From: Vlad Buslov Date: Thu, 21 Mar 2019 13:17:44 +0000 (+0200) Subject: net: sched: flower: set unlocked flag for flower proto ops X-Git-Tag: v5.4.17~3632^2~327^2 X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=92149190067dc1ba656ce63a328c4b88b34e3f09;p=arm%2Flinux.git net: sched: flower: set unlocked flag for flower proto ops Set TCF_PROTO_OPS_DOIT_UNLOCKED for flower classifier to indicate that its ops callbacks don't require caller to hold rtnl lock. Don't take rtnl lock in fl_destroy_filter_work() that is executed on workqueue instead of being called by cls API and is not affected by setting TCF_PROTO_OPS_DOIT_UNLOCKED. Rtnl mutex is still manually taken by flower classifier before calling hardware offloads API that has not been updated for unlocked execution. Signed-off-by: Vlad Buslov Reviewed-by: Stefano Brivio Acked-by: Jiri Pirko Signed-off-by: David S. Miller --- diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c index 68bac808cf35..0638f17ac5ab 100644 --- a/net/sched/cls_flower.c +++ b/net/sched/cls_flower.c @@ -368,9 +368,7 @@ static void fl_destroy_filter_work(struct work_struct *work) struct cls_fl_filter *f = container_of(to_rcu_work(work), struct cls_fl_filter, rwork); - rtnl_lock(); __fl_destroy_filter(f); - rtnl_unlock(); } static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f, @@ -2372,6 +2370,7 @@ static struct tcf_proto_ops cls_fl_ops __read_mostly = { .tmplt_destroy = fl_tmplt_destroy, .tmplt_dump = fl_tmplt_dump, .owner = THIS_MODULE, + .flags = TCF_PROTO_OPS_DOIT_UNLOCKED, }; static int __init cls_fl_init(void)