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
13 #include <linux/skbuff.h>
14 #include <net/phonet/phonet.h>
19 /* XXX: union-ify listening vs connected stuff ? */
20 /* Listening socket stuff: */
21 struct hlist_head hlist;
23 /* Connected socket stuff: */
24 struct sock *listener;
25 struct sk_buff_head ctrlreq_queue;
26 #define PNPIPE_CTRLREQ_MAX 10
29 u16 peer_type; /* peer type/subtype */
33 u8 rx_fc; /* RX flow control */
34 u8 tx_fc; /* TX flow control */
35 u8 init_enable; /* auto-enable at creation */
39 static inline struct pep_sock *pep_sk(struct sock *sk)
41 return (struct pep_sock *)sk;
44 extern const struct proto_ops phonet_stream_ops;
46 /* Pipe protocol definitions */
48 u8 utid; /* transaction ID */
52 u8 state_after_connect; /* connect request */
53 u8 state_after_reset; /* reset request */
54 u8 error_code; /* any response */
55 u8 pep_type; /* status indication */
56 u8 data0; /* anything else */
60 #define other_pep_type data[0]
62 static inline struct pnpipehdr *pnp_hdr(struct sk_buff *skb)
64 return (struct pnpipehdr *)skb_transport_header(skb);
67 #define MAX_PNPIPE_HEADER (MAX_PHONET_HEADER + 4)
70 PNS_PIPE_CREATE_REQ = 0x00,
76 PNS_PIPE_ALIGNED_DATA,
78 PNS_PEP_CONNECT_REQ = 0x40,
80 PNS_PEP_DISCONNECT_REQ,
81 PNS_PEP_DISCONNECT_RESP,
88 PNS_PEP_DISABLE_REQ = 0x4C,
91 PNS_PEP_STATUS_IND = 0x60,
93 PNS_PIPE_RESET_IND = 0x63,
95 PNS_PIPE_REDIRECTED_IND,
96 PNS_PIPE_DISABLED_IND = 0x66,
99 #define PN_PIPE_INVALID_HANDLE 0xff
100 #define PN_PEP_TYPE_COMMON 0x00
102 /* Phonet pipe status indication */
104 PN_PEP_IND_FLOW_CONTROL,
105 PN_PEP_IND_ID_MCFC_GRANT_CREDITS,
108 /* Phonet pipe error codes */
111 PN_PIPE_ERR_INVALID_PARAM,
112 PN_PIPE_ERR_INVALID_HANDLE,
113 PN_PIPE_ERR_INVALID_CTRL_ID,
114 PN_PIPE_ERR_NOT_ALLOWED,
115 PN_PIPE_ERR_PEP_IN_USE,
116 PN_PIPE_ERR_OVERLOAD,
117 PN_PIPE_ERR_DEV_DISCONNECTED,
119 PN_PIPE_ERR_ALL_PIPES_IN_USE,
121 PN_PIPE_ERR_NOT_SUPPORTED,
124 /* Phonet pipe states */
130 /* Phonet pipe sub-block types */
132 PN_PIPE_SB_CREATE_REQ_PEP_SUB_TYPE,
133 PN_PIPE_SB_CONNECT_REQ_PEP_SUB_TYPE,
134 PN_PIPE_SB_REDIRECT_REQ_PEP_SUB_TYPE,
135 PN_PIPE_SB_NEGOTIATED_FC,
136 PN_PIPE_SB_REQUIRED_FC_TX,
137 PN_PIPE_SB_PREFERRED_FC_RX,
138 PN_PIPE_SB_ALIGNED_DATA,
141 /* Phonet pipe flow control models */
144 PN_LEGACY_FLOW_CONTROL,
145 PN_ONE_CREDIT_FLOW_CONTROL,
146 PN_MULTI_CREDIT_FLOW_CONTROL,
150 #define pn_flow_safe(fc) ((fc) >> 1)
152 /* Phonet pipe flow control states */