphdr.check = IPChecksum(iphdr);
-
- // Set up the UDP header.
- struct udphdr udphdr = {};
- udphdr.source = kPort;
- udphdr.dest = kPort;
- udphdr.len = htons(sizeof(udphdr) + sizeof(kMessage));
- udphdr.check = UDPChecksum(iphdr, udphdr, kMessage, sizeof(kMessage));
-
- // Copy both headers and the payload into our packet buffer.
- char send_buf[sizeof(iphdr) + sizeof(udphdr) + sizeof(kMessage)];
- memcpy(send_buf, &iphdr, sizeof(iphdr));
- memcpy(send_buf + sizeof(iphdr), &udphdr, sizeof(udphdr));
- memcpy(send_buf + sizeof(iphdr) + sizeof(udphdr), kMessage, sizeof(kMessage));
-
- // Send it.
- ASSERT_THAT(sendto(socket_, send_buf, sizeof(send_buf), 0,
- reinterpret_cast<struct sockaddr*>(&dest), sizeof(dest)),
- SyscallSucceedsWithValue(sizeof(send_buf)));
-
- // Wait for the packet to become available on both sockets.
- struct pollfd pfd = {};
- pfd.fd = udp_sock.get();
- pfd.events = POLLIN;
- ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, 5000), SyscallSucceedsWithValue(1));
- pfd.fd = socket_;
- pfd.events = POLLIN;
- ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, 5000), SyscallSucceedsWithValue(1));
-
- // Receive on the packet socket.
- char recv_buf[sizeof(send_buf)];
- ASSERT_THAT(recv(socket_, recv_buf, sizeof(recv_buf), 0),
- SyscallSucceedsWithValue(sizeof(recv_buf)));
- ASSERT_EQ(memcmp(recv_buf, send_buf, sizeof(send_buf)), 0);
-
- // Receive on the UDP socket.
- struct sockaddr_in src;
- socklen_t src_len = sizeof(src);
- ASSERT_THAT(recvfrom(udp_sock.get(), recv_buf, sizeof(recv_buf), MSG_DONTWAIT,
- reinterpret_cast<struct sockaddr*>(&src), &src_len),
- SyscallSucceedsWithValue(sizeof(kMessage)));
- // Check src and payload.
- EXPECT_EQ(strncmp(recv_buf, kMessage, sizeof(kMessage)), 0);
- EXPECT_EQ(src.sin_family, AF_INET);
- EXPECT_EQ(src.sin_port, kPort);
- EXPECT_EQ(src.sin_addr.s_addr, htonl(INADDR_LOOPBACK));
-}
-
-// Bind and receive via packet socket.
-TEST_P(CookedPacketTest, BindReceive) {
- struct sockaddr_ll bind_addr = {};
- bind_addr.sll_family = AF_PACKET;
- bind_addr.sll_protocol = htons(GetParam());
- bind_addr.sll_ifindex = GetLoopbackIndex();
-
- ASSERT_THAT(bind(socket_, reinterpret_cast<struct sockaddr*>(&bind_addr),
- sizeof(bind_addr)),
- SyscallSucceeds());
-
- // Let's use a simple IP payload: a UDP datagram.
- FileDescriptor udp_sock =
- ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0));
- SendUDPMessage(udp_sock.get());
-
- // Receive and verify the data.
- ReceiveMessage(socket_, bind_addr.sll_ifindex);
-}
-
-// Double Bind socket.
-TEST_P(CookedPacketTest, DoubleBindSucceeds) {
- struct sockaddr_ll bind_addr = {};
- bind_addr.sll_family = AF_PACKET;
- bind_addr.sll_protocol = htons(GetParam());
- bind_addr.sll_ifindex = GetLoopbackIndex();
-
- ASSERT_THAT(bind(socket_, reinterpret_cast<struct sockaddr*>(&bind_addr),
- sizeof(bind_addr)),
- SyscallSucceeds());
-
- // Binding socket again should fail.
- ASSERT_THAT(bind(socket_, reinterpret_cast<struct sockaddr*>(&bind_addr),
- sizeof(bind_addr)),
- // Linux 4.09 returns EINVAL here, but some time before 4.19 it
- // switched to EADDRINUSE.
- SyscallSucceeds());
-}
-
-// Bind and verify we do not receive data on interface which is not bound
-TEST_P(CookedPacketTest, BindDrop) {
- // Let's use a simple IP payload: a UDP datagram.
- FileDescriptor udp_sock =
- ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0));
-
- struct ifaddrs* if_addr_list = nullptr;
- auto cleanup = Cleanup([&if_addr_list]() { freeifaddrs(if_addr_list); });
-
- ASSERT_THAT(getifaddrs(&if_addr_list), SyscallSucceeds());
-
- // Get interface other than loopback.
- struct ifreq ifr = {};
- for (struct ifaddrs* i = if_addr_list; i; i = i->ifa_next) {
- if (strcmp(i->ifa_name, "lo") != 0) {
- strncpy(ifr.ifr_name, i->ifa_name, sizeof(ifr.ifr_name));
- break;
- }
- }
-
- // Skip if no interface is available other than loopback.
- if (strlen(ifr.ifr_name) == 0) {
- GTEST_SKIP();
- }
-
- // Get interface index.
- EXPECT_THAT(ioctl(socket_, SIOCGIFINDEX, &ifr), SyscallSucceeds());
- EXPECT_NE(ifr.ifr_ifindex, 0);
-
- // Bind to packet socket requires only family, protocol and ifindex.
- struct sockaddr_ll bind_addr = {};
- bind_addr.sll_family = AF_PACKET;
- bind_addr.sll_protocol = htons(GetParam());
- bind_addr.sll_ifindex = ifr.ifr_ifindex;
-
- ASSERT_THAT(bind(socket_, reinterpret_cast<struct sockaddr*>(&bind_addr),
- sizeof(bind_addr)),
- SyscallSucceeds());
-
- // Send to loopback interface.
- struct sockaddr_in dest = {};
- dest.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
- dest.sin_family = AF_INET;
- dest.sin_port = kPort;
- EXPECT_THAT(sendto(udp_sock.get(), kMessage, sizeof(kMessage), 0,
- reinterpret_cast<struct sockaddr*>(&dest), sizeof(dest)),
- SyscallSucceedsWithValue(sizeof(kMessage)));
-
- // Wait and make sure the socket never receives any data.
- struct pollfd pfd = {};
- pfd.fd = socket_;
- pfd.events = POLLIN;
- EXPECT_THAT(RetryEINTR(poll)(&pfd, 1, 1000), SyscallSucceedsWithValue(0));
-}
-
-// Verify that we receive outbound packets. This test requires at least one
-// non loopback interface so that we can actually capture an outgoing packet.
-TEST_P(CookedPacketTest, ReceiveOutbound) {
- // Only ETH_P_ALL sockets can receive outbound packets on linux.
- SKIP_IF(GetParam() != ETH_P_ALL);
-
- // Let's use a simple IP payload: a UDP datagram.
- FileDescriptor udp_sock =
- ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0));
-
- struct ifaddrs* if_addr_list = nullptr;
- auto cleanup = Cleanup([&if_addr_list]() { freeifaddrs(if_addr_list); });
-
- ASSERT_THAT(getifaddrs(&if_addr_list), SyscallSucceeds());
-
- // Get interface other than loopback.
- struct ifreq ifr = {};
- for (struct ifaddrs* i = if_addr_list; i; i = i->ifa_next) {
- if (strcmp(i->ifa_name, "lo") != 0) {
- strncpy(ifr.ifr_name, i->ifa_name, sizeof(ifr.ifr_name));
- break;
- }
- }
-
- // Skip if no interface is available other than loopback.
- if (strlen(ifr.ifr_name) == 0) {
- GTEST_SKIP();
- }
-
- // Get interface index and name.
- EXPECT_THAT(ioctl(socket_, SIOCGIFINDEX, &ifr), SyscallSucceeds());
- EXPECT_NE(ifr.ifr_ifindex, 0);
- int ifindex = ifr.ifr_ifindex;
-
- constexpr int kMACSize = 6;
- char hwaddr[kMACSize];
- // Get interface address.
- ASSERT_THAT(ioctl(socket_, SIOCGIFHWADDR, &ifr), SyscallSucceeds());
- ASSERT_THAT(ifr.ifr_hwaddr.sa_family,
- AnyOf(Eq(ARPHRD_NONE), Eq(ARPHRD_ETHER)));
- memcpy(hwaddr, ifr.ifr_hwaddr.sa_data, kMACSize);
-
- // Just send it to the google dns server 8.8.8.8. It's UDP we don't care
- // if it actually gets to the DNS Server we just want to see that we receive
- // it on our AF_PACKET socket.
- //
- // NOTE: We just want to pick an IP that is non-local to avoid having to
- // handle ARP as this should cause the UDP packet to be sent to the default
- // gateway configured for the system under test. Otherwise the only packet we
- // will see is the ARP query unless we picked an IP which will actually
- // resolve. The test is a bit brittle but this was the best compromise for
- // now.
- struct sockaddr_in dest = {};
- ASSERT_EQ(inet_pton(AF_INET, "8.8.8.8", &dest.sin_addr.s_addr), 1);
- dest.sin_family = AF_INET;
- dest.sin_port = kPort;
- EXPECT_THAT(sendto(udp_sock.get(), kMessage, sizeof(kMessage), 0,
- reinterpret_cast<struct sockaddr*>(&dest), sizeof(dest)),
- SyscallSucceedsWithValue(sizeof(kMessage)));
-
- // Wait and make sure the socket receives the data.
- struct pollfd pfd = {};
- pfd.fd = socket_;
- pfd.events = POLLIN;
- EXPECT_THAT(RetryEINTR(poll)(&pfd, 1, 1000), SyscallSucceedsWithValue(1));
-
- // Now read and check that the packet is the one we just sent.
- // Read and verify the data.
- constexpr size_t packet_size =
- sizeof(struct iphdr) + sizeof(struct udphdr) + sizeof(kMessage);
- char buf[64];
- struct sockaddr_ll src = {};
- socklen_t src_len = sizeof(src);
- ASSERT_THAT(recvfrom(socket_, buf, sizeof(buf), 0,
- reinterpret_cast<struct sockaddr*>(&src), &src_len),
- SyscallSucceedsWithValue(packet_size));
-
- // sockaddr_ll ends with an 8 byte physical address field, but ethernet
- // addresses only use 6 bytes. Linux used to return sizeof(sockaddr_ll)-2
- // here, but since commit b2cf86e1563e33a14a1c69b3e508d15dc12f804c returns
- // sizeof(sockaddr_ll).
- ASSERT_THAT(src_len, AnyOf(Eq(sizeof(src)), Eq(sizeof(src) - 2)));
-
- // Verify the source address.
- EXPECT_EQ(src.sll_family, AF_PACKET);
- EXPECT_EQ(src.sll_ifindex, ifindex);
- EXPECT_EQ(src.sll_halen, ETH_ALEN);
- EXPECT_EQ(ntohs(src.sll_protocol), ETH_P_IP);
- EXPECT_EQ(src.sll_pkttype, PACKET_OUTGOING);
- // Verify the link address of the interface matches that of the non
- // non loopback interface address we stored above.
- for (int i = 0; i < src.sll_halen; i++) {
- EXPECT_EQ(src.sll_addr[i], hwaddr[i]);
- }
-
- // Verify the IP header.
- struct iphdr ip = {};
- memcpy(&ip, buf, sizeof(ip));
- EXPECT_EQ(ip.ihl, 5);
- EXPECT_EQ(ip.version, 4);
- EXPECT_EQ(ip.tot_len, htons(packet_size));
- EXPECT_EQ(ip.protocol, IPPROTO_UDP);
- EXPECT_EQ(ip.daddr, dest.sin_addr.s_addr);
- EXPECT_NE(ip.saddr, htonl(INADDR_LOOPBACK));
-
- // Verify the UDP header.
- struct udphdr udp = {};
- memcpy(&udp, buf + sizeof(iphdr), sizeof(udp));
- EXPECT_EQ(udp.dest, kPort);
- EXPECT_EQ(udp.len, htons(sizeof(udphdr) + sizeof(kMessage)));
-
- // Verify the payload.
- char* payload = reinterpret_cast<char*>(buf + sizeof(iphdr) + sizeof(udphdr));
- EXPECT_EQ(strncmp(payload, kMessage, sizeof(kMessage)), 0);
-}
-
-// Bind with invalid address.
-TEST_P(CookedPacketTest, BindFail) {
- // Null address.
- ASSERT_THAT(
- bind(socket_, nullptr, sizeof(struct sockaddr)),
- AnyOf(SyscallFailsWithErrno(EFAULT), SyscallFailsWithErrno(EINVAL)));
-
- // Address of size 1.
- uint8_t addr = 0;
- ASSERT_THAT(
- bind(socket_, reinterpret_cast<struct sockaddr*>(&addr), sizeof(addr)),
- SyscallFailsWithErrno(EINVAL));
-}
-
-INSTANTIATE_TEST_SUITE_P(AllInetTests, CookedPacketTest,
- ::testing::Values(ETH_P_IP, ETH_P_ALL));
-
-} // namespace
-
-} // namespace testing
-} // namespace gvisor