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authorPhil Sutter <phil@nwl.cc>2019-05-15 21:15:32 +0300
committerPablo Neira Ayuso <pablo@netfilter.org>2019-05-21 17:10:38 +0300
commite633508a95289489d28faacb68b32c3e7e68ef6f (patch)
tree20b9a690f78aad5c43b12e7569cf3e0e26a44169 /net/ipv4
parent946c0d8e6ed43dae6527e878d0077c1e11015db0 (diff)
downloadlinux-e633508a95289489d28faacb68b32c3e7e68ef6f.tar.xz
netfilter: nft_fib: Fix existence check support
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: 055c4b34b94f6 ("netfilter: nft_fib: Support existence check") Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/netfilter/nft_fib_ipv4.c23
1 files changed, 3 insertions, 20 deletions
diff --git a/net/ipv4/netfilter/nft_fib_ipv4.c b/net/ipv4/netfilter/nft_fib_ipv4.c
index 94eb25bc8d7e..c8888e52591f 100644
--- a/net/ipv4/netfilter/nft_fib_ipv4.c
+++ b/net/ipv4/netfilter/nft_fib_ipv4.c
@@ -58,11 +58,6 @@ void nft_fib4_eval_type(const struct nft_expr *expr, struct nft_regs *regs,
}
EXPORT_SYMBOL_GPL(nft_fib4_eval_type);
-static int get_ifindex(const struct net_device *dev)
-{
- return dev ? dev->ifindex : 0;
-}
-
void nft_fib4_eval(const struct nft_expr *expr, struct nft_regs *regs,
const struct nft_pktinfo *pkt)
{
@@ -94,8 +89,7 @@ void nft_fib4_eval(const struct nft_expr *expr, struct nft_regs *regs,
if (nft_hook(pkt) == NF_INET_PRE_ROUTING &&
nft_fib_is_loopback(pkt->skb, nft_in(pkt))) {
- nft_fib_store_result(dest, priv, pkt,
- nft_in(pkt)->ifindex);
+ nft_fib_store_result(dest, priv, nft_in(pkt));
return;
}
@@ -108,8 +102,7 @@ void nft_fib4_eval(const struct nft_expr *expr, struct nft_regs *regs,
if (ipv4_is_zeronet(iph->saddr)) {
if (ipv4_is_lbcast(iph->daddr) ||
ipv4_is_local_multicast(iph->daddr)) {
- nft_fib_store_result(dest, priv, pkt,
- get_ifindex(pkt->skb->dev));
+ nft_fib_store_result(dest, priv, pkt->skb->dev);
return;
}
}
@@ -150,17 +143,7 @@ void nft_fib4_eval(const struct nft_expr *expr, struct nft_regs *regs,
found = oif;
}
- switch (priv->result) {
- case NFT_FIB_RESULT_OIF:
- *dest = found->ifindex;
- break;
- case NFT_FIB_RESULT_OIFNAME:
- strncpy((char *)dest, found->name, IFNAMSIZ);
- break;
- default:
- WARN_ON_ONCE(1);
- break;
- }
+ nft_fib_store_result(dest, priv, found);
}
EXPORT_SYMBOL_GPL(nft_fib4_eval);