From: Alan Maguire <alan.maguire@oracle.com>
Date: Mon, 27 Apr 2026 11:22:05 +0000 (+0100)
Subject: bpf: Export cnum_umin/umax() helpers for netronome driver
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=79b8ebcbe483fee401e1b91dd32470348d9aa5b8;p=thirdparty%2Flinux.git

bpf: Export cnum_umin/umax() helpers for netronome driver

ERROR: modpost: "cnum64_umin" [drivers/net/ethernet/netronome/nfp/nfp.ko] undefined!
ERROR: modpost: "cnum64_umax" [drivers/net/ethernet/netronome/nfp/nfp.ko] undefined!

Export symbols for these references.

Reported-by: Kaitao Cheng <pilgrimtao@gmail.com>
Fixes: bbc631085503 ("bpf: replace min/max fields with struct cnum{32,64}")
Signed-off-by: Alan Maguire <alan.maguire@oracle.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260427112205.1346733-1-alan.maguire@oracle.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
---

diff --git a/kernel/bpf/cnum_defs.h b/kernel/bpf/cnum_defs.h
index 1f232138b6e9c..a90e317e35780 100644
--- a/kernel/bpf/cnum_defs.h
+++ b/kernel/bpf/cnum_defs.h
@@ -6,6 +6,7 @@
 #endif
 
 #include <linux/cnum.h>
+#include <linux/kernel.h>
 #include <linux/limits.h>
 #include <linux/minmax.h>
 #include <linux/compiler_types.h>
@@ -48,11 +49,13 @@ ut FN(umin)(struct cnum_t cnum)
 {
 	return FN(urange_overflow)(cnum) ? 0 : cnum.base;
 }
+EXPORT_SYMBOL_GPL(FN(umin));
 
 ut FN(umax)(struct cnum_t cnum)
 {
 	return FN(urange_overflow)(cnum) ? UT_MAX : cnum.base + cnum.size;
 }
+EXPORT_SYMBOL_GPL(FN(umax));
 
 /* True if this cnum represents two signed ranges. */
 static inline bool FN(srange_overflow)(struct cnum_t cnum)