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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Copyright (c) 2014, 2017 by Delphix. All rights reserved.
*/
#ifndef _SYS_XNF_H
#define _SYS_XNF_H
#ifdef __cplusplus
extern "C" {
#endif
/*
* As of April 2017, TX and RX ring sizes are fixed to 1 page in
* size and Xen doesn't support changing it.
* This represents 256 entries.
*/
#define NET_TX_RING_SIZE __CONST_RING_SIZE(netif_tx, PAGESIZE)
#define NET_RX_RING_SIZE __CONST_RING_SIZE(netif_rx, PAGESIZE)
/*
* There is no MTU limit, however for all practical purposes hardware won't
* support anything much larger than 9k. We put an arbitrary 16k limit.
*/
#define XNF_MAXPKT 16384
#define XNF_FRAMESIZE 1514 /* frame size including MAC header */
/*
* Based on XEN_NETIF_NR_SLOTS_MIN in Linux. Packets that span more pages
* than this must be defragmented or dropped.
*/
#define XEN_MAX_TX_DATA_PAGES 18
/*
* We keep one extra slot for LSO
*/
#define XEN_MAX_SLOTS_PER_TX (XEN_MAX_TX_DATA_PAGES + 1)
#define XEN_DATA_BOUNDARY 0x1000
/*
* Information about each receive buffer and any transmit look-aside
* buffers.
*/
typedef struct xnf_buf {
frtn_t free_rtn;
struct xnf *xnfp;
ddi_dma_handle_t dma_handle;
caddr_t buf; /* DMA-able data buffer */
paddr_t buf_phys;
mfn_t buf_mfn;
size_t len;
struct xnf_buf *next; /* For linking into free list */
ddi_acc_handle_t acc_handle;
grant_ref_t grant_ref; /* grant table reference */
uint16_t id; /* buffer id */
unsigned int gen;
} xnf_buf_t;
/*
* Information about each transmit buffer.
*/
typedef enum xnf_txbuf_type {
TX_DATA = 1,
TX_MCAST_REQ,
TX_MCAST_RSP
} xnf_txbuf_type_t;
/*
* A xnf_txbuf is used to store ancillary data for a netif_tx_request_t.
* A tx packet can span multiple xnf_txbuf's, linked together through tx_next
* and tx_prev; tx_head points to the head of the chain.
*/
typedef struct xnf_txbuf {
struct xnf_txbuf *tx_next;
struct xnf_txbuf *tx_prev;
struct xnf_txbuf *tx_head;
xnf_txbuf_type_t tx_type;
netif_tx_request_t tx_txreq;
netif_extra_info_t tx_extra;
/* Used for TX_DATA types */
ddi_dma_handle_t tx_dma_handle;
boolean_t tx_handle_bound;
mblk_t *tx_mp;
xnf_buf_t *tx_bdesc; /* Look-aside buffer, if used. */
int tx_frags_to_ack;
/* Used for TX_MCAST types */
int16_t tx_status;
/* Used for debugging */
mfn_t tx_mfn;
RING_IDX tx_slot;
} xnf_txbuf_t;
#define TXBUF_SETNEXT(head, next) \
head->tx_next = next; \
next->tx_prev = head;
/*
* Information about each outstanding transmit operation.
*/
typedef struct xnf_txid {
uint16_t id; /* Id of this transmit buffer. */
uint16_t next; /* Freelist of ids. */
xnf_txbuf_t *txbuf; /* Buffer details. */
} xnf_txid_t;
/*
* Per-instance data.
*/
typedef struct xnf {
/* most interesting stuff first to assist debugging */
dev_info_t *xnf_devinfo;
mac_handle_t xnf_mh;
unsigned char xnf_mac_addr[ETHERADDRL];
uint32_t xnf_mtu;
unsigned int xnf_gen; /* Increments on resume. */
boolean_t xnf_connected;
boolean_t xnf_running;
boolean_t xnf_be_rx_copy;
boolean_t xnf_be_mcast_control;
boolean_t xnf_be_tx_sg;
boolean_t xnf_be_lso;
uint64_t xnf_stat_interrupts;
uint64_t xnf_stat_unclaimed_interrupts;
uint64_t xnf_stat_norxbuf;
uint64_t xnf_stat_rx_drop;
uint64_t xnf_stat_errrx;
uint64_t xnf_stat_tx_pullup;
uint64_t xnf_stat_tx_lookaside;
uint64_t xnf_stat_tx_defer;
uint64_t xnf_stat_tx_drop;
uint64_t xnf_stat_tx_eth_hdr_split;
uint64_t xnf_stat_mac_rcv_error;
uint64_t xnf_stat_runt;
uint64_t xnf_stat_ipackets;
uint64_t xnf_stat_opackets;
uint64_t xnf_stat_rbytes;
uint64_t xnf_stat_obytes;
uint64_t xnf_stat_tx_cksum_deferred;
uint64_t xnf_stat_rx_cksum_no_need;
uint64_t xnf_stat_buf_allocated;
uint64_t xnf_stat_buf_outstanding;
uint64_t xnf_stat_gref_outstanding;
uint64_t xnf_stat_gref_failure;
uint64_t xnf_stat_gref_peak;
uint64_t xnf_stat_rx_allocb_fail;
uint64_t xnf_stat_rx_desballoc_fail;
kstat_t *xnf_kstat_aux;
ddi_iblock_cookie_t xnf_icookie;
netif_tx_front_ring_t xnf_tx_ring;
ddi_dma_handle_t xnf_tx_ring_dma_handle;
ddi_acc_handle_t xnf_tx_ring_dma_acchandle;
paddr_t xnf_tx_ring_phys_addr;
grant_ref_t xnf_tx_ring_ref;
xnf_txid_t *xnf_tx_pkt_id;
uint16_t xnf_tx_pkt_id_head;
kmutex_t xnf_txlock;
kmutex_t xnf_schedlock;
boolean_t xnf_need_sched;
kcondvar_t xnf_cv_tx_slots;
kmem_cache_t *xnf_tx_buf_cache;
netif_rx_front_ring_t xnf_rx_ring;
ddi_dma_handle_t xnf_rx_ring_dma_handle;
ddi_acc_handle_t xnf_rx_ring_dma_acchandle;
paddr_t xnf_rx_ring_phys_addr;
grant_ref_t xnf_rx_ring_ref;
xnf_buf_t **xnf_rx_pkt_info;
kmutex_t xnf_rxlock;
mblk_t *xnf_rx_head;
mblk_t *xnf_rx_tail;
boolean_t xnf_rx_new_buffers_posted;
kmem_cache_t *xnf_buf_cache;
uint16_t xnf_evtchn;
kmutex_t xnf_gref_lock;
grant_ref_t xnf_gref_head;
kcondvar_t xnf_cv_state;
kcondvar_t xnf_cv_multicast;
uint_t xnf_pending_multicast;
} xnf_t;
#ifdef __cplusplus
}
#endif
#endif /* _SYS_XNF_H */
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