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// SPDX-License-Identifier: GPL-2.0
#define _GNU_SOURCE
#include <stdio.h>
#include <string.h>
#include <ynl.h>
#include <net/if.h>
#include "netdev-user.h"
struct stat {
unsigned int ifc;
struct {
unsigned int cnt;
size_t refs, bytes;
} live[2];
size_t alloc_slow, alloc_fast, recycle_ring, recycle_cache;
};
struct stats_array {
unsigned int i, max;
struct stat *s;
};
static struct stat *find_ifc(struct stats_array *a, unsigned int ifindex)
{
unsigned int i;
for (i = 0; i < a->i; i++) {
if (a->s[i].ifc == ifindex)
return &a->s[i];
}
a->i++;
if (a->i == a->max) {
a->max *= 2;
a->s = reallocarray(a->s, a->max, sizeof(*a->s));
}
a->s[i].ifc = ifindex;
return &a->s[i];
}
static void count(struct stat *s, unsigned int l,
struct netdev_page_pool_get_rsp *pp)
{
s->live[l].cnt++;
if (pp->_present.inflight)
s->live[l].refs += pp->inflight;
if (pp->_present.inflight_mem)
s->live[l].bytes += pp->inflight_mem;
}
int main(int argc, char **argv)
{
struct netdev_page_pool_stats_get_list *pp_stats;
struct netdev_page_pool_get_list *pools;
struct stats_array a = {};
struct ynl_error yerr;
struct ynl_sock *ys;
ys = ynl_sock_create(&ynl_netdev_family, &yerr);
if (!ys) {
fprintf(stderr, "YNL: %s\n", yerr.msg);
return 1;
}
a.max = 128;
a.s = calloc(a.max, sizeof(*a.s));
if (!a.s)
goto err_close;
pools = netdev_page_pool_get_dump(ys);
if (!pools)
goto err_free;
ynl_dump_foreach(pools, pp) {
struct stat *s = find_ifc(&a, pp->ifindex);
count(s, 1, pp);
if (pp->_present.detach_time)
count(s, 0, pp);
}
netdev_page_pool_get_list_free(pools);
pp_stats = netdev_page_pool_stats_get_dump(ys);
if (!pp_stats)
goto err_free;
ynl_dump_foreach(pp_stats, pp) {
struct stat *s = find_ifc(&a, pp->info.ifindex);
if (pp->_present.alloc_fast)
s->alloc_fast += pp->alloc_fast;
if (pp->_present.alloc_refill)
s->alloc_fast += pp->alloc_refill;
if (pp->_present.alloc_slow)
s->alloc_slow += pp->alloc_slow;
if (pp->_present.recycle_ring)
s->recycle_ring += pp->recycle_ring;
if (pp->_present.recycle_cached)
s->recycle_cache += pp->recycle_cached;
}
netdev_page_pool_stats_get_list_free(pp_stats);
for (unsigned int i = 0; i < a.i; i++) {
char ifname[IF_NAMESIZE];
struct stat *s = &a.s[i];
const char *name;
double recycle;
if (!s->ifc) {
name = "<orphan>\t";
} else {
name = if_indextoname(s->ifc, ifname);
if (name)
printf("%8s", name);
printf("[%d]\t", s->ifc);
}
printf("page pools: %u (zombies: %u)\n",
s->live[1].cnt, s->live[0].cnt);
printf("\t\trefs: %zu bytes: %zu (refs: %zu bytes: %zu)\n",
s->live[1].refs, s->live[1].bytes,
s->live[0].refs, s->live[0].bytes);
/* We don't know how many pages are sitting in cache and ring
* so we will under-count the recycling rate a bit.
*/
recycle = (double)(s->recycle_ring + s->recycle_cache) /
(s->alloc_fast + s->alloc_slow) * 100;
printf("\t\trecycling: %.1lf%% (alloc: %zu:%zu recycle: %zu:%zu)\n",
recycle, s->alloc_slow, s->alloc_fast,
s->recycle_ring, s->recycle_cache);
}
ynl_sock_destroy(ys);
return 0;
err_free:
free(a.s);
err_close:
fprintf(stderr, "YNL: %s\n", ys->err.msg);
ynl_sock_destroy(ys);
return 2;
}
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