inet: constify inet_sdif() argument
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@google.com> Acked-by: Alexander Lobakin <alobakin@pm.me> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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@ -99,7 +99,7 @@ static inline void ipcm_init_sk(struct ipcm_cookie *ipcm,
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#define PKTINFO_SKB_CB(skb) ((struct in_pktinfo *)((skb)->cb))
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/* return enslaved device index if relevant */
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static inline int inet_sdif(struct sk_buff *skb)
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static inline int inet_sdif(const struct sk_buff *skb)
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{
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#if IS_ENABLED(CONFIG_NET_L3_MASTER_DEV)
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if (skb && ipv4_l3mdev_skb(IPCB(skb)->flags))
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