Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 463 insertions, 0 deletions

diff --git a/src/seastar/dpdk/lib/librte_cfgfile/rte_cfgfile.c b/src/seastar/dpdk/lib/librte_cfgfile/rte_cfgfile.c
new file mode 100644
index 00000000..b54a523d
--- /dev/null
+++ b/src/seastar/dpdk/lib/librte_cfgfile/rte_cfgfile.c
@@ -0,0 +1,463 @@
+/*-
+ *   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_common.h>
+#include <rte_string_fns.h>
+
+#include "rte_cfgfile.h"
+
+struct rte_cfgfile_section {
+	char name[CFG_NAME_LEN];
+	int num_entries;
+	struct rte_cfgfile_entry *entries[0];
+};
+
+struct rte_cfgfile {
+	int flags;
+	int num_sections;
+	struct rte_cfgfile_section *sections[0];
+};
+
+/** 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
+
+/**
+ * Default cfgfile load parameters.
+ */
+static const struct rte_cfgfile_parameters default_cfgfile_params = {
+	.comment_character = CFG_DEFAULT_COMMENT_CHARACTER,
+};
+
+/**
+ * Defines the list of acceptable comment characters supported by this
+ * library.
+ */
+static const char valid_comment_chars[] = {
+	'!',
+	'#',
+	'%',
+	';',
+	'@'
+};
+
+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;
+}
+
+static int
+rte_cfgfile_check_params(const struct rte_cfgfile_parameters *params)
+{
+	unsigned int valid_comment;
+	unsigned int i;
+
+	if (!params) {
+		printf("Error - missing cfgfile parameters\n");
+		return -EINVAL;
+	}
+
+	valid_comment = 0;
+	for (i = 0; i < RTE_DIM(valid_comment_chars); i++) {
+		if (params->comment_character == valid_comment_chars[i]) {
+			valid_comment = 1;
+			break;
+		}
+	}
+
+	if (valid_comment == 0)	{
+		printf("Error - invalid comment characters %c\n",
+		       params->comment_character);
+		return -ENOTSUP;
+	}
+
+	return 0;
+}
+
+struct rte_cfgfile *
+rte_cfgfile_load(const char *filename, int flags)
+{
+	return rte_cfgfile_load_with_params(filename, flags,
+					    &default_cfgfile_params);
+}
+
+struct rte_cfgfile *
+rte_cfgfile_load_with_params(const char *filename, int flags,
+			     const struct rte_cfgfile_parameters *params)
+{
+	int allocated_sections = CFG_ALLOC_SECTION_BATCH;
+	int allocated_entries = 0;
+	int curr_section = -1;
+	int curr_entry = -1;
+	char buffer[CFG_NAME_LEN + CFG_VALUE_LEN + 4] = {0};
+	int lineno = 0;
+	struct rte_cfgfile *cfg = NULL;
+
+	if (rte_cfgfile_check_params(params))
+		return 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);
+
+	if (flags & CFG_FLAG_GLOBAL_SECTION) {
+		curr_section = 0;
+		allocated_entries = CFG_ALLOC_ENTRY_BATCH;
+		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 memory for global section\n");
+			goto error1;
+		}
+
+		snprintf(cfg->sections[curr_section]->name,
+				 sizeof(cfg->sections[0]->name), "GLOBAL");
+	}
+
+	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;
+		}
+		pos = memchr(buffer, params->comment_character, len);
+		if (pos != 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 '['"
+					"character 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 rte_cfgfile *n_cfg = realloc(cfg,
+					sizeof(*cfg) + sizeof(cfg->sections[0])
+					* allocated_sections);
+				if (n_cfg == NULL) {
+					curr_section--;
+					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;
+			}
+
+			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 rte_cfgfile_section *sect =
+				cfg->sections[curr_section];
+			int n;
+			char *split[2] = {NULL};
+			n = rte_strsplit(buffer, sizeof(buffer), split, 2, '=');
+			if (flags & CFG_FLAG_EMPTY_VALUES) {
+				if ((n < 1) || (n > 2)) {
+					printf("Error at line %d - cannot split string, n=%d\n",
+					       lineno, n);
+					goto error1;
+				}
+			} else {
+				if (n != 2) {
+					printf("Error at line %d - cannot split string, n=%d\n",
+					       lineno, n);
+					goto error1;
+				}
+			}
+
+			curr_entry++;
+			if (curr_entry == allocated_entries) {
+				allocated_entries += CFG_ALLOC_ENTRY_BATCH;
+				struct rte_cfgfile_section *n_sect = realloc(
+					sect, sizeof(*sect) +
+					sizeof(sect->entries[0]) *
+					allocated_entries);
+				if (n_sect == NULL) {
+					curr_entry--;
+					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 rte_cfgfile_entry *entry = sect->entries[
+				curr_entry];
+			snprintf(entry->name, sizeof(entry->name), "%s",
+				split[0]);
+			snprintf(entry->value, sizeof(entry->value), "%s",
+				 split[1] ? 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->num_sections = curr_section + 1;
+	/* curr_section will still be -1 if we have an empty file */
+	if (curr_section >= 0)
+		cfg->sections[curr_section]->num_entries = curr_entry + 1;
+	return cfg;
+
+error1:
+	cfg->num_sections = curr_section + 1;
+	if (curr_section >= 0)
+		cfg->sections[curr_section]->num_entries = curr_entry + 1;
+	rte_cfgfile_close(cfg);
+error2:
+	fclose(f);
+	return NULL;
+}
+
+
+int rte_cfgfile_close(struct rte_cfgfile *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
+rte_cfgfile_num_sections(struct rte_cfgfile *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
+rte_cfgfile_sections(struct rte_cfgfile *cfg, char *sections[],
+	int max_sections)
+{
+	int i;
+
+	for (i = 0; i < cfg->num_sections && i < max_sections; i++)
+		snprintf(sections[i], CFG_NAME_LEN, "%s",
+		cfg->sections[i]->name);
+
+	return i;
+}
+
+static const struct rte_cfgfile_section *
+_get_section(struct rte_cfgfile *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
+rte_cfgfile_has_section(struct rte_cfgfile *cfg, const char *sectionname)
+{
+	return _get_section(cfg, sectionname) != NULL;
+}
+
+int
+rte_cfgfile_section_num_entries(struct rte_cfgfile *cfg,
+	const char *sectionname)
+{
+	const struct rte_cfgfile_section *s = _get_section(cfg, sectionname);
+	if (s == NULL)
+		return -1;
+	return s->num_entries;
+}
+
+
+int
+rte_cfgfile_section_entries(struct rte_cfgfile *cfg, const char *sectionname,
+		struct rte_cfgfile_entry *entries, int max_entries)
+{
+	int i;
+	const struct rte_cfgfile_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;
+}
+
+int
+rte_cfgfile_section_entries_by_index(struct rte_cfgfile *cfg, int index,
+		char *sectionname,
+		struct rte_cfgfile_entry *entries, int max_entries)
+{
+	int i;
+	const struct rte_cfgfile_section *sect;
+
+	if (index < 0 || index >= cfg->num_sections)
+		return -1;
+
+	sect = cfg->sections[index];
+	snprintf(sectionname, CFG_NAME_LEN, "%s", sect->name);
+	for (i = 0; i < max_entries && i < sect->num_entries; i++)
+		entries[i] = *sect->entries[i];
+	return i;
+}
+
+const char *
+rte_cfgfile_get_entry(struct rte_cfgfile *cfg, const char *sectionname,
+		const char *entryname)
+{
+	int i;
+	const struct rte_cfgfile_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
+rte_cfgfile_has_entry(struct rte_cfgfile *cfg, const char *sectionname,
+		const char *entryname)
+{
+	return rte_cfgfile_get_entry(cfg, sectionname, entryname) != NULL;
+}