[PATCH net 2/4] netfilter: nft_dynset: fix timeouts later than 23 days

[Pablo Neira Ayuso]

Use nf_msecs_to_jiffies64 and nf_jiffies64_to_msecs as provided by
8e1102d5a159 ("netfilter: nf_tables: support timeouts larger than 23
days"), otherwise ruleset listing breaks.

Fixes: a8b1e36d0d1d ("netfilter: nft_dynset: fix element timeout for HZ != 
1000")
Signed-off-by: Pablo Neira Ayuso <pa...@netfilter.org>
---
 include/net/netfilter/nf_tables.h | 4 ++++
 net/netfilter/nf_tables_api.c     | 4 ++--
 net/netfilter/nft_dynset.c        | 8 +++++---
 3 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/include/net/netfilter/nf_tables.h 
b/include/net/netfilter/nf_tables.h
index 55b4cadf290a..c1c0a4ff92ae 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -1524,4 +1524,8 @@ void __init nft_chain_route_init(void);
 void nft_chain_route_fini(void);
 
 void nf_tables_trans_destroy_flush_work(void);
+
+int nf_msecs_to_jiffies64(const struct nlattr *nla, u64 *result);
+__be64 nf_jiffies64_to_msecs(u64 input);
+
 #endif /* _NET_NF_TABLES_H */
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 23abf1578594..c2f59879a48d 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -3719,7 +3719,7 @@ static int nf_tables_set_alloc_name(struct nft_ctx *ctx, 
struct nft_set *set,
        return 0;
 }
 
-static int nf_msecs_to_jiffies64(const struct nlattr *nla, u64 *result)
+int nf_msecs_to_jiffies64(const struct nlattr *nla, u64 *result)
 {
        u64 ms = be64_to_cpu(nla_get_be64(nla));
        u64 max = (u64)(~((u64)0));
@@ -3733,7 +3733,7 @@ static int nf_msecs_to_jiffies64(const struct nlattr 
*nla, u64 *result)
        return 0;
 }
 
-static __be64 nf_jiffies64_to_msecs(u64 input)
+__be64 nf_jiffies64_to_msecs(u64 input)
 {
        return cpu_to_be64(jiffies64_to_msecs(input));
 }
diff --git a/net/netfilter/nft_dynset.c b/net/netfilter/nft_dynset.c
index 64ca13a1885b..9af4f93c7f0e 100644
--- a/net/netfilter/nft_dynset.c
+++ b/net/netfilter/nft_dynset.c
@@ -157,8 +157,10 @@ static int nft_dynset_init(const struct nft_ctx *ctx,
        if (tb[NFTA_DYNSET_TIMEOUT] != NULL) {
                if (!(set->flags & NFT_SET_TIMEOUT))
                        return -EINVAL;
-               timeout = msecs_to_jiffies(be64_to_cpu(nla_get_be64(
-                                               tb[NFTA_DYNSET_TIMEOUT])));
+
+               err = nf_msecs_to_jiffies64(tb[NFTA_DYNSET_TIMEOUT], &timeout);
+               if (err)
+                       return err;
        }
 
        priv->sreg_key = nft_parse_register(tb[NFTA_DYNSET_SREG_KEY]);
@@ -267,7 +269,7 @@ static int nft_dynset_dump(struct sk_buff *skb, const 
struct nft_expr *expr)
        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(jiffies_to_msecs(priv->timeout)),
+                        nf_jiffies64_to_msecs(priv->timeout),
                         NFTA_DYNSET_PAD))
                goto nla_put_failure;
        if (priv->expr && nft_expr_dump(skb, NFTA_DYNSET_EXPR, priv->expr))
-- 
2.20.1