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/*-
* Copyright (c) 2009-2012,2016 Microsoft Corp.
* Copyright (c) 2010-2012 Citrix Inc.
* Copyright (c) 2012 NetApp Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* HyperV vmbus (virtual machine bus) network VSC (virtual services client)
* header file
*
* (Updated from unencumbered NvspProtocol.h)
*/
#ifndef __HV_NET_VSC_H__
#define __HV_NET_VSC_H__
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/queue.h>
#include <sys/taskqueue.h>
#include <sys/sema.h>
#include <sys/sx.h>
#include <machine/bus.h>
#include <sys/bus.h>
#include <sys/bus_dma.h>
#include <netinet/in.h>
#include <netinet/tcp_lro.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_media.h>
#include <dev/hyperv/include/hyperv.h>
#include <dev/hyperv/include/hyperv_busdma.h>
#include <dev/hyperv/include/vmbus.h>
#include <dev/hyperv/netvsc/ndis.h>
#define HN_USE_TXDESC_BUFRING
MALLOC_DECLARE(M_NETVSC);
/*
* The following arguably belongs in a separate header file
*/
/*
* Defines
*/
#define NETVSC_SEND_BUFFER_SIZE (1024*1024*15) /* 15M */
#define NETVSC_RECEIVE_BUFFER_SIZE_LEGACY (1024*1024*15) /* 15MB */
#define NETVSC_RECEIVE_BUFFER_SIZE (1024*1024*16) /* 16MB */
/*
* Maximum MTU we permit to be configured for a netvsc interface.
* When the code was developed, a max MTU of 12232 was tested and
* proven to work. 9K is a reasonable maximum for an Ethernet.
*/
#define NETVSC_MAX_CONFIGURABLE_MTU (9 * 1024)
#define NETVSC_PACKET_SIZE PAGE_SIZE
/*
* Data types
*/
struct vmbus_channel;
#define NETVSC_DEVICE_RING_BUFFER_SIZE (128 * PAGE_SIZE)
#define NETVSC_PACKET_MAXPAGE 32
#define HN_XACT_REQ_PGCNT 2
#define HN_XACT_RESP_PGCNT 2
#define HN_XACT_REQ_SIZE (HN_XACT_REQ_PGCNT * PAGE_SIZE)
#define HN_XACT_RESP_SIZE (HN_XACT_RESP_PGCNT * PAGE_SIZE)
#ifndef HN_USE_TXDESC_BUFRING
struct hn_txdesc;
SLIST_HEAD(hn_txdesc_list, hn_txdesc);
#else
struct buf_ring;
#endif
struct hn_tx_ring;
struct hn_rx_ring {
struct ifnet *hn_ifp;
struct hn_tx_ring *hn_txr;
void *hn_rdbuf;
uint8_t *hn_rxbuf; /* shadow sc->hn_rxbuf */
int hn_rx_idx;
/* Trust csum verification on host side */
int hn_trust_hcsum; /* HN_TRUST_HCSUM_ */
struct lro_ctrl hn_lro;
u_long hn_csum_ip;
u_long hn_csum_tcp;
u_long hn_csum_udp;
u_long hn_csum_trusted;
u_long hn_lro_tried;
u_long hn_small_pkts;
u_long hn_pkts;
u_long hn_rss_pkts;
/* Rarely used stuffs */
struct sysctl_oid *hn_rx_sysctl_tree;
int hn_rx_flags;
} __aligned(CACHE_LINE_SIZE);
#define HN_TRUST_HCSUM_IP 0x0001
#define HN_TRUST_HCSUM_TCP 0x0002
#define HN_TRUST_HCSUM_UDP 0x0004
#define HN_RX_FLAG_ATTACHED 0x1
struct hn_tx_ring {
#ifndef HN_USE_TXDESC_BUFRING
struct mtx hn_txlist_spin;
struct hn_txdesc_list hn_txlist;
#else
struct buf_ring *hn_txdesc_br;
#endif
int hn_txdesc_cnt;
int hn_txdesc_avail;
u_short hn_has_txeof;
u_short hn_txdone_cnt;
int hn_sched_tx;
void (*hn_txeof)(struct hn_tx_ring *);
struct taskqueue *hn_tx_taskq;
struct task hn_tx_task;
struct task hn_txeof_task;
struct buf_ring *hn_mbuf_br;
int hn_oactive;
int hn_tx_idx;
struct mtx hn_tx_lock;
struct hn_softc *hn_sc;
struct vmbus_channel *hn_chan;
int hn_direct_tx_size;
int hn_chim_size;
bus_dma_tag_t hn_tx_data_dtag;
uint64_t hn_csum_assist;
int hn_gpa_cnt;
struct vmbus_gpa hn_gpa[NETVSC_PACKET_MAXPAGE];
u_long hn_no_txdescs;
u_long hn_send_failed;
u_long hn_txdma_failed;
u_long hn_tx_collapsed;
u_long hn_tx_chimney_tried;
u_long hn_tx_chimney;
u_long hn_pkts;
/* Rarely used stuffs */
struct hn_txdesc *hn_txdesc;
bus_dma_tag_t hn_tx_rndis_dtag;
struct sysctl_oid *hn_tx_sysctl_tree;
int hn_tx_flags;
} __aligned(CACHE_LINE_SIZE);
#define HN_TX_FLAG_ATTACHED 0x1
/*
* Device-specific softc structure
*/
typedef struct hn_softc {
struct ifnet *hn_ifp;
struct ifmedia hn_media;
device_t hn_dev;
uint8_t hn_unit;
int hn_carrier;
int hn_if_flags;
struct mtx hn_lock;
int hn_initdone;
/* See hv_netvsc_drv_freebsd.c for rules on how to use */
int temp_unusable;
struct vmbus_channel *hn_prichan;
int hn_rx_ring_cnt;
int hn_rx_ring_inuse;
struct hn_rx_ring *hn_rx_ring;
int hn_tx_ring_cnt;
int hn_tx_ring_inuse;
struct hn_tx_ring *hn_tx_ring;
uint8_t *hn_chim;
u_long *hn_chim_bmap;
int hn_chim_bmap_cnt;
int hn_chim_cnt;
int hn_chim_szmax;
int hn_cpu;
struct taskqueue *hn_tx_taskq;
struct sysctl_oid *hn_tx_sysctl_tree;
struct sysctl_oid *hn_rx_sysctl_tree;
struct vmbus_xact_ctx *hn_xact;
uint32_t hn_nvs_ver;
uint32_t hn_flags;
void *hn_rxbuf;
uint32_t hn_rxbuf_gpadl;
struct hyperv_dma hn_rxbuf_dma;
uint32_t hn_chim_gpadl;
struct hyperv_dma hn_chim_dma;
uint32_t hn_rndis_rid;
uint32_t hn_ndis_ver;
struct ndis_rssprm_toeplitz hn_rss;
} hn_softc_t;
#define HN_FLAG_RXBUF_CONNECTED 0x0001
#define HN_FLAG_CHIM_CONNECTED 0x0002
/*
* Externs
*/
extern int hv_promisc_mode;
struct hn_send_ctx;
void netvsc_linkstatus_callback(struct hn_softc *sc, uint32_t status);
int hn_nvs_attach(struct hn_softc *sc, int mtu);
int hv_nv_on_device_remove(struct hn_softc *sc);
int hv_nv_on_send(struct vmbus_channel *chan, uint32_t rndis_mtype,
struct hn_send_ctx *sndc, struct vmbus_gpa *gpa, int gpa_cnt);
#endif /* __HV_NET_VSC_H__ */
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