From: Jiri Pirko <j...@mellanox.com>
Introduce new type of ndo_setup_tc message to propage binding/unbinding
of a block to driver. Call this ndo whenever qdisc gets/puts a block.
Alongside with this, there's need to propagate binder type from qdisc
code down to the notifier. So introduce extended variants of
block_get/put in order to pass this info.
Signed-off-by: Jiri Pirko <j...@mellanox.com>
---
v1->v2:
- move new enum value to the end
---
include/linux/netdevice.h | 1 +
include/net/pkt_cls.h | 40 +++++++++++++++++++++++++++++++++
net/sched/cls_api.c | 56 ++++++++++++++++++++++++++++++++++++++++++++---
3 files changed, 94 insertions(+), 3 deletions(-)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index bf014af..4de5b08 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -775,6 +775,7 @@ enum tc_setup_type {
TC_SETUP_CLSFLOWER,
TC_SETUP_CLSMATCHALL,
TC_SETUP_CLSBPF,
+ TC_SETUP_BLOCK,
};
/* These structures hold the attributes of xdp state that are being passed
diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h
index 49a143e..41bc7d7 100644
--- a/include/net/pkt_cls.h
+++ b/include/net/pkt_cls.h
@@ -17,13 +17,27 @@ struct tcf_walker {
int register_tcf_proto_ops(struct tcf_proto_ops *ops);
int unregister_tcf_proto_ops(struct tcf_proto_ops *ops);
+enum tcf_block_binder_type {
+ TCF_BLOCK_BINDER_TYPE_UNSPEC,
+};
+
+struct tcf_block_ext_info {
+ enum tcf_block_binder_type binder_type;
+};
+
#ifdef CONFIG_NET_CLS
struct tcf_chain *tcf_chain_get(struct tcf_block *block, u32 chain_index,
bool create);
void tcf_chain_put(struct tcf_chain *chain);
int tcf_block_get(struct tcf_block **p_block,
struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q);
+int tcf_block_get_ext(struct tcf_block **p_block,
+ struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
+ struct tcf_block_ext_info *ei);
void tcf_block_put(struct tcf_block *block);
+void tcf_block_put_ext(struct tcf_block *block,
+ struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
+ struct tcf_block_ext_info *ei);
static inline struct Qdisc *tcf_block_q(struct tcf_block *block)
{
@@ -46,10 +60,25 @@ int tcf_block_get(struct tcf_block **p_block,
return 0;
}
+static inline
+int tcf_block_get_ext(struct tcf_block **p_block,
+ struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
+ struct tcf_block_ext_info *ei)
+{
+ return 0;
+}
+
static inline void tcf_block_put(struct tcf_block *block)
{
}
+static inline
+void tcf_block_put_ext(struct tcf_block *block,
+ struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
+ struct tcf_block_ext_info *ei)
+{
+}
+
static inline struct Qdisc *tcf_block_q(struct tcf_block *block)
{
return NULL;
@@ -434,6 +463,17 @@ tcf_match_indev(struct sk_buff *skb, int ifindex)
int tc_setup_cb_call(struct tcf_exts *exts, enum tc_setup_type type,
void *type_data, bool err_stop);
+enum tc_block_command {
+ TC_BLOCK_BIND,
+ TC_BLOCK_UNBIND,
+};
+
+struct tc_block_offload {
+ enum tc_block_command command;
+ enum tcf_block_binder_type binder_type;
+ struct tcf_block *block;
+};
+
struct tc_cls_common_offload {
u32 chain_index;
__be16 protocol;
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 2e8e87f..92dce26 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -240,8 +240,36 @@ tcf_chain_filter_chain_ptr_set(struct tcf_chain *chain,
chain->p_filter_chain = p_filter_chain;
}
-int tcf_block_get(struct tcf_block **p_block,
- struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q)
+static void tcf_block_offload_cmd(struct tcf_block *block, struct Qdisc *q,
+ struct tcf_block_ext_info *ei,
+ enum tc_block_command command)
+{
+ struct net_device *dev = q->dev_queue->dev;
+ struct tc_block_offload bo = {};
+
+ if (!tc_can_offload(dev))
+ return;
+ bo.command = command;
+ bo.binder_type = ei->binder_type;
+ bo.block = block;
+ dev->netdev_ops->ndo_setup_tc(dev, TC_SETUP_BLOCK, &bo);
+}
+
+static void tcf_block_offload_bind(struct tcf_block *block, struct Qdisc *q,
+ struct tcf_block_ext_info *ei)
+{
+ tcf_block_offload_cmd(block, q, ei, TC_BLOCK_BIND);
+}
+
+static void tcf_block_offload_unbind(struct tcf_block *block, struct Qdisc *q,
+ struct tcf_block_ext_info *ei)
+{
+ tcf_block_offload_cmd(block, q, ei, TC_BLOCK_UNBIND);
+}
+
+int tcf_block_get_ext(struct tcf_block **p_block,
+ struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
+ struct tcf_block_ext_info *ei)
{
struct tcf_block *block = kzalloc(sizeof(*block), GFP_KERNEL);
struct tcf_chain *chain;
@@ -259,6 +287,7 @@ int tcf_block_get(struct tcf_block **p_block,
tcf_chain_filter_chain_ptr_set(chain, p_filter_chain);
block->net = qdisc_net(q);
block->q = q;
+ tcf_block_offload_bind(block, q, ei);
*p_block = block;
return 0;
@@ -266,15 +295,28 @@ int tcf_block_get(struct tcf_block **p_block,
kfree(block);
return err;
}
+EXPORT_SYMBOL(tcf_block_get_ext);
+
+int tcf_block_get(struct tcf_block **p_block,
+ struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q)
+{
+ struct tcf_block_ext_info ei = {0, };
+
+ return tcf_block_get_ext(p_block, p_filter_chain, q, &ei);
+}
EXPORT_SYMBOL(tcf_block_get);
-void tcf_block_put(struct tcf_block *block)
+void tcf_block_put_ext(struct tcf_block *block,
+ struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
+ struct tcf_block_ext_info *ei)
{
struct tcf_chain *chain, *tmp;
if (!block)
return;
+ tcf_block_offload_unbind(block, q, ei);
+
/* XXX: Standalone actions are not allowed to jump to any chain, and
* bound actions should be all removed after flushing. However,
* filters are destroyed in RCU callbacks, we have to hold the chains
@@ -302,6 +344,14 @@ void tcf_block_put(struct tcf_block *block)
tcf_chain_put(chain);
kfree(block);
}
+EXPORT_SYMBOL(tcf_block_put_ext);
+
+void tcf_block_put(struct tcf_block *block)
+{
+ struct tcf_block_ext_info ei = {0, };
+
+ tcf_block_put_ext(block, NULL, block->q, &ei);
+}
EXPORT_SYMBOL(tcf_block_put);
/* Main classifier routine: scans classifier chain attached
--
2.9.5
