From 3b5dca262f52793fdff4d0d970e8f1cec3f7f2ef Mon Sep 17 00:00:00 2001 From: Jacob Keller Date: Sat, 21 Sep 2013 06:24:25 +0000 Subject: [PATCH] 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 Tested-by: Phil Schmitt Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ixgbevf/ethtool.c | 32 +++++++++++++++++++++++ drivers/net/ethernet/intel/ixgbevf/ixgbevf.h | 22 ++++++++++++++++ drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 6 +++++ 3 files changed, 60 insertions(+) diff --git a/drivers/net/ethernet/intel/ixgbevf/ethtool.c b/drivers/net/ethernet/intel/ixgbevf/ethtool.c index 21adb1b..44f7c42 100644 --- a/drivers/net/ethernet/intel/ixgbevf/ethtool.c +++ b/drivers/net/ethernet/intel/ixgbevf/ethtool.c @@ -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++) { diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h index 85c7560..78e4c51 100644 --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h @@ -40,6 +40,7 @@ #ifdef CONFIG_NET_RX_BUSY_POLL #include +#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; diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c index bc03a2e..b16b694 100644 --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c @@ -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; } -- 2.7.4