/* 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 "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; int queue_depth, 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; spinlock_t lock; struct net_device *dev; 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; struct tasklet_struct tx_poll; 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