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# Copyright (c) 2017 Cisco and/or its affiliates.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

*** Settings ***
| Library | resources.libraries.python.NodePath
| Library | resources.libraries.python.Trace
| Resource | resources/libraries/robot/shared/default.robot
| Resource | resources/libraries/robot/nsh_sfc/default.robot
| Resource | resources/libraries/robot/shared/interfaces.robot
| Resource | resources/libraries/robot/ip/ip4.robot
| Force Tags | 3_NODE_SINGLE_LINK_TOPO | VM_ENV | FUNCTEST
| Suite Setup | Run Keywords
| ... | Configure all DUTs before test | AND
| ... | Configure all TGs for traffic script | AND
| ... | Update All Interface Data On All Nodes | ${nodes} | AND
| ... | Setup DUT nodes for 'SFF' functional testing
| Test Setup | Run Keywords | Save VPP PIDs | AND
| ... | Reset VAT History On All DUTs | ${nodes} | AND
| ... | Clear interface counters on all vpp nodes in topology | ${nodes}
| Test Teardown | Run Keywords
| ... | Show packet trace on all DUTs | ${nodes} | AND
| ... | Show VAT History On All DUTs | ${nodes} | AND
| ... | Verify VPP PID in Teardown
| Documentation | *NSH SFC SFF test cases*
| ...
| ... | Test the SFC Service Function Forward functional. DUT run the VPP
| ... | with NSH SFC Plugin, TG send a VxLAN-GPE+NSH packet to the DUT,
| ... | if the packet match the SFC SFF rules, the SFC SFF will
| ... | swap the VxLAN-GPE and NSH protocol.
| ... | DUT will loopback the packet to the TG.
| ... | The TG will capture this VxLAN-GPE+NSH packet and check the packet
| ... | field is correct.

*** Test Cases ***
| TC01: NSH SFC SFF functional test with 152B frame size
| | [Documentation]
| | ... | Make TG send 152 Bytes VxLAN-GPE+NSH packet to DUT ingress interface.\
| | ... | Make TG verify SFC SFF functional is correct.
| | ${frame_size}= | Set Variable | ${152}
| | Node "${src_node}" interface "${src_port}" send "${frame_size}" Bytes packet to node "${dst_node}" interface "${dst_port}" for "SFF" test

| TC02: NSH SFC SFF functional test with 256B frame size
| | [Documentation]
| | ... | Make TG send 256 Bytes VxLAN-GPE+NSH packet to DUT ingress interface.\
| | ... | Make TG verify SFC SFF functional is correct.
| | ${frame_size}= | Set Variable | ${256}
| | Node "${src_node}" interface "${src_port}" send "${frame_size}" Bytes packet to node "${dst_node}" interface "${dst_port}" for "SFF" test

| TC03: NSH SFC SFF functional test with 512B frame size
| | [Documentation]
| | ... | Make TG send 512 Bytes VxLAN-GPE+NSH packet to DUT ingress interface.\
| | ... | Make TG verify SFC SFF functional is correct.
| | ${frame_size}= | Set Variable | ${512}
| | Node "${src_node}" interface "${src_port}" send "${frame_size}" Bytes packet to node "${dst_node}" interface "${dst_port}" for "SFF" test

| TC04: NSH SFC SFF functional test with 1024B frame size
| | [Documentation]
| | ... | Make TG send 1024 Bytes VxLAN-GPE+NSH packet to DUT ingress interface.\
| | ... | Make TG verify SFC SFF functional is correct.
| | ${frame_size}= | Set Variable | ${1024}
| | Node "${src_node}" interface "${src_port}" send "${frame_size}" Bytes packet to node "${dst_node}" interface "${dst_port}" for "SFF" test

| TC05: NSH SFC SFF functional test with 1280B frame size
| | [Documentation]
| | ... | Make TG send 1280 Bytes VxLAN-GPE+NSH packet to DUT ingress interface.\
| | ... | Make TG verify SFC SFF functional is correct.
| | ${frame_size}= | Set Variable | ${1280}
| | Node "${src_node}" interface "${src_port}" send "${frame_size}" Bytes packet to node "${dst_node}" interface "${dst_port}" for "SFF" test

| TC06: NSH SFC SFF functional test with 1518B frame size
| | [Documentation]
| | ... | Make TG send 1518 Bytes VxLAN-GPE+NSH packet to DUT ingress interface.\
| | ... | Make TG verify SFC SFF functional is correct.
| | ${frame_size}= | Set Variable | ${1518}
| | Node "${src_node}" interface "${src_port}" send "${frame_size}" Bytes packet to node "${dst_node}" interface "${dst_port}" for "SFF" test
FTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include <sys/stat.h> #include <vnet/vnet.h> #include <vnet/pg/pg.h> #ifdef CLIB_UNIX #include <vnet/unix/pcap.h> #endif /* Root of all packet generator cli commands. */ /* *INDENT-OFF* */ VLIB_CLI_COMMAND (vlib_cli_pg_command, static) = { .path = "packet-generator", .short_help = "Packet generator commands", }; /* *INDENT-ON* */ void pg_enable_disable (u32 stream_index, int is_enable) { pg_main_t *pg = &pg_main; pg_stream_t *s; if (stream_index == ~0) { /* No stream specified: enable/disable all streams. */ /* *INDENT-OFF* */ pool_foreach (s, pg->streams, ({ pg_stream_enable_disable (pg, s, is_enable); })); /* *INDENT-ON* */ } else { /* enable/disable specified stream. */ s = pool_elt_at_index (pg->streams, stream_index); pg_stream_enable_disable (pg, s, is_enable); } } clib_error_t * pg_capture (pg_capture_args_t * a) { pg_main_t *pg = &pg_main; pg_interface_t *pi; if (a->is_enabled == 1) { struct stat sb; if (stat ((char *) a->pcap_file_name, &sb) != -1) return clib_error_return (0, "Cannot create pcap file"); } pi = pool_elt_at_index (pg->interfaces, a->dev_instance); vec_free (pi->pcap_file_name); memset (&pi->pcap_main, 0, sizeof (pi->pcap_main)); if (a->is_enabled == 0) return 0; pi->pcap_file_name = a->pcap_file_name; pi->pcap_main.file_name = (char *) pi->pcap_file_name; pi->pcap_main.n_packets_to_capture = a->count; pi->pcap_main.packet_type = PCAP_PACKET_TYPE_ethernet; return 0; } static clib_error_t * enable_disable_stream (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { pg_main_t *pg = &pg_main; int is_enable = cmd->function_arg != 0; u32 stream_index = ~0; if (unformat (input, "%U", unformat_eof)) ; else if (unformat (input, "%U", unformat_hash_vec_string, pg->stream_index_by_name, &stream_index)) ; else return clib_error_create ("unknown input `%U'", format_unformat_error, input); pg_enable_disable (stream_index, is_enable); return 0; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (enable_streams_cli, static) = { .path = "packet-generator enable-stream", .short_help = "Enable packet generator streams", .function = enable_disable_stream, .function_arg = 1, /* is_enable */ }; /* *INDENT-ON* */ /* *INDENT-OFF* */ VLIB_CLI_COMMAND (disable_streams_cli, static) = { .path = "packet-generator disable-stream", .short_help = "Disable packet generator streams", .function = enable_disable_stream, .function_arg = 0, /* is_enable */ }; /* *INDENT-ON* */ static u8 * format_pg_stream (u8 * s, va_list * va) { pg_stream_t *t = va_arg (*va, pg_stream_t *); u8 *v; if (!t) return format (s, "%=16s%=12s%=16s%s", "Name", "Enabled", "Count", "Parameters"); s = format (s, "%-16v%=12s%16Ld", t->name, pg_stream_is_enabled (t) ? "Yes" : "No", t->n_packets_generated); v = 0; v = format (v, "limit %Ld, ", t->n_packets_limit); v = format (v, "rate %.2e pps, ", t->rate_packets_per_second); v = format (v, "size %d%c%d, ", t->min_packet_bytes, t->packet_size_edit_type == PG_EDIT_RANDOM ? '+' : '-', t->max_packet_bytes); v = format (v, "buffer-size %d, ", t->buffer_bytes); v = format (v, "worker %d, ", t->worker_index); if (v) { s = format (s, " %v", v); vec_free (v); } return s; } static clib_error_t * show_streams (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { pg_main_t *pg = &pg_main; pg_stream_t *s; if (pool_elts (pg->streams) == 0) { vlib_cli_output (vm, "no streams currently defined"); goto done; } vlib_cli_output (vm, "%U", format_pg_stream, 0); /* *INDENT-OFF* */ pool_foreach (s, pg->streams, ({ vlib_cli_output (vm, "%U", format_pg_stream, s); })); /* *INDENT-ON* */ done: return 0; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (show_streams_cli, static) = { .path = "show packet-generator", .short_help = "Show packet generator streams", .function = show_streams, }; /* *INDENT-ON* */ static clib_error_t * pg_pcap_read (pg_stream_t * s, char *file_name) { #ifndef CLIB_UNIX return clib_error_return (0, "no pcap support"); #else pcap_main_t pm; clib_error_t *error; memset (&pm, 0, sizeof (pm)); pm.file_name = file_name; error = pcap_read (&pm); s->replay_packet_templates = pm.packets_read; s->min_packet_bytes = pm.min_packet_bytes; s->max_packet_bytes = pm.max_packet_bytes; s->buffer_bytes = pm.max_packet_bytes; /* For PCAP buffers we never re-use buffers. */ s->flags |= PG_STREAM_FLAGS_DISABLE_BUFFER_RECYCLE; if (s->n_packets_limit == 0) s->n_packets_limit = vec_len (pm.packets_read); return error; #endif /* CLIB_UNIX */ } static uword unformat_pg_stream_parameter (unformat_input_t * input, va_list * args) { pg_stream_t *s = va_arg (*args, pg_stream_t *); f64 x; if (unformat (input, "limit %f", &x)) s->n_packets_limit = x; else if (unformat (input, "rate %f", &x)) s->rate_packets_per_second = x; else if (unformat (input, "size %d-%d", &s->min_packet_bytes, &s->max_packet_bytes)) s->packet_size_edit_type = PG_EDIT_INCREMENT; else if (unformat (input, "size %d+%d", &s->min_packet_bytes, &s->max_packet_bytes)) s->packet_size_edit_type = PG_EDIT_RANDOM; else if (unformat (input, "buffer-size %d", &s->buffer_bytes)) ; else return 0; return 1; } static clib_error_t * validate_stream (pg_stream_t * s) { if (s->max_packet_bytes < s->min_packet_bytes) return clib_error_create ("max-size < min-size"); if (s->buffer_bytes >= 4096 || s->buffer_bytes == 0) return clib_error_create ("buffer-size must be positive and < 4096, given %d", s->buffer_bytes); if (s->rate_packets_per_second < 0) return clib_error_create ("negative rate"); return 0; } static clib_error_t * new_stream (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { clib_error_t *error = 0; u8 *tmp = 0; u32 hw_if_index; unformat_input_t sub_input = { 0 }; int sub_input_given = 0; vnet_main_t *vnm = vnet_get_main (); pg_main_t *pg = &pg_main; pg_stream_t s = { 0 }; char *pcap_file_name; s.sw_if_index[VLIB_RX] = s.sw_if_index[VLIB_TX] = ~0; s.node_index = ~0; s.max_packet_bytes = s.min_packet_bytes = 64; s.buffer_bytes = VLIB_BUFFER_DEFAULT_FREE_LIST_BYTES; s.if_id = 0; pcap_file_name = 0; while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) { if (unformat (input, "name %v", &tmp)) { if (s.name) vec_free (s.name); s.name = tmp; } else if (unformat (input, "node %U", unformat_vnet_hw_interface, vnm, &hw_if_index)) { vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index); s.node_index = hi->output_node_index; s.sw_if_index[VLIB_TX] = hi->sw_if_index; } else if (unformat (input, "source pg%u", &s.if_id)) ; else if (unformat (input, "node %U", unformat_vlib_node, vm, &s.node_index)) ; else if (unformat (input, "worker %u", &s.worker_index)) ; else if (unformat (input, "interface %U", unformat_vnet_sw_interface, vnm, &s.sw_if_index[VLIB_RX])) ; else if (unformat (input, "pcap %s", &pcap_file_name)) ; else if (!sub_input_given && unformat (input, "data %U", unformat_input, &sub_input)) sub_input_given++; else if (unformat_user (input, unformat_pg_stream_parameter, &s)) ; else if (unformat (input, "no-recycle")) s.flags |= PG_STREAM_FLAGS_DISABLE_BUFFER_RECYCLE; else { error = clib_error_create ("unknown input `%U'", format_unformat_error, input); goto done; } } error = validate_stream (&s); if (error) return error; if (!sub_input_given && !pcap_file_name) { error = clib_error_create ("no packet data given"); goto done; } if (s.node_index == ~0) { if (pcap_file_name != 0) { vlib_node_t *n = vlib_get_node_by_name (vm, (u8 *) "ethernet-input"); s.node_index = n->index; } else { error = clib_error_create ("output interface or node not given"); goto done; } } { pg_node_t *n; if (s.node_index < vec_len (pg->nodes)) n = pg->nodes + s.node_index; else n = 0; if (s.worker_index >= vlib_num_workers ()) s.worker_index = 0; if (pcap_file_name != 0) { error = pg_pcap_read (&s, pcap_file_name); if (error) goto done; vec_free (pcap_file_name); } else if (n && n->unformat_edit && unformat_user (&sub_input, n->unformat_edit, &s)) ; else if (!unformat_user (&sub_input, unformat_pg_payload, &s)) { error = clib_error_create ("failed to parse packet data from `%U'", format_unformat_error, &sub_input); goto done; } } pg_stream_add (pg, &s); return 0; done: pg_stream_free (&s); unformat_free (&sub_input); return error; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (new_stream_cli, static) = { .path = "packet-generator new", .function = new_stream, .short_help = "Create packet generator stream", .long_help = "Create packet generator stream\n" "\n" "Arguments:\n" "\n" "name STRING sets stream name\n" "interface STRING interface for stream output \n" "node NODE-NAME node for stream output\n" "data STRING specifies packet data\n" "pcap FILENAME read packet data from pcap file\n", }; /* *INDENT-ON* */ static clib_error_t * del_stream (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { pg_main_t *pg = &pg_main; u32 i; if (!unformat (input, "%U", &unformat_hash_vec_string, pg->stream_index_by_name, &i)) return clib_error_create ("expected stream name `%U'", format_unformat_error, input); pg_stream_del (pg, i); return 0; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (del_stream_cli, static) = { .path = "packet-generator delete", .function = del_stream, .short_help = "Delete stream with given name", }; /* *INDENT-ON* */ static clib_error_t * change_stream_parameters (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { pg_main_t *pg = &pg_main; pg_stream_t *s, s_new; u32 stream_index = ~0; clib_error_t *error; if (unformat (input, "%U", unformat_hash_vec_string, pg->stream_index_by_name, &stream_index)) ; else return clib_error_create ("expecting stream name; got `%U'", format_unformat_error, input); s = pool_elt_at_index (pg->streams, stream_index); s_new = s[0]; while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) { if (unformat_user (input, unformat_pg_stream_parameter, &s_new)) ; else return clib_error_create ("unknown input `%U'", format_unformat_error, input); } error = validate_stream (&s_new); if (!error) s[0] = s_new; return error; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (change_stream_parameters_cli, static) = { .path = "packet-generator configure", .short_help = "Change packet generator stream parameters", .function = change_stream_parameters, }; /* *INDENT-ON* */ static clib_error_t * pg_capture_cmd_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { clib_error_t *error = 0; vnet_main_t *vnm = vnet_get_main (); unformat_input_t _line_input, *line_input = &_line_input; vnet_hw_interface_t *hi = 0; u8 *pcap_file_name = 0; u32 hw_if_index; u32 is_disable = 0; u32 count = ~0; if (!unformat_user (input, unformat_line_input, line_input)) return 0; while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "%U", unformat_vnet_hw_interface, vnm, &hw_if_index)) { hi = vnet_get_hw_interface (vnm, hw_if_index); } else if (unformat (line_input, "pcap %s", &pcap_file_name)) ; else if (unformat (line_input, "count %u", &count)) ; else if (unformat (line_input, "disable")) is_disable = 1; else { error = clib_error_create ("unknown input `%U'", format_unformat_error, line_input); goto done; } } if (!hi) { error = clib_error_return (0, "Please specify interface name"); goto done; } if (hi->dev_class_index != pg_dev_class.index) { error = clib_error_return (0, "Please specify packet-generator interface"); goto done; } if (!pcap_file_name && is_disable == 0) { error = clib_error_return (0, "Please specify pcap file name"); goto done; } pg_capture_args_t _a, *a = &_a; a->hw_if_index = hw_if_index; a->dev_instance = hi->dev_instance; a->is_enabled = !is_disable; a->pcap_file_name = pcap_file_name; a->count = count; error = pg_capture (a); done: unformat_free (line_input); return error; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (pg_capture_cmd, static) = { .path = "packet-generator capture", .short_help = "packet-generator capture <interface name> pcap <filename> [count <n>]", .function = pg_capture_cmd_fn, }; /* *INDENT-ON* */ static clib_error_t * create_pg_if_cmd_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { pg_main_t *pg = &pg_main; unformat_input_t _line_input, *line_input = &_line_input; u32 if_id; clib_error_t *error = NULL; if (!unformat_user (input, unformat_line_input, line_input)) return 0; while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "interface pg%u", &if_id)) ; else { error = clib_error_create ("unknown input `%U'", format_unformat_error, line_input); goto done; } } pg_interface_add_or_get (pg, if_id); done: unformat_free (line_input); return error; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (create_pg_if_cmd, static) = { .path = "create packet-generator", .short_help = "create packet-generator interface <interface name>", .function = create_pg_if_cmd_fn, }; /* *INDENT-ON* */ /* Dummy init function so that we can be linked in. */ static clib_error_t * pg_cli_init (vlib_main_t * vm) { return 0; } VLIB_INIT_FUNCTION (pg_cli_init); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */