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Date: Thu, 12 Oct 2017 19:18:01 +0200
From: Jiri Pirko <jiri@...nulli.us>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, jhs@...atatu.com, xiyou.wangcong@...il.com,
mlxsw@...lanox.com, andrew@...n.ch,
vivien.didelot@...oirfairelinux.com, f.fainelli@...il.com,
michael.chan@...adcom.com, ganeshgr@...lsio.com,
jeffrey.t.kirsher@...el.com, saeedm@...lanox.com,
matanb@...lanox.com, leonro@...lanox.com, idosch@...lanox.com,
jakub.kicinski@...ronome.com, ast@...nel.org, daniel@...earbox.net,
simon.horman@...ronome.com, pieter.jansenvanvuuren@...ronome.com,
john.hurley@...ronome.com, edumazet@...gle.com, dsahern@...il.com,
alexander.h.duyck@...el.com, john.fastabend@...il.com,
willemb@...gle.com
Subject: [patch net-next 12/34] net: sched: add block bind/unbind notification to drivers
From: Jiri Pirko <jiri@...lanox.com>
Introduce new type of ndo_setup_tc message to propage binding/unbinding
of a block to binder.
Signed-off-by: Jiri Pirko <jiri@...lanox.com>
---
include/linux/netdevice.h | 1 +
include/net/pkt_cls.h | 21 +++++++++++++++++++--
include/net/sch_generic.h | 1 +
net/sched/cls_api.c | 33 +++++++++++++++++++++++++++++++--
4 files changed, 52 insertions(+), 4 deletions(-)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 31bb301..062a4f5 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -771,6 +771,7 @@ typedef u16 (*select_queue_fallback_t)(struct net_device *dev,
enum tc_setup_type {
TC_SETUP_MQPRIO,
+ TC_SETUP_BLOCK,
TC_SETUP_CLSU32,
TC_SETUP_CLSFLOWER,
TC_SETUP_CLSMATCHALL,
diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h
index 05bc999..104326fc 100644
--- a/include/net/pkt_cls.h
+++ b/include/net/pkt_cls.h
@@ -17,9 +17,15 @@ 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 {
bool shareable;
u32 block_index;
+ enum tcf_block_binder_type binder_type;
+ bool bound;
};
#ifdef CONFIG_NET_CLS
@@ -34,7 +40,7 @@ int tcf_block_get_ext(struct tcf_block **p_block,
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 tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
struct tcf_block_ext_info *ei);
static inline bool tcf_is_block_shared(const struct tcf_block *block)
@@ -79,7 +85,7 @@ 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 tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
struct tcf_block_ext_info *ei)
{
}
@@ -468,6 +474,17 @@ 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/include/net/sch_generic.h b/include/net/sch_generic.h
index a4926c9..e210452 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -69,6 +69,7 @@ struct Qdisc {
* qdisc_tree_decrease_qlen() should stop.
*/
#define TCQ_F_INVISIBLE 0x80 /* invisible by default in dump */
+#define TCQ_F_BOUNDOFFLOAD 0x100 /* bound to the offload driver */
u32 limit;
const struct Qdisc_ops *ops;
struct qdisc_size_table __rcu *stab;
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 908b38a..8f6e2c9 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -377,6 +377,33 @@ static struct tcf_chain *tcf_block_chain_zero(struct tcf_block *block)
return list_first_entry(&block->chain_list, struct tcf_chain, list);
}
+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)
@@ -409,6 +436,7 @@ int tcf_block_get_ext(struct tcf_block **p_block,
if (err)
goto err_chain_filter_chain_ptr_add;
+ tcf_block_offload_bind(block, q, ei);
*p_block = block;
return 0;
@@ -435,12 +463,13 @@ int tcf_block_get(struct tcf_block **p_block,
EXPORT_SYMBOL(tcf_block_get);
void tcf_block_put_ext(struct tcf_block *block,
- struct tcf_proto __rcu **p_filter_chain,
+ struct tcf_proto __rcu **p_filter_chain, struct Qdisc *q,
struct tcf_block_ext_info *ei)
{
if (!block)
return;
+ tcf_block_offload_unbind(block, q, ei);
tcf_chain_filter_chain_ptr_del(tcf_block_chain_zero(block),
p_filter_chain);
@@ -456,7 +485,7 @@ void tcf_block_put(struct tcf_block *block)
{
struct tcf_block_ext_info ei = {0, };
- tcf_block_put_ext(block, NULL, &ei);
+ tcf_block_put_ext(block, NULL, block->q, &ei);
}
EXPORT_SYMBOL(tcf_block_put);
--
2.9.5
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