net/mlx5: add out of buffer counter to extended statistic

[dpdk.git] / drivers / net / mlx5 / mlx5_ethdev.c

diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
index 2145965..6b64f44 100644 (file)
--- a/drivers/net/mlx5/mlx5_ethdev.c
+++ b/drivers/net/mlx5/mlx5_ethdev.c
@@ -233,6 +233,23 @@ try_dev_id:
        return 0;
 }
 
+/**
+ * Check if the counter is located on ib counters file.
+ *
+ * @param[in] cntr
+ *   Counter name.
+ *
+ * @return
+ *   1 if counter is located on ib counters file , 0 otherwise.
+ */
+int
+priv_is_ib_cntr(const char *cntr)
+{
+       if (!strcmp(cntr, "out_of_buffer"))
+               return 1;
+       return 0;
+}
+
 /**
  * Read from sysfs entry.
  *
@@ -260,10 +277,15 @@ priv_sysfs_read(const struct priv *priv, const char *entry,
        if (priv_get_ifname(priv, &ifname))
                return -1;
 
-       MKSTR(path, "%s/device/net/%s/%s", priv->ctx->device->ibdev_path,
-             ifname, entry);
-
-       file = fopen(path, "rb");
+       if (priv_is_ib_cntr(entry)) {
+               MKSTR(path, "%s/ports/1/hw_counters/%s",
+                     priv->ctx->device->ibdev_path, entry);
+               file = fopen(path, "rb");
+       } else {
+               MKSTR(path, "%s/device/net/%s/%s",
+                     priv->ctx->device->ibdev_path, ifname, entry);
+               file = fopen(path, "rb");
+       }
        if (file == NULL)
                return -1;
        ret = fread(buf, 1, size, file);
@@ -468,6 +490,30 @@ priv_get_mtu(struct priv *priv, uint16_t *mtu)
        return 0;
 }
 
+/**
+ * Read device counter from sysfs.
+ *
+ * @param priv
+ *   Pointer to private structure.
+ * @param name
+ *   Counter name.
+ * @param[out] cntr
+ *   Counter output buffer.
+ *
+ * @return
+ *   0 on success, -1 on failure and errno is set.
+ */
+int
+priv_get_cntr_sysfs(struct priv *priv, const char *name, uint64_t *cntr)
+{
+       unsigned long ulong_ctr;
+
+       if (priv_get_sysfs_ulong(priv, name, &ulong_ctr) == -1)
+               return -1;
+       *cntr = ulong_ctr;
+       return 0;
+}
+
 /**
  * Set device MTU.
  *