Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * llc_s_st.c - Defines SAP component state machine transitions. |
| 3 | * |
| 4 | * The followed transitions are SAP component state machine transitions |
| 5 | * which are described in 802.2 LLC protocol standard document. |
| 6 | * |
| 7 | * Copyright (c) 1997 by Procom Technology, Inc. |
| 8 | * 2001-2003 by Arnaldo Carvalho de Melo <acme@conectiva.com.br> |
| 9 | * |
| 10 | * This program can be redistributed or modified under the terms of the |
| 11 | * GNU General Public License as published by the Free Software Foundation. |
| 12 | * This program is distributed without any warranty or implied warranty |
| 13 | * of merchantability or fitness for a particular purpose. |
| 14 | * |
| 15 | * See the GNU General Public License for more details. |
| 16 | */ |
| 17 | #include <linux/types.h> |
| 18 | #include <net/llc_if.h> |
| 19 | #include <net/llc_s_ev.h> |
| 20 | #include <net/llc_s_ac.h> |
| 21 | #include <net/llc_s_st.h> |
| 22 | |
| 23 | /* dummy last-transition indicator; common to all state transition groups |
| 24 | * last entry for this state |
| 25 | * all members are zeros, .bss zeroes it |
| 26 | */ |
| 27 | static struct llc_sap_state_trans llc_sap_state_trans_end; |
| 28 | |
| 29 | /* state LLC_SAP_STATE_INACTIVE transition for |
| 30 | * LLC_SAP_EV_ACTIVATION_REQ event |
| 31 | */ |
| 32 | static llc_sap_action_t llc_sap_inactive_state_actions_1[] = { |
| 33 | [0] = llc_sap_action_report_status, |
| 34 | [1] = NULL, |
| 35 | }; |
| 36 | |
| 37 | static struct llc_sap_state_trans llc_sap_inactive_state_trans_1 = { |
| 38 | .ev = llc_sap_ev_activation_req, |
| 39 | .next_state = LLC_SAP_STATE_ACTIVE, |
| 40 | .ev_actions = llc_sap_inactive_state_actions_1, |
| 41 | }; |
| 42 | |
| 43 | /* array of pointers; one to each transition */ |
| 44 | static struct llc_sap_state_trans *llc_sap_inactive_state_transitions[] = { |
| 45 | [0] = &llc_sap_inactive_state_trans_1, |
| 46 | [1] = &llc_sap_state_trans_end, |
| 47 | }; |
| 48 | |
| 49 | /* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_RX_UI event */ |
| 50 | static llc_sap_action_t llc_sap_active_state_actions_1[] = { |
| 51 | [0] = llc_sap_action_unitdata_ind, |
| 52 | [1] = NULL, |
| 53 | }; |
| 54 | |
| 55 | static struct llc_sap_state_trans llc_sap_active_state_trans_1 = { |
| 56 | .ev = llc_sap_ev_rx_ui, |
| 57 | .next_state = LLC_SAP_STATE_ACTIVE, |
| 58 | .ev_actions = llc_sap_active_state_actions_1, |
| 59 | }; |
| 60 | |
| 61 | /* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_UNITDATA_REQ event */ |
| 62 | static llc_sap_action_t llc_sap_active_state_actions_2[] = { |
| 63 | [0] = llc_sap_action_send_ui, |
| 64 | [1] = NULL, |
| 65 | }; |
| 66 | |
| 67 | static struct llc_sap_state_trans llc_sap_active_state_trans_2 = { |
| 68 | .ev = llc_sap_ev_unitdata_req, |
| 69 | .next_state = LLC_SAP_STATE_ACTIVE, |
| 70 | .ev_actions = llc_sap_active_state_actions_2, |
| 71 | }; |
| 72 | |
| 73 | /* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_XID_REQ event */ |
| 74 | static llc_sap_action_t llc_sap_active_state_actions_3[] = { |
| 75 | [0] = llc_sap_action_send_xid_c, |
| 76 | [1] = NULL, |
| 77 | }; |
| 78 | |
| 79 | static struct llc_sap_state_trans llc_sap_active_state_trans_3 = { |
| 80 | .ev = llc_sap_ev_xid_req, |
| 81 | .next_state = LLC_SAP_STATE_ACTIVE, |
| 82 | .ev_actions = llc_sap_active_state_actions_3, |
| 83 | }; |
| 84 | |
| 85 | /* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_RX_XID_C event */ |
| 86 | static llc_sap_action_t llc_sap_active_state_actions_4[] = { |
| 87 | [0] = llc_sap_action_send_xid_r, |
| 88 | [1] = NULL, |
| 89 | }; |
| 90 | |
| 91 | static struct llc_sap_state_trans llc_sap_active_state_trans_4 = { |
| 92 | .ev = llc_sap_ev_rx_xid_c, |
| 93 | .next_state = LLC_SAP_STATE_ACTIVE, |
| 94 | .ev_actions = llc_sap_active_state_actions_4, |
| 95 | }; |
| 96 | |
| 97 | /* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_RX_XID_R event */ |
| 98 | static llc_sap_action_t llc_sap_active_state_actions_5[] = { |
| 99 | [0] = llc_sap_action_xid_ind, |
| 100 | [1] = NULL, |
| 101 | }; |
| 102 | |
| 103 | static struct llc_sap_state_trans llc_sap_active_state_trans_5 = { |
| 104 | .ev = llc_sap_ev_rx_xid_r, |
| 105 | .next_state = LLC_SAP_STATE_ACTIVE, |
| 106 | .ev_actions = llc_sap_active_state_actions_5, |
| 107 | }; |
| 108 | |
| 109 | /* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_TEST_REQ event */ |
| 110 | static llc_sap_action_t llc_sap_active_state_actions_6[] = { |
| 111 | [0] = llc_sap_action_send_test_c, |
| 112 | [1] = NULL, |
| 113 | }; |
| 114 | |
| 115 | static struct llc_sap_state_trans llc_sap_active_state_trans_6 = { |
| 116 | .ev = llc_sap_ev_test_req, |
| 117 | .next_state = LLC_SAP_STATE_ACTIVE, |
| 118 | .ev_actions = llc_sap_active_state_actions_6, |
| 119 | }; |
| 120 | |
| 121 | /* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_RX_TEST_C event */ |
| 122 | static llc_sap_action_t llc_sap_active_state_actions_7[] = { |
| 123 | [0] = llc_sap_action_send_test_r, |
| 124 | [1] = NULL, |
| 125 | }; |
| 126 | |
| 127 | static struct llc_sap_state_trans llc_sap_active_state_trans_7 = { |
| 128 | .ev = llc_sap_ev_rx_test_c, |
| 129 | .next_state = LLC_SAP_STATE_ACTIVE, |
| 130 | .ev_actions = llc_sap_active_state_actions_7 |
| 131 | }; |
| 132 | |
| 133 | /* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_RX_TEST_R event */ |
| 134 | static llc_sap_action_t llc_sap_active_state_actions_8[] = { |
| 135 | [0] = llc_sap_action_test_ind, |
| 136 | [1] = NULL, |
| 137 | }; |
| 138 | |
| 139 | static struct llc_sap_state_trans llc_sap_active_state_trans_8 = { |
| 140 | .ev = llc_sap_ev_rx_test_r, |
| 141 | .next_state = LLC_SAP_STATE_ACTIVE, |
| 142 | .ev_actions = llc_sap_active_state_actions_8, |
| 143 | }; |
| 144 | |
| 145 | /* state LLC_SAP_STATE_ACTIVE transition for |
| 146 | * LLC_SAP_EV_DEACTIVATION_REQ event |
| 147 | */ |
| 148 | static llc_sap_action_t llc_sap_active_state_actions_9[] = { |
| 149 | [0] = llc_sap_action_report_status, |
| 150 | [1] = NULL, |
| 151 | }; |
| 152 | |
| 153 | static struct llc_sap_state_trans llc_sap_active_state_trans_9 = { |
| 154 | .ev = llc_sap_ev_deactivation_req, |
| 155 | .next_state = LLC_SAP_STATE_INACTIVE, |
| 156 | .ev_actions = llc_sap_active_state_actions_9 |
| 157 | }; |
| 158 | |
| 159 | /* array of pointers; one to each transition */ |
| 160 | static struct llc_sap_state_trans *llc_sap_active_state_transitions[] = { |
| 161 | [0] = &llc_sap_active_state_trans_2, |
| 162 | [1] = &llc_sap_active_state_trans_1, |
| 163 | [2] = &llc_sap_active_state_trans_3, |
| 164 | [3] = &llc_sap_active_state_trans_4, |
| 165 | [4] = &llc_sap_active_state_trans_5, |
| 166 | [5] = &llc_sap_active_state_trans_6, |
| 167 | [6] = &llc_sap_active_state_trans_7, |
| 168 | [7] = &llc_sap_active_state_trans_8, |
| 169 | [8] = &llc_sap_active_state_trans_9, |
| 170 | [9] = &llc_sap_state_trans_end, |
| 171 | }; |
| 172 | |
| 173 | /* SAP state transition table */ |
| 174 | struct llc_sap_state llc_sap_state_table[LLC_NR_SAP_STATES] = { |
| 175 | [LLC_SAP_STATE_INACTIVE - 1] = { |
| 176 | .curr_state = LLC_SAP_STATE_INACTIVE, |
| 177 | .transitions = llc_sap_inactive_state_transitions, |
YOSHIFUJI Hideaki | d57b186 | 2007-02-09 23:25:01 +0900 | [diff] [blame^] | 178 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | [LLC_SAP_STATE_ACTIVE - 1] = { |
| 180 | .curr_state = LLC_SAP_STATE_ACTIVE, |
| 181 | .transitions = llc_sap_active_state_transitions, |
| 182 | }, |
| 183 | }; |