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