projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * llc_s_ev.c - Defines SAP component events | |
| 3 | * | |
| 4 | * The followed event functions are SAP component events which are described | |
| 5 | * in 802.2 LLC protocol standard document. | |
| 6 | * | |
| 7 | * Copyright (c) 1997 by Procom Technology, Inc. | |
| 8 | * 2001-2003 by Arnaldo Carvalho de Melo <[email protected]> | |
| 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/socket.h> | |
| 18 | #include <net/sock.h> | |
| 19 | #include <net/llc_if.h> | |
| 20 | #include <net/llc_s_ev.h> | |
| 21 | #include <net/llc_pdu.h> | |
| 22 | ||
| 23 | int llc_sap_ev_activation_req(struct llc_sap *sap, struct sk_buff *skb) | |
| 24 | { | |
| 25 | struct llc_sap_state_ev *ev = llc_sap_ev(skb); | |
| 26 | ||
| 27 | return ev->type == LLC_SAP_EV_TYPE_SIMPLE && | |
| 28 | ev->prim_type == LLC_SAP_EV_ACTIVATION_REQ ? 0 : 1; | |
| 29 | } | |
| 30 | ||
| 31 | int llc_sap_ev_rx_ui(struct llc_sap *sap, struct sk_buff *skb) | |
| 32 | { | |
| 33 | struct llc_sap_state_ev *ev = llc_sap_ev(skb); | |
| 34 | struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb); | |
| 35 | ||
| 36 | return ev->type == LLC_SAP_EV_TYPE_PDU && LLC_PDU_IS_CMD(pdu) && | |
| 37 | LLC_PDU_TYPE_IS_U(pdu) && | |
| 38 | LLC_U_PDU_CMD(pdu) == LLC_1_PDU_CMD_UI ? 0 : 1; | |
| 39 | } | |
| 40 | ||
| 41 | int llc_sap_ev_unitdata_req(struct llc_sap *sap, struct sk_buff *skb) | |
| 42 | { | |
| 43 | struct llc_sap_state_ev *ev = llc_sap_ev(skb); | |
| 44 | ||
| 45 | return ev->type == LLC_SAP_EV_TYPE_PRIM && | |
| 46 | ev->prim == LLC_DATAUNIT_PRIM && | |
| 47 | ev->prim_type == LLC_PRIM_TYPE_REQ ? 0 : 1; | |
| 48 | ||
| 49 | } | |
| 50 | ||
| 51 | int llc_sap_ev_xid_req(struct llc_sap *sap, struct sk_buff *skb) | |
| 52 | { | |
| 53 | struct llc_sap_state_ev *ev = llc_sap_ev(skb); | |
| 54 | ||
| 55 | return ev->type == LLC_SAP_EV_TYPE_PRIM && | |
| 56 | ev->prim == LLC_XID_PRIM && | |
| 57 | ev->prim_type == LLC_PRIM_TYPE_REQ ? 0 : 1; | |
| 58 | } | |
| 59 | ||
| 60 | int llc_sap_ev_rx_xid_c(struct llc_sap *sap, struct sk_buff *skb) | |
| 61 | { | |
| 62 | struct llc_sap_state_ev *ev = llc_sap_ev(skb); | |
| 63 | struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb); | |
| 64 | ||
| 65 | return ev->type == LLC_SAP_EV_TYPE_PDU && LLC_PDU_IS_CMD(pdu) && | |
| 66 | LLC_PDU_TYPE_IS_U(pdu) && | |
| 67 | LLC_U_PDU_CMD(pdu) == LLC_1_PDU_CMD_XID ? 0 : 1; | |
| 68 | } | |
| 69 | ||
| 70 | int llc_sap_ev_rx_xid_r(struct llc_sap *sap, struct sk_buff *skb) | |
| 71 | { | |
| 72 | struct llc_sap_state_ev *ev = llc_sap_ev(skb); | |
| 73 | struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb); | |
| 74 | ||
| 75 | return ev->type == LLC_SAP_EV_TYPE_PDU && LLC_PDU_IS_RSP(pdu) && | |
| 76 | LLC_PDU_TYPE_IS_U(pdu) && | |
| 77 | LLC_U_PDU_RSP(pdu) == LLC_1_PDU_CMD_XID ? 0 : 1; | |
| 78 | } | |
| 79 | ||
| 80 | int llc_sap_ev_test_req(struct llc_sap *sap, struct sk_buff *skb) | |
| 81 | { | |
| 82 | struct llc_sap_state_ev *ev = llc_sap_ev(skb); | |
| 83 | ||
| 84 | return ev->type == LLC_SAP_EV_TYPE_PRIM && | |
| 85 | ev->prim == LLC_TEST_PRIM && | |
| 86 | ev->prim_type == LLC_PRIM_TYPE_REQ ? 0 : 1; | |
| 87 | } | |
| 88 | ||
| 89 | int llc_sap_ev_rx_test_c(struct llc_sap *sap, struct sk_buff *skb) | |
| 90 | { | |
| 91 | struct llc_sap_state_ev *ev = llc_sap_ev(skb); | |
| 92 | struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb); | |
| 93 | ||
| 94 | return ev->type == LLC_SAP_EV_TYPE_PDU && LLC_PDU_IS_CMD(pdu) && | |
| 95 | LLC_PDU_TYPE_IS_U(pdu) && | |
| 96 | LLC_U_PDU_CMD(pdu) == LLC_1_PDU_CMD_TEST ? 0 : 1; | |
| 97 | } | |
| 98 | ||
| 99 | int llc_sap_ev_rx_test_r(struct llc_sap *sap, struct sk_buff *skb) | |
| 100 | { | |
| 101 | struct llc_sap_state_ev *ev = llc_sap_ev(skb); | |
| 102 | struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb); | |
| 103 | ||
| 104 | return ev->type == LLC_SAP_EV_TYPE_PDU && LLC_PDU_IS_RSP(pdu) && | |
| 105 | LLC_PDU_TYPE_IS_U(pdu) && | |
| 106 | LLC_U_PDU_RSP(pdu) == LLC_1_PDU_CMD_TEST ? 0 : 1; | |
| 107 | } | |
| 108 | ||
| 109 | int llc_sap_ev_deactivation_req(struct llc_sap *sap, struct sk_buff *skb) | |
| 110 | { | |
| 111 | struct llc_sap_state_ev *ev = llc_sap_ev(skb); | |
| 112 | ||
| 113 | return ev->type == LLC_SAP_EV_TYPE_SIMPLE && | |
| 114 | ev->prim_type == LLC_SAP_EV_DEACTIVATION_REQ ? 0 : 1; | |
| 115 | } |