[PATCH 09/17] netfilter: nft_meta: move time handling to helper
From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: 2019-12-30 11:22:04
Also in:
netfilter-devel
Subsystem:
netfilter, networking [general], the rest · Maintainers:
Pablo Neira Ayuso, Florian Westphal, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Florian Westphal <fw@strlen.de> reduce size of the (large) meta evaluation function. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> --- net/netfilter/nft_meta.c | 28 ++++++++++++++++++++++------ 1 file changed, 22 insertions(+), 6 deletions(-)
diff --git a/net/netfilter/nft_meta.c b/net/netfilter/nft_meta.c
index 9740b554fdb3..ba74f3ee7264 100644
--- a/net/netfilter/nft_meta.c
+++ b/net/netfilter/nft_meta.c@@ -33,8 +33,9 @@ static DEFINE_PER_CPU(struct rnd_state, nft_prandom_state); -static u8 nft_meta_weekday(time64_t secs) +static u8 nft_meta_weekday(void) { + time64_t secs = ktime_get_real_seconds(); unsigned int dse; u8 wday;
@@ -56,6 +57,25 @@ static u32 nft_meta_hour(time64_t secs) + tm.tm_sec; } +static noinline_for_stack void +nft_meta_get_eval_time(enum nft_meta_keys key, + u32 *dest) +{ + switch (key) { + case NFT_META_TIME_NS: + nft_reg_store64(dest, ktime_get_real_ns()); + break; + case NFT_META_TIME_DAY: + nft_reg_store8(dest, nft_meta_weekday()); + break; + case NFT_META_TIME_HOUR: + *dest = nft_meta_hour(ktime_get_real_seconds()); + break; + default: + break; + } +} + void nft_meta_get_eval(const struct nft_expr *expr, struct nft_regs *regs, const struct nft_pktinfo *pkt)
@@ -247,13 +267,9 @@ void nft_meta_get_eval(const struct nft_expr *expr, strncpy((char *)dest, out->rtnl_link_ops->kind, IFNAMSIZ); break; case NFT_META_TIME_NS: - nft_reg_store64(dest, ktime_get_real_ns()); - break; case NFT_META_TIME_DAY: - nft_reg_store8(dest, nft_meta_weekday(ktime_get_real_seconds())); - break; case NFT_META_TIME_HOUR: - *dest = nft_meta_hour(ktime_get_real_seconds()); + nft_meta_get_eval_time(priv->key, dest); break; default: WARN_ON(1);
--
2.11.0