[PATCH NFS-UTILS 10/10] rpcctl: Add support for `rpcctl switch add-xprt`

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From: Anna Schumaker <anna.schumaker@xxxxxxxxxx>

This is used to add an xprt to the switch at runtime.

Signed-off-by: Anna Schumaker <anna.schumaker@xxxxxxxxxx>
---
 tools/rpcctl/rpcctl.man |  4 ++++
 tools/rpcctl/rpcctl.py  | 11 +++++++++++
 2 files changed, 15 insertions(+)

diff --git a/tools/rpcctl/rpcctl.man b/tools/rpcctl/rpcctl.man
index b87ba0df41c0..2ee168c8f3c5 100644
--- a/tools/rpcctl/rpcctl.man
+++ b/tools/rpcctl/rpcctl.man
@@ -12,6 +12,7 @@ rpcctl \- Displays SunRPC connection information
 .BR "rpcctl client show " "\fR[ \fB\-h \f| \fB\-\-help \fR] [ \fIXPRT \fR]"
 .P
 .BR "rpcctl switch" " \fR[ \fB\-h \fR| \fB\-\-help \fR] { \fBset \fR| \fBshow \fR}"
+.BR "rpcctl switch add-xprt" " \fR[ \fB\-h \fR| \fB\-\-help \fR] [ \fISWITCH \fR]"
 .BR "rpcctl switch set" " \fR[ \fB\-h \fR| \fB\-\-help \fR] \fISWITCH \fBdstaddr \fINEWADDR"
 .BR "rpcctl switch show" " \fR[ \fB\-h \fR| \fB\-\-help \fR] [ \fISWITCH \fR]"
 .P
@@ -29,6 +30,9 @@ Show detailed information about the RPC clients on this system.
 If \fICLIENT \fRwas provided, then only show information about a single RPC client.
 .P
 .SS rpcctl switch \fR- \fBCommands operating on groups of transports
+.IP "\fBadd-xprt \fISWITCH"
+Add an aditional transport to the \fISWITCH\fR.
+Note that the new transport will take its values from the "main" transport.
 .IP "\fBset \fISWITCH \fBdstaddr \fINEWADDR"
 Change the destination address of all transports in the \fISWITCH \fRto \fINEWADDR\fR.
 \fINEWADDR \fRcan be an IP address, DNS name, or anything else resolvable by \fBgethostbyname\fR(3).
diff --git a/tools/rpcctl/rpcctl.py b/tools/rpcctl/rpcctl.py
index 20f90d6ca796..8722c259e909 100755
--- a/tools/rpcctl/rpcctl.py
+++ b/tools/rpcctl/rpcctl.py
@@ -223,6 +223,12 @@ class XprtSwitch:
         parser.set_defaults(func=XprtSwitch.show, switch=None)
         subparser = parser.add_subparsers()
 
+        add = subparser.add_parser("add-xprt",
+                                   help="Add an xprt to the switch")
+        add.add_argument("switch", metavar="SWITCH", nargs=1,
+                         help="Name of a specific xprt switch to modify")
+        add.set_defaults(func=XprtSwitch.add_xprt)
+
         show = subparser.add_parser("show", help="Show xprt switches")
         show.add_argument("switch", metavar="SWITCH", nargs='?',
                           help="Name of a specific switch to show")
@@ -246,6 +252,11 @@ class XprtSwitch:
             return [XprtSwitch(xprt_switches / name)]
         return [XprtSwitch(f) for f in sorted(xprt_switches.iterdir())]
 
+    def add_xprt(args):
+        """Handle the `rpcctl switch add-xprt` command."""
+        for switch in XprtSwitch.get_by_name(args.switch[0]):
+            write_sysfs_file(switch.path / "xprt_switch_add_xprt", "1")
+
     def show(args):
         """Handle the `rpcctl switch show` command."""
         for switch in XprtSwitch.get_by_name(args.switch):
-- 
2.47.1





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