blob: 3ea769872f78c12f04b315aacd51eb7e65e07ab1 [file] [log] [blame]
#ifndef KVM__VIRTIO_9P_H
#define KVM__VIRTIO_9P_H
#include "kvm/virtio.h"
#include "kvm/pci.h"
#include "kvm/threadpool.h"
#include "kvm/parse-options.h"
#include <dirent.h>
#include <linux/list.h>
#include <linux/rbtree.h>
#define NUM_VIRT_QUEUES 1
#define VIRTQUEUE_NUM 128
#define VIRTIO_9P_DEFAULT_TAG "kvm_9p"
#define VIRTIO_9P_HDR_LEN (sizeof(u32)+sizeof(u8)+sizeof(u16))
#define VIRTIO_9P_VERSION_DOTL "9P2000.L"
#define MAX_TAG_LEN 32
struct p9_msg {
u32 size;
u8 cmd;
u16 tag;
u8 msg[0];
} __attribute__((packed));
struct p9_fid {
u32 fid;
u32 uid;
char abs_path[PATH_MAX];
char *path;
DIR *dir;
int fd;
struct rb_node node;
};
struct p9_dev_job {
struct virt_queue *vq;
struct p9_dev *p9dev;
struct thread_pool__job job_id;
};
struct p9_dev {
struct list_head list;
struct virtio_device vdev;
struct rb_root fids;
struct virtio_9p_config *config;
u32 features;
/* virtio queue */
struct virt_queue vqs[NUM_VIRT_QUEUES];
struct p9_dev_job jobs[NUM_VIRT_QUEUES];
char root_dir[PATH_MAX];
};
struct p9_pdu {
u32 queue_head;
size_t read_offset;
size_t write_offset;
u16 out_iov_cnt;
u16 in_iov_cnt;
struct iovec in_iov[VIRTQUEUE_NUM];
struct iovec out_iov[VIRTQUEUE_NUM];
};
struct kvm;
int virtio_9p_rootdir_parser(const struct option *opt, const char *arg, int unset);
int virtio_9p_img_name_parser(const struct option *opt, const char *arg, int unset);
int virtio_9p__register(struct kvm *kvm, const char *root, const char *tag_name);
int virtio_9p__init(struct kvm *kvm);
int virtio_p9_pdu_readf(struct p9_pdu *pdu, const char *fmt, ...);
int virtio_p9_pdu_writef(struct p9_pdu *pdu, const char *fmt, ...);
#endif