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ixgbevf: add BP_EXTENDED_STATS for CONFIG_NET_RX_BUSY_POLL 

This patch adds the extended statistics similar to the ixgbe driver. These
statistics keep track of how often the busy polling yields, as well as how many
packets are cleaned or missed by the polling routine.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Jacob Keller 2013-09-21 06:24:25 +00:00 committed by Jeff Kirsher
parent c777cdfa4e
commit 3b5dca262f
3 changed files with 60 additions and 0 deletions
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32
drivers/net/ethernet/intel/ixgbevf/ethtool.c
View File

@ -74,6 +74,14 @@ static const struct ixgbe_stats ixgbe_gstrings_stats[] = {
zero_base)},
{"tx_csum_offload_ctxt", IXGBEVF_STAT(hw_csum_tx_good, zero_base,
zero_base)},
#ifdef BP_EXTENDED_STATS
{"rx_bp_poll_yield", IXGBEVF_STAT(bp_rx_yields, zero_base, zero_base)},
{"rx_bp_cleaned", IXGBEVF_STAT(bp_rx_cleaned, zero_base, zero_base)},
{"rx_bp_misses", IXGBEVF_STAT(bp_rx_missed, zero_base, zero_base)},
{"tx_bp_napi_yield", IXGBEVF_STAT(bp_tx_yields, zero_base, zero_base)},
{"tx_bp_cleaned", IXGBEVF_STAT(bp_tx_cleaned, zero_base, zero_base)},
{"tx_bp_misses", IXGBEVF_STAT(bp_tx_missed, zero_base, zero_base)},
#endif
};
#define IXGBE_QUEUE_STATS_LEN 0
@ -391,6 +399,30 @@ static void ixgbevf_get_ethtool_stats(struct net_device *netdev,
{
struct ixgbevf_adapter *adapter = netdev_priv(netdev);
int i;
#ifdef BP_EXTENDED_STATS
u64 rx_yields = 0, rx_cleaned = 0, rx_missed = 0,
tx_yields = 0, tx_cleaned = 0, tx_missed = 0;
for (i = 0; i < adapter->num_rx_queues; i++) {
rx_yields += adapter->rx_ring[i].bp_yields;
rx_cleaned += adapter->rx_ring[i].bp_cleaned;
rx_yields += adapter->rx_ring[i].bp_yields;
}
for (i = 0; i < adapter->num_tx_queues; i++) {
tx_yields += adapter->tx_ring[i].bp_yields;
tx_cleaned += adapter->tx_ring[i].bp_cleaned;
tx_yields += adapter->tx_ring[i].bp_yields;
}
adapter->bp_rx_yields = rx_yields;
adapter->bp_rx_cleaned = rx_cleaned;
adapter->bp_rx_missed = rx_missed;
adapter->bp_tx_yields = tx_yields;
adapter->bp_tx_cleaned = tx_cleaned;
adapter->bp_tx_missed = tx_missed;
#endif
ixgbevf_update_stats(adapter);
for (i = 0; i < IXGBE_GLOBAL_STATS_LEN; i++) {

22
drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
View File

@ -40,6 +40,7 @@
#ifdef CONFIG_NET_RX_BUSY_POLL
#include <net/busy_poll.h>
#define BP_EXTENDED_STATS
#endif
/* wrapper around a pointer to a socket buffer,
@ -80,6 +81,11 @@ struct ixgbevf_ring {
struct u64_stats_sync syncp;
u64 hw_csum_rx_error;
u64 hw_csum_rx_good;
#ifdef BP_EXTENDED_STATS
u64 bp_yields;
u64 bp_misses;
u64 bp_cleaned;
#endif
u16 head;
u16 tail;
@ -181,6 +187,9 @@ static inline bool ixgbevf_qv_lock_napi(struct ixgbevf_q_vector *q_vector)
WARN_ON(q_vector->state & IXGBEVF_QV_STATE_NAPI);
q_vector->state |= IXGBEVF_QV_STATE_NAPI_YIELD;
rc = false;
#ifdef BP_EXTENDED_STATS
q_vector->tx.ring->bp_yields++;
#endif
} else {
/* we don't care if someone yielded */
q_vector->state = IXGBEVF_QV_STATE_NAPI;
@ -213,6 +222,9 @@ static inline bool ixgbevf_qv_lock_poll(struct ixgbevf_q_vector *q_vector)
if ((q_vector->state & IXGBEVF_QV_LOCKED)) {
q_vector->state |= IXGBEVF_QV_STATE_POLL_YIELD;
rc = false;
#ifdef BP_EXTENDED_STATS
q_vector->rx.ring->bp_yields++;
#endif
} else {
/* preserve yield marks */
q_vector->state |= IXGBEVF_QV_STATE_POLL;
@ -358,6 +370,16 @@ struct ixgbevf_adapter {
unsigned int tx_ring_count;
unsigned int rx_ring_count;
#ifdef BP_EXTENDED_STATS
u64 bp_rx_yields;
u64 bp_rx_cleaned;
u64 bp_rx_missed;
u64 bp_tx_yields;
u64 bp_tx_cleaned;
u64 bp_tx_missed;
#endif
u32 link_speed;
bool link_up;

6
drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
View File

@ -648,6 +648,12 @@ static int ixgbevf_busy_poll_recv(struct napi_struct *napi)
ixgbevf_for_each_ring(ring, q_vector->rx) {
found = ixgbevf_clean_rx_irq(q_vector, ring, 4);
#ifdef BP_EXTENDED_STATS
if (found)
ring->bp_cleaned += found;
else
ring->bp_misses++;
#endif
if (found)
break;
}