Create a proc/sys/sunrpc/transport file that contains information
about the currently registered transports.
Signed-off-by: Tom Tucker <[EMAIL PROTECTED]>
---
include/linux/sunrpc/debug.h | 1 +
net/sunrpc/svcsock.c | 28 ++++++++++++++++++++++++++++
net/sunrpc/sysctl.c | 40 +++++++++++++++++++++++++++++++++++++++-
3 files changed, 68 insertions(+), 1 deletions(-)
diff --git a/include/linux/sunrpc/debug.h b/include/linux/sunrpc/debug.h
index 10709cb..89458df 100644
--- a/include/linux/sunrpc/debug.h
+++ b/include/linux/sunrpc/debug.h
@@ -88,6 +88,7 @@ enum {
CTL_SLOTTABLE_TCP,
CTL_MIN_RESVPORT,
CTL_MAX_RESVPORT,
+ CTL_TRANSPORTS,
};
#endif /* _LINUX_SUNRPC_DEBUG_H_ */
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index d6443e8..276737e 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -139,6 +139,34 @@ int svc_unregister_transport(struct svc_
}
EXPORT_SYMBOL_GPL(svc_unregister_transport);
+/*
+ * Format the transport list for printing
+ */
+int svc_print_transports(char *buf, int maxlen)
+{
+ struct list_head *le;
+ char tmpstr[80];
+ int len = 0;
+ buf[0] = '\0';
+
+ spin_lock(&svc_transport_lock);
+ list_for_each(le, &svc_transport_list) {
+ int slen;
+ struct svc_xprt *xprt =
+ list_entry(le, struct svc_xprt, xpt_list);
+
+ sprintf(tmpstr, "%s %d\n", xprt->xpt_name,
xprt->xpt_max_payload);
+ slen = strlen(tmpstr);
+ if (len + slen > maxlen)
+ break;
+ len += slen;
+ strcat(buf, tmpstr);
+ }
+ spin_unlock(&svc_transport_lock);
+
+ return len;
+}
+
/* apparently the "standard" is that clients close
* idle connections after 5 minutes, servers after
* 6 minutes
diff --git a/net/sunrpc/sysctl.c b/net/sunrpc/sysctl.c
index 738db32..683cf90 100644
--- a/net/sunrpc/sysctl.c
+++ b/net/sunrpc/sysctl.c
@@ -27,6 +27,9 @@ unsigned int nfs_debug;
unsigned int nfsd_debug;
unsigned int nlm_debug;
+/* Transport string */
+char xprt_buf[128];
+
#ifdef RPC_DEBUG
static struct ctl_table_header *sunrpc_table_header;
@@ -48,6 +51,34 @@ rpc_unregister_sysctl(void)
}
}
+int svc_print_transports(char *buf, int maxlen);
+static int proc_do_xprt(ctl_table *table, int write, struct file *file,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ char tmpbuf[128];
+ int len;
+ if ((*ppos && !write) || !*lenp) {
+ *lenp = 0;
+ return 0;
+ }
+
+ if (write)
+ return -EINVAL;
+ else {
+
+ len = svc_print_transports(tmpbuf, 128);
+ if (!access_ok(VERIFY_WRITE, buffer, len))
+ return -EFAULT;
+
+ if (__copy_to_user(buffer, tmpbuf, len))
+ return -EFAULT;
+ }
+
+ *lenp -= len;
+ *ppos += len;
+ return 0;
+}
+
static int
proc_dodebug(ctl_table *table, int write, struct file *file,
void __user *buffer, size_t *lenp, loff_t *ppos)
@@ -111,7 +142,6 @@ done:
return 0;
}
-
static ctl_table debug_table[] = {
{
.ctl_name = CTL_RPCDEBUG,
@@ -145,6 +175,14 @@ static ctl_table debug_table[] = {
.mode = 0644,
.proc_handler = &proc_dodebug
},
+ {
+ .ctl_name = CTL_TRANSPORTS,
+ .procname = "transports",
+ .data = xprt_buf,
+ .maxlen = sizeof(xprt_buf),
+ .mode = 0444,
+ .proc_handler = &proc_do_xprt,
+ },
{ .ctl_name = 0 }
};
_______________________________________________
general mailing list
general@lists.openfabrics.org
http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general
To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
