Alex Dewar | dbddf42 | 2019-08-25 10:49:16 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
Anton Ivanov | 49da7e6 | 2017-11-20 21:17:59 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) 2002 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) |
Anton Ivanov | 49da7e6 | 2017-11-20 21:17:59 +0000 | [diff] [blame] | 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 | #include "vector_user.h" |
| 18 | |
| 19 | /* Queue structure specially adapted for multiple enqueue/dequeue |
| 20 | * in a mmsgrecv/mmsgsend context |
| 21 | */ |
| 22 | |
| 23 | /* Dequeue method */ |
| 24 | |
| 25 | #define QUEUE_SENDMSG 0 |
| 26 | #define QUEUE_SENDMMSG 1 |
| 27 | |
| 28 | #define VECTOR_RX 1 |
| 29 | #define VECTOR_TX (1 << 1) |
| 30 | #define VECTOR_BPF (1 << 2) |
Anton Ivanov | e40238d | 2018-03-05 13:29:05 +0000 | [diff] [blame] | 31 | #define VECTOR_QDISC_BYPASS (1 << 3) |
Anton Ivanov | 49da7e6 | 2017-11-20 21:17:59 +0000 | [diff] [blame] | 32 | |
| 33 | #define ETH_MAX_PACKET 1500 |
| 34 | #define ETH_HEADER_OTHER 32 /* just in case someone decides to go mad on QnQ */ |
| 35 | |
| 36 | struct vector_queue { |
| 37 | struct mmsghdr *mmsg_vector; |
| 38 | void **skbuff_vector; |
| 39 | /* backlink to device which owns us */ |
| 40 | struct net_device *dev; |
| 41 | spinlock_t head_lock; |
| 42 | spinlock_t tail_lock; |
| 43 | int queue_depth, head, tail, max_depth, max_iov_frags; |
| 44 | short options; |
| 45 | }; |
| 46 | |
| 47 | struct vector_estats { |
| 48 | uint64_t rx_queue_max; |
| 49 | uint64_t rx_queue_running_average; |
| 50 | uint64_t tx_queue_max; |
| 51 | uint64_t tx_queue_running_average; |
| 52 | uint64_t rx_encaps_errors; |
| 53 | uint64_t tx_timeout_count; |
| 54 | uint64_t tx_restart_queue; |
| 55 | uint64_t tx_kicks; |
| 56 | uint64_t tx_flow_control_xon; |
| 57 | uint64_t tx_flow_control_xoff; |
| 58 | uint64_t rx_csum_offload_good; |
| 59 | uint64_t rx_csum_offload_errors; |
| 60 | uint64_t sg_ok; |
| 61 | uint64_t sg_linearized; |
| 62 | }; |
| 63 | |
| 64 | #define VERIFY_HEADER_NOK -1 |
| 65 | #define VERIFY_HEADER_OK 0 |
| 66 | #define VERIFY_CSUM_OK 1 |
| 67 | |
| 68 | struct vector_private { |
| 69 | struct list_head list; |
| 70 | spinlock_t lock; |
| 71 | struct net_device *dev; |
| 72 | |
| 73 | int unit; |
| 74 | |
| 75 | /* Timeout timer in TX */ |
| 76 | |
| 77 | struct timer_list tl; |
| 78 | |
| 79 | /* Scheduled "remove device" work */ |
| 80 | struct work_struct reset_tx; |
| 81 | struct vector_fds *fds; |
| 82 | |
| 83 | struct vector_queue *rx_queue; |
| 84 | struct vector_queue *tx_queue; |
| 85 | |
| 86 | int rx_irq; |
| 87 | int tx_irq; |
| 88 | |
| 89 | struct arglist *parsed; |
| 90 | |
| 91 | void *transport_data; /* transport specific params if needed */ |
| 92 | |
| 93 | int max_packet; |
| 94 | int req_size; /* different from max packet - used for TSO */ |
| 95 | int headroom; |
| 96 | |
| 97 | int options; |
| 98 | |
| 99 | /* remote address if any - some transports will leave this as null */ |
| 100 | |
| 101 | int header_size; |
| 102 | int rx_header_size; |
| 103 | int coalesce; |
| 104 | |
| 105 | void *header_rxbuffer; |
| 106 | void *header_txbuffer; |
| 107 | |
| 108 | int (*form_header)(uint8_t *header, |
| 109 | struct sk_buff *skb, struct vector_private *vp); |
| 110 | int (*verify_header)(uint8_t *header, |
| 111 | struct sk_buff *skb, struct vector_private *vp); |
| 112 | |
| 113 | spinlock_t stats_lock; |
| 114 | |
| 115 | struct tasklet_struct tx_poll; |
| 116 | bool rexmit_scheduled; |
| 117 | bool opened; |
| 118 | bool in_write_poll; |
Anton Ivanov | d47761d | 2019-08-09 08:40:20 +0100 | [diff] [blame] | 119 | bool in_error; |
Anton Ivanov | 49da7e6 | 2017-11-20 21:17:59 +0000 | [diff] [blame] | 120 | |
| 121 | /* ethtool stats */ |
| 122 | |
| 123 | struct vector_estats estats; |
| 124 | void *bpf; |
| 125 | |
| 126 | char user[0]; |
| 127 | }; |
| 128 | |
| 129 | extern int build_transport_data(struct vector_private *vp); |
| 130 | |
| 131 | #endif |