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Date: Fri, 24 Feb 2017 14:14:38 +0200 From: Luiz Augusto von Dentz <luiz.dentz@...il.com> To: linux-bluetooth@...r.kernel.org Cc: patrik.flykt@...ux.intel.com, jukka.rissanen@...ux.intel.com, stefan@....samsung.com, aar@...gutronix.de, linux-wpan@...r.kernel.org, netdev@...r.kernel.org Subject: [PATCH v5 4/6] ipv6: addrconf: fix 48 bit 6lowpan autoconfiguration From: Alexander Aring <aar@...gutronix.de> This patch adds support for 48 bit 6LoWPAN address length autoconfiguration which is the case for BTLE 6LoWPAN. Signed-off-by: Alexander Aring <aar@...gutronix.de> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@...el.com> Reviewed-by: Stefan Schmidt <stefan@....samsung.com> --- net/ipv6/addrconf.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 3a2025f..7756640 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -2052,12 +2052,19 @@ static void addrconf_leave_anycast(struct inet6_ifaddr *ifp) __ipv6_dev_ac_dec(ifp->idev, &addr); } -static int addrconf_ifid_eui64(u8 *eui, struct net_device *dev) +static int addrconf_ifid_6lowpan(u8 *eui, struct net_device *dev) { - if (dev->addr_len != EUI64_ADDR_LEN) + switch (dev->addr_len) { + case ETH_ALEN: + return addrconf_ifid_eui48(eui, dev); + case EUI64_ADDR_LEN: + memcpy(eui, dev->dev_addr, EUI64_ADDR_LEN); + eui[0] ^= 2; + break; + default: return -1; - memcpy(eui, dev->dev_addr, EUI64_ADDR_LEN); - eui[0] ^= 2; + } + return 0; } @@ -2149,7 +2156,7 @@ static int ipv6_generate_eui64(u8 *eui, struct net_device *dev) case ARPHRD_TUNNEL: return addrconf_ifid_gre(eui, dev); case ARPHRD_6LOWPAN: - return addrconf_ifid_eui64(eui, dev); + return addrconf_ifid_6lowpan(eui, dev); case ARPHRD_IEEE1394: return addrconf_ifid_ieee1394(eui, dev); case ARPHRD_TUNNEL6: -- 2.9.3
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