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-rw-r--r--include/net/phonet/pep.h160
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diff --git a/include/net/phonet/pep.h b/include/net/phonet/pep.h
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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
26struct 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
49static inline struct pep_sock *pep_sk(struct sock *sk)
50{
51 return (struct pep_sock *)sk;
52}
53
54extern const struct proto_ops phonet_stream_ops;
55
56/* Pipe protocol definitions */
57struct 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
71static 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
78enum {
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 */
106enum {
107 PN_PEP_IND_FLOW_CONTROL,
108 PN_PEP_IND_ID_MCFC_GRANT_CREDITS,
109};
110
111/* Phonet pipe error codes */
112enum {
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 */
128enum {
129 PN_PIPE_DISABLE,
130 PN_PIPE_ENABLE,
131};
132
133/* Phonet pipe sub-block types */
134enum {
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 */
144enum {
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 */
154enum {
155 PEP_IND_EMPTY,
156 PEP_IND_BUSY,
157 PEP_IND_READY,
158};
159
160#endif