Johannes Berg 670dc2833d netlink: advertise incomplete dumps ... Consider the following situation: * a dump that would show 8 entries, four in the first round, and four in the second * between the first and second rounds, 6 entries are removed * now the second round will not show any entry, and even if there is a sequence/generation counter the application will not know To solve this problem, add a new flag NLM_F_DUMP_INTR to the netlink header that indicates the dump wasn't consistent, this flag can also be set on the MSG_DONE message that terminates the dump, and as such above situation can be detected. To achieve this, add a sequence counter to the netlink callback struct. Of course, netlink code still needs to use this new functionality. The correct way to do that is to always set cb->seq when a dumpit callback is invoked and call nl_dump_check_consistent() for each new message. The core code will also call this function for the final MSG_DONE message. To make it usable with generic netlink, a new function genlmsg_nlhdr() is needed to obtain the netlink header from the genetlink user header. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>		2011-06-22 16:09:45 -04:00
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af_netlink.c	netlink: advertise incomplete dumps	2011-06-22 16:09:45 -04:00
genetlink.c	Revert "netlink: test for all flags of the NLM_F_DUMP composite"	2011-01-19 13:34:20 -08:00
Makefile	netlink: Move netlink attribute parsing support to lib	2009-03-04 14:53:30 +08:00