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net/sched: Extend qdisc control block with tc control block

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BPF layer extends the qdisc control block via struct bpf_skb_data_end
and because of that there is no more room to add variables to the
qdisc layer control block without going over the skb->cb size.

Extend the qdisc control block with a tc control block,
and move all tc related variables to there as a pre-step for
extending the tc control block with additional members.

Signed-off-by: Paul Blakey <paulb@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Paul Blakey
2021-12-14 19:24:33 +02:00
committed by Jakub Kicinski
parent 8ca4090fec
commit ec624fe740
7 changed files with 34 additions and 17 deletions
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8
net/core/dev.c
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@@ -3941,8 +3941,8 @@ sch_handle_egress(struct sk_buff *skb, int *ret, struct net_device *dev)
return skb;
/* qdisc_skb_cb(skb)->pkt_len was already set by the caller. */
qdisc_skb_cb(skb)->mru = 0;
qdisc_skb_cb(skb)->post_ct = false;
tc_skb_cb(skb)->mru = 0;
tc_skb_cb(skb)->post_ct = false;
mini_qdisc_bstats_cpu_update(miniq, skb);
switch (tcf_classify(skb, miniq->block, miniq->filter_list, &cl_res, false)) {
@@ -5103,8 +5103,8 @@ sch_handle_ingress(struct sk_buff *skb, struct packet_type **pt_prev, int *ret,
}
qdisc_skb_cb(skb)->pkt_len = skb->len;
qdisc_skb_cb(skb)->mru = 0;
qdisc_skb_cb(skb)->post_ct = false;
tc_skb_cb(skb)->mru = 0;
tc_skb_cb(skb)->post_ct = false;
skb->tc_at_ingress = 1;
mini_qdisc_bstats_cpu_update(miniq, skb);