cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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vector_kern.h (2947B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * Copyright (C) 2002 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
      4 */
      5
      6#ifndef __UM_VECTOR_KERN_H
      7#define __UM_VECTOR_KERN_H
      8
      9#include <linux/netdevice.h>
     10#include <linux/platform_device.h>
     11#include <linux/skbuff.h>
     12#include <linux/socket.h>
     13#include <linux/list.h>
     14#include <linux/ctype.h>
     15#include <linux/workqueue.h>
     16#include <linux/interrupt.h>
     17
     18#include "vector_user.h"
     19
     20/* Queue structure specially adapted for multiple enqueue/dequeue
     21 * in a mmsgrecv/mmsgsend context
     22 */
     23
     24/* Dequeue method */
     25
     26#define QUEUE_SENDMSG 0
     27#define QUEUE_SENDMMSG 1
     28
     29#define VECTOR_RX 1
     30#define VECTOR_TX (1 << 1)
     31#define VECTOR_BPF (1 << 2)
     32#define VECTOR_QDISC_BYPASS (1 << 3)
     33#define VECTOR_BPF_FLASH (1 << 4)
     34
     35#define ETH_MAX_PACKET 1500
     36#define ETH_HEADER_OTHER 32 /* just in case someone decides to go mad on QnQ */
     37
     38#define MAX_FILTER_PROG (2 << 16)
     39
     40struct vector_queue {
     41	struct mmsghdr *mmsg_vector;
     42	void **skbuff_vector;
     43	 /* backlink to device which owns us */
     44	struct net_device *dev;
     45	spinlock_t head_lock;
     46	spinlock_t tail_lock;
     47	int queue_depth, head, tail, max_depth, max_iov_frags;
     48	short options;
     49};
     50
     51struct vector_estats {
     52	uint64_t rx_queue_max;
     53	uint64_t rx_queue_running_average;
     54	uint64_t tx_queue_max;
     55	uint64_t tx_queue_running_average;
     56	uint64_t rx_encaps_errors;
     57	uint64_t tx_timeout_count;
     58	uint64_t tx_restart_queue;
     59	uint64_t tx_kicks;
     60	uint64_t tx_flow_control_xon;
     61	uint64_t tx_flow_control_xoff;
     62	uint64_t rx_csum_offload_good;
     63	uint64_t rx_csum_offload_errors;
     64	uint64_t sg_ok;
     65	uint64_t sg_linearized;
     66};
     67
     68#define VERIFY_HEADER_NOK -1
     69#define VERIFY_HEADER_OK 0
     70#define VERIFY_CSUM_OK 1
     71
     72struct vector_private {
     73	struct list_head list;
     74	spinlock_t lock;
     75	struct net_device *dev;
     76	struct napi_struct		napi	____cacheline_aligned;
     77
     78	int unit;
     79
     80	/* Timeout timer in TX */
     81
     82	struct timer_list tl;
     83
     84	/* Scheduled "remove device" work */
     85	struct work_struct reset_tx;
     86	struct vector_fds *fds;
     87
     88	struct vector_queue *rx_queue;
     89	struct vector_queue *tx_queue;
     90
     91	int rx_irq;
     92	int tx_irq;
     93
     94	struct arglist *parsed;
     95
     96	void *transport_data; /* transport specific params if needed */
     97
     98	int max_packet;
     99	int req_size; /* different from max packet - used for TSO */
    100	int headroom;
    101
    102	int options;
    103
    104	/* remote address if any - some transports will leave this as null */
    105
    106	int header_size;
    107	int rx_header_size;
    108	int coalesce;
    109
    110	void *header_rxbuffer;
    111	void *header_txbuffer;
    112
    113	int (*form_header)(uint8_t *header,
    114		struct sk_buff *skb, struct vector_private *vp);
    115	int (*verify_header)(uint8_t *header,
    116		struct sk_buff *skb, struct vector_private *vp);
    117
    118	spinlock_t stats_lock;
    119
    120	bool rexmit_scheduled;
    121	bool opened;
    122	bool in_write_poll;
    123	bool in_error;
    124
    125	/* guest allowed to use ethtool flash to load bpf */
    126	bool bpf_via_flash;
    127
    128	/* ethtool stats */
    129
    130	struct vector_estats estats;
    131	struct sock_fprog *bpf;
    132
    133	char user[];
    134};
    135
    136extern int build_transport_data(struct vector_private *vp);
    137
    138#endif