1 files changed, 120 insertions, 0 deletions
diff --git a/tools/testing/selftests/drivers/net/hds.py b/tools/testing/selftests/drivers/net/hds.py
new file mode 100755
index 000000000000..394971b25c0b
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/hds.py
@@ -0,0 +1,120 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-2.0
+
+import errno
+from lib.py import ksft_run, ksft_exit, ksft_eq, ksft_raises, KsftSkipEx
+from lib.py import EthtoolFamily, NlError
+from lib.py import NetDrvEnv
+
+def get_hds(cfg, netnl) -> None:
+    try:
+        rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}})
+    except NlError as e:
+        raise KsftSkipEx('ring-get not supported by device')
+    if 'tcp-data-split' not in rings:
+        raise KsftSkipEx('tcp-data-split not supported by device')
+
+def get_hds_thresh(cfg, netnl) -> None:
+    try:
+        rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}})
+    except NlError as e:
+        raise KsftSkipEx('ring-get not supported by device')
+    if 'hds-thresh' not in rings:
+        raise KsftSkipEx('hds-thresh not supported by device')
+
+def set_hds_enable(cfg, netnl) -> None:
+    try:
+        netnl.rings_set({'header': {'dev-index': cfg.ifindex}, 'tcp-data-split': 'enabled'})
+    except NlError as e:
+        if e.error == errno.EINVAL:
+            raise KsftSkipEx("disabling of HDS not supported by the device")
+        elif e.error == errno.EOPNOTSUPP:
+            raise KsftSkipEx("ring-set not supported by the device")
+    try:
+        rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}})
+    except NlError as e:
+        raise KsftSkipEx('ring-get not supported by device')
+    if 'tcp-data-split' not in rings:
+        raise KsftSkipEx('tcp-data-split not supported by device')
+
+    ksft_eq('enabled', rings['tcp-data-split'])
+
+def set_hds_disable(cfg, netnl) -> None:
+    try:
+        netnl.rings_set({'header': {'dev-index': cfg.ifindex}, 'tcp-data-split': 'disabled'})
+    except NlError as e:
+        if e.error == errno.EINVAL:
+            raise KsftSkipEx("disabling of HDS not supported by the device")
+        elif e.error == errno.EOPNOTSUPP:
+            raise KsftSkipEx("ring-set not supported by the device")
+    try:
+        rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}})
+    except NlError as e:
+        raise KsftSkipEx('ring-get not supported by device')
+    if 'tcp-data-split' not in rings:
+        raise KsftSkipEx('tcp-data-split not supported by device')
+
+    ksft_eq('disabled', rings['tcp-data-split'])
+
+def set_hds_thresh_zero(cfg, netnl) -> None:
+    try:
+        netnl.rings_set({'header': {'dev-index': cfg.ifindex}, 'hds-thresh': 0})
+    except NlError as e:
+        if e.error == errno.EINVAL:
+            raise KsftSkipEx("hds-thresh-set not supported by the device")
+        elif e.error == errno.EOPNOTSUPP:
+            raise KsftSkipEx("ring-set not supported by the device")
+    try:
+        rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}})
+    except NlError as e:
+        raise KsftSkipEx('ring-get not supported by device')
+    if 'hds-thresh' not in rings:
+        raise KsftSkipEx('hds-thresh not supported by device')
+
+    ksft_eq(0, rings['hds-thresh'])
+
+def set_hds_thresh_max(cfg, netnl) -> None:
+    try:
+        rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}})
+    except NlError as e:
+        raise KsftSkipEx('ring-get not supported by device')
+    if 'hds-thresh' not in rings:
+        raise KsftSkipEx('hds-thresh not supported by device')
+    try:
+        netnl.rings_set({'header': {'dev-index': cfg.ifindex}, 'hds-thresh': rings['hds-thresh-max']})
+    except NlError as e:
+        if e.error == errno.EINVAL:
+            raise KsftSkipEx("hds-thresh-set not supported by the device")
+        elif e.error == errno.EOPNOTSUPP:
+            raise KsftSkipEx("ring-set not supported by the device")
+    rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}})
+    ksft_eq(rings['hds-thresh'], rings['hds-thresh-max'])
+
+def set_hds_thresh_gt(cfg, netnl) -> None:
+    try:
+        rings = netnl.rings_get({'header': {'dev-index': cfg.ifindex}})
+    except NlError as e:
+        raise KsftSkipEx('ring-get not supported by device')
+    if 'hds-thresh' not in rings:
+        raise KsftSkipEx('hds-thresh not supported by device')
+    if 'hds-thresh-max' not in rings:
+        raise KsftSkipEx('hds-thresh-max not defined by device')
+    hds_gt = rings['hds-thresh-max'] + 1
+    with ksft_raises(NlError) as e:
+        netnl.rings_set({'header': {'dev-index': cfg.ifindex}, 'hds-thresh': hds_gt})
+    ksft_eq(e.exception.nl_msg.error, -errno.EINVAL)
+
+def main() -> None:
+    with NetDrvEnv(__file__, queue_count=3) as cfg:
+        ksft_run([get_hds,
+                  get_hds_thresh,
+                  set_hds_disable,
+                  set_hds_enable,
+                  set_hds_thresh_zero,
+                  set_hds_thresh_max,
+                  set_hds_thresh_gt],
+                 args=(cfg, EthtoolFamily()))
+    ksft_exit()
+
+if __name__ == "__main__":
+    main()