Merge branch 'selftests-couple-of-fixes-in-toeplitz-rps-cases'

Gal Pressman says:

====================
selftests: Couple of fixes in Toeplitz RPS cases

Fix a couple of bugs in the RPS cases of the Toeplitz selftest.
====================

Link: https://patch.msgid.link/20260112173715.384843-1-gal@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: kuba-moo

tools/testing/selftests/drivers/net/hw/toeplitz.c

@@ -485,8 +485,8 @@ static void parse_rps_bitmap(const char *arg)
 
 	bitmap = strtoul(arg, NULL, 0);
 
-	if (bitmap & ~(RPS_MAX_CPUS - 1))
-		error(1, 0, "rps bitmap 0x%lx out of bounds 0..%lu",
+	if (bitmap & ~((1UL << RPS_MAX_CPUS) - 1))
+		error(1, 0, "rps bitmap 0x%lx out of bounds, max cpu %lu",
 		      bitmap, RPS_MAX_CPUS - 1);
 
 	for (i = 0; i < RPS_MAX_CPUS; i++)

tools/testing/selftests/drivers/net/hw/toeplitz.py

@@ -94,12 +94,14 @@ def _configure_rps(cfg, rps_cpus):
     mask = 0
     for cpu in rps_cpus:
         mask |= (1 << cpu)
-    mask = hex(mask)[2:]
+
+    mask = hex(mask)
 
     # Set RPS bitmap for all rx queues
     for rps_file in glob.glob(f"/sys/class/net/{cfg.ifname}/queues/rx-*/rps_cpus"):
         with open(rps_file, "w", encoding="utf-8") as fp:
-            fp.write(mask)
+            # sysfs expects hex without '0x' prefix, toeplitz.c needs the prefix
+            fp.write(mask[2:])
 
     return mask