1 /* SPDX-License-Identifier: GPL-2.0-only */
5 * Phonet Pipe End Point sockets definitions
7 * Copyright (C) 2008 Nokia Corporation.
10 #ifndef NET_PHONET_PEP_H
11 #define NET_PHONET_PEP_H
16 /* XXX: union-ify listening vs connected stuff ? */
17 /* Listening socket stuff: */
18 struct hlist_head hlist;
20 /* Connected socket stuff: */
21 struct sock *listener;
22 struct sk_buff_head ctrlreq_queue;
23 #define PNPIPE_CTRLREQ_MAX 10
26 u16 peer_type; /* peer type/subtype */
30 u8 rx_fc; /* RX flow control */
31 u8 tx_fc; /* TX flow control */
32 u8 init_enable; /* auto-enable at creation */
36 static inline struct pep_sock *pep_sk(struct sock *sk)
38 return (struct pep_sock *)sk;
41 extern const struct proto_ops phonet_stream_ops;
43 /* Pipe protocol definitions */
45 u8 utid; /* transaction ID */
49 u8 state_after_connect; /* connect request */
50 u8 state_after_reset; /* reset request */
51 u8 error_code; /* any response */
52 u8 pep_type; /* status indication */
53 u8 data0; /* anything else */
57 #define other_pep_type data[0]
59 static inline struct pnpipehdr *pnp_hdr(struct sk_buff *skb)
61 return (struct pnpipehdr *)skb_transport_header(skb);
64 #define MAX_PNPIPE_HEADER (MAX_PHONET_HEADER + 4)
67 PNS_PIPE_CREATE_REQ = 0x00,
73 PNS_PIPE_ALIGNED_DATA,
75 PNS_PEP_CONNECT_REQ = 0x40,
77 PNS_PEP_DISCONNECT_REQ,
78 PNS_PEP_DISCONNECT_RESP,
85 PNS_PEP_DISABLE_REQ = 0x4C,
88 PNS_PEP_STATUS_IND = 0x60,
90 PNS_PIPE_RESET_IND = 0x63,
92 PNS_PIPE_REDIRECTED_IND,
93 PNS_PIPE_DISABLED_IND = 0x66,
96 #define PN_PIPE_INVALID_HANDLE 0xff
97 #define PN_PEP_TYPE_COMMON 0x00
99 /* Phonet pipe status indication */
101 PN_PEP_IND_FLOW_CONTROL,
102 PN_PEP_IND_ID_MCFC_GRANT_CREDITS,
105 /* Phonet pipe error codes */
108 PN_PIPE_ERR_INVALID_PARAM,
109 PN_PIPE_ERR_INVALID_HANDLE,
110 PN_PIPE_ERR_INVALID_CTRL_ID,
111 PN_PIPE_ERR_NOT_ALLOWED,
112 PN_PIPE_ERR_PEP_IN_USE,
113 PN_PIPE_ERR_OVERLOAD,
114 PN_PIPE_ERR_DEV_DISCONNECTED,
116 PN_PIPE_ERR_ALL_PIPES_IN_USE,
118 PN_PIPE_ERR_NOT_SUPPORTED,
121 /* Phonet pipe states */
127 /* Phonet pipe sub-block types */
129 PN_PIPE_SB_CREATE_REQ_PEP_SUB_TYPE,
130 PN_PIPE_SB_CONNECT_REQ_PEP_SUB_TYPE,
131 PN_PIPE_SB_REDIRECT_REQ_PEP_SUB_TYPE,
132 PN_PIPE_SB_NEGOTIATED_FC,
133 PN_PIPE_SB_REQUIRED_FC_TX,
134 PN_PIPE_SB_PREFERRED_FC_RX,
135 PN_PIPE_SB_ALIGNED_DATA,
138 /* Phonet pipe flow control models */
141 PN_LEGACY_FLOW_CONTROL,
142 PN_ONE_CREDIT_FLOW_CONTROL,
143 PN_MULTI_CREDIT_FLOW_CONTROL,
147 #define pn_flow_safe(fc) ((fc) >> 1)
149 /* Phonet pipe flow control states */