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| author | Petr Machata <petrm@nvidia.com> | 2021-10-19 11:07:04 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-10-19 12:24:51 +0100 |
| commit | 6b3efbfa4e68d84e6efbcd1ff4e98f5ba1da4307 (patch) | |
| tree | 721b4a5c0bc8240264f5359690b3643b46bbb9da | |
| parent | aaa5570612b1f1b9e4841ec54163bdeec1f451e7 (diff) | |
| download | linux-6b3efbfa4e68d84e6efbcd1ff4e98f5ba1da4307.tar.gz linux-6b3efbfa4e68d84e6efbcd1ff4e98f5ba1da4307.tar.bz2 linux-6b3efbfa4e68d84e6efbcd1ff4e98f5ba1da4307.zip | |
net: sch_tbf: Add a graft command
As another qdisc is linked to the TBF, the latter should issue an event to
give drivers a chance to react to the grafting. In other qdiscs, this event
is called GRAFT, so follow suit with TBF as well.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/pkt_cls.h | 2 | ||||
| -rw-r--r-- | net/sched/sch_tbf.c | 16 |
2 files changed, 18 insertions, 0 deletions
diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h index 4a5833108083..193f88ebf629 100644 --- a/include/net/pkt_cls.h +++ b/include/net/pkt_cls.h @@ -977,6 +977,7 @@ enum tc_tbf_command { TC_TBF_REPLACE, TC_TBF_DESTROY, TC_TBF_STATS, + TC_TBF_GRAFT, }; struct tc_tbf_qopt_offload_replace_params { @@ -992,6 +993,7 @@ struct tc_tbf_qopt_offload { union { struct tc_tbf_qopt_offload_replace_params replace_params; struct tc_qopt_offload_stats stats; + u32 child_handle; }; }; diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c index 78e79029dc63..72102277449e 100644 --- a/net/sched/sch_tbf.c +++ b/net/sched/sch_tbf.c @@ -184,6 +184,20 @@ static int tbf_offload_dump(struct Qdisc *sch) return qdisc_offload_dump_helper(sch, TC_SETUP_QDISC_TBF, &qopt); } +static void tbf_offload_graft(struct Qdisc *sch, struct Qdisc *new, + struct Qdisc *old, struct netlink_ext_ack *extack) +{ + struct tc_tbf_qopt_offload graft_offload = { + .handle = sch->handle, + .parent = sch->parent, + .child_handle = new->handle, + .command = TC_TBF_GRAFT, + }; + + qdisc_offload_graft_helper(qdisc_dev(sch), sch, new, old, + TC_SETUP_QDISC_TBF, &graft_offload, extack); +} + /* GSO packet is too big, segment it so that tbf can transmit * each segment in time */ @@ -547,6 +561,8 @@ static int tbf_graft(struct Qdisc *sch, unsigned long arg, struct Qdisc *new, new = &noop_qdisc; *old = qdisc_replace(sch, new, &q->qdisc); + + tbf_offload_graft(sch, new, *old, extack); return 0; } |