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Date: Fri, 19 Feb 2010 13:41:42 +0100 From: Florian Westphal <fwestphal@...aro.com> To: netdev@...r.kernel.org Cc: johannes@...solutions.net Subject: [PATCH v2 0/5] xfrm: add x86 CONFIG_COMPAT support 2nd version of xfrm x86-compat patch set. please refer to the individual patches for the list of changes since v1. At the moment it is not possible to use the xfrm netlink interface on x86_64 with a 32bit userland. The problem exists because a few structures, e.g. struct xfrm_usersa_info, have different sizes in user/kernelspace (3 byte padding on x86, 7 byte on x86_64) due to different alignment requirements of "u64". First two patches add necessary CONFIG_COMPAT_NETLINK_MESSAGES infrastructure to netlink in/output path. Patch 3 is a refactoring patch to split functionality (especially nlmsg allocation and adding data to the nlmsg) in order to re-use code and ease review. Patch 4 adds CONFIG_COMPAT_FOR_U64_ALIGNMENT support to xfrm. Patch 5 sets CMSG_MSG_COMPAT in sock_aio_write(), depending on is_compat_task(). If patch 5 is deemed too ugly, just pretend it doesn't exist; userspace can be patched to use sendmsg instead of write() to fix the problem, too. include/linux/netlink.h | 1 net/netlink/af_netlink.c | 11 + net/socket.c | 4 net/xfrm/Kconfig | 1 net/xfrm/xfrm_user.c | 505 +++++++++++++++++++++++++++++++++++++++++------ 5 files changed, 462 insertions(+), 60 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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