test: add IP reassembly test case for pcap IO

6 files changed, 284 insertions, 1 deletions

diff --git a/infra/packet_io/CMakeLists.txt b/infra/packet_io/CMakeLists.txt
index 036318d..dd094f1 100644
--- a/infra/packet_io/CMakeLists.txt
+++ b/infra/packet_io/CMakeLists.txt
@@ -1,3 +1,5 @@
 add_library(packet_io pcap_io.c mars_io.c packet_io.c)
 target_include_directories(packet_io PUBLIC ${CMAKE_CURRENT_LIST_DIR})
-target_link_libraries(packet_io marsio pcap packet_manager ip_reassembly)
\ No newline at end of file
+target_link_libraries(packet_io marsio pcap packet_manager ip_reassembly)
+
+add_subdirectory(test)
\ No newline at end of file
diff --git a/infra/packet_io/mars_io.c b/infra/packet_io/mars_io.c
index 0056184..7dd2904 100644
--- a/infra/packet_io/mars_io.c
+++ b/infra/packet_io/mars_io.c
@@ -318,6 +318,8 @@ static void send_packet(struct mars_io *mars_io, struct packet *pkt, uint16_t th
     int len = packet_get_raw_len(pkt);
     struct packet_origin *origin = packet_get_origin(pkt);
 
+    // TODO check len vs MTU, if len > MTU, fragment it
+
     if (origin->type == ORIGIN_TYPE_MR)
     {
         mbuff = (marsio_buff_t *)origin->ctx;
diff --git a/infra/packet_io/test/CMakeLists.txt b/infra/packet_io/test/CMakeLists.txt
new file mode 100644
index 0000000..740dd40
--- /dev/null
+++ b/infra/packet_io/test/CMakeLists.txt
@@ -0,0 +1,8 @@
+add_executable(gtest_packet_io gtest_packet_io.cpp)
+target_link_libraries(gtest_packet_io packet_io gtest)
+
+include(GoogleTest)
+gtest_discover_tests(gtest_packet_io)
+
+file(COPY ./conf/ DESTINATION ./conf/)
+file(COPY ./pcap/ DESTINATION ./pcap/)
\ No newline at end of file
diff --git a/infra/packet_io/test/conf/pcap_io.toml b/infra/packet_io/test/conf/pcap_io.toml
new file mode 100644
index 0000000..602f778
--- /dev/null
+++ b/infra/packet_io/test/conf/pcap_io.toml
@@ -0,0 +1,17 @@
+[packet_io]
+    mode = "pcapfile"                      # pcapfile, pcaplist, marsio
+    app_symbol = "stellar"
+    dev_symbol = "nf_0_fw"
+    pcap_path = "./pcap/IPv4_frags_UDP.pcap"
+    thread_num = 1                         # range: [1, 256]
+    cpu_mask = [5, 6, 7, 8, 9, 10, 11, 12]
+    idle_yield_ms = 900                    # range: [0, 60000] (ms)
+
+    [packet_io.packet_pool]
+        capacity = 1024       # range: [1, 4294967295]
+
+    [packet_io.ip_reassembly]
+        fail_action = 1       # 0: bypass, 1: drop
+        timeout_ms = 1000     # range: [1, 60000] (ms)
+        frag_queue_num = 1024 # range: [1, 4294967295]
+        frag_queue_size = 64  # range: [2, 65535]
\ No newline at end of file
diff --git a/infra/packet_io/test/gtest_packet_io.cpp b/infra/packet_io/test/gtest_packet_io.cpp
new file mode 100644
index 0000000..215c9b3
--- /dev/null
+++ b/infra/packet_io/test/gtest_packet_io.cpp
@@ -0,0 +1,254 @@
+#include <gtest/gtest.h>
+
+#include "packet_io.h"
+#include "packet_dump.h"
+
+unsigned char expect[] = {
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+    0x68, 0x68, 0x68, 0x16, 0x3c, 0x1b, 0x01, 0x01, 0x1c, 0x37, 0x07, 0x35, 0x08, 0x0c, 0x74, 0x6d, 0x70, 0x2d, 0x69, 0x64, 0x65, 0x6e, 0x74, 0x69, 0x74, 0x79,
+    0x08, 0x04, 0x12, 0xc2, 0x99, 0x9e, 0x08, 0x03, 0x4b, 0x45, 0x59, 0x08, 0x11, 0x6b, 0x73, 0x6b, 0x2d, 0x31, 0x34, 0x33, 0x33, 0x39, 0x38, 0x30, 0x38, 0x37,
+    0x36, 0x33, 0x30, 0x36, 0x08, 0x07, 0x49, 0x44, 0x2d, 0x43, 0x45, 0x52, 0x54, 0x17, 0xfd, 0x01, 0x00, 0x05, 0x83, 0xb1, 0x1e, 0x32, 0x73, 0x3b, 0xb7, 0x39,
+    0xaa, 0x7f, 0x41, 0xbd, 0x42, 0x9b, 0x68, 0x97, 0xa3, 0xff, 0x13, 0x1a, 0xdf, 0xc1, 0x80, 0x95, 0x18, 0xfa, 0xcd, 0x42, 0x82, 0x4c, 0x23, 0x5a, 0xd0, 0x32,
+    0xe2, 0x55, 0xe6, 0x6d, 0x5c, 0xe3, 0xf6, 0x43, 0x04, 0x26, 0xc2, 0x3c, 0xc4, 0xbf, 0x6c, 0x4c, 0xd8, 0xc6, 0x0e, 0x22, 0xe3, 0xd3, 0xeb, 0xf9, 0xfa, 0x42,
+    0x71, 0x19, 0x28, 0xf6, 0x19, 0x39, 0x99, 0x3a, 0x69, 0xa2, 0x50, 0x32, 0x6b, 0xc0, 0x65, 0x12, 0x7c, 0xfc, 0x9e, 0x7f, 0xc2, 0xff, 0xe0, 0x2f, 0x30, 0x6d,
+    0xe6, 0xd6, 0xd2, 0x29, 0x65, 0xef, 0xe4, 0x22, 0xa7, 0x22, 0x91, 0x1b, 0x0b, 0xb5, 0x28, 0xb7, 0x91, 0x98, 0x1c, 0x55, 0x0d, 0xbb, 0x26, 0x04, 0x02, 0x2a,
+    0x6e, 0xd1, 0x86, 0xba, 0x3d, 0x5e, 0x5c, 0x47, 0x98, 0xff, 0x4e, 0x88, 0x35, 0xc4, 0x1f, 0xf6, 0x94, 0xc6, 0xd0, 0x2f, 0xa0, 0x31, 0x5e, 0x06, 0xa5, 0x44,
+    0x38, 0x26, 0x6c, 0x41, 0xfa, 0x83, 0x6a, 0x95, 0x9b, 0xd3, 0x83, 0x7c, 0xc0, 0x63, 0xe8, 0x23, 0x78, 0x18, 0xfe, 0xba, 0x7c, 0xff, 0xbc, 0x00, 0x2d, 0x05,
+    0x8b, 0x16, 0x1d, 0x50, 0xe0, 0xbd, 0xfd, 0x22, 0xc8, 0x9e, 0xcf, 0x0f, 0x27, 0xc3, 0xfc, 0xaa, 0x53, 0xf2, 0xa4, 0x99, 0x15, 0x1e, 0x1e, 0xc3, 0x95, 0xd0,
+    0xc9, 0x1c, 0xb2, 0x89, 0xf8, 0x08, 0x25, 0xd8, 0x13, 0xb7, 0x24, 0x32, 0xa4, 0x58, 0x4c, 0x08, 0x50, 0x59, 0xe7, 0xcd, 0x49, 0xe2, 0x4c, 0x79, 0x3e, 0x16,
+    0x6e, 0x23, 0xf0, 0x23, 0x6c, 0x8c, 0x96, 0x7c, 0x07, 0x79, 0x7e, 0x2b, 0x71, 0x7e, 0x32, 0x44, 0x27, 0x70, 0x68, 0xbe, 0xb1, 0xdb, 0xf7, 0x8f, 0x6c, 0xfa,
+    0x09, 0xbc, 0xaa, 0xf9, 0x01, 0x63, 0x04, 0x27, 0x82, 0x6d, 0x2c, 0x2b, 0xc5};
+
+TEST(PCAP_IO, IP_REASSEMBLY)
+{
+    struct packet *pkts[1];
+    int nr_pkts = 1;
+
+    uint16_t thr_idx = 0;
+    const char *toml_file = "./conf/pcap_io.toml";
+    struct packet_io *pkt_io = packet_io_new(toml_file);
+    EXPECT_TRUE(pkt_io != NULL);
+
+    EXPECT_TRUE(packet_io_init(pkt_io, thr_idx) == 0);
+    sleep(1);
+
+    EXPECT_TRUE(packet_io_recv(pkt_io, thr_idx, pkts, nr_pkts) == 0);
+    EXPECT_TRUE(packet_io_recv(pkt_io, thr_idx, pkts, nr_pkts) == 0);
+    EXPECT_TRUE(packet_io_recv(pkt_io, thr_idx, pkts, nr_pkts) == 0);
+    EXPECT_TRUE(packet_io_recv(pkt_io, thr_idx, pkts, nr_pkts) == 1);
+
+    packet_print(pkts[0]);
+    packet_dump_hex(pkts[0], STDOUT_FILENO);
+    packet_dump_pcap(pkts[0], "pcap_io_ip_reassembly.pcap");
+
+    int len = packet_get_raw_len(pkts[0]);
+    const char *data = packet_get_raw_data(pkts[0]);
+    EXPECT_TRUE(len == sizeof(expect));
+    EXPECT_TRUE(memcmp(data, expect, sizeof(expect)) == 0);
+
+    packet_io_drop(pkt_io, thr_idx, pkts, nr_pkts);
+    packet_io_polling(pkt_io, thr_idx);
+
+    packet_io_free(pkt_io);
+}
+
+int main(int argc, char **argv)
+{
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}
diff --git a/infra/packet_io/test/pcap/IPv4_frags_UDP.pcap b/infra/packet_io/test/pcap/IPv4_frags_UDP.pcap
new file mode 100644
index 0000000..e545694
--- /dev/null
+++ b/infra/packet_io/test/pcap/IPv4_frags_UDP.pcap