src: add tcp option reset support

This allows to replace a tcp option with nops, similar
to the TCPOPTSTRIP feature of iptables.

Signed-off-by: Florian Westphal <fw@strlen.de>

1 files changed, 35 insertions, 0 deletions

diff --git a/tests/py/any/tcpopt.t.json b/tests/py/any/tcpopt.t.json
index 5cc6f8f4..4466f14f 100644
--- a/tests/py/any/tcpopt.t.json
+++ b/tests/py/any/tcpopt.t.json
@@ -585,3 +585,38 @@
         }
    }
 ]
+
+# reset tcp option mptcp
+[
+    {
+        "reset": {
+            "tcp option": {
+                "name": "mptcp"
+            }
+        }
+    }
+]
+
+# reset tcp option 2
+[
+    {
+        "reset": {
+            "tcp option": {
+                "name": "maxseg"
+            }
+        }
+    }
+]
+
+# reset tcp option 123
+[
+    {
+        "reset": {
+            "tcp option": {
+                "base": 123,
+                "len": 0,
+                "offset": 0
+            }
+        }
+    }
+]