userspace/snmpd: update show-pstats script

--update show-pstats script after transpose of wrsPstats into wrsPstatsTable
--update wrs-user-manual with information about possible usage of snmptable

Instead of using script show-pstats, snmptable can be used. For example:
snmptable -c public -v 2c switch_IP -m all -M $WRS_OUTPUT_DIR/build/buildroot-2011.11/output/build/netsnmp-5.6.1.1/mibs/:userspace/snmpd/ WR-SWITCH-MIB::wrsPstatsTable

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

doc/wrs-user-manual.in

@@ -1360,6 +1360,63 @@ If everything goes well, you'll get a window like the following one:
 
 @center @image{show-pstats, 10cm,, show-pstats}
 
+Command @t{snmptable} can also be used to get simillar results:
+
+@smallexample
+snmptable -Cw 80 -c public -v 2c 192.168.1.10 -m all \
+-M $WRS_OUTPUT_DIR/build/buildroot-2011.11/output/build/netsnmp-5.6.1.1/mibs/\
+:userspace/snmpd/ WR-SWITCH-MIB::wrsPstatsTable
+@end smallexample
+Output is in text form and looks like:
+@smallexample
+SNMP table: WR-SWITCH-MIB::wrsPstatsTable
+
+ wrsPstatsPortName wrsPstatsTXUnderrun wrsPstatsRXOverrun wrsPstatsRXInvalidCode
+               wr0                   0                  0                      0
+               wr1                   0                  0                      0
+               wr2                   0                  0                      0
+               wr3                   0                  0                      0
+               wr4                   0                  0                      0
+               wr5                   0                  0                      0
+               wr6                   0                  0                      0
+               wr7                   0                  0                      0
+               wr8                   0                  0                      0
+               wr9                   0                  0                      0
+              wr10                   0                  0                      0
+              wr11                   0                  0                      0
+              wr12                   0                  0                      0
+              wr13                   0                  0                      0
+              wr14                   0                  0                      0
+              wr15                   0                  0                      0
+              wr16                   0                  0                      0
+              wr17                   0                  0                      0
+
+SNMP table WR-SWITCH-MIB::wrsPstatsTable, part 2
+
+ wrsPstatsRXSyncLost wrsPstatsRXPauseFrames wrsPstatsRXPfilterDropped
+                   0                      0                         0
+                   0                      0                         0
+                   0                      0                         0
+                   0                      0                         0
+                   0                      0                         0
+                   0                      0                         0
+                   0                      0                         0
+                   0                      0                         0
+                   0                      0                         0
+                   0                      0                         0
+                   0                      0                         0
+                   0                      0                         0
+                   0                      0                         0
+                   0                      0                         0
+                   0                      0                         0
+                   0                      0                         0
+                   0                      0                         0
+                   0                      0                         0
+
+(...)
+@end smallexample
+Unfortunately output due to the number of counters is very wide. Number of 
+characters per line can be limited by switch @t{Cw}, in example was set to 80.
 
 @c ##########################################################################
 @node Bugs and Troubleshooting

userspace/snmpd/show-pstats

@@ -2,7 +2,7 @@
 
 # Allow user override
 if [catch "set cmd \"\$env(SHOWPS_CMD)\""] {
-    set cmd "snmpwalk -c public -v 2c -On -Oq HOST .1.3.6.1.4.1.96.100.2.1"
+    set cmd "snmpwalk -c public -v 2c -On -Oq HOST .1.3.6.1.4.1.96.100.6.4.1"
 }
 
 if ![llength $argv] {
@@ -21,13 +21,53 @@ proc updatew {wname} {
 	    grid [label $wname.wr$i -text "WR$i" -fg blue] -row 0 -column $c
 	}
     }
-
+    set labels {wrsPstatsPortName
+		wrsPstatsTXUnderrun
+		wrsPstatsRXOverrun
+		wrsPstatsRXInvalidCode
+		wrsPstatsRXSyncLost
+		wrsPstatsRXPauseFrames
+		wrsPstatsRXPfilterDropped
+		wrsPstatsRXPCSErrors
+		wrsPstatsRXGiantFrames
+		wrsPstatsRXRuntFrames
+		wrsPstatsRXCRCErrors
+		wrsPstatsRXPclass0
+		wrsPstatsRXPclass1
+		wrsPstatsRXPclass2
+		wrsPstatsRXPclass3
+		wrsPstatsRXPclass4
+		wrsPstatsRXPclass5
+		wrsPstatsRXPclass6
+		wrsPstatsRXPclass7
+		wrsPstatsTXFrames
+		wrsPstatsRXFrames
+		wrsPstatsRXDropRTUFull
+		wrsPstatsRXPrio0
+		wrsPstatsRXPrio1
+		wrsPstatsRXPrio2
+		wrsPstatsRXPrio3
+		wrsPstatsRXPrio4
+		wrsPstatsRXPrio5
+		wrsPstatsRXPrio6
+		wrsPstatsRXPrio7
+		wrsPstatsRTUValid
+		wrsPstatsRTUResponses
+		wrsPstatsRTUDropped
+		wrsPstatsFastMatchPriority
+		wrsPstatsFastMatchFastForward
+		wrsPstatsFastMatchNonForward
+		wrsPstatsFastMatchRespValid
+		wrsPstatsFullMatchRespValid
+		wrsPstatsForwarded
+		wrsPstatsTRURespValid
+    }
     # open a file according to the command given
     set F [open "| $w($wname:cmd)" r]
     while {[gets $F str] > 0} {
 	foreach {oid value} $str {
 	    # remove the leading part
-	    regsub ".1.3.6.1.4.1.96.100.2.1." $oid "" oid
+	    regsub ".1.3.6.1.4.1.96.100.6.4.1." $oid "" oid
 	    # extract column and row
 	    foreach {col row} [split $oid .] {
 		if ![string length $row] break
@@ -38,10 +78,24 @@ proc updatew {wname} {
 		set width "-width 8"
 		if {$col == 1} {set width ""}
 		eval $name config -text \"$value\" $width
-		grid $name -row $row -column $col
+		set row1 [expr $row +1]
+		grid $name -row $col -column $row1
 	    }
 	}
-    }		    
+    }
+    set n [llength $labels]
+    set row 0
+    while {$row < $n} {
+	set name $wname.1_${row}
+	if $new {
+	    label $name
+	}
+	set counter_name [lindex $labels $row]
+	eval $name config -text \"$counter_name\"
+	set row1 [expr $row +2]
+	grid $name -row $row1 -column 1
+	incr row
+    }
     if [catch "close $F" message] {
 	puts stderr "Error in snmpwalk for host $w($wname:host)"
 	puts stderr $message