[RFC PATCH 3/6] nfs-sysfs.py: 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.

Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
---
 tools/nfs-sysfs/nfs-sysfs.py |  2 ++
 tools/nfs-sysfs/xprt.py      | 28 ++++++++++++++++++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/tools/nfs-sysfs/nfs-sysfs.py b/tools/nfs-sysfs/nfs-sysfs.py
index 90efcbed7ac8..dfad6ac08fa0 100755
--- a/tools/nfs-sysfs/nfs-sysfs.py
+++ b/tools/nfs-sysfs/nfs-sysfs.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/nfs-sysfs/xprt.py b/tools/nfs-sysfs/xprt.py
index d37537771c1d..b95fb2d48829 100644
--- a/tools/nfs-sysfs/xprt.py
+++ b/tools/nfs-sysfs/xprt.py
@@ -1,3 +1,5 @@
+import sysfs
+
 class Xprt:
     def __init__(self, path):
         self.path = path
@@ -5,8 +7,34 @@ class Xprt:
         self.type = str(path).rsplit("-", 2)[2]
         self.dstaddr = open(path / "dstaddr", 'r').readline().strip()
 
+        with open(path / "xprt_state") as f:
+            self.state = ','.join(f.readline().split()[1:])
+        self.__dict__.update(sysfs.read_info_file(path / "xprt_info"))
+
     def __lt__(self, rhs):
         return self.id < rhs.id
 
+    def __str__(self):
+        line = "xprt %s: %s, %s, state <%s>, num_reqs %s" % \
+                (self.id, self.type, self.dstaddr, self.state, self.num_reqs)
+        line += "\n	cur_cong %s, cong_win %s, min_num_slots %s, max_num_slots %s" % \
+                (self.cur_cong, self.cong_win, self.min_num_slots, self.max_num_slots)
+        line += "\n	binding_q_len %s, sending_q_len %s, pending_q_len %s, backlog_q_len %s" % \
+                (self.binding_q_len, self.sending_q_len, self.pending_q_len, self.backlog_q_len)
+        return line
+
     def small_str(self):
         return "xprt %s: %s, %s" % (self.id, self.type, self.dstaddr)
+
+
+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)
-- 
2.32.0