hv_sock.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2020 Microsoft Corp.
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice unmodified, this list of conditions, and the following
   12  *    disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   27  *
   28  * $FreeBSD$
   29  */
   30 
   31 #ifndef _HVSOCK_H
   32 #define _HVSOCK_H
   33 #include <sys/socket.h>
   34 #include <sys/socketvar.h>
   35 #include <sys/queue.h>
   36 
   37 #include <dev/hyperv/include/hyperv.h>
   38 #include <dev/hyperv/include/vmbus.h>
   39 
   40 /*
   41  * HyperV Socket Protocols
   42  */
   43 #define HYPERV_SOCK_PROTO_TRANS         1       /* Transport protocol */
   44 
   45 #define HVADDR_PORT_ANY                 -1U
   46 #define HVADDR_PORT_UNKNOWN             -1U
   47 
   48 #define HVS_LIST_BOUND                  0x01
   49 #define HVS_LIST_CONNECTED              0x02
   50 #define HVS_LIST_ALL                    (HVS_LIST_BOUND | HVS_LIST_CONNECTED)
   51 
   52 struct sockaddr_hvs {
   53         unsigned char   sa_len;
   54         sa_family_t     sa_family;
   55         unsigned int    hvs_port;
   56         unsigned char   hvs_zero[sizeof(struct sockaddr) -
   57                                  sizeof(sa_family_t) -
   58                                  sizeof(unsigned char) -
   59                                  sizeof(unsigned int)];
   60 };
   61 
   62 struct vmpipe_proto_header {
   63         uint32_t                        vmpipe_pkt_type;
   64         uint32_t                        vmpipe_data_size;
   65 } __packed;
   66 
   67 struct hvs_pkt_header {
   68         struct vmbus_chanpkt_hdr        chan_pkt_hdr;
   69         struct vmpipe_proto_header      vmpipe_pkt_hdr;
   70 } __packed;
   71 
   72 struct hvs_pcb {
   73         struct socket                   *so;            /* Pointer to socket */
   74         struct sockaddr_hvs             local_addr;
   75         struct sockaddr_hvs             remote_addr;
   76 
   77         struct hyperv_guid              vm_srv_id;
   78         struct hyperv_guid              host_srv_id;
   79 
   80         struct vmbus_channel            *chan;
   81         /* Current packet header on rx ring */
   82         struct hvs_pkt_header           hvs_pkt;
   83         /* Available data in receive br in current packet */
   84         uint32_t                        recv_data_len;
   85         /* offset in the packet */
   86         uint32_t                        recv_data_off;
   87         bool                            rb_init;
   88         /* Link lists for global bound and connected sockets */
   89         LIST_ENTRY(hvs_pcb)             bound_next;
   90         LIST_ENTRY(hvs_pcb)             connected_next;
   91 };
   92 
   93 #define so2hvspcb(so) \
   94         ((struct hvs_pcb *)((so)->so_pcb))
   95 #define hsvpcb2so(hvspcb) \
   96         ((struct socket *)((hvspcb)->so))
   97 
   98 void    hvs_addr_init(struct sockaddr_hvs *, const struct hyperv_guid *);
   99 void    hvs_trans_close(struct socket *);
  100 void    hvs_trans_detach(struct socket *);
  101 void    hvs_trans_abort(struct socket *);
  102 int     hvs_trans_attach(struct socket *, int, struct thread *);
  103 int     hvs_trans_bind(struct socket *, struct sockaddr *, struct thread *);
  104 int     hvs_trans_listen(struct socket *, int, struct thread *);
  105 int     hvs_trans_accept(struct socket *, struct sockaddr **);
  106 int     hvs_trans_connect(struct socket *,
  107             struct sockaddr *, struct thread *);
  108 int     hvs_trans_peeraddr(struct socket *, struct sockaddr **);
  109 int     hvs_trans_sockaddr(struct socket *, struct sockaddr **);
  110 int     hvs_trans_soreceive(struct socket *, struct sockaddr **,
  111             struct uio *, struct mbuf **, struct mbuf **, int *);
  112 int     hvs_trans_sosend(struct socket *, struct sockaddr *, struct uio *,
  113              struct mbuf *, struct mbuf *, int, struct thread *);
  114 int     hvs_trans_disconnect(struct socket *);
  115 int     hvs_trans_shutdown(struct socket *);
  116 
  117 int     hvs_trans_lock(void);
  118 void    hvs_trans_unlock(void);
  119 
  120 void    hvs_remove_socket_from_list(struct socket *, unsigned char);
  121 #endif /* _HVSOCK_H */

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FreeBSD/Linux Kernel Cross Reference sys/dev/hyperv/hvsock/hv_sock.h

FreeBSD/Linux Kernel Cross Reference
sys/dev/hyperv/hvsock/hv_sock.h