static int
parse_port_pair(void *opts, char* key, char* value)
{
struct net *net = (struct net *)opts;
struct addrinfo addr;
uint8_t* p;
if (key == 0 || *key == 0)
return -1;
#define PARSE_IP4(ip_addr) \
do { \
if (value == 0 || *value == 0) \
return -1; \
if (parse_address(value, &addr, AF_INET) != 0) \
return -1; \
p = (uint8_t*)&((struct sockaddr_in*)addr.ai_addr)->sin_addr; \
IP4_ADDR(&(ip_addr), *p, *(p+1), *(p+2), *(p+3)); \
} while(0)
if (!strcmp(key,"port_id")) {
if (value == 0 || *value == 0)
return -1;
net->port_id = rte_str_to_size(value);
return 0;
} else if (!strcmp(key,"name")) {
if (value == 0 || *value == 0)
return -1;
net->name = value;
return 0;
} else if (!strcmp(key,"addr")) {
PARSE_IP4(net->ip_addr);
return 0;
} else if (!strcmp(key,"netmask")) {
PARSE_IP4(net->netmask);
return 0;
} else if (!strcmp(key,"gw")) {
PARSE_IP4(net->gw);
return 0;
} else {
return -1;
}
#undef PARSE_IP4
}
static uint64_t
get_default_hp_size(void)
{
const char proc_meminfo[] = "/proc/meminfo";
const char str_hugepagesz[] = "Hugepagesize:";
unsigned hugepagesz_len = sizeof(str_hugepagesz) - 1;
char buffer[256];
unsigned long long size = 0;
FILE *fd = fopen(proc_meminfo, "r");
if (fd == NULL)
rte_panic("Cannot open %s\n", proc_meminfo);
while(fgets(buffer, sizeof(buffer), fd)){
if (strncmp(buffer, str_hugepagesz, hugepagesz_len) == 0){
size = rte_str_to_size(&buffer[hugepagesz_len]);
break;
}
}
fclose(fd);
if (size == 0)
rte_panic("Cannot get default hugepage size from %s\n", proc_meminfo);
return size;
}
/*
* when we initialize the hugepage info, everything goes
* to socket 0 by default. it will later get sorted by memory
* initialization procedure.
*/
int
eal_hugepage_info_init(void)
{
const char dirent_start_text[] = "hugepages-";
const size_t dirent_start_len = sizeof(dirent_start_text) - 1;
unsigned i, num_sizes = 0;
DIR *dir = opendir(sys_dir_path);
if (dir == NULL)
rte_panic("Cannot open directory %s to read system hugepage info\n",
sys_dir_path);
struct dirent *dirent = readdir(dir);
while(dirent != NULL){
if (strncmp(dirent->d_name, dirent_start_text, dirent_start_len) == 0){
struct hugepage_info *hpi = \
&internal_config.hugepage_info[num_sizes];
hpi->hugepage_sz = rte_str_to_size(&dirent->d_name[dirent_start_len]);
hpi->hugedir = get_hugepage_dir(hpi->hugepage_sz);
/* first, check if we have a mountpoint */
if (hpi->hugedir == NULL){
int32_t num_pages;
if ((num_pages = get_num_hugepages(dirent->d_name)) > 0)
RTE_LOG(INFO, EAL, "%u hugepages of size %llu reserved, "\
"but no mounted hugetlbfs found for that size\n",
(unsigned)num_pages,
(unsigned long long)hpi->hugepage_sz);
} else {
/* try to obtain a writelock */
hpi->lock_descriptor = open(hpi->hugedir, O_RDONLY);
/* if blocking lock failed */
if (flock(hpi->lock_descriptor, LOCK_EX) == -1) {
RTE_LOG(CRIT, EAL, "Failed to lock hugepage directory!\n");
return -1;
}
/* clear out the hugepages dir from unused pages */
if (clear_hugedir(hpi->hugedir) == -1)
return -1;
/* for now, put all pages into socket 0,
* later they will be sorted */
hpi->num_pages[0] = get_num_hugepages(dirent->d_name);
#ifndef RTE_ARCH_X86_64
/* for 32-bit systems, limit number of hugepages to 1GB per page size */
hpi->num_pages[0] = RTE_MIN(hpi->num_pages[0],
RTE_PGSIZE_1G / hpi->hugepage_sz);
#endif
num_sizes++;
}
}
dirent = readdir(dir);
}
closedir(dir);
internal_config.num_hugepage_sizes = num_sizes;
/* sort the page directory entries by size, largest to smallest */
for (i = 0; i < num_sizes; i++){
unsigned j;
for (j = i+1; j < num_sizes; j++)
if (internal_config.hugepage_info[j-1].hugepage_sz < \
internal_config.hugepage_info[j].hugepage_sz)
swap_hpi(&internal_config.hugepage_info[j-1],
&internal_config.hugepage_info[j]);
}
/* now we have all info, check we have at least one valid size */
for (i = 0; i < num_sizes; i++)
if (internal_config.hugepage_info[i].hugedir != NULL &&
internal_config.hugepage_info[i].num_pages[0] > 0)
return 0;
/* no valid hugepage mounts available, return error */
return -1;
}
static const char *
get_hugepage_dir(uint64_t hugepage_sz)
{
enum proc_mount_fieldnames {
DEVICE = 0,
MOUNTPT,
FSTYPE,
OPTIONS,
_FIELDNAME_MAX
};
static uint64_t default_size = 0;
const char proc_mounts[] = "/proc/mounts";
const char hugetlbfs_str[] = "hugetlbfs";
const size_t htlbfs_str_len = sizeof(hugetlbfs_str) - 1;
const char pagesize_opt[] = "pagesize=";
const size_t pagesize_opt_len = sizeof(pagesize_opt) - 1;
const char split_tok = ' ';
char *splitstr[_FIELDNAME_MAX];
char buf[BUFSIZ];
char *retval = NULL;
FILE *fd = fopen(proc_mounts, "r");
if (fd == NULL)
rte_panic("Cannot open %s\n", proc_mounts);
if (default_size == 0)
default_size = get_default_hp_size();
while (fgets(buf, sizeof(buf), fd)){
if (rte_strsplit(buf, sizeof(buf), splitstr, _FIELDNAME_MAX,
split_tok) != _FIELDNAME_MAX) {
RTE_LOG(ERR, EAL, "Error parsing %s\n", proc_mounts);
break; /* return NULL */
}
/* we have a specified --huge-dir option, only examine that dir */
if (internal_config.hugepage_dir != NULL &&
strcmp(splitstr[MOUNTPT], internal_config.hugepage_dir) != 0)
continue;
if (strncmp(splitstr[FSTYPE], hugetlbfs_str, htlbfs_str_len) == 0){
const char *pagesz_str = strstr(splitstr[OPTIONS], pagesize_opt);
/* if no explicit page size, the default page size is compared */
if (pagesz_str == NULL){
if (hugepage_sz == default_size){
retval = strdup(splitstr[MOUNTPT]);
break;
}
}
/* there is an explicit page size, so check it */
else {
uint64_t pagesz = rte_str_to_size(&pagesz_str[pagesize_opt_len]);
if (pagesz == hugepage_sz) {
retval = strdup(splitstr[MOUNTPT]);
break;
}
}
} /* end if strncmp hugetlbfs */
} /* end while fgets */
fclose(fd);
return retval;
}
/*
* when we initialize the hugepage info, everything goes
* to socket 0 by default. it will later get sorted by memory
* initialization procedure.
*/
int
eal_hugepage_info_init(void)
{
const char dirent_start_text[] = "hugepages-";
const size_t dirent_start_len = sizeof(dirent_start_text) - 1;
unsigned i, num_sizes = 0;
DIR *dir;
struct dirent *dirent;
dir = opendir(sys_dir_path);
if (dir == NULL)
rte_panic("Cannot open directory %s to read system hugepage "
"info\n", sys_dir_path);
for (dirent = readdir(dir); dirent != NULL; dirent = readdir(dir)) {
struct hugepage_info *hpi;
if (strncmp(dirent->d_name, dirent_start_text,
dirent_start_len) != 0)
continue;
if (num_sizes >= MAX_HUGEPAGE_SIZES)
break;
hpi = &internal_config.hugepage_info[num_sizes];
hpi->hugepage_sz =
rte_str_to_size(&dirent->d_name[dirent_start_len]);
hpi->hugedir = get_hugepage_dir(hpi->hugepage_sz);
/* first, check if we have a mountpoint */
if (hpi->hugedir == NULL) {
uint32_t num_pages;
num_pages = get_num_hugepages(dirent->d_name);
if (num_pages > 0)
RTE_LOG(INFO, EAL,
"%" PRIu32 " hugepages of size "
"%" PRIu64 " reserved, but no mounted "
"hugetlbfs found for that size\n",
num_pages, hpi->hugepage_sz);
continue;
}
/* try to obtain a writelock */
hpi->lock_descriptor = open(hpi->hugedir, O_RDONLY);
/* if blocking lock failed */
if (flock(hpi->lock_descriptor, LOCK_EX) == -1) {
RTE_LOG(CRIT, EAL,
"Failed to lock hugepage directory!\n");
break;
}
/* clear out the hugepages dir from unused pages */
if (clear_hugedir(hpi->hugedir) == -1)
break;
/* for now, put all pages into socket 0,
* later they will be sorted */
hpi->num_pages[0] = get_num_hugepages(dirent->d_name);
#ifndef RTE_ARCH_64
/* for 32-bit systems, limit number of hugepages to
* 1GB per page size */
hpi->num_pages[0] = RTE_MIN(hpi->num_pages[0],
RTE_PGSIZE_1G / hpi->hugepage_sz);
#endif
num_sizes++;
}
closedir(dir);
/* something went wrong, and we broke from the for loop above */
if (dirent != NULL)
return -1;
internal_config.num_hugepage_sizes = num_sizes;
/* sort the page directory entries by size, largest to smallest */
qsort(&internal_config.hugepage_info[0], num_sizes,
sizeof(internal_config.hugepage_info[0]), compare_hpi);
/* now we have all info, check we have at least one valid size */
for (i = 0; i < num_sizes; i++)
if (internal_config.hugepage_info[i].hugedir != NULL &&
internal_config.hugepage_info[i].num_pages[0] > 0)
return 0;
/* no valid hugepage mounts available, return error */
return -1;
}
/*
* returns the configuration setting for the memzone size as a size_t value
*/
static inline size_t
get_malloc_memzone_size(void)
{
return rte_str_to_size(MALLOC_MEMZONE_SIZE);
}