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UPSTREAM: cpumap: Formalize map value as a named struct

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As it has been already done for devmap, introduce 'struct bpf_cpumap_val'
to formalize the expected values that can be passed in for a CPUMAP.
Update cpumap code to use the struct.

Change-Id: I747c5bd9ce9032f3bcbe9a87c8d03b3b803e5bc0
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Acked-by: Jesper Dangaard Brouer <[email protected]>
Link: https://lore.kernel.org/bpf/754f950674665dae6139c061d28c1d982aaf4170.1594734381.git.lorenzo@kernel.org
This commit is contained in:
Lorenzo Bianconi 2020-07-14 15:56:37 +02:00 • committed by basamaryan
commit 4597eb1008
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3 changed files with 33 additions and 13 deletions
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9
tools/include/uapi/linux/bpf.h
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@ -3828,6 +3828,15 @@ struct bpf_devmap_val {
} bpf_prog;
};
/* CPUMAP map-value layout
*
* The struct data-layout of map-value is a configuration interface.
* New members can only be added to the end of this structure.
*/
struct bpf_cpumap_val {
__u32 qsize; /* queue size to remote target CPU */
};
enum sk_action {
SK_DROP = 0,
SK_PASS,