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netfilter: nft_fib: Convert nft_fib4_eval() to dscp_t.

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Use ip4h_dscp() instead of reading iph->tos directly.

ip4h_dscp() returns a dscp_t value which is temporarily converted back
to __u8 with inet_dscp_to_dsfield(). When converting ->flowi4_tos to
dscp_t in the future, we'll only have to remove that
inet_dscp_to_dsfield() call.

Signed-off-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Guillaume Nault 2024-11-14 17:03:45 +01:00 committed by Pablo Neira Ayuso
parent f694ce6de5
commit f12b67cc7d
1 changed files with 2 additions and 1 deletions
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3
net/ipv4/netfilter/nft_fib_ipv4.c
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@ -11,6 +11,7 @@
#include <net/netfilter/nft_fib.h>
#include <net/inet_dscp.h>
#include <net/ip.h>
#include <net/ip_fib.h>
#include <net/route.h>
@ -107,7 +108,7 @@ void nft_fib4_eval(const struct nft_expr *expr, struct nft_regs *regs,
if (priv->flags & NFTA_FIB_F_MARK)
fl4.flowi4_mark = pkt->skb->mark;
fl4.flowi4_tos = iph->tos & INET_DSCP_MASK;
fl4.flowi4_tos = inet_dscp_to_dsfield(ip4h_dscp(iph));
if (priv->flags & NFTA_FIB_F_DADDR) {
fl4.daddr = iph->daddr;