root/drivers/infiniband/hw/usnic/usnic_transport.h

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   1 /*
   2  * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  *
  32  */
  33 
  34 #ifndef USNIC_TRANSPORT_H_
  35 #define USNIC_TRANSPORT_H_
  36 
  37 #include "usnic_abi.h"
  38 
  39 const char *usnic_transport_to_str(enum usnic_transport_type trans_type);
  40 /*
  41  * Returns number of bytes written, excluding null terminator. If
  42  * nothing was written, the function returns 0.
  43  */
  44 int usnic_transport_sock_to_str(char *buf, int buf_sz,
  45                                         struct socket *sock);
  46 /*
  47  * Reserve a port. If "port_num" is set, then the function will try
  48  * to reserve that particular port.
  49  */
  50 u16 usnic_transport_rsrv_port(enum usnic_transport_type type, u16 port_num);
  51 void usnic_transport_unrsrv_port(enum usnic_transport_type type, u16 port_num);
  52 /*
  53  * Do a fget on the socket refered to by sock_fd and returns the socket.
  54  * Socket will not be destroyed before usnic_transport_put_socket has
  55  * been called.
  56  */
  57 struct socket *usnic_transport_get_socket(int sock_fd);
  58 void usnic_transport_put_socket(struct socket *sock);
  59 /*
  60  * Call usnic_transport_get_socket before calling *_sock_get_addr
  61  */
  62 int usnic_transport_sock_get_addr(struct socket *sock, int *proto,
  63                                         uint32_t *addr, uint16_t *port);
  64 int usnic_transport_init(void);
  65 void usnic_transport_fini(void);
  66 #endif /* !USNIC_TRANSPORT_H */
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