Re: [PATCH net-next 0/7] Allow to monitor multicast cache event via rtnetlink

From: Nicolas Dichtel <redacted>
Date: Wed, 05 Dec 2012 12:02:50 +0100

Le 04/12/2012 21:02, Nicolas Dichtel a écrit :

quoted

I can have a try on a tile platform. I don't have access to sparc or
mips.

Hmm, I've read arm instead of mips! So I've tried on mips. Data are
aligned on 32-bit, like for all netlink messages. nla_put_u64() will
do the same, as it calls nla_put().

And the kernel will only use memcpy() to treat this attribute. Reader
will be in userland.

Then userland will trap if the 64-bit values are only 32-bit aligned.

That's the problem I'm talking about.

I don't want to export any more unaligned 64-bit values in netlink
messages, it's a complete mess.