Patch "netfilter: nft_dynset: fix element timeout for HZ != 1000" has been added to the 4.8-stable tree

Patch "netfilter: nft_dynset: fix element timeout for HZ != 1000" has been added to the 4.8-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    netfilter: nft_dynset: fix element timeout for HZ != 1000

to the 4.8-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     netfilter-nft_dynset-fix-element-timeout-for-hz-1000.patch
and it can be found in the queue-4.8 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From a8b1e36d0d1d6f51490e7adce35367ed6adb10e7 Mon Sep 17 00:00:00 2001
From: "Anders K. Pedersen" <akp@cohaesio.com>
Date: Sun, 9 Oct 2016 13:49:02 +0000
Subject: netfilter: nft_dynset: fix element timeout for HZ != 1000

From: Anders K. Pedersen <akp@cohaesio.com>

commit a8b1e36d0d1d6f51490e7adce35367ed6adb10e7 upstream.

With HZ=100 element timeout in dynamic sets (i.e. flow tables) is 10 times
higher than configured.

Add proper conversion to/from jiffies, when interacting with userspace.

I tested this on Linux 4.8.1, and it applies cleanly to current nf and
nf-next trees.

Fixes: 22fe54d5fefc ("netfilter: nf_tables: add support for dynamic set updates")
Signed-off-by: Anders K. Pedersen <akp@cohaesio.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/netfilter/nft_dynset.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/net/netfilter/nft_dynset.c
+++ b/net/netfilter/nft_dynset.c
@@ -143,7 +143,8 @@ static int nft_dynset_init(const struct
 	if (tb[NFTA_DYNSET_TIMEOUT] != NULL) {
 		if (!(set->flags & NFT_SET_TIMEOUT))
 			return -EINVAL;
-		timeout = be64_to_cpu(nla_get_be64(tb[NFTA_DYNSET_TIMEOUT]));
+		timeout = msecs_to_jiffies(be64_to_cpu(nla_get_be64(
+						tb[NFTA_DYNSET_TIMEOUT])));
 	}
 
 	priv->sreg_key = nft_parse_register(tb[NFTA_DYNSET_SREG_KEY]);
@@ -230,7 +231,8 @@ static int nft_dynset_dump(struct sk_buf
 		goto nla_put_failure;
 	if (nla_put_string(skb, NFTA_DYNSET_SET_NAME, priv->set->name))
 		goto nla_put_failure;
-	if (nla_put_be64(skb, NFTA_DYNSET_TIMEOUT, cpu_to_be64(priv->timeout),
+	if (nla_put_be64(skb, NFTA_DYNSET_TIMEOUT,
+			 cpu_to_be64(jiffies_to_msecs(priv->timeout)),
 			 NFTA_DYNSET_PAD))
 		goto nla_put_failure;
 	if (priv->expr && nft_expr_dump(skb, NFTA_DYNSET_EXPR, priv->expr))


Patches currently in stable-queue which might be from akp@cohaesio.com are

queue-4.8/netfilter-nft_dynset-fix-element-timeout-for-hz-1000.patch