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| author | Vlad Buslov <vladbu@mellanox.com> | 2018-07-05 17:24:28 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-07-08 12:42:29 +0900 |
| commit | b409074e6693bcdaa7abbee2a035f22a9eabda53 (patch) | |
| tree | f531c8c864cbffaa0c2258d2dada07b1fc03d33b /net/sched/act_sample.c | |
| parent | 2a2ea349704fffade9526d5122299edbbfd122ca (diff) | |
| download | lwn-b409074e6693bcdaa7abbee2a035f22a9eabda53.tar.gz lwn-b409074e6693bcdaa7abbee2a035f22a9eabda53.zip | |
net: sched: add 'delete' function to action ops
Extend action ops with 'delete' function. Each action type to implements
its own delete function that doesn't depend on rtnl lock.
Implement delete function that is required to delete actions without
holding rtnl lock. Use action API function that atomically deletes action
only if it is still in action idr. This implementation prevents concurrent
threads from deleting same action twice.
Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/act_sample.c')
| -rw-r--r-- | net/sched/act_sample.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/net/sched/act_sample.c b/net/sched/act_sample.c index 316fc645595d..6f79d2afcba2 100644 --- a/net/sched/act_sample.c +++ b/net/sched/act_sample.c @@ -220,6 +220,13 @@ static int tcf_sample_search(struct net *net, struct tc_action **a, u32 index, return tcf_idr_search(tn, a, index); } +static int tcf_sample_delete(struct net *net, u32 index) +{ + struct tc_action_net *tn = net_generic(net, sample_net_id); + + return tcf_idr_delete_index(tn, index); +} + static struct tc_action_ops act_sample_ops = { .kind = "sample", .type = TCA_ACT_SAMPLE, @@ -230,6 +237,7 @@ static struct tc_action_ops act_sample_ops = { .cleanup = tcf_sample_cleanup, .walk = tcf_sample_walker, .lookup = tcf_sample_search, + .delete = tcf_sample_delete, .size = sizeof(struct tcf_sample), }; |