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netfilter: nft_fib: Support existence check

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Instead of the actual interface index or name, set destination register
to just 1 or 0 depending on whether the lookup succeeded or not if
NFTA_FIB_F_PRESENT was set in userspace.

Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Phil Sutter
2017-03-10 18:08:02 +01:00
committed by Pablo Neira Ayuso
parent 1a64edf54f
commit 055c4b34b9
5 changed files with 14 additions and 9 deletions
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2
include/net/netfilter/nft_fib.h
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@@ -32,6 +32,6 @@ void nft_fib6_eval_type(const struct nft_expr *expr, struct nft_regs *regs,
void nft_fib6_eval(const struct nft_expr *expr, struct nft_regs *regs,
const struct nft_pktinfo *pkt);
void nft_fib_store_result(void *reg, enum nft_fib_result r,
void nft_fib_store_result(void *reg, const struct nft_fib *priv,
const struct nft_pktinfo *pkt, int index);
#endif