linux-toradex.git/include/net/flow_offload.h, branch v5.5-rc7

net: core: rename indirect block ingress cb function

2019-12-07T04:45:09+00:00

With indirect blocks, a driver can register for callbacks from a device
that is does not 'own', for example, a tunnel device. When registering to
or unregistering from a new device, a callback is triggered to generate
a bind/unbind event. This, in turn, allows the driver to receive any
existing rules or to properly clean up installed rules.

When first added, it was assumed that all indirect block registrations
would be for ingress offloads. However, the NFP driver can, in some
instances, support clsact qdisc binds for egress offload.

Change the name of the indirect block callback command in flow_offload to
remove the 'ingress' identifier from it. While this does not change
functionality, a follow up patch will implement a more more generic
callback than just those currently just supporting ingress offload.

Fixes: 4d12ba42787b ("nfp: flower: allow offloading of matches on 'internal' ports")
Signed-off-by: John Hurley 
Acked-by: Jakub Kicinski 
Signed-off-by: David S. Miller

net: sched: extend flow_action_entry with destructor

2019-09-16T07:18:02+00:00

Generalize flow_action_entry cleanup by extending the structure with
pointer to destructor function. Set the destructor in
tc_setup_flow_action(). Refactor tc_cleanup_flow_action() to call
entry->destructor() instead of using switch that dispatches by entry->id
and manually executes cleanup.

This refactoring is necessary for following patches in this series that
require destructor to use tc_action->ops callbacks that can't be easily
obtained in tc_cleanup_flow_action().

Signed-off-by: Vlad Buslov 
Acked-by: Jiri Pirko 
Signed-off-by: David S. Miller

net: sched: add API for registering unlocked offload block callbacks

2019-08-26T21:17:43+00:00

Extend struct flow_block_offload with "unlocked_driver_cb" flag to allow
registering and unregistering block hardware offload callbacks that do not
require caller to hold rtnl lock. Extend tcf_block with additional
lockeddevcnt counter that is incremented for each non-unlocked driver
callback attached to device. This counter is necessary to conditionally
obtain rtnl lock before calling hardware callbacks in following patches.

Register mlx5 tc block offload callbacks as "unlocked".

Signed-off-by: Vlad Buslov 
Acked-by: Jiri Pirko 
Signed-off-by: David S. Miller

net/mlx5e: Add tc flower tracepoints

2019-08-21T22:55:17+00:00

Implemented following tracepoints:
1. Configure flower (mlx5e_configure_flower)
2. Delete flower (mlx5e_delete_flower)
3. Stats flower (mlx5e_stats_flower)

Usage example:
 ># cd /sys/kernel/debug/tracing
 ># echo mlx5:mlx5e_configure_flower >> set_event
 ># cat trace
    ...
    tc-6535  [019] ...1  2672.404466: mlx5e_configure_flower: cookie=0000000067874a55 actions= REDIRECT

Added corresponding documentation in
    Documentation/networking/device-driver/mellanox/mlx5.rst

Signed-off-by: Dmytro Linkin 
Reviewed-by: Vlad Buslov 
Signed-off-by: Saeed Mahameed

flow_offload: support get multi-subsystem block

2019-08-09T01:44:30+00:00

It provide a callback list to find the blocks of tc
and nft subsystems

Signed-off-by: wenxu 
Acked-by: Jakub Kicinski 
Signed-off-by: David S. Miller

flow_offload: move tc indirect block to flow offload

2019-08-09T01:44:30+00:00

move tc indirect block to flow_offload and rename
it to flow indirect block.The nf_tables can use the
indr block architecture.

Signed-off-by: wenxu 
Acked-by: Jakub Kicinski 
Signed-off-by: David S. Miller

net: sched: add ingress mirred action to hardware IR

2019-08-06T21:24:21+00:00

TC mirred actions (redirect and mirred) can send to egress or ingress of a
device. Currently only egress is used for hw offload rules.

Modify the intermediate representation for hw offload to include mirred
actions that go to ingress. This gives drivers access to such rules and
can decide whether or not to offload them.

Signed-off-by: John Hurley 
Reviewed-by: Simon Horman 
Reviewed-by: Jakub Kicinski 
Signed-off-by: David S. Miller

net: sched: add skbedit of ptype action to hardware IR

2019-08-06T21:24:21+00:00

TC rules can impliment skbedit actions. Currently actions that modify the
skb mark are passed to offloading drivers via the hardware intermediate
representation in the flow_offload API.

Extend this to include skbedit actions that modify the packet type of the
skb. Such actions may be used to set the ptype to HOST when redirecting a
packet to ingress.

Signed-off-by: John Hurley 
Reviewed-by: Simon Horman 
Reviewed-by: Jakub Kicinski 
Signed-off-by: David S. Miller

net: sched: include mpls actions in hardware intermediate representation

2019-07-23T20:52:50+00:00

A recent addition to TC actions is the ability to manipulate the MPLS
headers on packets.

In preparation to offload such actions to hardware, update the IR code to
accept and prepare the new actions.

Note that no driver currently impliments the MPLS dec_ttl action so this
is not included.

Signed-off-by: John Hurley 
Reviewed-by: Jakub Kicinski 
Signed-off-by: David S. Miller

net: flow_offload: add flow_block structure and use it

2019-07-20T04:27:45+00:00

This object stores the flow block callbacks that are attached to this
block. Update flow_block_cb_lookup() to take this new object.

This patch restores the block sharing feature.

Fixes: da3eeb904ff4 ("net: flow_offload: add list handling functions")
Signed-off-by: Pablo Neira Ayuso 
Acked-by: Jiri Pirko 
Signed-off-by: David S. Miller