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author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-11 16:36:47 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-11 16:36:47 -0700 |
commit | 375479c38689fbc403cf57b2999278615a4163f5 (patch) | |
tree | da9565f449ab769802bce0f69cb41e74c4dfb605 /arch/um/drivers/vector_kern.h | |
parent | 45df60cd2cbe2a8c32fd34e474b62b2b41bacf69 (diff) | |
parent | e40238dedb484c8a19f8257e4ef5d77d038f9ad8 (diff) | |
download | op-kernel-dev-375479c38689fbc403cf57b2999278615a4163f5.zip op-kernel-dev-375479c38689fbc403cf57b2999278615a4163f5.tar.gz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml
Pull UML updates from Richard Weinberger:
- a new and faster epoll based IRQ controller and NIC driver
- misc fixes and janitorial updates
* git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
Fix vector raw inintialization logic
Migrate vector timers to new timer API
um: Compile with modern headers
um: vector: Fix an error handling path in 'vector_parse()'
um: vector: Fix a memory allocation check
um: vector: fix missing unlock on error in vector_net_open()
um: Add missing EXPORT for free_irq_by_fd()
High Performance UML Vector Network Driver
Epoll based IRQ controller
um: Use POSIX ucontext_t instead of struct ucontext
um: time: Use timespec64 for persistent clock
um: Restore symbol versions for __memcpy and memcpy
Diffstat (limited to 'arch/um/drivers/vector_kern.h')
-rw-r--r-- | arch/um/drivers/vector_kern.h | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/arch/um/drivers/vector_kern.h b/arch/um/drivers/vector_kern.h new file mode 100644 index 0000000..0b0a767 --- /dev/null +++ b/arch/um/drivers/vector_kern.h @@ -0,0 +1,130 @@ +/* + * Copyright (C) 2002 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) + * Licensed under the GPL + */ + +#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 ETH_MAX_PACKET 1500 +#define ETH_HEADER_OTHER 32 /* just in case someone decides to go mad on QnQ */ + +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; + + /* ethtool stats */ + + struct vector_estats estats; + void *bpf; + + char user[0]; +}; + +extern int build_transport_data(struct vector_private *vp); + +#endif |