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netfilter: nf_tables: consolidate tracing invocations

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* JUMP and GOTO are equivalent except for JUMP pushing the current
  context to the stack

* RETURN and implicit RETURN (CONTINUE) are equivalent except that
  the logged rule number differs

Result:

  nft_do_chain              | -112
 1 function changed, 112 bytes removed, diff: -112

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Patrick McHardy 2015-03-03 20:10:05 +00:00 committed by Pablo Neira Ayuso
parent 01ef16c2dd
commit 354bf5a0d7
1 changed files with 4 additions and 7 deletions
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11
net/netfilter/nf_tables_core.c
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@ -170,26 +170,23 @@ next_rule:
switch (data[NFT_REG_VERDICT].verdict) {
case NFT_JUMP:
nft_trace_packet(pkt, chain, rulenum, NFT_TRACE_RULE);
BUG_ON(stackptr >= NFT_JUMP_STACK_SIZE);
jumpstack[stackptr].chain = chain;
jumpstack[stackptr].rule = rule;
jumpstack[stackptr].rulenum = rulenum;
stackptr++;
chain = data[NFT_REG_VERDICT].chain;
goto do_chain;
/* fall through */
case NFT_GOTO:
nft_trace_packet(pkt, chain, rulenum, NFT_TRACE_RULE);
chain = data[NFT_REG_VERDICT].chain;
goto do_chain;
case NFT_CONTINUE:
rulenum++;
/* fall through */
case NFT_RETURN:
nft_trace_packet(pkt, chain, rulenum, NFT_TRACE_RETURN);
break;
case NFT_CONTINUE:
nft_trace_packet(pkt, chain, ++rulenum, NFT_TRACE_RETURN);
break;
default:
WARN_ON(1);
}