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From: Stephen Hemminger <stephen@networkplumber.org>
To: dev@dpdk.org
Cc: Stephen Hemminger <stephen@networkplumber.org>, petrm@mellanox.com
Subject: [dpdk-dev] [PATCH 3/5] tc: fix compiler warnings in ip6 pedit
Date: Sun, 29 Nov 2020 09:54:35 -0800
Message-ID: <20201129175437.15346-4-stephen@networkplumber.org> (raw)
In-Reply-To: <20201129175437.15346-1-stephen@networkplumber.org>

Gcc-10 complains about referencing a zero size array.
This occurs because the array of keys is actually in the following
structure which is part of the overall selector.

The original code was safe, but better to just use the key
array directly.

Fixes: 2d9a8dc439ee ("tc: p_ip6: Support pedit of IPv6 dsfield")
Cc: petrm@mellanox.com
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 tc/p_ip6.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tc/p_ip6.c b/tc/p_ip6.c
index 71660c610c82..83a6ae8183a7 100644
--- a/tc/p_ip6.c
+++ b/tc/p_ip6.c
@@ -82,7 +82,7 @@ parse_ip6(int *argc_p, char ***argv_p,
 		/* Shift the field by 4 bits on success. */
 		if (!res) {
 			int nkeys = sel->sel.nkeys;
-			struct tc_pedit_key *key = &sel->sel.keys[nkeys - 1];
+			struct tc_pedit_key *key = &sel->keys[nkeys - 1];
 
 			key->mask = htonl(ntohl(key->mask) << 4 | 0xf);
 			key->val = htonl(ntohl(key->val) << 4);
-- 
2.29.2


  parent reply	other threads:[~2020-11-29 17:55 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-29 17:54 [dpdk-dev] [PATCH iproute2 0/5] fix warnings from gcc-10 Stephen Hemminger
2020-11-29 17:54 ` [dpdk-dev] [PATCH 1/5] devlink: fix unitialized warning Stephen Hemminger
2020-11-29 17:54 ` [dpdk-dev] [PATCH 2/5] bridge: fix string length warning Stephen Hemminger
2020-11-29 17:54 ` Stephen Hemminger [this message]
2020-11-29 17:54 ` [dpdk-dev] [PATCH 4/5] misc: fix compiler warning in ifstat and nstat Stephen Hemminger
2020-11-29 17:54 ` [dpdk-dev] [PATCH 5/5] f_u32: fix compiler gcc-10 compiler warning Stephen Hemminger
2020-11-30  0:17 ` [dpdk-dev] [PATCH iproute2 0/5] fix warnings from gcc-10 Stephen Hemminger

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