mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-14 15:54:15 +08:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
116 lines
3.5 KiB
C
116 lines
3.5 KiB
C
/*
|
|
* llc_s_ev.c - Defines SAP component events
|
|
*
|
|
* The followed event functions are SAP component events 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/socket.h>
|
|
#include <net/sock.h>
|
|
#include <net/llc_if.h>
|
|
#include <net/llc_s_ev.h>
|
|
#include <net/llc_pdu.h>
|
|
|
|
int llc_sap_ev_activation_req(struct llc_sap *sap, struct sk_buff *skb)
|
|
{
|
|
struct llc_sap_state_ev *ev = llc_sap_ev(skb);
|
|
|
|
return ev->type == LLC_SAP_EV_TYPE_SIMPLE &&
|
|
ev->prim_type == LLC_SAP_EV_ACTIVATION_REQ ? 0 : 1;
|
|
}
|
|
|
|
int llc_sap_ev_rx_ui(struct llc_sap *sap, struct sk_buff *skb)
|
|
{
|
|
struct llc_sap_state_ev *ev = llc_sap_ev(skb);
|
|
struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb);
|
|
|
|
return ev->type == LLC_SAP_EV_TYPE_PDU && LLC_PDU_IS_CMD(pdu) &&
|
|
LLC_PDU_TYPE_IS_U(pdu) &&
|
|
LLC_U_PDU_CMD(pdu) == LLC_1_PDU_CMD_UI ? 0 : 1;
|
|
}
|
|
|
|
int llc_sap_ev_unitdata_req(struct llc_sap *sap, struct sk_buff *skb)
|
|
{
|
|
struct llc_sap_state_ev *ev = llc_sap_ev(skb);
|
|
|
|
return ev->type == LLC_SAP_EV_TYPE_PRIM &&
|
|
ev->prim == LLC_DATAUNIT_PRIM &&
|
|
ev->prim_type == LLC_PRIM_TYPE_REQ ? 0 : 1;
|
|
|
|
}
|
|
|
|
int llc_sap_ev_xid_req(struct llc_sap *sap, struct sk_buff *skb)
|
|
{
|
|
struct llc_sap_state_ev *ev = llc_sap_ev(skb);
|
|
|
|
return ev->type == LLC_SAP_EV_TYPE_PRIM &&
|
|
ev->prim == LLC_XID_PRIM &&
|
|
ev->prim_type == LLC_PRIM_TYPE_REQ ? 0 : 1;
|
|
}
|
|
|
|
int llc_sap_ev_rx_xid_c(struct llc_sap *sap, struct sk_buff *skb)
|
|
{
|
|
struct llc_sap_state_ev *ev = llc_sap_ev(skb);
|
|
struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb);
|
|
|
|
return ev->type == LLC_SAP_EV_TYPE_PDU && LLC_PDU_IS_CMD(pdu) &&
|
|
LLC_PDU_TYPE_IS_U(pdu) &&
|
|
LLC_U_PDU_CMD(pdu) == LLC_1_PDU_CMD_XID ? 0 : 1;
|
|
}
|
|
|
|
int llc_sap_ev_rx_xid_r(struct llc_sap *sap, struct sk_buff *skb)
|
|
{
|
|
struct llc_sap_state_ev *ev = llc_sap_ev(skb);
|
|
struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb);
|
|
|
|
return ev->type == LLC_SAP_EV_TYPE_PDU && LLC_PDU_IS_RSP(pdu) &&
|
|
LLC_PDU_TYPE_IS_U(pdu) &&
|
|
LLC_U_PDU_RSP(pdu) == LLC_1_PDU_CMD_XID ? 0 : 1;
|
|
}
|
|
|
|
int llc_sap_ev_test_req(struct llc_sap *sap, struct sk_buff *skb)
|
|
{
|
|
struct llc_sap_state_ev *ev = llc_sap_ev(skb);
|
|
|
|
return ev->type == LLC_SAP_EV_TYPE_PRIM &&
|
|
ev->prim == LLC_TEST_PRIM &&
|
|
ev->prim_type == LLC_PRIM_TYPE_REQ ? 0 : 1;
|
|
}
|
|
|
|
int llc_sap_ev_rx_test_c(struct llc_sap *sap, struct sk_buff *skb)
|
|
{
|
|
struct llc_sap_state_ev *ev = llc_sap_ev(skb);
|
|
struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb);
|
|
|
|
return ev->type == LLC_SAP_EV_TYPE_PDU && LLC_PDU_IS_CMD(pdu) &&
|
|
LLC_PDU_TYPE_IS_U(pdu) &&
|
|
LLC_U_PDU_CMD(pdu) == LLC_1_PDU_CMD_TEST ? 0 : 1;
|
|
}
|
|
|
|
int llc_sap_ev_rx_test_r(struct llc_sap *sap, struct sk_buff *skb)
|
|
{
|
|
struct llc_sap_state_ev *ev = llc_sap_ev(skb);
|
|
struct llc_pdu_un *pdu = llc_pdu_un_hdr(skb);
|
|
|
|
return ev->type == LLC_SAP_EV_TYPE_PDU && LLC_PDU_IS_RSP(pdu) &&
|
|
LLC_PDU_TYPE_IS_U(pdu) &&
|
|
LLC_U_PDU_RSP(pdu) == LLC_1_PDU_CMD_TEST ? 0 : 1;
|
|
}
|
|
|
|
int llc_sap_ev_deactivation_req(struct llc_sap *sap, struct sk_buff *skb)
|
|
{
|
|
struct llc_sap_state_ev *ev = llc_sap_ev(skb);
|
|
|
|
return ev->type == LLC_SAP_EV_TYPE_SIMPLE &&
|
|
ev->prim_type == LLC_SAP_EV_DEACTIVATION_REQ ? 0 : 1;
|
|
}
|