Message ID | 1440690163-128213-2-git-send-email-catherine.sullivan@intel.com |
---|---|
State | Accepted |
Delegated to: | Jeff Kirsher |
Headers | show |
> -----Original Message----- > From: Intel-wired-lan [mailto:intel-wired-lan-bounces@lists.osuosl.org] On > Behalf Of Catherine Sullivan > Sent: Thursday, August 27, 2015 8:42 AM > To: intel-wired-lan@lists.osuosl.org > Subject: [Intel-wired-lan] [next PATCH S12 01/15] i40e/i40evf: Add a stat to > keep track of linearization count > > From: Anjali Singhai Jain <anjali.singhai@intel.com> > > Keep track of how many times we ask the stack to linearize the skb because > the HW cannot handle skbs with more than 8 frags per segment/single > packet. > > Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com> > Change-ID: If455452060963a769bbe6112cba952e79e944b52 > --- > drivers/net/ethernet/intel/i40e/i40e.h | 1 + > drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 1 + > drivers/net/ethernet/intel/i40e/i40e_main.c | 5 ++++- > drivers/net/ethernet/intel/i40e/i40e_txrx.c | 5 +++-- > drivers/net/ethernet/intel/i40e/i40e_txrx.h | 1 + > drivers/net/ethernet/intel/i40evf/i40e_txrx.c | 5 +++-- > drivers/net/ethernet/intel/i40evf/i40e_txrx.h | 1 + > 7 files changed, 14 insertions(+), 5 deletions(-) Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Code changes present in tree
diff --git a/drivers/net/ethernet/intel/i40e/i40e.h b/drivers/net/ethernet/intel/i40e/i40e.h index 3d4f2e4..73d2e86 100644 --- a/drivers/net/ethernet/intel/i40e/i40e.h +++ b/drivers/net/ethernet/intel/i40e/i40e.h @@ -477,6 +477,7 @@ struct i40e_vsi { #endif u32 tx_restart; u32 tx_busy; + u64 tx_linearize; u32 rx_buf_failed; u32 rx_page_failed; diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c index 1fa38f6..ffa9431 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c +++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c @@ -87,6 +87,7 @@ static const struct i40e_stats i40e_gstrings_misc_stats[] = { I40E_VSI_STAT("rx_broadcast", eth_stats.rx_broadcast), I40E_VSI_STAT("tx_broadcast", eth_stats.tx_broadcast), I40E_VSI_STAT("rx_unknown_protocol", eth_stats.rx_unknown_protocol), + I40E_VSI_STAT("tx_linearize", tx_linearize), }; static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi, diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index d6ba5f6..b3328ca 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -796,6 +796,7 @@ static void i40e_update_vsi_stats(struct i40e_vsi *vsi) u32 rx_page, rx_buf; u64 bytes, packets; unsigned int start; + u64 tx_linearize; u64 rx_p, rx_b; u64 tx_p, tx_b; u16 q; @@ -814,7 +815,7 @@ static void i40e_update_vsi_stats(struct i40e_vsi *vsi) */ rx_b = rx_p = 0; tx_b = tx_p = 0; - tx_restart = tx_busy = 0; + tx_restart = tx_busy = tx_linearize = 0; rx_page = 0; rx_buf = 0; rcu_read_lock(); @@ -831,6 +832,7 @@ static void i40e_update_vsi_stats(struct i40e_vsi *vsi) tx_p += packets; tx_restart += p->tx_stats.restart_queue; tx_busy += p->tx_stats.tx_busy; + tx_linearize += p->tx_stats.tx_linearize; /* Rx queue is part of the same block as Tx queue */ p = &p[1]; @@ -847,6 +849,7 @@ static void i40e_update_vsi_stats(struct i40e_vsi *vsi) rcu_read_unlock(); vsi->tx_restart = tx_restart; vsi->tx_busy = tx_busy; + vsi->tx_linearize = tx_linearize; vsi->rx_page_failed = rx_page; vsi->rx_buf_failed = rx_buf; diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c index b93c2dc..79c8f71 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c @@ -2809,10 +2809,11 @@ static netdev_tx_t i40e_xmit_frame_ring(struct sk_buff *skb, if (tsyn) tx_flags |= I40E_TX_FLAGS_TSYN; - if (i40e_chk_linearize(skb, tx_flags)) + if (i40e_chk_linearize(skb, tx_flags)) { if (skb_linearize(skb)) goto out_drop; - + tx_ring->tx_stats.tx_linearize++; + } skb_tx_timestamp(skb); /* always enable CRC insertion offload */ diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.h b/drivers/net/ethernet/intel/i40e/i40e_txrx.h index db2130f..c6d2995 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.h +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.h @@ -188,6 +188,7 @@ struct i40e_tx_queue_stats { u64 restart_queue; u64 tx_busy; u64 tx_done_old; + u64 tx_linearize; }; struct i40e_rx_queue_stats { diff --git a/drivers/net/ethernet/intel/i40evf/i40e_txrx.c b/drivers/net/ethernet/intel/i40evf/i40e_txrx.c index 37e2b05..1d0e38f 100644 --- a/drivers/net/ethernet/intel/i40evf/i40e_txrx.c +++ b/drivers/net/ethernet/intel/i40evf/i40e_txrx.c @@ -2005,10 +2005,11 @@ static netdev_tx_t i40e_xmit_frame_ring(struct sk_buff *skb, else if (tso) tx_flags |= I40E_TX_FLAGS_TSO; - if (i40e_chk_linearize(skb, tx_flags)) + if (i40e_chk_linearize(skb, tx_flags)) { if (skb_linearize(skb)) goto out_drop; - + tx_ring->tx_stats.tx_linearize++; + } skb_tx_timestamp(skb); /* always enable CRC insertion offload */ diff --git a/drivers/net/ethernet/intel/i40evf/i40e_txrx.h b/drivers/net/ethernet/intel/i40evf/i40e_txrx.h index 9a30f5d..e8dd651 100644 --- a/drivers/net/ethernet/intel/i40evf/i40e_txrx.h +++ b/drivers/net/ethernet/intel/i40evf/i40e_txrx.h @@ -187,6 +187,7 @@ struct i40e_tx_queue_stats { u64 restart_queue; u64 tx_busy; u64 tx_done_old; + u64 tx_linearize; }; struct i40e_rx_queue_stats {