From: Bobby Eshleman <redacted>

Add tests cases that check the autorelease modes (on and off).  The new
tests are the same as the old ones, but just pass a flag to ncdevmem to
select the autorelease mode.

Only for RX tests is autorelease checked, as the autorelease ncdevmem
flag is unused in the TX case and doesn't apply to TX bind operations.

Signed-off-by: Bobby Eshleman <redacted>
---
Note: I tested successfully with kperf, but I'm troubleshooting
some mlx5 issues with ncdevmem so this patch, though simple, is not
fully validated. Will respond to this thread when solve the issue.

Changes in v7:
- use autorelease netlink
- remove sockopt tests
---
 tools/testing/selftests/drivers/net/hw/devmem.py  | 22 ++++++++++++++++++++--
 tools/testing/selftests/drivers/net/hw/ncdevmem.c | 19 +++++++++++++------
 2 files changed, 33 insertions(+), 8 deletions(-)

diff --git a/tools/testing/selftests/drivers/net/hw/devmem.py b/tools/testing/selftests/drivers/net/hw/devmem.py
index 45c2d49d55b6..dddb9d77cb28 100755
--- a/tools/testing/selftests/drivers/net/hw/devmem.py
+++ b/tools/testing/selftests/drivers/net/hw/devmem.py

@@ -25,7 +25,23 @@ def check_rx(cfg) -> None:
 
     port = rand_port()
     socat = f"socat -u - TCP{cfg.addr_ipver}:{cfg.baddr}:{port},bind={cfg.remote_baddr}:{port}"
-    listen_cmd = f"{cfg.bin_local} -l -f {cfg.ifname} -s {cfg.addr} -p {port} -c {cfg.remote_addr} -v 7"
+    listen_cmd = f"{cfg.bin_local} -l -f {cfg.ifname} -s {cfg.addr} -p {port} -c {cfg.remote_addr} -v 7 -a 0"
+
+    with bkg(listen_cmd, exit_wait=True) as ncdevmem:
+        wait_port_listen(port)
+        cmd(f"yes $(echo -e \x01\x02\x03\x04\x05\x06) | \
+            head -c 1K | {socat}", host=cfg.remote, shell=True)
+
+    ksft_eq(ncdevmem.ret, 0)
+
+
+@ksft_disruptive
+def check_rx_autorelease(cfg) -> None:
+    require_devmem(cfg)
+
+    port = rand_port()
+    socat = f"socat -u - TCP{cfg.addr_ipver}:{cfg.baddr}:{port},bind={cfg.remote_baddr}:{port}"
+    listen_cmd = f"{cfg.bin_local} -l -f {cfg.ifname} -s {cfg.addr} -p {port} -c {cfg.remote_addr} -v 7 -a 1"
 
     with bkg(listen_cmd, exit_wait=True) as ncdevmem:
         wait_port_listen(port)

@@ -68,7 +84,9 @@ def main() -> None:
         cfg.bin_local = path.abspath(path.dirname(__file__) + "/ncdevmem")
         cfg.bin_remote = cfg.remote.deploy(cfg.bin_local)
 
-        ksft_run([check_rx, check_tx, check_tx_chunks],
+        ksft_run([check_rx, check_rx_autorelease,
+                  check_tx, check_tx_autorelease,
+                  check_tx_chunks, check_tx_chunks_autorelease],
                  args=(cfg, ))
     ksft_exit()