From 0a797db323a6f74da3f43d5460792989da6617f4 Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Fri, 26 Jan 2018 08:54:45 -0800 Subject: [PATCH] i40e/i40evf: Update DESC_NEEDED value to reflect larger value When compared to ixgbe and other previous Intel drivers the i40e and i40evf drivers actually reserve 2 additional descriptors in maybe_stop_tx for cache line alignment. We need to update DESC_NEEDED to reflect this as otherwise we are more likely to return TX_BUSY which will cause issues with things like xmit_more. Signed-off-by: Alexander Duyck Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/ethernet/intel/i40e/i40e_txrx.h | 2 +- drivers/net/ethernet/intel/i40evf/i40e_txrx.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.h b/drivers/net/ethernet/intel/i40e/i40e_txrx.h index d4799b41e98a..701b708628b0 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.h +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.h @@ -279,7 +279,7 @@ static inline unsigned int i40e_txd_use_count(unsigned int size) } /* Tx Descriptors needed, worst case */ -#define DESC_NEEDED (MAX_SKB_FRAGS + 4) +#define DESC_NEEDED (MAX_SKB_FRAGS + 6) #define I40E_MIN_DESC_PENDING 4 #define I40E_TX_FLAGS_HW_VLAN BIT(1) diff --git a/drivers/net/ethernet/intel/i40evf/i40e_txrx.h b/drivers/net/ethernet/intel/i40evf/i40e_txrx.h index e72f16b4555b..7798a6645c3f 100644 --- a/drivers/net/ethernet/intel/i40evf/i40e_txrx.h +++ b/drivers/net/ethernet/intel/i40evf/i40e_txrx.h @@ -260,7 +260,7 @@ static inline unsigned int i40e_txd_use_count(unsigned int size) } /* Tx Descriptors needed, worst case */ -#define DESC_NEEDED (MAX_SKB_FRAGS + 4) +#define DESC_NEEDED (MAX_SKB_FRAGS + 6) #define I40E_MIN_DESC_PENDING 4 #define I40E_TX_FLAGS_HW_VLAN BIT(1) -- 2.39.5