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net: sched: Pass qdisc reference in struct flow_block_offload

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Previously, shared blocks were only relevant for the pseudo-qdiscs ingress
and clsact. Recently, a qevent facility was introduced, which allows to
bind blocks to well-defined slots of a qdisc instance. RED in particular
got two qevents: early_drop and mark. Drivers that wish to offload these
blocks will be sent the usual notification, and need to know which qdisc it
is related to.

To that end, extend flow_block_offload with a "sch" pointer, and initialize
as appropriate. This prompts changes in the indirect block facility, which
now tracks the scheduler in addition to the netdevice. Update signatures of
several functions similarly.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Petr Machata
2020-07-11 00:55:03 +03:00
committed by David S. Miller
parent e1d82f7ad0
commit c40f4e50b6
9 changed files with 38 additions and 32 deletions
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9
include/net/flow_offload.h
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@@ -444,6 +444,7 @@ struct flow_block_offload {
struct list_head cb_list;
struct list_head *driver_block_list;
struct netlink_ext_ack *extack;
struct Qdisc *sch;
};
enum tc_setup_type;
@@ -455,6 +456,7 @@ struct flow_block_cb;
struct flow_block_indr {
struct list_head list;
struct net_device *dev;
struct Qdisc *sch;
enum flow_block_binder_type binder_type;
void *data;
void *cb_priv;
@@ -479,7 +481,8 @@ struct flow_block_cb *flow_indr_block_cb_alloc(flow_setup_cb_t *cb,
void *cb_ident, void *cb_priv,
void (*release)(void *cb_priv),
struct flow_block_offload *bo,
struct net_device *dev, void *data,
struct net_device *dev,
struct Qdisc *sch, void *data,
void *indr_cb_priv,
void (*cleanup)(struct flow_block_cb *block_cb));
void flow_block_cb_free(struct flow_block_cb *block_cb);
@@ -553,7 +556,7 @@ static inline void flow_block_init(struct flow_block *flow_block)
INIT_LIST_HEAD(&flow_block->cb_list);
}
typedef int flow_indr_block_bind_cb_t(struct net_device *dev, void *cb_priv,
typedef int flow_indr_block_bind_cb_t(struct net_device *dev, struct Qdisc *sch, void *cb_priv,
enum tc_setup_type type, void *type_data,
void *data,
void (*cleanup)(struct flow_block_cb *block_cb));
@@ -561,7 +564,7 @@ typedef int flow_indr_block_bind_cb_t(struct net_device *dev, void *cb_priv,
int flow_indr_dev_register(flow_indr_block_bind_cb_t *cb, void *cb_priv);
void flow_indr_dev_unregister(flow_indr_block_bind_cb_t *cb, void *cb_priv,
void (*release)(void *cb_priv));
int flow_indr_dev_setup_offload(struct net_device *dev,
int flow_indr_dev_setup_offload(struct net_device *dev, struct Qdisc *sch,
enum tc_setup_type type, void *data,
struct flow_block_offload *bo,
void (*cleanup)(struct flow_block_cb *block_cb));