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netfilter: nft_fib: Fix existence check support

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NFTA_FIB_F_PRESENT flag was not always honored since eval functions did
not call nft_fib_store_result in all cases.

Given that in all callsites there is a struct net_device pointer
available which holds the interface data to be stored in destination
register, simplify nft_fib_store_result() to just accept that pointer
instead of the nft_pktinfo pointer and interface index. This also
allows to drop the index to interface lookup previously needed to get
the name associated with given index.

Fixes: 055c4b34b9 ("netfilter: nft_fib: Support existence check")
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Phil Sutter 2019-05-15 20:15:32 +02:00 • committed by Pablo Neira Ayuso
commit e633508a95
4 changed files with 9 additions and 38 deletions
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2
include/net/netfilter/nft_fib.h
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@ -34,5 +34,5 @@ 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, const struct nft_fib *priv,
const struct nft_pktinfo *pkt, int index);
const struct net_device *dev);
#endif