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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2002 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
*/
#ifndef __UM_VECTOR_KERN_H
#define __UM_VECTOR_KERN_H
#include <linux/netdevice.h>
#include <linux/platform_device.h>
#include <linux/skbuff.h>
#include <linux/socket.h>
#include <linux/list.h>
#include <linux/ctype.h>
#include <linux/workqueue.h>
#include <linux/interrupt.h>
#include <asm/atomic.h>
#include "vector_user.h"
/* Queue structure specially adapted for multiple enqueue/dequeue
* in a mmsgrecv/mmsgsend context
*/
/* Dequeue method */
#define QUEUE_SENDMSG 0
#define QUEUE_SENDMMSG 1
#define VECTOR_RX 1
#define VECTOR_TX (1 << 1)
#define VECTOR_BPF (1 << 2)
#define VECTOR_QDISC_BYPASS (1 << 3)
#define VECTOR_BPF_FLASH (1 << 4)
#define ETH_MAX_PACKET 1500
#define ETH_HEADER_OTHER 32 /* just in case someone decides to go mad on QnQ */
#define MAX_FILTER_PROG (2 << 16)
struct vector_queue {
struct mmsghdr *mmsg_vector;
void **skbuff_vector;
/* backlink to device which owns us */
struct net_device *dev;
spinlock_t head_lock;
spinlock_t tail_lock;
atomic_t queue_depth;
int head, tail, max_depth, max_iov_frags;
short options;
};
struct vector_estats {
uint64_t rx_queue_max;
uint64_t rx_queue_running_average;
uint64_t tx_queue_max;
uint64_t tx_queue_running_average;
uint64_t rx_encaps_errors;
uint64_t tx_timeout_count;
uint64_t tx_restart_queue;
uint64_t tx_kicks;
uint64_t tx_flow_control_xon;
uint64_t tx_flow_control_xoff;
uint64_t rx_csum_offload_good;
uint64_t rx_csum_offload_errors;
uint64_t sg_ok;
uint64_t sg_linearized;
};
#define VERIFY_HEADER_NOK -1
#define VERIFY_HEADER_OK 0
#define VERIFY_CSUM_OK 1
struct vector_private {
struct list_head list;
struct net_device *dev;
struct napi_struct napi ____cacheline_aligned;
int unit;
/* Timeout timer in TX */
struct timer_list tl;
/* Scheduled "remove device" work */
struct work_struct reset_tx;
struct vector_fds *fds;
struct vector_queue *rx_queue;
struct vector_queue *tx_queue;
int rx_irq;
int tx_irq;
struct arglist *parsed;
void *transport_data; /* transport specific params if needed */
int max_packet;
int req_size; /* different from max packet - used for TSO */
int headroom;
int options;
/* remote address if any - some transports will leave this as null */
int header_size;
int rx_header_size;
int coalesce;
void *header_rxbuffer;
void *header_txbuffer;
int (*form_header)(uint8_t *header,
struct sk_buff *skb, struct vector_private *vp);
int (*verify_header)(uint8_t *header,
struct sk_buff *skb, struct vector_private *vp);
spinlock_t stats_lock;
bool rexmit_scheduled;
bool opened;
bool in_write_poll;
bool in_error;
/* guest allowed to use ethtool flash to load bpf */
bool bpf_via_flash;
/* ethtool stats */
struct vector_estats estats;
struct sock_fprog *bpf;
char user[];
};
extern int build_transport_data(struct vector_private *vp);
#endif
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