Author: np
Date: Sat Jul 27 07:43:43 2013
New Revision: 253701
URL: http://svnweb.freebsd.org/changeset/base/253701

Log:
  Display a string instead of a numeric code in the linkdnrc sysctl.
  
  Submitted by: gnn@

Modified:
  head/sys/dev/cxgbe/t4_main.c

Modified: head/sys/dev/cxgbe/t4_main.c
==============================================================================
--- head/sys/dev/cxgbe/t4_main.c        Sat Jul 27 05:32:26 2013        
(r253700)
+++ head/sys/dev/cxgbe/t4_main.c        Sat Jul 27 07:43:43 2013        
(r253701)
@@ -392,6 +392,7 @@ static int sysctl_devlog(SYSCTL_HANDLER_
 static int sysctl_fcoe_stats(SYSCTL_HANDLER_ARGS);
 static int sysctl_hw_sched(SYSCTL_HANDLER_ARGS);
 static int sysctl_lb_stats(SYSCTL_HANDLER_ARGS);
+static int sysctl_linkdnrc(SYSCTL_HANDLER_ARGS);
 static int sysctl_meminfo(SYSCTL_HANDLER_ARGS);
 static int sysctl_mps_tcam(SYSCTL_HANDLER_ARGS);
 static int sysctl_path_mtus(SYSCTL_HANDLER_ARGS);
@@ -4439,8 +4440,8 @@ cxgbe_sysctls(struct port_info *pi)
        oid = device_get_sysctl_tree(pi->dev);
        children = SYSCTL_CHILDREN(oid);
 
-       SYSCTL_ADD_INT(ctx, children, OID_AUTO, "linkdnrc", CTLFLAG_RD,
-           &pi->linkdnrc, 0, "reason why link is down");
+       SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "linkdnrc", CTLTYPE_STRING |
+          CTLFLAG_RD, pi, 0, sysctl_linkdnrc, "A", "reason why link is down");
        if (pi->port_type == FW_PORT_TYPE_BT_XAUI) {
                SYSCTL_ADD_PROC(ctx, children, OID_AUTO, "temperature",
                    CTLTYPE_INT | CTLFLAG_RD, pi, 0, sysctl_btphy, "I",
@@ -5486,6 +5487,37 @@ sysctl_lb_stats(SYSCTL_HANDLER_ARGS)
        return (rc);
 }
 
+static int
+sysctl_linkdnrc(SYSCTL_HANDLER_ARGS)
+{
+       int rc = 0;
+       struct port_info *pi = arg1;
+       struct sbuf *sb;
+       static const char *linkdnreasons[] = {
+               "non-specific", "remote fault", "autoneg failed", "reserved3",
+               "PHY overheated", "unknown", "rx los", "reserved7"
+       };
+
+       rc = sysctl_wire_old_buffer(req, 0);
+       if (rc != 0)
+               return(rc);
+       sb = sbuf_new_for_sysctl(NULL, NULL, 64, req);
+       if (sb == NULL)
+               return (ENOMEM);
+
+       if (pi->linkdnrc < 0)
+               sbuf_printf(sb, "n/a");
+       else if (pi->linkdnrc < nitems(linkdnreasons))
+               sbuf_printf(sb, "%s", linkdnreasons[pi->linkdnrc]);
+       else
+               sbuf_printf(sb, "%d", pi->linkdnrc);
+
+       rc = sbuf_finish(sb);
+       sbuf_delete(sb);
+
+       return (rc);
+}
+
 struct mem_desc {
        unsigned int base;
        unsigned int limit;
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