mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 11:20:49 +07:00
ebc3f64b86
This patch is a follow up to patch 1 regarding "Selective Sub Address matching with call user data". It allows use of the Fast-Select-Acceptance optional user facility for X.25. This patch just implements fast select with no restriction on response (NRR). What this means (according to ITU-T Recomendation 10/96 section 6.16) is that if in an incoming call packet, the relevant facility bits are set for fast-select-NRR, then the called DTE can issue a direct response to the incoming packet using a call-accepted packet that contains call-user-data. This patch allows such a response. The called DTE can also respond with a clear-request packet that contains call-user-data. However, this feature is currently not implemented by the patch. How is Fast Select Acceptance used? By default, the system does not allow fast select acceptance (as before). To enable a response to fast select acceptance, After a listen socket in created and bound as follows socket(AF_X25, SOCK_SEQPACKET, 0); bind(call_soc, (struct sockaddr *)&locl_addr, sizeof(locl_addr)); but before a listen system call is made, the following ioctl should be used. ioctl(call_soc,SIOCX25CALLACCPTAPPRV); Now the listen system call can be made listen(call_soc, 4); After this, an incoming-call packet will be accepted, but no call-accepted packet will be sent back until the following system call is made on the socket that accepts the call ioctl(vc_soc,SIOCX25SENDCALLACCPT); The network (or cisco xot router used for testing here) will allow the application server's call-user-data in the call-accepted packet, provided the call-request was made with Fast-select NRR. Signed-off-by: Shaun Pereira <spereira@tusc.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
125 lines
2.8 KiB
C
125 lines
2.8 KiB
C
/*
|
|
* These are the public elements of the Linux kernel X.25 implementation.
|
|
*
|
|
* History
|
|
* mar/20/00 Daniela Squassoni Disabling/enabling of facilities
|
|
* negotiation.
|
|
* apr/02/05 Shaun Pereira Selective sub address matching with
|
|
* call user data
|
|
*/
|
|
|
|
#ifndef X25_KERNEL_H
|
|
#define X25_KERNEL_H
|
|
|
|
#define SIOCX25GSUBSCRIP (SIOCPROTOPRIVATE + 0)
|
|
#define SIOCX25SSUBSCRIP (SIOCPROTOPRIVATE + 1)
|
|
#define SIOCX25GFACILITIES (SIOCPROTOPRIVATE + 2)
|
|
#define SIOCX25SFACILITIES (SIOCPROTOPRIVATE + 3)
|
|
#define SIOCX25GCALLUSERDATA (SIOCPROTOPRIVATE + 4)
|
|
#define SIOCX25SCALLUSERDATA (SIOCPROTOPRIVATE + 5)
|
|
#define SIOCX25GCAUSEDIAG (SIOCPROTOPRIVATE + 6)
|
|
#define SIOCX25SCUDMATCHLEN (SIOCPROTOPRIVATE + 7)
|
|
#define SIOCX25CALLACCPTAPPRV (SIOCPROTOPRIVATE + 8)
|
|
#define SIOCX25SENDCALLACCPT (SIOCPROTOPRIVATE + 9)
|
|
|
|
/*
|
|
* Values for {get,set}sockopt.
|
|
*/
|
|
#define X25_QBITINCL 1
|
|
|
|
/*
|
|
* X.25 Packet Size values.
|
|
*/
|
|
#define X25_PS16 4
|
|
#define X25_PS32 5
|
|
#define X25_PS64 6
|
|
#define X25_PS128 7
|
|
#define X25_PS256 8
|
|
#define X25_PS512 9
|
|
#define X25_PS1024 10
|
|
#define X25_PS2048 11
|
|
#define X25_PS4096 12
|
|
|
|
/*
|
|
* An X.121 address, it is held as ASCII text, null terminated, up to 15
|
|
* digits and a null terminator.
|
|
*/
|
|
struct x25_address {
|
|
char x25_addr[16];
|
|
};
|
|
|
|
/*
|
|
* Linux X.25 Address structure, used for bind, and connect mostly.
|
|
*/
|
|
struct sockaddr_x25 {
|
|
sa_family_t sx25_family; /* Must be AF_X25 */
|
|
struct x25_address sx25_addr; /* X.121 Address */
|
|
};
|
|
|
|
/*
|
|
* DTE/DCE subscription options.
|
|
*
|
|
* As this is missing lots of options, user should expect major
|
|
* changes of this structure in 2.5.x which might break compatibilty.
|
|
* The somewhat ugly dimension 200-sizeof() is needed to maintain
|
|
* backward compatibility.
|
|
*/
|
|
struct x25_subscrip_struct {
|
|
char device[200-sizeof(unsigned long)];
|
|
unsigned long global_facil_mask; /* 0 to disable negotiation */
|
|
unsigned int extended;
|
|
};
|
|
|
|
/* values for above global_facil_mask */
|
|
|
|
#define X25_MASK_REVERSE 0x01
|
|
#define X25_MASK_THROUGHPUT 0x02
|
|
#define X25_MASK_PACKET_SIZE 0x04
|
|
#define X25_MASK_WINDOW_SIZE 0x08
|
|
|
|
|
|
|
|
/*
|
|
* Routing table control structure.
|
|
*/
|
|
struct x25_route_struct {
|
|
struct x25_address address;
|
|
unsigned int sigdigits;
|
|
char device[200];
|
|
};
|
|
|
|
/*
|
|
* Facilities structure.
|
|
*/
|
|
struct x25_facilities {
|
|
unsigned int winsize_in, winsize_out;
|
|
unsigned int pacsize_in, pacsize_out;
|
|
unsigned int throughput;
|
|
unsigned int reverse;
|
|
};
|
|
|
|
/*
|
|
* Call User Data structure.
|
|
*/
|
|
struct x25_calluserdata {
|
|
unsigned int cudlength;
|
|
unsigned char cuddata[128];
|
|
};
|
|
|
|
/*
|
|
* Call clearing Cause and Diagnostic structure.
|
|
*/
|
|
struct x25_causediag {
|
|
unsigned char cause;
|
|
unsigned char diagnostic;
|
|
};
|
|
|
|
/*
|
|
* Further optional call user data match length selection
|
|
*/
|
|
struct x25_subaddr {
|
|
unsigned int cudmatchlength;
|
|
};
|
|
|
|
#endif
|