netdev - [PATCH net-next 1/2] inet: constify inet

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Message-Id: <20201109231349.20946-2-eric.dumazet@gmail.com>
Date:   Mon,  9 Nov 2020 15:13:48 -0800
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>,
        Alexander Lobakin <alobakin@...me>
Subject: [PATCH net-next 1/2] inet: constify inet_sdif() argument

From: Eric Dumazet <edumazet@...gle.com>

inet_sdif() does not modify the skb.

This will permit propagating the const qualifier in
udp{4|6}_lib_lookup_skb() functions.

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
Cc: Alexander Lobakin <alobakin@...me>
---
 include/net/ip.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/net/ip.h b/include/net/ip.h
index 2d6b985d11ccaa75827b3a15ac3f898d7a193242..e20874059f826eb0f9e899aed556bfbc9c9d71e8 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -99,7 +99,7 @@ static inline void ipcm_init_sk(struct ipcm_cookie *ipcm,
 #define PKTINFO_SKB_CB(skb) ((struct in_pktinfo *)((skb)->cb))
 
 /* return enslaved device index if relevant */
-static inline int inet_sdif(struct sk_buff *skb)
+static inline int inet_sdif(const struct sk_buff *skb)
 {
 #if IS_ENABLED(CONFIG_NET_L3_MASTER_DEV)
 	if (skb && ipv4_l3mdev_skb(IPCB(skb)->flags))
-- 
2.29.2.222.g5d2a92d10f8-goog