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Delete the if_private[] array in struct ifnet; this turned out to be

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of limited utility.  In their place, add bunch of pointers
which will eventually be needed by the polled-interrupt scheme we're working
here.  (It will probably be a while before the code is written and
committed here.)  At the same time, a `void *if_softc' field
was added to the beginning of the structure to make certain driver
writers happier.

The practical upshot of all this is that you need to
recompile utilities such as netstat which manipulate struct ifnet.
This commit is contained in:
Garrett Wollman 1996-01-26 22:09:54 +00:00
parent ce5b7be823
commit 7c399a896a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=13641
1 changed files with 19 additions and 4 deletions
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23
sys/net/if.h
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@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)if.h 8.1 (Berkeley) 6/10/93
* $Id: if.h,v 1.25 1995/12/09 20:47:09 phk Exp $
* $Id: if.h,v 1.26 1996/01/26 09:29:17 phk Exp $
*/
#ifndef _NET_IF_H_
@ -117,13 +117,12 @@ struct ifqueue {
int ifq_drops;
};
#define IF_NPRIVATE 4
/*
* Structure describing information about an interface
* which may be of interest to management entities.
*/
struct ifnet {
void *if_softc; /* pointer to driver state */
char *if_name; /* name, e.g. ``en'' or ``lo'' */
struct ifnet *if_next; /* all struct ifnets are chained */
struct ifaddr *if_addrlist; /* linked list of addresses per if */
@ -133,6 +132,8 @@ struct ifnet {
short if_unit; /* sub-unit for lower level driver */
short if_timer; /* time 'til if_watchdog called */
short if_flags; /* up/down, broadcast, etc. */
u_char if_recvquota, if_sendquota; /* quotas for send, receive */
u_char if_ipending; /* interrupts pending */
struct if_data if_data;
/* procedure handles */
int (*if_output) /* output routine (enqueue) */
@ -146,8 +147,16 @@ struct ifnet {
__P((struct ifnet *, int, caddr_t));
void (*if_watchdog) /* timer routine */
__P((struct ifnet *));
void (*if_poll_recv) /* polled receive routine */
__P((struct ifnet *, int *));
void (*if_poll_xmit) /* polled transmit routine */
__P((struct ifnet *, int *));
void (*if_poll_intren) /* polled interrupt reenable routine */
__P((struct ifnet *));
void (*if_poll_slowinput) /* input routine for slow devices */
__P((struct ifnet *, struct mbuf *));
struct ifqueue if_snd; /* output queue */
void *if_private[IF_NPRIVATE]; /* opaque data for various clients */
struct ifqueue *if_poll_slowq; /* input queue for slow devices */
};
#define if_mtu if_data.ifi_mtu
#define if_type if_data.ifi_type
@ -203,6 +212,12 @@ struct ifnet {
#define IFP_10BASET 2
/* etc. */
/*
* Bit values in if_ipending
*/
#define IFI_RECV 1 /* I want to receive */
#define IFI_XMIT 2 /* I want to transmit */
/*
* Output queues (ifp->if_snd) and internetwork datagram level (pup level 1)
* input routines have queues of messages stored on ifqueue structures