linux-kernel - [PATCH 4.19 357/361] net: sched: Remove TCA

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Date:   Sun, 11 Nov 2018 14:21:44 -0800
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Marco Berizzi <pupilla@...ero.it>,
        David Ahern <dsahern@...il.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 4.19 357/361] net: sched: Remove TCA_OPTIONS from policy

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: David Ahern <dsahern@...il.com>

commit e72bde6b66299602087c8c2350d36a525e75d06e upstream.

Marco reported an error with hfsc:
root@...imero:~# tc qdisc add dev eth0 root handle 1:0 hfsc default 1
Error: Attribute failed policy validation.

Apparently a few implementations pass TCA_OPTIONS as a binary instead
of nested attribute, so drop TCA_OPTIONS from the policy.

Fixes: 8b4c3cdd9dd8 ("net: sched: Add policy validation for tc attributes")
Reported-by: Marco Berizzi <pupilla@...ero.it>
Signed-off-by: David Ahern <dsahern@...il.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 net/sched/sch_api.c |    1 -
 1 file changed, 1 deletion(-)

--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -1309,7 +1309,6 @@ check_loop_fn(struct Qdisc *q, unsigned

 const struct nla_policy rtm_tca_policy[TCA_MAX + 1] = {
 	[TCA_KIND]		= { .type = NLA_STRING },
-	[TCA_OPTIONS]		= { .type = NLA_NESTED },
 	[TCA_RATE]		= { .type = NLA_BINARY,
 				    .len = sizeof(struct tc_estimator) },
 	[TCA_STAB]		= { .type = NLA_NESTED },