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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef LLC_C_EV_H
3#define LLC_C_EV_H
4/*
5 * Copyright (c) 1997 by Procom Technology,Inc.
6 * 2001 by Arnaldo Carvalho de Melo <[email protected]>
7 */
8
9#include <net/sock.h>
10
11/* Connection component state transition event qualifiers */
12/* Types of events (possible values in 'ev->type') */
13#define LLC_CONN_EV_TYPE_SIMPLE 1
14#define LLC_CONN_EV_TYPE_CONDITION 2
15#define LLC_CONN_EV_TYPE_PRIM 3
16#define LLC_CONN_EV_TYPE_PDU 4 /* command/response PDU */
17#define LLC_CONN_EV_TYPE_ACK_TMR 5
18#define LLC_CONN_EV_TYPE_P_TMR 6
19#define LLC_CONN_EV_TYPE_REJ_TMR 7
20#define LLC_CONN_EV_TYPE_BUSY_TMR 8
21#define LLC_CONN_EV_TYPE_RPT_STATUS 9
22#define LLC_CONN_EV_TYPE_SENDACK_TMR 10
23
24#define NBR_CONN_EV 5
25/* Connection events which cause state transitions when fully qualified */
26
27#define LLC_CONN_EV_CONN_REQ 1
28#define LLC_CONN_EV_CONN_RESP 2
29#define LLC_CONN_EV_DATA_REQ 3
30#define LLC_CONN_EV_DISC_REQ 4
31#define LLC_CONN_EV_RESET_REQ 5
32#define LLC_CONN_EV_RESET_RESP 6
33#define LLC_CONN_EV_LOCAL_BUSY_DETECTED 7
34#define LLC_CONN_EV_LOCAL_BUSY_CLEARED 8
35#define LLC_CONN_EV_RX_BAD_PDU 9
36#define LLC_CONN_EV_RX_DISC_CMD_Pbit_SET_X 10
37#define LLC_CONN_EV_RX_DM_RSP_Fbit_SET_X 11
38#define LLC_CONN_EV_RX_FRMR_RSP_Fbit_SET_X 12
39#define LLC_CONN_EV_RX_I_CMD_Pbit_SET_X 13
40#define LLC_CONN_EV_RX_I_CMD_Pbit_SET_X_UNEXPD_Ns 14
41#define LLC_CONN_EV_RX_I_CMD_Pbit_SET_X_INVAL_Ns 15
42#define LLC_CONN_EV_RX_I_RSP_Fbit_SET_X 16
43#define LLC_CONN_EV_RX_I_RSP_Fbit_SET_X_UNEXPD_Ns 17
44#define LLC_CONN_EV_RX_I_RSP_Fbit_SET_X_INVAL_Ns 18
45#define LLC_CONN_EV_RX_REJ_CMD_Pbit_SET_X 19
46#define LLC_CONN_EV_RX_REJ_RSP_Fbit_SET_X 20
47#define LLC_CONN_EV_RX_RNR_CMD_Pbit_SET_X 21
48#define LLC_CONN_EV_RX_RNR_RSP_Fbit_SET_X 22
49#define LLC_CONN_EV_RX_RR_CMD_Pbit_SET_X 23
50#define LLC_CONN_EV_RX_RR_RSP_Fbit_SET_X 24
51#define LLC_CONN_EV_RX_SABME_CMD_Pbit_SET_X 25
52#define LLC_CONN_EV_RX_UA_RSP_Fbit_SET_X 26
53#define LLC_CONN_EV_RX_XXX_CMD_Pbit_SET_X 27
54#define LLC_CONN_EV_RX_XXX_RSP_Fbit_SET_X 28
55#define LLC_CONN_EV_RX_XXX_YYY 29
56#define LLC_CONN_EV_RX_ZZZ_CMD_Pbit_SET_X_INVAL_Nr 30
57#define LLC_CONN_EV_RX_ZZZ_RSP_Fbit_SET_X_INVAL_Nr 31
58#define LLC_CONN_EV_P_TMR_EXP 32
59#define LLC_CONN_EV_ACK_TMR_EXP 33
60#define LLC_CONN_EV_REJ_TMR_EXP 34
61#define LLC_CONN_EV_BUSY_TMR_EXP 35
62#define LLC_CONN_EV_RX_XXX_CMD_Pbit_SET_1 36
63#define LLC_CONN_EV_RX_XXX_CMD_Pbit_SET_0 37
64#define LLC_CONN_EV_RX_I_CMD_Pbit_SET_0_UNEXPD_Ns 38
65#define LLC_CONN_EV_RX_I_RSP_Fbit_SET_0_UNEXPD_Ns 39
66#define LLC_CONN_EV_RX_I_RSP_Fbit_SET_1_UNEXPD_Ns 40
67#define LLC_CONN_EV_RX_I_CMD_Pbit_SET_1_UNEXPD_Ns 41
68#define LLC_CONN_EV_RX_I_CMD_Pbit_SET_0 42
69#define LLC_CONN_EV_RX_I_RSP_Fbit_SET_0 43
70#define LLC_CONN_EV_RX_I_CMD_Pbit_SET_1 44
71#define LLC_CONN_EV_RX_RR_CMD_Pbit_SET_0 45
72#define LLC_CONN_EV_RX_RR_RSP_Fbit_SET_0 46
73#define LLC_CONN_EV_RX_RR_RSP_Fbit_SET_1 47
74#define LLC_CONN_EV_RX_RR_CMD_Pbit_SET_1 48
75#define LLC_CONN_EV_RX_RNR_CMD_Pbit_SET_0 49
76#define LLC_CONN_EV_RX_RNR_RSP_Fbit_SET_0 50
77#define LLC_CONN_EV_RX_RNR_RSP_Fbit_SET_1 51
78#define LLC_CONN_EV_RX_RNR_CMD_Pbit_SET_1 52
79#define LLC_CONN_EV_RX_REJ_CMD_Pbit_SET_0 53
80#define LLC_CONN_EV_RX_REJ_RSP_Fbit_SET_0 54
81#define LLC_CONN_EV_RX_REJ_CMD_Pbit_SET_1 55
82#define LLC_CONN_EV_RX_I_RSP_Fbit_SET_1 56
83#define LLC_CONN_EV_RX_REJ_RSP_Fbit_SET_1 57
84#define LLC_CONN_EV_RX_XXX_RSP_Fbit_SET_1 58
85#define LLC_CONN_EV_TX_BUFF_FULL 59
86
87#define LLC_CONN_EV_INIT_P_F_CYCLE 100
88/*
89 * Connection event qualifiers; for some events a certain combination of
90 * these qualifiers must be TRUE before event recognized valid for state;
91 * these constants act as indexes into the Event Qualifier function
92 * table
93 */
94#define LLC_CONN_EV_QFY_DATA_FLAG_EQ_1 1
95#define LLC_CONN_EV_QFY_DATA_FLAG_EQ_0 2
96#define LLC_CONN_EV_QFY_DATA_FLAG_EQ_2 3
97#define LLC_CONN_EV_QFY_P_FLAG_EQ_1 4
98#define LLC_CONN_EV_QFY_P_FLAG_EQ_0 5
99#define LLC_CONN_EV_QFY_P_FLAG_EQ_Fbit 6
100#define LLC_CONN_EV_QFY_REMOTE_BUSY_EQ_0 7
101#define LLC_CONN_EV_QFY_RETRY_CNT_LT_N2 8
102#define LLC_CONN_EV_QFY_RETRY_CNT_GTE_N2 9
103#define LLC_CONN_EV_QFY_S_FLAG_EQ_1 10
104#define LLC_CONN_EV_QFY_S_FLAG_EQ_0 11
105#define LLC_CONN_EV_QFY_INIT_P_F_CYCLE 12
106
107struct llc_conn_state_ev {
108 u8 type;
109 u8 prim;
110 u8 prim_type;
111 u8 reason;
112 u8 status;
113 u8 ind_prim;
114 u8 cfm_prim;
115};
116
117static __inline__ struct llc_conn_state_ev *llc_conn_ev(struct sk_buff *skb)
118{
119 return (struct llc_conn_state_ev *)skb->cb;
120}
121
122typedef int (*llc_conn_ev_t)(struct sock *sk, struct sk_buff *skb);
123typedef int (*llc_conn_ev_qfyr_t)(struct sock *sk, struct sk_buff *skb);
124
125int llc_conn_ev_conn_req(struct sock *sk, struct sk_buff *skb);
126int llc_conn_ev_data_req(struct sock *sk, struct sk_buff *skb);
127int llc_conn_ev_disc_req(struct sock *sk, struct sk_buff *skb);
128int llc_conn_ev_rst_req(struct sock *sk, struct sk_buff *skb);
129int llc_conn_ev_local_busy_detected(struct sock *sk, struct sk_buff *skb);
130int llc_conn_ev_local_busy_cleared(struct sock *sk, struct sk_buff *skb);
131int llc_conn_ev_rx_bad_pdu(struct sock *sk, struct sk_buff *skb);
132int llc_conn_ev_rx_disc_cmd_pbit_set_x(struct sock *sk, struct sk_buff *skb);
133int llc_conn_ev_rx_dm_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb);
134int llc_conn_ev_rx_frmr_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb);
135int llc_conn_ev_rx_i_cmd_pbit_set_x_inval_ns(struct sock *sk,
136 struct sk_buff *skb);
137int llc_conn_ev_rx_i_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb);
138int llc_conn_ev_rx_i_rsp_fbit_set_x_unexpd_ns(struct sock *sk,
139 struct sk_buff *skb);
140int llc_conn_ev_rx_i_rsp_fbit_set_x_inval_ns(struct sock *sk,
141 struct sk_buff *skb);
142int llc_conn_ev_rx_rej_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb);
143int llc_conn_ev_rx_sabme_cmd_pbit_set_x(struct sock *sk, struct sk_buff *skb);
144int llc_conn_ev_rx_ua_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb);
145int llc_conn_ev_rx_xxx_cmd_pbit_set_x(struct sock *sk, struct sk_buff *skb);
146int llc_conn_ev_rx_xxx_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb);
147int llc_conn_ev_rx_zzz_cmd_pbit_set_x_inval_nr(struct sock *sk,
148 struct sk_buff *skb);
149int llc_conn_ev_rx_zzz_rsp_fbit_set_x_inval_nr(struct sock *sk,
150 struct sk_buff *skb);
151int llc_conn_ev_p_tmr_exp(struct sock *sk, struct sk_buff *skb);
152int llc_conn_ev_ack_tmr_exp(struct sock *sk, struct sk_buff *skb);
153int llc_conn_ev_rej_tmr_exp(struct sock *sk, struct sk_buff *skb);
154int llc_conn_ev_busy_tmr_exp(struct sock *sk, struct sk_buff *skb);
155/* NOT_USED functions and their variations */
156int llc_conn_ev_rx_xxx_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb);
157int llc_conn_ev_rx_xxx_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb);
158int llc_conn_ev_rx_i_cmd_pbit_set_0_unexpd_ns(struct sock *sk,
159 struct sk_buff *skb);
160int llc_conn_ev_rx_i_cmd_pbit_set_1_unexpd_ns(struct sock *sk,
161 struct sk_buff *skb);
162int llc_conn_ev_rx_i_cmd_pbit_set_0(struct sock *sk, struct sk_buff *skb);
163int llc_conn_ev_rx_i_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb);
164int llc_conn_ev_rx_i_rsp_fbit_set_0_unexpd_ns(struct sock *sk,
165 struct sk_buff *skb);
166int llc_conn_ev_rx_i_rsp_fbit_set_1_unexpd_ns(struct sock *sk,
167 struct sk_buff *skb);
168int llc_conn_ev_rx_i_rsp_fbit_set_0(struct sock *sk, struct sk_buff *skb);
169int llc_conn_ev_rx_i_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb);
170int llc_conn_ev_rx_rr_cmd_pbit_set_0(struct sock *sk, struct sk_buff *skb);
171int llc_conn_ev_rx_rr_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb);
172int llc_conn_ev_rx_rr_rsp_fbit_set_0(struct sock *sk, struct sk_buff *skb);
173int llc_conn_ev_rx_rr_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb);
174int llc_conn_ev_rx_rnr_cmd_pbit_set_0(struct sock *sk, struct sk_buff *skb);
175int llc_conn_ev_rx_rnr_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb);
176int llc_conn_ev_rx_rnr_rsp_fbit_set_0(struct sock *sk, struct sk_buff *skb);
177int llc_conn_ev_rx_rnr_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb);
178int llc_conn_ev_rx_rej_cmd_pbit_set_0(struct sock *sk, struct sk_buff *skb);
179int llc_conn_ev_rx_rej_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb);
180int llc_conn_ev_rx_rej_rsp_fbit_set_0(struct sock *sk, struct sk_buff *skb);
181int llc_conn_ev_rx_rej_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb);
182int llc_conn_ev_rx_any_frame(struct sock *sk, struct sk_buff *skb);
183int llc_conn_ev_tx_buffer_full(struct sock *sk, struct sk_buff *skb);
184int llc_conn_ev_init_p_f_cycle(struct sock *sk, struct sk_buff *skb);
185
186/* Available connection action qualifiers */
187int llc_conn_ev_qlfy_data_flag_eq_1(struct sock *sk, struct sk_buff *skb);
188int llc_conn_ev_qlfy_data_flag_eq_0(struct sock *sk, struct sk_buff *skb);
189int llc_conn_ev_qlfy_data_flag_eq_2(struct sock *sk, struct sk_buff *skb);
190int llc_conn_ev_qlfy_p_flag_eq_1(struct sock *sk, struct sk_buff *skb);
191int llc_conn_ev_qlfy_last_frame_eq_1(struct sock *sk, struct sk_buff *skb);
192int llc_conn_ev_qlfy_last_frame_eq_0(struct sock *sk, struct sk_buff *skb);
193int llc_conn_ev_qlfy_p_flag_eq_0(struct sock *sk, struct sk_buff *skb);
194int llc_conn_ev_qlfy_p_flag_eq_f(struct sock *sk, struct sk_buff *skb);
195int llc_conn_ev_qlfy_remote_busy_eq_0(struct sock *sk, struct sk_buff *skb);
196int llc_conn_ev_qlfy_remote_busy_eq_1(struct sock *sk, struct sk_buff *skb);
197int llc_conn_ev_qlfy_retry_cnt_lt_n2(struct sock *sk, struct sk_buff *skb);
198int llc_conn_ev_qlfy_retry_cnt_gte_n2(struct sock *sk, struct sk_buff *skb);
199int llc_conn_ev_qlfy_s_flag_eq_1(struct sock *sk, struct sk_buff *skb);
200int llc_conn_ev_qlfy_s_flag_eq_0(struct sock *sk, struct sk_buff *skb);
201int llc_conn_ev_qlfy_cause_flag_eq_1(struct sock *sk, struct sk_buff *skb);
202int llc_conn_ev_qlfy_cause_flag_eq_0(struct sock *sk, struct sk_buff *skb);
203int llc_conn_ev_qlfy_set_status_conn(struct sock *sk, struct sk_buff *skb);
204int llc_conn_ev_qlfy_set_status_disc(struct sock *sk, struct sk_buff *skb);
205int llc_conn_ev_qlfy_set_status_failed(struct sock *sk, struct sk_buff *skb);
206int llc_conn_ev_qlfy_set_status_remote_busy(struct sock *sk,
207 struct sk_buff *skb);
208int llc_conn_ev_qlfy_set_status_refuse(struct sock *sk, struct sk_buff *skb);
209int llc_conn_ev_qlfy_set_status_conflict(struct sock *sk, struct sk_buff *skb);
210int llc_conn_ev_qlfy_set_status_rst_done(struct sock *sk, struct sk_buff *skb);
211
212static __inline__ int llc_conn_space(struct sock *sk, struct sk_buff *skb)
213{
214 return atomic_read(&sk->sk_rmem_alloc) + skb->truesize <
215 (unsigned int)sk->sk_rcvbuf;
216}
217#endif /* LLC_C_EV_H */