/*
* 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.
*/
#include <stn/stn.h>
#include <vnet/plugin/plugin.h>
#include <vpp/app/version.h>
#include <vnet/ip/format.h>
#include <vnet/ethernet/packet.h>
#include <vnet/udp/udp.h>
#include <vnet/tcp/tcp.h>
stn_main_t stn_main;
static vlib_node_registration_t stn_ip4_punt;
static vlib_node_registration_t stn_ip6_punt;
static u8 stn_hw_addr_local[6] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x01};
static u8 stn_hw_addr_dst[6] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x02};
static ethernet_header_t stn_ip4_ethernet_header = {};
static ethernet_header_t stn_ip6_ethernet_header = {};
typedef struct {
clib_bihash_kv_16_8_t kv;
} stn_ip46_punt_trace_t;
static u8 *
format_stn_rule (u8 * s, va_list * args)
{
stn_rule_t *r = va_arg (*args, stn_rule_t *);
stn_main_t *stn = &stn_main;
u32 indent = format_get_indent (s);
u32 node_index = ip46_address_is_ip4(&r->address)?stn_ip4_punt.index:stn_ip6_punt.index;
vlib_node_t *next_node = vlib_get_next_node(vlib_get_main(), node_index, r->next_node_index);
s = format (s, "rule_index: %d\n", r - stn->rules);
s = format (s, "%Uaddress: %U\n", format_white_space, indent,
format_ip46_address, &r->address, IP46_TYPE_ANY);
s = format (s, "%Uiface: %U (%d)\n", format_white_space, indent,
format_vnet_sw_if_index_name, vnet_get_main(), r->sw_if_index,
r->sw_if_index);
s = format (s, "%Unext_node: %s (%d)", format_white_space, indent,
next_node->name, next_node->index);
return s;
}
static_always_inline u8 *
format_stn_ip46_punt_trace (u8 * s, va_list * args, u8 is_ipv4)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
stn_ip46_punt_trace_t *t = va_arg (*args, stn_ip46_punt_trace_t *);
u32 indent = format_get_indent (s);
s = format (s, "dst_address: %U\n", format_ip46_address,
(ip46_address_t *)t->kv.key, IP46_TYPE_ANY);
if (t->kv.value == ~(0L))
{
s = format (s, "%Urule: none", format_white_space, indent);
}
else
{
s = format (s, "%Urule:\n%U%U", format_white_space, indent,
format_white_space, indent + 2,
format_stn_rule, &stn_main.rules[t->kv.value]);
}
return s;
}
typedef enum
{
STN_IP_PUNT_DROP,
STN_IP_PUNT_N_NEXT,
} stn_ip_punt_next_t;
static_always_inline uword
stn_ip46_punt_fn (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame,
u8 is_ipv4)
{
u32 n_left_from, *from, next_index, *to_next, n_left_to_next;
stn_main_t *stn = &stn_main;
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
next_index = node->cached_next_index;
while (n_left_from > 0)
{
vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
/* Single loop */
while (n_left_from > 0 && n_left_to_next > 0)
{
u32 pi0;
vlib_buffer_t *p0;
clib_bihash_kv_16_8_t kv;
u32 next0 = STN_IP_PUNT_DROP;
pi0 = to_next[0] = from[0];
from += 1;
n_left_from -= 1;
to_next += 1;
n_left_to_next -= 1;
p0 = vlib_get_buffer (vm, pi0);
if (is_ipv4)
{
ip4_header_t *hdr = (ip4_header_t *) vlib_buffer_get_current(p0);
ip46_address_set_ip4((ip46_address_t *)kv.key, &hdr->dst_address);
}
else
{
ip6_header_t *hdr = (ip6_header_t *) vlib_buffer_get_current(p0);
kv.key[0] = hdr->dst_address.as_u64[0];
kv.key[1] = hdr->dst_address.as_u64[1];
}
kv.value = ~(0L);
clib_bihash_search_inline_16_8 (&stn->rule_by_address_table, &kv);
if (kv.value != ~(0L))
{
ethernet_header_t *eth;
stn_rule_t *r = &stn->rules[kv.value];
vnet_buffer(p0)->sw_if_index[VLIB_TX] = r->sw_if_index;
next0 = r->next_node_index;
vlib_buffer_advance(p0, -sizeof(*eth));
eth = (ethernet_header_t *) vlib_buffer_get_current(p0);
if (is_ipv4)
clib_memcpy(eth, &stn_ip4_ethernet_header, sizeof(*eth));
else
clib_memcpy(eth, &stn_ip6_ethernet_header, sizeof(*eth));
}
else
{
vnet_feature_next (&next0, p0);
}
if (PREDICT_FALSE (p0->flags & VLIB_BUFFER_IS_TRACED))
{
stn_ip46_punt_trace_t *tr =
vlib_add_trace (vm, node, p0, sizeof (*tr));
tr->kv = kv;
}
vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
n_left_to_next, pi0, next0);
}
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
return frame->n_vectors;
}
#define foreach_stn_ip_punt_error \
_(NONE, "no error")
typedef enum {
#define _(sym,str) STN_IP_punt_ERROR_##sym,
foreach_stn_ip_punt_error
#undef _
STN_IP_PUNT_N_ERROR,
} ila_error_t;
static char *stn_ip_punt_error_strings[] = {
#define _(sym,string) string,
foreach_stn_ip_punt_error
#undef _
};
u8 *
format_stn_ip6_punt_trace (u8 * s, va_list * args)
{
return format_stn_ip46_punt_trace (s, args, 0);
}
static uword
stn_ip6_punt_fn (vlib_main_t * vm,
vlib_node_runtime_t * node, vlib_frame_t * frame)
{
return stn_ip46_punt_fn(vm, node, frame, 0);
}
/** *INDENT-OFF* */
VLIB_REGISTER_NODE (stn_ip6_punt, static) =
{
.function = stn_ip6_punt_fn,
.name = "stn-ip6-punt",
.vector_size = sizeof (u32),
.format_trace = format_stn_ip6_punt_trace,
.n_errors = STN_IP_PUNT_N_ERROR,
.error_strings = stn_ip_punt_error_strings,
.n_next_nodes = STN_IP_PUNT_N_NEXT,
.next_nodes =
{
[STN_IP_PUNT_DROP] = "error-drop"
},
};
VNET_FEATURE_INIT (stn_ip6_punt_feat_node, static) = {
.arc_name = "ip6-punt",
.node_name = "stn-ip6-punt",
.runs_before = VNET_FEATURES("ip6-punt-redirect"),
};
/** *INDENT-ON* */
u8 *
format_stn_ip4_punt_trace (u8 * s, va_list * args)
{
return format_stn_ip46_punt_trace (s, args, 1);
}
static uword
stn_ip4_punt_fn (vlib_main_t * vm,
vlib_node_runtime_t * node, vlib_frame_t * frame)
{
return stn_ip46_punt_fn(vm, node, frame, 1);
}
/** *INDENT-OFF* */
VLIB_REGISTER_NODE (stn_ip4_punt, static) =
{
.function = stn_ip4_punt_fn,
.name = "stn-ip4-punt",
.vector_size = sizeof (u32),
.format_trace = format_stn_ip4_punt_trace,
.n_errors = STN_IP_PUNT_N_ERROR,
.error_strings = stn_ip_punt_error_strings,
.n_next_nodes = STN_IP_PUNT_N_NEXT,
.next_nodes =
{
[STN_IP_PUNT_DROP] = "error-drop",
},
};
VNET_FEATURE_INIT (stn_ip4_punt_feat_node, static) = {
.arc_name = "ip4-punt",
.node_name = "stn-ip4-punt",
.runs_before = VNET_FEATURES("ip4-punt-redirect"),
};
/** *INDENT-ON* */
clib_error_t *
stn_init (vlib_main_t * vm)
{
stn_main_t *stn = &stn_main;
stn->rules = 0;
clib_bihash_init_16_8(&stn->rule_by_address_table, "stn addresses",
1024, 1<<20);
clib_memcpy(stn_ip4_ethernet_header.dst_address, stn_hw_addr_dst, 6);
clib_memcpy(stn_ip4_ethernet_header.src_address, stn_hw_addr_local, 6);
stn_ip4_ethernet_header.type = clib_host_to_net_u16(ETHERNET_TYPE_IP4);
clib_memcpy(stn_ip6_ethernet_header.dst_address, stn_hw_addr_dst, 6);
clib_memcpy(stn_ip6_ethernet_header.src_address, stn_hw_addr_local, 6);
stn_ip6_ethernet_header.type = clib_host_to_net_u16(ETHERNET_TYPE_IP6);
return stn_api_init (vm, stn);
return NULL;
}
VLIB_INIT_FUNCTION (stn_init);
/* *INDENT-OFF* */
VLIB_PLUGIN_REGISTER () = {
.version = VPP_BUILD_VER,
.description = "VPP Steals the NIC for Container integration",
};
/* *INDENT-ON* */
int stn_rule_add_del (stn_rule_add_del_args_t *args)
{
vnet_main_t *vnm = vnet_get_main();
vlib_main_t *vm = vlib_get_main();
stn_main_t *stn = &stn_main;
stn_rule_t *r = NULL;
clib_bihash_kv_16_8_t kv;
kv.key[0] = args->address.as_u64[0];
kv.key[1] = args->address.as_u64[1];
if (clib_bihash_search_inline_16_8 (&stn->rule_by_address_table, &kv) == 0)
{
r = &stn->rules[kv.value];
}
else if (!args->del)
{
pool_get(stn->rules, r);
kv.value = r - stn->rules;
clib_bihash_add_del_16_8(&stn->rule_by_address_table, &kv, 1);
r->address = args->address;
stn->n_rules++;
if (stn->n_rules == 1)
{
vnet_feature_enable_disable("ip6-punt", "stn-ip6-punt",
0, 1, 0, 0);
vnet_feature_enable_disable("ip4-punt", "stn-ip4-punt",
0, 1, 0, 0);
udp_punt_unknown(vm, 0, 1);
udp_punt_unknown(vm, 1, 1);
tcp_punt_unknown(vm, 0, 1);
tcp_punt_unknown(vm, 1, 1);
}
}
if (!args->del)
{
/* Getting output node and adding it as next */
u32 output_node_index =
vnet_tx_node_index_for_sw_interface(vnm, args->sw_if_index);
u32 node_index = ip46_address_is_ip4(&args->address)?
stn_ip4_punt.index : stn_ip6_punt.index;
r->sw_if_index = args->sw_if_index;
r->next_node_index =
vlib_node_add_next(vm, node_index, output_node_index);
@media only all and (prefers-color-scheme: dark) {
.highlight .hll { background-color: #49483e }
.highlight .c { color: #75715e } /* Comment */
.highlight .err { color: #960050; background-color: #1e0010 } /* Error */
.highlight .k { color: #66d9ef } /* Keyword */
.highlight .l { color: #ae81ff } /* Literal */
.highlight .n { color: #f8f8f2 } /* Name */
.highlight .o { color: #f92672 } /* Operator */
.highlight .p { color: #f8f8f2 } /* Punctuation */
.highlight .ch { color: #75715e } /* Comment.Hashbang */
.highlight .cm { color: #75715e } /* Comment.Multiline */
.highlight .cp { color: #75715e } /* Comment.Preproc */
.highlight .cpf { color: #75715e } /* Comment.PreprocFile */
.highlight .c1 { color: #75715e } /* Comment.Single */
.highlight .cs { color: #75715e } /* Comment.Special */
.highlight .gd { color: #f92672 } /* Generic.Deleted */
.highlight .ge { font-style: italic } /* Generic.Emph */
.highlight .gi { color: #a6e22e } /* Generic.Inserted */
.highlight .gs { font-weight: bold } /* Generic.Strong */
.highlight .gu { color: #75715e } /* Generic.Subheading */
.highlight .kc { color: #66d9ef } /* Keyword.Constant */
.highlight .kd { color: #66d9ef } /* Keyword.Declaration */
.highlight .kn { color: #f92672 } /* Keyword.Namespace */
.highlight .kp { color: #66d9ef } /* Keyword.Pseudo */
.highlight .kr { color: #66d9ef } /* Keyword.Reserved */
.highlight .kt { color: #66d9ef } /* Keyword.Type */
.highlight .ld { color: #e6db74 } /* Literal.Date */
.highlight .m { color: #ae81ff } /* Literal.Number */
.highlight .s { color: #e6db74 } /* Literal.String */
.highlight .na { color: #a6e22e } /* Name.Attribute */
.highlight .nb { color: #f8f8f2 } /* Name.Builtin */
.highlight .nc { color: #a6e22e } /* Name.Class */
.highlight .no { color: #66d9ef } /* Name.Constant */
.highlight .nd { color: #a6e22e } /* Name.Decorator */
.highlight .ni { color: #f8f8f2 } /* Name.Entity */
.highlight .ne { color: #a6e22e } /* Name.Exception */
.highlight .nf { color: #a6e22e } /* Name.Function */
.highlight .nl { color: #f8f8f2 } /* Name.Label */
.highlight .nn { color: #f8f8f2 } /* Name.Namespace */
.highlight .nx { color: #a6e22e } /* Name.Other */
.highlight .py { color: #f8f8f2 } /* Name.Property */
.highlight .nt { color: #f92672 } /* Name.Tag */
.highlight .nv { color: #f8f8f2 } /* Name.Variable */
.highlight .ow { color: #f92672 } /* Operator.Word */
.highlight .w { color: #f8f8f2 } /* Text.Whitespace */
.highlight .mb { color: #ae81ff } /* Literal.Number.Bin */
.highlight .mf { color: #ae81ff } /* Literal.Number.Float */
.highlight .mh { color: #ae81ff } /* Literal.Number.Hex */
.highlight .mi { color: #ae81ff } /* Literal.Number.Integer */
.highlight .mo { color: #ae81ff } /* Literal.Number.Oct */
.highlight .sa { color: #e6db74 } /* Literal.String.Affix */
.highlight .sb { color: #e6db74 } /* Literal.String.Backtick */
.highlight .sc { color: #e6db74 } /* Literal.String.Char */
.highlight .dl { color: #e6db74 } /* Literal.String.Delimiter */
.highlight .sd { color: #e6db74 } /* Literal.String.Doc */
.highlight .s2 { color: #e6db74 } /* Literal.String.Double */
.highlight .se { color: #ae81ff } /* Literal.String.Escape */
.highlight .sh { color: #e6db74 } /* Literal.String.Heredoc */
.highlight .si { color: #e6db74 } /* Literal.String.Interpol */
.highlight .sx { color: #e6db74 } /* Literal.String.Other */
.highlight .sr { color: #e6db74 } /* Literal.String.Regex */
.highlight .s1 { color: #e6db74 } /* Literal.String.Single */
.highlight .ss { color: #e6db74 } /* Literal.String.Symbol */
.highlight .bp { color: #f8f8f2 } /* Name.Builtin.Pseudo */
.highlight .fm { color: #a6e22e } /* Name.Function.Magic */
.highlight .vc { color: #f8f8f2 } /* Name.Variable.Class */
.highlight .vg { color: #f8f8f2 } /* Name.Variable.Global */
.highlight .vi { color: #f8f8f2 } /* Name.Variable.Instance */
.highlight .vm { color: #f8f8f2 } /* Name.Variable.Magic */
.highlight .il { color: #ae81ff } /* Literal.Number.Integer.Long */
}
@media (prefers-color-scheme: light) {
.highlight .hll { background-color: #ffffcc }
.highlight .c { color: #888888 } /* Comment */
.highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */
.highlight .k { color: #008800; font-weight: bold } /* Keyword */
.highlight .ch { color: #888888 } /* Comment.Hashbang */
.highlight .cm { color: #888888 } /* Comment.Multiline */
.highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */
.highlight .cpf { color: #888888 } /* Comment.PreprocFile */
.highlight .c1 { color: #888888 } /* Comment.Single */
.highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */
.highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */
.highlight .ge { font-style: italic } /* Generic.Emph */
.highlight .gr { color: #aa0000 } /* Generic.Error */
.highlight .gh { color: #333333 } /* Generic.Heading */
.highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */
.highlight .go { color: #888888 } /* Generic.Output */
.highlight .gp { color: #555555 } /* Generic.Prompt */
.highlight .gs { font-weight: bold } /* Generic.Strong */
.highlight .gu { color: #666666 } /* Generic.Subheading */
.highlight .gt { color: #aa0000 } /* Generic.Traceback */
.highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */
.highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */
.highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */
.highlight .kp { color: #008800 } /* Keyword.Pseudo */
.highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */
.highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */
.highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */
.highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */
.highlight .na { color: #336699 } /* Name.Attribute */
.highlight .nb { color: #003388 } /* Name.Builtin */
.highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */
.highlight .no { color: #003366; font-weight: bold } /* Name.Constant */
.highlight .nd { color: #555555 } /* Name.Decorator */
.highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */
.highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */
.highlight .nl { color: #336699; font-style: italic } /* Name.Label */
.highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */
.highlight .py { color: #336699; font-weight: bold } /* Name.Property */
.highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */
.highlight .nv { color: #336699 } /* Name.Variable */
.highlight .ow { color: #008800 } /* Operator.Word */
.highlight .w { color: #bbbbbb } /* Text.Whitespace */
.highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */
.highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */
.highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */
.highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */
.highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */
.highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */
.highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */
.highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */
.highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */
.highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */
.highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */
.highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */
.highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */
.highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */
.highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */
.highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */
.highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */
.highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */
.highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */
.highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */
.highlight .vc { color: #336699 } /* Name.Variable.Class */
.highlight .vg { color: #dd7700 } /* Name.Variable.Global */
.highlight .vi { color: #3333bb } /* Name.Variable.Instance */
.highlight .vm { color: #336699 } /* Name.Variable.Magic */
.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */
}
/*
* Copyright (c) 2015 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.
*/
/*
* pg_input.c: buffer generator input
*
* Copyright (c) 2008 Eliot Dresselhaus
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE 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.
*/
/*
* To be honest, the packet generator needs an extreme
* makeover. Two key assumptions which drove the current implementation
* are no longer true. First, buffer managers implement a
* post-TX recycle list. Second, that packet generator performance
* is first-order important.
*/
#include <vlib/vlib.h>
#include <vnet/pg/pg.h>
#include <vnet/vnet.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/feature/feature.h>
#include <vnet/ip/ip4_packet.h>
#include <vnet/ip/ip6_packet.h>
#include <vnet/udp/udp_packet.h>
#include <vnet/devices/devices.h>
#include <vnet/gso/gro_func.h>
static int
validate_buffer_data2 (vlib_buffer_t * b, pg_stream_t * s,
u32 data_offset, u32 n_bytes)
{
u8 *bd, *pd, *pm;
u32 i;
bd = b->data;
pd = s->fixed_packet_data + data_offset;
pm = s->fixed_packet_data_mask + data_offset;
if (pd + n_bytes >= vec_end (s->fixed_packet_data))
n_bytes = (pd < vec_end (s->fixed_packet_data)
? vec_end (s->fixed_packet_data) - pd : 0);
for (i = 0; i < n_bytes; i++)
if ((bd[i] & pm[i]) != pd[i])
break;
if (i >= n_bytes)
return 1;
clib_warning ("buffer %U", format_vnet_buffer, b);
clib_warning ("differ at index %d", i);
clib_warning ("is %U", format_hex_bytes, bd, n_bytes);
clib_warning ("mask %U", format_hex_bytes, pm, n_bytes);
clib_warning ("expect %U", format_hex_bytes, pd, n_bytes);
return 0;
}
static int
validate_buffer_data (vlib_buffer_t * b, pg_stream_t * s)
{
return validate_buffer_data2 (b, s, 0, s->buffer_bytes);
}
always_inline void
set_1 (void *a0,
u64 v0, u64 v_min, u64 v_max, u32 n_bits, u32 is_net_byte_order)
{
ASSERT (v0 >= v_min && v0 <= v_max);
if (n_bits == BITS (u8))
{
((u8 *) a0)[0] = v0;
}
else if (n_bits == BITS (u16))
{
if (is_net_byte_order)
v0 = clib_host_to_net_u16 (v0);
clib_mem_unaligned (a0, u16) = v0;
}
else if (n_bits == BITS (u32))
{
if (is_net_byte_order)
v0 = clib_host_to_net_u32 (v0);
clib_mem_unaligned (a0, u32) = v0;
}
else if (n_bits == BITS (u64))
{
if (is_net_byte_order)
v0 = clib_host_to_net_u64 (v0);
clib_mem_unaligned (a0, u64) = v0;
}
}
always_inline void
set_2 (void *a0, void *a1,
u64 v0, u64 v1,
u64 v_min, u64 v_max,
u32 n_bits, u32 is_net_byte_order, u32 is_increment)
{
ASSERT (v0 >= v_min && v0 <= v_max);
ASSERT (v1 >= v_min && v1 <= (v_max + is_increment));
if (n_bits == BITS (u8))
{
((u8 *) a0)[0] = v0;
((u8 *) a1)[0] = v1;
}
else if (n_bits == BITS (u16))
{
if (is_net_byte_order)
{
v0 = clib_host_to_net_u16 (v0);
v1 = clib_host_to_net_u16 (v1);
}
clib_mem_unaligned (a0, u16) = v0;
clib_mem_unaligned (a1, u16) = v1;
}
else if (n_bits == BITS (u32))
{
if (is_net_byte_order)
{
v0 = clib_host_to_net_u32 (v0);
v1 = clib_host_to_net_u32 (v1);
}
clib_mem_unaligned (a0, u32) = v0;
clib_mem_unaligned (a1, u32) = v1;
}
else if (n_bits == BITS (u64))
{
if (is_net_byte_order)
{
v0 = clib_host_to_net_u64 (v0);
v1 = clib_host_to_net_u64 (v1);
}
clib_mem_unaligned (a0, u64) = v0;
clib_mem_unaligned (a1, u64) = v1;
}
}
static_always_inline void
do_set_fixed (pg_main_t * pg,
pg_stream_t * s,
u32 * buffers,
u32 n_buffers,
u32 n_bits,
u32 byte_offset, u32 is_net_byte_order, u64 v_min, u64 v_max)
{
vlib_main_t *vm = vlib_get_main ();
while (n_buffers >= 4)
{
vlib_buffer_t *b0, *b1, *b2, *b3;
void *a0, *a1;
b0 = vlib_get_buffer (vm, buffers[0]);
b1 = vlib_get_buffer (vm, buffers[1]);
b2 = vlib_get_buffer (vm, buffers[2]);
b3 = vlib_get_buffer (vm, buffers[3]);
buffers += 2;
n_buffers -= 2;
a0 = (void *) b0 + byte_offset;
a1 = (void *) b1 + byte_offset;
CLIB_PREFETCH ((void *) b2 + byte_offset, sizeof (v_min), WRITE);
CLIB_PREFETCH ((void *) b3 + byte_offset, sizeof (v_min), WRITE);
set_2 (a0, a1, v_min, v_min, v_min, v_max, n_bits, is_net_byte_order,
/* is_increment */ 0);
ASSERT (validate_buffer_data (b0, s));
ASSERT (validate_buffer_data (b1, s));
}
while (n_buffers > 0)
{
vlib_buffer_t *b0;
void *a0;
b0 = vlib_get_buffer (vm, buffers[0]);
buffers += 1;
n_buffers -= 1;
a0 = (void *) b0 + byte_offset;
set_1 (a0, v_min, v_min, v_max, n_bits, is_net_byte_order);
ASSERT (validate_buffer_data (b0, s));
}
}
static_always_inline u64
do_set_increment (pg_main_t * pg,
pg_stream_t * s,
u32 * buffers,
u32 n_buffers,
u32 n_bits,
u32 byte_offset,
u32 is_net_byte_order,
u32 want_sum, u64 * sum_result, u64 v_min, u64 v_max, u64 v)
{
vlib_main_t *vm = vlib_get_main ();
u64 sum = 0;
ASSERT (v >= v_min && v <= v_max);
while (n_buffers >= 4)
{
vlib_buffer_t *b0, *b1, *b2, *b3;
void *a0, *a1;
u64 v_old;
b0 = vlib_get_buffer (vm, buffers[0]);
b1 = vlib_get_buffer (vm, buffers[1]);
b2 = vlib_get_buffer (vm, buffers[2]);
b3 = vlib_get_buffer (vm, buffers[3]);
buffers += 2;
n_buffers -= 2;
a0 = (void *) b0 + byte_offset;
a1 = (void *) b1 + byte_offset;
CLIB_PREFETCH ((void *) b2 + byte_offset, sizeof (v_min), WRITE);
CLIB_PREFETCH ((void *) b3 + byte_offset, sizeof (v_min), WRITE);
v_old = v;
v = v_old + 2;
v = v > v_max ? v_min : v;
set_2 (a0, a1,
v_old + 0, v_old + 1, v_min, v_max, n_bits, is_net_byte_order,
/* is_increment */ 1);
if (want_sum)
sum += 2 * v_old + 1;
if (PREDICT_FALSE (v_old + 1 > v_max))
{
if (want_sum)
sum -= 2 * v_old + 1;
v = v_old;
set_1 (a0, v + 0, v_min, v_max, n_bits, is_net_byte_order);
if (want_sum)
sum += v;
v += 1;
v = v > v_max ? v_min : v;
set_1 (a1, v + 0, v_min, v_max, n_bits, is_net_byte_order);
if (want_sum)
sum += v;
v += 1;
}
ASSERT (validate_buffer_data (b0, s));
ASSERT (validate_buffer_data (b1, s));
}
while (n_buffers > 0)
{
vlib_buffer_t *b0;
void *a0;
u64 v_old;
b0 = vlib_get_buffer (vm, buffers[0]);
buffers += 1;
n_buffers -= 1;
a0 = (void *) b0 + byte_offset;
v_old = v;
if (want_sum)
sum += v_old;
v += 1;
v = v > v_max ? v_min : v;
ASSERT (v_old >= v_min && v_old <= v_max);
set_1 (a0, v_old, v_min, v_max, n_bits, is_net_byte_order);
ASSERT (validate_buffer_data (b0, s));
}
if (want_sum)
*sum_result = sum;
return v;
}
static_always_inline void
do_set_random (pg_main_t * pg,
pg_stream_t * s,
u32 * buffers,
u32 n_buffers,
u32 n_bits,
u32 byte_offset,
u32 is_net_byte_order,
u32 want_sum, u64 * sum_result, u64 v_min, u64 v_max)
{
vlib_main_t *vm = vlib_get_main ();
u64 v_diff = v_max - v_min + 1;
u64 r_mask = max_pow2 (v_diff) - 1;
u64 v0, v1;
u64 sum = 0;
void *random_data;
random_data = clib_random_buffer_get_data
(&vm->random_buffer, n_buffers * n_bits / BITS (u8));
v0 = v1 = v_min;
while (n_buffers >= 4)
{
vlib_buffer_t *b0, *b1, *b2, *b3;
void *a0, *a1;
u64 r0 = 0, r1 = 0; /* warnings be gone */
b0 = vlib_get_buffer (vm, buffers[0]);
b1 = vlib_get_buffer (vm, buffers[1]);
b2 = vlib_get_buffer (vm, buffers[2]);
b3 = vlib_get_buffer (vm, buffers[3]);
buffers += 2;
n_buffers -= 2;
a0 = (void *) b0 + byte_offset;
a1 = (void *) b1 + byte_offset;
CLIB_PREFETCH ((void *) b2 + byte_offset, sizeof (v_min), WRITE);
CLIB_PREFETCH ((void *) b3 + byte_offset, sizeof (v_min), WRITE);
switch (n_bits)
{
#define _(n) \
case BITS (u##n): \
{ \
u##n * r = random_data; \
r0 = r[0]; \
r1 = r[1]; \
random_data = r + 2; \
} \
break;
_(8);
_(16);
_(32);
_(64);
#undef _
}
/* Add power of 2 sized random number which may be out of range. */
v0 += r0 & r_mask;
v1 += r1 & r_mask;
/* Twice should be enough to reduce to v_min .. v_max range. */
v0 = v0 > v_max ? v0 - v_diff : v0;
v1 = v1 > v_max ? v1 - v_diff : v1;
v0 = v0 > v_max ? v0 - v_diff : v0;
v1 = v1 > v_max ? v1 - v_diff : v1;
if (want_sum)
sum += v0 + v1;
set_2 (a0, a1, v0, v1, v_min, v_max, n_bits, is_net_byte_order,
/* is_increment */ 0);
ASSERT (validate_buffer_data (b0, s));
ASSERT (validate_buffer_data (b1, s));
}
while (n_buffers > 0)
{
vlib_buffer_t *b0;
void *a0;
u64 r0 = 0; /* warnings be gone */
b0 = vlib_get_buffer (vm, buffers[0]);
buffers += 1;
n_buffers -= 1;
a0 = (void *) b0 + byte_offset;
switch (n_bits)
{
#define _(n) \
case BITS (u##n): \
{ \
u##n * r = random_data; \
r0 = r[0]; \
random_data = r + 1; \
} \
break;
_(8);
_(16);
_(32);
_(64);
#undef _
}
/* Add power of 2 sized random number which may be out of range. */
v0 += r0 & r_mask;
/* Twice should be enough to reduce to v_min .. v_max range. */
v0 = v0 > v_max ? v0 - v_diff : v0;
v0 = v0 > v_max ? v0 - v_diff : v0;
if (want_sum)
sum += v0;
set_1 (a0, v0, v_min, v_max, n_bits, is_net_byte_order);
ASSERT (validate_buffer_data (b0, s));
}
if (want_sum)
*sum_result = sum;
}
#define _(i,t) \
clib_mem_unaligned (a##i, t) = \
clib_host_to_net_##t ((clib_net_to_host_mem_##t (a##i) &~ mask) \
| (v##i << shift))
always_inline void
setbits_1 (void *a0,
u64 v0,
u64 v_min, u64 v_max,
u32 max_bits, u32 n_bits, u64 mask, u32 shift)
{
ASSERT (v0 >= v_min && v0 <= v_max);
if (max_bits == BITS (u8))
((u8 *) a0)[0] = (((u8 *) a0)[0] & ~mask) | (v0 << shift);
else if (max_bits == BITS (u16))
{
_(0, u16);
}
else if (max_bits == BITS (u32))
{
_(0, u32);
}
else if (max_bits == BITS (u64))
{
_(0, u64);
}
}
always_inline void
setbits_2 (void *a0, void *a1,
u64 v0, u64 v1,
u64 v_min, u64 v_max,
u32 max_bits, u32 n_bits, u64 mask, u32 shift, u32 is_increment)
{
ASSERT (v0 >= v_min && v0 <= v_max);
ASSERT (v1 >= v_min && v1 <= v_max + is_increment);
if (max_bits == BITS (u8))
{
((u8 *) a0)[0] = (((u8 *) a0)[0] & ~mask) | (v0 << shift);
((u8 *) a1)[0] = (((u8 *) a1)[0] & ~mask) | (v1 << shift);
}
else if (max_bits == BITS (u16))
{
_(0, u16);
_(1, u16);
}
else if (max_bits == BITS (u32))
{
_(0, u32);
_(1, u32);
}
else if (max_bits == BITS (u64))
{
_(0, u64);
_(1, u64);
}
}
#undef _
static_always_inline void
do_setbits_fixed (pg_main_t * pg,
pg_stream_t * s,
u32 * buffers,
u32 n_buffers,
u32 max_bits,
u32 n_bits,
u32 byte_offset, u64 v_min, u64 v_max, u64 mask, u32 shift)
{
vlib_main_t *vm = vlib_get_main ();
while (n_buffers >= 4)
{
vlib_buffer_t *b0, *b1, *b2, *b3;
void *a0, *a1;
b0 = vlib_get_buffer (vm, buffers[0]);
b1 = vlib_get_buffer (vm, buffers[1]);
b2 = vlib_get_buffer (vm, buffers[2]);
b3 = vlib_get_buffer (vm, buffers[3]);
buffers += 2;
n_buffers -= 2;
a0 = (void *) b0 + byte_offset;
a1 = (void *) b1 + byte_offset;
CLIB_PREFETCH ((void *) b2 + byte_offset, sizeof (v_min), WRITE);
CLIB_PREFETCH ((void *) b3 + byte_offset, sizeof (v_min), WRITE);
setbits_2 (a0, a1,
v_min, v_min, v_min, v_max, max_bits, n_bits, mask, shift,
/* is_increment */ 0);
ASSERT (validate_buffer_data (b0, s));
ASSERT (validate_buffer_data (b1, s));
}
while (n_buffers > 0)
{
vlib_buffer_t *b0;
void *a0;
b0 = vlib_get_buffer (vm, buffers[0]);
buffers += 1;
n_buffers -= 1;
a0 = (void *) b0 + byte_offset;
setbits_1 (a0, v_min, v_min, v_max, max_bits, n_bits, mask, shift);
ASSERT (validate_buffer_data (b0, s));
}
}
static_always_inline u64
do_setbits_increment (pg_main_t * pg,
pg_stream_t * s,
u32 * buffers,
u32 n_buffers,
u32 max_bits,
u32 n_bits,
u32 byte_offset,
u64 v_min, u64 v_max, u64 v, u64 mask, u32 shift)
{
vlib_main_t *vm = vlib_get_main ();
ASSERT (v >= v_min && v <= v_max);
while (n_buffers >= 4)
{
vlib_buffer_t *b0, *b1, *b2, *b3;
void *a0, *a1;
u64 v_old;
b0 = vlib_get_buffer (vm, buffers[0]);
b1 = vlib_get_buffer (vm, buffers[1]);
b2 = vlib_get_buffer (vm, buffers[2]);
b3 = vlib_get_buffer (vm, buffers[3]);
buffers += 2;
n_buffers -= 2;
a0 = (void *) b0 + byte_offset;
a1 = (void *) b1 + byte_offset;
CLIB_PREFETCH ((void *) b2 + byte_offset, sizeof (v_min), WRITE);
CLIB_PREFETCH ((void *) b3 + byte_offset, sizeof (v_min), WRITE);
v_old = v;
v = v_old + 2;
v = v > v_max ? v_min : v;
setbits_2 (a0, a1,
v_old + 0, v_old + 1,
v_min, v_max, max_bits, n_bits, mask, shift,
/* is_increment */ 1);
if (PREDICT_FALSE (v_old + 1 > v_max))
{
v = v_old;
setbits_1 (a0, v + 0, v_min, v_max, max_bits, n_bits, mask, shift);
v += 1;
v = v > v_max ? v_min : v;
setbits_1 (a1, v + 0, v_min, v_max, max_bits, n_bits, mask, shift);
v += 1;
}
ASSERT (validate_buffer_data (b0, s));
ASSERT (validate_buffer_data (b1, s));
}
while (n_buffers > 0)
{
vlib_buffer_t *b0;
void *a0;
u64 v_old;
b0 = vlib_get_buffer (vm, buffers[0]);
buffers += 1;
n_buffers -= 1;
a0 = (void *) b0 + byte_offset;
v_old = v;
v = v_old + 1;
v = v > v_max ? v_min : v;
ASSERT (v_old >= v_min && v_old <= v_max);
setbits_1 (a0, v_old, v_min, v_max, max_bits, n_bits, mask, shift);
ASSERT (validate_buffer_data (b0, s));
}
return v;
}
static_always_inline void
do_setbits_random (pg_main_t * pg,
pg_stream_t * s,
u32 * buffers,
u32 n_buffers,
u32 max_bits,
u32 n_bits,
u32 byte_offset, u64 v_min, u64 v_max, u64 mask, u32 shift)
{
vlib_main_t *vm = vlib_get_main ();
u64 v_diff = v_max - v_min + 1;
u64 r_mask = max_pow2 (v_diff) - 1;
u64 v0, v1;
void *random_data;
random_data = clib_random_buffer_get_data
(&vm->random_buffer, n_buffers * max_bits / BITS (u8));
v0 = v1 = v_min;
while (n_buffers >= 4)
{
vlib_buffer_t *b0, *b1, *b2, *b3;
void *a0, *a1;
u64 r0 = 0, r1 = 0; /* warnings be gone */
b0 = vlib_get_buffer (vm, buffers[0]);
b1 = vlib_get_buffer (vm, buffers[1]);
b2 = vlib_get_buffer (vm, buffers[2]);
b3 = vlib_get_buffer (vm, buffers[3]);
buffers += 2;
n_buffers -= 2;
a0 = (void *) b0 + byte_offset;
a1 = (void *) b1 + byte_offset;
CLIB_PREFETCH ((void *) b2 + byte_offset, sizeof (v_min), WRITE);
CLIB_PREFETCH ((void *) b3 + byte_offset, sizeof (v_min), WRITE);
switch (max_bits)
{
#define _(n) \
case BITS (u##n): \
{ \
u##n * r = random_data; \
r0 = r[0]; \
r1 = r[1]; \
random_data = r + 2; \
} \
break;
_(8);
_(16);
_(32);
_(64);
#undef _
}
/* Add power of 2 sized random number which may be out of range. */
v0 += r0 & r_mask;
v1 += r1 & r_mask;
/* Twice should be enough to reduce to v_min .. v_max range. */
v0 = v0 > v_max ? v0 - v_diff : v0;
v1 = v1 > v_max ? v1 - v_diff : v1;
v0 = v0 > v_max ? v0 - v_diff : v0;
v1 = v1 > v_max ? v1 - v_diff : v1;
setbits_2 (a0, a1, v0, v1, v_min, v_max, max_bits, n_bits, mask, shift,
/* is_increment */ 0);
ASSERT (validate_buffer_data (b0, s));
ASSERT (validate_buffer_data (b1, s));
}
while (n_buffers > 0)
{
vlib_buffer_t *b0;
void *a0;
u64 r0 = 0; /* warnings be gone */
b0 = vlib_get_buffer (vm, buffers[0]);
buffers += 1;
n_buffers -= 1;
a0 = (void *) b0 + byte_offset;
switch (max_bits)
{
#define _(n) \
case BITS (u##n): \
{ \
u##n * r = random_data; \
r0 = r[0]; \
random_data = r + 1; \
} \
break;
_(8);
_(16);
_(32);
_(64);
#undef _
}
/* Add power of 2 sized random number which may be out of range. */
v0 += r0 & r_mask;
/* Twice should be enough to reduce to v_min .. v_max range. */
v0 = v0 > v_max ? v0 - v_diff : v0;
v0 = v0 > v_max ? v0 - v_diff : v0;
setbits_1 (a0, v0, v_min, v_max, max_bits, n_bits, mask, shift);
ASSERT (validate_buffer_data (b0, s));
}
}
static u64
do_it (pg_main_t * pg,
pg_stream_t * s,
u32 * buffers,
u32 n_buffers,
u32 lo_bit, u32 hi_bit,
u64 v_min, u64 v_max, u64 v, pg_edit_type_t edit_type)
{
u32 max_bits, l0, l1, h1, start_bit;
if (v_min == v_max)
edit_type = PG_EDIT_FIXED;
l0 = lo_bit / BITS (u8);
l1 = lo_bit % BITS (u8);
h1 = hi_bit % BITS (u8);
start_bit = l0 * BITS (u8);
max_bits = hi_bit - start_bit;
ASSERT (max_bits <= 64);
#define _(n) \
case (n): \
if (edit_type == PG_EDIT_INCREMENT) \
v = do_set_increment (pg, s, buffers, n_buffers, \
BITS (u##n), \
l0, \
/* is_net_byte_order */ 1, \
/* want sum */ 0, 0, \
v_min, v_max, \
v); \
else if (edit_type == PG_EDIT_RANDOM) \
do_set_random (pg, s, buffers, n_buffers, \
BITS (u##n), \
l0, \
/* is_net_byte_order */ 1, \
/* want sum */ 0, 0, \
v_min, v_max); \
else /* edit_type == PG_EDIT_FIXED */ \
do_set_fixed (pg, s, buffers, n_buffers, \
BITS (u##n), \
l0, \
/* is_net_byte_order */ 1, \
v_min, v_max); \
goto done;
if (l1 == 0 && h1 == 0)
{
switch (max_bits)
{
_(8);
_(16);
_(32);
_(64);
}
}
#undef _
{
u64 mask;
u32 shift = l1;
u32 n_bits = max_bits;
max_bits = clib_max (max_pow2 (n_bits), 8);
mask = ((u64) 1 << (u64) n_bits) - 1;
mask &= ~(((u64) 1 << (u64) shift) - 1);
mask <<= max_bits - n_bits;
shift += max_bits - n_bits;
switch (max_bits)
{
#define _(n) \
case (n): \
if (edit_type == PG_EDIT_INCREMENT) \
v = do_setbits_increment (pg, s, buffers, n_buffers, \
BITS (u##n), n_bits, \
l0, v_min, v_max, v, \
mask, shift); \
else if (edit_type == PG_EDIT_RANDOM) \
do_setbits_random (pg, s, buffers, n_buffers, \
BITS (u##n), n_bits, \
l0, v_min, v_max, \
mask, shift); \
else /* edit_type == PG_EDIT_FIXED */ \
do_setbits_fixed (pg, s, buffers, n_buffers, \
BITS (u##n), n_bits, \
l0, v_min, v_max, \
mask, shift); \
goto done;
_(8);
_(16);
_(32);
_(64);
#undef _
}
}
done:
return v;
}
static void
pg_generate_set_lengths (pg_main_t * pg,
pg_stream_t * s, u32 * buffers, u32 n_buffers)
{
u64 v_min, v_max, length_sum;
pg_edit_type_t edit_type;
v_min = s->min_packet_bytes;
v_max = s->max_packet_bytes;
edit_type = s->packet_size_edit_type;
if (edit_type == PG_EDIT_INCREMENT)
s->last_increment_packet_size
= do_set_increment (pg, s, buffers, n_buffers,
8 * STRUCT_SIZE_OF (vlib_buffer_t, current_length),
STRUCT_OFFSET_OF (vlib_buffer_t, current_length),
/* is_net_byte_order */ 0,
/* want sum */ 1, &length_sum,
v_min, v_max, s->last_increment_packet_size);
else if (edit_type == PG_EDIT_RANDOM)
do_set_random (pg, s, buffers, n_buffers,
8 * STRUCT_SIZE_OF (vlib_buffer_t, current_length),
STRUCT_OFFSET_OF (vlib_buffer_t, current_length),
/* is_net_byte_order */ 0,
/* want sum */ 1, &length_sum,
v_min, v_max);
else /* edit_type == PG_EDIT_FIXED */
{
do_set_fixed (pg, s, buffers, n_buffers,
8 * STRUCT_SIZE_OF (vlib_buffer_t, current_length),
STRUCT_OFFSET_OF (vlib_buffer_t, current_length),
/* is_net_byte_order */ 0,
v_min, v_max);
length_sum = v_min * n_buffers;
}
{
vnet_main_t *vnm = vnet_get_main ();
vnet_interface_main_t *im = &vnm->interface_main;
vnet_sw_interface_t *si =
vnet_get_sw_interface (vnm, s->sw_if_index[VLIB_RX]);
vlib_increment_combined_counter (im->combined_sw_if_counters
+ VNET_INTERFACE_COUNTER_RX,
vlib_get_thread_index (),
si->sw_if_index, n_buffers, length_sum);
}
}
static void
pg_generate_fix_multi_buffer_lengths (pg_main_t * pg,
pg_stream_t * s,
u32 * buffers, u32 n_buffers)
{
vlib_main_t *vm = vlib_get_main ();
pg_buffer_index_t *pbi;
uword n_bytes_left;
static u32 *unused_buffers = 0;
while (n_buffers > 0)
{
vlib_buffer_t *b;
u32 bi;
bi = buffers[0];
b = vlib_get_buffer (vm, bi);
/* Current length here is length of whole packet. */
n_bytes_left = b->current_length;
pbi = s->buffer_indices;
while (1)
{
uword n = clib_min (n_bytes_left, s->buffer_bytes);
b->current_length = n;
n_bytes_left -= n;
if (n_bytes_left > 0)
b->flags |= VLIB_BUFFER_NEXT_PRESENT;
else
b->flags &= ~VLIB_BUFFER_NEXT_PRESENT;
/* Return unused buffers to fifos. */
if (n == 0)
vec_add1 (unused_buffers, bi);
pbi++;
if (pbi >= vec_end (s->buffer_indices))
break;
bi = b->next_buffer;
b = vlib_get_buffer (vm, bi);
}
ASSERT (n_bytes_left == 0);
buffers += 1;
n_buffers -= 1;
}
if (vec_len (unused_buffers) > 0)
{
vlib_buffer_free_no_next (vm, unused_buffers, vec_len (unused_buffers));
_vec_len (unused_buffers) = 0;
}
}
static void
pg_generate_edit (pg_main_t * pg,
pg_stream_t * s, u32 * buffers, u32 n_buffers)
{
pg_edit_t *e;
vec_foreach (e, s->non_fixed_edits)
{
switch (e->type)
{
case PG_EDIT_RANDOM:
case PG_EDIT_INCREMENT:
{
u32 lo_bit, hi_bit;
u64 v_min, v_max;
v_min = pg_edit_get_value (e, PG_EDIT_LO);
v_max = pg_edit_get_value (e, PG_EDIT_HI);
hi_bit = (BITS (u8) * STRUCT_OFFSET_OF (vlib_buffer_t, data)
+ BITS (u8) + e->lsb_bit_offset);
lo_bit = hi_bit - e->n_bits;
e->last_increment_value
= do_it (pg, s, buffers, n_buffers, lo_bit, hi_bit, v_min, v_max,
e->last_increment_value, e->type);
}
break;
case PG_EDIT_UNSPECIFIED:
break;
default:
/* Should not be any fixed edits left. */
ASSERT (0);
break;
}
}
/* Call any edit functions to e.g. completely IP lengths, checksums, ... */
{
int i;
for (i = vec_len (s->edit_groups) - 1; i >= 0; i--)
{
pg_edit_group_t *g = s->edit_groups + i;
if (g->edit_function)
g->edit_function (pg, s, g, buffers, n_buffers);
}
}
}
static void
pg_set_next_buffer_pointers (pg_main_t * pg,
pg_stream_t * s,
u32 * buffers, u32 * next_buffers, u32 n_buffers)
{
vlib_main_t *vm = vlib_get_main ();
while (n_buffers >= 4)
{
u32 ni0, ni1;
vlib_buffer_t *b0, *b1;
b0 = vlib_get_buffer (vm, buffers[0]);
b1 = vlib_get_buffer (vm, buffers[1]);
ni0 = next_buffers[0];
ni1 = next_buffers[1];
vlib_prefetch_buffer_with_index (vm, buffers[2], WRITE);
vlib_prefetch_buffer_with_index (vm, buffers[3], WRITE);
b0->flags |= VLIB_BUFFER_NEXT_PRESENT;
b1->flags |= VLIB_BUFFER_NEXT_PRESENT;
b0->next_buffer = ni0;
b1->next_buffer = ni1;
buffers += 2;
next_buffers += 2;
n_buffers -= 2;
}
while (n_buffers > 0)
{
u32 ni0;
vlib_buffer_t *b0;
b0 = vlib_get_buffer (vm, buffers[0]);
ni0 = next_buffers[0];
buffers += 1;
next_buffers += 1;
n_buffers -= 1;
b0->flags |= VLIB_BUFFER_NEXT_PRESENT;
b0->next_buffer = ni0;
}
}
static_always_inline void
init_buffers_inline (vlib_main_t * vm,
pg_stream_t * s,
u32 * buffers,
u32 n_buffers, u32 data_offset, u32 n_data, u32 set_data)
{
u32 n_left, *b;
u8 *data, *mask;
ASSERT (s->replay_packet_templates == 0);
data = s->fixed_packet_data + data_offset;
mask = s->fixed_packet_data_mask + data_offset;
if (data + n_data >= vec_end (s->fixed_packet_data))
n_data = (data < vec_end (s->fixed_packet_data)
? vec_end (s->fixed_packet_data) - data : 0);
if (n_data > 0)
{
ASSERT (data + n_data <= vec_end (s->fixed_packet_data));
ASSERT (mask + n_data <= vec_end (s->fixed_packet_data_mask));
}
n_left = n_buffers;
b = buffers;
while (n_left >= 4)
{
u32 bi0, bi1;
vlib_buffer_t *b0, *b1;
/* Prefetch next iteration. */
vlib_prefetch_buffer_with_index (vm, b[2], STORE);
vlib_prefetch_buffer_with_index (vm, b[3], STORE);
bi0 = b[0];
bi1 = b[1];
b += 2;
n_left -= 2;
b0 = vlib_get_buffer (vm, bi0);
b1 = vlib_get_buffer (vm, bi1);
b0->flags |= s->buffer_flags;
b1->flags |= s->buffer_flags;
vnet_buffer (b0)->sw_if_index[VLIB_RX] =
vnet_buffer (b1)->sw_if_index[VLIB_RX] = s->sw_if_index[VLIB_RX];
vnet_buffer (b0)->sw_if_index[VLIB_TX] =
vnet_buffer (b1)->sw_if_index[VLIB_TX] = s->sw_if_index[VLIB_TX];
if (set_data)
{
clib_memcpy_fast (b0->data, data, n_data);
clib_memcpy_fast (b1->data, data, n_data);
}
else
{
ASSERT (validate_buffer_data2 (b0, s, data_offset, n_data));
ASSERT (validate_buffer_data2 (b1, s, data_offset, n_data));
}
}
while (n_left >= 1)
{
u32 bi0;
vlib_buffer_t *b0;
bi0 = b[0];
b += 1;
n_left -= 1;
b0 = vlib_get_buffer (vm, bi0);
b0->flags |= s->buffer_flags;
vnet_buffer (b0)->sw_if_index[VLIB_RX] = s->sw_if_index[VLIB_RX];
vnet_buffer (b0)->sw_if_index[VLIB_TX] = s->sw_if_index[VLIB_TX];
if (set_data)
clib_memcpy_fast (b0->data, data, n_data);
else
ASSERT (validate_buffer_data2 (b0, s, data_offset, n_data));
}
}
static u32
pg_stream_fill_helper (pg_main_t * pg,
pg_stream_t * s,
pg_buffer_index_t * bi,
u32 * buffers, u32 * next_buffers, u32 n_alloc)
{
vlib_main_t *vm = vlib_get_main ();
uword is_start_of_packet = bi == s->buffer_indices;
u32 n_allocated;
ASSERT (vec_len (s->replay_packet_templates) == 0);
n_allocated = vlib_buffer_alloc (vm, buffers, n_alloc);
if (n_allocated == 0)
return 0;
/*
* We can't assume we got all the buffers we asked for...
* This never worked until recently.
*/
n_alloc = n_allocated;
/* Reinitialize buffers */
init_buffers_inline
(vm, s,
buffers,
n_alloc, (bi - s->buffer_indices) * s->buffer_bytes /* data offset */ ,
s->buffer_bytes,
/* set_data */ 1);
if (next_buffers)
pg_set_next_buffer_pointers (pg, s, buffers, next_buffers, n_alloc);
if (is_start_of_packet)
{
pg_generate_set_lengths (pg, s, buffers, n_alloc);
if (vec_len (s->buffer_indices) > 1)
pg_generate_fix_multi_buffer_lengths (pg, s, buffers, n_alloc);
pg_generate_edit (pg, s, buffers, n_alloc);
}
return n_alloc;
}
static u32
pg_stream_fill_replay (pg_main_t * pg, pg_stream_t * s, u32 n_alloc)
{
pg_buffer_index_t *bi;
u32 n_left, i, l;
u32 buffer_alloc_request = 0;
u32 buffer_alloc_result;
u32 current_buffer_index;
u32 *buffers;
vlib_main_t *vm = vlib_get_main ();
vnet_main_t *vnm = vnet_get_main ();
u32 buf_sz = vlib_buffer_get_default_data_size (vm);
vnet_interface_main_t *im = &vnm->interface_main;
vnet_sw_interface_t *si;
buffers = pg->replay_buffers_by_thread[vm->thread_index];
vec_reset_length (buffers);
bi = s->buffer_indices;
n_left = n_alloc;
i = s->current_replay_packet_index;
l = vec_len (s->replay_packet_templates);
/* Figure out how many buffers we need */
while (n_left > 0)
{
u8 *d0;
d0 = vec_elt (s->replay_packet_templates, i);
buffer_alloc_request += (vec_len (d0) + (buf_sz - 1)) / buf_sz;
i = ((i + 1) == l) ? 0 : i + 1;
n_left--;
}
ASSERT (buffer_alloc_request > 0);
vec_validate (buffers, buffer_alloc_request - 1);
/* Allocate that many buffers */
buffer_alloc_result = vlib_buffer_alloc (vm, buffers, buffer_alloc_request);
if (buffer_alloc_result < buffer_alloc_request)
{
clib_warning ("alloc failure, got %d not %d", buffer_alloc_result,
buffer_alloc_request);
vlib_buffer_free_no_next (vm, buffers, buffer_alloc_result);
pg->replay_buffers_by_thread[vm->thread_index] = buffers;
return 0;
}
/* Now go generate the buffers, and add them to the FIFO */
n_left = n_alloc;
current_buffer_index = 0;
i = s->current_replay_packet_index;
l = vec_len (s->replay_packet_templates);
while (n_left > 0)
{
u8 *d0;
int not_last;
u32 data_offset;
u32 bytes_to_copy, bytes_this_chunk;
vlib_buffer_t *b;
d0 = vec_elt (s->replay_packet_templates, i);
data_offset = 0;
bytes_to_copy = vec_len (d0);
/* Add head chunk to pg fifo */
clib_fifo_add1 (bi->buffer_fifo, buffers[current_buffer_index]);
/* Copy the data */
while (bytes_to_copy)
{
bytes_this_chunk = clib_min (bytes_to_copy, buf_sz);
ASSERT (current_buffer_index < vec_len (buffers));
b = vlib_get_buffer (vm, buffers[current_buffer_index]);
clib_memcpy_fast (b->data, d0 + data_offset, bytes_this_chunk);
vnet_buffer (b)->sw_if_index[VLIB_RX] = s->sw_if_index[VLIB_RX];
vnet_buffer (b)->sw_if_index[VLIB_TX] = s->sw_if_index[VLIB_TX];
b->flags = s->buffer_flags;
b->next_buffer = 0;
b->current_data = 0;
b->current_length = bytes_this_chunk;
not_last = bytes_this_chunk < bytes_to_copy;
if (not_last)
{
ASSERT (current_buffer_index < (vec_len (buffers) - 1));
b->flags |= VLIB_BUFFER_NEXT_PRESENT;
b->next_buffer = buffers[current_buffer_index + 1];
}
bytes_to_copy -= bytes_this_chunk;
data_offset += bytes_this_chunk;
current_buffer_index++;
}
i = ((i + 1) == l) ? 0 : i + 1;
n_left--;
}
/* Update the interface counters */
si = vnet_get_sw_interface (vnm, s->sw_if_index[VLIB_RX]);
l = 0;
for (i = 0; i < n_alloc; i++)
l += vlib_buffer_index_length_in_chain (vm, buffers[i]);
vlib_increment_combined_counter (im->combined_sw_if_counters
+ VNET_INTERFACE_COUNTER_RX,
vlib_get_thread_index (),
si->sw_if_index, n_alloc, l);
s->current_replay_packet_index += n_alloc;
s->current_replay_packet_index %= vec_len (s->replay_packet_templates);
pg->replay_buffers_by_thread[vm->thread_index] = buffers;
return n_alloc;
}
static u32
pg_stream_fill (pg_main_t * pg, pg_stream_t * s, u32 n_buffers)
{
pg_buffer_index_t *bi;
word i, n_in_fifo, n_alloc, n_free, n_added;
u32 *tail, *start, *end, *last_tail, *last_start;
bi = s->buffer_indices;
n_in_fifo = clib_fifo_elts (bi->buffer_fifo);
if (n_in_fifo >= n_buffers)
return n_in_fifo;
n_alloc = n_buffers - n_in_fifo;
/* Round up, but never generate more than limit. */
n_alloc = clib_max (VLIB_FRAME_SIZE, n_alloc);
if (s->n_packets_limit > 0
&& s->n_packets_generated + n_in_fifo + n_alloc >= s->n_packets_limit)
{
n_alloc = s->n_packets_limit - s->n_packets_generated - n_in_fifo;
if (n_alloc < 0)
n_alloc = 0;
}
/*
* Handle pcap replay directly
*/
if (s->replay_packet_templates)
return pg_stream_fill_replay (pg, s, n_alloc);
/* All buffer fifos should have the same size. */
if (CLIB_DEBUG > 0)
{
uword l = ~0, e;
vec_foreach (bi, s->buffer_indices)
{
e = clib_fifo_elts (bi->buffer_fifo);
if (bi == s->buffer_indices)
l = e;
ASSERT (l == e);
}
}
last_tail = last_start = 0;
n_added = n_alloc;
for (i = vec_len (s->buffer_indices) - 1; i >= 0; i--)
{
bi = vec_elt_at_index (s->buffer_indices, i);
n_free = clib_fifo_free_elts (bi->buffer_fifo);
if (n_free < n_alloc)
clib_fifo_resize (bi->buffer_fifo, n_alloc - n_free);
tail = clib_fifo_advance_tail (bi->buffer_fifo, n_alloc);
start = bi->buffer_fifo;
end = clib_fifo_end (bi->buffer_fifo);
if (tail + n_alloc <= end)
{
n_added =
pg_stream_fill_helper (pg, s, bi, tail, last_tail, n_alloc);
}
else
{
u32 n = clib_min (end - tail, n_alloc);
n_added = pg_stream_fill_helper (pg, s, bi, tail, last_tail, n);
if (n_added == n && n_alloc > n_added)
{
n_added += pg_stream_fill_helper
(pg, s, bi, start, last_start, n_alloc - n_added);
}
}
if (PREDICT_FALSE (n_added < n_alloc))
tail = clib_fifo_advance_tail (bi->buffer_fifo, n_added - n_alloc);
last_tail = tail;
last_start = start;
/* Verify that pkts in the fifo are properly allocated */
}
return n_in_fifo + n_added;
}
typedef struct
{
u32 stream_index;
u32 packet_length;
u32 sw_if_index;
/* Use pre data for packet data. */
vlib_buffer_t buffer;
} pg_input_trace_t;
static u8 *
format_pg_input_trace (u8 * s, va_list * va)
{
vlib_main_t *vm = va_arg (*va, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
pg_input_trace_t *t = va_arg (*va, pg_input_trace_t *);
pg_main_t *pg = &pg_main;
pg_stream_t *stream;
vlib_node_t *n;
u32 indent = format_get_indent (s);
stream = 0;
if (!pool_is_free_index (pg->streams, t->stream_index))
stream = pool_elt_at_index (pg->streams, t->stream_index);
if (stream)
s = format (s, "stream %v", pg->streams[t->stream_index].name);
else
s = format (s, "stream %d", t->stream_index);
s = format (s, ", %d bytes", t->packet_length);
s = format (s, ", sw_if_index %d", t->sw_if_index);
s = format (s, "\n%U%U",
format_white_space, indent, format_vnet_buffer, &t->buffer);
s = format (s, "\n%U", format_white_space, indent);
n = 0;
if (stream)
n = vlib_get_node (vm, stream->node_index);
if (n && n->format_buffer)
s = format (s, "%U", n->format_buffer,
t->buffer.pre_data, sizeof (t->buffer.pre_data));
else
s = format (s, "%U",
format_hex_bytes, t->buffer.pre_data,
ARRAY_LEN (t->buffer.pre_data));
return s;
}
static int
pg_input_trace (pg_main_t * pg,
vlib_node_runtime_t * node, u32 stream_index, u32 next_index,
u32 * buffers, const u32 n_buffers, const u32 n_trace)
{
vlib_main_t *vm = vlib_get_main ();
u32 *b, n_left;
u32 n_trace0 = 0, n_trace1 = 0;
n_left = clib_min (n_buffers, n_trace);
b = buffers;
while (n_left >= 2)
{
u32 bi0, bi1;
vlib_buffer_t *b0, *b1;
pg_input_trace_t *t0, *t1;
bi0 = b[0];
bi1 = b[1];
b += 2;
n_left -= 2;
b0 = vlib_get_buffer (vm, bi0);
b1 = vlib_get_buffer (vm, bi1);
n_trace0 +=
vlib_trace_buffer (vm, node, next_index, b0, /* follow_chain */ 1);
n_trace1 +=
vlib_trace_buffer (vm, node, next_index, b1, /* follow_chain */ 1);
t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
t1 = vlib_add_trace (vm, node, b1, sizeof (t1[0]));
t0->stream_index = stream_index;
t1->stream_index = stream_index;
t0->packet_length = vlib_buffer_length_in_chain (vm, b0);
t1->packet_length = vlib_buffer_length_in_chain (vm, b1);
t0->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX];
t1->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_RX];
clib_memcpy_fast (&t0->buffer, b0,
sizeof (b0[0]) - sizeof (b0->pre_data));
clib_memcpy_fast (&t1->buffer, b1,
sizeof (b1[0]) - sizeof (b1->pre_data));
clib_memcpy_fast (t0->buffer.pre_data, b0->data,
sizeof (t0->buffer.pre_data));
clib_memcpy_fast (t1->buffer.pre_data, b1->data,
sizeof (t1->buffer.pre_data));
}
while (n_left >= 1)
{
u32 bi0;
vlib_buffer_t *b0;
pg_input_trace_t *t0;
bi0 = b[0];
b += 1;
n_left -= 1;
b0 = vlib_get_buffer (vm, bi0);
n_trace0 +=
vlib_trace_buffer (vm, node, next_index, b0, /* follow_chain */ 1);
t0 = vlib_add_trace (vm, node, b0, sizeof (t0[0]));
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];
clib_memcpy_fast (&t0->buffer, b0,
sizeof (b0[0]) - sizeof (b0->pre_data));
clib_memcpy_fast (t0->buffer.pre_data, b0->data,
sizeof (t0->buffer.pre_data));
}
return n_trace - n_trace0 - n_trace1;
}
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)
{
for (int i = 0; i < n_buffers; i++)
{
vlib_buffer_t *b0 = vlib_get_buffer (vm, buffers[i]);
u8 l4_proto = 0;
u32 oflags = 0;
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))
{
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);
}
}
vnet_buffer (b0)->l2_hdr_offset = 0;
vnet_buffer (b0)->l3_hdr_offset = l2hdr_sz;
if (PREDICT_TRUE (ethertype == ETHERNET_TYPE_IP4))
{
ip4_header_t *ip4 =
(ip4_header_t *) (vlib_buffer_get_current (b0) + l2hdr_sz);
vnet_buffer (b0)->l4_hdr_offset = l2hdr_sz + ip4_header_bytes (ip4);
l4_proto = ip4->protocol;
b0->flags |=
(VNET_BUFFER_F_IS_IP4 | VNET_BUFFER_F_L2_HDR_OFFSET_VALID |
VNET_BUFFER_F_L3_HDR_OFFSET_VALID |
VNET_BUFFER_F_L4_HDR_OFFSET_VALID);
if (buffer_oflags & VNET_BUFFER_OFFLOAD_F_IP_CKSUM)
oflags |= VNET_BUFFER_OFFLOAD_F_IP_CKSUM;
}
else if (PREDICT_TRUE (ethertype == ETHERNET_TYPE_IP6))
{
ip6_header_t *ip6 =
(ip6_header_t *) (vlib_buffer_get_current (b0) + l2hdr_sz);
vnet_buffer (b0)->l4_hdr_offset = l2hdr_sz + sizeof (ip6_header_t);
/* FIXME IPv6 EH traversal */
l4_proto = ip6->protocol;
b0->flags |=
(VNET_BUFFER_F_IS_IP6 | VNET_BUFFER_F_L2_HDR_OFFSET_VALID |
VNET_BUFFER_F_L3_HDR_OFFSET_VALID |
VNET_BUFFER_F_L4_HDR_OFFSET_VALID);
}
if (l4_proto == IP_PROTOCOL_TCP)
{
if (buffer_oflags & VNET_BUFFER_OFFLOAD_F_TCP_CKSUM)
oflags |= VNET_BUFFER_OFFLOAD_F_TCP_CKSUM;
/* only set GSO flag for chained buffers */
if (gso_enabled && (b0->flags & VLIB_BUFFER_NEXT_PRESENT))
{
b0->flags |= VNET_BUFFER_F_GSO;
tcp_header_t *tcp =
(tcp_header_t *) (vlib_buffer_get_current (b0) +
vnet_buffer (b0)->l4_hdr_offset);
vnet_buffer2 (b0)->gso_l4_hdr_sz = tcp_header_bytes (tcp);
vnet_buffer2 (b0)->gso_size = gso_size;
}
}
else if (l4_proto == IP_PROTOCOL_UDP)
{
if (buffer_oflags & VNET_BUFFER_OFFLOAD_F_UDP_CKSUM)
oflags |= VNET_BUFFER_OFFLOAD_F_UDP_CKSUM;
}
if (oflags)
vnet_buffer_offload_flags_set (b0, oflags);
}
}
static uword
pg_generate_packets (vlib_node_runtime_t * node,
pg_main_t * pg,
pg_stream_t * s, uword n_packets_to_generate)
{
vlib_main_t *vm = vlib_get_main ();
u32 *to_next, n_this_frame, n_left, n_trace, n_packets_in_fifo;
uword n_packets_generated;
pg_buffer_index_t *bi, *bi0;
u32 next_index = s->next_index;
vnet_feature_main_t *fm = &feature_main;
vnet_feature_config_main_t *cm;
u8 feature_arc_index = fm->device_input_feature_arc_index;
cm = &fm->feature_config_mains[feature_arc_index];
u32 current_config_index = ~(u32) 0;
pg_interface_t *pi;
int i;
pi = pool_elt_at_index (pg->interfaces,
pg->if_id_by_sw_if_index[s->sw_if_index[VLIB_RX]]);
bi0 = s->buffer_indices;
n_packets_in_fifo = pg_stream_fill (pg, s, n_packets_to_generate);
n_packets_to_generate = clib_min (n_packets_in_fifo, n_packets_to_generate);
n_packets_generated = 0;
if (PREDICT_FALSE
(vnet_have_features (feature_arc_index, s->sw_if_index[VLIB_RX])))
{
current_config_index =
vec_elt (cm->config_index_by_sw_if_index, s->sw_if_index[VLIB_RX]);
vnet_get_config_data (&cm->config_main, ¤t_config_index,
&next_index, 0);
}
if (PREDICT_FALSE (pi->coalesce_enabled))
vnet_gro_flow_table_schedule_node_on_dispatcher (vm, pi->flow_table);
while (n_packets_to_generate > 0)
{
u32 *head, *start, *end;
if (PREDICT_TRUE (next_index == VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT))
{
vlib_next_frame_t *nf;
vlib_frame_t *f;
ethernet_input_frame_t *ef;
vlib_get_new_next_frame (vm, node, next_index, to_next, n_left);
nf = vlib_node_runtime_get_next_frame (vm, node, next_index);
f = vlib_get_frame (vm, nf->frame);
f->flags = ETH_INPUT_FRAME_F_SINGLE_SW_IF_IDX;
ef = vlib_frame_scalar_args (f);
ef->sw_if_index = pi->sw_if_index;
ef->hw_if_index = pi->hw_if_index;
vlib_frame_no_append (f);
}
else
vlib_get_next_frame (vm, node, next_index, to_next, n_left);
n_this_frame = n_packets_to_generate;
if (n_this_frame > n_left)
n_this_frame = n_left;
start = bi0->buffer_fifo;
end = clib_fifo_end (bi0->buffer_fifo);
head = clib_fifo_head (bi0->buffer_fifo);
if (head + n_this_frame <= end)
vlib_buffer_copy_indices (to_next, head, n_this_frame);
else
{
u32 n = end - head;
vlib_buffer_copy_indices (to_next + 0, head, n);
vlib_buffer_copy_indices (to_next + n, start, n_this_frame - n);
}
if (s->replay_packet_templates == 0)
{
vec_foreach (bi, s->buffer_indices)
clib_fifo_advance_head (bi->buffer_fifo, n_this_frame);
}
else
{
clib_fifo_advance_head (bi0->buffer_fifo, n_this_frame);
}
if (current_config_index != ~(u32) 0)
for (i = 0; i < n_this_frame; i++)
{
vlib_buffer_t *b;
b = vlib_get_buffer (vm, to_next[i]);
b->current_config_index = current_config_index;
vnet_buffer (b)->feature_arc_index = feature_arc_index;
}
if (pi->gso_enabled || (s->buffer_flags & VNET_BUFFER_F_OFFLOAD))
{
fill_buffer_offload_flags (vm, to_next, n_this_frame,
s->buffer_oflags, pi->gso_enabled,
pi->gso_size);
}
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);
vlib_set_trace_count (vm, node, n_trace);
}
n_packets_to_generate -= n_this_frame;
n_packets_generated += n_this_frame;
n_left -= n_this_frame;
if (CLIB_DEBUG > 0)
{
int i;
vlib_buffer_t *b;
for (i = 0; i < n_this_frame; i++)
{
b = vlib_get_buffer (vm, to_next[i]);
ASSERT ((b->flags & VLIB_BUFFER_NEXT_PRESENT) == 0 ||
b->current_length >= VLIB_BUFFER_MIN_CHAIN_SEG_SIZE);
}
}
vlib_put_next_frame (vm, node, next_index, n_left);
}
return n_packets_generated;
}
static uword
pg_input_stream (vlib_node_runtime_t * node, pg_main_t * pg, pg_stream_t * s)
{
vlib_main_t *vm = vlib_get_main ();
uword n_packets;
f64 time_now, dt;
if (s->n_packets_limit > 0 && s->n_packets_generated >= s->n_packets_limit)
{
pg_stream_enable_disable (pg, s, /* want_enabled */ 0);
return 0;
}
/* Apply rate limit. */
time_now = vlib_time_now (vm);
if (s->time_last_generate == 0)
s->time_last_generate = time_now;
dt = time_now - s->time_last_generate;
s->time_last_generate = time_now;
n_packets = VLIB_FRAME_SIZE;
if (s->rate_packets_per_second > 0)
{
s->packet_accumulator += dt * s->rate_packets_per_second;
n_packets = s->packet_accumulator;
/* Never allow accumulator to grow if we get behind. */
s->packet_accumulator -= n_packets;
}
/* Apply fixed limit. */
if (s->n_packets_limit > 0
&& s->n_packets_generated + n_packets > s->n_packets_limit)
n_packets = s->n_packets_limit - s->n_packets_generated;
/* Generate up to one frame's worth of packets. */
if (n_packets > s->n_max_frame)
n_packets = s->n_max_frame;
if (n_packets > 0)
n_packets = pg_generate_packets (node, pg, s, n_packets);
s->n_packets_generated += n_packets;
return n_packets;
}
uword
pg_input (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
{
uword i;
pg_main_t *pg = &pg_main;
uword n_packets = 0;
u32 worker_index = 0;
if (vlib_num_workers ())
worker_index = vlib_get_current_worker_index ();
/* *INDENT-OFF* */
clib_bitmap_foreach (i, pg->enabled_streams[worker_index]) {
pg_stream_t *s = vec_elt_at_index (pg->streams, i);
n_packets += pg_input_stream (node, pg, s);
}
/* *INDENT-ON* */
return n_packets;
}
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (pg_input_node) = {
.function = pg_input,
.flags = VLIB_NODE_FLAG_TRACE_SUPPORTED,
.name = "pg-input",
.sibling_of = "device-input",
.type = VLIB_NODE_TYPE_INPUT,
.format_trace = format_pg_input_trace,
/* Input node will be left disabled until a stream is active. */
.state = VLIB_NODE_STATE_DISABLED,
};
/* *INDENT-ON* */
VLIB_NODE_FN (pg_input_mac_filter) (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
u16 nexts[VLIB_FRAME_SIZE], *next;
pg_main_t *pg = &pg_main;
u32 n_left, *from;
from = vlib_frame_vector_args (frame);
n_left = frame->n_vectors;
next = nexts;
clib_memset_u16 (next, 0, VLIB_FRAME_SIZE);
vlib_get_buffers (vm, from, bufs, n_left);
while (n_left)
{
const ethernet_header_t *eth;
pg_interface_t *pi;
mac_address_t in;
pi = pool_elt_at_index
(pg->interfaces,
pg->if_id_by_sw_if_index[vnet_buffer (b[0])->sw_if_index[VLIB_RX]]);
eth = vlib_buffer_get_current (b[0]);
mac_address_from_bytes (&in, eth->dst_address);
if (PREDICT_FALSE (ethernet_address_cast (in.bytes)))
{
mac_address_t *allowed;
if (0 != vec_len (pi->allowed_mcast_macs))
{
vec_foreach (allowed, pi->allowed_mcast_macs)
{
if (0 != mac_address_cmp (allowed, &in))
break;
}
if (vec_is_member (allowed, pi->allowed_mcast_macs))
vnet_feature_next_u16 (&next[0], b[0]);
}
}
b += 1;
next += 1;
n_left -= 1;
}
vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
return (frame->n_vectors);
}
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (pg_input_mac_filter) = {
.name = "pg-input-mac-filter",
.vector_size = sizeof (u32),
.format_trace = format_pg_input_trace,
.n_next_nodes = 1,
.next_nodes = {
[0] = "error-drop",
},
};
VNET_FEATURE_INIT (pg_input_mac_filter_feat, static) = {
.arc_name = "device-input",
.node_name = "pg-input-mac-filter",
};
/* *INDENT-ON* */
static clib_error_t *
pg_input_mac_filter_cfg (vlib_main_t * vm,
unformat_input_t * input, vlib_cli_command_t * cmd)
{
unformat_input_t _line_input, *line_input = &_line_input;
u32 sw_if_index = ~0;
int is_enable = 1;
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_sw_interface,
vnet_get_main (), &sw_if_index))
;
else if (unformat (line_input, "%U",
unformat_vlib_enable_disable, &is_enable))
;
else
return clib_error_create ("unknown input `%U'",
format_unformat_error, line_input);
}
unformat_free (line_input);
if (~0 == sw_if_index)
return clib_error_create ("specify interface");
vnet_feature_enable_disable ("device-input",
"pg-input-mac-filter",
sw_if_index, is_enable, 0, 0);
return NULL;
}
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (enable_streams_cli, static) = {
.path = "packet-generator mac-filter",
.short_help = "packet-generator mac-filter <INTERFACE> <on|off>",
.function = pg_input_mac_filter_cfg,
};
/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
