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9995a32b RDC |
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 | ||
9641458d | 29 | /* XXX: union-ify listening vs connected stuff ? */ |
9995a32b RDC |
30 | /* Listening socket stuff: */ |
31 | struct hlist_head ackq; | |
9641458d | 32 | struct hlist_head hlist; |
9995a32b RDC |
33 | |
34 | /* Connected socket stuff: */ | |
9641458d | 35 | struct sock *listener; |
c41bd97f RDC |
36 | struct sk_buff_head ctrlreq_queue; |
37 | #define PNPIPE_CTRLREQ_MAX 10 | |
be677730 | 38 | atomic_t tx_credits; |
02a47617 | 39 | int ifindex; |
9641458d RDC |
40 | u16 peer_type; /* peer type/subtype */ |
41 | u8 pipe_handle; | |
42 | ||
43 | u8 rx_credits; | |
9641458d RDC |
44 | u8 rx_fc; /* RX flow control */ |
45 | u8 tx_fc; /* TX flow control */ | |
46 | u8 init_enable; /* auto-enable at creation */ | |
9995a32b RDC |
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 | ||
9641458d RDC |
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 | ||
9995a32b | 160 | #endif |