From 67bd0d5ea7974d9dc9c502c7b4096e16a80a553d Mon Sep 17 00:00:00 2001
From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Tue, 9 Jul 2019 22:55:44 +0200
Subject: [PATCH] net: flow_offload: add flow_block_cb_{priv, incref, decref}()
This patch completes the flow block API to introduce:
* flow_block_cb_priv() to access callback private data.
* flow_block_cb_incref() to bump reference counter on this flow block.
* flow_block_cb_decref() to decrement the reference counter.
These functions are taken from the existing tcf_block_cb_priv(),
tcf_block_cb_incref() and tcf_block_cb_decref().
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
include/net/flow_offload.h | 4 ++++
net/core/flow_offload.c | 18 ++++++++++++++++++
2 files changed, 22 insertions(+)
diff --git a/include/net/flow_offload.h b/include/net/flow_offload.h
index 563d7dc7afc1e..3fb9cc4da63ee 100644
--- a/include/net/flow_offload.h
+++ b/include/net/flow_offload.h
@@ -281,6 +281,10 @@ void flow_block_cb_free(struct flow_block_cb *block_cb);
struct flow_block_cb *flow_block_cb_lookup(struct flow_block_offload *offload,
tc_setup_cb_t *cb, void *cb_ident);
+void *flow_block_cb_priv(struct flow_block_cb *block_cb);
+void flow_block_cb_incref(struct flow_block_cb *block_cb);
+unsigned int flow_block_cb_decref(struct flow_block_cb *block_cb);
+
static inline void flow_block_cb_add(struct flow_block_cb *block_cb,
struct flow_block_offload *offload)
{
diff --git a/net/core/flow_offload.c b/net/core/flow_offload.c
index c81a7e0c5e044..a36a9dc1c6df7 100644
--- a/net/core/flow_offload.c
+++ b/net/core/flow_offload.c
@@ -211,6 +211,24 @@ struct flow_block_cb *flow_block_cb_lookup(struct flow_block_offload *f,
}
EXPORT_SYMBOL(flow_block_cb_lookup);
+void *flow_block_cb_priv(struct flow_block_cb *block_cb)
+{
+ return block_cb->cb_priv;
+}
+EXPORT_SYMBOL(flow_block_cb_priv);
+
+void flow_block_cb_incref(struct flow_block_cb *block_cb)
+{
+ block_cb->refcnt++;
+}
+EXPORT_SYMBOL(flow_block_cb_incref);
+
+unsigned int flow_block_cb_decref(struct flow_block_cb *block_cb)
+{
+ return --block_cb->refcnt;
+}
+EXPORT_SYMBOL(flow_block_cb_decref);
+
int flow_block_cb_setup_simple(struct flow_block_offload *f,
struct list_head *driver_block_list,
tc_setup_cb_t *cb, void *cb_ident, void *cb_priv,
--
GitLab