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Message-Id: <20201104141149.30082-7-pablo@netfilter.org>
Date: Wed, 4 Nov 2020 15:11:47 +0100
From: Pablo Neira Ayuso <pablo@...filter.org>
To: netfilter-devel@...r.kernel.org
Cc: davem@...emloft.net, netdev@...r.kernel.org, kuba@...nel.org
Subject: [PATCH net-next 6/8] netfilter: ipset: Expose the initval hash parameter to userspace
From: Jozsef Kadlecsik <kadlec@...filter.org>
It makes possible to reproduce exactly the same set after a save/restore.
Signed-off-by: Jozsef Kadlecsik <kadlec@...filter.org>
Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
---
include/uapi/linux/netfilter/ipset/ip_set.h | 2 +-
net/netfilter/ipset/ip_set_hash_gen.h | 13 +++++++++----
net/netfilter/ipset/ip_set_hash_ip.c | 3 ++-
net/netfilter/ipset/ip_set_hash_ipmac.c | 3 ++-
net/netfilter/ipset/ip_set_hash_ipmark.c | 3 ++-
net/netfilter/ipset/ip_set_hash_ipport.c | 3 ++-
net/netfilter/ipset/ip_set_hash_ipportip.c | 3 ++-
net/netfilter/ipset/ip_set_hash_ipportnet.c | 3 ++-
net/netfilter/ipset/ip_set_hash_mac.c | 3 ++-
net/netfilter/ipset/ip_set_hash_net.c | 3 ++-
net/netfilter/ipset/ip_set_hash_netiface.c | 3 ++-
net/netfilter/ipset/ip_set_hash_netnet.c | 3 ++-
net/netfilter/ipset/ip_set_hash_netport.c | 3 ++-
net/netfilter/ipset/ip_set_hash_netportnet.c | 3 ++-
14 files changed, 34 insertions(+), 17 deletions(-)
diff --git a/include/uapi/linux/netfilter/ipset/ip_set.h b/include/uapi/linux/netfilter/ipset/ip_set.h
index 398f7b909b7d..6397d75899bc 100644
--- a/include/uapi/linux/netfilter/ipset/ip_set.h
+++ b/include/uapi/linux/netfilter/ipset/ip_set.h
@@ -92,7 +92,7 @@ enum {
/* Reserve empty slots */
IPSET_ATTR_CADT_MAX = 16,
/* Create-only specific attributes */
- IPSET_ATTR_GC,
+ IPSET_ATTR_INITVAL, /* was unused IPSET_ATTR_GC */
IPSET_ATTR_HASHSIZE,
IPSET_ATTR_MAXELEM,
IPSET_ATTR_NETMASK,
diff --git a/net/netfilter/ipset/ip_set_hash_gen.h b/net/netfilter/ipset/ip_set_hash_gen.h
index 4e3544442b26..5f1208ad049e 100644
--- a/net/netfilter/ipset/ip_set_hash_gen.h
+++ b/net/netfilter/ipset/ip_set_hash_gen.h
@@ -1301,9 +1301,11 @@ mtype_head(struct ip_set *set, struct sk_buff *skb)
if (nla_put_u32(skb, IPSET_ATTR_MARKMASK, h->markmask))
goto nla_put_failure;
#endif
- if (set->flags & IPSET_CREATE_FLAG_BUCKETSIZE &&
- nla_put_u8(skb, IPSET_ATTR_BUCKETSIZE, h->bucketsize))
- goto nla_put_failure;
+ if (set->flags & IPSET_CREATE_FLAG_BUCKETSIZE) {
+ if (nla_put_u8(skb, IPSET_ATTR_BUCKETSIZE, h->bucketsize) ||
+ nla_put_net32(skb, IPSET_ATTR_INITVAL, htonl(h->initval)))
+ goto nla_put_failure;
+ }
if (nla_put_net32(skb, IPSET_ATTR_REFERENCES, htonl(set->ref)) ||
nla_put_net32(skb, IPSET_ATTR_MEMSIZE, htonl(memsize)) ||
nla_put_net32(skb, IPSET_ATTR_ELEMENTS, htonl(elements)))
@@ -1546,7 +1548,10 @@ IPSET_TOKEN(HTYPE, _create)(struct net *net, struct ip_set *set,
#ifdef IP_SET_HASH_WITH_MARKMASK
h->markmask = markmask;
#endif
- get_random_bytes(&h->initval, sizeof(h->initval));
+ if (tb[IPSET_ATTR_INITVAL])
+ h->initval = ntohl(nla_get_be32(tb[IPSET_ATTR_INITVAL]));
+ else
+ get_random_bytes(&h->initval, sizeof(h->initval));
h->bucketsize = AHASH_MAX_SIZE;
if (tb[IPSET_ATTR_BUCKETSIZE]) {
h->bucketsize = nla_get_u8(tb[IPSET_ATTR_BUCKETSIZE]);
diff --git a/net/netfilter/ipset/ip_set_hash_ip.c b/net/netfilter/ipset/ip_set_hash_ip.c
index 0495d515c498..d1bef23fd4f5 100644
--- a/net/netfilter/ipset/ip_set_hash_ip.c
+++ b/net/netfilter/ipset/ip_set_hash_ip.c
@@ -24,7 +24,7 @@
/* 2 Comments support */
/* 3 Forceadd support */
/* 4 skbinfo support */
-#define IPSET_TYPE_REV_MAX 5 /* bucketsize support */
+#define IPSET_TYPE_REV_MAX 5 /* bucketsize, initval support */
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@...filter.org>");
@@ -283,6 +283,7 @@ static struct ip_set_type hash_ip_type __read_mostly = {
.create_policy = {
[IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
[IPSET_ATTR_MAXELEM] = { .type = NLA_U32 },
+ [IPSET_ATTR_INITVAL] = { .type = NLA_U32 },
[IPSET_ATTR_BUCKETSIZE] = { .type = NLA_U8 },
[IPSET_ATTR_RESIZE] = { .type = NLA_U8 },
[IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
diff --git a/net/netfilter/ipset/ip_set_hash_ipmac.c b/net/netfilter/ipset/ip_set_hash_ipmac.c
index 2655501f9fe3..467c59a83c0a 100644
--- a/net/netfilter/ipset/ip_set_hash_ipmac.c
+++ b/net/netfilter/ipset/ip_set_hash_ipmac.c
@@ -23,7 +23,7 @@
#include <linux/netfilter/ipset/ip_set_hash.h>
#define IPSET_TYPE_REV_MIN 0
-#define IPSET_TYPE_REV_MAX 1 /* bucketsize support */
+#define IPSET_TYPE_REV_MAX 1 /* bucketsize, initval support */
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Tomasz Chilinski <tomasz.chilinski@...lan.com>");
@@ -273,6 +273,7 @@ static struct ip_set_type hash_ipmac_type __read_mostly = {
.create_policy = {
[IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
[IPSET_ATTR_MAXELEM] = { .type = NLA_U32 },
+ [IPSET_ATTR_INITVAL] = { .type = NLA_U32 },
[IPSET_ATTR_BUCKETSIZE] = { .type = NLA_U8 },
[IPSET_ATTR_RESIZE] = { .type = NLA_U8 },
[IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
diff --git a/net/netfilter/ipset/ip_set_hash_ipmark.c b/net/netfilter/ipset/ip_set_hash_ipmark.c
index 5bbed85d0e47..18346d18aa16 100644
--- a/net/netfilter/ipset/ip_set_hash_ipmark.c
+++ b/net/netfilter/ipset/ip_set_hash_ipmark.c
@@ -22,7 +22,7 @@
#define IPSET_TYPE_REV_MIN 0
/* 1 Forceadd support */
/* 2 skbinfo support */
-#define IPSET_TYPE_REV_MAX 3 /* bucketsize support */
+#define IPSET_TYPE_REV_MAX 3 /* bucketsize, initval support */
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Vytas Dauksa <vytas.dauksa@...othwall.net>");
@@ -281,6 +281,7 @@ static struct ip_set_type hash_ipmark_type __read_mostly = {
[IPSET_ATTR_MARKMASK] = { .type = NLA_U32 },
[IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
[IPSET_ATTR_MAXELEM] = { .type = NLA_U32 },
+ [IPSET_ATTR_INITVAL] = { .type = NLA_U32 },
[IPSET_ATTR_BUCKETSIZE] = { .type = NLA_U8 },
[IPSET_ATTR_RESIZE] = { .type = NLA_U8 },
[IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
diff --git a/net/netfilter/ipset/ip_set_hash_ipport.c b/net/netfilter/ipset/ip_set_hash_ipport.c
index c1ac2e89e2d3..e1ca11196515 100644
--- a/net/netfilter/ipset/ip_set_hash_ipport.c
+++ b/net/netfilter/ipset/ip_set_hash_ipport.c
@@ -26,7 +26,7 @@
/* 3 Comments support added */
/* 4 Forceadd support added */
/* 5 skbinfo support added */
-#define IPSET_TYPE_REV_MAX 6 /* bucketsize support added */
+#define IPSET_TYPE_REV_MAX 6 /* bucketsize, initval support added */
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@...filter.org>");
@@ -347,6 +347,7 @@ static struct ip_set_type hash_ipport_type __read_mostly = {
.create_policy = {
[IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
[IPSET_ATTR_MAXELEM] = { .type = NLA_U32 },
+ [IPSET_ATTR_INITVAL] = { .type = NLA_U32 },
[IPSET_ATTR_BUCKETSIZE] = { .type = NLA_U8 },
[IPSET_ATTR_RESIZE] = { .type = NLA_U8 },
[IPSET_ATTR_PROTO] = { .type = NLA_U8 },
diff --git a/net/netfilter/ipset/ip_set_hash_ipportip.c b/net/netfilter/ipset/ip_set_hash_ipportip.c
index d3f4a672986e..ab179e064597 100644
--- a/net/netfilter/ipset/ip_set_hash_ipportip.c
+++ b/net/netfilter/ipset/ip_set_hash_ipportip.c
@@ -26,7 +26,7 @@
/* 3 Comments support added */
/* 4 Forceadd support added */
/* 5 skbinfo support added */
-#define IPSET_TYPE_REV_MAX 6 /* bucketsize support added */
+#define IPSET_TYPE_REV_MAX 6 /* bucketsize, initval support added */
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@...filter.org>");
@@ -362,6 +362,7 @@ static struct ip_set_type hash_ipportip_type __read_mostly = {
.create_policy = {
[IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
[IPSET_ATTR_MAXELEM] = { .type = NLA_U32 },
+ [IPSET_ATTR_INITVAL] = { .type = NLA_U32 },
[IPSET_ATTR_BUCKETSIZE] = { .type = NLA_U8 },
[IPSET_ATTR_RESIZE] = { .type = NLA_U8 },
[IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
diff --git a/net/netfilter/ipset/ip_set_hash_ipportnet.c b/net/netfilter/ipset/ip_set_hash_ipportnet.c
index 8f7fe360736a..8f075b44cf64 100644
--- a/net/netfilter/ipset/ip_set_hash_ipportnet.c
+++ b/net/netfilter/ipset/ip_set_hash_ipportnet.c
@@ -28,7 +28,7 @@
/* 5 Comments support added */
/* 6 Forceadd support added */
/* 7 skbinfo support added */
-#define IPSET_TYPE_REV_MAX 8 /* bucketsize support added */
+#define IPSET_TYPE_REV_MAX 8 /* bucketsize, initval support added */
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@...filter.org>");
@@ -519,6 +519,7 @@ static struct ip_set_type hash_ipportnet_type __read_mostly = {
.create_policy = {
[IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
[IPSET_ATTR_MAXELEM] = { .type = NLA_U32 },
+ [IPSET_ATTR_INITVAL] = { .type = NLA_U32 },
[IPSET_ATTR_BUCKETSIZE] = { .type = NLA_U8 },
[IPSET_ATTR_RESIZE] = { .type = NLA_U8 },
[IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
diff --git a/net/netfilter/ipset/ip_set_hash_mac.c b/net/netfilter/ipset/ip_set_hash_mac.c
index 00dd7e20df3c..718814730acf 100644
--- a/net/netfilter/ipset/ip_set_hash_mac.c
+++ b/net/netfilter/ipset/ip_set_hash_mac.c
@@ -16,7 +16,7 @@
#include <linux/netfilter/ipset/ip_set_hash.h>
#define IPSET_TYPE_REV_MIN 0
-#define IPSET_TYPE_REV_MAX 1 /* bucketsize support */
+#define IPSET_TYPE_REV_MAX 1 /* bucketsize, initval support */
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@...filter.org>");
@@ -130,6 +130,7 @@ static struct ip_set_type hash_mac_type __read_mostly = {
.create_policy = {
[IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
[IPSET_ATTR_MAXELEM] = { .type = NLA_U32 },
+ [IPSET_ATTR_INITVAL] = { .type = NLA_U32 },
[IPSET_ATTR_BUCKETSIZE] = { .type = NLA_U8 },
[IPSET_ATTR_RESIZE] = { .type = NLA_U8 },
[IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
diff --git a/net/netfilter/ipset/ip_set_hash_net.c b/net/netfilter/ipset/ip_set_hash_net.c
index d366e816b6ed..c1a11f041ac6 100644
--- a/net/netfilter/ipset/ip_set_hash_net.c
+++ b/net/netfilter/ipset/ip_set_hash_net.c
@@ -25,7 +25,7 @@
/* 4 Comments support added */
/* 5 Forceadd support added */
/* 6 skbinfo support added */
-#define IPSET_TYPE_REV_MAX 7 /* bucketsize support added */
+#define IPSET_TYPE_REV_MAX 7 /* bucketsize, initval support added */
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@...filter.org>");
@@ -360,6 +360,7 @@ static struct ip_set_type hash_net_type __read_mostly = {
.create_policy = {
[IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
[IPSET_ATTR_MAXELEM] = { .type = NLA_U32 },
+ [IPSET_ATTR_INITVAL] = { .type = NLA_U32 },
[IPSET_ATTR_BUCKETSIZE] = { .type = NLA_U8 },
[IPSET_ATTR_RESIZE] = { .type = NLA_U8 },
[IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
diff --git a/net/netfilter/ipset/ip_set_hash_netiface.c b/net/netfilter/ipset/ip_set_hash_netiface.c
index 38b1d77584d4..3d74169b794c 100644
--- a/net/netfilter/ipset/ip_set_hash_netiface.c
+++ b/net/netfilter/ipset/ip_set_hash_netiface.c
@@ -27,7 +27,7 @@
/* 5 Forceadd support added */
/* 6 skbinfo support added */
/* 7 interface wildcard support added */
-#define IPSET_TYPE_REV_MAX 8 /* bucketsize support added */
+#define IPSET_TYPE_REV_MAX 8 /* bucketsize, initval support added */
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@...filter.org>");
@@ -476,6 +476,7 @@ static struct ip_set_type hash_netiface_type __read_mostly = {
.create_policy = {
[IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
[IPSET_ATTR_MAXELEM] = { .type = NLA_U32 },
+ [IPSET_ATTR_INITVAL] = { .type = NLA_U32 },
[IPSET_ATTR_BUCKETSIZE] = { .type = NLA_U8 },
[IPSET_ATTR_RESIZE] = { .type = NLA_U8 },
[IPSET_ATTR_PROTO] = { .type = NLA_U8 },
diff --git a/net/netfilter/ipset/ip_set_hash_netnet.c b/net/netfilter/ipset/ip_set_hash_netnet.c
index 0cc7970f36e9..6532f0505e66 100644
--- a/net/netfilter/ipset/ip_set_hash_netnet.c
+++ b/net/netfilter/ipset/ip_set_hash_netnet.c
@@ -23,7 +23,7 @@
#define IPSET_TYPE_REV_MIN 0
/* 1 Forceadd support added */
/* 2 skbinfo support added */
-#define IPSET_TYPE_REV_MAX 3 /* bucketsize support added */
+#define IPSET_TYPE_REV_MAX 3 /* bucketsize, initval support added */
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Oliver Smith <oliver@....9.b.0.7.4.0.1.0.0.2.ip6.arpa>");
@@ -465,6 +465,7 @@ static struct ip_set_type hash_netnet_type __read_mostly = {
.create_policy = {
[IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
[IPSET_ATTR_MAXELEM] = { .type = NLA_U32 },
+ [IPSET_ATTR_INITVAL] = { .type = NLA_U32 },
[IPSET_ATTR_BUCKETSIZE] = { .type = NLA_U8 },
[IPSET_ATTR_RESIZE] = { .type = NLA_U8 },
[IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
diff --git a/net/netfilter/ipset/ip_set_hash_netport.c b/net/netfilter/ipset/ip_set_hash_netport.c
index b356d7d85e34..ec1564a1cb5a 100644
--- a/net/netfilter/ipset/ip_set_hash_netport.c
+++ b/net/netfilter/ipset/ip_set_hash_netport.c
@@ -27,7 +27,7 @@
/* 5 Comments support added */
/* 6 Forceadd support added */
/* 7 skbinfo support added */
-#define IPSET_TYPE_REV_MAX 8 /* bucketsize support added */
+#define IPSET_TYPE_REV_MAX 8 /* bucketsize, initval support added */
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@...filter.org>");
@@ -466,6 +466,7 @@ static struct ip_set_type hash_netport_type __read_mostly = {
.create_policy = {
[IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
[IPSET_ATTR_MAXELEM] = { .type = NLA_U32 },
+ [IPSET_ATTR_INITVAL] = { .type = NLA_U32 },
[IPSET_ATTR_BUCKETSIZE] = { .type = NLA_U8 },
[IPSET_ATTR_RESIZE] = { .type = NLA_U8 },
[IPSET_ATTR_PROTO] = { .type = NLA_U8 },
diff --git a/net/netfilter/ipset/ip_set_hash_netportnet.c b/net/netfilter/ipset/ip_set_hash_netportnet.c
index eeb39688f26f..0e91d1e82f1c 100644
--- a/net/netfilter/ipset/ip_set_hash_netportnet.c
+++ b/net/netfilter/ipset/ip_set_hash_netportnet.c
@@ -24,7 +24,7 @@
/* 0 Comments support added */
/* 1 Forceadd support added */
/* 2 skbinfo support added */
-#define IPSET_TYPE_REV_MAX 3 /* bucketsize support added */
+#define IPSET_TYPE_REV_MAX 3 /* bucketsize, initval support added */
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Oliver Smith <oliver@....9.b.0.7.4.0.1.0.0.2.ip6.arpa>");
@@ -564,6 +564,7 @@ static struct ip_set_type hash_netportnet_type __read_mostly = {
.create_policy = {
[IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
[IPSET_ATTR_MAXELEM] = { .type = NLA_U32 },
+ [IPSET_ATTR_INITVAL] = { .type = NLA_U32 },
[IPSET_ATTR_BUCKETSIZE] = { .type = NLA_U8 },
[IPSET_ATTR_RESIZE] = { .type = NLA_U8 },
[IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
--
2.20.1
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