numam-dpdk/examples/qos_sched/cfg_file.c
Bruce Richardson 3031749c2d remove trailing whitespaces
This commit removes trailing whitespace from lines in files. Almost all
files are affected, as the BSD license copyright header had trailing
whitespace on 4 lines in it [hence the number of files reporting 8 lines
changed in the diffstat].

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
[Thomas: remove spaces before tabs in libs]
[Thomas: remove more trailing spaces in non-C files]
Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
2014-06-11 00:29:34 +02:00

613 lines
16 KiB
C
Executable File

/*-
* BSD LICENSE
*
* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <rte_string_fns.h>
#include <rte_sched.h>
#include "cfg_file.h"
#include "main.h"
/** when we resize a file structure, how many extra entries
* for new sections do we add in */
#define CFG_ALLOC_SECTION_BATCH 8
/** when we resize a section structure, how many extra entries
* for new entries do we add in */
#define CFG_ALLOC_ENTRY_BATCH 16
static unsigned
_strip(char *str, unsigned len)
{
int newlen = len;
if (len == 0)
return 0;
if (isspace(str[len-1])) {
/* strip trailing whitespace */
while (newlen > 0 && isspace(str[newlen - 1]))
str[--newlen] = '\0';
}
if (isspace(str[0])) {
/* strip leading whitespace */
int i,start = 1;
while (isspace(str[start]) && start < newlen)
start++
; /* do nothing */
newlen -= start;
for (i = 0; i < newlen; i++)
str[i] = str[i+start];
str[i] = '\0';
}
return newlen;
}
struct cfg_file *
cfg_load(const char *filename, int flags)
{
int allocated_sections = CFG_ALLOC_SECTION_BATCH;
int allocated_entries = 0;
int curr_section = -1;
int curr_entry = -1;
char buffer[256];
int lineno = 0;
struct cfg_file *cfg = NULL;
FILE *f = fopen(filename, "r");
if (f == NULL)
return NULL;
cfg = malloc(sizeof(*cfg) + sizeof(cfg->sections[0]) * allocated_sections);
if (cfg == NULL)
goto error2;
memset(cfg->sections, 0, sizeof(cfg->sections[0]) * allocated_sections);
while (fgets(buffer, sizeof(buffer), f) != NULL) {
char *pos = NULL;
size_t len = strnlen(buffer, sizeof(buffer));
lineno++;
if (len >=sizeof(buffer) - 1 && buffer[len-1] != '\n'){
printf("Error line %d - no \\n found on string. "
"Check if line too long\n", lineno);
goto error1;
}
if ((pos = memchr(buffer, ';', sizeof(buffer))) != NULL) {
*pos = '\0';
len = pos - buffer;
}
len = _strip(buffer, len);
if (buffer[0] != '[' && memchr(buffer, '=', len) == NULL)
continue;
if (buffer[0] == '[') {
/* section heading line */
char *end = memchr(buffer, ']', len);
if (end == NULL) {
printf("Error line %d - no terminating '[' found\n", lineno);
goto error1;
}
*end = '\0';
_strip(&buffer[1], end - &buffer[1]);
/* close off old section and add start new one */
if (curr_section >= 0)
cfg->sections[curr_section]->num_entries = curr_entry + 1;
curr_section++;
/* resize overall struct if we don't have room for more sections */
if (curr_section == allocated_sections) {
allocated_sections += CFG_ALLOC_SECTION_BATCH;
struct cfg_file *n_cfg = realloc(cfg, sizeof(*cfg) +
sizeof(cfg->sections[0]) * allocated_sections);
if (n_cfg == NULL) {
printf("Error - no more memory\n");
goto error1;
}
cfg = n_cfg;
}
/* allocate space for new section */
allocated_entries = CFG_ALLOC_ENTRY_BATCH;
curr_entry = -1;
cfg->sections[curr_section] = malloc(sizeof(*cfg->sections[0]) +
sizeof(cfg->sections[0]->entries[0]) * allocated_entries);
if (cfg->sections[curr_section] == NULL) {
printf("Error - no more memory\n");
goto error1;
}
rte_snprintf(cfg->sections[curr_section]->name,
sizeof(cfg->sections[0]->name),
"%s", &buffer[1]);
}
else {
/* value line */
if (curr_section < 0) {
printf("Error line %d - value outside of section\n", lineno);
goto error1;
}
struct cfg_section *sect = cfg->sections[curr_section];
char *split[2];
if (rte_strsplit(buffer, sizeof(buffer), split, 2, '=') != 2) {
printf("Error at line %d - cannot split string\n", lineno);
goto error1;
}
curr_entry++;
if (curr_entry == allocated_entries) {
allocated_entries += CFG_ALLOC_ENTRY_BATCH;
struct cfg_section *n_sect = realloc(sect, sizeof(*sect) +
sizeof(sect->entries[0]) * allocated_entries);
if (n_sect == NULL) {
printf("Error - no more memory\n");
goto error1;
}
sect = cfg->sections[curr_section] = n_sect;
}
sect->entries[curr_entry] = malloc(sizeof(*sect->entries[0]));
if (sect->entries[curr_entry] == NULL) {
printf("Error - no more memory\n");
goto error1;
}
struct cfg_entry *entry = sect->entries[curr_entry];
rte_snprintf(entry->name, sizeof(entry->name), "%s", split[0]);
rte_snprintf(entry->value, sizeof(entry->value), "%s", split[1]);
_strip(entry->name, strnlen(entry->name, sizeof(entry->name)));
_strip(entry->value, strnlen(entry->value, sizeof(entry->value)));
}
}
fclose(f);
cfg->flags = flags;
cfg->sections[curr_section]->num_entries = curr_entry + 1;
cfg->num_sections = curr_section + 1;
return cfg;
error1:
cfg_close(cfg);
error2:
fclose(f);
return NULL;
}
int cfg_close(struct cfg_file *cfg)
{
int i, j;
if (cfg == NULL)
return -1;
for(i = 0; i < cfg->num_sections; i++) {
if (cfg->sections[i] != NULL) {
if (cfg->sections[i]->num_entries) {
for(j = 0; j < cfg->sections[i]->num_entries; j++) {
if (cfg->sections[i]->entries[j] != NULL)
free(cfg->sections[i]->entries[j]);
}
}
free(cfg->sections[i]);
}
}
free(cfg);
return 0;
}
int
cfg_num_sections(struct cfg_file *cfg, const char *sectionname, size_t length)
{
int i;
int num_sections = 0;
for (i = 0; i < cfg->num_sections; i++) {
if (strncmp(cfg->sections[i]->name, sectionname, length) == 0)
num_sections++;
}
return num_sections;
}
int
cfg_sections(struct cfg_file *cfg, char *sections[], int max_sections)
{
int i;
for (i = 0; i < cfg->num_sections && i < max_sections; i++) {
rte_snprintf(sections[i], CFG_NAME_LEN, "%s", cfg->sections[i]->name);
}
return i;
}
static const struct cfg_section *
_get_section(struct cfg_file *cfg, const char *sectionname)
{
int i;
for (i = 0; i < cfg->num_sections; i++) {
if (strncmp(cfg->sections[i]->name, sectionname,
sizeof(cfg->sections[0]->name)) == 0)
return cfg->sections[i];
}
return NULL;
}
int
cfg_has_section(struct cfg_file *cfg, const char *sectionname)
{
return (_get_section(cfg, sectionname) != NULL);
}
int
cfg_section_num_entries(struct cfg_file *cfg, const char *sectionname)
{
const struct cfg_section *s = _get_section(cfg, sectionname);
if (s == NULL)
return -1;
return s->num_entries;
}
int
cfg_section_entries(struct cfg_file *cfg, const char *sectionname,
struct cfg_entry *entries, int max_entries)
{
int i;
const struct cfg_section *sect = _get_section(cfg, sectionname);
if (sect == NULL)
return -1;
for (i = 0; i < max_entries && i < sect->num_entries; i++)
entries[i] = *sect->entries[i];
return i;
}
const char *
cfg_get_entry(struct cfg_file *cfg, const char *sectionname,
const char *entryname)
{
int i;
const struct cfg_section *sect = _get_section(cfg, sectionname);
if (sect == NULL)
return NULL;
for (i = 0; i < sect->num_entries; i++)
if (strncmp(sect->entries[i]->name, entryname, CFG_NAME_LEN) == 0)
return sect->entries[i]->value;
return NULL;
}
int
cfg_has_entry(struct cfg_file *cfg, const char *sectionname,
const char *entryname)
{
return (cfg_get_entry(cfg, sectionname, entryname) != NULL);
}
int
cfg_load_port(struct cfg_file *cfg, struct rte_sched_port_params *port_params)
{
const char *entry;
int j;
if (!cfg || !port_params)
return -1;
entry = cfg_get_entry(cfg, "port", "frame overhead");
if (entry)
port_params->frame_overhead = (uint32_t)atoi(entry);
entry = cfg_get_entry(cfg, "port", "number of subports per port");
if (entry)
port_params->n_subports_per_port = (uint32_t)atoi(entry);
entry = cfg_get_entry(cfg, "port", "number of pipes per subport");
if (entry)
port_params->n_pipes_per_subport = (uint32_t)atoi(entry);
entry = cfg_get_entry(cfg, "port", "queue sizes");
if (entry) {
char *next;
for(j = 0; j < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; j++) {
port_params->qsize[j] = (uint16_t)strtol(entry, &next, 10);
if (next == NULL)
break;
entry = next;
}
}
#ifdef RTE_SCHED_RED
for (j = 0; j < RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE; j++) {
char str[32];
/* Parse WRED min thresholds */
rte_snprintf(str, sizeof(str), "tc %d wred min", j);
entry = cfg_get_entry(cfg, "red", str);
if (entry) {
char *next;
int k;
/* for each packet colour (green, yellow, red) */
for (k = 0; k < e_RTE_METER_COLORS; k++) {
port_params->red_params[j][k].min_th
= (uint16_t)strtol(entry, &next, 10);
if (next == NULL)
break;
entry = next;
}
}
/* Parse WRED max thresholds */
rte_snprintf(str, sizeof(str), "tc %d wred max", j);
entry = cfg_get_entry(cfg, "red", str);
if (entry) {
char *next;
int k;
/* for each packet colour (green, yellow, red) */
for (k = 0; k < e_RTE_METER_COLORS; k++) {
port_params->red_params[j][k].max_th
= (uint16_t)strtol(entry, &next, 10);
if (next == NULL)
break;
entry = next;
}
}
/* Parse WRED inverse mark probabilities */
rte_snprintf(str, sizeof(str), "tc %d wred inv prob", j);
entry = cfg_get_entry(cfg, "red", str);
if (entry) {
char *next;
int k;
/* for each packet colour (green, yellow, red) */
for (k = 0; k < e_RTE_METER_COLORS; k++) {
port_params->red_params[j][k].maxp_inv
= (uint8_t)strtol(entry, &next, 10);
if (next == NULL)
break;
entry = next;
}
}
/* Parse WRED EWMA filter weights */
rte_snprintf(str, sizeof(str), "tc %d wred weight", j);
entry = cfg_get_entry(cfg, "red", str);
if (entry) {
char *next;
int k;
/* for each packet colour (green, yellow, red) */
for (k = 0; k < e_RTE_METER_COLORS; k++) {
port_params->red_params[j][k].wq_log2
= (uint8_t)strtol(entry, &next, 10);
if (next == NULL)
break;
entry = next;
}
}
}
#endif /* RTE_SCHED_RED */
return 0;
}
int
cfg_load_pipe(struct cfg_file *cfg, struct rte_sched_pipe_params *pipe_params)
{
int i, j;
char *next;
const char *entry;
int profiles;
if (!cfg || !pipe_params)
return -1;
profiles = cfg_num_sections(cfg, "pipe profile", sizeof("pipe profile") - 1);
port_params.n_pipe_profiles = profiles;
for (j = 0; j < profiles; j++) {
char pipe_name[32];
rte_snprintf(pipe_name, sizeof(pipe_name), "pipe profile %d", j);
entry = cfg_get_entry(cfg, pipe_name, "tb rate");
if (entry)
pipe_params[j].tb_rate = (uint32_t)atoi(entry);
entry = cfg_get_entry(cfg, pipe_name, "tb size");
if (entry)
pipe_params[j].tb_size = (uint32_t)atoi(entry);
entry = cfg_get_entry(cfg, pipe_name, "tc period");
if (entry)
pipe_params[j].tc_period = (uint32_t)atoi(entry);
entry = cfg_get_entry(cfg, pipe_name, "tc 0 rate");
if (entry)
pipe_params[j].tc_rate[0] = (uint32_t)atoi(entry);
entry = cfg_get_entry(cfg, pipe_name, "tc 1 rate");
if (entry)
pipe_params[j].tc_rate[1] = (uint32_t)atoi(entry);
entry = cfg_get_entry(cfg, pipe_name, "tc 2 rate");
if (entry)
pipe_params[j].tc_rate[2] = (uint32_t)atoi(entry);
entry = cfg_get_entry(cfg, pipe_name, "tc 3 rate");
if (entry)
pipe_params[j].tc_rate[3] = (uint32_t)atoi(entry);
#ifdef RTE_SCHED_SUBPORT_TC_OV
entry = cfg_get_entry(cfg, pipe_name, "tc 3 oversubscription weight");
if (entry)
pipe_params[j].tc_ov_weight = (uint8_t)atoi(entry);
#endif
entry = cfg_get_entry(cfg, pipe_name, "tc 0 wrr weights");
if (entry) {
for(i = 0; i < RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS; i++) {
pipe_params[j].wrr_weights[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE*0 + i] =
(uint8_t)strtol(entry, &next, 10);
if (next == NULL)
break;
entry = next;
}
}
entry = cfg_get_entry(cfg, pipe_name, "tc 1 wrr weights");
if (entry) {
for(i = 0; i < RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS; i++) {
pipe_params[j].wrr_weights[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE*1 + i] =
(uint8_t)strtol(entry, &next, 10);
if (next == NULL)
break;
entry = next;
}
}
entry = cfg_get_entry(cfg, pipe_name, "tc 2 wrr weights");
if (entry) {
for(i = 0; i < RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS; i++) {
pipe_params[j].wrr_weights[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE*2 + i] =
(uint8_t)strtol(entry, &next, 10);
if (next == NULL)
break;
entry = next;
}
}
entry = cfg_get_entry(cfg, pipe_name, "tc 3 wrr weights");
if (entry) {
for(i = 0; i < RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS; i++) {
pipe_params[j].wrr_weights[RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE*3 + i] =
(uint8_t)strtol(entry, &next, 10);
if (next == NULL)
break;
entry = next;
}
}
}
return 0;
}
int
cfg_load_subport(struct cfg_file *cfg, struct rte_sched_subport_params *subport_params)
{
const char *entry;
int i, j, k;
if (!cfg || !subport_params)
return -1;
memset(app_pipe_to_profile, -1, sizeof(app_pipe_to_profile));
for (i = 0; i < MAX_SCHED_SUBPORTS; i++) {
char sec_name[CFG_NAME_LEN];
rte_snprintf(sec_name, sizeof(sec_name), "subport %d", i);
if (cfg_has_section(cfg, sec_name)) {
entry = cfg_get_entry(cfg, sec_name, "tb rate");
if (entry)
subport_params[i].tb_rate = (uint32_t)atoi(entry);
entry = cfg_get_entry(cfg, sec_name, "tb size");
if (entry)
subport_params[i].tb_size = (uint32_t)atoi(entry);
entry = cfg_get_entry(cfg, sec_name, "tc period");
if (entry)
subport_params[i].tc_period = (uint32_t)atoi(entry);
entry = cfg_get_entry(cfg, sec_name, "tc 0 rate");
if (entry)
subport_params[i].tc_rate[0] = (uint32_t)atoi(entry);
entry = cfg_get_entry(cfg, sec_name, "tc 1 rate");
if (entry)
subport_params[i].tc_rate[1] = (uint32_t)atoi(entry);
entry = cfg_get_entry(cfg, sec_name, "tc 2 rate");
if (entry)
subport_params[i].tc_rate[2] = (uint32_t)atoi(entry);
entry = cfg_get_entry(cfg, sec_name, "tc 3 rate");
if (entry)
subport_params[i].tc_rate[3] = (uint32_t)atoi(entry);
int n_entries = cfg_section_num_entries(cfg, sec_name);
struct cfg_entry entries[n_entries];
cfg_section_entries(cfg, sec_name, entries, n_entries);
for (j = 0; j < n_entries; j++) {
if (strncmp("pipe", entries[j].name, sizeof("pipe") - 1) == 0) {
int profile;
char *tokens[2] = {NULL, NULL};
int n_tokens;
int begin, end;
profile = atoi(entries[j].value);
n_tokens = rte_strsplit(&entries[j].name[sizeof("pipe")],
strnlen(entries[j].name, CFG_NAME_LEN), tokens, 2, '-');
begin = atoi(tokens[0]);
if (n_tokens == 2)
end = atoi(tokens[1]);
else
end = begin;
if (end >= MAX_SCHED_PIPES || begin > end)
return -1;
for (k = begin; k <= end; k++) {
char profile_name[CFG_NAME_LEN];
rte_snprintf(profile_name, sizeof(profile_name),
"pipe profile %d", profile);
if (cfg_has_section(cfg, profile_name))
app_pipe_to_profile[i][k] = profile;
else
rte_exit(EXIT_FAILURE, "Wrong pipe profile %s\n",
entries[j].value);
}
}
}
}
}
return 0;
}