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); 130 131 extern int llc_conn_ev_conn_req(struct sock *sk, struct sk_buff *skb); 132 extern int llc_conn_ev_data_req(struct sock *sk, struct sk_buff *skb); 133 extern int llc_conn_ev_disc_req(struct sock *sk, struct sk_buff *skb); 134 extern int llc_conn_ev_rst_req(struct sock *sk, struct sk_buff *skb); 135 extern int llc_conn_ev_local_busy_detected(struct sock *sk, 136 struct sk_buff *skb); 137 extern int llc_conn_ev_local_busy_cleared(struct sock *sk, struct sk_buff *skb); 138 extern int llc_conn_ev_rx_bad_pdu(struct sock *sk, struct sk_buff *skb); 139 extern int llc_conn_ev_rx_disc_cmd_pbit_set_x(struct sock *sk, 140 struct sk_buff *skb); 141 extern int llc_conn_ev_rx_dm_rsp_fbit_set_x(struct sock *sk, 142 struct sk_buff *skb); 143 extern int llc_conn_ev_rx_frmr_rsp_fbit_set_x(struct sock *sk, 144 struct sk_buff *skb); 145 extern int llc_conn_ev_rx_i_cmd_pbit_set_x_inval_ns(struct sock *sk, 146 struct sk_buff *skb); 147 extern int llc_conn_ev_rx_i_rsp_fbit_set_x(struct sock *sk, 148 struct sk_buff *skb); 149 extern int llc_conn_ev_rx_i_rsp_fbit_set_x_unexpd_ns(struct sock *sk, 150 struct sk_buff *skb); 151 extern int llc_conn_ev_rx_i_rsp_fbit_set_x_inval_ns(struct sock *sk, 152 struct sk_buff *skb); 153 extern int llc_conn_ev_rx_rej_rsp_fbit_set_x(struct sock *sk, 154 struct sk_buff *skb); 155 extern int llc_conn_ev_rx_sabme_cmd_pbit_set_x(struct sock *sk, 156 struct sk_buff *skb); 157 extern int llc_conn_ev_rx_ua_rsp_fbit_set_x(struct sock *sk, 158 struct sk_buff *skb); 159 extern int llc_conn_ev_rx_xxx_cmd_pbit_set_x(struct sock *sk, 160 struct sk_buff *skb); 161 extern int llc_conn_ev_rx_xxx_rsp_fbit_set_x(struct sock *sk, 162 struct sk_buff *skb); 163 extern int llc_conn_ev_rx_zzz_cmd_pbit_set_x_inval_nr(struct sock *sk, 164 struct sk_buff *skb); 165 extern int llc_conn_ev_rx_zzz_rsp_fbit_set_x_inval_nr(struct sock *sk, 166 struct sk_buff *skb); 167 extern int llc_conn_ev_p_tmr_exp(struct sock *sk, struct sk_buff *skb); 168 extern int llc_conn_ev_ack_tmr_exp(struct sock *sk, struct sk_buff *skb); 169 extern int llc_conn_ev_rej_tmr_exp(struct sock *sk, struct sk_buff *skb); 170 extern int llc_conn_ev_busy_tmr_exp(struct sock *sk, struct sk_buff *skb); 171 extern int llc_conn_ev_sendack_tmr_exp(struct sock *sk, struct sk_buff *skb); 172 /* NOT_USED functions and their variations */ 173 extern int llc_conn_ev_rx_xxx_cmd_pbit_set_1(struct sock *sk, 174 struct sk_buff *skb); 175 extern int llc_conn_ev_rx_xxx_rsp_fbit_set_1(struct sock *sk, 176 struct sk_buff *skb); 177 extern int llc_conn_ev_rx_i_cmd_pbit_set_0_unexpd_ns(struct sock *sk, 178 struct sk_buff *skb); 179 extern int llc_conn_ev_rx_i_cmd_pbit_set_1_unexpd_ns(struct sock *sk, 180 struct sk_buff *skb); 181 extern int llc_conn_ev_rx_i_cmd_pbit_set_0(struct sock *sk, 182 struct sk_buff *skb); 183 extern int llc_conn_ev_rx_i_cmd_pbit_set_1(struct sock *sk, 184 struct sk_buff *skb); 185 extern int llc_conn_ev_rx_i_rsp_fbit_set_0_unexpd_ns(struct sock *sk, 186 struct sk_buff *skb); 187 extern int llc_conn_ev_rx_i_rsp_fbit_set_1_unexpd_ns(struct sock *sk, 188 struct sk_buff *skb); 189 extern int llc_conn_ev_rx_i_rsp_fbit_set_0(struct sock *sk, 190 struct sk_buff *skb); 191 extern int llc_conn_ev_rx_i_rsp_fbit_set_1(struct sock *sk, 192 struct sk_buff *skb); 193 extern int llc_conn_ev_rx_rr_cmd_pbit_set_0(struct sock *sk, 194 struct sk_buff *skb); 195 extern int llc_conn_ev_rx_rr_cmd_pbit_set_1(struct sock *sk, 196 struct sk_buff *skb); 197 extern int llc_conn_ev_rx_rr_rsp_fbit_set_0(struct sock *sk, 198 struct sk_buff *skb); 199 extern int llc_conn_ev_rx_rr_rsp_fbit_set_1(struct sock *sk, 200 struct sk_buff *skb); 201 extern int llc_conn_ev_rx_rnr_cmd_pbit_set_0(struct sock *sk, 202 struct sk_buff *skb); 203 extern int llc_conn_ev_rx_rnr_cmd_pbit_set_1(struct sock *sk, 204 struct sk_buff *skb); 205 extern int llc_conn_ev_rx_rnr_rsp_fbit_set_0(struct sock *sk, 206 struct sk_buff *skb); 207 extern int llc_conn_ev_rx_rnr_rsp_fbit_set_1(struct sock *sk, 208 struct sk_buff *skb); 209 extern int llc_conn_ev_rx_rej_cmd_pbit_set_0(struct sock *sk, 210 struct sk_buff *skb); 211 extern int llc_conn_ev_rx_rej_cmd_pbit_set_1(struct sock *sk, 212 struct sk_buff *skb); 213 extern int llc_conn_ev_rx_rej_rsp_fbit_set_0(struct sock *sk, 214 struct sk_buff *skb); 215 extern int llc_conn_ev_rx_rej_rsp_fbit_set_1(struct sock *sk, 216 struct sk_buff *skb); 217 extern int llc_conn_ev_rx_any_frame(struct sock *sk, struct sk_buff *skb); 218 extern int llc_conn_ev_tx_buffer_full(struct sock *sk, struct sk_buff *skb); 219 extern int llc_conn_ev_init_p_f_cycle(struct sock *sk, struct sk_buff *skb); 220 221 /* Available connection action qualifiers */ 222 extern int llc_conn_ev_qlfy_data_flag_eq_1(struct sock *sk, 223 struct sk_buff *skb); 224 extern int llc_conn_ev_qlfy_data_flag_eq_0(struct sock *sk, 225 struct sk_buff *skb); 226 extern int llc_conn_ev_qlfy_data_flag_eq_2(struct sock *sk, 227 struct sk_buff *skb); 228 extern int llc_conn_ev_qlfy_p_flag_eq_1(struct sock *sk, struct sk_buff *skb); 229 extern int llc_conn_ev_qlfy_last_frame_eq_1(struct sock *sk, 230 struct sk_buff *skb); 231 extern int llc_conn_ev_qlfy_last_frame_eq_0(struct sock *sk, 232 struct sk_buff *skb); 233 extern int llc_conn_ev_qlfy_p_flag_eq_0(struct sock *sk, struct sk_buff *skb); 234 extern int llc_conn_ev_qlfy_p_flag_eq_f(struct sock *sk, struct sk_buff *skb); 235 extern int llc_conn_ev_qlfy_remote_busy_eq_0(struct sock *sk, 236 struct sk_buff *skb); 237 extern int llc_conn_ev_qlfy_remote_busy_eq_1(struct sock *sk, 238 struct sk_buff *skb); 239 extern int llc_conn_ev_qlfy_retry_cnt_lt_n2(struct sock *sk, 240 struct sk_buff *skb); 241 extern int llc_conn_ev_qlfy_retry_cnt_gte_n2(struct sock *sk, 242 struct sk_buff *skb); 243 extern int llc_conn_ev_qlfy_s_flag_eq_1(struct sock *sk, struct sk_buff *skb); 244 extern int llc_conn_ev_qlfy_s_flag_eq_0(struct sock *sk, struct sk_buff *skb); 245 extern int llc_conn_ev_qlfy_cause_flag_eq_1(struct sock *sk, 246 struct sk_buff *skb); 247 extern int llc_conn_ev_qlfy_cause_flag_eq_0(struct sock *sk, 248 struct sk_buff *skb); 249 extern int llc_conn_ev_qlfy_set_status_conn(struct sock *sk, 250 struct sk_buff *skb); 251 extern int llc_conn_ev_qlfy_set_status_disc(struct sock *sk, 252 struct sk_buff *skb); 253 extern int llc_conn_ev_qlfy_set_status_failed(struct sock *sk, 254 struct sk_buff *skb); 255 extern int llc_conn_ev_qlfy_set_status_remote_busy(struct sock *sk, 256 struct sk_buff *skb); 257 extern int llc_conn_ev_qlfy_set_status_refuse(struct sock *sk, 258 struct sk_buff *skb); 259 extern int llc_conn_ev_qlfy_set_status_conflict(struct sock *sk, 260 struct sk_buff *skb); 261 extern int llc_conn_ev_qlfy_set_status_rst_done(struct sock *sk, 262 struct sk_buff *skb); 263 264 static __inline__ int llc_conn_space(struct sock *sk, struct sk_buff *skb) 265 { 266 return atomic_read(&sk->sk_rmem_alloc) + skb->truesize < 267 (unsigned)sk->sk_rcvbuf; 268 } 269 #endif /* LLC_C_EV_H */ 270