On 11/04/2017 10:55 AM, Jiri Pirko wrote:
Fri, Nov 03, 2017 at 09:15:54PM CET, dan...@iogearbox.net wrote:
On 11/03/2017 06:19 PM, Jiri Pirko wrote:
From: Jiri Pirko <j...@mellanox.com>
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 <j...@mellanox.com>
[...]
+struct tcf_block_owner_item {
+ struct list_head list;
+ struct Qdisc *q;
+ enum tcf_block_binder_type binder_type;
+};
+
+static void
+tcf_block_owner_netif_keep_dst(struct tcf_block *block,
+ struct Qdisc *q,
+ enum tcf_block_binder_type binder_type)
+{
+ if (block->keep_dst &&
+ binder_type != TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
Why we need to keep dst on TCF_BLOCK_BINDER_TYPE_CLSACT_EGRESS ?
I presume this enum means sch_handle_egress() ? dst is dropped
later ...
This is because of the bpf check:
if (fp->dst_needed && !(tp->q->flags & TCQ_F_INGRESS))
netif_keep_dst(qdisc_dev(tp->q));
I just maintain the same logic here.
No, that's a wrong claim, really ...
clsact in general hooks into the same logic as ingress, so TC_H_CLSACT
as major needs to reuse TC_H_INGRESS, and qdiscs set up as such set
TCQ_F_INGRESS as flags. For clsact that means both your block binder
types for clsact here (ingress/egress).
Please make sure that your other changes don't have similar assumption.
