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
llc_conn_ev(struct sk_buff * skb)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
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,
145 struct sk_buff *skb);
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,
154 struct sk_buff *skb);
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);
162 /* NOT_USED functions and their variations */
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);
192
193 /* Available connection action qualifiers */
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,
214 struct sk_buff *skb);
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);
218
llc_conn_space(struct sock * sk,struct sk_buff * skb)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 <
222 (unsigned int)sk->sk_rcvbuf;
223 }
224 #endif /* LLC_C_EV_H */
225