When --details selected, if PortCounters has transmit discards, then
query PortXmitDiscardDetails. On reset, if --details is selected, then
PortXmitDiscardDetails will also be reset.

Unfortunately, PortSamplesControl:OptionMask can't be trusted to determine
which PortXmitDiscardDetails counters are supported so an option was added
for this.

Signed-off-by: Hal Rosenstock <hal.rosenst...@gmail.com>
---
Changes since v1:
Better description

diff --git a/infiniband-diags/man/ibqueryerrors.8 
b/infiniband-diags/man/ibqueryerrors.8
index 1352246..d5a499e 100644
--- a/infiniband-diags/man/ibqueryerrors.8
+++ b/infiniband-diags/man/ibqueryerrors.8
@@ -1,4 +1,4 @@
-.TH IBQUERYERRORS 8 "Jan 24, 2008" "OpenIB" "OpenIB Diagnostics"
+.TH IBQUERYERRORS 8 "Oct 30, 2009" "OpenIB" "OpenIB Diagnostics"
 
 .SH NAME
 ibqueryerrors.pl \- query and report non-zero IB port counters
@@ -58,6 +58,8 @@ printed or not.  This is because data counters are only 
\fBprinted\fR on ports
 which have errors.  This means if a port has 0 errors and the \-K option is
 specified the data counters will be cleared without any printed output.
 .TP
+\fB\-\-details\fR include transmit discard details
+.TP
 \fB\-R\fR  (This option is obsolete and does nothing)
 
 .SH COMMON OPTIONS
diff --git a/infiniband-diags/src/ibqueryerrors.c 
b/infiniband-diags/src/ibqueryerrors.c
index f83f29e..61a34e4 100644
--- a/infiniband-diags/src/ibqueryerrors.c
+++ b/infiniband-diags/src/ibqueryerrors.c
@@ -2,6 +2,7 @@
  * Copyright (c) 2004-2009 Voltaire Inc.  All rights reserved.
  * Copyright (c) 2007 Xsigo Systems Inc.  All rights reserved.
  * Copyright (c) 2008 Lawrence Livermore National Lab.  All rights reserved.
+ * Copyright (c) 2009 HNR Consulting.  All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -65,7 +66,7 @@ int sup_total = 0;
 enum MAD_FIELDS *suppressed_fields = NULL;
 char *dr_path = NULL;
 uint8_t node_type_to_print = 0;
-unsigned clear_errors = 0, clear_counts = 0;
+unsigned clear_errors = 0, clear_counts = 0, details = 0;
 
 #define PRINT_SWITCH 0x1
 #define PRINT_CA     0x2
@@ -273,10 +274,35 @@ static int query_cap_mask(ib_portid_t *portid, char 
*node_name, int portnum,
        return 0;
 }
 
+static void print_xmitdisc_details(ibnd_node_t * node, char * node_name,
+                                  uint8_t * pc, int portnum)
+{
+       char buf[1024];
+       char *str = buf;
+       uint32_t val = 0;
+       int n = 0;
+       int i = 0;
+
+       buf[0] = 0;
+       for (n = 0, i = IB_PC_XMT_INACT_DISC_F; i <= IB_PC_XMT_SW_HOL_DISC_F; 
i++) {
+               mad_decode_field(pc, i, (void *)&val);
+               if (val)
+                       n += snprintf(str + n, 1024 - n, " [%s == %d]",
+                                     mad_field_name(i), val);
+       }
+       if (n > 0) {
+               printf("   GUID 0x%" PRIx64 " port %d:%s\n", node->guid,
+                      portnum, str);
+               if (port_config)
+                       print_port_config(node_name, node, portnum);
+       }
+}
+
 static void print_port(ib_portid_t * portid, uint16_t cap_mask, char 
*node_name,
                       ibnd_node_t * node, int portnum, int *header_printed)
 {
        uint8_t pc[1024];
+       uint32_t xmtdisc;
 
        memset(pc, 0, 1024);
 
@@ -292,6 +318,19 @@ static void print_port(ib_portid_t * portid, uint16_t 
cap_mask, char *node_name,
                mad_encode_field(pc, IB_PC_XMT_WAIT_F, &foo);
        }
        print_results(node_name, node, pc, portnum, header_printed);
+
+       /* If there are PortXmitDiscards, get details (if supported) */
+       mad_decode_field(pc, IB_PC_XMT_DISCARDS_F, &xmtdisc);
+       if (details && xmtdisc) {
+               if (!pma_query_via(pc, portid, portnum, ibd_timeout,
+                                  IB_GSI_PORT_XMIT_DISCARD_DETAILS,
+                                  ibmad_port)) {
+                       IBWARN("IB_GSI_PORT_XMIT_DISCARD_DETAILS query failed 
on %s, %s port %d",
+                              node_name, portid2str(portid), portnum);
+                       return;
+               }
+               print_xmitdisc_details(node, node_name, pc, portnum);
+       }
 }
 
 static void clear_port(ib_portid_t * portid, uint16_t cap_mask,
@@ -318,6 +357,13 @@ static void clear_port(ib_portid_t * portid, uint16_t 
cap_mask,
                                   IB_GSI_PORT_COUNTERS, ibmad_port))
                IBERROR("Failed to reset errors %s port %d",
                        node_name, port);
+
+       if (details && clear_errors) {
+               mask = 0xF;
+               performance_reset_via(pc, portid, port, mask, ibd_timeout,
+                                     IB_GSI_PORT_XMIT_DISCARD_DETAILS,
+                                     ibmad_port);
+       }
 }
 
 void print_node(ibnd_node_t * node, void *user_data)
@@ -428,6 +474,9 @@ static int process_opt(void *context, int ch, char *optarg)
        case 5:
                node_type_to_print |= PRINT_ROUTER;
                break;
+       case 6:
+               details = 1;
+               break;
        case 'G':
        case 'S':
                node_guid_str = optarg;
@@ -484,6 +533,7 @@ int main(int argc, char **argv)
                {"switch", 3, 0, NULL, "print data for switches only"},
                {"ca", 4, 0, NULL, "print data for CA's only"},
                {"router", 5, 0, NULL, "print data for routers only"},
+               {"details", 6, 0, NULL, "include transmit discard details"},
                {"clear-errors", 'k', 0, NULL,
                 "Clear error counters after read"},
                {"clear-counts", 'K', 0, NULL,
--
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