netdev - [RFC PATCH 01/10] net: pkt

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Message-ID: <6292bbe365be8a914b25f4559be5c8e5fa72a2a2.1574253236.git.petrm@mellanox.com>
Date:   Wed, 20 Nov 2019 13:05:09 +0000
From:   Petr Machata <petrm@...lanox.com>
To:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC:     Petr Machata <petrm@...lanox.com>,
        Ido Schimmel <idosch@...lanox.com>,
        Roopa Prabhu <roopa@...ulusnetworks.com>
Subject: [RFC PATCH 01/10] net: pkt_cls: Clarify a comment

The bit about negating HW backlog left me scratching my head. Clarify the
comment.

Signed-off-by: Petr Machata <petrm@...lanox.com>
---
 include/net/pkt_cls.h | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h
index e553fc80eb23..a7c5d492bc04 100644
--- a/include/net/pkt_cls.h
+++ b/include/net/pkt_cls.h
@@ -791,9 +791,8 @@ enum tc_prio_command {
 struct tc_prio_qopt_offload_params {
 	int bands;
 	u8 priomap[TC_PRIO_MAX + 1];
-	/* In case that a prio qdisc is offloaded and now is changed to a
-	 * non-offloadedable config, it needs to update the backlog & qlen
-	 * values to negate the HW backlog & qlen values (and only them).
+	/* At the point of un-offloading the Qdisc, the reported backlog and
+	 * qlen need to be reduced by the portion that is in HW.
 	 */
 	struct gnet_stats_queue *qstats;
 };
-- 
2.20.1