430 lines
12 KiB
C
430 lines
12 KiB
C
/*
|
|
* Linux driver for VMware's vmxnet3 ethernet NIC.
|
|
*
|
|
* Copyright (C) 2008-2009, VMware, Inc. All Rights Reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; version 2 of the License and no later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
|
|
* NON INFRINGEMENT. See the GNU General Public License for more
|
|
* details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* The full GNU General Public License is included in this distribution in
|
|
* the file called "COPYING".
|
|
*
|
|
* Maintained by: Shreyas Bhatewara <pv-drivers@vmware.com>
|
|
*
|
|
*/
|
|
|
|
#ifndef _VMXNET3_INT_H
|
|
#define _VMXNET3_INT_H
|
|
|
|
#include <linux/bitops.h>
|
|
#include <linux/ethtool.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/compiler.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/highmem.h>
|
|
#include <linux/timer.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/workqueue.h>
|
|
#include <linux/uaccess.h>
|
|
#include <asm/dma.h>
|
|
#include <asm/page.h>
|
|
|
|
#include <linux/tcp.h>
|
|
#include <linux/udp.h>
|
|
#include <linux/ip.h>
|
|
#include <linux/ipv6.h>
|
|
#include <linux/in.h>
|
|
#include <linux/etherdevice.h>
|
|
#include <asm/checksum.h>
|
|
#include <linux/if_vlan.h>
|
|
#include <linux/if_arp.h>
|
|
#include <linux/inetdevice.h>
|
|
#include <linux/log2.h>
|
|
|
|
#include "vmxnet3_defs.h"
|
|
|
|
#ifdef DEBUG
|
|
# define VMXNET3_DRIVER_VERSION_REPORT VMXNET3_DRIVER_VERSION_STRING"-NAPI(debug)"
|
|
#else
|
|
# define VMXNET3_DRIVER_VERSION_REPORT VMXNET3_DRIVER_VERSION_STRING"-NAPI"
|
|
#endif
|
|
|
|
|
|
/*
|
|
* Version numbers
|
|
*/
|
|
#define VMXNET3_DRIVER_VERSION_STRING "1.4.4.0-k"
|
|
|
|
/* a 32-bit int, each byte encode a verion number in VMXNET3_DRIVER_VERSION */
|
|
#define VMXNET3_DRIVER_VERSION_NUM 0x01040400
|
|
|
|
#if defined(CONFIG_PCI_MSI)
|
|
/* RSS only makes sense if MSI-X is supported. */
|
|
#define VMXNET3_RSS
|
|
#endif
|
|
|
|
/*
|
|
* Capabilities
|
|
*/
|
|
|
|
enum {
|
|
VMNET_CAP_SG = 0x0001, /* Can do scatter-gather transmits. */
|
|
VMNET_CAP_IP4_CSUM = 0x0002, /* Can checksum only TCP/UDP over
|
|
* IPv4 */
|
|
VMNET_CAP_HW_CSUM = 0x0004, /* Can checksum all packets. */
|
|
VMNET_CAP_HIGH_DMA = 0x0008, /* Can DMA to high memory. */
|
|
VMNET_CAP_TOE = 0x0010, /* Supports TCP/IP offload. */
|
|
VMNET_CAP_TSO = 0x0020, /* Supports TCP Segmentation
|
|
* offload */
|
|
VMNET_CAP_SW_TSO = 0x0040, /* Supports SW TCP Segmentation */
|
|
VMNET_CAP_VMXNET_APROM = 0x0080, /* Vmxnet APROM support */
|
|
VMNET_CAP_HW_TX_VLAN = 0x0100, /* Can we do VLAN tagging in HW */
|
|
VMNET_CAP_HW_RX_VLAN = 0x0200, /* Can we do VLAN untagging in HW */
|
|
VMNET_CAP_SW_VLAN = 0x0400, /* VLAN tagging/untagging in SW */
|
|
VMNET_CAP_WAKE_PCKT_RCV = 0x0800, /* Can wake on network packet recv? */
|
|
VMNET_CAP_ENABLE_INT_INLINE = 0x1000, /* Enable Interrupt Inline */
|
|
VMNET_CAP_ENABLE_HEADER_COPY = 0x2000, /* copy header for vmkernel */
|
|
VMNET_CAP_TX_CHAIN = 0x4000, /* Guest can use multiple tx entries
|
|
* for a pkt */
|
|
VMNET_CAP_RX_CHAIN = 0x8000, /* pkt can span multiple rx entries */
|
|
VMNET_CAP_LPD = 0x10000, /* large pkt delivery */
|
|
VMNET_CAP_BPF = 0x20000, /* BPF Support in VMXNET Virtual HW*/
|
|
VMNET_CAP_SG_SPAN_PAGES = 0x40000, /* Scatter-gather can span multiple*/
|
|
/* pages transmits */
|
|
VMNET_CAP_IP6_CSUM = 0x80000, /* Can do IPv6 csum offload. */
|
|
VMNET_CAP_TSO6 = 0x100000, /* TSO seg. offload for IPv6 pkts. */
|
|
VMNET_CAP_TSO256k = 0x200000, /* Can do TSO seg offload for */
|
|
/* pkts up to 256kB. */
|
|
VMNET_CAP_UPT = 0x400000 /* Support UPT */
|
|
};
|
|
|
|
/*
|
|
* PCI vendor and device IDs.
|
|
*/
|
|
#define PCI_DEVICE_ID_VMWARE_VMXNET3 0x07B0
|
|
#define MAX_ETHERNET_CARDS 10
|
|
#define MAX_PCI_PASSTHRU_DEVICE 6
|
|
|
|
struct vmxnet3_cmd_ring {
|
|
union Vmxnet3_GenericDesc *base;
|
|
u32 size;
|
|
u32 next2fill;
|
|
u32 next2comp;
|
|
u8 gen;
|
|
dma_addr_t basePA;
|
|
};
|
|
|
|
static inline void
|
|
vmxnet3_cmd_ring_adv_next2fill(struct vmxnet3_cmd_ring *ring)
|
|
{
|
|
ring->next2fill++;
|
|
if (unlikely(ring->next2fill == ring->size)) {
|
|
ring->next2fill = 0;
|
|
VMXNET3_FLIP_RING_GEN(ring->gen);
|
|
}
|
|
}
|
|
|
|
static inline void
|
|
vmxnet3_cmd_ring_adv_next2comp(struct vmxnet3_cmd_ring *ring)
|
|
{
|
|
VMXNET3_INC_RING_IDX_ONLY(ring->next2comp, ring->size);
|
|
}
|
|
|
|
static inline int
|
|
vmxnet3_cmd_ring_desc_avail(struct vmxnet3_cmd_ring *ring)
|
|
{
|
|
return (ring->next2comp > ring->next2fill ? 0 : ring->size) +
|
|
ring->next2comp - ring->next2fill - 1;
|
|
}
|
|
|
|
struct vmxnet3_comp_ring {
|
|
union Vmxnet3_GenericDesc *base;
|
|
u32 size;
|
|
u32 next2proc;
|
|
u8 gen;
|
|
u8 intr_idx;
|
|
dma_addr_t basePA;
|
|
};
|
|
|
|
static inline void
|
|
vmxnet3_comp_ring_adv_next2proc(struct vmxnet3_comp_ring *ring)
|
|
{
|
|
ring->next2proc++;
|
|
if (unlikely(ring->next2proc == ring->size)) {
|
|
ring->next2proc = 0;
|
|
VMXNET3_FLIP_RING_GEN(ring->gen);
|
|
}
|
|
}
|
|
|
|
struct vmxnet3_tx_data_ring {
|
|
struct Vmxnet3_TxDataDesc *base;
|
|
u32 size;
|
|
dma_addr_t basePA;
|
|
};
|
|
|
|
enum vmxnet3_buf_map_type {
|
|
VMXNET3_MAP_INVALID = 0,
|
|
VMXNET3_MAP_NONE,
|
|
VMXNET3_MAP_SINGLE,
|
|
VMXNET3_MAP_PAGE,
|
|
};
|
|
|
|
struct vmxnet3_tx_buf_info {
|
|
u32 map_type;
|
|
u16 len;
|
|
u16 sop_idx;
|
|
dma_addr_t dma_addr;
|
|
struct sk_buff *skb;
|
|
};
|
|
|
|
struct vmxnet3_tq_driver_stats {
|
|
u64 drop_total; /* # of pkts dropped by the driver, the
|
|
* counters below track droppings due to
|
|
* different reasons
|
|
*/
|
|
u64 drop_too_many_frags;
|
|
u64 drop_oversized_hdr;
|
|
u64 drop_hdr_inspect_err;
|
|
u64 drop_tso;
|
|
|
|
u64 tx_ring_full;
|
|
u64 linearized; /* # of pkts linearized */
|
|
u64 copy_skb_header; /* # of times we have to copy skb header */
|
|
u64 oversized_hdr;
|
|
};
|
|
|
|
struct vmxnet3_tx_ctx {
|
|
bool ipv4;
|
|
bool ipv6;
|
|
u16 mss;
|
|
u32 eth_ip_hdr_size; /* only valid for pkts requesting tso or csum
|
|
* offloading
|
|
*/
|
|
u32 l4_hdr_size; /* only valid if mss != 0 */
|
|
u32 copy_size; /* # of bytes copied into the data ring */
|
|
union Vmxnet3_GenericDesc *sop_txd;
|
|
union Vmxnet3_GenericDesc *eop_txd;
|
|
};
|
|
|
|
struct vmxnet3_tx_queue {
|
|
char name[IFNAMSIZ+8]; /* To identify interrupt */
|
|
struct vmxnet3_adapter *adapter;
|
|
spinlock_t tx_lock;
|
|
struct vmxnet3_cmd_ring tx_ring;
|
|
struct vmxnet3_tx_buf_info *buf_info;
|
|
dma_addr_t buf_info_pa;
|
|
struct vmxnet3_tx_data_ring data_ring;
|
|
struct vmxnet3_comp_ring comp_ring;
|
|
struct Vmxnet3_TxQueueCtrl *shared;
|
|
struct vmxnet3_tq_driver_stats stats;
|
|
bool stopped;
|
|
int num_stop; /* # of times the queue is
|
|
* stopped */
|
|
int qid;
|
|
} __attribute__((__aligned__(SMP_CACHE_BYTES)));
|
|
|
|
enum vmxnet3_rx_buf_type {
|
|
VMXNET3_RX_BUF_NONE = 0,
|
|
VMXNET3_RX_BUF_SKB = 1,
|
|
VMXNET3_RX_BUF_PAGE = 2
|
|
};
|
|
|
|
struct vmxnet3_rx_buf_info {
|
|
enum vmxnet3_rx_buf_type buf_type;
|
|
u16 len;
|
|
union {
|
|
struct sk_buff *skb;
|
|
struct page *page;
|
|
};
|
|
dma_addr_t dma_addr;
|
|
};
|
|
|
|
struct vmxnet3_rx_ctx {
|
|
struct sk_buff *skb;
|
|
u32 sop_idx;
|
|
};
|
|
|
|
struct vmxnet3_rq_driver_stats {
|
|
u64 drop_total;
|
|
u64 drop_err;
|
|
u64 drop_fcs;
|
|
u64 rx_buf_alloc_failure;
|
|
};
|
|
|
|
struct vmxnet3_rx_queue {
|
|
char name[IFNAMSIZ + 8]; /* To identify interrupt */
|
|
struct vmxnet3_adapter *adapter;
|
|
struct napi_struct napi;
|
|
struct vmxnet3_cmd_ring rx_ring[2];
|
|
struct vmxnet3_comp_ring comp_ring;
|
|
struct vmxnet3_rx_ctx rx_ctx;
|
|
u32 qid; /* rqID in RCD for buffer from 1st ring */
|
|
u32 qid2; /* rqID in RCD for buffer from 2nd ring */
|
|
struct vmxnet3_rx_buf_info *buf_info[2];
|
|
dma_addr_t buf_info_pa;
|
|
struct Vmxnet3_RxQueueCtrl *shared;
|
|
struct vmxnet3_rq_driver_stats stats;
|
|
} __attribute__((__aligned__(SMP_CACHE_BYTES)));
|
|
|
|
#define VMXNET3_DEVICE_MAX_TX_QUEUES 8
|
|
#define VMXNET3_DEVICE_MAX_RX_QUEUES 8 /* Keep this value as a power of 2 */
|
|
|
|
/* Should be less than UPT1_RSS_MAX_IND_TABLE_SIZE */
|
|
#define VMXNET3_RSS_IND_TABLE_SIZE (VMXNET3_DEVICE_MAX_RX_QUEUES * 4)
|
|
|
|
#define VMXNET3_LINUX_MAX_MSIX_VECT (VMXNET3_DEVICE_MAX_TX_QUEUES + \
|
|
VMXNET3_DEVICE_MAX_RX_QUEUES + 1)
|
|
#define VMXNET3_LINUX_MIN_MSIX_VECT 2 /* 1 for tx-rx pair and 1 for event */
|
|
|
|
|
|
struct vmxnet3_intr {
|
|
enum vmxnet3_intr_mask_mode mask_mode;
|
|
enum vmxnet3_intr_type type; /* MSI-X, MSI, or INTx? */
|
|
u8 num_intrs; /* # of intr vectors */
|
|
u8 event_intr_idx; /* idx of the intr vector for event */
|
|
u8 mod_levels[VMXNET3_LINUX_MAX_MSIX_VECT]; /* moderation level */
|
|
char event_msi_vector_name[IFNAMSIZ+11];
|
|
#ifdef CONFIG_PCI_MSI
|
|
struct msix_entry msix_entries[VMXNET3_LINUX_MAX_MSIX_VECT];
|
|
#endif
|
|
};
|
|
|
|
/* Interrupt sharing schemes, share_intr */
|
|
#define VMXNET3_INTR_BUDDYSHARE 0 /* Corresponding tx,rx queues share irq */
|
|
#define VMXNET3_INTR_TXSHARE 1 /* All tx queues share one irq */
|
|
#define VMXNET3_INTR_DONTSHARE 2 /* each queue has its own irq */
|
|
|
|
|
|
#define VMXNET3_STATE_BIT_RESETTING 0
|
|
#define VMXNET3_STATE_BIT_QUIESCED 1
|
|
struct vmxnet3_adapter {
|
|
struct vmxnet3_tx_queue tx_queue[VMXNET3_DEVICE_MAX_TX_QUEUES];
|
|
struct vmxnet3_rx_queue rx_queue[VMXNET3_DEVICE_MAX_RX_QUEUES];
|
|
unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
|
|
struct vmxnet3_intr intr;
|
|
spinlock_t cmd_lock;
|
|
struct Vmxnet3_DriverShared *shared;
|
|
struct Vmxnet3_PMConf *pm_conf;
|
|
struct Vmxnet3_TxQueueDesc *tqd_start; /* all tx queue desc */
|
|
struct Vmxnet3_RxQueueDesc *rqd_start; /* all rx queue desc */
|
|
struct net_device *netdev;
|
|
struct pci_dev *pdev;
|
|
|
|
u8 __iomem *hw_addr0; /* for BAR 0 */
|
|
u8 __iomem *hw_addr1; /* for BAR 1 */
|
|
u8 version;
|
|
|
|
bool rxcsum;
|
|
bool lro;
|
|
|
|
#ifdef VMXNET3_RSS
|
|
struct UPT1_RSSConf *rss_conf;
|
|
bool rss;
|
|
#endif
|
|
u32 num_rx_queues;
|
|
u32 num_tx_queues;
|
|
|
|
/* rx buffer related */
|
|
unsigned skb_buf_size;
|
|
int rx_buf_per_pkt; /* only apply to the 1st ring */
|
|
dma_addr_t shared_pa;
|
|
dma_addr_t queue_desc_pa;
|
|
|
|
/* Wake-on-LAN */
|
|
u32 wol;
|
|
|
|
/* Link speed */
|
|
u32 link_speed; /* in mbps */
|
|
|
|
u64 tx_timeout_count;
|
|
|
|
/* Ring sizes */
|
|
u32 tx_ring_size;
|
|
u32 rx_ring_size;
|
|
u32 rx_ring2_size;
|
|
|
|
struct work_struct work;
|
|
|
|
unsigned long state; /* VMXNET3_STATE_BIT_xxx */
|
|
|
|
int share_intr;
|
|
|
|
dma_addr_t adapter_pa;
|
|
dma_addr_t pm_conf_pa;
|
|
dma_addr_t rss_conf_pa;
|
|
};
|
|
|
|
#define VMXNET3_WRITE_BAR0_REG(adapter, reg, val) \
|
|
writel((val), (adapter)->hw_addr0 + (reg))
|
|
#define VMXNET3_READ_BAR0_REG(adapter, reg) \
|
|
readl((adapter)->hw_addr0 + (reg))
|
|
|
|
#define VMXNET3_WRITE_BAR1_REG(adapter, reg, val) \
|
|
writel((val), (adapter)->hw_addr1 + (reg))
|
|
#define VMXNET3_READ_BAR1_REG(adapter, reg) \
|
|
readl((adapter)->hw_addr1 + (reg))
|
|
|
|
#define VMXNET3_WAKE_QUEUE_THRESHOLD(tq) (5)
|
|
#define VMXNET3_RX_ALLOC_THRESHOLD(rq, ring_idx, adapter) \
|
|
((rq)->rx_ring[ring_idx].size >> 3)
|
|
|
|
#define VMXNET3_GET_ADDR_LO(dma) ((u32)(dma))
|
|
#define VMXNET3_GET_ADDR_HI(dma) ((u32)(((u64)(dma)) >> 32))
|
|
|
|
/* 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)
|
|
|
|
int
|
|
vmxnet3_quiesce_dev(struct vmxnet3_adapter *adapter);
|
|
|
|
int
|
|
vmxnet3_activate_dev(struct vmxnet3_adapter *adapter);
|
|
|
|
void
|
|
vmxnet3_force_close(struct vmxnet3_adapter *adapter);
|
|
|
|
void
|
|
vmxnet3_reset_dev(struct vmxnet3_adapter *adapter);
|
|
|
|
void
|
|
vmxnet3_tq_destroy_all(struct vmxnet3_adapter *adapter);
|
|
|
|
void
|
|
vmxnet3_rq_destroy_all(struct vmxnet3_adapter *adapter);
|
|
|
|
int
|
|
vmxnet3_set_features(struct net_device *netdev, netdev_features_t features);
|
|
|
|
int
|
|
vmxnet3_create_queues(struct vmxnet3_adapter *adapter,
|
|
u32 tx_ring_size, u32 rx_ring_size, u32 rx_ring2_size);
|
|
|
|
void vmxnet3_set_ethtool_ops(struct net_device *netdev);
|
|
|
|
struct rtnl_link_stats64 *
|
|
vmxnet3_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats);
|
|
|
|
extern char vmxnet3_driver_name[];
|
|
#endif
|