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Break out the relevant fields from struct sppp into a struct

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sppp_parms that are needed for the SPPPIO[GS]DEFS ioctl commands.
This allows it to keep struct sppp inside #ifdef _KERNEL (where it
belongs), and prevents userland programs that wish to include
<net/if_sppp.h> from including the earth, the hell, and the universe
before the are able to resolve all the kernel-internal stuff that's in
struct sppp.

Discussed with:	hm
MFC after:	1 month
This commit is contained in:
Joerg Wunsch 2001-12-27 22:38:50 +00:00
parent 464af731bc
commit 39cb697c8c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=88558
2 changed files with 50 additions and 26 deletions
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68
sys/net/if_sppp.h
View File

@ -85,6 +85,48 @@ enum ppp_phase {
PHASE_AUTHENTICATE, PHASE_NETWORK
};
#define PP_MTU 1500 /* default/minimal MRU */
#define PP_MAX_MRU 2048 /* maximal MRU we want to negotiate */
/*
* This is a cut down struct sppp (see below) that can easily be
* exported to/ imported from userland without the need to include
* dozens of kernel-internal header files. It is used by the
* SPPPIO[GS]DEFS ioctl commands below.
*/
struct sppp_parms {
enum ppp_phase pp_phase; /* phase we're currently in */
int enable_vj; /* VJ header compression enabled */
struct slcp lcp; /* LCP params */
struct sipcp ipcp; /* IPCP params */
struct sipcp ipv6cp; /* IPv6CP params */
struct sauth myauth; /* auth params, i'm peer */
struct sauth hisauth; /* auth params, i'm authenticator */
};
/*
* Definitions to pass struct sppp_parms data down into the kernel
* using the SIOC[SG]IFGENERIC ioctl interface.
*
* In order to use this, create a struct spppreq, fill in the cmd
* field with SPPPIOGDEFS, and put the address of this structure into
* the ifr_data portion of a struct ifreq. Pass this struct to a
* SIOCGIFGENERIC ioctl. Then replace the cmd field by SPPPIOSDEFS,
* modify the defs field as desired, and pass the struct ifreq now
* to a SIOCSIFGENERIC ioctl.
*/
#define SPPPIOGDEFS ((caddr_t)(('S' << 24) + (1 << 16) +\
sizeof(struct sppp_parms)))
#define SPPPIOSDEFS ((caddr_t)(('S' << 24) + (2 << 16) +\
sizeof(struct sppp_parms)))
struct spppreq {
int cmd;
struct sppp_parms defs;
};
#ifdef _KERNEL
struct sppp {
/* NB: pp_if _must_ be first */
struct ifnet pp_if; /* network interface data */
@ -143,36 +185,12 @@ struct sppp {
int pp_loweri;
};
/* bits for pp_flags */
#define PP_KEEPALIVE 0x01 /* use keepalive protocol */
/* 0x04 was PP_TIMO */
#define PP_CALLIN 0x08 /* we are being called */
#define PP_NEEDAUTH 0x10 /* remote requested authentication */
#define PP_MTU 1500 /* default/minimal MRU */
#define PP_MAX_MRU 2048 /* maximal MRU we want to negotiate */
/*
* Definitions to pass struct sppp data down into the kernel using the
* SIOC[SG]IFGENERIC ioctl interface.
*
* In order to use this, create a struct spppreq, fill in the cmd
* field with SPPPIOGDEFS, and put the address of this structure into
* the ifr_data portion of a struct ifreq. Pass this struct to a
* SIOCGIFGENERIC ioctl. Then replace the cmd field by SPPPIOCDEFS,
* modify the defs field as desired, and pass the struct ifreq now
* to a SIOCSIFGENERIC ioctl.
*/
#define SPPPIOGDEFS ((caddr_t)(('S' << 24) + (1 << 16) + sizeof(struct sppp)))
#define SPPPIOSDEFS ((caddr_t)(('S' << 24) + (2 << 16) + sizeof(struct sppp)))
struct spppreq {
int cmd;
struct sppp defs;
};
#ifdef _KERNEL
void sppp_attach (struct ifnet *ifp);
void sppp_detach (struct ifnet *ifp);
void sppp_input (struct ifnet *ifp, struct mbuf *m);

8
sys/net/if_spppsubr.c
View File

@ -4938,7 +4938,13 @@ sppp_params(struct sppp *sp, u_long cmd, void *data)
* called by any user. No need to ever get PAP or
* CHAP secrets back to userland anyway.
*/
bcopy(sp, &spr.defs, sizeof(struct sppp));
spr.defs.pp_phase = sp->pp_phase;
spr.defs.enable_vj = sp->enable_vj;
spr.defs.lcp = sp->lcp;
spr.defs.ipcp = sp->ipcp;
spr.defs.ipv6cp = sp->ipv6cp;
spr.defs.myauth = sp->myauth;
spr.defs.hisauth = sp->hisauth;
bzero(spr.defs.myauth.secret, AUTHKEYLEN);
bzero(spr.defs.myauth.challenge, AUTHKEYLEN);
bzero(spr.defs.hisauth.secret, AUTHKEYLEN);