netdev - [PATCH net-next 05/13] net: move secpath_exist helper to sk

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Message-Id: <20181210145006.19098-6-fw@strlen.de>
Date:   Mon, 10 Dec 2018 15:49:58 +0100
From:   Florian Westphal <fw@...len.de>
To:     <netdev@...r.kernel.org>
Cc:     Florian Westphal <fw@...len.de>
Subject: [PATCH net-next 05/13] net: move secpath_exist helper to sk_buff.h

Future patch will remove skb->sp pointer.
To reduce noise in those patches, move existing helper to
sk_buff and use it in more places to ease skb->sp replacement later.

Signed-off-by: Florian Westphal <fw@...len.de>
---
 include/linux/skbuff.h   | 13 ++++++++++---
 include/net/xfrm.h       |  9 ---------
 net/netfilter/nft_meta.c |  2 +-
 3 files changed, 11 insertions(+), 13 deletions(-)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index d2d32c9fa715..da5f8226b55a 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -4074,12 +4074,19 @@ static inline void skb_init_secmark(struct sk_buff *skb)
 { }
 #endif
 
+static inline int secpath_exists(const struct sk_buff *skb)
+{
+#ifdef CONFIG_XFRM
+	return skb->sp != NULL;
+#else
+	return 0;
+#endif
+}
+
 static inline bool skb_irq_freeable(const struct sk_buff *skb)
 {
 	return !skb->destructor &&
-#if IS_ENABLED(CONFIG_XFRM)
-		!skb->sp &&
-#endif
+		!secpath_exists(skb) &&
 		!skb_nfct(skb) &&
 		!skb->_skb_refdst &&
 		!skb_has_frag_list(skb);
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 71b88b539f37..4e1d074dc69e 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -1101,15 +1101,6 @@ struct sec_path {
 	struct xfrm_offload	ovec[XFRM_MAX_OFFLOAD_DEPTH];
 };
 
-static inline int secpath_exists(struct sk_buff *skb)
-{
-#ifdef CONFIG_XFRM
-	return skb->sp != NULL;
-#else
-	return 0;
-#endif
-}
-
 static inline struct sec_path *
 secpath_get(struct sec_path *sp)
 {
diff --git a/net/netfilter/nft_meta.c b/net/netfilter/nft_meta.c
index 6180626c3f80..6df486c5ebd3 100644
--- a/net/netfilter/nft_meta.c
+++ b/net/netfilter/nft_meta.c
@@ -229,7 +229,7 @@ void nft_meta_get_eval(const struct nft_expr *expr,
 	}
 #ifdef CONFIG_XFRM
 	case NFT_META_SECPATH:
-		nft_reg_store8(dest, !!skb->sp);
+		nft_reg_store8(dest, secpath_exists(skb));
 		break;
 #endif
 #ifdef CONFIG_NF_TABLES_BRIDGE
-- 
2.19.2