bpf: add selftest for tcpbpf
Added a selftest for tcpbpf (sock_ops) that checks that the appropriate
callbacks occured and that it can access tcp_sock fields and that their
values are correct.
Run with command: ./test_tcpbpf_user
Adding the flag "-d" will show why it did not pass.
Signed-off-by: Lawrence Brakmo <brakmo@fb.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
diff --git a/tools/testing/selftests/bpf/tcp_server.py b/tools/testing/selftests/bpf/tcp_server.py
new file mode 100755
index 0000000..bc454d7
--- /dev/null
+++ b/tools/testing/selftests/bpf/tcp_server.py
@@ -0,0 +1,83 @@
+#!/usr/bin/env python2
+#
+# SPDX-License-Identifier: GPL-2.0
+#
+
+import sys, os, os.path, getopt
+import socket, time
+import subprocess
+import select
+
+def read(sock, n):
+ buf = ''
+ while len(buf) < n:
+ rem = n - len(buf)
+ try: s = sock.recv(rem)
+ except (socket.error), e: return ''
+ buf += s
+ return buf
+
+def send(sock, s):
+ total = len(s)
+ count = 0
+ while count < total:
+ try: n = sock.send(s)
+ except (socket.error), e: n = 0
+ if n == 0:
+ return count;
+ count += n
+ return count
+
+
+SERVER_PORT = 12877
+MAX_PORTS = 2
+
+serverPort = SERVER_PORT
+serverSocket = None
+
+HostName = socket.gethostname()
+
+# create passive socket
+serverSocket = socket.socket(socket.AF_INET6, socket.SOCK_STREAM)
+host = socket.gethostname()
+
+try: serverSocket.bind((host, 0))
+except socket.error as msg:
+ print 'bind fails: ', msg
+
+sn = serverSocket.getsockname()
+serverPort = sn[1]
+
+cmdStr = ("./tcp_client.py %d &") % (serverPort)
+os.system(cmdStr)
+
+buf = ''
+n = 0
+while n < 500:
+ buf += '.'
+ n += 1
+
+serverSocket.listen(MAX_PORTS)
+readList = [serverSocket]
+
+while True:
+ readyRead, readyWrite, inError = \
+ select.select(readList, [], [], 2)
+
+ if len(readyRead) > 0:
+ waitCount = 0
+ for sock in readyRead:
+ if sock == serverSocket:
+ (clientSocket, address) = serverSocket.accept()
+ address = str(address[0])
+ readList.append(clientSocket)
+ else:
+ sock.settimeout(1);
+ s = read(sock, 1000)
+ n = send(sock, buf)
+ sock.close()
+ serverSocket.close()
+ sys.exit(0)
+ else:
+ print 'Select timeout!'
+ sys.exit(1)