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Commit 3b5dca26 authored by Jacob Keller's avatar Jacob Keller Committed by Jeff Kirsher
Browse files

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: default avatarJacob Keller <jacob.e.keller@intel.com>
Tested-by: default avatarPhil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent c777cdfa

drivers/net/ethernet/intel/ixgbevf/ethtool.c

+32 −0
Original line number Diff line number Diff line
@@ -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++) {

drivers/net/ethernet/intel/ixgbevf/ixgbevf.h

+22 −0
Original line number Diff line number Diff line
@@ -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;

drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c

+6 −0
Original line number Diff line number Diff line
@@ -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;

	}