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Merge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into staging

# gpg: Signature made Mon 07 Dec 2015 14:06:07 GMT using RSA key ID 398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 215D 46F4 8246 689E C77F  3562 EF04 965B 398D 6211

* remotes/jasowang/tags/net-pull-request:
  lan9118: log and ignore access to invalid registers, rather than aborting
  lan9118: fix emulation of MAC address loaded bit in E2P_CMD register
  vmxnet3: silence warning
  pcnet: fix rx buffer overflow(CVE-2015-7512)
  net: pcnet: add check to validate receive data size(CVE-2015-7504)
  e1000: fix hang of win2k12 shutdown with flood ping

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2015-12-07 14:18:31 +00:00
parent a5582eac15 52b4bb7383
commit 84942979de
4 changed files with 29 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
hw/net/e1000.c
View File

@ -447,6 +447,11 @@ static void e1000_reset(void *opaque)
e1000_link_down(d);
}
/* Throttle interrupts to prevent guest (e.g Win 2012) from
* reinjecting interrupts endlessly. TODO: fix non ITR case.
*/
d->mac_reg[ITR] = 250;
/* Some guests expect pre-initialized RAH/RAL (AddrValid flag + MACaddr) */
d->mac_reg[RA] = 0;
d->mac_reg[RA + 1] = E1000_RAH_AV;

20
hw/net/lan9118.c
View File

@ -56,6 +56,8 @@ do { fprintf(stderr, "lan9118: error: " fmt , ## __VA_ARGS__);} while (0)
#define CSR_E2P_CMD 0xb0
#define CSR_E2P_DATA 0xb4
#define E2P_CMD_MAC_ADDR_LOADED 0x100
/* IRQ_CFG */
#define IRQ_INT 0x00001000
#define IRQ_EN 0x00000100
@ -352,14 +354,14 @@ static void lan9118_reload_eeprom(lan9118_state *s)
{
int i;
if (s->eeprom[0] != 0xa5) {
s->e2p_cmd &= ~0x10;
s->e2p_cmd &= ~E2P_CMD_MAC_ADDR_LOADED;
DPRINTF("MACADDR load failed\n");
return;
}
for (i = 0; i < 6; i++) {
s->conf.macaddr.a[i] = s->eeprom[i + 1];
}
s->e2p_cmd |= 0x10;
s->e2p_cmd |= E2P_CMD_MAC_ADDR_LOADED;
DPRINTF("MACADDR loaded from eeprom\n");
lan9118_mac_changed(s);
}
@ -902,7 +904,8 @@ static void do_mac_write(lan9118_state *s, int reg, uint32_t val)
*/
break;
default:
hw_error("lan9118: Unimplemented MAC register write: %d = 0x%x\n",
qemu_log_mask(LOG_GUEST_ERROR,
"lan9118: Unimplemented MAC register write: %d = 0x%x\n",
s->mac_cmd & 0xf, val);
}
}
@ -930,14 +933,16 @@ static uint32_t do_mac_read(lan9118_state *s, int reg)
case MAC_FLOW:
return s->mac_flow;
default:
hw_error("lan9118: Unimplemented MAC register read: %d\n",
qemu_log_mask(LOG_GUEST_ERROR,
"lan9118: Unimplemented MAC register read: %d\n",
s->mac_cmd & 0xf);
return 0;
}
}
static void lan9118_eeprom_cmd(lan9118_state *s, int cmd, int addr)
{
s->e2p_cmd = (s->e2p_cmd & 0x10) | (cmd << 28) | addr;
s->e2p_cmd = (s->e2p_cmd & E2P_CMD_MAC_ADDR_LOADED) | (cmd << 28) | addr;
switch (cmd) {
case 0:
s->e2p_data = s->eeprom[addr];
@ -1128,7 +1133,8 @@ static void lan9118_writel(void *opaque, hwaddr offset,
break;
default:
hw_error("lan9118_write: Bad reg 0x%x = %x\n", (int)offset, (int)val);
qemu_log_mask(LOG_GUEST_ERROR, "lan9118_write: Bad reg 0x%x = %x\n",
(int)offset, (int)val);
break;
}
lan9118_update(s);
@ -1246,7 +1252,7 @@ static uint64_t lan9118_readl(void *opaque, hwaddr offset,
case CSR_E2P_DATA:
return s->e2p_data;
}
hw_error("lan9118_read: Bad reg 0x%x\n", (int)offset);
qemu_log_mask(LOG_GUEST_ERROR, "lan9118_read: Bad reg 0x%x\n", (int)offset);
return 0;
}

14
hw/net/pcnet.c
View File

@ -1064,6 +1064,12 @@ ssize_t pcnet_receive(NetClientState *nc, const uint8_t *buf, size_t size_)
int pktcount = 0;
if (!s->looptest) {
if (size > 4092) {
#ifdef PCNET_DEBUG_RMD
fprintf(stderr, "pcnet: truncates rx packet.\n");
#endif
size = 4092;
}
memcpy(src, buf, size);
/* no need to compute the CRC */
src[size] = 0;
@ -1084,7 +1090,7 @@ ssize_t pcnet_receive(NetClientState *nc, const uint8_t *buf, size_t size_)
uint32_t fcs = ~0;
uint8_t *p = src;
while (p != &src[size-4])
while (p != &src[size])
CRC(fcs, *p++);
crc_err = (*(uint32_t *)p != htonl(fcs));
}
@ -1233,8 +1239,10 @@ static void pcnet_transmit(PCNetState *s)
bcnt = 4096 - GET_FIELD(tmd.length, TMDL, BCNT);
/* if multi-tmd packet outsizes s->buffer then skip it silently.
Note: this is not what real hw does */
if (s->xmit_pos + bcnt > sizeof(s->buffer)) {
* Note: this is not what real hw does.
* Last four bytes of s->buffer are used to store CRC FCS code.
*/
if (s->xmit_pos + bcnt > sizeof(s->buffer) - 4) {
s->xmit_pos = -1;
goto txdone;
}

1
hw/net/vmxnet3.c
View File

@ -2015,7 +2015,6 @@ static bool vmxnet3_peer_has_vnet_hdr(VMXNET3State *s)
return true;
}
VMW_WRPRN("Peer has no virtio extension. Task offloads will be emulated.");
return false;
}