drivers/infiniband/hw/usnic/usnic_transport.h

   1 /*
   2  * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved.
   3  *
   4  * This program is free software; you may redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; version 2 of the License.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   9  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  10  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  11  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  12  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  13  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  14  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  15  * SOFTWARE.
  16  *
  17  */
  18
  19 #ifndef USNIC_TRANSPORT_H_
  20 #define USNIC_TRANSPORT_H_
  21
  22 #include "usnic_abi.h"
  23
  24 const char *usnic_transport_to_str(enum usnic_transport_type trans_type);
  25 /*
  26  * Returns number of bytes written, excluding null terminator. If
  27  * nothing was written, the function returns 0.
  28  */
  29 int usnic_transport_sock_to_str(char *buf, int buf_sz,
  30                                         struct socket *sock);
  31 /*
  32  * Reserve a port. If "port_num" is set, then the function will try
  33  * to reserve that particular port.
  34  */
  35 u16 usnic_transport_rsrv_port(enum usnic_transport_type type, u16 port_num);
  36 void usnic_transport_unrsrv_port(enum usnic_transport_type type, u16 port_num);
  37 /*
  38  * Do a fget on the socket refered to by sock_fd and returns the socket.
  39  * Socket will not be destroyed before usnic_transport_put_socket has
  40  * been called.
  41  */
  42 struct socket *usnic_transport_get_socket(int sock_fd);
  43 void usnic_transport_put_socket(struct socket *sock);
  44 /*
  45  * Call usnic_transport_get_socket before calling *_sock_get_addr
  46  */
  47 int usnic_transport_sock_get_addr(struct socket *sock, int *proto,
  48                                         uint32_t *addr, uint16_t *port);
  49 int usnic_transport_init(void);
  50 void usnic_transport_fini(void);
  51 #endif /* !USNIC_TRANSPORT_H */