def test_tx_packet_reformat(self):
"""
Creates packet reformat (encap) action on TX and with QP action on RX
verifies that the packet was encapsulated as expected.
"""
self.client = Mlx5FlowResources(**self.dev_info)
outer = u.gen_outer_headers(self.client.msg_size)
# Due to encapsulation action Ipv4 and UDP checksum of the outer header
# will be recalculated, need to skip them during packet validation.
ipv4_id_idx = [18, 19]
ipv4_chksum_idx = [24, 25]
udp_chksum_idx = [34, 35]
# Server will receive encaped packet so message size must include the
# length of the outer part.
self.server = Mlx5FlowResources(msg_size=self.client.msg_size +
len(outer),
**self.dev_info)
empty_bytes_arr = bytes(MAX_MATCH_PARAM_SIZE)
empty_value_param = Mlx5FlowMatchParameters(len(empty_bytes_arr),
empty_bytes_arr)
# TX steering
tx_matcher = self.client.create_matcher(
empty_bytes_arr, u.MatchCriteriaEnable.NONE,
e.IBV_FLOW_ATTR_FLAGS_EGRESS, dve.MLX5DV_FLOW_TABLE_TYPE_NIC_TX_)
# Create encap action
reformat_action = Mlx5PacketReformatFlowAction(
self.client.ctx,
data=outer,
reformat_type=dve.
MLX5DV_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L2_TUNNEL_,
ft_type=dve.MLX5DV_FLOW_TABLE_TYPE_NIC_TX_)
action_reformat_attr = Mlx5FlowActionAttr(
flow_action=reformat_action,
action_type=dve.MLX5DV_FLOW_ACTION_IBV_FLOW_ACTION)
self.client.flow = Mlx5Flow(tx_matcher, empty_value_param,
[action_reformat_attr], 1)
# RX steering
rx_matcher = self.server.create_matcher(empty_bytes_arr,
u.MatchCriteriaEnable.NONE)
action_qp_attr = Mlx5FlowActionAttr(
action_type=dve.MLX5DV_FLOW_ACTION_DEST_IBV_QP, qp=self.server.qp)
self.server.flow = Mlx5Flow(rx_matcher, empty_value_param,
[action_qp_attr], 1)
# Send traffic and validate packet
packet = u.gen_packet(self.client.msg_size)
u.raw_traffic(self.client,
self.server,
self.iters,
expected_packet=outer + packet,
skip_idxs=ipv4_id_idx + ipv4_chksum_idx + udp_chksum_idx)
def test_smac_matcher_to_qp_flow(self):
"""
Creates a matcher to match on outer source mac and a flow that forwards
packets to QP when matching on source mac.
"""
self.create_players(Mlx5FlowResources)
smac_mask = bytes([0xff] * 6)
matcher = self.server.create_matcher(smac_mask,
u.MatchCriteriaEnable.OUTER)
smac_value = struct.pack(
'!6s', bytes.fromhex(PacketConsts.SRC_MAC.replace(':', '')))
value_param = Mlx5FlowMatchParameters(len(smac_value), smac_value)
action_qp = Mlx5FlowActionAttr(
action_type=dve.MLX5DV_FLOW_ACTION_DEST_IBV_QP, qp=self.server.qp)
self.server.flow = Mlx5Flow(matcher, value_param, [action_qp], 1)
u.raw_traffic(self.client, self.server, self.iters)