Commit 01a0fc82 authored by Florian Westphal's avatar Florian Westphal Committed by Pablo Neira Ayuso
Browse files

netfilter: nft_meta: place rtclassid handling in a helper 



skb_dst is an inline helper with a WARN_ON(), so this is a bit more code
than it looks like.

Signed-off-by: default avatarFlorian Westphal <fw@strlen.de>
Signed-off-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
parent 6b2faee0

net/netfilter/nft_meta.c

+16 −6
Original line number Diff line number Diff line
@@ -273,6 +273,20 @@ static noinline u32 nft_prandom_u32(void) 
	return prandom_u32_state(state);

}



#ifdef CONFIG_IP_ROUTE_CLASSID

static noinline bool

nft_meta_get_eval_rtclassid(const struct sk_buff *skb, u32 *dest)

{

	const struct dst_entry *dst = skb_dst(skb);



	if (!dst)

		return false;



	*dest = dst->tclassid;

	return true;

}

#endif



void nft_meta_get_eval(const struct nft_expr *expr,

		       struct nft_regs *regs,

		       const struct nft_pktinfo *pkt)
@@ -319,14 +333,10 @@ void nft_meta_get_eval(const struct nft_expr *expr, 
			goto err;

		break;

#ifdef CONFIG_IP_ROUTE_CLASSID

	case NFT_META_RTCLASSID: {

		const struct dst_entry *dst = skb_dst(skb);



		if (dst == NULL)

	case NFT_META_RTCLASSID:

		if (!nft_meta_get_eval_rtclassid(skb, dest))

			goto err;

		*dest = dst->tclassid;

		break;

	}

#endif

#ifdef CONFIG_NETWORK_SECMARK

	case NFT_META_SECMARK:

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