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When the packet length is greater than the IP expected length, the padding data at the end of the frame will be trimmed.

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This commit is contained in:
luwenpeng
2024-05-24 19:10:33 +08:00
parent 94fc1af6bd
commit 54385ed08b
6 changed files with 264 additions and 45 deletions
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8
src/ip_reassembly/test/gtest_ipv4_reassembly.cpp
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@@ -237,7 +237,7 @@ TEST(IPV4_REASSEMBLE, PADDING_ORDER)
0, 0, 0, 0, 0, 0); // ip6: nospace, overlap, many frag, invalid length, dup first frag, dup last frag
// check packet
// packet_print(new_pkt);
// packet_print_str(new_pkt);
EXPECT_TRUE(new_pkt->data_len == 14 /* ETH */ + 20 /* IPv4 */ + 20 /* TCP */ + 28 /* DATA */);
EXPECT_TRUE(new_pkt->data_len == sizeof(expect));
EXPECT_TRUE(memcmp(new_pkt->data_ptr, expect, new_pkt->data_len) == 0);
@@ -330,7 +330,7 @@ TEST(IPV4_REASSEMBLE, PADDING_UNORDER)
0, 0, 0, 0, 0, 0); // ip6: nospace, overlap, many frag, invalid length, dup first frag, dup last frag
// check packet
// packet_print(new_pkt);
// packet_print_str(new_pkt);
EXPECT_TRUE(new_pkt->data_len == 14 /* ETH */ + 20 /* IPv4 */ + 20 /* TCP */ + 28 /* DATA */);
EXPECT_TRUE(new_pkt->data_len == sizeof(expect));
EXPECT_TRUE(memcmp(new_pkt->data_ptr, expect, new_pkt->data_len) == 0);
@@ -485,7 +485,7 @@ TEST(IPV4_REASSEMBLE, DUP_FIRST_FRAG)
0, 0, 0, 0, 0, 0); // ip6: nospace, overlap, many frag, invalid length, dup first frag, dup last frag
// check packet
// packet_print(new_pkt);
// packet_print_str(new_pkt);
EXPECT_TRUE(new_pkt->data_len == 14 /* ETH */ + 20 /* IPv4 */ + 20 /* TCP */ + 28 /* DATA */);
EXPECT_TRUE(new_pkt->data_len == sizeof(expect));
EXPECT_TRUE(memcmp(new_pkt->data_ptr, expect, new_pkt->data_len) == 0);
@@ -589,7 +589,7 @@ TEST(IPV4_REASSEMBLE, DUP_LAST_FRAG)
0, 0, 0, 0, 0, 0); // ip6: nospace, overlap, many frag, invalid length, dup first frag, dup last frag
// check packet
// packet_print(new_pkt);
// packet_print_str(new_pkt);
EXPECT_TRUE(new_pkt->data_len == 14 /* ETH */ + 20 /* IPv4 */ + 20 /* TCP */ + 28 /* DATA */);
EXPECT_TRUE(new_pkt->data_len == sizeof(expect));
EXPECT_TRUE(memcmp(new_pkt->data_ptr, expect, new_pkt->data_len) == 0);