linux-toradex.git/net/sched/cls_bpf.c, branch v4.19

cls_bpf: Use kmemdup instead of duplicating it in cls_bpf_prog_from_ops

2018-07-29T20:19:49+00:00

Replace calls to kmalloc followed by a memcpy with a direct call to
kmemdup.

Signed-off-by: YueHaibing 
Acked-by: Daniel Borkmann 
Signed-off-by: David S. Miller

net: sched: cls_bpf: implement offload tcf_proto_op

2018-06-26T14:21:33+00:00

Add the offload tcf_proto_op in cls_bpf to generate an offload message for
each bpf prog in the given tcf_proto. Call the specified callback with
this new offload message. The function only returns an error if the
callback rejects adding a 'hardware only' prog.

A prog contains a flag to indicate if it is in hardware or not. To
ensure the offload function properly maintains this flag, keep a reference
counter for the number of instances of the prog that are in hardware. Only
update the flag when this counter changes from or to 0.

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

net_sched: switch to rcu_work

2018-05-25T02:56:15+00:00

Commit 05f0fe6b74db ("RCU, workqueue: Implement rcu_work") introduces
new API's for dispatching work in a RCU callback. Now we can just
switch to the new API's for tc filters. This could get rid of a lot
of code.

Cc: Tejun Heo 
Cc: "Paul E. McKenney" 
Cc: Jamal Hadi Salim 
Signed-off-by: Cong Wang 
Signed-off-by: David S. Miller

cls_bpf: Convert to use idr_alloc_u32

2018-02-06T21:41:26+00:00

Use the new helper.  This has a modest reduction in both lines of code
and compiled code size.

Signed-off-by: Matthew Wilcox

idr: Delete idr_replace_ext function

2018-02-06T21:40:31+00:00

Changing idr_replace's 'id' argument to 'unsigned long' works for all
callers.  Callers which passed a negative ID now get -ENOENT instead of
-EINVAL.  No callers relied on this error value.

Signed-off-by: Matthew Wilcox

idr: Delete idr_remove_ext function

2018-02-06T21:40:31+00:00

Simply changing idr_remove's 'id' argument to 'unsigned long' suffices
for all callers.

Signed-off-by: Matthew Wilcox

cls_bpf: propagate extack to offload delete callback

2018-01-24T21:01:10+00:00

Propagate extack on removal of offloaded filter.

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

cls_bpf: pass offload flags to tc_cls_common_offload_init()

2018-01-24T21:01:10+00:00

Pass offload flags to the new implementation of
tc_cls_common_offload_init().  Extack will now only
be set if user requested skip_sw.

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

cls_bpf: remove gen_flags from bpf_offload

2018-01-24T21:01:10+00:00

cls_bpf now guarantees that only device-bound programs are
allowed with skip_sw.  The drivers no longer pay attention to
flags on filter load, therefore the bpf_offload member can be
removed.  If flags are needed again they should probably be
added to struct tc_cls_common_offload instead.

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

net: sched: prepare for reimplementation of tc_cls_common_offload_init()

2018-01-24T21:01:10+00:00

Rename the tc_cls_common_offload_init() helper function to
tc_cls_common_offload_init_deprecated() and add a new implementation
which also takes flags argument.  We will only set extack if flags
indicate that offload is forced (skip_sw) otherwise driver errors
should be ignored, as they don't influence the overall filter
installation.

Note that we need the tc_skip_hw() helper for new version, therefore
it is added later in the file.

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