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authorStefan Weil <weil@mail.berlios.de>2009-12-20 16:52:24 +0100
committerAnthony Liguori <aliguori@us.ibm.com>2010-01-19 16:31:02 -0600
commit7b8737de0316397566c3d61de370ec7a3c24e86b (patch)
tree9199284d0384379aee4e18fde9830170dff2f737 /hw/eepro100.c
parentf3a52e503bcc314642ee3b8d637c15f6bc3e470c (diff)
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>
Diffstat (limited to 'hw/eepro100.c')
-rw-r--r--hw/eepro100.c52
1 files changed, 39 insertions, 13 deletions
diff --git a/hw/eepro100.c b/hw/eepro100.c
index 3467f77898..b33dbb85c8 100644
--- a/hw/eepro100.c
+++ b/hw/eepro100.c
@@ -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. */