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C/C++ Source or Header  |  2008-12-24  |  3.6 KB  |  161 lines
  1. /*
  2.  * File: pep.h
  3.  *
  4.  * Phonet Pipe End Point sockets definitions
  5.  *
  6.  * Copyright (C) 2008 Nokia Corporation.
  7.  *
  8.  * This program is free software; you can redistribute it and/or
  9.  * modify it under the terms of the GNU General Public License
  10.  * version 2 as published by the Free Software Foundation.
  11.  *
  12.  * This program is distributed in the hope that it will be useful, but
  13.  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15.  * General Public License for more details.
  16.  *
  17.  * You should have received a copy of the GNU General Public License
  18.  * along with this program; if not, write to the Free Software
  19.  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20.  * 02110-1301 USA
  21.  */
  22.  
  23. #ifndef NET_PHONET_PEP_H
  24. #define NET_PHONET_PEP_H
  25.  
  26. struct pep_sock {
  27.     struct pn_sock        pn_sk;
  28.  
  29.     /* XXX: union-ify listening vs connected stuff ? */
  30.     /* Listening socket stuff: */
  31.     struct hlist_head    ackq;
  32.     struct hlist_head    hlist;
  33.  
  34.     /* Connected socket stuff: */
  35.     struct sock        *listener;
  36.     struct sk_buff_head    ctrlreq_queue;
  37. #define PNPIPE_CTRLREQ_MAX    10
  38.     int            ifindex;
  39.     u16            peer_type;    /* peer type/subtype */
  40.     u8            pipe_handle;
  41.  
  42.     u8            rx_credits;
  43.     u8            tx_credits;
  44.     u8            rx_fc;    /* RX flow control */
  45.     u8            tx_fc;    /* TX flow control */
  46.     u8            init_enable;    /* auto-enable at creation */
  47. };
  48.  
  49. static inline struct pep_sock *pep_sk(struct sock *sk)
  50. {
  51.     return (struct pep_sock *)sk;
  52. }
  53.  
  54. extern const struct proto_ops phonet_stream_ops;
  55.  
  56. /* Pipe protocol definitions */
  57. struct pnpipehdr {
  58.     u8            utid; /* transaction ID */
  59.     u8            message_id;
  60.     u8            pipe_handle;
  61.     union {
  62.         u8        state_after_connect;    /* connect request */
  63.         u8        state_after_reset;    /* reset request */
  64.         u8        error_code;        /* any response */
  65.         u8        pep_type;        /* status indication */
  66.         u8        data[1];
  67.     };
  68. };
  69. #define other_pep_type        data[1]
  70.  
  71. static inline struct pnpipehdr *pnp_hdr(struct sk_buff *skb)
  72. {
  73.     return (struct pnpipehdr *)skb_transport_header(skb);
  74. }
  75.  
  76. #define MAX_PNPIPE_HEADER (MAX_PHONET_HEADER + 4)
  77.  
  78. enum {
  79.     PNS_PIPE_DATA = 0x20,
  80.  
  81.     PNS_PEP_CONNECT_REQ = 0x40,
  82.     PNS_PEP_CONNECT_RESP,
  83.     PNS_PEP_DISCONNECT_REQ,
  84.     PNS_PEP_DISCONNECT_RESP,
  85.     PNS_PEP_RESET_REQ,
  86.     PNS_PEP_RESET_RESP,
  87.     PNS_PEP_ENABLE_REQ,
  88.     PNS_PEP_ENABLE_RESP,
  89.     PNS_PEP_CTRL_REQ,
  90.     PNS_PEP_CTRL_RESP,
  91.     PNS_PEP_DISABLE_REQ = 0x4C,
  92.     PNS_PEP_DISABLE_RESP,
  93.  
  94.     PNS_PEP_STATUS_IND = 0x60,
  95.     PNS_PIPE_CREATED_IND,
  96.     PNS_PIPE_RESET_IND = 0x63,
  97.     PNS_PIPE_ENABLED_IND,
  98.     PNS_PIPE_REDIRECTED_IND,
  99.     PNS_PIPE_DISABLED_IND = 0x66,
  100. };
  101.  
  102. #define PN_PIPE_INVALID_HANDLE    0xff
  103. #define PN_PEP_TYPE_COMMON    0x00
  104.  
  105. /* Phonet pipe status indication */
  106. enum {
  107.     PN_PEP_IND_FLOW_CONTROL,
  108.     PN_PEP_IND_ID_MCFC_GRANT_CREDITS,
  109. };
  110.  
  111. /* Phonet pipe error codes */
  112. enum {
  113.     PN_PIPE_NO_ERROR,
  114.     PN_PIPE_ERR_INVALID_PARAM,
  115.     PN_PIPE_ERR_INVALID_HANDLE,
  116.     PN_PIPE_ERR_INVALID_CTRL_ID,
  117.     PN_PIPE_ERR_NOT_ALLOWED,
  118.     PN_PIPE_ERR_PEP_IN_USE,
  119.     PN_PIPE_ERR_OVERLOAD,
  120.     PN_PIPE_ERR_DEV_DISCONNECTED,
  121.     PN_PIPE_ERR_TIMEOUT,
  122.     PN_PIPE_ERR_ALL_PIPES_IN_USE,
  123.     PN_PIPE_ERR_GENERAL,
  124.     PN_PIPE_ERR_NOT_SUPPORTED,
  125. };
  126.  
  127. /* Phonet pipe states */
  128. enum {
  129.     PN_PIPE_DISABLE,
  130.     PN_PIPE_ENABLE,
  131. };
  132.  
  133. /* Phonet pipe sub-block types */
  134. enum {
  135.     PN_PIPE_SB_CREATE_REQ_PEP_SUB_TYPE,
  136.     PN_PIPE_SB_CONNECT_REQ_PEP_SUB_TYPE,
  137.     PN_PIPE_SB_REDIRECT_REQ_PEP_SUB_TYPE,
  138.     PN_PIPE_SB_NEGOTIATED_FC,
  139.     PN_PIPE_SB_REQUIRED_FC_TX,
  140.     PN_PIPE_SB_PREFERRED_FC_RX,
  141. };
  142.  
  143. /* Phonet pipe flow control models */
  144. enum {
  145.     PN_NO_FLOW_CONTROL,
  146.     PN_LEGACY_FLOW_CONTROL,
  147.     PN_ONE_CREDIT_FLOW_CONTROL,
  148.     PN_MULTI_CREDIT_FLOW_CONTROL,
  149. };
  150.  
  151. #define pn_flow_safe(fc) ((fc) >> 1)
  152.  
  153. /* Phonet pipe flow control states */
  154. enum {
  155.     PEP_IND_EMPTY,
  156.     PEP_IND_BUSY,
  157.     PEP_IND_READY,
  158. };
  159.  
  160. #endif
  161.