evie/android_kernel_oneplus_msm8998
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ipv6: generate random IID only for temporary addresses on RAWIP devices

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RAWIP devices require the device IID to be used for permanent
addresses only, and random IIDs to be generated for temporary
addresses. Legacy user-space applications rely on this behavior

CRs-Fixed: 860791
Change-Id: I007bdf8bcfdce687ad31612fed9d9c769321edb9
Signed-off-by: Harout Hedeshian <harouth@codeaurora.org>
This commit is contained in:
Harout Hedeshian 2015-06-24 15:16:34 -06:00 • committed by David Keitel
parent 07f438368c
commit 07c71659e8
1 changed files with 9 additions and 2 deletions
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11
net/ipv6/addrconf.c
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@ -2055,10 +2055,17 @@ static int ipv6_generate_eui64(u8 *eui, struct net_device *dev)
return addrconf_ifid_ieee1394(eui, dev);
case ARPHRD_TUNNEL6:
return addrconf_ifid_ip6tnl(eui, dev);
case ARPHRD_RAWIP:
get_random_bytes(eui, 8);
case ARPHRD_RAWIP: {
struct in6_addr lladdr;
if (ipv6_get_lladdr(dev, &lladdr, IFA_F_TENTATIVE))
get_random_bytes(eui, 8);
else
memcpy(eui, lladdr.s6_addr + 8, 8);
return 0;
}
}
return -1;
}