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net
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llc_c_ev.h

llc_c_ev.h 11 KB
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  1. #ifndef LLC_C_EV_H
    2. 

  2. #define LLC_C_EV_H
    3. 

  3. /*
    4. 

  4.  * Copyright (c) 1997 by Procom Technology,Inc.
    5. 

  5.  *		 2001 by Arnaldo Carvalho de Melo <acme@conectiva.com.br>
    6. 

  6.  *
    7. 

  7.  * This program can be redistributed or modified under the terms of the
    8. 

  8.  * GNU General Public License as published by the Free Software Foundation.
    9. 

  9.  * This program is distributed without any warranty or implied warranty
    10. 

  10.  * of merchantability or fitness for a particular purpose.
    11. 

  11.  *
    12. 

  12.  * See the GNU General Public License for more details.
    13. 

  13.  */
    14. 

  14. 

  15. #include <net/sock.h>
    16. 

  16. 

  17. /* Connection component state transition event qualifiers */
    18. 

  18. /* Types of events (possible values in 'ev->type') */
    19. 

  19. #define LLC_CONN_EV_TYPE_SIMPLE		 1
    20. 

  20. #define LLC_CONN_EV_TYPE_CONDITION	 2
    21. 

  21. #define LLC_CONN_EV_TYPE_PRIM		 3
    22. 

  22. #define LLC_CONN_EV_TYPE_PDU		 4	/* command/response PDU */
    23. 

  23. #define LLC_CONN_EV_TYPE_ACK_TMR	 5
    24. 

  24. #define LLC_CONN_EV_TYPE_P_TMR		 6
    25. 

  25. #define LLC_CONN_EV_TYPE_REJ_TMR	 7
    26. 

  26. #define LLC_CONN_EV_TYPE_BUSY_TMR	 8
    27. 

  27. #define LLC_CONN_EV_TYPE_RPT_STATUS	 9
    28. 

  28. #define LLC_CONN_EV_TYPE_SENDACK_TMR	10
    29. 

  29. 

  30. #define NBR_CONN_EV		   5
    31. 

  31. /* Connection events which cause state transitions when fully qualified */
    32. 

  32. 

  33. #define LLC_CONN_EV_CONN_REQ				 1
    34. 

  34. #define LLC_CONN_EV_CONN_RESP				 2
    35. 

  35. #define LLC_CONN_EV_DATA_REQ				 3
    36. 

  36. #define LLC_CONN_EV_DISC_REQ				 4
    37. 

  37. #define LLC_CONN_EV_RESET_REQ				 5
    38. 

  38. #define LLC_CONN_EV_RESET_RESP				 6
    39. 

  39. #define LLC_CONN_EV_LOCAL_BUSY_DETECTED			 7
    40. 

  40. #define LLC_CONN_EV_LOCAL_BUSY_CLEARED			 8
    41. 

  41. #define LLC_CONN_EV_RX_BAD_PDU				 9
    42. 

  42. #define LLC_CONN_EV_RX_DISC_CMD_Pbit_SET_X		10
    43. 

  43. #define LLC_CONN_EV_RX_DM_RSP_Fbit_SET_X		11
    44. 

  44. #define LLC_CONN_EV_RX_FRMR_RSP_Fbit_SET_X		12
    45. 

  45. #define LLC_CONN_EV_RX_I_CMD_Pbit_SET_X			13
    46. 

  46. #define LLC_CONN_EV_RX_I_CMD_Pbit_SET_X_UNEXPD_Ns	14
    47. 

  47. #define LLC_CONN_EV_RX_I_CMD_Pbit_SET_X_INVAL_Ns	15
    48. 

  48. #define LLC_CONN_EV_RX_I_RSP_Fbit_SET_X			16
    49. 

  49. #define LLC_CONN_EV_RX_I_RSP_Fbit_SET_X_UNEXPD_Ns	17
    50. 

  50. #define LLC_CONN_EV_RX_I_RSP_Fbit_SET_X_INVAL_Ns	18
    51. 

  51. #define LLC_CONN_EV_RX_REJ_CMD_Pbit_SET_X		19
    52. 

  52. #define LLC_CONN_EV_RX_REJ_RSP_Fbit_SET_X		20
    53. 

  53. #define LLC_CONN_EV_RX_RNR_CMD_Pbit_SET_X		21
    54. 

  54. #define LLC_CONN_EV_RX_RNR_RSP_Fbit_SET_X		22
    55. 

  55. #define LLC_CONN_EV_RX_RR_CMD_Pbit_SET_X		23
    56. 

  56. #define LLC_CONN_EV_RX_RR_RSP_Fbit_SET_X		24
    57. 

  57. #define LLC_CONN_EV_RX_SABME_CMD_Pbit_SET_X		25
    58. 

  58. #define LLC_CONN_EV_RX_UA_RSP_Fbit_SET_X		26
    59. 

  59. #define LLC_CONN_EV_RX_XXX_CMD_Pbit_SET_X		27
    60. 

  60. #define LLC_CONN_EV_RX_XXX_RSP_Fbit_SET_X		28
    61. 

  61. #define LLC_CONN_EV_RX_XXX_YYY				29
    62. 

  62. #define LLC_CONN_EV_RX_ZZZ_CMD_Pbit_SET_X_INVAL_Nr	30
    63. 

  63. #define LLC_CONN_EV_RX_ZZZ_RSP_Fbit_SET_X_INVAL_Nr	31
    64. 

  64. #define LLC_CONN_EV_P_TMR_EXP				32
    65. 

  65. #define LLC_CONN_EV_ACK_TMR_EXP				33
    66. 

  66. #define LLC_CONN_EV_REJ_TMR_EXP				34
    67. 

  67. #define LLC_CONN_EV_BUSY_TMR_EXP			35
    68. 

  68. #define LLC_CONN_EV_RX_XXX_CMD_Pbit_SET_1		36
    69. 

  69. #define LLC_CONN_EV_RX_XXX_CMD_Pbit_SET_0		37
    70. 

  70. #define LLC_CONN_EV_RX_I_CMD_Pbit_SET_0_UNEXPD_Ns	38
    71. 

  71. #define LLC_CONN_EV_RX_I_RSP_Fbit_SET_0_UNEXPD_Ns	39
    72. 

  72. #define LLC_CONN_EV_RX_I_RSP_Fbit_SET_1_UNEXPD_Ns	40
    73. 

  73. #define LLC_CONN_EV_RX_I_CMD_Pbit_SET_1_UNEXPD_Ns	41
    74. 

  74. #define LLC_CONN_EV_RX_I_CMD_Pbit_SET_0			42
    75. 

  75. #define LLC_CONN_EV_RX_I_RSP_Fbit_SET_0			43
    76. 

  76. #define LLC_CONN_EV_RX_I_CMD_Pbit_SET_1			44
    77. 

  77. #define LLC_CONN_EV_RX_RR_CMD_Pbit_SET_0		45
    78. 

  78. #define LLC_CONN_EV_RX_RR_RSP_Fbit_SET_0		46
    79. 

  79. #define LLC_CONN_EV_RX_RR_RSP_Fbit_SET_1		47
    80. 

  80. #define LLC_CONN_EV_RX_RR_CMD_Pbit_SET_1		48
    81. 

  81. #define LLC_CONN_EV_RX_RNR_CMD_Pbit_SET_0		49
    82. 

  82. #define LLC_CONN_EV_RX_RNR_RSP_Fbit_SET_0		50
    83. 

  83. #define LLC_CONN_EV_RX_RNR_RSP_Fbit_SET_1		51
    84. 

  84. #define LLC_CONN_EV_RX_RNR_CMD_Pbit_SET_1		52
    85. 

  85. #define LLC_CONN_EV_RX_REJ_CMD_Pbit_SET_0		53
    86. 

  86. #define LLC_CONN_EV_RX_REJ_RSP_Fbit_SET_0		54
    87. 

  87. #define LLC_CONN_EV_RX_REJ_CMD_Pbit_SET_1		55
    88. 

  88. #define LLC_CONN_EV_RX_I_RSP_Fbit_SET_1			56
    89. 

  89. #define LLC_CONN_EV_RX_REJ_RSP_Fbit_SET_1		57
    90. 

  90. #define LLC_CONN_EV_RX_XXX_RSP_Fbit_SET_1		58
    91. 

  91. #define LLC_CONN_EV_TX_BUFF_FULL			59
    92. 

  92. 

  93. #define LLC_CONN_EV_INIT_P_F_CYCLE			100
    94. 

  94. /*
    95. 

  95.  * Connection event qualifiers; for some events a certain combination of
    96. 

  96.  * these qualifiers must be TRUE before event recognized valid for state;
    97. 

  97.  * these constants act as indexes into the Event Qualifier function
    98. 

  98.  * table
    99. 

  99.  */
    100. 

  100. #define LLC_CONN_EV_QFY_DATA_FLAG_EQ_1		 1
    101. 

  101. #define LLC_CONN_EV_QFY_DATA_FLAG_EQ_0		 2
    102. 

  102. #define LLC_CONN_EV_QFY_DATA_FLAG_EQ_2		 3
    103. 

  103. #define LLC_CONN_EV_QFY_P_FLAG_EQ_1		 4
    104. 

  104. #define LLC_CONN_EV_QFY_P_FLAG_EQ_0		 5
    105. 

  105. #define LLC_CONN_EV_QFY_P_FLAG_EQ_Fbit		 6
    106. 

  106. #define LLC_CONN_EV_QFY_REMOTE_BUSY_EQ_0	 7
    107. 

  107. #define LLC_CONN_EV_QFY_RETRY_CNT_LT_N2		 8
    108. 

  108. #define LLC_CONN_EV_QFY_RETRY_CNT_GTE_N2	 9
    109. 

  109. #define LLC_CONN_EV_QFY_S_FLAG_EQ_1		10
    110. 

  110. #define LLC_CONN_EV_QFY_S_FLAG_EQ_0		11
    111. 

  111. #define LLC_CONN_EV_QFY_INIT_P_F_CYCLE		12
    112. 

  112. 

  113. struct llc_conn_state_ev {
    114. 

  114. 	u8 type;
    115. 

  115. 	u8 prim;
    116. 

  116. 	u8 prim_type;
    117. 

  117. 	u8 reason;
    118. 

  118. 	u8 status;
    119. 

  119. 	u8 ind_prim;
    120. 

  120. 	u8 cfm_prim;
    121. 

  121. };
    122. 

  122. 

  123. static __inline__ struct llc_conn_state_ev *llc_conn_ev(struct sk_buff *skb)
    124. 

  124. {
    125. 

  125. 	return (struct llc_conn_state_ev *)skb->cb;
    126. 

  126. }
    127. 

  127. 

  128. typedef int (*llc_conn_ev_t)(struct sock *sk, struct sk_buff *skb);
    129. 

  129. typedef int (*llc_conn_ev_qfyr_t)(struct sock *sk, struct sk_buff *skb);
    130. 

  130. 

  131. int llc_conn_ev_conn_req(struct sock *sk, struct sk_buff *skb);
    132. 

  132. int llc_conn_ev_data_req(struct sock *sk, struct sk_buff *skb);
    133. 

  133. int llc_conn_ev_disc_req(struct sock *sk, struct sk_buff *skb);
    134. 

  134. int llc_conn_ev_rst_req(struct sock *sk, struct sk_buff *skb);
    135. 

  135. int llc_conn_ev_local_busy_detected(struct sock *sk, struct sk_buff *skb);
    136. 

  136. int llc_conn_ev_local_busy_cleared(struct sock *sk, struct sk_buff *skb);
    137. 

  137. int llc_conn_ev_rx_bad_pdu(struct sock *sk, struct sk_buff *skb);
    138. 

  138. int llc_conn_ev_rx_disc_cmd_pbit_set_x(struct sock *sk, struct sk_buff *skb);
    139. 

  139. int llc_conn_ev_rx_dm_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb);
    140. 

  140. int llc_conn_ev_rx_frmr_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb);
    141. 

  141. int llc_conn_ev_rx_i_cmd_pbit_set_x_inval_ns(struct sock *sk,
    142. 

  142. 					     struct sk_buff *skb);
    143. 

  143. int llc_conn_ev_rx_i_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb);
    144. 

  144. int llc_conn_ev_rx_i_rsp_fbit_set_x_unexpd_ns(struct sock *sk,
    145. 

  145. 					      struct sk_buff *skb);
    146. 

  146. int llc_conn_ev_rx_i_rsp_fbit_set_x_inval_ns(struct sock *sk,
    147. 

  147. 					     struct sk_buff *skb);
    148. 

  148. int llc_conn_ev_rx_rej_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb);
    149. 

  149. int llc_conn_ev_rx_sabme_cmd_pbit_set_x(struct sock *sk, struct sk_buff *skb);
    150. 

  150. int llc_conn_ev_rx_ua_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb);
    151. 

  151. int llc_conn_ev_rx_xxx_cmd_pbit_set_x(struct sock *sk, struct sk_buff *skb);
    152. 

  152. int llc_conn_ev_rx_xxx_rsp_fbit_set_x(struct sock *sk, struct sk_buff *skb);
    153. 

  153. int llc_conn_ev_rx_zzz_cmd_pbit_set_x_inval_nr(struct sock *sk,
    154. 

  154. 					       struct sk_buff *skb);
    155. 

  155. int llc_conn_ev_rx_zzz_rsp_fbit_set_x_inval_nr(struct sock *sk,
    156. 

  156. 					       struct sk_buff *skb);
    157. 

  157. int llc_conn_ev_p_tmr_exp(struct sock *sk, struct sk_buff *skb);
    158. 

  158. int llc_conn_ev_ack_tmr_exp(struct sock *sk, struct sk_buff *skb);
    159. 

  159. int llc_conn_ev_rej_tmr_exp(struct sock *sk, struct sk_buff *skb);
    160. 

  160. int llc_conn_ev_busy_tmr_exp(struct sock *sk, struct sk_buff *skb);
    161. 

  161. int llc_conn_ev_sendack_tmr_exp(struct sock *sk, struct sk_buff *skb);
    162. 

  162. /* NOT_USED functions and their variations */
    163. 

  163. int llc_conn_ev_rx_xxx_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb);
    164. 

  164. int llc_conn_ev_rx_xxx_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb);
    165. 

  165. int llc_conn_ev_rx_i_cmd_pbit_set_0_unexpd_ns(struct sock *sk,
    166. 

  166. 					      struct sk_buff *skb);
    167. 

  167. int llc_conn_ev_rx_i_cmd_pbit_set_1_unexpd_ns(struct sock *sk,
    168. 

  168. 					      struct sk_buff *skb);
    169. 

  169. int llc_conn_ev_rx_i_cmd_pbit_set_0(struct sock *sk, struct sk_buff *skb);
    170. 

  170. int llc_conn_ev_rx_i_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb);
    171. 

  171. int llc_conn_ev_rx_i_rsp_fbit_set_0_unexpd_ns(struct sock *sk,
    172. 

  172. 					      struct sk_buff *skb);
    173. 

  173. int llc_conn_ev_rx_i_rsp_fbit_set_1_unexpd_ns(struct sock *sk,
    174. 

  174. 					      struct sk_buff *skb);
    175. 

  175. int llc_conn_ev_rx_i_rsp_fbit_set_0(struct sock *sk, struct sk_buff *skb);
    176. 

  176. int llc_conn_ev_rx_i_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb);
    177. 

  177. int llc_conn_ev_rx_rr_cmd_pbit_set_0(struct sock *sk, struct sk_buff *skb);
    178. 

  178. int llc_conn_ev_rx_rr_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb);
    179. 

  179. int llc_conn_ev_rx_rr_rsp_fbit_set_0(struct sock *sk, struct sk_buff *skb);
    180. 

  180. int llc_conn_ev_rx_rr_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb);
    181. 

  181. int llc_conn_ev_rx_rnr_cmd_pbit_set_0(struct sock *sk, struct sk_buff *skb);
    182. 

  182. int llc_conn_ev_rx_rnr_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb);
    183. 

  183. int llc_conn_ev_rx_rnr_rsp_fbit_set_0(struct sock *sk, struct sk_buff *skb);
    184. 

  184. int llc_conn_ev_rx_rnr_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb);
    185. 

  185. int llc_conn_ev_rx_rej_cmd_pbit_set_0(struct sock *sk, struct sk_buff *skb);
    186. 

  186. int llc_conn_ev_rx_rej_cmd_pbit_set_1(struct sock *sk, struct sk_buff *skb);
    187. 

  187. int llc_conn_ev_rx_rej_rsp_fbit_set_0(struct sock *sk, struct sk_buff *skb);
    188. 

  188. int llc_conn_ev_rx_rej_rsp_fbit_set_1(struct sock *sk, struct sk_buff *skb);
    189. 

  189. int llc_conn_ev_rx_any_frame(struct sock *sk, struct sk_buff *skb);
    190. 

  190. int llc_conn_ev_tx_buffer_full(struct sock *sk, struct sk_buff *skb);
    191. 

  191. int llc_conn_ev_init_p_f_cycle(struct sock *sk, struct sk_buff *skb);
    192. 

  192. 

  193. /* Available connection action qualifiers */
    194. 

  194. int llc_conn_ev_qlfy_data_flag_eq_1(struct sock *sk, struct sk_buff *skb);
    195. 

  195. int llc_conn_ev_qlfy_data_flag_eq_0(struct sock *sk, struct sk_buff *skb);
    196. 

  196. int llc_conn_ev_qlfy_data_flag_eq_2(struct sock *sk, struct sk_buff *skb);
    197. 

  197. int llc_conn_ev_qlfy_p_flag_eq_1(struct sock *sk, struct sk_buff *skb);
    198. 

  198. int llc_conn_ev_qlfy_last_frame_eq_1(struct sock *sk, struct sk_buff *skb);
    199. 

  199. int llc_conn_ev_qlfy_last_frame_eq_0(struct sock *sk, struct sk_buff *skb);
    200. 

  200. int llc_conn_ev_qlfy_p_flag_eq_0(struct sock *sk, struct sk_buff *skb);
    201. 

  201. int llc_conn_ev_qlfy_p_flag_eq_f(struct sock *sk, struct sk_buff *skb);
    202. 

  202. int llc_conn_ev_qlfy_remote_busy_eq_0(struct sock *sk, struct sk_buff *skb);
    203. 

  203. int llc_conn_ev_qlfy_remote_busy_eq_1(struct sock *sk, struct sk_buff *skb);
    204. 

  204. int llc_conn_ev_qlfy_retry_cnt_lt_n2(struct sock *sk, struct sk_buff *skb);
    205. 

  205. int llc_conn_ev_qlfy_retry_cnt_gte_n2(struct sock *sk, struct sk_buff *skb);
    206. 

  206. int llc_conn_ev_qlfy_s_flag_eq_1(struct sock *sk, struct sk_buff *skb);
    207. 

  207. int llc_conn_ev_qlfy_s_flag_eq_0(struct sock *sk, struct sk_buff *skb);
    208. 

  208. int llc_conn_ev_qlfy_cause_flag_eq_1(struct sock *sk, struct sk_buff *skb);
    209. 

  209. int llc_conn_ev_qlfy_cause_flag_eq_0(struct sock *sk, struct sk_buff *skb);
    210. 

  210. int llc_conn_ev_qlfy_set_status_conn(struct sock *sk, struct sk_buff *skb);
    211. 

  211. int llc_conn_ev_qlfy_set_status_disc(struct sock *sk, struct sk_buff *skb);
    212. 

  212. int llc_conn_ev_qlfy_set_status_failed(struct sock *sk, struct sk_buff *skb);
    213. 

  213. int llc_conn_ev_qlfy_set_status_remote_busy(struct sock *sk,
    214. 

  214. 					    struct sk_buff *skb);
    215. 

  215. int llc_conn_ev_qlfy_set_status_refuse(struct sock *sk, struct sk_buff *skb);
    216. 

  216. int llc_conn_ev_qlfy_set_status_conflict(struct sock *sk, struct sk_buff *skb);
    217. 

  217. int llc_conn_ev_qlfy_set_status_rst_done(struct sock *sk, struct sk_buff *skb);
    218. 

  218. 

  219. static __inline__ int llc_conn_space(struct sock *sk, struct sk_buff *skb)
    220. 

  220. {
    221. 

  221. 	return atomic_read(&sk->sk_rmem_alloc) + skb->truesize <
    222. 

  222. 	       (unsigned int)sk->sk_rcvbuf;
    223. 

  223. }
    224. 

  224. #endif /* LLC_C_EV_H */
    225. 

  225.