diff options
Diffstat (limited to 'kernel/net/llc/llc_s_st.c')
| -rw-r--r-- | kernel/net/llc/llc_s_st.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/kernel/net/llc/llc_s_st.c b/kernel/net/llc/llc_s_st.c new file mode 100644 index 000000000..308c61688 --- /dev/null +++ b/kernel/net/llc/llc_s_st.c @@ -0,0 +1,183 @@ +/* + * llc_s_st.c - Defines SAP component state machine transitions. + * + * The followed transitions are SAP component state machine transitions + * which are described in 802.2 LLC protocol standard document. + * + * Copyright (c) 1997 by Procom Technology, Inc. + * 2001-2003 by Arnaldo Carvalho de Melo <acme@conectiva.com.br> + * + * This program can be redistributed or modified under the terms of the + * GNU General Public License as published by the Free Software Foundation. + * This program is distributed without any warranty or implied warranty + * of merchantability or fitness for a particular purpose. + * + * See the GNU General Public License for more details. + */ +#include <linux/types.h> +#include <net/llc_if.h> +#include <net/llc_s_ev.h> +#include <net/llc_s_ac.h> +#include <net/llc_s_st.h> + +/* dummy last-transition indicator; common to all state transition groups + * last entry for this state + * all members are zeros, .bss zeroes it + */ +static struct llc_sap_state_trans llc_sap_state_trans_end; + +/* state LLC_SAP_STATE_INACTIVE transition for + * LLC_SAP_EV_ACTIVATION_REQ event + */ +static const llc_sap_action_t llc_sap_inactive_state_actions_1[] = { + [0] = llc_sap_action_report_status, + [1] = NULL, +}; + +static struct llc_sap_state_trans llc_sap_inactive_state_trans_1 = { + .ev = llc_sap_ev_activation_req, + .next_state = LLC_SAP_STATE_ACTIVE, + .ev_actions = llc_sap_inactive_state_actions_1, +}; + +/* array of pointers; one to each transition */ +static struct llc_sap_state_trans *llc_sap_inactive_state_transitions[] = { + [0] = &llc_sap_inactive_state_trans_1, + [1] = &llc_sap_state_trans_end, +}; + +/* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_RX_UI event */ +static const llc_sap_action_t llc_sap_active_state_actions_1[] = { + [0] = llc_sap_action_unitdata_ind, + [1] = NULL, +}; + +static struct llc_sap_state_trans llc_sap_active_state_trans_1 = { + .ev = llc_sap_ev_rx_ui, + .next_state = LLC_SAP_STATE_ACTIVE, + .ev_actions = llc_sap_active_state_actions_1, +}; + +/* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_UNITDATA_REQ event */ +static const llc_sap_action_t llc_sap_active_state_actions_2[] = { + [0] = llc_sap_action_send_ui, + [1] = NULL, +}; + +static struct llc_sap_state_trans llc_sap_active_state_trans_2 = { + .ev = llc_sap_ev_unitdata_req, + .next_state = LLC_SAP_STATE_ACTIVE, + .ev_actions = llc_sap_active_state_actions_2, +}; + +/* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_XID_REQ event */ +static const llc_sap_action_t llc_sap_active_state_actions_3[] = { + [0] = llc_sap_action_send_xid_c, + [1] = NULL, +}; + +static struct llc_sap_state_trans llc_sap_active_state_trans_3 = { + .ev = llc_sap_ev_xid_req, + .next_state = LLC_SAP_STATE_ACTIVE, + .ev_actions = llc_sap_active_state_actions_3, +}; + +/* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_RX_XID_C event */ +static const llc_sap_action_t llc_sap_active_state_actions_4[] = { + [0] = llc_sap_action_send_xid_r, + [1] = NULL, +}; + +static struct llc_sap_state_trans llc_sap_active_state_trans_4 = { + .ev = llc_sap_ev_rx_xid_c, + .next_state = LLC_SAP_STATE_ACTIVE, + .ev_actions = llc_sap_active_state_actions_4, +}; + +/* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_RX_XID_R event */ +static const llc_sap_action_t llc_sap_active_state_actions_5[] = { + [0] = llc_sap_action_xid_ind, + [1] = NULL, +}; + +static struct llc_sap_state_trans llc_sap_active_state_trans_5 = { + .ev = llc_sap_ev_rx_xid_r, + .next_state = LLC_SAP_STATE_ACTIVE, + .ev_actions = llc_sap_active_state_actions_5, +}; + +/* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_TEST_REQ event */ +static const llc_sap_action_t llc_sap_active_state_actions_6[] = { + [0] = llc_sap_action_send_test_c, + [1] = NULL, +}; + +static struct llc_sap_state_trans llc_sap_active_state_trans_6 = { + .ev = llc_sap_ev_test_req, + .next_state = LLC_SAP_STATE_ACTIVE, + .ev_actions = llc_sap_active_state_actions_6, +}; + +/* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_RX_TEST_C event */ +static const llc_sap_action_t llc_sap_active_state_actions_7[] = { + [0] = llc_sap_action_send_test_r, + [1] = NULL, +}; + +static struct llc_sap_state_trans llc_sap_active_state_trans_7 = { + .ev = llc_sap_ev_rx_test_c, + .next_state = LLC_SAP_STATE_ACTIVE, + .ev_actions = llc_sap_active_state_actions_7 +}; + +/* state LLC_SAP_STATE_ACTIVE transition for LLC_SAP_EV_RX_TEST_R event */ +static const llc_sap_action_t llc_sap_active_state_actions_8[] = { + [0] = llc_sap_action_test_ind, + [1] = NULL, +}; + +static struct llc_sap_state_trans llc_sap_active_state_trans_8 = { + .ev = llc_sap_ev_rx_test_r, + .next_state = LLC_SAP_STATE_ACTIVE, + .ev_actions = llc_sap_active_state_actions_8, +}; + +/* state LLC_SAP_STATE_ACTIVE transition for + * LLC_SAP_EV_DEACTIVATION_REQ event + */ +static const llc_sap_action_t llc_sap_active_state_actions_9[] = { + [0] = llc_sap_action_report_status, + [1] = NULL, +}; + +static struct llc_sap_state_trans llc_sap_active_state_trans_9 = { + .ev = llc_sap_ev_deactivation_req, + .next_state = LLC_SAP_STATE_INACTIVE, + .ev_actions = llc_sap_active_state_actions_9 +}; + +/* array of pointers; one to each transition */ +static struct llc_sap_state_trans *llc_sap_active_state_transitions[] = { + [0] = &llc_sap_active_state_trans_2, + [1] = &llc_sap_active_state_trans_1, + [2] = &llc_sap_active_state_trans_3, + [3] = &llc_sap_active_state_trans_4, + [4] = &llc_sap_active_state_trans_5, + [5] = &llc_sap_active_state_trans_6, + [6] = &llc_sap_active_state_trans_7, + [7] = &llc_sap_active_state_trans_8, + [8] = &llc_sap_active_state_trans_9, + [9] = &llc_sap_state_trans_end, +}; + +/* SAP state transition table */ +struct llc_sap_state llc_sap_state_table[LLC_NR_SAP_STATES] = { + [LLC_SAP_STATE_INACTIVE - 1] = { + .curr_state = LLC_SAP_STATE_INACTIVE, + .transitions = llc_sap_inactive_state_transitions, + }, + [LLC_SAP_STATE_ACTIVE - 1] = { + .curr_state = LLC_SAP_STATE_ACTIVE, + .transitions = llc_sap_active_state_transitions, + }, +}; |