nfp: abm: remember which Qdisc is root

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Keep track of which Qdisc is currently root.  We need to implement
TC_SETUP_ROOT_QDISC handling, and for completeness also clear the
root Qdisc pointer when it's freed.  TC_SETUP_ROOT_QDISC isn't always
sent when device is dismantled.

Remembering the root Qdisc will allow us to build the entire hierarchy
in following patches.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

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Jakub Kicinski 2018-11-12 14:58:11 -08:00 • committed by David S. Miller

parent 98b0e5f684

commit 1853125889

3 changed files with 19 additions and 0 deletions

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2

drivers/net/ethernet/netronome/nfp/abm/main.c

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4

drivers/net/ethernet/netronome/nfp/abm/main.h

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13

drivers/net/ethernet/netronome/nfp/abm/qdisc.c

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