batman-adv: Add get_ethtool_stats() support

Added additional counters in a bat_stats structure, which are exported
through the ethtool api. The counters are specific to batman-adv and
includes:
 forwarded packets and bytes
 management packets and bytes (aggregated OGMs at this point)
 translation table packets

New counters are added by extending "enum bat_counters" in types.h and
adding corresponding  descriptive string(s) to bat_counters_strings in
soft-iface.c.

Counters are increased by calling batadv_add_counter() and incremented
by one by calling batadv_inc_counter().

Signed-off-by: Martin Hundebøll <martin@hundeboll.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index 015471d801b4..369604c99a46 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -600,6 +600,8 @@ int recv_tt_query(struct sk_buff *skb, struct hard_iface *recv_if)
 
         switch (tt_query->flags & TT_QUERY_TYPE_MASK) {
         case TT_REQUEST:
+                batadv_inc_counter(bat_priv, BAT_CNT_TT_REQUEST_RX);
+
                 /* If we cannot provide an answer the tt_request is
                  * forwarded */
                 if (!send_tt_response(bat_priv, tt_query)) {
@@ -612,6 +614,8 @@ int recv_tt_query(struct sk_buff *skb, struct hard_iface *recv_if)
                 }
                 break;
         case TT_RESPONSE:
+                batadv_inc_counter(bat_priv, BAT_CNT_TT_RESPONSE_RX);
+
                 if (is_my_mac(tt_query->dst)) {
                         /* packet needs to be linearized to access the TT
                          * changes */
@@ -665,6 +669,8 @@ int recv_roam_adv(struct sk_buff *skb, struct hard_iface *recv_if)
         if (is_broadcast_ether_addr(ethhdr->h_source))
                 goto out;
 
+        batadv_inc_counter(bat_priv, BAT_CNT_TT_ROAM_ADV_RX);
+
         roam_adv_packet = (struct roam_adv_packet *)skb->data;
 
         if (!is_my_mac(roam_adv_packet->dst))
@@ -872,6 +878,11 @@ static int route_unicast_packet(struct sk_buff *skb, struct hard_iface *recv_if)
         /* decrement ttl */
         unicast_packet->header.ttl--;
 
+        /* Update stats counter */
+        batadv_inc_counter(bat_priv, BAT_CNT_FORWARD);
+        batadv_add_counter(bat_priv, BAT_CNT_FORWARD_BYTES,
+                           skb->len + ETH_HLEN);
+
         /* route it */
         send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr);
         ret = NET_RX_SUCCESS;