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ipnetns: make net namespace cache variable size

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Save some space by using variable size for nsid cache elements.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
This commit is contained in:
Stephen Hemminger 2015-08-12 08:35:54 -07:00
parent 7f9dddbe7d
commit 2f29d6bb50
1 changed files with 3 additions and 3 deletions
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6
ip/ipnetns.c
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@ -139,7 +139,7 @@ struct nsid_cache {
struct hlist_node nsid_hash; struct hlist_node nsid_hash;
struct hlist_node name_hash; struct hlist_node name_hash;
int nsid; int nsid;
char name[NAME_MAX]; char name[0];
}; };
#define NSIDMAP_SIZE 128 #define NSIDMAP_SIZE 128
@ -164,7 +164,7 @@ static struct nsid_cache *netns_map_get_by_nsid(int nsid)
return NULL; return NULL;
} }
static int netns_map_add(int nsid, char *name) static int netns_map_add(int nsid, const char *name)
{ {
struct nsid_cache *c; struct nsid_cache *c;
uint32_t h; uint32_t h;
@ -172,7 +172,7 @@ static int netns_map_add(int nsid, char *name)
if (netns_map_get_by_nsid(nsid) != NULL) if (netns_map_get_by_nsid(nsid) != NULL)
return -EEXIST; return -EEXIST;
c = malloc(sizeof(*c)); c = malloc(sizeof(*c) + strlen(name));
if (c == NULL) { if (c == NULL) {
perror("malloc"); perror("malloc");
return -ENOMEM; return -ENOMEM;