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ieee802154: add address struct with proper endiannes and some operations

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Add a replacement ieee802154_addr struct with proper endianness on
fields. Short address fields are stored as __le16 as on the network,
extended (EUI64) addresses are __le64 as opposed to the u8[8] format
used previously. This disconnect with the netdev address, which is
stored as big-endian u8[8], is intentional.

Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Phoebe Buckheister 2014-03-14 21:23:58 +01:00 committed by David S. Miller
parent 376b7bd355
commit 46ef0eb3ea
1 changed files with 72 additions and 0 deletions
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72
include/net/ieee802154_netdev.h
View File

@ -29,6 +29,78 @@
#include <net/af_ieee802154.h>
struct ieee802154_addr {
u8 mode;
__le16 pan_id;
union {
__le16 short_addr;
__le64 extended_addr;
};
};
static inline bool ieee802154_addr_equal(const struct ieee802154_addr *a1,
const struct ieee802154_addr *a2)
{
if (a1->pan_id != a2->pan_id || a1->mode != a2->mode)
return false;
if ((a1->mode == IEEE802154_ADDR_LONG &&
a1->extended_addr != a2->extended_addr) ||
(a1->mode == IEEE802154_ADDR_SHORT &&
a1->short_addr != a2->short_addr))
return false;
return true;
}
static inline __le64 ieee802154_devaddr_from_raw(const void *raw)
{
u64 temp;
memcpy(&temp, raw, IEEE802154_ADDR_LEN);
return (__force __le64)swab64(temp);
}
static inline void ieee802154_devaddr_to_raw(void *raw, __le64 addr)
{
u64 temp = swab64((__force u64)addr);
memcpy(raw, &temp, IEEE802154_ADDR_LEN);
}
static inline void ieee802154_addr_from_sa(struct ieee802154_addr *a,
const struct ieee802154_addr_sa *sa)
{
a->mode = sa->addr_type;
a->pan_id = cpu_to_le16(sa->pan_id);
switch (a->mode) {
case IEEE802154_ADDR_SHORT:
a->short_addr = cpu_to_le16(sa->short_addr);
break;
case IEEE802154_ADDR_LONG:
a->extended_addr = ieee802154_devaddr_from_raw(sa->hwaddr);
break;
}
}
static inline void ieee802154_addr_to_sa(struct ieee802154_addr_sa *sa,
const struct ieee802154_addr *a)
{
sa->addr_type = a->mode;
sa->pan_id = le16_to_cpu(a->pan_id);
switch (a->mode) {
case IEEE802154_ADDR_SHORT:
sa->short_addr = le16_to_cpu(a->short_addr);
break;
case IEEE802154_ADDR_LONG:
ieee802154_devaddr_to_raw(sa->hwaddr, a->extended_addr);
break;
}
}
struct ieee802154_frag_info {
__be16 d_tag;
u16 d_size;