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{net,IB}/{rxe,usnic}: Utilize generic mac to eui32 function

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This logic seems to be duplicated in (at least) three separate files.
Move it to one place so code can be re-use.

Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
This commit is contained in:
Yuval Shaia
2017-03-14 16:01:57 +02:00
committed by Doug Ledford
parent a7c81326ca
commit 4d6f28591f
6 changed files with 27 additions and 44 deletions
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22
include/net/addrconf.h
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@@ -103,12 +103,24 @@ int addrconf_prefix_rcv_add_addr(struct net *net, struct net_device *dev,
u32 addr_flags, bool sllao, bool tokenized,
__u32 valid_lft, u32 prefered_lft);
static inline void addrconf_addr_eui48_base(u8 *eui, const char *const addr)
{
memcpy(eui, addr, 3);
eui[3] = 0xFF;
eui[4] = 0xFE;
memcpy(eui + 5, addr + 3, 3);
}
static inline void addrconf_addr_eui48(u8 *eui, const char *const addr)
{
addrconf_addr_eui48_base(eui, addr);
eui[0] ^= 2;
}
static inline int addrconf_ifid_eui48(u8 *eui, struct net_device *dev)
{
if (dev->addr_len != ETH_ALEN)
return -1;
memcpy(eui, dev->dev_addr, 3);
memcpy(eui + 5, dev->dev_addr + 3, 3);
/*
* The zSeries OSA network cards can be shared among various
@@ -123,14 +135,16 @@ static inline int addrconf_ifid_eui48(u8 *eui, struct net_device *dev)
* case. Hence the resulting interface identifier has local
* scope according to RFC2373.
*/
addrconf_addr_eui48_base(eui, dev->dev_addr);
if (dev->dev_id) {
eui[3] = (dev->dev_id >> 8) & 0xFF;
eui[4] = dev->dev_id & 0xFF;
} else {
eui[3] = 0xFF;
eui[4] = 0xFE;
eui[0] ^= 2;
}
return 0;
}