Return-Path: From: Alexander Aring To: linux-wpan@vger.kernel.org Cc: kernel@pengutronix.de, linux-bluetooth@vger.kernel.org, Alexander Aring Subject: [RFCv2 bluetooth-next 15/19] ipv6: addrconf: fix 48 bit 6lowpan autoconfiguration Date: Sun, 7 Aug 2016 16:30:52 +0200 Message-Id: <20160807143056.3116-16-aar@pengutronix.de> In-Reply-To: <20160807143056.3116-1-aar@pengutronix.de> References: <20160807143056.3116-1-aar@pengutronix.de> Sender: linux-bluetooth-owner@vger.kernel.org List-ID: This patch adds support for 48 bit 6LoWPAN address length autoconfiguration which is the case for BTLE 6LoWPAN. Signed-off-by: Alexander Aring --- net/ipv6/addrconf.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index ab3e796..f2d4de8 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -2007,12 +2007,21 @@ 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: + if (dev->addr_len != EUI64_ADDR_LEN) + return -1; + 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; } @@ -2103,7 +2112,7 @@ static int ipv6_generate_eui64(u8 *eui, struct net_device *dev) case ARPHRD_IPGRE: 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: -- 2.9.2