selftests/bpf: Xsk selftests - SKB POLL, NOPOLL

Adds following tests:

1. AF_XDP SKB mode
   Generic mode XDP is driver independent, used when the driver does
   not have support for XDP. Works on any netdevice using sockets and
   generic XDP path. XDP hook from netif_receive_skb().
   a. nopoll - soft-irq processing
   b. poll - using poll() syscall

Signed-off-by: Weqaar Janjua <weqaar.a.janjua@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Yonghong Song <yhs@fb.com>
Acked-by: Björn Töpel <bjorn.topel@intel.com>
Link: https://lore.kernel.org/bpf/20201207215333.11586-3-weqaar.a.janjua@intel.com

1 files changed, 37 insertions, 2 deletions

diff --git a/tools/testing/selftests/bpf/test_xsk.sh b/tools/testing/selftests/bpf/test_xsk.sh
index cae4c5574c4c..0b7bafb65f43 100755
--- a/tools/testing/selftests/bpf/test_xsk.sh
+++ b/tools/testing/selftests/bpf/test_xsk.sh
@@ -8,8 +8,17 @@
 #
 # Topology:
 # ---------
-#      -----------           -----------
-#      |  xskX   | --------- |  xskY   |
+#                 -----------
+#               _ | Process | _
+#              /  -----------  \
+#             /        |        \
+#            /         |         \
+#      -----------     |     -----------
+#      | Thread1 |     |     | Thread2 |
+#      -----------     |     -----------
+#           |          |          |
+#      -----------     |     -----------
+#      |  xskX   |     |     |  xskY   |
 #      -----------     |     -----------
 #           |          |          |
 #      -----------     |     ----------
@@ -39,6 +48,8 @@
 #       conflict with any existing interface
 #   * tests the veth and xsk layers of the topology
 #
+# See the source xdpxceiver.c for information on each test
+#
 # Kernel configuration:
 # ---------------------
 # See "config" file for recommended kernel config options.
@@ -138,6 +149,30 @@ retval=$?
 test_status $retval "${TEST_NAME}"
 statusList+=($retval)
 
+### TEST 2
+TEST_NAME="SKB NOPOLL"
+
+vethXDPgeneric ${VETH0} ${VETH1} ${NS1}
+
+params=("-S")
+execxdpxceiver params
+
+retval=$?
+test_status $retval "${TEST_NAME}"
+statusList+=($retval)
+
+### TEST 3
+TEST_NAME="SKB POLL"
+
+vethXDPgeneric ${VETH0} ${VETH1} ${NS1}
+
+params=("-S" "-p")
+execxdpxceiver params
+
+retval=$?
+test_status $retval "${TEST_NAME}"
+statusList+=($retval)
+
 ## END TESTS
 
 cleanup_exit ${VETH0} ${VETH1} ${NS1}