[PATCH v5 3/9] rpcctl: Add a command for printing individual xprts

[schumaker.anna@gmail.com]

From: Anna Schumaker <Anna.Schumaker@Netapp.com>

This shows more detailed information than what is presented with xprt
switches. I take the chance to add a main-export indicator to the
small_str() used when printing out xprt-switches.

Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
---
v5: Clean up how the Xprt __str__() function works
---
 tools/rpcctl/rpcctl.py |  2 ++
 tools/rpcctl/xprt.py   | 43 +++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 44 insertions(+), 1 deletion(-)

diff --git a/tools/rpcctl/rpcctl.py b/tools/rpcctl/rpcctl.py
index 90efcbed7ac8..dfad6ac08fa0 100755
--- a/tools/rpcctl/rpcctl.py
+++ b/tools/rpcctl/rpcctl.py
@@ -11,8 +11,10 @@ parser.set_defaults(func=show_small_help)
 
 
 import switch
+import xprt
 subparser = parser.add_subparsers(title="commands")
 switch.add_command(subparser)
+xprt.add_command(subparser)
 
 
 args = parser.parse_args()
diff --git a/tools/rpcctl/xprt.py b/tools/rpcctl/xprt.py
index 62859a23ea4d..f8c8110eeed6 100644
--- a/tools/rpcctl/xprt.py
+++ b/tools/rpcctl/xprt.py
@@ -5,10 +5,51 @@ class Xprt:
         self.path = path
         self.id = int(path.stem.split("-")[1])
         self.type = path.stem.split("-")[2]
+        self.info = sysfs.read_info_file(path / "xprt_info")
         self.dstaddr = sysfs.read_addr_file(path / "dstaddr")
+        self.srcaddr = sysfs.read_addr_file(path / "srcaddr")
+
+        with open(path / "xprt_state") as f:
+            self.state = ','.join(f.readline().split()[1:])
 
     def __lt__(self, rhs):
         return self.id < rhs.id
 
+    def _xprt(self):
+        main = ", main" if self.info.get("main_xprt") else ""
+        return f"xprt {self.id}: {self.type}, {self.dstaddr}, " \
+               f"port {self.info['dst_port']}, state <{self.state}>{main}"
+
+    def _src_reqs(self):
+        return f"	Source: {self.srcaddr}, port {self.info['src_port']}, " \
+               f"Requests: {self.info['num_reqs']}"
+
+    def _cong_slots(self):
+        return f"	Congestion: cur {self.info['cur_cong']}, win {self.info['cong_win']}, " \
+               f"Slots: min {self.info['min_num_slots']}, max {self.info['max_num_slots']}"
+
+    def _queues(self):
+        return f"	Queues: binding {self.info['binding_q_len']}, " \
+               f"sending {self.info['sending_q_len']}, pending {self.info['pending_q_len']}, " \
+               f"backlog {self.info['backlog_q_len']}, tasks {self.info['tasks_queuelen']}"
+
+    def __str__(self):
+        return "\n".join([self._xprt(), self._src_reqs(),
+                          self._cong_slots(), self._queues() ])
+
     def small_str(self):
-        return f"xprt {self.id}: {self.type}, {self.dstaddr}"
+        main = " [main]" if self.info.get("main_xprt") else ""
+        return f"xprt {self.id}: {self.type}, {self.dstaddr}{main}"
+
+
+def list_xprts(args):
+    xprts = [ Xprt(f) for f in (sysfs.SUNRPC / "xprt-switches").glob("**/xprt-*") ]
+    xprts.sort()
+    for xprt in xprts:
+        if args.id == None or xprt.id == args.id[0]:
+            print(xprt)
+
+def add_command(subparser):
+    parser = subparser.add_parser("xprt", help="Commands for individual xprts")
+    parser.add_argument("--id", metavar="ID", nargs=1, type=int, help="Id of a specific xprt to show")
+    parser.set_defaults(func=list_xprts)
-- 
2.33.1