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pg: misc improvements and fixes

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1) pg can typically injects packets in ethernet-input, ip4-input or
ip6-input. Make sure offload offsets are correctly set for ip4-input and
ip6-input.
2) add hw-addr support for ethernet mode (only available through cli)
3) refactor pg creation code to improve the readability by using
data structure pg_interface_args_t
4) fix the pg input and output traces to use headers according to
pg interface mode
5) introduce pg interface flags i.e. checksum, gso, gro

Type: improvement

Change-Id: Iffed502e9c6357d7ef8e8a72217867e8297236aa
Signed-off-by: Benoît Ganne <bganne@cisco.com>
Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
This commit is contained in:
Benoît Ganne 2024-07-05 14:09:35 +02:00 committed by Dave Wallace
parent 504a7d1c93
commit 8fadde6f01
7 changed files with 327 additions and 86 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
src/vnet/pg/cli.c
View File

@ -40,6 +40,7 @@
#include <sys/stat.h>
#include <vnet/vnet.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/pg/pg.h>
#include <strings.h>
@ -663,23 +664,29 @@ create_pg_if_cmd_fn (vlib_main_t * vm,
{
pg_main_t *pg = &pg_main;
unformat_input_t _line_input, *line_input = &_line_input;
u32 if_id = ~0, gso_enabled = 0, gso_size = 0, coalesce_enabled = 0;
pg_interface_args_t args = { 0 };
clib_error_t *error = NULL;
pg_interface_mode_t mode = PG_MODE_ETHERNET;
args.if_id = ~0;
args.flags = 0;
args.rv = -1;
args.hw_addr_set = 0;
args.gso_size = 0;
args.mode = PG_MODE_ETHERNET;
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, "pg%u", &if_id))
if (unformat (line_input, "pg%u", &args.if_id))
;
else if (unformat (line_input, "coalesce-enabled"))
coalesce_enabled = 1;
args.flags |= PG_INTERFACE_FLAG_GRO_COALESCE;
else if (unformat (line_input, "gso-enabled"))
{
gso_enabled = 1;
if (unformat (line_input, "gso-size %u", &gso_size))
args.flags |= PG_INTERFACE_FLAG_GSO;
if (unformat (line_input, "gso-size %u", &args.gso_size))
;
else
{
@ -687,10 +694,13 @@ create_pg_if_cmd_fn (vlib_main_t * vm,
goto done;
}
}
else if (unformat (line_input, "hw-addr %U", unformat_ethernet_address,
args.hw_addr.bytes))
args.hw_addr_set = 1;
else if (unformat (line_input, "mode ip4"))
mode = PG_MODE_IP4;
args.mode = PG_MODE_IP4;
else if (unformat (line_input, "mode ip6"))
mode = PG_MODE_IP6;
args.mode = PG_MODE_IP6;
else
{
error = clib_error_create ("unknown input `%U'",
@ -699,8 +709,7 @@ create_pg_if_cmd_fn (vlib_main_t * vm,
}
}
pg_interface_add_or_get (pg, if_id, gso_enabled, gso_size, coalesce_enabled,
mode);
pg_interface_add_or_get (pg, &args);
done:
unformat_free (line_input);
@ -710,9 +719,10 @@ done:
VLIB_CLI_COMMAND (create_pg_if_cmd, static) = {
.path = "create packet-generator interface",
.short_help = "create packet-generator interface <interface name>"
" [gso-enabled gso-size <size> [coalesce-enabled]]"
" [mode <ethernet | ip4 | ip6>]",
.short_help =
"create packet-generator interface <interface name>"
" [hw-addr <addr>] [gso-enabled gso-size <size> [coalesce-enabled]]"
" [mode <ethernet | ip4 | ip6>]",
.function = create_pg_if_cmd_fn,
};

74
src/vnet/pg/input.c
View File

@ -1407,6 +1407,7 @@ typedef struct
u32 packet_length;
u32 sw_if_index;
u32 next_index;
/* Use pre data for packet data. */
vlib_buffer_t buffer;
@ -1422,6 +1423,7 @@ format_pg_input_trace (u8 * s, va_list * va)
pg_stream_t *stream;
vlib_node_t *n;
u32 indent = format_get_indent (s);
const char *next_nodes[] = VNET_DEVICE_INPUT_NEXT_NODES;
stream = 0;
if (!pool_is_free_index (pg->streams, t->stream_index))
@ -1434,6 +1436,10 @@ format_pg_input_trace (u8 * s, va_list * va)
s = format (s, ", %d bytes", t->packet_length);
s = format (s, ", sw_if_index %d", t->sw_if_index);
if (t->next_index < VNET_DEVICE_INPUT_N_NEXT_NODES)
s = format (s, ", next_node %s", next_nodes[t->next_index]);
else
s = format (s, ", next_node %d", t->next_index);
s = format (s, "\n%U%U", format_white_space, indent,
format_vnet_buffer_no_chain, &t->buffer);
@ -1497,6 +1503,9 @@ pg_input_trace (pg_main_t * pg,
t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
t1->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_RX];
t0->next_index = next_index;
t1->next_index = next_index;
clib_memcpy_fast (&t0->buffer, b0,
sizeof (b0[0]) - sizeof (b0->pre_data));
clib_memcpy_fast (&t1->buffer, b1,
@ -1527,6 +1536,7 @@ pg_input_trace (pg_main_t * pg,
t0->stream_index = stream_index;
t0->packet_length = vlib_buffer_length_in_chain (vm, b0);
t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
t0->next_index = next_index;
clib_memcpy_fast (&t0->buffer, b0,
sizeof (b0[0]) - sizeof (b0->pre_data));
clib_memcpy_fast (t0->buffer.pre_data, b0->data,
@ -1537,31 +1547,49 @@ pg_input_trace (pg_main_t * pg,
}
static_always_inline void
fill_buffer_offload_flags (vlib_main_t *vm, u32 *buffers, u32 n_buffers,
u32 buffer_oflags, int gso_enabled, u32 gso_size)
fill_buffer_offload_flags (vlib_main_t *vm, u32 next_index, u32 *buffers,
u32 n_buffers, u32 buffer_oflags, int gso_enabled,
u32 gso_size)
{
for (int i = 0; i < n_buffers; i++)
{
vlib_buffer_t *b0 = vlib_get_buffer (vm, buffers[i]);
u8 l4_proto = 0;
vnet_buffer_oflags_t oflags = 0;
u16 ethertype;
u16 l2hdr_sz;
ethernet_header_t *eh =
(ethernet_header_t *) vlib_buffer_get_current (b0);
u16 ethertype = clib_net_to_host_u16 (eh->type);
u16 l2hdr_sz = sizeof (ethernet_header_t);
if (ethernet_frame_is_tagged (ethertype))
/* pg can typically injects to ethernet-input or ip4/6-input */
if (VNET_DEVICE_INPUT_NEXT_IP4_INPUT == next_index)
{
ethernet_vlan_header_t *vlan = (ethernet_vlan_header_t *) (eh + 1);
ethertype = ETHERNET_TYPE_IP4;
l2hdr_sz = 0;
}
else if (VNET_DEVICE_INPUT_NEXT_IP6_INPUT == next_index)
{
ethertype = ETHERNET_TYPE_IP6;
l2hdr_sz = 0;
}
else
{
/* default to ethernet */
ethernet_header_t *eh = (ethernet_header_t *) b0->data;
ethertype = clib_net_to_host_u16 (eh->type);
l2hdr_sz = sizeof (ethernet_header_t);
ethertype = clib_net_to_host_u16 (vlan->type);
l2hdr_sz += sizeof (*vlan);
if (ethertype == ETHERNET_TYPE_VLAN)
if (ethernet_frame_is_tagged (ethertype))
{
vlan++;
ethernet_vlan_header_t *vlan =
(ethernet_vlan_header_t *) (eh + 1);
ethertype = clib_net_to_host_u16 (vlan->type);
l2hdr_sz += sizeof (*vlan);
if (ethertype == ETHERNET_TYPE_VLAN)
{
vlan++;
ethertype = clib_net_to_host_u16 (vlan->type);
l2hdr_sz += sizeof (*vlan);
}
}
}
@ -1570,8 +1598,7 @@ fill_buffer_offload_flags (vlib_main_t *vm, u32 *buffers, u32 n_buffers,
if (PREDICT_TRUE (ethertype == ETHERNET_TYPE_IP4))
{
ip4_header_t *ip4 =
(ip4_header_t *) (vlib_buffer_get_current (b0) + l2hdr_sz);
ip4_header_t *ip4 = (ip4_header_t *) (b0->data + l2hdr_sz);
vnet_buffer (b0)->l4_hdr_offset = l2hdr_sz + ip4_header_bytes (ip4);
l4_proto = ip4->protocol;
b0->flags |=
@ -1583,8 +1610,7 @@ fill_buffer_offload_flags (vlib_main_t *vm, u32 *buffers, u32 n_buffers,
}
else if (PREDICT_TRUE (ethertype == ETHERNET_TYPE_IP6))
{
ip6_header_t *ip6 =
(ip6_header_t *) (vlib_buffer_get_current (b0) + l2hdr_sz);
ip6_header_t *ip6 = (ip6_header_t *) (b0->data + l2hdr_sz);
vnet_buffer (b0)->l4_hdr_offset = l2hdr_sz + sizeof (ip6_header_t);
/* FIXME IPv6 EH traversal */
l4_proto = ip6->protocol;
@ -1604,8 +1630,7 @@ fill_buffer_offload_flags (vlib_main_t *vm, u32 *buffers, u32 n_buffers,
{
b0->flags |= VNET_BUFFER_F_GSO;
tcp_header_t *tcp =
(tcp_header_t *) (vlib_buffer_get_current (b0) +
vnet_buffer (b0)->l4_hdr_offset);
(tcp_header_t *) (b0->data + vnet_buffer (b0)->l4_hdr_offset);
vnet_buffer2 (b0)->gso_l4_hdr_sz = tcp_header_bytes (tcp);
vnet_buffer2 (b0)->gso_size = gso_size;
}
@ -1723,7 +1748,11 @@ pg_generate_packets (vlib_node_runtime_t * node,
if (pi->gso_enabled || (s->buffer_flags & VNET_BUFFER_F_OFFLOAD))
{
fill_buffer_offload_flags (vm, to_next, n_this_frame,
/* we use s->next_index and not next_index on purpose here: we want
* the original node set by the user (typically ethernet-input,
* ip4-input or ip6-input) whereas next_index can be overwritten by
* device-input features */
fill_buffer_offload_flags (vm, s->next_index, to_next, n_this_frame,
s->buffer_oflags, pi->gso_enabled,
pi->gso_size);
}
@ -1731,9 +1760,8 @@ pg_generate_packets (vlib_node_runtime_t * node,
n_trace = vlib_get_trace_count (vm, node);
if (PREDICT_FALSE (n_trace > 0))
{
n_trace =
pg_input_trace (pg, node, s - pg->streams, next_index, to_next,
n_this_frame, n_trace);
n_trace = pg_input_trace (pg, node, s - pg->streams, next_index,
to_next, n_this_frame, n_trace);
vlib_set_trace_count (vm, node, n_trace);
}
n_packets_to_generate -= n_this_frame;

1
src/vnet/pg/output.c
View File

@ -77,6 +77,7 @@ pg_output (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
if (b->flags & VLIB_BUFFER_IS_TRACED)
{
pg_output_trace_t *t = vlib_add_trace (vm, node, b, sizeof (*t));
t->mode = pif->mode;
t->buffer_index = bi0;
clib_memcpy_fast (&t->buffer, b,
sizeof (b[0]) - sizeof (b->pre_data));

30
src/vnet/pg/pg.h
View File

@ -348,6 +348,29 @@ pg_intf_mode_to_pcap_packet_type (pg_interface_mode_t mode)
return PCAP_PACKET_TYPE_ethernet;
}
#define foreach_pg_interface_flags \
_ (CSUM_OFFLOAD, 0) \
_ (GSO, 1) \
_ (GRO_COALESCE, 2)
typedef enum
{
#define _(a, b) PG_INTERFACE_FLAG_##a = (1 << b),
foreach_pg_interface_flags
#undef _
} pg_interface_flags_t;
typedef struct
{
u32 if_id;
pg_interface_mode_t mode;
pg_interface_flags_t flags;
u32 gso_size;
mac_address_t hw_addr;
u8 hw_addr_set;
int rv;
} pg_interface_args_t;
typedef struct
{
/* TX lock */
@ -359,6 +382,8 @@ typedef struct
/* Identifies stream for this interface. */
u32 id;
mac_address_t hw_addr;
u8 coalesce_enabled;
gro_flow_table_t *flow_table;
u8 gso_enabled;
@ -425,9 +450,7 @@ void pg_interface_enable_disable_coalesce (pg_interface_t * pi, u8 enable,
u32 tx_node_index);
/* Find/create free packet-generator interface index. */
u32 pg_interface_add_or_get (pg_main_t *pg, u32 stream_index, u8 gso_enabled,
u32 gso_size, u8 coalesce_enabled,
pg_interface_mode_t mode);
u32 pg_interface_add_or_get (pg_main_t *pg, pg_interface_args_t *args);
int pg_interface_delete (u32 sw_if_index);
@ -459,6 +482,7 @@ clib_error_t *pg_capture (pg_capture_args_t * a);
typedef struct
{
pg_interface_mode_t mode;
u32 buffer_index;
vlib_buffer_t buffer;
}

39
src/vnet/pg/pg_api.c
View File

@ -33,11 +33,24 @@ vl_api_pg_create_interface_t_handler (vl_api_pg_create_interface_t * mp)
{
vl_api_pg_create_interface_reply_t *rmp;
int rv = 0;
u32 pg_if_id = ~0;
pg_main_t *pg = &pg_main;
u32 pg_if_id =
pg_interface_add_or_get (pg, ntohl (mp->interface_id), mp->gso_enabled,
ntohl (mp->gso_size), 0, PG_MODE_ETHERNET);
pg_interface_args_t args = { 0 };
args.mode = PG_MODE_ETHERNET;
args.gso_size = 0;
args.hw_addr_set = 0;
args.flags = 0;
args.if_id = ntohl (mp->interface_id);
if (mp->gso_enabled)
{
args.flags = PG_INTERFACE_FLAG_GSO;
args.gso_size = ntohl (mp->gso_size);
}
pg_if_id = pg_interface_add_or_get (pg, &args);
pg_interface_t *pi = pool_elt_at_index (pg->interfaces, pg_if_id);
REPLY_MACRO2(VL_API_PG_CREATE_INTERFACE_REPLY,
@ -51,11 +64,25 @@ vl_api_pg_create_interface_v2_t_handler (vl_api_pg_create_interface_v2_t *mp)
{
vl_api_pg_create_interface_v2_reply_t *rmp;
int rv = 0;
u32 pg_if_id = ~0;
pg_main_t *pg = &pg_main;
u32 pg_if_id =
pg_interface_add_or_get (pg, ntohl (mp->interface_id), mp->gso_enabled,
ntohl (mp->gso_size), 0, (u8) mp->mode);
pg_interface_args_t args = { 0 };
args.mode = (pg_interface_mode_t) mp->mode;
args.gso_size = 0;
args.hw_addr_set = 0;
args.flags = 0;
args.if_id = ntohl (mp->interface_id);
if (mp->gso_enabled)
{
args.flags = PG_INTERFACE_FLAG_GSO;
args.gso_size = ntohl (mp->gso_size);
}
pg_if_id = pg_interface_add_or_get (pg, &args);
pg_interface_t *pi = pool_elt_at_index (pg->interfaces, pg_if_id);
REPLY_MACRO2 (VL_API_PG_CREATE_INTERFACE_V2_REPLY,

74
src/vnet/pg/stream.c
View File

@ -105,9 +105,16 @@ format_pg_output_trace (u8 * s, va_list * va)
s = format (s, "%Ubuffer 0x%x: %U", format_white_space, indent,
t->buffer_index, format_vnet_buffer_no_chain, &t->buffer);
s = format (s, "\n%U%U", format_white_space, indent,
format_ethernet_header_with_length, t->buffer.pre_data,
sizeof (t->buffer.pre_data));
if (t->mode == PG_MODE_IP4)
s = format (s, "\n%U%U", format_white_space, indent, format_ip4_header,
t->buffer.pre_data, sizeof (t->buffer.pre_data));
else if (t->mode == PG_MODE_IP6)
s = format (s, "\n%U%U", format_white_space, indent, format_ip6_header,
t->buffer.pre_data, sizeof (t->buffer.pre_data));
else
s = format (s, "\n%U%U", format_white_space, indent,
format_ethernet_header_with_length, t->buffer.pre_data,
sizeof (t->buffer.pre_data));
return s;
}
@ -245,18 +252,15 @@ VNET_HW_INTERFACE_CLASS (pg_tun_hw_interface_class) = {
};
u32
pg_interface_add_or_get (pg_main_t *pg, u32 if_id, u8 gso_enabled,
u32 gso_size, u8 coalesce_enabled,
pg_interface_mode_t mode)
pg_interface_add_or_get (pg_main_t *pg, pg_interface_args_t *args)
{
vnet_main_t *vnm = vnet_get_main ();
vlib_main_t *vm = vlib_get_main ();
pg_interface_t *pi;
vnet_hw_interface_t *hi;
uword *p;
u32 i;
p = hash_get (pg->if_index_by_if_id, if_id);
p = hash_get (pg->if_index_by_if_id, args->if_id);
if (p)
{
@ -264,32 +268,26 @@ pg_interface_add_or_get (pg_main_t *pg, u32 if_id, u8 gso_enabled,
}
else
{
vnet_eth_interface_registration_t eir = {};
u8 hw_addr[6];
f64 now = vlib_time_now (vm);
u32 rnd;
pool_get (pg->interfaces, pi);
i = pi - pg->interfaces;
rnd = (u32) (now * 1e6);
rnd = random_u32 (&rnd);
clib_memcpy_fast (hw_addr + 2, &rnd, sizeof (rnd));
hw_addr[0] = 2;
hw_addr[1] = 0xfe;
pi->id = if_id;
pi->mode = mode;
pi->id = args->if_id;
pi->mode = args->mode;
switch (pi->mode)
{
case PG_MODE_ETHERNET:
eir.dev_class_index = pg_dev_class.index;
eir.dev_instance = i;
eir.address = hw_addr;
eir.cb.flag_change = pg_eth_flag_change;
pi->hw_if_index = vnet_eth_register_interface (vnm, &eir);
break;
{
vnet_eth_interface_registration_t eir = { 0 };
if (!args->hw_addr_set)
ethernet_mac_address_generate (args->hw_addr.bytes);
clib_memcpy (pi->hw_addr.bytes, args->hw_addr.bytes, 6);
eir.dev_class_index = pg_dev_class.index;
eir.dev_instance = i;
eir.address = pi->hw_addr.bytes;
eir.cb.flag_change = pg_eth_flag_change;
pi->hw_if_index = vnet_eth_register_interface (vnm, &eir);
break;
}
case PG_MODE_IP4:
case PG_MODE_IP6:
pi->hw_if_index = vnet_register_interface (
@ -297,19 +295,19 @@ pg_interface_add_or_get (pg_main_t *pg, u32 if_id, u8 gso_enabled,
break;
}
hi = vnet_get_hw_interface (vnm, pi->hw_if_index);
if (gso_enabled)
if (args->flags & PG_INTERFACE_FLAG_GSO)
{
vnet_hw_if_set_caps (vnm, pi->hw_if_index, VNET_HW_IF_CAP_TCP_GSO);
pi->gso_enabled = 1;
pi->gso_size = gso_size;
if (coalesce_enabled)
pi->gso_size = args->gso_size;
if (args->flags & PG_INTERFACE_FLAG_GRO_COALESCE)
{
pg_interface_enable_disable_coalesce (pi, 1, hi->tx_node_index);
}
}
pi->sw_if_index = hi->sw_if_index;
hash_set (pg->if_index_by_if_id, if_id, i);
hash_set (pg->if_index_by_if_id, pi->id, i);
vec_validate (pg->if_index_by_sw_if_index, hi->sw_if_index);
pg->if_index_by_sw_if_index[hi->sw_if_index] = i;
@ -585,10 +583,16 @@ pg_stream_add (pg_main_t * pg, pg_stream_t * s_init)
vec_resize (s->buffer_indices, n);
}
pg_interface_args_t args = {
.if_id = s->if_id,
.mode = PG_MODE_ETHERNET,
.flags = 0, /* gso_enabled and coalesce_enabled */
.gso_size = 0, /* gso_size */
.hw_addr_set = 0, /* mac address set */
};
/* Find an interface to use. */
s->pg_if_index = pg_interface_add_or_get (
pg, s->if_id, 0 /* gso_enabled */, 0 /* gso_size */,
0 /* coalesce_enabled */, PG_MODE_ETHERNET);
s->pg_if_index = pg_interface_add_or_get (pg, &args);
if (s->sw_if_index[VLIB_RX] == ~0)
{

159
test/test_pg_stream.py
View File

@ -1,6 +1,8 @@
#!/usr/bin/env python3
import unittest
import time
import re
from scapy.packet import Raw
from scapy.layers.l2 import Ether
@ -50,16 +52,20 @@ class TestPgStream(VppTestCase):
count = str(count)
cmds = [
"clear trace",
"trace add pg-input 1000",
"packet-generator new {{\n"
" name pg0-stream\n"
" name pg0-pg1-stream\n"
" limit {count}\n"
" node ethernet-input\n"
" source pg0\n"
" rate {rate}\n"
" size {packet_size}+{packet_size}\n"
" buffer-flags ip4 offload\n"
" buffer-offload-flags offload-ip-cksum offload-udp-cksum\n"
" data {{\n"
" IP4: {src_mac} -> 00:02:03:04:05:06\n"
" UDP: 192.168.20.20 -> 192.168.10.100\n"
" IP4: {src_mac} -> {dst_mac}\n"
" UDP: {src} -> {dst}\n"
" UDP: 1234 -> 4321\n"
" incrementing 100\n"
" }}\n"
@ -67,11 +73,79 @@ class TestPgStream(VppTestCase):
count=count,
rate=rate,
packet_size=packet_size,
src_mac=self.pg0.local_mac,
src_mac=self.pg0.remote_mac,
dst_mac=self.pg0.local_mac,
src=self.pg0.remote_ip4,
dst=self.pg1.remote_ip4,
),
"packet-generator new {{\n"
" name pg0-pg2-stream\n"
" limit {count}\n"
" node ethernet-input\n"
" source pg0\n"
" rate {rate}\n"
" size {packet_size}+{packet_size}\n"
" buffer-flags ip6 offload\n"
" buffer-offload-flags offload-udp-cksum\n"
" data {{\n"
" IP6: {src_mac} -> {dst_mac}\n"
" UDP: {src} -> {dst}\n"
" UDP: 1234 -> 4321\n"
" incrementing 100\n"
" }}\n"
"}}\n".format(
count=count,
rate=rate,
packet_size=packet_size,
src_mac=self.pg0.remote_mac,
dst_mac=self.pg0.local_mac,
src=self.pg0.remote_ip6,
dst=self.pg2.remote_ip6,
),
"packet-generator new {{\n"
" name pg1-pg0-stream\n"
" limit {count}\n"
" node ip4-input\n"
" source pg1\n"
" rate {rate}\n"
" size {packet_size}+{packet_size}\n"
" buffer-flags ip4 offload\n"
" buffer-offload-flags offload-ip-cksum offload-udp-cksum\n"
" data {{\n"
" UDP: {src} -> {dst}\n"
" UDP: 1234 -> 4321\n"
" incrementing 100\n"
" }}\n"
"}}\n".format(
count=count,
rate=rate,
packet_size=packet_size,
src=self.pg1.remote_ip4,
dst=self.pg0.remote_ip4,
),
"packet-generator new {{\n"
" name pg2-pg0-stream\n"
" limit {count}\n"
" node ip6-input\n"
" source pg2\n"
" rate {rate}\n"
" size {packet_size}+{packet_size}\n"
" buffer-flags ip6 offload\n"
" buffer-offload-flags offload-udp-cksum\n"
" data {{\n"
" UDP: {src} -> {dst}\n"
" UDP: 1234 -> 4321\n"
" incrementing 100\n"
" }}\n"
"}}\n".format(
count=count,
rate=rate,
packet_size=packet_size,
src=self.pg2.remote_ip6,
dst=self.pg0.remote_ip6,
),
"packet-generator enable",
"packet-generator disable",
"packet-generator delete pg0-stream",
"show error",
]
for cmd in cmds:
@ -81,6 +155,79 @@ class TestPgStream(VppTestCase):
self.logger.info(cmd + " FAIL reply " + r.reply)
else:
self.logger.info(cmd + " FAIL retval " + str(r.retval))
self.assertTrue(r.retval == 0)
deadline = time.time() + 30
while self.vapi.cli("show packet-generator").find("Yes") != -1:
self.sleep(0.01) # yield
if time.time() > deadline:
self.logger.error("Timeout waiting for pg to stop")
break
r = self.vapi.cli_return_response("show trace")
self.assertTrue(r.retval == 0)
self.assertTrue(hasattr(r, "reply"))
rv = r.reply
packets = rv.split("\nPacket ")
for packet in enumerate(packets, start=1):
match = re.search(r"stream\s+([\w-]+)", packet[1])
if match:
stream_name = match.group(1)
else:
continue
if stream_name == "pg0-pg1-stream":
look_here = packet[1].find("ethernet-input")
self.assertNotEqual(look_here, -1)
search_string = "ip4 offload-ip-cksum offload-udp-cksum l2-hdr-offset 0 l3-hdr-offset 14 l4-hdr-offset 34"
look_here = packet[1].find(search_string)
self.assertNotEqual(look_here, -1)
search_string = "ip4 l2-hdr-offset 0 l3-hdr-offset 14 l4-hdr-offset 34"
look_here = packet[1].find(search_string)
self.assertNotEqual(look_here, -1)
elif stream_name == "pg0-pg2-stream":
look_here = packet[1].find("ethernet-input")
self.assertNotEqual(look_here, -1)
search_string = "ip6 offload-udp-cksum l2-hdr-offset 0 l3-hdr-offset 14 l4-hdr-offset 54"
look_here = packet[1].find(search_string)
self.assertNotEqual(look_here, -1)
search_string = "ip6 l2-hdr-offset 0 l3-hdr-offset 14 l4-hdr-offset 54"
look_here = packet[1].find(search_string)
self.assertNotEqual(look_here, -1)
elif stream_name == "pg1-pg0-stream":
look_here = packet[1].find("ethernet-input")
self.assertEqual(look_here, -1)
look_here = packet[1].find("ip4-input")
self.assertNotEqual(look_here, -1)
search_string = "ip4 offload-ip-cksum offload-udp-cksum l2-hdr-offset 0 l3-hdr-offset 0 l4-hdr-offset 20"
look_here = packet[1].find(search_string)
self.assertNotEqual(look_here, -1)
search_string = "ip4 l2-hdr-offset 0 l3-hdr-offset 0 l4-hdr-offset 20"
look_here = packet[1].find(search_string)
self.assertNotEqual(look_here, -1)
elif stream_name == "pg2-pg0-stream":
look_here = packet[1].find("ethernet-input")
self.assertEqual(look_here, -1)
look_here = packet[1].find("ip6-input")
self.assertNotEqual(look_here, -1)
search_string = "ip6 offload-udp-cksum l2-hdr-offset 0 l3-hdr-offset 0 l4-hdr-offset 40"
look_here = packet[1].find(search_string)
self.assertNotEqual(look_here, -1)
search_string = "ip6 l2-hdr-offset 0 l3-hdr-offset 0 l4-hdr-offset 40"
look_here = packet[1].find(search_string)
self.assertNotEqual(look_here, -1)
self.logger.info(self.vapi.cli("packet-generator disable"))
self.logger.info(self.vapi.cli("packet-generator delete pg0-pg1-stream"))
self.logger.info(self.vapi.cli("packet-generator delete pg0-pg2-stream"))
self.logger.info(self.vapi.cli("packet-generator delete pg1-pg0-stream"))
self.logger.info(self.vapi.cli("packet-generator delete pg2-pg0-stream"))
r = self.vapi.cli_return_response("show buffers")
self.assertTrue(r.retval == 0)
self.assertTrue(hasattr(r, "reply"))
rv = r.reply
used = int(rv.strip().split("\n")[-1].split()[-1])
self.assertEqual(used, 0)
def test_pg_stream(self):
"""PG Stream testing"""