Commit f8214865 authored by Martin Hundebøll's avatar Martin Hundebøll Committed by Antonio Quartulli
Browse files

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: default avatarMartin Hundebøll <martin@hundeboll.net>
Signed-off-by: default avatarSven Eckelmann <sven@narfation.org>
parent 66a1b2bc
......@@ -211,6 +211,11 @@ The debug output can be changed at runtime using the file
will enable debug messages for when routes change.
Counters for different types of packets entering and leaving the
batman-adv module are available through ethtool:
# ethtool --statistics bat0
BATCTL
------
......
......@@ -196,8 +196,12 @@ static void bat_iv_ogm_send_to_if(struct forw_packet *forw_packet,
/* create clone because function is called more than once */
skb = skb_clone(forw_packet->skb, GFP_ATOMIC);
if (skb)
if (skb) {
batadv_inc_counter(bat_priv, BAT_CNT_MGMT_TX);
batadv_add_counter(bat_priv, BAT_CNT_MGMT_TX_BYTES,
skb->len + ETH_HLEN);
send_skb_packet(skb, hard_iface, broadcast_addr);
}
}
/* send a batman ogm packet */
......@@ -1203,6 +1207,10 @@ static int bat_iv_ogm_receive(struct sk_buff *skb,
if (bat_priv->bat_algo_ops->bat_ogm_emit != bat_iv_ogm_emit)
return NET_RX_DROP;
batadv_inc_counter(bat_priv, BAT_CNT_MGMT_RX);
batadv_add_counter(bat_priv, BAT_CNT_MGMT_RX_BYTES,
skb->len + ETH_HLEN);
packet_len = skb_headlen(skb);
ethhdr = (struct ethhdr *)skb_mac_header(skb);
packet_buff = skb->data;
......
......@@ -153,6 +153,8 @@ void mesh_free(struct net_device *soft_iface)
bla_free(bat_priv);
free_percpu(bat_priv->bat_counters);
atomic_set(&bat_priv->mesh_state, MESH_INACTIVE);
}
......
......@@ -138,6 +138,7 @@ enum dbg_level {
#include <linux/kthread.h> /* kernel threads */
#include <linux/pkt_sched.h> /* schedule types */
#include <linux/workqueue.h> /* workqueue */
#include <linux/percpu.h>
#include <linux/slab.h>
#include <net/sock.h> /* struct sock */
#include <linux/jiffies.h>
......@@ -242,4 +243,30 @@ static inline bool has_timed_out(unsigned long timestamp, unsigned int timeout)
_dummy > smallest_signed_int(_dummy); })
#define seq_after(x, y) seq_before(y, x)
/* Stop preemption on local cpu while incrementing the counter */
static inline void batadv_add_counter(struct bat_priv *bat_priv, size_t idx,
size_t count)
{
int cpu = get_cpu();
per_cpu_ptr(bat_priv->bat_counters, cpu)[idx] += count;
put_cpu();
}
#define batadv_inc_counter(b, i) batadv_add_counter(b, i, 1)
/* Sum and return the cpu-local counters for index 'idx' */
static inline uint64_t batadv_sum_counter(struct bat_priv *bat_priv, size_t idx)
{
uint64_t *counters;
int cpu;
int sum = 0;
for_each_possible_cpu(cpu) {
counters = per_cpu_ptr(bat_priv->bat_counters, cpu);
sum += counters[idx];
}
return sum;
}
#endif /* _NET_BATMAN_ADV_MAIN_H_ */
......@@ -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;
......
......@@ -45,6 +45,10 @@ static void bat_get_drvinfo(struct net_device *dev,
static u32 bat_get_msglevel(struct net_device *dev);
static void bat_set_msglevel(struct net_device *dev, u32 value);
static u32 bat_get_link(struct net_device *dev);
static void batadv_get_strings(struct net_device *dev, u32 stringset, u8 *data);
static void batadv_get_ethtool_stats(struct net_device *dev,
struct ethtool_stats *stats, u64 *data);
static int batadv_get_sset_count(struct net_device *dev, int stringset);
static const struct ethtool_ops bat_ethtool_ops = {
.get_settings = bat_get_settings,
......@@ -52,6 +56,9 @@ static const struct ethtool_ops bat_ethtool_ops = {
.get_msglevel = bat_get_msglevel,
.set_msglevel = bat_set_msglevel,
.get_link = bat_get_link,
.get_strings = batadv_get_strings,
.get_ethtool_stats = batadv_get_ethtool_stats,
.get_sset_count = batadv_get_sset_count,
};
int my_skb_head_push(struct sk_buff *skb, unsigned int len)
......@@ -399,13 +406,18 @@ struct net_device *softif_create(const char *name)
bat_priv->primary_if = NULL;
bat_priv->num_ifaces = 0;
bat_priv->bat_counters = __alloc_percpu(sizeof(uint64_t) * BAT_CNT_NUM,
__alignof__(uint64_t));
if (!bat_priv->bat_counters)
goto unreg_soft_iface;
ret = bat_algo_select(bat_priv, bat_routing_algo);
if (ret < 0)
goto unreg_soft_iface;
goto free_bat_counters;
ret = sysfs_add_meshif(soft_iface);
if (ret < 0)
goto unreg_soft_iface;
goto free_bat_counters;
ret = debugfs_add_meshif(soft_iface);
if (ret < 0)
......@@ -421,6 +433,8 @@ struct net_device *softif_create(const char *name)
debugfs_del_meshif(soft_iface);
unreg_sysfs:
sysfs_del_meshif(soft_iface);
free_bat_counters:
free_percpu(bat_priv->bat_counters);
unreg_soft_iface:
unregister_netdevice(soft_iface);
return NULL;
......@@ -486,3 +500,51 @@ static u32 bat_get_link(struct net_device *dev)
{
return 1;
}
/* Inspired by drivers/net/ethernet/dlink/sundance.c:1702
* Declare each description string in struct.name[] to get fixed sized buffer
* and compile time checking for strings longer than ETH_GSTRING_LEN.
*/
static const struct {
const char name[ETH_GSTRING_LEN];
} bat_counters_strings[] = {
{ "forward" },
{ "forward_bytes" },
{ "mgmt_tx" },
{ "mgmt_tx_bytes" },
{ "mgmt_rx" },
{ "mgmt_rx_bytes" },
{ "tt_request_tx" },
{ "tt_request_rx" },
{ "tt_response_tx" },
{ "tt_response_rx" },
{ "tt_roam_adv_tx" },
{ "tt_roam_adv_rx" },
};
static void batadv_get_strings(struct net_device *dev, uint32_t stringset,
uint8_t *data)
{
if (stringset == ETH_SS_STATS)
memcpy(data, bat_counters_strings,
sizeof(bat_counters_strings));
}
static void batadv_get_ethtool_stats(struct net_device *dev,
struct ethtool_stats *stats,
uint64_t *data)
{
struct bat_priv *bat_priv = netdev_priv(dev);
int i;
for (i = 0; i < BAT_CNT_NUM; i++)
data[i] = batadv_sum_counter(bat_priv, i);
}
static int batadv_get_sset_count(struct net_device *dev, int stringset)
{
if (stringset == ETH_SS_STATS)
return BAT_CNT_NUM;
return -EOPNOTSUPP;
}
......@@ -1356,6 +1356,8 @@ static int send_tt_request(struct bat_priv *bat_priv,
dst_orig_node->orig, neigh_node->addr,
(full_table ? 'F' : '.'));
batadv_inc_counter(bat_priv, BAT_CNT_TT_REQUEST_TX);
send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr);
ret = 0;
......@@ -1480,6 +1482,8 @@ static bool send_other_tt_response(struct bat_priv *bat_priv,
res_dst_orig_node->orig, neigh_node->addr,
req_dst_orig_node->orig, req_ttvn);
batadv_inc_counter(bat_priv, BAT_CNT_TT_RESPONSE_TX);
send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr);
ret = true;
goto out;
......@@ -1596,6 +1600,8 @@ static bool send_my_tt_response(struct bat_priv *bat_priv,
orig_node->orig, neigh_node->addr,
(tt_response->flags & TT_FULL_TABLE ? 'F' : '.'));
batadv_inc_counter(bat_priv, BAT_CNT_TT_RESPONSE_TX);
send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr);
ret = true;
goto out;
......@@ -1895,6 +1901,8 @@ static void send_roam_adv(struct bat_priv *bat_priv, uint8_t *client,
"Sending ROAMING_ADV to %pM (client %pM) via %pM\n",
orig_node->orig, client, neigh_node->addr);
batadv_inc_counter(bat_priv, BAT_CNT_TT_ROAM_ADV_TX);
send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr);
ret = 0;
......
......@@ -148,9 +148,26 @@ struct bcast_duplist_entry {
};
#endif
enum bat_counters {
BAT_CNT_FORWARD,
BAT_CNT_FORWARD_BYTES,
BAT_CNT_MGMT_TX,
BAT_CNT_MGMT_TX_BYTES,
BAT_CNT_MGMT_RX,
BAT_CNT_MGMT_RX_BYTES,
BAT_CNT_TT_REQUEST_TX,
BAT_CNT_TT_REQUEST_RX,
BAT_CNT_TT_RESPONSE_TX,
BAT_CNT_TT_RESPONSE_RX,
BAT_CNT_TT_ROAM_ADV_TX,
BAT_CNT_TT_ROAM_ADV_RX,
BAT_CNT_NUM,
};
struct bat_priv {
atomic_t mesh_state;
struct net_device_stats stats;
uint64_t __percpu *bat_counters; /* Per cpu counters */
atomic_t aggregated_ogms; /* boolean */
atomic_t bonding; /* boolean */
atomic_t fragmentation; /* boolean */
......
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