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Get real-time netlink information rather than using the cache.

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This commit is contained in:
Nikos Mavrogiannopoulos
2014-01-30 22:15:42 +01:00
parent 4ce8365873
commit a51de1cb0c
1 changed files with 3 additions and 16 deletions
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19
src/occtl-nl.c
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@@ -34,7 +34,6 @@
#include <inttypes.h>
static struct nl_sock *sock = NULL;
static struct nl_cache *cache = NULL;
static int nl_failed = 0;
static int open_netlink(void)
@@ -58,19 +57,12 @@ int err;
goto error;
}
if (rtnl_link_alloc_cache(sock, AF_UNSPEC, &cache) < 0) {
fprintf(stderr, "nl: failed to alloc cache");
goto error;
}
return 0;
error:
if (sock != NULL) {
nl_socket_free(sock);
sock = NULL;
}
if (cache != NULL)
nl_cache_free(cache);
nl_failed = 1;
return -1;
@@ -116,7 +108,7 @@ void print_iface_stats(const char *iface, time_t since, FILE * out)
uint64_t tx, rx;
char buf1[32], buf2[32];
time_t diff = time(0) - since;
int if_idx;
int ret;
struct rtnl_link *rlink = NULL;
if (iface == NULL || iface[0] == 0)
@@ -125,17 +117,12 @@ void print_iface_stats(const char *iface, time_t since, FILE * out)
if (open_netlink() < 0)
return;
if (!(if_idx = rtnl_link_name2i(cache, iface))) {
ret = rtnl_link_get_kernel(sock, 0, iface, &rlink);
if (ret < 0) {
fprintf(stderr, "nl: cannot find %s\n", iface);
return;
}
rlink = rtnl_link_get (cache, if_idx);
if (rlink == NULL) {
fprintf(stderr, "nl: cannot get rlink\n");
return;
}
rx = rtnl_link_get_stat(rlink, RTNL_LINK_RX_BYTES);
tx = rtnl_link_get_stat(rlink, RTNL_LINK_TX_BYTES);