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1da177e4 LT |
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 | ||
113 | struct 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 | ||
123 | static __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 | ||
128 | typedef int (*llc_conn_ev_t)(struct sock *sk, struct sk_buff *skb); | |
129 | typedef int (*llc_conn_ev_qfyr_t)(struct sock *sk, struct sk_buff *skb); | |
130 | ||
bf3c710f JP |
131 | int llc_conn_ev_conn_req(struct sock *sk, struct sk_buff *skb); |
132 | int llc_conn_ev_data_req(struct sock *sk, struct sk_buff *skb); | |
133 | int llc_conn_ev_disc_req(struct sock *sk, struct sk_buff *skb); | |
134 | int llc_conn_ev_rst_req(struct sock *sk, struct sk_buff *skb); | |
135 | int llc_conn_ev_local_busy_detected(struct sock *sk, struct sk_buff *skb); | |
136 | int llc_conn_ev_local_busy_cleared(struct sock *sk, struct sk_buff *skb); | |
137 | int llc_conn_ev_rx_bad_pdu(struct sock *sk, struct sk_buff *skb); | |
138 | int llc_conn_ev_rx_disc_cmd_pbit_set_x(struct sock *sk, struct sk_buff *skb); | |
139 | int llc_conn_ev_rx_dm_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb); | |
140 | int llc_conn_ev_rx_frmr_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb); | |
141 | int llc_conn_ev_rx_i_cmd_pbit_set_x_inval_ns(struct sock *sk, | |
142 | struct sk_buff *skb); | |
143 | int llc_conn_ev_rx_i_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb); | |
144 | int llc_conn_ev_rx_i_rsp_fbit_set_x_unexpd_ns(struct sock *sk, | |
1da177e4 | 145 | struct sk_buff *skb); |
bf3c710f JP |
146 | int llc_conn_ev_rx_i_rsp_fbit_set_x_inval_ns(struct sock *sk, |
147 | struct sk_buff *skb); | |
148 | int llc_conn_ev_rx_rej_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb); | |
149 | int llc_conn_ev_rx_sabme_cmd_pbit_set_x(struct sock *sk, struct sk_buff *skb); | |
150 | int llc_conn_ev_rx_ua_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb); | |
151 | int llc_conn_ev_rx_xxx_cmd_pbit_set_x(struct sock *sk, struct sk_buff *skb); | |
152 | int llc_conn_ev_rx_xxx_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb); | |
153 | int llc_conn_ev_rx_zzz_cmd_pbit_set_x_inval_nr(struct sock *sk, | |
1da177e4 | 154 | struct sk_buff *skb); |
bf3c710f JP |
155 | int llc_conn_ev_rx_zzz_rsp_fbit_set_x_inval_nr(struct sock *sk, |
156 | struct sk_buff *skb); | |
157 | int llc_conn_ev_p_tmr_exp(struct sock *sk, struct sk_buff *skb); | |
158 | int llc_conn_ev_ack_tmr_exp(struct sock *sk, struct sk_buff *skb); | |
159 | int llc_conn_ev_rej_tmr_exp(struct sock *sk, struct sk_buff *skb); | |
160 | int llc_conn_ev_busy_tmr_exp(struct sock *sk, struct sk_buff *skb); | |
161 | int llc_conn_ev_sendack_tmr_exp(struct sock *sk, struct sk_buff *skb); | |
1da177e4 | 162 | /* NOT_USED functions and their variations */ |
bf3c710f JP |
163 | int llc_conn_ev_rx_xxx_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb); |
164 | int llc_conn_ev_rx_xxx_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb); | |
165 | int llc_conn_ev_rx_i_cmd_pbit_set_0_unexpd_ns(struct sock *sk, | |
166 | struct sk_buff *skb); | |
167 | int llc_conn_ev_rx_i_cmd_pbit_set_1_unexpd_ns(struct sock *sk, | |
168 | struct sk_buff *skb); | |
169 | int llc_conn_ev_rx_i_cmd_pbit_set_0(struct sock *sk, struct sk_buff *skb); | |
170 | int llc_conn_ev_rx_i_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb); | |
171 | int llc_conn_ev_rx_i_rsp_fbit_set_0_unexpd_ns(struct sock *sk, | |
172 | struct sk_buff *skb); | |
173 | int llc_conn_ev_rx_i_rsp_fbit_set_1_unexpd_ns(struct sock *sk, | |
174 | struct sk_buff *skb); | |
175 | int llc_conn_ev_rx_i_rsp_fbit_set_0(struct sock *sk, struct sk_buff *skb); | |
176 | int llc_conn_ev_rx_i_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb); | |
177 | int llc_conn_ev_rx_rr_cmd_pbit_set_0(struct sock *sk, struct sk_buff *skb); | |
178 | int llc_conn_ev_rx_rr_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb); | |
179 | int llc_conn_ev_rx_rr_rsp_fbit_set_0(struct sock *sk, struct sk_buff *skb); | |
180 | int llc_conn_ev_rx_rr_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb); | |
181 | int llc_conn_ev_rx_rnr_cmd_pbit_set_0(struct sock *sk, struct sk_buff *skb); | |
182 | int llc_conn_ev_rx_rnr_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb); | |
183 | int llc_conn_ev_rx_rnr_rsp_fbit_set_0(struct sock *sk, struct sk_buff *skb); | |
184 | int llc_conn_ev_rx_rnr_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb); | |
185 | int llc_conn_ev_rx_rej_cmd_pbit_set_0(struct sock *sk, struct sk_buff *skb); | |
186 | int llc_conn_ev_rx_rej_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb); | |
187 | int llc_conn_ev_rx_rej_rsp_fbit_set_0(struct sock *sk, struct sk_buff *skb); | |
188 | int llc_conn_ev_rx_rej_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb); | |
189 | int llc_conn_ev_rx_any_frame(struct sock *sk, struct sk_buff *skb); | |
190 | int llc_conn_ev_tx_buffer_full(struct sock *sk, struct sk_buff *skb); | |
191 | int llc_conn_ev_init_p_f_cycle(struct sock *sk, struct sk_buff *skb); | |
1da177e4 LT |
192 | |
193 | /* Available connection action qualifiers */ | |
bf3c710f JP |
194 | int llc_conn_ev_qlfy_data_flag_eq_1(struct sock *sk, struct sk_buff *skb); |
195 | int llc_conn_ev_qlfy_data_flag_eq_0(struct sock *sk, struct sk_buff *skb); | |
196 | int llc_conn_ev_qlfy_data_flag_eq_2(struct sock *sk, struct sk_buff *skb); | |
197 | int llc_conn_ev_qlfy_p_flag_eq_1(struct sock *sk, struct sk_buff *skb); | |
198 | int llc_conn_ev_qlfy_last_frame_eq_1(struct sock *sk, struct sk_buff *skb); | |
199 | int llc_conn_ev_qlfy_last_frame_eq_0(struct sock *sk, struct sk_buff *skb); | |
200 | int llc_conn_ev_qlfy_p_flag_eq_0(struct sock *sk, struct sk_buff *skb); | |
201 | int llc_conn_ev_qlfy_p_flag_eq_f(struct sock *sk, struct sk_buff *skb); | |
202 | int llc_conn_ev_qlfy_remote_busy_eq_0(struct sock *sk, struct sk_buff *skb); | |
203 | int llc_conn_ev_qlfy_remote_busy_eq_1(struct sock *sk, struct sk_buff *skb); | |
204 | int llc_conn_ev_qlfy_retry_cnt_lt_n2(struct sock *sk, struct sk_buff *skb); | |
205 | int llc_conn_ev_qlfy_retry_cnt_gte_n2(struct sock *sk, struct sk_buff *skb); | |
206 | int llc_conn_ev_qlfy_s_flag_eq_1(struct sock *sk, struct sk_buff *skb); | |
207 | int llc_conn_ev_qlfy_s_flag_eq_0(struct sock *sk, struct sk_buff *skb); | |
208 | int llc_conn_ev_qlfy_cause_flag_eq_1(struct sock *sk, struct sk_buff *skb); | |
209 | int llc_conn_ev_qlfy_cause_flag_eq_0(struct sock *sk, struct sk_buff *skb); | |
210 | int llc_conn_ev_qlfy_set_status_conn(struct sock *sk, struct sk_buff *skb); | |
211 | int llc_conn_ev_qlfy_set_status_disc(struct sock *sk, struct sk_buff *skb); | |
212 | int llc_conn_ev_qlfy_set_status_failed(struct sock *sk, struct sk_buff *skb); | |
213 | int llc_conn_ev_qlfy_set_status_remote_busy(struct sock *sk, | |
1da177e4 | 214 | struct sk_buff *skb); |
bf3c710f JP |
215 | int llc_conn_ev_qlfy_set_status_refuse(struct sock *sk, struct sk_buff *skb); |
216 | int llc_conn_ev_qlfy_set_status_conflict(struct sock *sk, struct sk_buff *skb); | |
217 | int llc_conn_ev_qlfy_set_status_rst_done(struct sock *sk, struct sk_buff *skb); | |
1da177e4 LT |
218 | |
219 | static __inline__ int llc_conn_space(struct sock *sk, struct sk_buff *skb) | |
220 | { | |
221 | return atomic_read(&sk->sk_rmem_alloc) + skb->truesize < | |
95c96174 | 222 | (unsigned int)sk->sk_rcvbuf; |
1da177e4 LT |
223 | } |
224 | #endif /* LLC_C_EV_H */ |