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netfilter: nf_tables: add rescheduling points during loop detection walks
[ 81ea010667
]
Add explicit rescheduling points during ruleset walk.
Switching to a faster algorithm is possible but this is a much
smaller change, suitable for nf tree.
Link: https://bugzilla.netfilter.org/show_bug.cgi?id=1460
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 6 additions and 0 deletions
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@ -2552,6 +2552,8 @@ int nft_chain_validate(const struct nft_ctx *ctx, const struct nft_chain *chain)
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if (err < 0)
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return err;
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}
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cond_resched();
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}
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return 0;
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@ -6956,9 +6958,13 @@ static int nf_tables_check_loops(const struct nft_ctx *ctx,
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break;
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}
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}
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cond_resched();
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}
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list_for_each_entry(set, &ctx->table->sets, list) {
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cond_resched();
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if (!nft_is_active_next(ctx->net, set))
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continue;
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if (!(set->flags & NFT_SET_MAP) ||
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