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| author | Jakub Kicinski <jakub.kicinski@netronome.com> | 2018-11-12 14:58:10 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-11-14 08:51:27 -0800 |
| commit | 98b0e5f6842a9982a793f0837b1bd1495542a3d8 (patch) | |
| tree | d0621a7623f4ada26b60970e71062cb3ceaf9419 /net | |
| parent | 4f5681d088ba01f12f63160fa843c915e1ce1358 (diff) | |
| download | linux-98b0e5f6842a9982a793f0837b1bd1495542a3d8.tar.gz linux-98b0e5f6842a9982a793f0837b1bd1495542a3d8.tar.bz2 linux-98b0e5f6842a9982a793f0837b1bd1495542a3d8.zip | |
net: sched: provide notification for graft on root
Drivers are currently not notified when a Qdisc is grafted as root.
This requires special casing Qdiscs added with parent = TC_H_ROOT in
the driver. Also there is no notification sent to the driver when
an existing Qdisc is grafted as root.
Add this very simple notifications, drivers should now be able to
track their Qdisc tree fully.
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>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sched/sch_api.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c index f55bc50cd0a9..9c88cec7e8a2 100644 --- a/net/sched/sch_api.c +++ b/net/sched/sch_api.c @@ -860,6 +860,21 @@ void qdisc_offload_graft_helper(struct net_device *dev, struct Qdisc *sch, } EXPORT_SYMBOL(qdisc_offload_graft_helper); +static void qdisc_offload_graft_root(struct net_device *dev, + struct Qdisc *new, struct Qdisc *old, + struct netlink_ext_ack *extack) +{ + struct tc_root_qopt_offload graft_offload = { + .command = TC_ROOT_GRAFT, + .handle = new ? new->handle : 0, + .ingress = (new && new->flags & TCQ_F_INGRESS) || + (old && old->flags & TCQ_F_INGRESS), + }; + + qdisc_offload_graft_helper(dev, NULL, new, old, + TC_SETUP_ROOT_QDISC, &graft_offload, extack); +} + static int tc_fill_qdisc(struct sk_buff *skb, struct Qdisc *q, u32 clid, u32 portid, u32 seq, u16 flags, int event) { @@ -1026,6 +1041,8 @@ static int qdisc_graft(struct net_device *dev, struct Qdisc *parent, if (dev->flags & IFF_UP) dev_deactivate(dev); + qdisc_offload_graft_root(dev, new, old, extack); + if (new && new->ops->attach) goto skip; |