1#ifndef LLC_C_EV_H
   2#define LLC_C_EV_H
   4 * Copyright (c) 1997 by Procom Technology,Inc.
   5 *               2001 by Arnaldo Carvalho de Melo <>
   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 */
  15#include <net/sock.h>
  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
  30#define NBR_CONN_EV                5
  31/* Connection events which cause state transitions when fully qualified */
  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
  93#define LLC_CONN_EV_INIT_P_F_CYCLE                      100
  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
 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;
 123static __inline__ struct llc_conn_state_ev *llc_conn_ev(struct sk_buff *skb)
 125        return (struct llc_conn_state_ev *)skb->cb;
 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);
 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);
 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);
 264static __inline__ int llc_conn_space(struct sock *sk, struct sk_buff *skb)
 266        return atomic_read(&sk->sk_rmem_alloc) + skb->truesize <
 267               (unsigned int)sk->sk_rcvbuf;
 269#endif /* LLC_C_EV_H */
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