This series converts all get/dump requests to .call_rcu.
This allows listing rulesets, sets, etc. even if another entity is
performaning an update.
In the dump case, only the dump request was locked via nfnl mutex,
i.e. the dump callbacks in nf_tables already use rcu read locks
everywhere.
So just convert the callbacks to .call_rcu to have nfnetlink
not grab the subsystem mutex in the first place.
The patches are repetitive, as the same pattern is applied to all
get callbacks.
I splitted them up into smaller chunks to make this more dissectable.
Florian Westphal (8):
netfilter: nf_tables: nf_tables_getgen: use call_rcu
netfilter: nf_tables: nf_tables_gettable: use call_rcu
netfilter: nf_tables: nf_tables_getchain: use call_rcu
netfilter: nf_tables: nf_tables_getset: use call_rcu
netfilter: nf_tables: nf_tables_getsetelem: use call_rcu
netfilter: nf_tables: nf_tables_getobj: use call_rcu
netfilter: nf_tables: nf_tables_getflowtable: use call_rcu
netfilter: nf_tables: nf_tables_getrule: use call_rcu
nf_tables_api.c | 111 ++++++++++++++++++++++++++++++++++++--------------------
1 file changed, 72 insertions(+), 39 deletions(-)
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