selftests: net: use the dummy bpf from net/lib

Commit 29b036b ("selftests: drv-net: test XDP, HDS auto and
the ioctl path") added an sample XDP_PASS prog in net/lib, so
that we can reuse it in various sub-directories. Delete the old
sample and use the one from the lib in existing tests.

Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250327222315.1098596-3-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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

@@ -69,7 +69,7 @@ def reconfig(cfg) -> None:
 def check_reconfig_xdp(cfg) -> None:
     def reconfig(cfg) -> None:
         ip(f"link set dev %s xdp obj %s sec xdp" %
-           (cfg.ifname, cfg.test_dir / "xdp_dummy.bpf.o"))
+           (cfg.ifname, cfg.net_lib_dir / "xdp_dummy.bpf.o"))
         ip(f"link set dev %s xdp off" % cfg.ifname)
 
     _check_reconfig(cfg, reconfig)

tools/testing/selftests/net/udpgro_bench.sh

@@ -7,7 +7,7 @@ source net_helper.sh
 
 readonly PEER_NS="ns-peer-$(mktemp -u XXXXXX)"
 
-BPF_FILE="xdp_dummy.bpf.o"
+BPF_FILE="lib/xdp_dummy.bpf.o"
 
 cleanup() {
 	local -r jobs="$(jobs -p)"

tools/testing/selftests/net/udpgro_frglist.sh

@@ -7,7 +7,7 @@ source net_helper.sh
 
 readonly PEER_NS="ns-peer-$(mktemp -u XXXXXX)"
 
-BPF_FILE="xdp_dummy.bpf.o"
+BPF_FILE="lib/xdp_dummy.bpf.o"
 
 cleanup() {
 	local -r jobs="$(jobs -p)"

tools/testing/selftests/net/udpgro_fwd.sh

@@ -3,7 +3,7 @@
 
 source net_helper.sh
 
-BPF_FILE="xdp_dummy.bpf.o"
+BPF_FILE="lib/xdp_dummy.bpf.o"
 readonly BASE="ns-$(mktemp -u XXXXXX)"
 readonly SRC=2
 readonly DST=1

tools/testing/selftests/net/veth.sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 # SPDX-License-Identifier: GPL-2.0
 
-BPF_FILE="xdp_dummy.bpf.o"
+BPF_FILE="lib/xdp_dummy.bpf.o"
 readonly STATS="$(mktemp -p /tmp ns-XXXXXX)"
 readonly BASE=`basename $STATS`
 readonly SRC=2