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Starting to add ToS field checking to tft_packet_filter.

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master
Pedro Alvarez 6 years ago committed by Andre Puschmann
parent 40dd3e332c
commit 684ee2834e
2 changed files with 120 additions and 6 deletions
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9
srsue/src/stack/upper/tft_packet_filter.cc
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@ -74,6 +74,9 @@ tft_packet_filter_t::tft_packet_filter_t(const LIBLTE_MME_PACKET_FILTER_STRUCT&
break;
// Type of service/Traffic class
case TYPE_OF_SERVICE_TYPE:
active_filters = TYPE_OF_SERVICE_FLAG;
memcpy(&type_of_service, &tft.filter[idx], 1);
idx += 1;
break;
//Flow label
case FLOW_LABEL_TYPE:
@ -108,6 +111,11 @@ bool tft_packet_filter_t::match(const srslte::unique_byte_buffer_t& pdu)
return false;
}
// Check Type of Service/Traffic class
if (!match_type_of_service(pdu)) {
return false;
}
return true;
}
@ -165,6 +173,7 @@ bool tft_packet_filter_t::match_type_of_service(const srslte::unique_byte_buffer
{
struct iphdr* ip_pkt = (struct iphdr*)pdu->msg;
printf("tos %d %d\n", ip_pkt->tos, type_of_service);
if (ip_pkt->version == 4 && (active_filters & TYPE_OF_SERVICE_FLAG)) {
// Check match on IPv4 packet
if (ip_pkt->tos != type_of_service) {

117
srsue/test/upper/tft_test.cc
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@ -43,11 +43,12 @@ using namespace srslte;
// Protocol UDP
// Source port 2222, Destination port 2001
uint8_t ip_tst_message1[] = {
0x45, 0x00, 0x00, 0x5c, 0x22, 0xa1, 0x40, 0x00, 0x40, 0x11, 0x19, 0xee, 0x7f, 0x00, 0x00, 0x01, 0x7f, 0x00, 0x00,
0x01, 0x08, 0xae, 0x07, 0xd1, 0x00, 0x48, 0xfe, 0x5b, 0xd8, 0xf8, 0xd5, 0x4d, 0x9a, 0x9d, 0x26, 0xc7, 0xbd, 0xb4,
0xcc, 0x90, 0xe0, 0x21, 0x0b, 0x07, 0x74, 0x00, 0xcb, 0x2b, 0xf8, 0x09, 0xa1, 0x55, 0xa8, 0xf8, 0xfc, 0x93, 0xee,
0x4c, 0x67, 0x60, 0xb6, 0xa0, 0x1c, 0x79, 0x29, 0x45, 0x59, 0x96, 0xe6, 0x9b, 0x70, 0xc7, 0x34, 0xb0, 0x2f, 0xf5,
0x0e, 0x0f, 0xcb, 0x45, 0xf1, 0xae, 0x97, 0x46, 0x0c, 0xbe, 0x9f, 0xd7, 0xfa, 0xe5, 0xec, 0x99};
0x45, 0x04, 0x00, 0x5c, 0xb5, 0x8e, 0x40, 0x00, 0x40, 0x11, 0x86, 0xfb, 0x7f, 0x00, 0x00, 0x01, 0x7f, 0x00, 0x00,
0x02, 0x08, 0xae, 0x07, 0xd1, 0x00, 0x48, 0xfe, 0x5c, 0xaf, 0xed, 0x69, 0x5a, 0x77, 0x80, 0x6e, 0x2f, 0x5e, 0xf3,
0x76, 0x17, 0x05, 0xe4, 0x2b, 0xca, 0xb2, 0xd2, 0xcb, 0xa5, 0x58, 0x06, 0xc5, 0x02, 0x8d, 0xf1, 0x7a, 0x3d, 0x4f,
0x14, 0x34, 0x58, 0x92, 0x37, 0x7c, 0x95, 0x53, 0x18, 0xa3, 0xff, 0x08, 0x1b, 0x07, 0x99, 0x94, 0xe2, 0x10, 0x0d,
0x3d, 0x25, 0x20, 0x13, 0x95, 0x84, 0x53, 0x4b, 0x6a, 0x92, 0x64, 0x5a, 0xce, 0xbb, 0x6c, 0x3a,
};
uint32_t ip_message_len1 = sizeof(ip_tst_message1);
// IP test message 2
@ -186,7 +187,7 @@ int tft_filter_test_ipv4_local_addr()
// Set IP test message
ip_msg2->N_bytes = ip_message_len2;
memcpy(ip_msg2->msg, ip_tst_message2, ip_message_len1);
memcpy(ip_msg2->msg, ip_tst_message2, ip_message_len2);
log1.info_hex(ip_msg2->msg, ip_msg2->N_bytes, "IP test message\n");
// Packet filter
@ -207,6 +208,104 @@ int tft_filter_test_ipv4_local_addr()
printf("Test TFT packet filter local IPv4 address successfull\n");
return 0;
}
int tft_filter_test_ipv4_remote_addr()
{
srslte::log_filter log1("TFT");
log1.set_level(srslte::LOG_LEVEL_DEBUG);
log1.set_hex_limit(128);
srslte::byte_buffer_pool *pool = srslte::byte_buffer_pool::get_instance();
srslte::unique_byte_buffer_t ip_msg1, ip_msg2;
ip_msg1 = allocate_unique_buffer(*pool);
ip_msg2 = allocate_unique_buffer(*pool);
// Filter length: 5 bytes
// Filter type: IPv4 local address
// Remote address: 127.0.0.2
uint8_t filter_message[5];
uint8_t filter_size = 5;
filter_message[0] = IPV4_REMOTE_ADDR_TYPE;
inet_pton(AF_INET, "127.0.0.2", &filter_message[1]);
// Set IP test message
ip_msg1->N_bytes = ip_message_len1;
memcpy(ip_msg1->msg, ip_tst_message1, ip_message_len1);
log1.info_hex(ip_msg1->msg, ip_msg1->N_bytes, "IP test message\n");
// Set IP test message
ip_msg2->N_bytes = ip_message_len2;
memcpy(ip_msg2->msg, ip_tst_message2, ip_message_len2);
log1.info_hex(ip_msg2->msg, ip_msg2->N_bytes, "IP test message\n");
// Packet filter
LIBLTE_MME_PACKET_FILTER_STRUCT packet_filter;
packet_filter.dir = LIBLTE_MME_TFT_PACKET_FILTER_DIRECTION_BIDIRECTIONAL;
packet_filter.id = 1;
packet_filter.eval_precedence = 0;
packet_filter.filter_size = filter_size;
memcpy(packet_filter.filter, filter_message, filter_size);
srsue::tft_packet_filter_t filter(packet_filter);
// Check filter
TESTASSERT(filter.match(ip_msg1));
TESTASSERT(!filter.match(ip_msg2));
printf("Test TFT packet filter remote IPv4 address successfull\n");
return 0;
}
int tft_filter_test_ipv4_tos()
{
srslte::log_filter log1("TFT");
log1.set_level(srslte::LOG_LEVEL_DEBUG);
log1.set_hex_limit(128);
srslte::byte_buffer_pool *pool = srslte::byte_buffer_pool::get_instance();
srslte::unique_byte_buffer_t ip_msg1, ip_msg2;
ip_msg1 = allocate_unique_buffer(*pool);
ip_msg2 = allocate_unique_buffer(*pool);
// Filter length: 2 bytes
// Filter type: Type of service
// ToS: 4
uint8_t filter_message[2];
uint8_t filter_size = 2;
filter_message[0] = TYPE_OF_SERVICE_TYPE;
filter_message[1] = 4;
// Set IP test message
ip_msg1->N_bytes = ip_message_len1;
memcpy(ip_msg1->msg, ip_tst_message1, ip_message_len1);
log1.info_hex(ip_msg1->msg, ip_msg1->N_bytes, "IP test message\n");
// Set IP test message
ip_msg2->N_bytes = ip_message_len2;
memcpy(ip_msg2->msg, ip_tst_message2, ip_message_len2);
log1.info_hex(ip_msg2->msg, ip_msg2->N_bytes, "IP test message\n");
// Packet filter
LIBLTE_MME_PACKET_FILTER_STRUCT packet_filter;
packet_filter.dir = LIBLTE_MME_TFT_PACKET_FILTER_DIRECTION_BIDIRECTIONAL;
packet_filter.id = 1;
packet_filter.eval_precedence = 0;
packet_filter.filter_size = filter_size;
memcpy(packet_filter.filter, filter_message, filter_size);
srsue::tft_packet_filter_t filter(packet_filter);
// Check filter
TESTASSERT(filter.match(ip_msg1));
TESTASSERT(!filter.match(ip_msg2));
printf("Test TFT packet filter type of service successfull\n");
return 0;
}
int main(int argc, char **argv)
{
srslte::byte_buffer_pool::get_instance();
@ -219,5 +318,11 @@ int main(int argc, char **argv)
if (tft_filter_test_ipv4_local_addr()) {
return -1;
}
if (tft_filter_test_ipv4_remote_addr()) {
return -1;
}
if (tft_filter_test_ipv4_tos()) {
return -1;
}
srslte::byte_buffer_pool::cleanup();
}

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