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register_{netdevice/inetaddr/inet6addr}_notifier may return an error
value, this patch adds the code to handle these error paths.
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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parameter net of nf_flow_table_cleanup() is not used.
So that it can be removed.
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Replace the nf_tables_ prefix by nft_ and merge code into single lookup
function whenever possible. In many cases we go over the 80-chars
boundary function names, this save us ~50 LoC.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Move the flowtable cleanup routines to nf_flow_table and expose the
nf_flow_table_cleanup() helper function.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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nft_flow_offload module removal does not require to flush existing
flowtables, it is valid to remove this module while keeping flowtables
around.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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If netdevice goes down, then flowtable entries are scheduled to be
removed. Wait for garbage collector to have a chance to run so it can
delete them from the hashtable.
The flush call might sleep, so hold the nfnl mutex from
nft_flow_table_iterate() instead of rcu read side lock. The use of the
nfnl mutex is also implicitly fixing races between updates via nfnetlink
and netdevice event.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Place all existing user defined tables in struct net *, instead of
having one list per family. This saves us from one level of indentation
in netlink dump functions.
Place pointer to struct nft_af_info in struct nft_table temporarily, as
we still need this to put back reference module reference counter on
table removal.
This patch comes in preparation for the removal of struct nft_af_info.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Add new instruction for the nf_tables VM that allows us to specify what
flows are offloaded into a given flow table via name. This new
instruction creates the flow entry and adds it to the flow table.
Only established flows, ie. we have seen traffic in both directions, are
added to the flow table. You can still decide to offload entries at a
later stage via packet counting or checking the ct status in case you
want to offload assured conntracks.
This new extension depends on the conntrack subsystem.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Taehee Yoo
Pablo Neira Ayuso