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netfilter: nf_tables: consolidate rule verdict trace call

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[ Upstream commit 4765473fefd4403b5eeca371637065b561522c50 ]

Add function to consolidate verdict tracing.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Pablo Neira Ayuso
2021-12-10 00:10:12 +01:00
committed by Greg Kroah-Hartman
parent cd962806c4
commit 1d7d74a824
1 changed files with 32 additions and 7 deletions
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39
net/netfilter/nf_tables_core.c
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@ -67,6 +67,36 @@ static void nft_cmp_fast_eval(const struct nft_expr *expr,
regs->verdict.code = NFT_BREAK;
}
static noinline void __nft_trace_verdict(struct nft_traceinfo *info,
const struct nft_chain *chain,
const struct nft_regs *regs)
{
enum nft_trace_types type;
switch (regs->verdict.code) {
case NFT_CONTINUE:
case NFT_RETURN:
type = NFT_TRACETYPE_RETURN;
break;
default:
type = NFT_TRACETYPE_RULE;
break;
}
__nft_trace_packet(info, chain, type);
}
static inline void nft_trace_verdict(struct nft_traceinfo *info,
const struct nft_chain *chain,
const struct nft_rule *rule,
const struct nft_regs *regs)
{
if (static_branch_unlikely(&nft_trace_enabled)) {
info->rule = rule;
__nft_trace_verdict(info, chain, regs);
}
}
static bool nft_payload_fast_eval(const struct nft_expr *expr,
struct nft_regs *regs,
const struct nft_pktinfo *pkt)
@ -207,13 +237,13 @@ next_rule:
break;
}
nft_trace_verdict(&info, chain, rule, &regs);
switch (regs.verdict.code & NF_VERDICT_MASK) {
case NF_ACCEPT:
case NF_DROP:
case NF_QUEUE:
case NF_STOLEN:
nft_trace_packet(&info, chain, rule,
NFT_TRACETYPE_RULE);
return regs.verdict.code;
}
@ -226,15 +256,10 @@ next_rule:
stackptr++;
fallthrough;
case NFT_GOTO:
nft_trace_packet(&info, chain, rule,
NFT_TRACETYPE_RULE);
chain = regs.verdict.chain;
goto do_chain;
case NFT_CONTINUE:
case NFT_RETURN:
nft_trace_packet(&info, chain, rule,
NFT_TRACETYPE_RETURN);
break;
default:
WARN_ON(1);