netdev - [PATCH net-next 03/12] net: sched: add tcf_block_cb

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Date:   Thu, 20 Jun 2019 21:49:08 +0200
From:   Pablo Neira Ayuso <pablo@...filter.org>
To:     netdev@...r.kernel.org
Cc:     netfilter-devel@...r.kernel.org, davem@...emloft.net,
        thomas.lendacky@....com, f.fainelli@...il.com,
        ariel.elior@...ium.com, michael.chan@...adcom.com,
        santosh@...lsio.com, madalin.bucur@....com,
        yisen.zhuang@...wei.com, salil.mehta@...wei.com,
        jeffrey.t.kirsher@...el.com, tariqt@...lanox.com,
        saeedm@...lanox.com, jiri@...lanox.com, idosch@...lanox.com,
        jakub.kicinski@...ronome.com, peppe.cavallaro@...com,
        grygorii.strashko@...com, andrew@...n.ch,
        vivien.didelot@...oirfairelinux.com, alexandre.torgue@...com,
        joabreu@...opsys.com, linux-net-drivers@...arflare.com,
        ganeshgr@...lsio.com, ogerlitz@...lanox.com,
        Manish.Chopra@...ium.com, marcelo.leitner@...il.com,
        mkubecek@...e.cz, venkatkumar.duvvuru@...adcom.com,
        cphealy@...il.com
Subject: [PATCH net-next 03/12] net: sched: add tcf_block_cb_free()

Just a stub to release tcf_block_cb objects, follow up patch extends it
to have a release callback in it for the private data.

Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
---
 include/net/pkt_cls.h | 5 +++++
 net/sched/cls_api.c   | 6 ++++++
 2 files changed, 11 insertions(+)

diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h
index 276a17a3547b..2816297449ee 100644
--- a/include/net/pkt_cls.h
+++ b/include/net/pkt_cls.h
@@ -74,6 +74,7 @@ static inline struct Qdisc *tcf_block_q(struct tcf_block *block)
 
 struct tcf_block_cb *tcf_block_cb_alloc(tc_setup_cb_t *cb,
 					void *cb_ident, void *cb_priv);
+void tcf_block_cb_free(struct tcf_block_cb *block_cb);
 void *tcf_block_cb_priv(struct tcf_block_cb *block_cb);
 struct tcf_block_cb *tcf_block_cb_lookup(struct tcf_block *block,
 					 tc_setup_cb_t *cb, void *cb_ident);
@@ -158,6 +159,10 @@ tcf_block_cb_alloc(tc_setup_cb_t *cb, void *cb_ident, void *cb_priv)
 	return NULL;
 }
 
+static inline void tcf_block_cb_free(struct tcf_block_cb *block_cb)
+{
+}
+
 static inline
 void *tcf_block_cb_priv(struct tcf_block_cb *block_cb)
 {
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index c01d825edab5..b86475ab8f63 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -763,6 +763,12 @@ struct tcf_block_cb *tcf_block_cb_alloc(tc_setup_cb_t *cb,
 }
 EXPORT_SYMBOL(tcf_block_cb_alloc);
 
+void tcf_block_cb_free(struct tcf_block_cb *block_cb)
+{
+	kfree(block_cb);
+}
+EXPORT_SYMBOL(tcf_block_cb_free);
+
 struct tcf_block_cb *__tcf_block_cb_register(struct tcf_block *block,
 					     tc_setup_cb_t *cb, void *cb_ident,
 					     void *cb_priv,
-- 
2.11.0