@@ -42,7 +42,6 @@ class TestVM2VMVirtioUser(TestCase):
self.vhost_user_pmd = PmdOutput(self.dut, self.vhost_user)
self.virtio_user0_pmd = PmdOutput(self.dut, self.virtio_user0)
self.virtio_user1_pmd = PmdOutput(self.dut, self.virtio_user1)
- self.dut.restore_interfaces()
self.dump_port = "device_id=net_virtio_user1"
def set_up(self):
@@ -172,62 +171,6 @@ class TestVM2VMVirtioUser(TestCase):
self.virtio_user0_pmd.execute_cmd("set txpkts 2000")
self.virtio_user0_pmd.execute_cmd("start tx_first 1")
- def send_251_64_and_32_8k_pkts(self):
- """
- send 251 small packets and 32 8K packets from virtio_user0 testpmd
- """
- self.virtio_user0_pmd.execute_cmd("set burst 1")
- self.virtio_user0_pmd.execute_cmd("start tx_first 27")
- self.virtio_user0_pmd.execute_cmd("stop")
- self.virtio_user0_pmd.execute_cmd("set burst 32")
- self.virtio_user0_pmd.execute_cmd("start tx_first 7")
- self.virtio_user0_pmd.execute_cmd("stop")
- self.virtio_user0_pmd.execute_cmd("set txpkts 2000,2000,2000,2000")
- self.virtio_user0_pmd.execute_cmd("start tx_first 1")
- self.virtio_user0_pmd.execute_cmd("stop")
-
- def send_251_960byte_and_32_64byte_pkts(self):
- """
- imix small pkts
- send 960byte and 64byte length packets from virtio_user0 testpmd
- """
- self.virtio_user0_pmd.execute_cmd("set burst 1")
- self.virtio_user0_pmd.execute_cmd("set txpkts 64,128,256,512")
- self.virtio_user0_pmd.execute_cmd("start tx_first 27")
- self.virtio_user0_pmd.execute_cmd("stop")
- self.virtio_user0_pmd.execute_cmd("set burst 32")
- self.virtio_user0_pmd.execute_cmd("start tx_first 7")
- self.virtio_user0_pmd.execute_cmd("stop")
- self.virtio_user0_pmd.execute_cmd("set txpkts 64")
- self.virtio_user0_pmd.execute_cmd("start tx_first 1")
- self.virtio_user0_pmd.execute_cmd("stop")
-
- def send_27_4640byte_and_224_64byte_pkts(self):
- """
- send 27 4640byte and 224 64byte length packets from virtio_user0 testpmd
- """
- self.virtio_user0_pmd.execute_cmd("set burst 1")
- self.virtio_user0_pmd.execute_cmd("set txpkts 64,256,2000,64,256,2000")
- self.virtio_user0_pmd.execute_cmd("start tx_first 27")
- self.virtio_user0_pmd.execute_cmd("stop")
- self.virtio_user0_pmd.execute_cmd("set burst 32")
- self.virtio_user0_pmd.execute_cmd("set txpkts 64")
- self.virtio_user0_pmd.execute_cmd("start tx_first 7")
- self.virtio_user0_pmd.execute_cmd("stop")
-
- def send_224_64byte_and_27_4640byte_pkts(self):
- """
- send 224 64byte and 27 4640byte length packets from virtio_user0 testpmd
- """
- self.virtio_user0_pmd.execute_cmd("set burst 32")
- self.virtio_user0_pmd.execute_cmd("set txpkts 64")
- self.virtio_user0_pmd.execute_cmd("start tx_first 7")
- self.virtio_user0_pmd.execute_cmd("stop")
- self.virtio_user0_pmd.execute_cmd("set burst 1")
- self.virtio_user0_pmd.execute_cmd("set txpkts 64,256,2000,64,256,2000")
- self.virtio_user0_pmd.execute_cmd("start tx_first 27")
- self.virtio_user0_pmd.execute_cmd("stop")
-
def launch_pdump_to_capture_pkt(self, dump_port, file_prefix, filename):
"""
launch pdump app with dump_port and file_prefix
@@ -236,7 +179,7 @@ class TestVM2VMVirtioUser(TestCase):
if dump the virtio-testpmd, the virtio-testpmd should started before launch pdump
"""
eal_params = self.dut.create_eal_parameters(
- cores="Default", prefix=file_prefix, fixed_prefix=True
+ cores="Default", prefix=file_prefix, fixed_prefix=True, ports=[]
)
command_line = (
self.app_pdump
@@ -299,40 +242,23 @@ class TestVM2VMVirtioUser(TestCase):
self.virtio_user0_pmd.execute_cmd("set txpkts 2000,2000,2000,2000")
self.virtio_user0_pmd.execute_cmd("start tx_first 1")
- def check_packet_payload_valid(
- self, filename, small_pkts_num, large_8k_pkts_num, large_2k_pkts_num
- ):
+ def check_packet_payload_valid(self, filename, check_dict):
"""
check the payload is valid
"""
- # stop pdump
- total_pkts_num = small_pkts_num + large_8k_pkts_num + large_2k_pkts_num
- time.sleep(20)
self.pdump_user.send_expect("^c", "# ", 60)
- # quit testpmd
- self.quit_all_testpmd()
- time.sleep(2)
- self.dut.session.copy_file_from(src="%s" % filename, dst="%s" % filename)
+ self.dut.session.copy_file_from(src=filename, dst=filename)
pkt = Packet()
pkts = pkt.read_pcapfile(filename)
- self.verify(
- pkts is not None and len(pkts) == total_pkts_num,
- "The virtio/vhost do not capture all the packets"
- "expect pkt num is: %d, actual pkt num is: %d"
- % (total_pkts_num, len(pkts)),
- )
- for i in range(len(pkts)):
- if i < small_pkts_num:
- pkt_len = 64
- elif i >= small_pkts_num and i < small_pkts_num + large_8k_pkts_num:
- pkt_len = 8000
- else:
- pkt_len = 2000
+ for key, value in check_dict.items():
+ count = 0
+ for i in range(len(pkts)):
+ if len(pkts[i]) == key:
+ count += 1
self.verify(
- len(pkts[i]) == pkt_len,
- "the received pkts len is wrong,"
- "the received pkt len is: %d, expect pkt len is: %d"
- % (len(pkts[i]), pkt_len),
+ value == count,
+ "pdump file: have not include enough packets, length %d, count: %d"
+ % (key, count),
)
def check_vhost_and_virtio_pkts_content(self):
@@ -402,30 +328,23 @@ class TestVM2VMVirtioUser(TestCase):
Test Case 1: packed virtqueue vm2vm mergeable path test
about packed virtqueue path, the 8k length pkt will occupies 1 ring since indirect feature enabled
"""
- small_pkts_num = 251
- large_8k_pkts_num = 5
- large_2k_pkts_num = 32
path_mode = "packed_vq=1,mrg_rxbuf=1,in_order=0"
ringsize = 256
extern_params = ""
# get dump pcap file of virtio
# the virtio0 will send 283 pkts, but the virtio only will received 256 pkts
- # then resend 32 large pkts, all will received
+ # then resend 32(5 8k and 32 2k) large pkts, all will received
self.logger.info("check pcap file info about virtio")
self.get_dump_file_of_virtio_user(path_mode, extern_params, ringsize)
self.send_32_2k_pkts_from_virtio0()
- self.check_packet_payload_valid(
- self.dump_virtio_pcap, small_pkts_num, large_8k_pkts_num, large_2k_pkts_num
- )
-
+ check_dict = {64: 251, 2000: 32, 8000: 5}
+ self.check_packet_payload_valid(self.dump_virtio_pcap, check_dict)
# get dump pcap file of vhost
self.logger.info("check pcap file info about vhost")
+ self.quit_all_testpmd()
self.get_dump_file_of_vhost_user(path_mode, extern_params, ringsize)
self.send_32_2k_pkts_from_virtio0()
- self.check_packet_payload_valid(
- self.dump_vhost_pcap, small_pkts_num, large_8k_pkts_num, large_2k_pkts_num
- )
-
+ self.check_packet_payload_valid(self.dump_vhost_pcap, check_dict)
self.logger.info("diff the pcap file of vhost and virtio")
self.check_vhost_and_virtio_pkts_content()
@@ -434,9 +353,6 @@ class TestVM2VMVirtioUser(TestCase):
Test Case 2: packed virtqueue vm2vm inorder mergeable path test
about packed inorder mergeable path, the 8k length pkt will occupies 1 ring since indirect feature enabled
"""
- small_pkts_num = 251
- large_8k_pkts_num = 5
- large_2k_pkts_num = 0
path_mode = "packed_vq=1,mrg_rxbuf=1,in_order=1"
ringsize = 256
extern_params = ""
@@ -444,17 +360,13 @@ class TestVM2VMVirtioUser(TestCase):
# the virtio0 will send 283 pkts, but the virtio only will received 256 pkts
self.logger.info("check pcap file info about virtio")
self.get_dump_file_of_virtio_user(path_mode, extern_params, ringsize)
- self.check_packet_payload_valid(
- self.dump_virtio_pcap, small_pkts_num, large_8k_pkts_num, large_2k_pkts_num
- )
-
+ check_dict = {64: 251, 2000: 0, 8000: 5}
+ self.check_packet_payload_valid(self.dump_virtio_pcap, check_dict)
# get dump pcap file of vhost
self.logger.info("check pcap file info about vhost")
+ self.quit_all_testpmd()
self.get_dump_file_of_vhost_user(path_mode, extern_params, ringsize)
- self.check_packet_payload_valid(
- self.dump_vhost_pcap, small_pkts_num, large_8k_pkts_num, large_2k_pkts_num
- )
-
+ self.check_packet_payload_valid(self.dump_vhost_pcap, check_dict)
self.logger.info("diff the pcap file of vhost and virtio")
self.check_vhost_and_virtio_pkts_content()
@@ -463,9 +375,6 @@ class TestVM2VMVirtioUser(TestCase):
Test Case 3: packed virtqueue vm2vm non-mergeable path test
about non-mergeable path, it can not received large pkts
"""
- small_pkts_num = 251
- large_8k_pkts_num = 0
- large_2k_pkts_num = 0
path_mode = "packed_vq=1,mrg_rxbuf=0,in_order=0"
ringsize = 256
extern_params = ""
@@ -474,17 +383,13 @@ class TestVM2VMVirtioUser(TestCase):
# the no-mergeable path can not received large pkts
self.logger.info("check pcap file info about virtio")
self.get_dump_file_of_virtio_user(path_mode, extern_params, ringsize)
- self.check_packet_payload_valid(
- self.dump_virtio_pcap, small_pkts_num, large_8k_pkts_num, large_2k_pkts_num
- )
-
+ check_dict = {64: 251, 2000: 0, 8000: 0}
+ self.check_packet_payload_valid(self.dump_virtio_pcap, check_dict)
# get dump pcap file of vhost
self.logger.info("check pcap file info about vhost")
+ self.quit_all_testpmd()
self.get_dump_file_of_vhost_user(path_mode, extern_params, ringsize)
- self.check_packet_payload_valid(
- self.dump_vhost_pcap, small_pkts_num, large_8k_pkts_num, large_2k_pkts_num
- )
-
+ self.check_packet_payload_valid(self.dump_vhost_pcap, check_dict)
self.logger.info("diff the pcap file of vhost and virtio")
self.check_vhost_and_virtio_pkts_content()
@@ -493,9 +398,6 @@ class TestVM2VMVirtioUser(TestCase):
Test Case 4: packed virtqueue vm2vm inorder non-mergeable path test
about non-mergeable path, it can not received large pkts
"""
- small_pkts_num = 251
- large_8k_pkts_num = 0
- large_2k_pkts_num = 0
path_mode = "packed_vq=1,mrg_rxbuf=0,in_order=1,vectorized=1"
extern_params = "--rx-offloads=0x10"
ringsize = 256
@@ -504,17 +406,13 @@ class TestVM2VMVirtioUser(TestCase):
# the no-mergeable path can not received large pkts
self.logger.info("check pcap file info about virtio")
self.get_dump_file_of_virtio_user(path_mode, extern_params, ringsize)
- self.check_packet_payload_valid(
- self.dump_virtio_pcap, small_pkts_num, large_8k_pkts_num, large_2k_pkts_num
- )
-
+ check_dict = {64: 251, 2000: 0, 8000: 0}
+ self.check_packet_payload_valid(self.dump_virtio_pcap, check_dict)
# get dump pcap file of vhost
self.logger.info("check pcap file info about vhost")
+ self.quit_all_testpmd()
self.get_dump_file_of_vhost_user(path_mode, extern_params, ringsize)
- self.check_packet_payload_valid(
- self.dump_vhost_pcap, small_pkts_num, large_8k_pkts_num, large_2k_pkts_num
- )
-
+ self.check_packet_payload_valid(self.dump_vhost_pcap, check_dict)
self.logger.info("diff the pcap file of vhost and virtio")
self.check_vhost_and_virtio_pkts_content()
@@ -523,9 +421,6 @@ class TestVM2VMVirtioUser(TestCase):
Test Case 10: packed virtqueue vm2vm inorder non-mergeable path test
about non-mergeable path, it can not received large pkts
"""
- small_pkts_num = 251
- large_8k_pkts_num = 0
- large_2k_pkts_num = 0
path_mode = "packed_vq=1,mrg_rxbuf=0,in_order=1,vectorized=1"
extern_params = ""
ringsize = 256
@@ -534,17 +429,13 @@ class TestVM2VMVirtioUser(TestCase):
# the no-mergeable path can not received large pkts
self.logger.info("check pcap file info about virtio")
self.get_dump_file_of_virtio_user(path_mode, extern_params, ringsize)
- self.check_packet_payload_valid(
- self.dump_virtio_pcap, small_pkts_num, large_8k_pkts_num, large_2k_pkts_num
- )
-
+ check_dict = {64: 251, 2000: 0, 8000: 0}
+ self.check_packet_payload_valid(self.dump_virtio_pcap, check_dict)
# get dump pcap file of vhost
self.logger.info("check pcap file info about vhost")
+ self.quit_all_testpmd()
self.get_dump_file_of_vhost_user(path_mode, extern_params, ringsize)
- self.check_packet_payload_valid(
- self.dump_vhost_pcap, small_pkts_num, large_8k_pkts_num, large_2k_pkts_num
- )
-
+ self.check_packet_payload_valid(self.dump_vhost_pcap, check_dict)
self.logger.info("diff the pcap file of vhost and virtio")
self.check_vhost_and_virtio_pkts_content()
@@ -555,9 +446,6 @@ class TestVM2VMVirtioUser(TestCase):
Test Case 11: packed virtqueue vm2vm inorder non-mergeable path test
about non-mergeable path, it can not received large pkts
"""
- small_pkts_num = 251
- large_8k_pkts_num = 0
- large_2k_pkts_num = 0
path_mode = "packed_vq=1,mrg_rxbuf=0,in_order=1,vectorized=1"
extern_params = ""
ringsize = 255
@@ -566,17 +454,13 @@ class TestVM2VMVirtioUser(TestCase):
# the no-mergeable path can not received large pkts
self.logger.info("check pcap file info about virtio")
self.get_dump_file_of_virtio_user(path_mode, extern_params, ringsize)
- self.check_packet_payload_valid(
- self.dump_virtio_pcap, small_pkts_num, large_8k_pkts_num, large_2k_pkts_num
- )
-
+ check_dict = {64: 251, 2000: 0, 8000: 0}
+ self.check_packet_payload_valid(self.dump_virtio_pcap, check_dict)
# get dump pcap file of vhost
self.logger.info("check pcap file info about vhost")
+ self.quit_all_testpmd()
self.get_dump_file_of_vhost_user(path_mode, extern_params, ringsize)
- self.check_packet_payload_valid(
- self.dump_vhost_pcap, small_pkts_num, large_8k_pkts_num, large_2k_pkts_num
- )
-
+ self.check_packet_payload_valid(self.dump_vhost_pcap, check_dict)
self.logger.info("diff the pcap file of vhost and virtio")
self.check_vhost_and_virtio_pkts_content()
@@ -586,9 +470,6 @@ class TestVM2VMVirtioUser(TestCase):
about split virtqueue path, the 8k length pkt will occupies 1 ring,
so, as the rxt=256, if received pkts include 8k chain pkt, also will received up to 256 pkts
"""
- small_pkts_num = 251
- large_8k_pkts_num = 5
- large_2k_pkts_num = 32
path_mode = "packed_vq=0,mrg_rxbuf=1,in_order=0"
ringsize = 256
extern_params = ""
@@ -596,20 +477,16 @@ class TestVM2VMVirtioUser(TestCase):
# the virtio0 will send 283 pkts, but the virtio only will received 256 pkts
# then virtio send 32 large pkts, the virtio will all received
self.logger.info("check pcap file info about virtio")
+ check_dict = {64: 251, 2000: 32, 8000: 5}
self.get_dump_file_of_virtio_user(path_mode, extern_params, ringsize)
self.send_32_2k_pkts_from_virtio0()
- self.check_packet_payload_valid(
- self.dump_virtio_pcap, small_pkts_num, large_8k_pkts_num, large_2k_pkts_num
- )
-
+ self.check_packet_payload_valid(self.dump_virtio_pcap, check_dict)
# get dump pcap file of vhost
self.logger.info("check pcap file info about vhost")
+ self.quit_all_testpmd()
self.get_dump_file_of_vhost_user(path_mode, extern_params, ringsize)
self.send_32_2k_pkts_from_virtio0()
- self.check_packet_payload_valid(
- self.dump_vhost_pcap, small_pkts_num, large_8k_pkts_num, large_2k_pkts_num
- )
-
+ self.check_packet_payload_valid(self.dump_vhost_pcap, check_dict)
self.logger.info("diff the pcap file of vhost and virtio")
self.check_vhost_and_virtio_pkts_content()
@@ -620,27 +497,20 @@ class TestVM2VMVirtioUser(TestCase):
2000,2000,2000,2000 will need 4 consequent ring, still need one ring put header
so, as the rxt=256, if received pkts include 8k chain pkt, it will received up to 252 pkts
"""
- small_pkts_num = 251
- large_8k_pkts_num = 1
- large_2k_pkts_num = 0
path_mode = "packed_vq=0,mrg_rxbuf=1,in_order=1"
ringsize = 256
extern_params = ""
# get dump pcap file of virtio
# the virtio0 will send 283 pkts, but the virtio only will received 252 pkts
self.logger.info("check pcap file info about virtio")
+ check_dict = {64: 251, 2000: 0, 8000: 1}
self.get_dump_file_of_virtio_user(path_mode, extern_params, ringsize)
- self.check_packet_payload_valid(
- self.dump_virtio_pcap, small_pkts_num, large_8k_pkts_num, large_2k_pkts_num
- )
-
+ self.check_packet_payload_valid(self.dump_virtio_pcap, check_dict)
# get dump pcap file of vhost
self.logger.info("check pcap file info about vhost")
+ self.quit_all_testpmd()
self.get_dump_file_of_vhost_user(path_mode, extern_params, ringsize)
- self.check_packet_payload_valid(
- self.dump_vhost_pcap, small_pkts_num, large_8k_pkts_num, large_2k_pkts_num
- )
-
+ self.check_packet_payload_valid(self.dump_vhost_pcap, check_dict)
self.logger.info("diff the pcap file of vhost and virtio")
self.check_vhost_and_virtio_pkts_content()
@@ -649,27 +519,20 @@ class TestVM2VMVirtioUser(TestCase):
Test Case 7: split virtqueue vm2vm non-mergeable path test
about non-mergeable path, it can not received large pkts
"""
- small_pkts_num = 251
- large_8k_pkts_num = 0
- large_2k_pkts_num = 0
path_mode = "packed_vq=0,mrg_rxbuf=0,in_order=0,vectorized=1"
ringsize = 256
extern_params = "--enable-hw-vlan-strip"
# get dump pcap file of virtio
# the virtio0 will send 283 pkts, but the virtio only will received 251 pkts
self.logger.info("check pcap file info about virtio")
+ check_dict = {64: 251, 2000: 0, 8000: 0}
self.get_dump_file_of_virtio_user(path_mode, extern_params, ringsize)
- self.check_packet_payload_valid(
- self.dump_virtio_pcap, small_pkts_num, large_8k_pkts_num, large_2k_pkts_num
- )
-
+ self.check_packet_payload_valid(self.dump_virtio_pcap, check_dict)
# get dump pcap file of vhost
self.logger.info("check pcap file info about vhost")
+ self.quit_all_testpmd()
self.get_dump_file_of_vhost_user(path_mode, extern_params, ringsize)
- self.check_packet_payload_valid(
- self.dump_vhost_pcap, small_pkts_num, large_8k_pkts_num, large_2k_pkts_num
- )
-
+ self.check_packet_payload_valid(self.dump_vhost_pcap, check_dict)
self.logger.info("diff the pcap file of vhost and virtio")
self.check_vhost_and_virtio_pkts_content()
@@ -678,27 +541,20 @@ class TestVM2VMVirtioUser(TestCase):
Test Case 8: split virtqueue vm2vm inorder non-mergeable path test
about non-mergeable path, it can not received large pkts
"""
- small_pkts_num = 251
- large_8k_pkts_num = 0
- large_2k_pkts_num = 0
path_mode = "packed_vq=0,mrg_rxbuf=0,in_order=1"
ringsize = 256
extern_params = "--rx-offloads=0x10"
# get dump pcap file of virtio
# the virtio0 will send 283 pkts, but the virtio only will received 251 pkts
self.logger.info("check pcap file info about virtio")
+ check_dict = {64: 251, 2000: 0, 8000: 0}
self.get_dump_file_of_virtio_user(path_mode, extern_params, ringsize)
- self.check_packet_payload_valid(
- self.dump_virtio_pcap, small_pkts_num, large_8k_pkts_num, large_2k_pkts_num
- )
-
+ self.check_packet_payload_valid(self.dump_virtio_pcap, check_dict)
# get dump pcap file of vhost
self.logger.info("check pcap file info about vhost")
+ self.quit_all_testpmd()
self.get_dump_file_of_vhost_user(path_mode, extern_params, ringsize)
- self.check_packet_payload_valid(
- self.dump_vhost_pcap, small_pkts_num, large_8k_pkts_num, large_2k_pkts_num
- )
-
+ self.check_packet_payload_valid(self.dump_vhost_pcap, check_dict)
self.logger.info("diff the pcap file of vhost and virtio")
self.check_vhost_and_virtio_pkts_content()
@@ -707,30 +563,38 @@ class TestVM2VMVirtioUser(TestCase):
Test Case 9: split virtqueue vm2vm vector_rx path test
about vector_rx path, it can not received large pkts
"""
- small_pkts_num = 251
- large_8k_pkts_num = 0
- large_2k_pkts_num = 0
path_mode = "packed_vq=0,mrg_rxbuf=0,in_order=0,vectorized=1"
ringsize = 256
extern_params = ""
# get dump pcap file of virtio
# the virtio0 will send 283 pkts, but the virtio only will received 251 pkts
self.logger.info("check pcap file info about virtio")
+ check_dict = {64: 251, 2000: 0, 8000: 0}
self.get_dump_file_of_virtio_user(path_mode, extern_params, ringsize)
- self.check_packet_payload_valid(
- self.dump_virtio_pcap, small_pkts_num, large_8k_pkts_num, large_2k_pkts_num
- )
-
+ self.check_packet_payload_valid(self.dump_virtio_pcap, check_dict)
# get dump pcap file of vhost
self.logger.info("check pcap file info about vhost")
+ self.quit_all_testpmd()
self.get_dump_file_of_vhost_user(path_mode, extern_params, ringsize)
- self.check_packet_payload_valid(
- self.dump_vhost_pcap, small_pkts_num, large_8k_pkts_num, large_2k_pkts_num
- )
-
+ self.check_packet_payload_valid(self.dump_vhost_pcap, check_dict)
self.logger.info("diff the pcap file of vhost and virtio")
self.check_vhost_and_virtio_pkts_content()
+ def test_vm2vm_virtio_user_packed_virtqueue_vectorized_path_test_indirect_desc(
+ self,
+ ):
+ """
+ Test Case 12: packed virtqueue vm2vm vectorized-tx path multi-queues test indirect descriptor
+ """
+ path_mode = "packed_vq=1,mrg_rxbuf=1,in_order=1,vectorized=1"
+ ringsize = 256
+ extern_params = ""
+ # get dump pcap file of virtio
+ self.logger.info("check pcap file info about virtio")
+ check_dict = {64: 251, 2000: 0, 8000: 5}
+ self.get_dump_file_of_virtio_user(path_mode, extern_params, ringsize)
+ self.check_packet_payload_valid(self.dump_virtio_pcap, check_dict)
+
def close_all_session(self):
if getattr(self, "vhost_user", None):
self.dut.close_session(self.vhost_user)
@@ -753,5 +617,4 @@ class TestVM2VMVirtioUser(TestCase):
"""
Run after each test suite.
"""
- self.bind_nic_driver(self.dut_ports, self.drivername)
self.close_all_session()