1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef LLC_C_EV_H 3 #define LLC_C_EV_H 4 /* 5 * Copyright (c) 1997 by Procom Technology,Inc. 6 * 2001 by Arnaldo Carvalho de Melo <acme@conectiva.com.br> 7 */ 8 9 #include <net/sock.h> 10 11 /* Connection component state transition event qualifiers */ 12 /* Types of events (possible values in 'ev->type') */ 13 #define LLC_CONN_EV_TYPE_SIMPLE 1 14 #define LLC_CONN_EV_TYPE_CONDITION 2 15 #define LLC_CONN_EV_TYPE_PRIM 3 16 #define LLC_CONN_EV_TYPE_PDU 4 /* command/response PDU */ 17 #define LLC_CONN_EV_TYPE_ACK_TMR 5 18 #define LLC_CONN_EV_TYPE_P_TMR 6 19 #define LLC_CONN_EV_TYPE_REJ_TMR 7 20 #define LLC_CONN_EV_TYPE_BUSY_TMR 8 21 #define LLC_CONN_EV_TYPE_RPT_STATUS 9 22 #define LLC_CONN_EV_TYPE_SENDACK_TMR 10 23 24 #define NBR_CONN_EV 5 25 /* Connection events which cause state transitions when fully qualified */ 26 27 #define LLC_CONN_EV_CONN_REQ 1 28 #define LLC_CONN_EV_CONN_RESP 2 29 #define LLC_CONN_EV_DATA_REQ 3 30 #define LLC_CONN_EV_DISC_REQ 4 31 #define LLC_CONN_EV_RESET_REQ 5 32 #define LLC_CONN_EV_RESET_RESP 6 33 #define LLC_CONN_EV_LOCAL_BUSY_DETECTED 7 34 #define LLC_CONN_EV_LOCAL_BUSY_CLEARED 8 35 #define LLC_CONN_EV_RX_BAD_PDU 9 36 #define LLC_CONN_EV_RX_DISC_CMD_Pbit_SET_X 10 37 #define LLC_CONN_EV_RX_DM_RSP_Fbit_SET_X 11 38 #define LLC_CONN_EV_RX_FRMR_RSP_Fbit_SET_X 12 39 #define LLC_CONN_EV_RX_I_CMD_Pbit_SET_X 13 40 #define LLC_CONN_EV_RX_I_CMD_Pbit_SET_X_UNEXPD_Ns 14 41 #define LLC_CONN_EV_RX_I_CMD_Pbit_SET_X_INVAL_Ns 15 42 #define LLC_CONN_EV_RX_I_RSP_Fbit_SET_X 16 43 #define LLC_CONN_EV_RX_I_RSP_Fbit_SET_X_UNEXPD_Ns 17 44 #define LLC_CONN_EV_RX_I_RSP_Fbit_SET_X_INVAL_Ns 18 45 #define LLC_CONN_EV_RX_REJ_CMD_Pbit_SET_X 19 46 #define LLC_CONN_EV_RX_REJ_RSP_Fbit_SET_X 20 47 #define LLC_CONN_EV_RX_RNR_CMD_Pbit_SET_X 21 48 #define LLC_CONN_EV_RX_RNR_RSP_Fbit_SET_X 22 49 #define LLC_CONN_EV_RX_RR_CMD_Pbit_SET_X 23 50 #define LLC_CONN_EV_RX_RR_RSP_Fbit_SET_X 24 51 #define LLC_CONN_EV_RX_SABME_CMD_Pbit_SET_X 25 52 #define LLC_CONN_EV_RX_UA_RSP_Fbit_SET_X 26 53 #define LLC_CONN_EV_RX_XXX_CMD_Pbit_SET_X 27 54 #define LLC_CONN_EV_RX_XXX_RSP_Fbit_SET_X 28 55 #define LLC_CONN_EV_RX_XXX_YYY 29 56 #define LLC_CONN_EV_RX_ZZZ_CMD_Pbit_SET_X_INVAL_Nr 30 57 #define LLC_CONN_EV_RX_ZZZ_RSP_Fbit_SET_X_INVAL_Nr 31 58 #define LLC_CONN_EV_P_TMR_EXP 32 59 #define LLC_CONN_EV_ACK_TMR_EXP 33 60 #define LLC_CONN_EV_REJ_TMR_EXP 34 61 #define LLC_CONN_EV_BUSY_TMR_EXP 35 62 #define LLC_CONN_EV_RX_XXX_CMD_Pbit_SET_1 36 63 #define LLC_CONN_EV_RX_XXX_CMD_Pbit_SET_0 37 64 #define LLC_CONN_EV_RX_I_CMD_Pbit_SET_0_UNEXPD_Ns 38 65 #define LLC_CONN_EV_RX_I_RSP_Fbit_SET_0_UNEXPD_Ns 39 66 #define LLC_CONN_EV_RX_I_RSP_Fbit_SET_1_UNEXPD_Ns 40 67 #define LLC_CONN_EV_RX_I_CMD_Pbit_SET_1_UNEXPD_Ns 41 68 #define LLC_CONN_EV_RX_I_CMD_Pbit_SET_0 42 69 #define LLC_CONN_EV_RX_I_RSP_Fbit_SET_0 43 70 #define LLC_CONN_EV_RX_I_CMD_Pbit_SET_1 44 71 #define LLC_CONN_EV_RX_RR_CMD_Pbit_SET_0 45 72 #define LLC_CONN_EV_RX_RR_RSP_Fbit_SET_0 46 73 #define LLC_CONN_EV_RX_RR_RSP_Fbit_SET_1 47 74 #define LLC_CONN_EV_RX_RR_CMD_Pbit_SET_1 48 75 #define LLC_CONN_EV_RX_RNR_CMD_Pbit_SET_0 49 76 #define LLC_CONN_EV_RX_RNR_RSP_Fbit_SET_0 50 77 #define LLC_CONN_EV_RX_RNR_RSP_Fbit_SET_1 51 78 #define LLC_CONN_EV_RX_RNR_CMD_Pbit_SET_1 52 79 #define LLC_CONN_EV_RX_REJ_CMD_Pbit_SET_0 53 80 #define LLC_CONN_EV_RX_REJ_RSP_Fbit_SET_0 54 81 #define LLC_CONN_EV_RX_REJ_CMD_Pbit_SET_1 55 82 #define LLC_CONN_EV_RX_I_RSP_Fbit_SET_1 56 83 #define LLC_CONN_EV_RX_REJ_RSP_Fbit_SET_1 57 84 #define LLC_CONN_EV_RX_XXX_RSP_Fbit_SET_1 58 85 #define LLC_CONN_EV_TX_BUFF_FULL 59 86 87 #define LLC_CONN_EV_INIT_P_F_CYCLE 100 88 /* 89 * Connection event qualifiers; for some events a certain combination of 90 * these qualifiers must be TRUE before event recognized valid for state; 91 * these constants act as indexes into the Event Qualifier function 92 * table 93 */ 94 #define LLC_CONN_EV_QFY_DATA_FLAG_EQ_1 1 95 #define LLC_CONN_EV_QFY_DATA_FLAG_EQ_0 2 96 #define LLC_CONN_EV_QFY_DATA_FLAG_EQ_2 3 97 #define LLC_CONN_EV_QFY_P_FLAG_EQ_1 4 98 #define LLC_CONN_EV_QFY_P_FLAG_EQ_0 5 99 #define LLC_CONN_EV_QFY_P_FLAG_EQ_Fbit 6 100 #define LLC_CONN_EV_QFY_REMOTE_BUSY_EQ_0 7 101 #define LLC_CONN_EV_QFY_RETRY_CNT_LT_N2 8 102 #define LLC_CONN_EV_QFY_RETRY_CNT_GTE_N2 9 103 #define LLC_CONN_EV_QFY_S_FLAG_EQ_1 10 104 #define LLC_CONN_EV_QFY_S_FLAG_EQ_0 11 105 #define LLC_CONN_EV_QFY_INIT_P_F_CYCLE 12 106 107 struct llc_conn_state_ev { 108 u8 type; 109 u8 prim; 110 u8 prim_type; 111 u8 reason; 112 u8 status; 113 u8 ind_prim; 114 u8 cfm_prim; 115 }; 116 117 static __inline__ struct llc_conn_state_ev *llc_conn_ev(struct sk_buff *skb) 118 { 119 return (struct llc_conn_state_ev *)skb->cb; 120 } 121 122 typedef int (*llc_conn_ev_t)(struct sock *sk, struct sk_buff *skb); 123 typedef int (*llc_conn_ev_qfyr_t)(struct sock *sk, struct sk_buff *skb); 124 125 int llc_conn_ev_conn_req(struct sock *sk, struct sk_buff *skb); 126 int llc_conn_ev_data_req(struct sock *sk, struct sk_buff *skb); 127 int llc_conn_ev_disc_req(struct sock *sk, struct sk_buff *skb); 128 int llc_conn_ev_rst_req(struct sock *sk, struct sk_buff *skb); 129 int llc_conn_ev_local_busy_detected(struct sock *sk, struct sk_buff *skb); 130 int llc_conn_ev_local_busy_cleared(struct sock *sk, struct sk_buff *skb); 131 int llc_conn_ev_rx_bad_pdu(struct sock *sk, struct sk_buff *skb); 132 int llc_conn_ev_rx_disc_cmd_pbit_set_x(struct sock *sk, struct sk_buff *skb); 133 int llc_conn_ev_rx_dm_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb); 134 int llc_conn_ev_rx_frmr_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb); 135 int llc_conn_ev_rx_i_cmd_pbit_set_x_inval_ns(struct sock *sk, 136 struct sk_buff *skb); 137 int llc_conn_ev_rx_i_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb); 138 int llc_conn_ev_rx_i_rsp_fbit_set_x_unexpd_ns(struct sock *sk, 139 struct sk_buff *skb); 140 int llc_conn_ev_rx_i_rsp_fbit_set_x_inval_ns(struct sock *sk, 141 struct sk_buff *skb); 142 int llc_conn_ev_rx_rej_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb); 143 int llc_conn_ev_rx_sabme_cmd_pbit_set_x(struct sock *sk, struct sk_buff *skb); 144 int llc_conn_ev_rx_ua_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb); 145 int llc_conn_ev_rx_xxx_cmd_pbit_set_x(struct sock *sk, struct sk_buff *skb); 146 int llc_conn_ev_rx_xxx_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb); 147 int llc_conn_ev_rx_zzz_cmd_pbit_set_x_inval_nr(struct sock *sk, 148 struct sk_buff *skb); 149 int llc_conn_ev_rx_zzz_rsp_fbit_set_x_inval_nr(struct sock *sk, 150 struct sk_buff *skb); 151 int llc_conn_ev_p_tmr_exp(struct sock *sk, struct sk_buff *skb); 152 int llc_conn_ev_ack_tmr_exp(struct sock *sk, struct sk_buff *skb); 153 int llc_conn_ev_rej_tmr_exp(struct sock *sk, struct sk_buff *skb); 154 int llc_conn_ev_busy_tmr_exp(struct sock *sk, struct sk_buff *skb); 155 /* NOT_USED functions and their variations */ 156 int llc_conn_ev_rx_xxx_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb); 157 int llc_conn_ev_rx_xxx_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb); 158 int llc_conn_ev_rx_i_cmd_pbit_set_0_unexpd_ns(struct sock *sk, 159 struct sk_buff *skb); 160 int llc_conn_ev_rx_i_cmd_pbit_set_1_unexpd_ns(struct sock *sk, 161 struct sk_buff *skb); 162 int llc_conn_ev_rx_i_cmd_pbit_set_0(struct sock *sk, struct sk_buff *skb); 163 int llc_conn_ev_rx_i_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb); 164 int llc_conn_ev_rx_i_rsp_fbit_set_0_unexpd_ns(struct sock *sk, 165 struct sk_buff *skb); 166 int llc_conn_ev_rx_i_rsp_fbit_set_1_unexpd_ns(struct sock *sk, 167 struct sk_buff *skb); 168 int llc_conn_ev_rx_i_rsp_fbit_set_0(struct sock *sk, struct sk_buff *skb); 169 int llc_conn_ev_rx_i_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb); 170 int llc_conn_ev_rx_rr_cmd_pbit_set_0(struct sock *sk, struct sk_buff *skb); 171 int llc_conn_ev_rx_rr_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb); 172 int llc_conn_ev_rx_rr_rsp_fbit_set_0(struct sock *sk, struct sk_buff *skb); 173 int llc_conn_ev_rx_rr_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb); 174 int llc_conn_ev_rx_rnr_cmd_pbit_set_0(struct sock *sk, struct sk_buff *skb); 175 int llc_conn_ev_rx_rnr_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb); 176 int llc_conn_ev_rx_rnr_rsp_fbit_set_0(struct sock *sk, struct sk_buff *skb); 177 int llc_conn_ev_rx_rnr_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb); 178 int llc_conn_ev_rx_rej_cmd_pbit_set_0(struct sock *sk, struct sk_buff *skb); 179 int llc_conn_ev_rx_rej_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb); 180 int llc_conn_ev_rx_rej_rsp_fbit_set_0(struct sock *sk, struct sk_buff *skb); 181 int llc_conn_ev_rx_rej_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb); 182 int llc_conn_ev_rx_any_frame(struct sock *sk, struct sk_buff *skb); 183 int llc_conn_ev_tx_buffer_full(struct sock *sk, struct sk_buff *skb); 184 int llc_conn_ev_init_p_f_cycle(struct sock *sk, struct sk_buff *skb); 185 186 /* Available connection action qualifiers */ 187 int llc_conn_ev_qlfy_data_flag_eq_1(struct sock *sk, struct sk_buff *skb); 188 int llc_conn_ev_qlfy_data_flag_eq_0(struct sock *sk, struct sk_buff *skb); 189 int llc_conn_ev_qlfy_data_flag_eq_2(struct sock *sk, struct sk_buff *skb); 190 int llc_conn_ev_qlfy_p_flag_eq_1(struct sock *sk, struct sk_buff *skb); 191 int llc_conn_ev_qlfy_last_frame_eq_1(struct sock *sk, struct sk_buff *skb); 192 int llc_conn_ev_qlfy_last_frame_eq_0(struct sock *sk, struct sk_buff *skb); 193 int llc_conn_ev_qlfy_p_flag_eq_0(struct sock *sk, struct sk_buff *skb); 194 int llc_conn_ev_qlfy_p_flag_eq_f(struct sock *sk, struct sk_buff *skb); 195 int llc_conn_ev_qlfy_remote_busy_eq_0(struct sock *sk, struct sk_buff *skb); 196 int llc_conn_ev_qlfy_remote_busy_eq_1(struct sock *sk, struct sk_buff *skb); 197 int llc_conn_ev_qlfy_retry_cnt_lt_n2(struct sock *sk, struct sk_buff *skb); 198 int llc_conn_ev_qlfy_retry_cnt_gte_n2(struct sock *sk, struct sk_buff *skb); 199 int llc_conn_ev_qlfy_s_flag_eq_1(struct sock *sk, struct sk_buff *skb); 200 int llc_conn_ev_qlfy_s_flag_eq_0(struct sock *sk, struct sk_buff *skb); 201 int llc_conn_ev_qlfy_cause_flag_eq_1(struct sock *sk, struct sk_buff *skb); 202 int llc_conn_ev_qlfy_cause_flag_eq_0(struct sock *sk, struct sk_buff *skb); 203 int llc_conn_ev_qlfy_set_status_conn(struct sock *sk, struct sk_buff *skb); 204 int llc_conn_ev_qlfy_set_status_disc(struct sock *sk, struct sk_buff *skb); 205 int llc_conn_ev_qlfy_set_status_failed(struct sock *sk, struct sk_buff *skb); 206 int llc_conn_ev_qlfy_set_status_remote_busy(struct sock *sk, 207 struct sk_buff *skb); 208 int llc_conn_ev_qlfy_set_status_refuse(struct sock *sk, struct sk_buff *skb); 209 int llc_conn_ev_qlfy_set_status_conflict(struct sock *sk, struct sk_buff *skb); 210 int llc_conn_ev_qlfy_set_status_rst_done(struct sock *sk, struct sk_buff *skb); 211 212 static __inline__ int llc_conn_space(struct sock *sk, struct sk_buff *skb) 213 { 214 return atomic_read(&sk->sk_rmem_alloc) + skb->truesize < 215 (unsigned int)sk->sk_rcvbuf; 216 } 217 #endif /* LLC_C_EV_H */ 218