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Set up multicast (input) filter on qt (DELQA-Turbo).

This commit is contained in:
rhialto 2021-12-20 17:12:41 +00:00
parent 23355edaeb
commit 195be17bb9
2 changed files with 81 additions and 16 deletions
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71
sys/dev/qbus/if_qt.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: if_qt.c,v 1.25 2020/01/29 05:57:21 thorpej Exp $ */
/* $NetBSD: if_qt.c,v 1.26 2021/12/20 17:12:41 rhialto Exp $ */
/*
* Copyright (c) 1992 Steven M. Schultz
* All rights reserved.
@ -80,7 +80,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_qt.c,v 1.25 2020/01/29 05:57:21 thorpej Exp $");
__KERNEL_RCSID(0, "$NetBSD: if_qt.c,v 1.26 2021/12/20 17:12:41 rhialto Exp $");
#include "opt_inet.h"
@ -162,6 +162,7 @@ struct qt_softc {
static int qtmatch(device_t, cfdata_t, void *);
static void qtattach(device_t, device_t, void *);
static void lance_setladrf(struct ethercom *ec, uint16_t *af);
static void qtintr(void *);
static int qtinit(struct ifnet *);
static int qtioctl(struct ifnet *, u_long, void *);
@ -332,6 +333,67 @@ qtturbo(struct qt_softc *sc)
return(1);
}
#define ETHER_CMP(a,b) memcmp((a), (b), 6)
/*
* Set up the logical address filter.
*/
void
lance_setladrf(struct ethercom *ec, uint16_t *af)
{
struct ifnet *ifp = &ec->ec_if;
struct ether_multi *enm;
uint32_t crc;
struct ether_multistep step;
/*
* Set up multicast address filter by passing all multicast addresses
* through a crc generator, and then using the high order 6 bits as an
* index into the 64 bit logical address filter. The high order bit
* selects the word, while the rest of the bits select the bit within
* the word.
*/
if (ifp->if_flags & IFF_PROMISC)
goto allmulti;
af[0] = af[1] = af[2] = af[3] = 0x0000;
ETHER_LOCK(ec);
ETHER_FIRST_MULTI(step, ec, enm);
while (enm != NULL) {
if (ETHER_CMP(enm->enm_addrlo, enm->enm_addrhi)) {
/*
* We must listen to a range of multicast addresses.
* For now, just accept all multicasts, rather than
* trying to set only those filter bits needed to match
* the range. (At this time, the only use of address
* ranges is for IP multicast routing, for which the
* range is big enough to require all bits set.)
*/
ETHER_UNLOCK(ec);
goto allmulti;
}
crc = ether_crc32_le(enm->enm_addrlo, ETHER_ADDR_LEN);
/* Just want the 6 most significant bits. */
crc >>= 26;
/* Set the corresponding bit in the filter. */
af[crc >> 4] |= 1 << (crc & 0xf);
ETHER_NEXT_MULTI(step, enm);
}
ETHER_UNLOCK(ec);
ifp->if_flags &= ~IFF_ALLMULTI;
return;
allmulti:
ifp->if_flags |= IFF_ALLMULTI;
af[0] = af[1] = af[2] = af[3] = 0xffff;
}
int
qtinit(struct ifnet *ifp)
{
@ -388,7 +450,10 @@ qtinit(struct ifnet *ifp)
}
iniblk = &sc->sc_ib->qc_init;
iniblk->mode = ifp->if_flags & IFF_PROMISC ? INIT_MODE_PRO : 0;
/*
* The multicast filter works "like LANCE".
*/
lance_setladrf(&sc->is_ec, iniblk->laddr);
/*
* Now initialize the receive ring descriptors. Because this routine can be

26
sys/dev/qbus/if_qtreg.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: if_qtreg.h,v 1.5 2005/12/11 12:23:29 christos Exp $ */
/* $NetBSD: if_qtreg.h,v 1.6 2021/12/20 17:12:41 rhialto Exp $ */
/*
* Copyright (c) 1992 Steven M. Schultz
* All rights reserved.
@ -207,18 +207,18 @@
struct qt_init
{
short mode;
u_char paddr[6]; /* 48 bit physical address */
u_char laddr[8]; /* 64 bit logical address filter */
u_short rx_lo; /* low 16 bits of receive ring addr */
u_short rx_hi; /* high 6 bits of receive ring addr */
u_short tx_lo; /* low 16 bits of transmit ring addr */
u_short tx_hi; /* high 6 bits of transmit ring addr */
u_short options;
u_short vector;
u_short hit;
char passwd[6];
char pad[4]; /* even on 40 byte for alignment */
int16_t mode;
u_char paddr[6]; /* 48 bit physical address */
uint16_t laddr[4]; /* 64 bit logical address filter */
uint16_t rx_lo; /* low 16 bits of receive ring addr */
uint16_t rx_hi; /* high 6 bits of receive ring addr */
uint16_t tx_lo; /* low 16 bits of transmit ring addr */
uint16_t tx_hi; /* high 6 bits of transmit ring addr */
uint16_t options;
uint16_t vector;
uint16_t hit;
char passwd[6];
char pad[4]; /* even on 40 byte for alignment */
};
#define INIT_MODE_PRO 0x8000 /* Promiscuous mode */