From 4222347a87994cc109499ebe67498792c0e705f8 Mon Sep 17 00:00:00 2001 From: Kingwel Xie Date: Sat, 19 Jan 2019 22:49:26 -0500 Subject: pg: cli improvement 1. show packet-generator verbose, display all edit-groups and hdr-size 2. unformat_pg_payload, always mark payload hdr-size as 0 3. packet-generator now can change rate/limit/size at runtime 4. validate_stream checks buffer min-size/max-size against all edit groups' header size 5. remove incorrect max packet size limit check in validate_stream(...) Change-Id: Ic45e4f2b98bc0fd7330e0b480dd677fa3c69a677 Signed-off-by: Kingwel Xie Signed-off-by: Dave Barach --- src/vnet/pg/cli.c | 101 +++++++++++++++++++++++++++++++++++---------------- src/vnet/pg/edit.c | 2 +- src/vnet/pg/pg.h | 1 + src/vnet/pg/stream.c | 25 +++++++++++++ 4 files changed, 97 insertions(+), 32 deletions(-) (limited to 'src/vnet/pg') diff --git a/src/vnet/pg/cli.c b/src/vnet/pg/cli.c index a09107c50c5..bca05515379 100644 --- a/src/vnet/pg/cli.c +++ b/src/vnet/pg/cli.c @@ -42,9 +42,9 @@ #include #include -#ifdef CLIB_UNIX +#include #include -#endif + /* Root of all packet generator cli commands. */ /* *INDENT-OFF* */ @@ -145,40 +145,66 @@ VLIB_CLI_COMMAND (disable_streams_cli, static) = { }; /* *INDENT-ON* */ +static u8 * +format_pg_edit_group (u8 * s, va_list * va) +{ + pg_edit_group_t *g = va_arg (*va, pg_edit_group_t *); + + s = + format (s, "hdr-size %d, offset %d, ", g->n_packet_bytes, + g->start_byte_offset); + if (g->edit_function) + { + u8 *function_name; + u8 *junk_after_name; + function_name = format (0, "%U%c", format_clib_elf_symbol_with_address, + g->edit_function, 0); + junk_after_name = function_name; + while (*junk_after_name && *junk_after_name != ' ') + junk_after_name++; + *junk_after_name = 0; + s = format (s, "edit-funtion %s, ", function_name); + vec_free (function_name); + } + + return s; +} + static u8 * format_pg_stream (u8 * s, va_list * va) { pg_stream_t *t = va_arg (*va, pg_stream_t *); - u8 *v; + int verbose = va_arg (*va, int); if (!t) - return format (s, "%=16s%=12s%=16s%s", + return format (s, "%-16s%=12s%=16s%s", "Name", "Enabled", "Count", "Parameters"); - s = format (s, "%-16v%=12s%16Ld", + 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); + int indent = format_get_indent (s); - v = format (v, "rate %.2e pps, ", t->rate_packets_per_second); - - v = format (v, "size %d%c%d, ", + s = format (s, "limit %Ld, ", t->n_packets_limit); + s = format (s, "rate %.2e pps, ", t->rate_packets_per_second); + s = format (s, "size %d%c%d, ", t->min_packet_bytes, t->packet_size_edit_type == PG_EDIT_RANDOM ? '+' : '-', t->max_packet_bytes); + s = format (s, "buffer-size %d, ", t->buffer_bytes); + s = format (s, "worker %d, ", t->worker_index); - v = format (v, "buffer-size %d, ", t->buffer_bytes); - - v = format (v, "worker %d, ", t->worker_index); - - if (v) + if (verbose) + { + pg_edit_group_t *g; + /* *INDENT-OFF* */ + vec_foreach (g, t->edit_groups) { - s = format (s, " %v", v); - vec_free (v); + s = format (s, "\n%U%U", format_white_space, indent, format_pg_edit_group, g); + } + /* *INDENT-ON* */ } return s; @@ -190,6 +216,15 @@ show_streams (vlib_main_t * vm, { pg_main_t *pg = &pg_main; pg_stream_t *s; + int verbose = 0; + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (input, "verbose")) + verbose = 1; + else + break; + } if (pool_elts (pg->streams) == 0) { @@ -197,10 +232,10 @@ show_streams (vlib_main_t * vm, goto done; } - vlib_cli_output (vm, "%U", format_pg_stream, 0); + vlib_cli_output (vm, "%U", format_pg_stream, 0, 0); /* *INDENT-OFF* */ pool_foreach (s, pg->streams, ({ - vlib_cli_output (vm, "%U", format_pg_stream, s); + vlib_cli_output (vm, "%U", format_pg_stream, s, verbose); })); /* *INDENT-ON* */ @@ -210,8 +245,8 @@ done: /* *INDENT-OFF* */ VLIB_CLI_COMMAND (show_streams_cli, static) = { - .path = "show packet-generator", - .short_help = "Show packet generator streams", + .path = "show packet-generator ", + .short_help = "show packet-generator [verbose]", .function = show_streams, }; /* *INDENT-ON* */ @@ -277,10 +312,11 @@ 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); + u32 hdr_size = pg_edit_group_n_bytes (s, 0); + if (s->min_packet_bytes < hdr_size) + return clib_error_create ("min-size < total header size %d", hdr_size); + if (s->buffer_bytes == 0) + return clib_error_create ("buffer-size must be positive"); if (s->rate_packets_per_second < 0) return clib_error_create ("negative rate"); @@ -362,10 +398,6 @@ new_stream (vlib_main_t * vm, } } - error = validate_stream (&s); - if (error) - return error; - if (!sub_input_given && !pcap_file_name) { error = clib_error_create ("no packet data given"); @@ -419,6 +451,10 @@ new_stream (vlib_main_t * vm, } } + error = validate_stream (&s); + if (error) + return error; + pg_stream_add (pg, &s); return 0; @@ -501,7 +537,10 @@ change_stream_parameters (vlib_main_t * vm, error = validate_stream (&s_new); if (!error) - s[0] = s_new; + { + s[0] = s_new; + pg_stream_change (pg, s); + } return error; } diff --git a/src/vnet/pg/edit.c b/src/vnet/pg/edit.c index 8d1437e96bc..a0aab1fb566 100644 --- a/src/vnet/pg/edit.c +++ b/src/vnet/pg/edit.c @@ -167,7 +167,7 @@ unformat_pg_payload (unformat_input_t * input, va_list * args) for (i = 0; i < len; i++) v[i] = i % ilen; - e = pg_create_edit_group (s, sizeof (e[0]), vec_len (v), 0); + e = pg_create_edit_group (s, sizeof (e[0]), 0, 0); e->type = PG_EDIT_FIXED; e->n_bits = vec_len (v) * BITS (v[0]); diff --git a/src/vnet/pg/pg.h b/src/vnet/pg/pg.h index 16463c2a8c5..bc3b03b7670 100644 --- a/src/vnet/pg/pg.h +++ b/src/vnet/pg/pg.h @@ -345,6 +345,7 @@ vlib_node_function_t pg_input, pg_output; /* Stream add/delete. */ void pg_stream_del (pg_main_t * pg, uword index); void pg_stream_add (pg_main_t * pg, pg_stream_t * s_init); +void pg_stream_change (pg_main_t * pg, pg_stream_t * s); /* Enable/disable stream. */ void pg_stream_enable_disable (pg_main_t * pg, pg_stream_t * s, diff --git a/src/vnet/pg/stream.c b/src/vnet/pg/stream.c index ddd15d66406..c91cacafe57 100644 --- a/src/vnet/pg/stream.c +++ b/src/vnet/pg/stream.c @@ -483,6 +483,31 @@ pg_stream_del (pg_main_t * pg, uword index) pool_put (pg->streams, s); } +void +pg_stream_change (pg_main_t * pg, pg_stream_t * s) +{ + /* Determine packet size. */ + switch (s->packet_size_edit_type) + { + case PG_EDIT_INCREMENT: + case PG_EDIT_RANDOM: + if (s->min_packet_bytes == s->max_packet_bytes) + s->packet_size_edit_type = PG_EDIT_FIXED; + case PG_EDIT_FIXED: + break; + + default: + /* Get packet size from fixed edits. */ + s->packet_size_edit_type = PG_EDIT_FIXED; + if (!s->replay_packet_templates) + s->min_packet_bytes = s->max_packet_bytes = + vec_len (s->fixed_packet_data); + break; + } + + s->last_increment_packet_size = s->min_packet_bytes; +} + /* * fd.io coding-style-patch-verification: ON -- cgit 1.2.3-korg