From 53831aa12538f8753fb77b7ab6408cce54973b30 Mon Sep 17 00:00:00 2001 From: Shrikrishna Khare Date: Tue, 6 Jan 2015 09:20:15 -0800 Subject: [PATCH] Driver: Vmxnet3: Make Rx ring 2 size configurable Rx ring 2 size can be configured by adjusting rx-jumbo parameter of ethtool -G. Signed-off-by: Ramya Bolla Signed-off-by: Shreyas Bhatewara Signed-off-by: Shrikrishna Khare Signed-off-by: David S. Miller --- drivers/net/vmxnet3/vmxnet3_defs.h | 1 + drivers/net/vmxnet3/vmxnet3_drv.c | 6 +++++- drivers/net/vmxnet3/vmxnet3_ethtool.c | 27 ++++++++++++++++++++------- drivers/net/vmxnet3/vmxnet3_int.h | 6 ++++-- 4 files changed, 30 insertions(+), 10 deletions(-) diff --git a/drivers/net/vmxnet3/vmxnet3_defs.h b/drivers/net/vmxnet3/vmxnet3_defs.h index 4d84912..25b6fa4 100644 --- a/drivers/net/vmxnet3/vmxnet3_defs.h +++ b/drivers/net/vmxnet3/vmxnet3_defs.h @@ -342,6 +342,7 @@ union Vmxnet3_GenericDesc { #define VMXNET3_TX_RING_MAX_SIZE 4096 #define VMXNET3_TC_RING_MAX_SIZE 4096 #define VMXNET3_RX_RING_MAX_SIZE 4096 +#define VMXNET3_RX_RING2_MAX_SIZE 2048 #define VMXNET3_RC_RING_MAX_SIZE 8192 /* a list of reasons for queue stop */ diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c index afd2953..7af1f5c 100644 --- a/drivers/net/vmxnet3/vmxnet3_drv.c +++ b/drivers/net/vmxnet3/vmxnet3_drv.c @@ -2505,6 +2505,9 @@ vmxnet3_adjust_rx_ring_size(struct vmxnet3_adapter *adapter) ring0_size = min_t(u32, ring0_size, VMXNET3_RX_RING_MAX_SIZE / sz * sz); ring1_size = adapter->rx_queue[0].rx_ring[1].size; + ring1_size = (ring1_size + sz - 1) / sz * sz; + ring1_size = min_t(u32, ring1_size, VMXNET3_RX_RING2_MAX_SIZE / + sz * sz); comp_size = ring0_size + ring1_size; for (i = 0; i < adapter->num_rx_queues; i++) { @@ -2585,7 +2588,7 @@ vmxnet3_open(struct net_device *netdev) err = vmxnet3_create_queues(adapter, adapter->tx_ring_size, adapter->rx_ring_size, - VMXNET3_DEF_RX_RING_SIZE); + adapter->rx_ring2_size); if (err) goto queue_err; @@ -2964,6 +2967,7 @@ vmxnet3_probe_device(struct pci_dev *pdev, adapter->tx_ring_size = VMXNET3_DEF_TX_RING_SIZE; adapter->rx_ring_size = VMXNET3_DEF_RX_RING_SIZE; + adapter->rx_ring2_size = VMXNET3_DEF_RX_RING2_SIZE; spin_lock_init(&adapter->cmd_lock); adapter->adapter_pa = dma_map_single(&adapter->pdev->dev, adapter, diff --git a/drivers/net/vmxnet3/vmxnet3_ethtool.c b/drivers/net/vmxnet3/vmxnet3_ethtool.c index b7b5332..8a5a90e 100644 --- a/drivers/net/vmxnet3/vmxnet3_ethtool.c +++ b/drivers/net/vmxnet3/vmxnet3_ethtool.c @@ -447,12 +447,12 @@ vmxnet3_get_ringparam(struct net_device *netdev, param->rx_max_pending = VMXNET3_RX_RING_MAX_SIZE; param->tx_max_pending = VMXNET3_TX_RING_MAX_SIZE; param->rx_mini_max_pending = 0; - param->rx_jumbo_max_pending = 0; + param->rx_jumbo_max_pending = VMXNET3_RX_RING2_MAX_SIZE; param->rx_pending = adapter->rx_ring_size; param->tx_pending = adapter->tx_ring_size; param->rx_mini_pending = 0; - param->rx_jumbo_pending = 0; + param->rx_jumbo_pending = adapter->rx_ring2_size; } @@ -461,7 +461,7 @@ vmxnet3_set_ringparam(struct net_device *netdev, struct ethtool_ringparam *param) { struct vmxnet3_adapter *adapter = netdev_priv(netdev); - u32 new_tx_ring_size, new_rx_ring_size; + u32 new_tx_ring_size, new_rx_ring_size, new_rx_ring2_size; u32 sz; int err = 0; @@ -473,6 +473,10 @@ vmxnet3_set_ringparam(struct net_device *netdev, VMXNET3_RX_RING_MAX_SIZE) return -EINVAL; + if (param->rx_jumbo_pending == 0 || + param->rx_jumbo_pending > VMXNET3_RX_RING2_MAX_SIZE) + return -EINVAL; + /* if adapter not yet initialized, do nothing */ if (adapter->rx_buf_per_pkt == 0) { netdev_err(netdev, "adapter not completely initialized, " @@ -500,8 +504,15 @@ vmxnet3_set_ringparam(struct net_device *netdev, sz) != 0) return -EINVAL; - if (new_tx_ring_size == adapter->tx_queue[0].tx_ring.size && - new_rx_ring_size == adapter->rx_queue[0].rx_ring[0].size) { + /* ring2 has to be a multiple of VMXNET3_RING_SIZE_ALIGN */ + new_rx_ring2_size = (param->rx_jumbo_pending + VMXNET3_RING_SIZE_MASK) & + ~VMXNET3_RING_SIZE_MASK; + new_rx_ring2_size = min_t(u32, new_rx_ring2_size, + VMXNET3_RX_RING2_MAX_SIZE); + + if (new_tx_ring_size == adapter->tx_ring_size && + new_rx_ring_size == adapter->rx_ring_size && + new_rx_ring2_size == adapter->rx_ring2_size) { return 0; } @@ -522,7 +533,7 @@ vmxnet3_set_ringparam(struct net_device *netdev, vmxnet3_rq_destroy_all(adapter); err = vmxnet3_create_queues(adapter, new_tx_ring_size, - new_rx_ring_size, VMXNET3_DEF_RX_RING_SIZE); + new_rx_ring_size, new_rx_ring2_size); if (err) { /* failed, most likely because of OOM, try default @@ -530,11 +541,12 @@ vmxnet3_set_ringparam(struct net_device *netdev, netdev_err(netdev, "failed to apply new sizes, " "try the default ones\n"); new_rx_ring_size = VMXNET3_DEF_RX_RING_SIZE; + new_rx_ring2_size = VMXNET3_DEF_RX_RING2_SIZE; new_tx_ring_size = VMXNET3_DEF_TX_RING_SIZE; err = vmxnet3_create_queues(adapter, new_tx_ring_size, new_rx_ring_size, - VMXNET3_DEF_RX_RING_SIZE); + new_rx_ring2_size); if (err) { netdev_err(netdev, "failed to create queues " "with default sizes. Closing it\n"); @@ -549,6 +561,7 @@ vmxnet3_set_ringparam(struct net_device *netdev, } adapter->tx_ring_size = new_tx_ring_size; adapter->rx_ring_size = new_rx_ring_size; + adapter->rx_ring2_size = new_rx_ring2_size; out: clear_bit(VMXNET3_STATE_BIT_RESETTING, &adapter->state); diff --git a/drivers/net/vmxnet3/vmxnet3_int.h b/drivers/net/vmxnet3/vmxnet3_int.h index 5f0199f..048f020 100644 --- a/drivers/net/vmxnet3/vmxnet3_int.h +++ b/drivers/net/vmxnet3/vmxnet3_int.h @@ -69,10 +69,10 @@ /* * Version numbers */ -#define VMXNET3_DRIVER_VERSION_STRING "1.2.1.0-k" +#define VMXNET3_DRIVER_VERSION_STRING "1.3.1.0-k" /* a 32-bit int, each byte encode a verion number in VMXNET3_DRIVER_VERSION */ -#define VMXNET3_DRIVER_VERSION_NUM 0x01020100 +#define VMXNET3_DRIVER_VERSION_NUM 0x01030100 #if defined(CONFIG_PCI_MSI) /* RSS only makes sense if MSI-X is supported. */ @@ -352,6 +352,7 @@ struct vmxnet3_adapter { /* Ring sizes */ u32 tx_ring_size; u32 rx_ring_size; + u32 rx_ring2_size; struct work_struct work; @@ -384,6 +385,7 @@ struct vmxnet3_adapter { /* must be a multiple of VMXNET3_RING_SIZE_ALIGN */ #define VMXNET3_DEF_TX_RING_SIZE 512 #define VMXNET3_DEF_RX_RING_SIZE 256 +#define VMXNET3_DEF_RX_RING2_SIZE 128 #define VMXNET3_MAX_ETH_HDR_SIZE 22 #define VMXNET3_MAX_SKB_BUF_SIZE (3*1024) -- 2.7.4