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183 lines
5.7 KiB
183 lines
5.7 KiB
/* |
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* llc_s_st.c - Defines SAP component state machine transitions. |
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* |
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* The followed transitions are SAP component state machine transitions |
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* which are described in 802.2 LLC protocol standard document. |
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* |
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* Copyright (c) 1997 by Procom Technology, Inc. |
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* 2001-2003 by Arnaldo Carvalho de Melo <[email protected]> |
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* |
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* This program can be redistributed or modified under the terms of the |
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* GNU General Public License as published by the Free Software Foundation. |
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* This program is distributed without any warranty or implied warranty |
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* of merchantability or fitness for a particular purpose. |
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* |
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* See the GNU General Public License for more details. |
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*/ |
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#include <linux/types.h> |
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#include <net/llc_if.h> |
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#include <net/llc_s_ev.h> |
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#include <net/llc_s_ac.h> |
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#include <net/llc_s_st.h> |
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/* dummy last-transition indicator; common to all state transition groups |
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* last entry for this state |
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* all members are zeros, .bss zeroes it |
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*/ |
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static struct llc_sap_state_trans llc_sap_state_trans_end; |
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/* state LLC_SAP_STATE_INACTIVE transition for |
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* LLC_SAP_EV_ACTIVATION_REQ event |
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*/ |
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static const llc_sap_action_t llc_sap_inactive_state_actions_1[] = { |
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[0] = llc_sap_action_report_status, |
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[1] = NULL, |
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}; |
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static struct llc_sap_state_trans llc_sap_inactive_state_trans_1 = { |
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.ev = llc_sap_ev_activation_req, |
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.next_state = LLC_SAP_STATE_ACTIVE, |
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.ev_actions = llc_sap_inactive_state_actions_1, |
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}; |
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/* array of pointers; one to each transition */ |
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static struct llc_sap_state_trans *llc_sap_inactive_state_transitions[] = { |
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[0] = &llc_sap_inactive_state_trans_1, |
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[1] = &llc_sap_state_trans_end, |
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}; |
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/* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_RX_UI event */ |
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static const llc_sap_action_t llc_sap_active_state_actions_1[] = { |
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[0] = llc_sap_action_unitdata_ind, |
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[1] = NULL, |
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}; |
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static struct llc_sap_state_trans llc_sap_active_state_trans_1 = { |
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.ev = llc_sap_ev_rx_ui, |
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.next_state = LLC_SAP_STATE_ACTIVE, |
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.ev_actions = llc_sap_active_state_actions_1, |
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}; |
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/* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_UNITDATA_REQ event */ |
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static const llc_sap_action_t llc_sap_active_state_actions_2[] = { |
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[0] = llc_sap_action_send_ui, |
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[1] = NULL, |
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}; |
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static struct llc_sap_state_trans llc_sap_active_state_trans_2 = { |
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.ev = llc_sap_ev_unitdata_req, |
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.next_state = LLC_SAP_STATE_ACTIVE, |
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.ev_actions = llc_sap_active_state_actions_2, |
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}; |
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/* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_XID_REQ event */ |
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static const llc_sap_action_t llc_sap_active_state_actions_3[] = { |
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[0] = llc_sap_action_send_xid_c, |
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[1] = NULL, |
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}; |
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static struct llc_sap_state_trans llc_sap_active_state_trans_3 = { |
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.ev = llc_sap_ev_xid_req, |
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.next_state = LLC_SAP_STATE_ACTIVE, |
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.ev_actions = llc_sap_active_state_actions_3, |
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}; |
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/* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_RX_XID_C event */ |
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static const llc_sap_action_t llc_sap_active_state_actions_4[] = { |
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[0] = llc_sap_action_send_xid_r, |
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[1] = NULL, |
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}; |
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static struct llc_sap_state_trans llc_sap_active_state_trans_4 = { |
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.ev = llc_sap_ev_rx_xid_c, |
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.next_state = LLC_SAP_STATE_ACTIVE, |
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.ev_actions = llc_sap_active_state_actions_4, |
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}; |
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/* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_RX_XID_R event */ |
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static const llc_sap_action_t llc_sap_active_state_actions_5[] = { |
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[0] = llc_sap_action_xid_ind, |
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[1] = NULL, |
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}; |
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static struct llc_sap_state_trans llc_sap_active_state_trans_5 = { |
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.ev = llc_sap_ev_rx_xid_r, |
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.next_state = LLC_SAP_STATE_ACTIVE, |
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.ev_actions = llc_sap_active_state_actions_5, |
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}; |
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/* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_TEST_REQ event */ |
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static const llc_sap_action_t llc_sap_active_state_actions_6[] = { |
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[0] = llc_sap_action_send_test_c, |
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[1] = NULL, |
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}; |
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static struct llc_sap_state_trans llc_sap_active_state_trans_6 = { |
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.ev = llc_sap_ev_test_req, |
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.next_state = LLC_SAP_STATE_ACTIVE, |
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.ev_actions = llc_sap_active_state_actions_6, |
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}; |
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/* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_RX_TEST_C event */ |
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static const llc_sap_action_t llc_sap_active_state_actions_7[] = { |
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[0] = llc_sap_action_send_test_r, |
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[1] = NULL, |
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}; |
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static struct llc_sap_state_trans llc_sap_active_state_trans_7 = { |
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.ev = llc_sap_ev_rx_test_c, |
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.next_state = LLC_SAP_STATE_ACTIVE, |
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.ev_actions = llc_sap_active_state_actions_7 |
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}; |
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/* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_RX_TEST_R event */ |
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static const llc_sap_action_t llc_sap_active_state_actions_8[] = { |
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[0] = llc_sap_action_test_ind, |
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[1] = NULL, |
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}; |
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static struct llc_sap_state_trans llc_sap_active_state_trans_8 = { |
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.ev = llc_sap_ev_rx_test_r, |
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.next_state = LLC_SAP_STATE_ACTIVE, |
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.ev_actions = llc_sap_active_state_actions_8, |
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}; |
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/* state LLC_SAP_STATE_ACTIVE transition for |
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* LLC_SAP_EV_DEACTIVATION_REQ event |
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*/ |
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static const llc_sap_action_t llc_sap_active_state_actions_9[] = { |
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[0] = llc_sap_action_report_status, |
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[1] = NULL, |
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}; |
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static struct llc_sap_state_trans llc_sap_active_state_trans_9 = { |
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.ev = llc_sap_ev_deactivation_req, |
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.next_state = LLC_SAP_STATE_INACTIVE, |
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.ev_actions = llc_sap_active_state_actions_9 |
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}; |
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/* array of pointers; one to each transition */ |
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static struct llc_sap_state_trans *llc_sap_active_state_transitions[] = { |
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[0] = &llc_sap_active_state_trans_2, |
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[1] = &llc_sap_active_state_trans_1, |
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[2] = &llc_sap_active_state_trans_3, |
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[3] = &llc_sap_active_state_trans_4, |
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[4] = &llc_sap_active_state_trans_5, |
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[5] = &llc_sap_active_state_trans_6, |
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[6] = &llc_sap_active_state_trans_7, |
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[7] = &llc_sap_active_state_trans_8, |
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[8] = &llc_sap_active_state_trans_9, |
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[9] = &llc_sap_state_trans_end, |
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}; |
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/* SAP state transition table */ |
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struct llc_sap_state llc_sap_state_table[LLC_NR_SAP_STATES] = { |
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[LLC_SAP_STATE_INACTIVE - 1] = { |
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.curr_state = LLC_SAP_STATE_INACTIVE, |
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.transitions = llc_sap_inactive_state_transitions, |
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}, |
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[LLC_SAP_STATE_ACTIVE - 1] = { |
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.curr_state = LLC_SAP_STATE_ACTIVE, |
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.transitions = llc_sap_active_state_transitions, |
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}, |
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};
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