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af_xdp: fix NUMA node parsing

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Non-NUMA systems might report -1 as NUMA node.

Type: fix

Change-Id: I092c817ea670009d6f530cc70ad13d45e15fd363
Signed-off-by: Benoît Ganne <bganne@cisco.com>
This commit is contained in:
Benoît Ganne
2020-10-19 09:49:09 +02:00
committed by Damjan Marion
parent 5004b0d2f2
commit 4317b8efb1
1 changed files with 9 additions and 11 deletions
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20
src/plugins/af_xdp/device.c
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@ -22,6 +22,7 @@
#include <vlib/vlib.h>
#include <vlib/unix/unix.h>
#include <vlib/pci/pci.h>
#include <vppinfra/linux/sysfs.h>
#include <vppinfra/unix.h>
#include <vnet/ethernet/ethernet.h>
#include "af_xdp.h"
@ -260,21 +261,18 @@ err0:
static int
af_xdp_get_numa (const char *ifname)
{
FILE *fptr;
char *path;
clib_error_t *err;
int numa;
char *s;
s = (char *) format (0, "/sys/class/net/%s/device/numa_node%c", ifname, 0);
fptr = fopen (s, "rb");
vec_free (s);
if (!fptr)
return 0;
if (fscanf (fptr, "%d\n", &numa) != 1)
path =
(char *) format (0, "/sys/class/net/%s/device/numa_node%c", ifname, 0);
err = clib_sysfs_read (path, "%d", &numa);
if (err || numa < 0)
numa = 0;
fclose (fptr);
clib_error_free (err);
vec_free (path);
return numa;
}