netfilter: uapi: Use UAPI definition of INT_MAX and INT_MIN

Using <limits.h> to gain access to INT_MAX and INT_MIN introduces a
dependency on a libc, which UAPI headers should not do.

Use the equivalent UAPI constants.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Link: https://patch.msgid.link/20260113-uapi-limits-v2-3-93c20f4b2c1a@linutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/include/uapi/linux/netfilter_bridge.h b/include/uapi/linux/netfilter_bridge.h
index 1610fdbab98dfc89212ee653a573da8c39bdefe8..f6e8d1e05c97124db81454ad264a089dec662c65 100644 (file)
--- a/include/uapi/linux/netfilter_bridge.h
+++ b/include/uapi/linux/netfilter_bridge.h
@@ -10,10 +10,7 @@
 #include <linux/if_ether.h>
 #include <linux/if_vlan.h>
 #include <linux/if_pppox.h>
-
-#ifndef __KERNEL__
-#include <limits.h> /* for INT_MIN, INT_MAX */
-#endif
+#include <linux/typelimits.h>
 
 /* Bridge Hooks */
 /* After promisc drops, checksum checks. */
@@ -31,14 +28,14 @@
 #define NF_BR_NUMHOOKS         6
 
 enum nf_br_hook_priorities {
-       NF_BR_PRI_FIRST = INT_MIN,
+       NF_BR_PRI_FIRST = __KERNEL_INT_MIN,
        NF_BR_PRI_NAT_DST_BRIDGED = -300,
        NF_BR_PRI_FILTER_BRIDGED = -200,
        NF_BR_PRI_BRNF = 0,
        NF_BR_PRI_NAT_DST_OTHER = 100,
        NF_BR_PRI_FILTER_OTHER = 200,
        NF_BR_PRI_NAT_SRC = 300,
-       NF_BR_PRI_LAST = INT_MAX,
+       NF_BR_PRI_LAST = __KERNEL_INT_MAX,
 };
 
 #endif /* _UAPI__LINUX_BRIDGE_NETFILTER_H */

diff --git a/include/uapi/linux/netfilter_ipv4.h b/include/uapi/linux/netfilter_ipv4.h
index 155e77d6a42d0d60f75a4e9bc1fa7e7c2f074fdf..439d3c59862b23ee52fb0b38075f50b60d8c620a 100644 (file)
--- a/include/uapi/linux/netfilter_ipv4.h
+++ b/include/uapi/linux/netfilter_ipv4.h
@@ -7,12 +7,11 @@
 
 
 #include <linux/netfilter.h>
+#include <linux/typelimits.h>
 
 /* only for userspace compatibility */
 #ifndef __KERNEL__
 
-#include <limits.h> /* for INT_MIN, INT_MAX */
-
 /* IP Hooks */
 /* After promisc drops, checksum checks. */
 #define NF_IP_PRE_ROUTING      0
@@ -28,7 +27,7 @@
 #endif /* ! __KERNEL__ */
 
 enum nf_ip_hook_priorities {
-       NF_IP_PRI_FIRST = INT_MIN,
+       NF_IP_PRI_FIRST = __KERNEL_INT_MIN,
        NF_IP_PRI_RAW_BEFORE_DEFRAG = -450,
        NF_IP_PRI_CONNTRACK_DEFRAG = -400,
        NF_IP_PRI_RAW = -300,
@@ -41,8 +40,8 @@ enum nf_ip_hook_priorities {
        NF_IP_PRI_NAT_SRC = 100,
        NF_IP_PRI_SELINUX_LAST = 225,
        NF_IP_PRI_CONNTRACK_HELPER = 300,
-       NF_IP_PRI_CONNTRACK_CONFIRM = INT_MAX,
-       NF_IP_PRI_LAST = INT_MAX,
+       NF_IP_PRI_CONNTRACK_CONFIRM = __KERNEL_INT_MAX,
+       NF_IP_PRI_LAST = __KERNEL_INT_MAX,
 };
 
 /* Arguments for setsockopt SOL_IP: */

diff --git a/include/uapi/linux/netfilter_ipv6.h b/include/uapi/linux/netfilter_ipv6.h
index 80aa9b0799af7a845f797bb85404395a4cdcc67a..0e40d00b37fa424d6617a0259370c670b876abf1 100644 (file)
--- a/include/uapi/linux/netfilter_ipv6.h
+++ b/include/uapi/linux/netfilter_ipv6.h
@@ -10,12 +10,11 @@
 
 
 #include <linux/netfilter.h>
+#include <linux/typelimits.h>
 
 /* only for userspace compatibility */
 #ifndef __KERNEL__
 
-#include <limits.h> /* for INT_MIN, INT_MAX */
-
 /* IP6 Hooks */
 /* After promisc drops, checksum checks. */
 #define NF_IP6_PRE_ROUTING     0
@@ -32,7 +31,7 @@
 
 
 enum nf_ip6_hook_priorities {
-       NF_IP6_PRI_FIRST = INT_MIN,
+       NF_IP6_PRI_FIRST = __KERNEL_INT_MIN,
        NF_IP6_PRI_RAW_BEFORE_DEFRAG = -450,
        NF_IP6_PRI_CONNTRACK_DEFRAG = -400,
        NF_IP6_PRI_RAW = -300,
@@ -45,7 +44,7 @@ enum nf_ip6_hook_priorities {
        NF_IP6_PRI_NAT_SRC = 100,
        NF_IP6_PRI_SELINUX_LAST = 225,
        NF_IP6_PRI_CONNTRACK_HELPER = 300,
-       NF_IP6_PRI_LAST = INT_MAX,
+       NF_IP6_PRI_LAST = __KERNEL_INT_MAX,
 };