netdev - [PATCH wpan-next 1/2] 6lowpan: nhc: more constify api

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Date:   Sun, 12 Jun 2022 23:29:21 -0400
From:   Alexander Aring <aahringo@...hat.com>
To:     stefan@...enfreihafen.org
Cc:     linux-wpan@...r.kernel.org, linux-bluetooth@...r.kernel.org,
        netdev@...r.kernel.org, aahringo@...hat.com
Subject: [PATCH wpan-next 1/2] 6lowpan: nhc: more constify api

This patch adds an const to the return of lowpan_nhc_by_nexthdr(), as we
never modify nhcs.

Signed-off-by: Alexander Aring <aahringo@...hat.com>
---
 net/6lowpan/nhc.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/6lowpan/nhc.h b/net/6lowpan/nhc.h
index ab7b4977c32b..4ba6b2ffcb47 100644
--- a/net/6lowpan/nhc.h
+++ b/net/6lowpan/nhc.h
@@ -66,6 +66,7 @@ struct lowpan_nhc {
 
 	int		(*uncompress)(struct sk_buff *skb, size_t needed);
 	int		(*compress)(struct sk_buff *skb, u8 **hc_ptr);
+
 };
 
 /**
@@ -73,7 +74,7 @@ struct lowpan_nhc {
  *
  * @nexthdr: ipv6 nexthdr value.
  */
-struct lowpan_nhc *lowpan_nhc_by_nexthdr(u8 nexthdr);
+const struct lowpan_nhc *lowpan_nhc_by_nexthdr(u8 nexthdr);
 
 /**
  * lowpan_nhc_check_compression - checks if we support compression format. If
-- 
2.31.1