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mac80211-hwsim: add ethtool stats support

Browse Source 
This gives a view into packet activity at the virtual radio
level.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Ben Greear 2014-10-22 12:22:58 -07:00 committed by Johannes Berg
parent 0fc1e0495f
commit 2155c3f823
1 changed files with 74 additions and 1 deletions
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75
drivers/net/wireless/mac80211_hwsim.c
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@ -450,6 +450,14 @@ struct mac80211_hwsim_data {
s64 bcn_delta;
/* absolute beacon transmission time. Used to cover up "tx" delay. */
u64 abs_bcn_ts;
/* Stats */
u64 tx_pkts;
u64 rx_pkts;
u64 tx_bytes;
u64 rx_bytes;
u64 tx_dropped;
u64 tx_failed;
};
@ -865,8 +873,10 @@ static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
/* If the queue contains MAX_QUEUE skb's drop some */
if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
/* Droping until WARN_QUEUE level */
while (skb_queue_len(&data->pending) >= WARN_QUEUE)
while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
data->tx_dropped++;
}
}
skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
@ -921,11 +931,14 @@ static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
/* Enqueue the packet */
skb_queue_tail(&data->pending, my_skb);
data->tx_pkts++;
data->tx_bytes += my_skb->len;
return;
nla_put_failure:
printk(KERN_DEBUG "mac80211_hwsim: error occurred in %s\n", __func__);
ieee80211_free_txskb(hw, my_skb);
data->tx_failed++;
}
static bool hwsim_chans_compat(struct ieee80211_channel *c1,
@ -1071,6 +1084,8 @@ static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
rx_status.mactime = now + data2->tsf_offset;
memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
data2->rx_pkts++;
data2->rx_bytes += nskb->len;
ieee80211_rx_irqsafe(data2->hw, nskb);
}
spin_unlock(&hwsim_radio_lock);
@ -1138,6 +1153,8 @@ static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
return mac80211_hwsim_tx_frame_nl(hw, skb, _portid);
/* NO wmediumd detected, perfect medium simulation */
data->tx_pkts++;
data->tx_bytes += skb->len;
ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
if (ack && skb->len >= 16) {
@ -1921,6 +1938,57 @@ static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
hwsim_check_chanctx_magic(ctx);
}
static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
"tx_pkts_nic",
"tx_bytes_nic",
"rx_pkts_nic",
"rx_bytes_nic",
"d_tx_dropped",
"d_tx_failed",
"d_ps_mode",
"d_group",
"d_tx_power",
};
#define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
u32 sset, u8 *data)
{
if (sset == ETH_SS_STATS)
memcpy(data, *mac80211_hwsim_gstrings_stats,
sizeof(mac80211_hwsim_gstrings_stats));
}
static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, int sset)
{
if (sset == ETH_SS_STATS)
return MAC80211_HWSIM_SSTATS_LEN;
return 0;
}
static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ethtool_stats *stats, u64 *data)
{
struct mac80211_hwsim_data *ar = hw->priv;
int i = 0;
data[i++] = ar->tx_pkts;
data[i++] = ar->tx_bytes;
data[i++] = ar->rx_pkts;
data[i++] = ar->rx_bytes;
data[i++] = ar->tx_dropped;
data[i++] = ar->tx_failed;
data[i++] = ar->ps;
data[i++] = ar->group;
data[i++] = ar->power_level;
WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
}
static const struct ieee80211_ops mac80211_hwsim_ops = {
.tx = mac80211_hwsim_tx,
.start = mac80211_hwsim_start,
@ -1944,6 +2012,9 @@ static const struct ieee80211_ops mac80211_hwsim_ops = {
.flush = mac80211_hwsim_flush,
.get_tsf = mac80211_hwsim_get_tsf,
.set_tsf = mac80211_hwsim_set_tsf,
.get_et_sset_count = mac80211_hwsim_get_et_sset_count,
.get_et_stats = mac80211_hwsim_get_et_stats,
.get_et_strings = mac80211_hwsim_get_et_strings,
};
static struct ieee80211_ops mac80211_hwsim_mchan_ops;
@ -2394,6 +2465,8 @@ static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
data2->rx_pkts++;
data2->rx_bytes += skb->len;
ieee80211_rx_irqsafe(data2->hw, skb);
return 0;