1#ifndef LLC_C_EV_H
2#define LLC_C_EV_H
3/*
4 * Copyright (c) 1997 by Procom Technology,Inc.
5 * 2001 by Arnaldo Carvalho de Melo <acme@conectiva.com.br>
6 *
7 * This program can be redistributed or modified under the terms of the
8 * GNU General Public License as published by the Free Software Foundation.
9 * This program is distributed without any warranty or implied warranty
10 * of merchantability or fitness for a particular purpose.
11 *
12 * See the GNU General Public License for more details.
13 */
14
15#include <net/sock.h>
16
17/* Connection component state transition event qualifiers */
18/* Types of events (possible values in 'ev->type') */
19#define LLC_CONN_EV_TYPE_SIMPLE 1
20#define LLC_CONN_EV_TYPE_CONDITION 2
21#define LLC_CONN_EV_TYPE_PRIM 3
22#define LLC_CONN_EV_TYPE_PDU 4 /* command/response PDU */
23#define LLC_CONN_EV_TYPE_ACK_TMR 5
24#define LLC_CONN_EV_TYPE_P_TMR 6
25#define LLC_CONN_EV_TYPE_REJ_TMR 7
26#define LLC_CONN_EV_TYPE_BUSY_TMR 8
27#define LLC_CONN_EV_TYPE_RPT_STATUS 9
28#define LLC_CONN_EV_TYPE_SENDACK_TMR 10
29
30#define NBR_CONN_EV 5
31/* Connection events which cause state transitions when fully qualified */
32
33#define LLC_CONN_EV_CONN_REQ 1
34#define LLC_CONN_EV_CONN_RESP 2
35#define LLC_CONN_EV_DATA_REQ 3
36#define LLC_CONN_EV_DISC_REQ 4
37#define LLC_CONN_EV_RESET_REQ 5
38#define LLC_CONN_EV_RESET_RESP 6
39#define LLC_CONN_EV_LOCAL_BUSY_DETECTED 7
40#define LLC_CONN_EV_LOCAL_BUSY_CLEARED 8
41#define LLC_CONN_EV_RX_BAD_PDU 9
42#define LLC_CONN_EV_RX_DISC_CMD_Pbit_SET_X 10
43#define LLC_CONN_EV_RX_DM_RSP_Fbit_SET_X 11
44#define LLC_CONN_EV_RX_FRMR_RSP_Fbit_SET_X 12
45#define LLC_CONN_EV_RX_I_CMD_Pbit_SET_X 13
46#define LLC_CONN_EV_RX_I_CMD_Pbit_SET_X_UNEXPD_Ns 14
47#define LLC_CONN_EV_RX_I_CMD_Pbit_SET_X_INVAL_Ns 15
48#define LLC_CONN_EV_RX_I_RSP_Fbit_SET_X 16
49#define LLC_CONN_EV_RX_I_RSP_Fbit_SET_X_UNEXPD_Ns 17
50#define LLC_CONN_EV_RX_I_RSP_Fbit_SET_X_INVAL_Ns 18
51#define LLC_CONN_EV_RX_REJ_CMD_Pbit_SET_X 19
52#define LLC_CONN_EV_RX_REJ_RSP_Fbit_SET_X 20
53#define LLC_CONN_EV_RX_RNR_CMD_Pbit_SET_X 21
54#define LLC_CONN_EV_RX_RNR_RSP_Fbit_SET_X 22
55#define LLC_CONN_EV_RX_RR_CMD_Pbit_SET_X 23
56#define LLC_CONN_EV_RX_RR_RSP_Fbit_SET_X 24
57#define LLC_CONN_EV_RX_SABME_CMD_Pbit_SET_X 25
58#define LLC_CONN_EV_RX_UA_RSP_Fbit_SET_X 26
59#define LLC_CONN_EV_RX_XXX_CMD_Pbit_SET_X 27
60#define LLC_CONN_EV_RX_XXX_RSP_Fbit_SET_X 28
61#define LLC_CONN_EV_RX_XXX_YYY 29
62#define LLC_CONN_EV_RX_ZZZ_CMD_Pbit_SET_X_INVAL_Nr 30
63#define LLC_CONN_EV_RX_ZZZ_RSP_Fbit_SET_X_INVAL_Nr 31
64#define LLC_CONN_EV_P_TMR_EXP 32
65#define LLC_CONN_EV_ACK_TMR_EXP 33
66#define LLC_CONN_EV_REJ_TMR_EXP 34
67#define LLC_CONN_EV_BUSY_TMR_EXP 35
68#define LLC_CONN_EV_RX_XXX_CMD_Pbit_SET_1 36
69#define LLC_CONN_EV_RX_XXX_CMD_Pbit_SET_0 37
70#define LLC_CONN_EV_RX_I_CMD_Pbit_SET_0_UNEXPD_Ns 38
71#define LLC_CONN_EV_RX_I_RSP_Fbit_SET_0_UNEXPD_Ns 39
72#define LLC_CONN_EV_RX_I_RSP_Fbit_SET_1_UNEXPD_Ns 40
73#define LLC_CONN_EV_RX_I_CMD_Pbit_SET_1_UNEXPD_Ns 41
74#define LLC_CONN_EV_RX_I_CMD_Pbit_SET_0 42
75#define LLC_CONN_EV_RX_I_RSP_Fbit_SET_0 43
76#define LLC_CONN_EV_RX_I_CMD_Pbit_SET_1 44
77#define LLC_CONN_EV_RX_RR_CMD_Pbit_SET_0 45
78#define LLC_CONN_EV_RX_RR_RSP_Fbit_SET_0 46
79#define LLC_CONN_EV_RX_RR_RSP_Fbit_SET_1 47
80#define LLC_CONN_EV_RX_RR_CMD_Pbit_SET_1 48
81#define LLC_CONN_EV_RX_RNR_CMD_Pbit_SET_0 49
82#define LLC_CONN_EV_RX_RNR_RSP_Fbit_SET_0 50
83#define LLC_CONN_EV_RX_RNR_RSP_Fbit_SET_1 51
84#define LLC_CONN_EV_RX_RNR_CMD_Pbit_SET_1 52
85#define LLC_CONN_EV_RX_REJ_CMD_Pbit_SET_0 53
86#define LLC_CONN_EV_RX_REJ_RSP_Fbit_SET_0 54
87#define LLC_CONN_EV_RX_REJ_CMD_Pbit_SET_1 55
88#define LLC_CONN_EV_RX_I_RSP_Fbit_SET_1 56
89#define LLC_CONN_EV_RX_REJ_RSP_Fbit_SET_1 57
90#define LLC_CONN_EV_RX_XXX_RSP_Fbit_SET_1 58
91#define LLC_CONN_EV_TX_BUFF_FULL 59
92
93#define LLC_CONN_EV_INIT_P_F_CYCLE 100
94/*
95 * Connection event qualifiers; for some events a certain combination of
96 * these qualifiers must be TRUE before event recognized valid for state;
97 * these constants act as indexes into the Event Qualifier function
98 * table
99 */
100#define LLC_CONN_EV_QFY_DATA_FLAG_EQ_1 1
101#define LLC_CONN_EV_QFY_DATA_FLAG_EQ_0 2
102#define LLC_CONN_EV_QFY_DATA_FLAG_EQ_2 3
103#define LLC_CONN_EV_QFY_P_FLAG_EQ_1 4
104#define LLC_CONN_EV_QFY_P_FLAG_EQ_0 5
105#define LLC_CONN_EV_QFY_P_FLAG_EQ_Fbit 6
106#define LLC_CONN_EV_QFY_REMOTE_BUSY_EQ_0 7
107#define LLC_CONN_EV_QFY_RETRY_CNT_LT_N2 8
108#define LLC_CONN_EV_QFY_RETRY_CNT_GTE_N2 9
109#define LLC_CONN_EV_QFY_S_FLAG_EQ_1 10
110#define LLC_CONN_EV_QFY_S_FLAG_EQ_0 11
111#define LLC_CONN_EV_QFY_INIT_P_F_CYCLE 12
112
113struct llc_conn_state_ev {
114 u8 type;
115 u8 prim;
116 u8 prim_type;
117 u8 reason;
118 u8 status;
119 u8 ind_prim;
120 u8 cfm_prim;
121};
122
123static __inline__ struct llc_conn_state_ev *llc_conn_ev(struct sk_buff *skb)
124{
125 return (struct llc_conn_state_ev *)skb->cb;
126}
127
128typedef int (*llc_conn_ev_t)(struct sock *sk, struct sk_buff *skb);
129typedef int (*llc_conn_ev_qfyr_t)(struct sock *sk, struct sk_buff *skb);
130
131int llc_conn_ev_conn_req(struct sock *sk, struct sk_buff *skb);
132int llc_conn_ev_data_req(struct sock *sk, struct sk_buff *skb);
133int llc_conn_ev_disc_req(struct sock *sk, struct sk_buff *skb);
134int llc_conn_ev_rst_req(struct sock *sk, struct sk_buff *skb);
135int llc_conn_ev_local_busy_detected(struct sock *sk, struct sk_buff *skb);
136int llc_conn_ev_local_busy_cleared(struct sock *sk, struct sk_buff *skb);
137int llc_conn_ev_rx_bad_pdu(struct sock *sk, struct sk_buff *skb);
138int llc_conn_ev_rx_disc_cmd_pbit_set_x(struct sock *sk, struct sk_buff *skb);
139int llc_conn_ev_rx_dm_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb);
140int llc_conn_ev_rx_frmr_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb);
141int llc_conn_ev_rx_i_cmd_pbit_set_x_inval_ns(struct sock *sk,
142 struct sk_buff *skb);
143int llc_conn_ev_rx_i_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb);
144int llc_conn_ev_rx_i_rsp_fbit_set_x_unexpd_ns(struct sock *sk,
145 struct sk_buff *skb);
146int llc_conn_ev_rx_i_rsp_fbit_set_x_inval_ns(struct sock *sk,
147 struct sk_buff *skb);
148int llc_conn_ev_rx_rej_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb);
149int llc_conn_ev_rx_sabme_cmd_pbit_set_x(struct sock *sk, struct sk_buff *skb);
150int llc_conn_ev_rx_ua_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb);
151int llc_conn_ev_rx_xxx_cmd_pbit_set_x(struct sock *sk, struct sk_buff *skb);
152int llc_conn_ev_rx_xxx_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb);
153int llc_conn_ev_rx_zzz_cmd_pbit_set_x_inval_nr(struct sock *sk,
154 struct sk_buff *skb);
155int llc_conn_ev_rx_zzz_rsp_fbit_set_x_inval_nr(struct sock *sk,
156 struct sk_buff *skb);
157int llc_conn_ev_p_tmr_exp(struct sock *sk, struct sk_buff *skb);
158int llc_conn_ev_ack_tmr_exp(struct sock *sk, struct sk_buff *skb);
159int llc_conn_ev_rej_tmr_exp(struct sock *sk, struct sk_buff *skb);
160int llc_conn_ev_busy_tmr_exp(struct sock *sk, struct sk_buff *skb);
161int llc_conn_ev_sendack_tmr_exp(struct sock *sk, struct sk_buff *skb);
162/* NOT_USED functions and their variations */
163int llc_conn_ev_rx_xxx_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb);
164int llc_conn_ev_rx_xxx_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb);
165int llc_conn_ev_rx_i_cmd_pbit_set_0_unexpd_ns(struct sock *sk,
166 struct sk_buff *skb);
167int llc_conn_ev_rx_i_cmd_pbit_set_1_unexpd_ns(struct sock *sk,
168 struct sk_buff *skb);
169int llc_conn_ev_rx_i_cmd_pbit_set_0(struct sock *sk, struct sk_buff *skb);
170int llc_conn_ev_rx_i_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb);
171int llc_conn_ev_rx_i_rsp_fbit_set_0_unexpd_ns(struct sock *sk,
172 struct sk_buff *skb);
173int llc_conn_ev_rx_i_rsp_fbit_set_1_unexpd_ns(struct sock *sk,
174 struct sk_buff *skb);
175int llc_conn_ev_rx_i_rsp_fbit_set_0(struct sock *sk, struct sk_buff *skb);
176int llc_conn_ev_rx_i_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb);
177int llc_conn_ev_rx_rr_cmd_pbit_set_0(struct sock *sk, struct sk_buff *skb);
178int llc_conn_ev_rx_rr_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb);
179int llc_conn_ev_rx_rr_rsp_fbit_set_0(struct sock *sk, struct sk_buff *skb);
180int llc_conn_ev_rx_rr_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb);
181int llc_conn_ev_rx_rnr_cmd_pbit_set_0(struct sock *sk, struct sk_buff *skb);
182int llc_conn_ev_rx_rnr_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb);
183int llc_conn_ev_rx_rnr_rsp_fbit_set_0(struct sock *sk, struct sk_buff *skb);
184int llc_conn_ev_rx_rnr_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb);
185int llc_conn_ev_rx_rej_cmd_pbit_set_0(struct sock *sk, struct sk_buff *skb);
186int llc_conn_ev_rx_rej_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb);
187int llc_conn_ev_rx_rej_rsp_fbit_set_0(struct sock *sk, struct sk_buff *skb);
188int llc_conn_ev_rx_rej_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb);
189int llc_conn_ev_rx_any_frame(struct sock *sk, struct sk_buff *skb);
190int llc_conn_ev_tx_buffer_full(struct sock *sk, struct sk_buff *skb);
191int llc_conn_ev_init_p_f_cycle(struct sock *sk, struct sk_buff *skb);
192
193/* Available connection action qualifiers */
194int llc_conn_ev_qlfy_data_flag_eq_1(struct sock *sk, struct sk_buff *skb);
195int llc_conn_ev_qlfy_data_flag_eq_0(struct sock *sk, struct sk_buff *skb);
196int llc_conn_ev_qlfy_data_flag_eq_2(struct sock *sk, struct sk_buff *skb);
197int llc_conn_ev_qlfy_p_flag_eq_1(struct sock *sk, struct sk_buff *skb);
198int llc_conn_ev_qlfy_last_frame_eq_1(struct sock *sk, struct sk_buff *skb);
199int llc_conn_ev_qlfy_last_frame_eq_0(struct sock *sk, struct sk_buff *skb);
200int llc_conn_ev_qlfy_p_flag_eq_0(struct sock *sk, struct sk_buff *skb);
201int llc_conn_ev_qlfy_p_flag_eq_f(struct sock *sk, struct sk_buff *skb);
202int llc_conn_ev_qlfy_remote_busy_eq_0(struct sock *sk, struct sk_buff *skb);
203int llc_conn_ev_qlfy_remote_busy_eq_1(struct sock *sk, struct sk_buff *skb);
204int llc_conn_ev_qlfy_retry_cnt_lt_n2(struct sock *sk, struct sk_buff *skb);
205int llc_conn_ev_qlfy_retry_cnt_gte_n2(struct sock *sk, struct sk_buff *skb);
206int llc_conn_ev_qlfy_s_flag_eq_1(struct sock *sk, struct sk_buff *skb);
207int llc_conn_ev_qlfy_s_flag_eq_0(struct sock *sk, struct sk_buff *skb);
208int llc_conn_ev_qlfy_cause_flag_eq_1(struct sock *sk, struct sk_buff *skb);
209int llc_conn_ev_qlfy_cause_flag_eq_0(struct sock *sk, struct sk_buff *skb);
210int llc_conn_ev_qlfy_set_status_conn(struct sock *sk, struct sk_buff *skb);
211int llc_conn_ev_qlfy_set_status_disc(struct sock *sk, struct sk_buff *skb);
212int llc_conn_ev_qlfy_set_status_failed(struct sock *sk, struct sk_buff *skb);
213int llc_conn_ev_qlfy_set_status_remote_busy(struct sock *sk,
214 struct sk_buff *skb);
215int llc_conn_ev_qlfy_set_status_refuse(struct sock *sk, struct sk_buff *skb);
216int llc_conn_ev_qlfy_set_status_conflict(struct sock *sk, struct sk_buff *skb);
217int llc_conn_ev_qlfy_set_status_rst_done(struct sock *sk, struct sk_buff *skb);
218
219static __inline__ int llc_conn_space(struct sock *sk, struct sk_buff *skb)
220{
221 return atomic_read(&sk->sk_rmem_alloc) + skb->truesize <
222 (unsigned int)sk->sk_rcvbuf;
223}
224#endif /* LLC_C_EV_H */
225