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ieee802154: Fix EUI-64 station address validation.

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Refuse to allow setting an EUI-64 group address as an interface
address, as those are not valid station addresses.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Acked-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Lennert Buytenhek 2015-05-28 15:38:43 +03:00 committed by Marcel Holtmann
parent 3b369bd212
commit daf4e2c892
2 changed files with 6 additions and 8 deletions
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10
include/linux/ieee802154.h
View File

@ -225,15 +225,13 @@ static inline bool ieee802154_is_valid_psdu_len(const u8 len)
* ieee802154_is_valid_psdu_len - check if extended addr is valid
* @addr: extended addr to check
*/
static inline bool ieee802154_is_valid_extended_addr(const __le64 addr)
static inline bool ieee802154_is_valid_extended_unicast_addr(const __le64 addr)
{
/* These EUI-64 addresses are reserved by IEEE. 0xffffffffffffffff
* is used internally as extended to short address broadcast mapping.
* This is currently a workaround because neighbor discovery can't
* deal with short addresses types right now.
/* Bail out if the address is all zero, or if the group
* address bit is set.
*/
return ((addr != cpu_to_le64(0x0000000000000000ULL)) &&
(addr != cpu_to_le64(0xffffffffffffffffULL)));
!(addr & cpu_to_le64(0x0100000000000000ULL)));
}
/**

4
net/mac802154/iface.c
View File

@ -126,7 +126,7 @@ static int mac802154_wpan_mac_addr(struct net_device *dev, void *p)
return -EBUSY;
ieee802154_be64_to_le64(&extended_addr, addr->sa_data);
if (!ieee802154_is_valid_extended_addr(extended_addr))
if (!ieee802154_is_valid_extended_unicast_addr(extended_addr))
return -EINVAL;
memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
@ -539,7 +539,7 @@ ieee802154_if_add(struct ieee802154_local *local, const char *name,
switch (type) {
case NL802154_IFTYPE_NODE:
ndev->type = ARPHRD_IEEE802154;
if (ieee802154_is_valid_extended_addr(extended_addr))
if (ieee802154_is_valid_extended_unicast_addr(extended_addr))
ieee802154_le64_to_be64(ndev->dev_addr, &extended_addr);
else
memcpy(ndev->dev_addr, ndev->perm_addr,