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| author | Pedro Tammela <pctammela@mojatatu.com> | 2023-12-01 20:50:13 +0300 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2023-12-05 13:15:08 +0300 |
| commit | a0e947c9ccffe47d45aca793d9e7fe4f4494e381 (patch) | |
| tree | 2a5d782e7e335376c52e696cd145314ae87903f0 /net/sched/act_api.c | |
| parent | 3872347e0a16876279bb21642e03842f283f0e38 (diff) | |
| download | linux-a0e947c9ccffe47d45aca793d9e7fe4f4494e381.tar.xz | |
net/sched: act_api: avoid non-contiguous action array
In tcf_action_add, when putting the reference for the bound actions
it assigns NULLs to just created actions passing a non contiguous
array to tcf_action_put_many.
Refactor the code so the actions array is always contiguous.
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'net/sched/act_api.c')
| -rw-r--r-- | net/sched/act_api.c | 33 |
1 files changed, 21 insertions, 12 deletions
diff --git a/net/sched/act_api.c b/net/sched/act_api.c index 05aae374c159..2e948e5992b6 100644 --- a/net/sched/act_api.c +++ b/net/sched/act_api.c @@ -1135,18 +1135,29 @@ static int tcf_action_put(struct tc_action *p) return __tcf_action_put(p, false); } -/* Put all actions in this array, skip those NULL's. */ static void tcf_action_put_many(struct tc_action *actions[]) { + struct tc_action *a; int i; - for (i = 0; i < TCA_ACT_MAX_PRIO; i++) { - struct tc_action *a = actions[i]; - const struct tc_action_ops *ops; + tcf_act_for_each_action(i, a, actions) { + const struct tc_action_ops *ops = a->ops; + if (tcf_action_put(a)) + module_put(ops->owner); + } +} - if (!a) +static void tca_put_bound_many(struct tc_action *actions[], int init_res[]) +{ + struct tc_action *a; + int i; + + tcf_act_for_each_action(i, a, actions) { + const struct tc_action_ops *ops = a->ops; + + if (init_res[i] == ACT_P_CREATED) continue; - ops = a->ops; + if (tcf_action_put(a)) module_put(ops->owner); } @@ -1975,7 +1986,7 @@ static int tcf_action_add(struct net *net, struct nlattr *nla, struct netlink_ext_ack *extack) { size_t attr_size = 0; - int loop, ret, i; + int loop, ret; struct tc_action *actions[TCA_ACT_MAX_PRIO] = {}; int init_res[TCA_ACT_MAX_PRIO] = {}; @@ -1988,13 +1999,11 @@ static int tcf_action_add(struct net *net, struct nlattr *nla, if (ret < 0) return ret; + ret = tcf_add_notify(net, n, actions, portid, attr_size, extack); - /* only put existing actions */ - for (i = 0; i < TCA_ACT_MAX_PRIO; i++) - if (init_res[i] == ACT_P_CREATED) - actions[i] = NULL; - tcf_action_put_many(actions); + /* only put bound actions */ + tca_put_bound_many(actions, init_res); return ret; } |