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eepro100: Fix multicast support 

* Handling of multicast list was missing.
* Multicast all was missing.
* Promiscuous mode for multicast frames was wrong.

This patch is a step to synchronize my maintainer version
of eepro100.c (git://repo.or.cz/qemu/ar7.git) with the
version integrated in QEMU.

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Stefan Weil 2009-12-20 16:52:24 +01:00 committed by Anthony Liguori
parent f3a52e503b
commit 7b8737de03
1 changed files with 39 additions and 13 deletions
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52
hw/eepro100.c
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@ -140,7 +140,7 @@ typedef struct {
uint16_t status;
uint16_t command;
uint32_t link; /* void * */
uint32_t tx_desc_addr; /* transmit buffer decsriptor array address. */
uint32_t tbd_array_addr; /* transmit buffer descriptor array address. */
uint16_t tcb_bytes; /* transmit command block byte count (in lower 14 bits */
uint8_t tx_threshold; /* transmit threshold */
uint8_t tbd_count; /* TBD number */
@ -267,7 +267,7 @@ static void stl_le_phys(target_phys_addr_t addr, uint32_t val)
/* From FreeBSD */
/* XXX: optimize */
static int compute_mcast_idx(const uint8_t * ep)
static unsigned compute_mcast_idx(const uint8_t * ep)
{
uint32_t crc;
int carry, i, j;
@ -285,7 +285,7 @@ static int compute_mcast_idx(const uint8_t * ep)
}
}
}
return (crc >> 26);
return (crc & BITS(7, 2)) >> 2;
}
#if defined(DEBUG_EEPRO100)
@ -648,6 +648,8 @@ static void nic_reset(void *opaque)
{
EEPRO100State *s = opaque;
TRACE(OTHER, logout("%p\n", s));
/* TODO: Clearing of multicast table for selective reset, too? */
memset(&s->mult[0], 0, sizeof(s->mult));
nic_selective_reset(s);
}
@ -767,7 +769,7 @@ static void dump_statistics(EEPRO100State * s)
static void tx_command(EEPRO100State *s)
{
uint32_t tbd_array = le32_to_cpu(s->tx.tx_desc_addr);
uint32_t tbd_array = le32_to_cpu(s->tx.tbd_array_addr);
uint16_t tcb_bytes = (le16_to_cpu(s->tx.tcb_bytes) & 0x3fff);
/* Sends larger than MAX_ETH_FRAME_SIZE are allowed, up to 2600 bytes. */
uint8_t buf[2600];
@ -849,6 +851,22 @@ static void tx_command(EEPRO100State *s)
//~ eepro100_cx_interrupt(s);
}
static void set_multicast_list(EEPRO100State *s)
{
uint16_t multicast_count = s->tx.tbd_array_addr & BITS(13, 0);
uint16_t i;
memset(&s->mult[0], 0, sizeof(s->mult));
TRACE(OTHER, logout("multicast list, multicast count = %u\n", multicast_count));
for (i = 0; i < multicast_count; i += 6) {
uint8_t multicast_addr[6];
cpu_physical_memory_read(s->cb_address + 10 + i, multicast_addr, 6);
TRACE(OTHER, logout("multicast entry %s\n", nic_dump(multicast_addr, 6)));
unsigned mcast_idx = compute_mcast_idx(multicast_addr);
assert(mcast_idx < 64);
s->mult[mcast_idx >> 3] |= (1 << (mcast_idx & 7));
}
}
static void action_command(EEPRO100State *s)
{
for (;;) {
@ -881,7 +899,7 @@ static void action_command(EEPRO100State *s)
TRACE(OTHER, logout("configuration: %s\n", nic_dump(&s->configuration[0], 16)));
break;
case CmdMulticastList:
//~ missing("multicast list");
set_multicast_list(s);
break;
case CmdTx:
if (bit_nc) {
@ -1664,17 +1682,25 @@ static ssize_t nic_receive(VLANClientState *nc, const uint8_t * buf, size_t size
/* Broadcast frame. */
TRACE(RXTX, logout("%p received broadcast, len=%zu\n", s, size));
rfd_status |= 0x0002;
} else if (buf[0] & 0x01) { // !!!
} else if (buf[0] & 0x01) {
/* Multicast frame. */
TRACE(RXTX, logout("%p received multicast, len=%zu\n", s, size));
/* TODO: check multicast all bit. */
TRACE(RXTX, logout("%p received multicast, len=%zu,%s\n", s, size, nic_dump(buf, size)));
if (s->configuration[21] & BIT(3)) {
missing("Multicast All bit");
}
int mcast_idx = compute_mcast_idx(buf);
if (!(s->mult[mcast_idx >> 3] & (1 << (mcast_idx & 7)))) {
return size;
/* Multicast all bit is set, receive all multicast frames. */
} else {
unsigned mcast_idx = compute_mcast_idx(buf);
assert(mcast_idx < 64);
if (s->mult[mcast_idx >> 3] & (1 << (mcast_idx & 7))) {
/* Multicast frame is allowed in hash table. */
} else if (s->configuration[15] & 1) {
/* Promiscuous: receive all. */
rfd_status |= 0x0004;
} else {
TRACE(RXTX, logout("%p multicast ignored\n", s));
return -1;
}
}
/* TODO: Next not for promiscuous mode? */
rfd_status |= 0x0002;
} else if (s->configuration[15] & 1) {
/* Promiscuous: receive all. */