net: sched: add netns refcount tracker to struct tcf_exts

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h
index 193f88ebf629bd5a66c2d155346b40695e259a13..cebc1bd713b68e9c9c7b7656f569e749c0dc9297 100644 (file)
--- a/include/net/pkt_cls.h
+++ b/include/net/pkt_cls.h
@@ -202,7 +202,8 @@ struct tcf_exts {
        __u32   type; /* for backward compat(TCA_OLD_COMPAT) */
        int nr_actions;
        struct tc_action **actions;
-       struct net *net;
+       struct net      *net;
+       netns_tracker   ns_tracker;
 #endif
        /* Map to export classifier specific extension TLV types to the
         * generic extensions API. Unsupported extensions must be set to 0.
@@ -218,6 +219,7 @@ static inline int tcf_exts_init(struct tcf_exts *exts, struct net *net,
        exts->type = 0;
        exts->nr_actions = 0;
        exts->net = net;
+       netns_tracker_alloc(net, &exts->ns_tracker, GFP_KERNEL);
        exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *),
                                GFP_KERNEL);
        if (!exts->actions)
@@ -236,6 +238,8 @@ static inline bool tcf_exts_get_net(struct tcf_exts *exts)
 {
 #ifdef CONFIG_NET_CLS_ACT
        exts->net = maybe_get_net(exts->net);
+       if (exts->net)
+               netns_tracker_alloc(exts->net, &exts->ns_tracker, GFP_KERNEL);
        return exts->net != NULL;
 #else
        return true;
@@ -246,7 +250,7 @@ static inline void tcf_exts_put_net(struct tcf_exts *exts)
 {
 #ifdef CONFIG_NET_CLS_ACT
        if (exts->net)
-               put_net(exts->net);
+               put_net_track(exts->net, &exts->ns_tracker);
 #endif
 }