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authorPetr Machata <petrm@mellanox.com>2020-03-13 01:10:57 +0200
committerDavid S. Miller <davem@davemloft.net>2020-03-14 21:03:46 -0700
commit0a7fad2376ba6b37c6b1a1072ed2a2381d82cd18 (patch)
treececaf961e1015055ee4f9912de73fbd5d04f0722 /include/net/pkt_cls.h
parentnet: sched: Allow extending set of supported RED flags (diff)
downloadlinux-dev-0a7fad2376ba6b37c6b1a1072ed2a2381d82cd18.tar.xz
linux-dev-0a7fad2376ba6b37c6b1a1072ed2a2381d82cd18.zip
net: sched: RED: Introduce an ECN nodrop mode
When the RED Qdisc is currently configured to enable ECN, the RED algorithm is used to decide whether a certain SKB should be marked. If that SKB is not ECN-capable, it is early-dropped. It is also possible to keep all traffic in the queue, and just mark the ECN-capable subset of it, as appropriate under the RED algorithm. Some switches support this mode, and some installations make use of it. To that end, add a new RED flag, TC_RED_NODROP. When the Qdisc is configured with this flag, non-ECT traffic is enqueued instead of being early-dropped. Signed-off-by: Petr Machata <petrm@mellanox.com> Reviewed-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/pkt_cls.h')
-rw-r--r--include/net/pkt_cls.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h
index dbc89452f90b..1db8b27d4515 100644
--- a/include/net/pkt_cls.h
+++ b/include/net/pkt_cls.h
@@ -740,6 +740,7 @@ struct tc_red_qopt_offload_params {
u32 limit;
bool is_ecn;
bool is_harddrop;
+ bool is_nodrop;
struct gnet_stats_queue *qstats;
};