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net: sched: introduce block mechanism to handle netif_keep_dst calls

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Couple of classifiers call netif_keep_dst directly on q->dev. That is
not possible to do directly for shared blocke where multiple qdiscs are
owning the block. So introduce a infrastructure to keep track of the
block owners in list and use this list to implement block variant of
netif_keep_dst.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko
2018-01-17 11:46:48 +01:00
committed by David S. Miller
parent 9d3aaff3d8
commit f36fe1c498
6 changed files with 76 additions and 4 deletions
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4
net/sched/cls_bpf.c
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@@ -392,8 +392,8 @@ static int cls_bpf_prog_from_efd(struct nlattr **tb, struct cls_bpf_prog *prog,
prog->bpf_name = name;
prog->filter = fp;
if (fp->dst_needed && !(tp->q->flags & TCQ_F_INGRESS))
netif_keep_dst(qdisc_dev(tp->q));
if (fp->dst_needed)
tcf_block_netif_keep_dst(tp->chain->block);
return 0;
}