2 // Copyright (c) 2010-2017 Intel Corporation
4 // Licensed under the Apache License, Version 2.0 (the "License");
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
8 // http://www.apache.org/licenses/LICENSE-2.0
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
25 #include <rte_ether.h>
26 #include <rte_string_fns.h>
31 #include "parse_utils.h"
32 #include "prox_globals.h"
36 #include "prox_lua_types.h"
38 #define MAX_NB_PORT_NAMES PROX_MAX_PORTS
39 #define MAX_LEN_PORT_NAME 24
40 #define MAX_LEN_VAR_NAME 24
41 #define MAX_LEN_VAL 512
42 #define MAX_NB_VARS 32
44 #if MAX_WT_PER_LB > MAX_INDEX
45 #error MAX_WT_PER_LB > MAX_INDEX
48 /* The CPU topology of the system is used to parse "socket
49 notation". This notation allows to refer to cores on specific
50 sockets and the hyper-thread of those cores. The CPU topology is
51 loaded only if the socket notation is used at least once. */
54 int socket[MAX_SOCKETS][RTE_MAX_LCORE][2];
55 uint32_t n_cores[MAX_SOCKETS];
59 struct cpu_topology cpu_topo;
63 char name[MAX_LEN_PORT_NAME];
66 static struct port_name port_names[MAX_NB_PORT_NAMES];
67 static uint8_t nb_port_names;
71 char name[MAX_LEN_VAR_NAME];
72 char val[MAX_LEN_VAL];
75 static struct var vars[MAX_NB_VARS];
76 static uint8_t nb_vars;
78 static char format_err_str[256];
79 static const char *err_str = "";
81 const char *get_parse_err(void)
86 static int read_cpu_topology(void);
88 static int parse_core(int *socket, int *core, int *ht, const char* str);
90 static void set_errf(const char *format, ...)
94 vsnprintf(format_err_str, sizeof(format_err_str), format, ap);
96 err_str = format_err_str;
99 static struct var *var_lookup(const char *name)
101 for (uint8_t i = 0; i < nb_vars; ++i) {
102 if (!strcmp(name, vars[i].name)) {
109 static int parse_single_var(char *val, size_t len, const char *name)
113 match = var_lookup(name);
115 if (strlen(match->val) + 1 > len) {
116 set_errf("Variables '%s' with value '%s' is too long\n",
117 match->name, match->val);
120 strncpy(val, match->val, len);
124 /* name + 1 to skip leading '$' */
125 if (lua_to_string(prox_lua(), GLOBAL, name + 1, val, len) >= 0)
129 set_errf("Variable '%s' not defined!", name);
133 /* Replace $... and each occurrence of ${...} with variable values */
134 int parse_vars(char *val, size_t len, const char *name)
136 static char result[MAX_CFG_STRING_LEN];
137 static char cur_var[MAX_CFG_STRING_LEN];
139 size_t name_len = strlen(name);
140 enum parse_vars_state {NO_VAR, WHOLE_VAR, INLINE_VAR} state = NO_VAR;
141 size_t result_len = 0;
142 size_t start_var = 0;
144 memset(result, 0, sizeof(result));
145 PROX_PANIC(name_len > sizeof(result), "\tUnable to parse var %s: too long\n", name);
147 for (size_t i = 0; i < name_len; ++i) {
150 if (name[i] == '$') {
151 if (i != name_len - 1 && name[i + 1] == '{') {
156 else if (i == 0 && i != name_len - 1) {
160 set_errf("Invalid variable syntax");
165 result[result_len++] = name[i];
169 if (name[i] == '}') {
171 size_t var_len = i - start_var;
173 set_errf("Empty variable are not allowed");
177 strncpy(&cur_var[1], &name[start_var], var_len);
178 cur_var[1 + var_len] = 0;
179 if (parse_single_var(parsed, sizeof(parsed), cur_var)) {
182 strcpy(&result[result_len], parsed);
183 result_len += strlen(parsed);
186 else if (i == name_len - 1) {
187 set_errf("Invalid variable syntax, expected '}'.");
192 if (i == name_len - 1) {
193 return parse_single_var(val, len, name);
198 strncpy(val, result, len);
203 int parse_int_mask(uint32_t *val, uint32_t *mask, const char *str2)
205 char str[MAX_STR_LEN_PROC];
208 if (parse_vars(str, sizeof(str), str2))
211 mask_str = strchr(str, '&');
213 if (mask_str == NULL) {
214 set_errf("Missing '&' when parsing mask");
220 if (parse_int(val, str))
222 if (parse_int(mask, mask_str + 1))
228 int parse_range(uint32_t* lo, uint32_t* hi, const char *str2)
230 char str[MAX_STR_LEN_PROC];
233 if (parse_vars(str, sizeof(str), str2))
236 dash = strstr(str, "-");
239 set_errf("Missing '-' when parsing mask");
245 if (parse_int(lo, str))
247 if (parse_int(hi, dash + 1))
250 int64_t tmp = strtol(str, 0, 0);
251 if (tmp > UINT32_MAX) {
252 set_errf("Integer is bigger than %u", UINT32_MAX);
256 set_errf("Integer is negative");
262 tmp = strtol(dash + 1, 0, 0);
263 if (tmp > UINT32_MAX) {
264 set_errf("Integer is bigger than %u", UINT32_MAX);
268 set_errf("Integer is negative");
275 set_errf("Low boundary is above high boundary in range");
282 int parse_ip(uint32_t *addr, const char *str2)
284 char str[MAX_STR_LEN_PROC];
286 if (parse_vars(str, sizeof(str), str2))
291 if (strlen(str) > MAX_STR_LEN_PROC) {
292 set_errf("String too long (max supported: %d)", MAX_STR_LEN_PROC);
296 if (4 != rte_strsplit(str, strlen(str), ip_parts, 5, '.')) {
297 set_errf("Expecting 4 octets in ip.");
302 for (uint8_t i = 0; i < 4; ++i) {
303 val = atoi(ip_parts[i]);
305 set_errf("Maximum value for octet is 255 but octet %u is %u", i, val);
308 *addr = *addr << 8 | val;
313 int parse_ip4_cidr(struct ip4_subnet *val, const char *str2)
315 char str[MAX_STR_LEN_PROC];
319 if (parse_vars(str, sizeof(str), str2))
322 slash = strstr(str, "/");
325 set_errf("Missing '/' when parsing CIDR notation");
330 prefix = atoi(slash + 1);
331 val->prefix = prefix;
334 set_errf("Prefix %d is too big", prefix);
338 set_errf("Prefix %d is too small", prefix);
340 if (parse_ip(&val->ip, str))
343 /* Apply mask making all bits outside the prefix zero */
344 val->ip &= ((int)(1 << 31)) >> (prefix - 1);
349 int parse_ip6_cidr(struct ip6_subnet *val, const char *str2)
351 char str[MAX_STR_LEN_PROC];
355 if (parse_vars(str, sizeof(str), str2))
358 slash = strstr(str, "/");
361 set_errf("Missing '/' when parsing CIDR notation");
366 prefix = atoi(slash + 1);
367 val->prefix = prefix;
369 parse_ip6((struct ipv6_addr *)&val->ip, str);
371 /* Apply mask making all bits outside the prefix zero */
376 while (p >= prefix) {
382 if (prefix % 8 != 0) {
383 val->ip[15-cnt] &= ((int8_t)(1 << 7)) >> ((prefix %8) - 1);
389 int parse_ip6(struct ipv6_addr *addr, const char *str2)
391 char str[MAX_STR_LEN_PROC];
394 if (parse_vars(str, sizeof(str), str2))
397 uint8_t ret = rte_strsplit(str, strlen(str), addr_parts, 9, ':');
400 set_errf("Invalid IPv6 address");
406 for (uint8_t i = 0, j = 0; i < ret; ++i, ++j) {
407 if (*addr_parts[i] == 0) {
409 set_errf("Can only omit zeros once");
416 uint16_t w = strtoll(addr_parts[i], NULL, 16);
417 addr->bytes[j++] = (w >> 8) & 0xff;
418 addr->bytes[j] = w & 0xff;
424 int parse_mac(struct ether_addr *ether_addr, const char *str2)
426 char str[MAX_STR_LEN_PROC];
429 if (parse_vars(str, sizeof(str), str2))
432 uint8_t ret = rte_strsplit(str, strlen(str), addr_parts, 7, ':');
435 set_errf("Invalid MAC address format");
439 for (uint8_t i = 0; i < 6; ++i) {
440 if (2 != strlen(addr_parts[i])) {
441 set_errf("Invalid MAC address format");
444 ether_addr->addr_bytes[i] = strtol(addr_parts[i], NULL, 16);
450 char* get_cfg_key(char *str)
452 char *pkey = strchr(str, '=');
459 /* remove leading spaces */
460 while (isspace(*pkey)) {
463 if (*pkey == '\0') { /* an empty key */
470 void strip_spaces(char *strings[], const uint32_t count)
472 for (uint32_t i = 0; i < count; ++i) {
473 while (isspace(strings[i][0])) {
476 size_t len = strlen(strings[i]);
478 while (len && isspace(strings[i][len - 1])) {
479 strings[i][len - 1] = '\0';
485 int is_virtualized(void)
487 char buf[1024]= "/proc/cpuinfo";
489 FILE* fd = fopen(buf, "r");
491 set_errf("Could not open %s", buf);
494 while (fgets(buf, sizeof(buf), fd) != NULL) {
495 if ((strstr(buf, "flags") != NULL) && (strstr(buf, "hypervisor") != NULL))
502 static int get_phys_core(uint32_t *dst, int lcore_id)
506 snprintf(buf, sizeof(buf), "/sys/devices/system/cpu/cpu%u/topology/thread_siblings_list", lcore_id);
507 FILE* ht_fd = fopen(buf, "r");
510 set_errf("Could not open cpu topology %s", buf);
514 if (fgets(buf, sizeof(buf), ht_fd) == NULL) {
515 set_errf("Could not read cpu topology");
520 uint32_t list[2] = {-1,-1};
521 parse_list_set(list, buf, 2);
528 static int get_socket(uint32_t core_id, uint32_t *socket)
532 snprintf(buf, sizeof(buf), "/sys/devices/system/cpu/cpu%u/topology/physical_package_id", core_id);
533 FILE* fd = fopen(buf, "r");
540 if (fgets(buf, sizeof(buf), fd) != NULL) {
546 *socket = (ret == -1 ? 0 : ret);
551 int lcore_to_socket_core_ht(uint32_t lcore_id, char *dst, size_t len)
553 if (cpu_topo.n_sockets == 0) {
554 if (read_cpu_topology() == -1) {
559 for (uint32_t s = 0; s < cpu_topo.n_sockets; s++) {
560 for (uint32_t i = 0; i < cpu_topo.n_cores[s]; ++i) {
561 if ((uint32_t)cpu_topo.socket[s][i][0] == lcore_id) {
562 snprintf(dst, len, "%us%u", i, s);
564 } else if ((uint32_t)cpu_topo.socket[s][i][1] == lcore_id) {
565 snprintf(dst, len, "%us%uh", i, s);
574 static int get_lcore_id(uint32_t socket_id, uint32_t core_id, int ht)
576 if (cpu_topo.n_sockets == 0) {
577 if (read_cpu_topology() == -1) {
582 if (socket_id == UINT32_MAX)
585 if (socket_id >= MAX_SOCKETS) {
586 set_errf("Socket id %d too high (max allowed is %d)", MAX_SOCKETS);
589 if (core_id >= RTE_MAX_LCORE) {
590 set_errf("Core id %d too high (max allowed is %d)", RTE_MAX_LCORE);
593 if (socket_id >= cpu_topo.n_sockets) {
594 set_errf("Current CPU topology reported that there are %u CPU sockets, CPU topology = %u socket(s), %u physical cores per socket, %u thread(s) per physical core",
595 cpu_topo.n_sockets, cpu_topo.n_sockets, cpu_topo.n_cores[0], cpu_topo.socket[0][0][1] == -1? 1: 2);
598 if (core_id >= cpu_topo.n_cores[socket_id]) {
599 set_errf("Core %u on socket %u does not exist, CPU topology = %u socket(s), %u physical cores per socket, %u thread(s) per physical core",
600 core_id, socket_id, cpu_topo.n_sockets, cpu_topo.n_cores[0], cpu_topo.socket[socket_id][0][1] == -1? 1: 2);
603 if (cpu_topo.socket[socket_id][core_id][!!ht] == -1) {
604 set_errf("Core %u %son socket %u has no hyper-thread, CPU topology = %u socket(s), %u physical cores per socket, %u thread(s) per physical core",
605 core_id, ht ? "(hyper-thread) " : "", socket_id, cpu_topo.n_sockets, cpu_topo.n_cores[0], cpu_topo.socket[socket_id][core_id][1] == -1? 1: 2);
609 return cpu_topo.socket[socket_id][core_id][!!ht];
612 /* Returns 0 on success, negative on error. Parses the syntax XsYh
613 where sYh is optional. If sY is specified, Y is stored in the
614 socket argument. If, in addition, h is specified, *ht is set to
615 1. In case the input is only a number, socket and ht are set to
617 static int parse_core(int *socket, int *core, int *ht, const char* str)
625 *core = strtol(str, &end, 10);
631 if (cpu_topo.n_sockets == 0) {
632 if (read_cpu_topology() == -1) {
638 *socket = strtol(end, &end, 10);
639 if (*socket >= MAX_SOCKETS) {
640 set_errf("Socket id %d too high (max allowed is %d)", *socket, MAX_SOCKETS - 1);
653 set_errf("Can't find hyper-thread since socket has not been specified");
660 static int parse_task(const char *str, uint32_t *socket, uint32_t *core, uint32_t *task, uint32_t *ht, enum ctrl_type *type)
662 const char *str_beg = str;
665 *core = strtol(str, &end, 10);
667 set_errf("Expected number to in core-task definition:\n"
668 "\t(i.e. 5s1t0 for task 0 on core 5 on socket 1)\n"
669 "\tHave: '%s'.", end);
685 *socket = strtol(str, &end, 10);
694 *task = strtol(str, &end, 10);
697 *type = CTRL_TYPE_PKT;
700 else if (*str == 'm') {
701 *type = CTRL_TYPE_MSG;
707 set_errf("Can't find hyper-thread since socket has not been specified");
712 *task = strtol(str, &end, 10);
715 *type = CTRL_TYPE_PKT;
718 else if (*str == 'm') {
719 *type = CTRL_TYPE_MSG;
724 return str - str_beg;
727 static int core_task_set_add(struct core_task_set *val, uint32_t core, uint32_t task, enum ctrl_type type)
729 if (val->n_elems == sizeof(val->core_task)/sizeof(val->core_task[0]))
732 val->core_task[val->n_elems].core = core;
733 val->core_task[val->n_elems].task = task;
734 val->core_task[val->n_elems].type = type;
740 int parse_task_set(struct core_task_set *cts, const char *str2)
742 char str[MAX_STR_LEN_PROC];
744 if (parse_vars(str, sizeof(str), str2))
751 uint32_t socket_beg, core_beg, task_beg, ht_beg,
752 socket_end, core_end, task_end, ht_end;
753 enum ctrl_type type_beg, type_end;
754 uint32_t task_group_start = -1;
756 while (*str3 && *str3 != ' ') {
758 task_group_start = cts->n_elems;
762 if (*str3 == ')' && *(str3 + 1) == 't') {
765 uint32_t t = strtol(str3, &end, 10);
766 enum ctrl_type type = 0;
770 type = CTRL_TYPE_PKT;
773 else if (*str3 == 'm') {
774 type = CTRL_TYPE_MSG;
778 for (uint32_t i = task_group_start; i < cts->n_elems; ++i) {
779 cts->core_task[i].task = t;
780 cts->core_task[i].type = type;
784 ret = parse_task(str3, &socket_beg, &core_beg, &task_beg, &ht_beg, &type_beg);
788 socket_end = socket_beg;
796 ret = parse_task(str3, &socket_end, &core_end, &task_end, &ht_end, &type_end);
805 if (socket_end != socket_beg) {
806 set_errf("Same socket must be used in range syntax.");
808 } else if (ht_beg != ht_end) {
809 set_errf("If 'h' syntax is in range, it must be specified everywhere.\n");
811 } else if (task_end != task_beg && core_end != core_beg) {
812 set_errf("Same task must be used in range syntax when cores are different.\n");
814 } else if (task_end < task_beg) {
815 set_errf("Task for end of range must be higher than task for beginning of range.\n");
817 } else if (type_end != type_beg) {
818 set_errf("Task type for end of range must be the same as task type for beginning.\n");
820 } else if (core_end < core_beg) {
821 set_errf("Core for end of range must be higher than core for beginning of range.\n");
825 for (uint32_t j = core_beg; j <= core_end; ++j) {
826 if (socket_beg != UINT32_MAX && ht_beg != UINT32_MAX)
827 ret = get_lcore_id(socket_beg, j, ht_beg);
832 for (uint32_t k = task_beg; k <= task_end; ++k) {
833 core_task_set_add(cts, ret, k, type_beg);
840 int parse_list_set(uint32_t *list, const char *str2, uint32_t max_list)
842 char str[MAX_STR_LEN_PROC];
843 char *parts[MAX_STR_LEN_PROC];
845 if (parse_vars(str, sizeof(str), str2))
848 int n_parts = rte_strsplit(str, strlen(str), parts, MAX_STR_LEN_PROC, ',');
849 size_t list_count = 0;
851 for (int i = 0; i < n_parts; ++i) {
852 char *cur_part = parts[i];
854 int n_sub_parts = rte_strsplit(cur_part, strlen(cur_part), sub_parts, 3, '-');
855 int socket1, socket2;
860 if (n_sub_parts == 1) {
861 if (parse_core(&socket1, &core1, &ht1, sub_parts[0]))
867 } else if (n_sub_parts == 2) {
868 if (parse_core(&socket1, &core1, &ht1, sub_parts[0]))
870 if (parse_core(&socket2, &core2, &ht2, sub_parts[1]))
872 } else if (n_sub_parts >= 3) {
873 set_errf("Multiple '-' characters in range syntax found");
876 set_errf("Invalid list syntax");
880 if (socket1 != socket2) {
881 set_errf("Same socket must be used in range syntax");
884 else if (ht1 != ht2) {
885 set_errf("If 'h' syntax is in range, it must be specified everywhere.");
889 for (int cur_core = core1; cur_core <= core2; ++cur_core) {
893 effective_core = get_lcore_id(socket1, cur_core, ht1);
895 effective_core = cur_core;
897 if (list_count >= max_list) {
898 set_errf("Too many elements in list\n");
901 list[list_count++] = effective_core;
908 int parse_kmg(uint32_t* val, const char *str2)
910 char str[MAX_STR_LEN_PROC];
912 if (parse_vars(str, sizeof(str), str2))
915 char c = str[strlen(str) - 1];
933 /* only support optional KMG suffix */
934 if (c < '0' || c > '9') {
935 set_errf("Unknown syntax for KMG suffix '%c' (expected K, M or G)", c);
943 int parse_bool(uint32_t* val, const char *str2)
945 char str[MAX_STR_LEN_PROC];
947 if (parse_vars(str, sizeof(str), str2))
950 if (!strcmp(str, "yes")) {
954 else if (!strcmp(str, "no")) {
958 set_errf("Unknown syntax for bool '%s' (expected yes or no)", str);
962 int parse_flag(uint32_t* val, uint32_t flag, const char *str2)
964 char str[MAX_STR_LEN_PROC];
966 if (parse_vars(str, sizeof(str), str2))
970 if (parse_bool(&tmp, str))
981 int parse_int(uint32_t* val, const char *str2)
983 char str[MAX_STR_LEN_PROC];
985 if (parse_vars(str, sizeof(str), str2))
988 int64_t tmp = strtol(str, 0, 0);
989 if (tmp > UINT32_MAX) {
990 set_errf("Integer is bigger than %u", UINT32_MAX);
994 set_errf("Integer is negative");
1002 int parse_float(float* val, const char *str2)
1004 char str[MAX_STR_LEN_PROC];
1006 if (parse_vars(str, sizeof(str), str2))
1009 float tmp = strtof(str, 0);
1010 if ((tmp >= HUGE_VALF) || (tmp <= -HUGE_VALF)) {
1011 set_errf("Unable to parse float\n");
1019 int parse_u64(uint64_t* val, const char *str2)
1021 char str[MAX_STR_LEN_PROC];
1023 if (parse_vars(str, sizeof(str), str2))
1027 uint64_t tmp = strtoul(str, NULL, 0);
1029 set_errf("Invalid u64 '%s' (%s)", str, strerror(errno));
1037 int parse_str(char* dst, const char *str2, size_t max_len)
1039 char str[MAX_STR_LEN_PROC];
1041 if (parse_vars(str, sizeof(str), str2))
1044 if (strlen(str) > max_len - 1) {
1045 set_errf("String too long (%u > %u)", strlen(str), max_len - 1);
1049 strncpy(dst, str, max_len);
1053 int parse_path(char *dst, const char *str, size_t max_len)
1055 if (parse_str(dst, str, max_len))
1057 if (access(dst, F_OK)) {
1058 set_errf("Invalid file '%s' (%s)", dst, strerror(errno));
1064 int parse_port_name(uint32_t *val, const char *str2)
1066 char str[MAX_STR_LEN_PROC];
1068 if (parse_vars(str, sizeof(str), str2))
1071 for (uint8_t i = 0; i < nb_port_names; ++i) {
1072 if (!strcmp(str, port_names[i].name)) {
1073 *val = port_names[i].id;
1077 set_errf("Port with name %s not defined", str);
1081 int parse_port_name_list(uint32_t *val, uint32_t* tot, uint8_t max_vals, const char *str2)
1083 char *elements[PROX_MAX_PORTS + 1];
1084 char str[MAX_STR_LEN_PROC];
1088 if (parse_str(str, str2, sizeof(str)))
1091 ret = rte_strsplit(str, strlen(str), elements, PROX_MAX_PORTS + 1, ',');
1093 if (ret == PROX_MAX_PORTS + 1 || ret > max_vals) {
1094 set_errf("Too many ports in port list");
1098 strip_spaces(elements, ret);
1099 for (uint8_t i = 0; i < ret; ++i) {
1100 if (parse_port_name(&cur, elements[i])) {
1111 int parse_remap(uint8_t *mapping, const char *str)
1113 char *elements[PROX_MAX_PORTS + 1];
1114 char *elements2[PROX_MAX_PORTS + 1];
1115 char str_cpy[MAX_STR_LEN_PROC];
1119 if (strlen(str) > MAX_STR_LEN_PROC) {
1120 set_errf("String too long (max supported: %d)", MAX_STR_LEN_PROC);
1123 strncpy(str_cpy, str, MAX_STR_LEN_PROC);
1125 ret = rte_strsplit(str_cpy, strlen(str_cpy), elements, PROX_MAX_PORTS + 1, ',');
1127 set_errf("Invalid remap syntax");
1130 else if (ret > PROX_MAX_PORTS) {
1131 set_errf("Too many remaps");
1135 strip_spaces(elements, ret);
1136 for (uint8_t i = 0; i < ret; ++i) {
1137 ret2 = rte_strsplit(elements[i], strlen(elements[i]), elements2, PROX_MAX_PORTS + 1, '|');
1138 strip_spaces(elements2, ret2);
1139 if (ret2 > PROX_MAX_PORTS) {
1140 set_errf("Too many remaps");
1143 for (uint8_t j = 0; j < ret2; ++j) {
1144 if (parse_port_name(&val, elements2[j])) {
1148 /* This port will be mapped to the i'th
1149 element specified before remap=. */
1157 int add_port_name(uint32_t val, const char *str2)
1159 char str[MAX_STR_LEN_PROC];
1161 if (parse_vars(str, sizeof(str), str2))
1164 struct port_name* pn;
1166 if (nb_port_names == MAX_NB_PORT_NAMES) {
1167 set_errf("Too many ports defined (can define %d)", MAX_NB_PORT_NAMES);
1171 for (uint8_t i = 0; i < nb_port_names; ++i) {
1172 /* each port has to have a unique name*/
1173 if (!strcmp(str, port_names[i].name)) {
1174 set_errf("Port with name %s is already defined", str);
1179 pn = &port_names[nb_port_names];
1180 strncpy(pn->name, str, sizeof(pn->name));
1187 int set_self_var(const char *str)
1189 for (uint8_t i = 0; i < nb_vars; ++i) {
1190 if (!strcmp("$self", vars[i].name)) {
1191 sprintf(vars[i].val, "%s", str);
1196 struct var *v = &vars[nb_vars];
1198 strncpy(v->name, "$self", strlen("$self"));
1199 sprintf(v->val, "%s", str);
1205 int add_var(const char* name, const char *str2, uint8_t cli)
1209 char str[MAX_STR_LEN_PROC];
1211 if (parse_vars(str, sizeof(str), str2))
1214 if (strlen(name) == 0 || strlen(name) == 1) {
1215 set_errf("Can't define variables with empty name");
1219 if (name[0] != '$') {
1220 set_errf("Each variable should start with the $ character");
1224 if (nb_vars == MAX_NB_VARS) {
1225 set_errf("Too many variables defined (can define %d)", MAX_NB_VARS);
1229 for (uint8_t i = 0; i < nb_vars; ++i) {
1230 if (!strcmp(name, vars[i].name)) {
1232 /* Variables defined through program arguments
1234 if (!cli && vars[i].cli) {
1238 set_errf("Variable with name %s is already defined", name);
1244 PROX_PANIC(strlen(name) > sizeof(v->name), "\tUnable to parse var %s: too long\n", name);
1245 PROX_PANIC(strlen(str) > sizeof(v->val), "\tUnable to parse var %s=%s: too long\n", name,str);
1246 strncpy(v->name, name, sizeof(v->name));
1247 strncpy(v->val, str, sizeof(v->val));
1254 static int read_cores_present(uint32_t *cores, int max_cores, int *res)
1256 FILE* fd = fopen("/sys/devices/system/cpu/present", "r");
1260 set_errf("Could not opening file /sys/devices/system/cpu/present");
1264 if (fgets(buf, sizeof(buf), fd) == NULL) {
1265 set_errf("Could not read cores range");
1271 int ret = parse_list_set(cores, buf, max_cores);
1280 static int set_dummy_topology(void)
1284 for (int s = 0; s < MAX_SOCKETS; s++) {
1285 for (int i = 0; i < 32; ++i) {
1286 cpu_topo.socket[s][i][0] = core_count++;
1287 cpu_topo.socket[s][i][1] = core_count++;
1288 cpu_topo.n_cores[s]++;
1291 cpu_topo.n_sockets = MAX_SOCKETS;
1295 static int read_cpu_topology(void)
1297 if (cpu_topo.n_sockets != 0)
1299 if (prox_cfg.flags & DSF_USE_DUMMY_CPU_TOPO)
1300 return set_dummy_topology();
1302 uint32_t cores[RTE_MAX_LCORE];
1305 if (read_cores_present(cores, sizeof(cores)/sizeof(cores[0]), &n_cores) != 0)
1308 for (int s = 0; s < MAX_SOCKETS; s++) {
1309 for (int i = 0; i < RTE_MAX_LCORE; ++i) {
1310 cpu_topo.socket[s][i][0] = -1;
1311 cpu_topo.socket[s][i][1] = -1;
1315 for (int i = 0; i < n_cores; ++i) {
1316 uint32_t socket_id, lcore_id, phys;
1318 lcore_id = cores[i];
1319 if (get_socket(lcore_id, &socket_id) != 0)
1321 if (socket_id >= MAX_SOCKETS) {
1322 set_errf("Can't read CPU topology due too high socket ID (max allowed is %d)",
1326 if (socket_id >= cpu_topo.n_sockets) {
1327 cpu_topo.n_sockets = socket_id + 1;
1329 if (get_phys_core(&phys, lcore_id) != 0)
1331 if (phys >= RTE_MAX_LCORE) {
1332 set_errf("Core ID %u too high", phys);
1336 if (cpu_topo.socket[socket_id][phys][0] == -1) {
1337 cpu_topo.socket[socket_id][phys][0] = lcore_id;
1338 cpu_topo.n_cores[socket_id]++;
1340 else if (cpu_topo.socket[socket_id][phys][1] == -1) {
1341 cpu_topo.socket[socket_id][phys][1] = lcore_id;
1344 set_errf("Too many core siblings");
1349 /* There can be holes in the cpu_topo description at this
1350 point. An example for this is a CPU topology where the
1351 lowest core ID of 2 hyper-threads is always an even
1352 number. Before finished up this phase, compact all the
1353 cores to make the numbers consecutive. */
1355 for (uint32_t i = 0; i < cpu_topo.n_sockets; ++i) {
1356 int spread = 0, compact = 0;
1357 while (cpu_topo.socket[i][spread][0] == -1)
1360 for (uint32_t c = 0; c < cpu_topo.n_cores[i]; ++c) {
1361 cpu_topo.socket[i][compact][0] = cpu_topo.socket[i][spread][0];
1362 cpu_topo.socket[i][compact][1] = cpu_topo.socket[i][spread][1];
1366 while (cpu_topo.socket[i][spread][0] == -1)
1374 static int bit_len_valid(uint32_t len, const char *str)
1377 set_errf("Maximum random length is 32, but length of '%s' is %zu\n", str, len);
1381 plog_err("Random should be multiple of 8 long\n");
1385 plog_err("Random should be at least 1 byte long\n");
1391 int parse_random_str(uint32_t *mask, uint32_t *fixed, uint32_t *len, const char *str)
1393 const size_t len_bits = strlen(str);
1395 if (!bit_len_valid(len_bits, str))
1400 *len = len_bits / 8;
1402 for (uint32_t j = 0; j < len_bits; ++j) {
1403 /* Store in the lower bits the value of the rand string (note
1404 that these are the higher bits in LE). */
1407 *mask |= 1 << (len_bits - 1 - j);
1410 *fixed |= 1 << (len_bits - 1 - j);
1415 set_errf("Unexpected %c\n", str[j]);