ofp-print: Print Nicira error extension messages.

Currently, Nicira error messages are non-overlapping with the OpenFlow
error definitions.  This commit takes advantage of that by not taking
into account the vendor id.  Printing error messages is likely to be
overhauled before long, and a more general approach can be taken then.

diff --git a/lib/ofp-print.c b/lib/ofp-print.c
index 4141b9f..faffe55 100644 (file)
--- a/lib/ofp-print.c
+++ b/lib/ofp-print.c
@@ -919,6 +919,13 @@ static const struct error_type error_types[] = {
     ERROR_CODE(OFPET_BAD_REQUEST, OFPBRC_BAD_LEN),
     ERROR_CODE(OFPET_BAD_REQUEST, OFPBRC_BUFFER_EMPTY),
     ERROR_CODE(OFPET_BAD_REQUEST, OFPBRC_BUFFER_UNKNOWN),
+    /* Nicira error extensions. */
+    ERROR_CODE(OFPET_BAD_REQUEST, NXBRC_NXM_INVALID),
+    ERROR_CODE(OFPET_BAD_REQUEST, NXBRC_NXM_BAD_TYPE),
+    ERROR_CODE(OFPET_BAD_REQUEST, NXBRC_NXM_BAD_VALUE),
+    ERROR_CODE(OFPET_BAD_REQUEST, NXBRC_NXM_BAD_MASK),
+    ERROR_CODE(OFPET_BAD_REQUEST, NXBRC_NXM_BAD_PREREQ),
+    ERROR_CODE(OFPET_BAD_REQUEST, NXBRC_NXM_DUP_TYPE),
 
     ERROR_TYPE(OFPET_BAD_ACTION),
     ERROR_CODE(OFPET_BAD_ACTION, OFPBAC_BAD_TYPE),
@@ -936,6 +943,9 @@ static const struct error_type error_types[] = {
     ERROR_CODE(OFPET_FLOW_MOD_FAILED, OFPFMFC_EPERM),
     ERROR_CODE(OFPET_FLOW_MOD_FAILED, OFPFMFC_BAD_EMERG_TIMEOUT),
     ERROR_CODE(OFPET_FLOW_MOD_FAILED, OFPFMFC_BAD_COMMAND),
+    /* Nicira error extenstions. */
+    ERROR_CODE(OFPET_FLOW_MOD_FAILED, NXFMFC_HARDWARE),
+    ERROR_CODE(OFPET_FLOW_MOD_FAILED, NXFMFC_BAD_TABLE_ID),
 
     ERROR_TYPE(OFPET_PORT_MOD_FAILED),
     ERROR_CODE(OFPET_PORT_MOD_FAILED, OFPPMFC_BAD_PORT),
@@ -982,6 +992,24 @@ ofp_print_error(struct ds *string, int error)
                   code, lookup_error_code(type, code));
 }
 
+static void
+ofp_print_nx_error_msg(struct ds *string, const struct ofp_error_msg *oem)
+{
+    size_t len = ntohs(oem->header.length);
+    const struct nx_vendor_error *nve = (struct nx_vendor_error *)oem->data;
+    int vendor = ntohl(nve->vendor);
+    int type = ntohs(nve->type);
+    int code = ntohs(nve->code);
+
+    ds_put_format(string, " vendor:%x type:%d(%s) code:%d(%s) payload:\n",
+                  vendor,
+                  type, lookup_error_type(type),
+                  code, lookup_error_code(type, code));
+
+    ds_put_hex_dump(string, nve + 1, len - sizeof *oem - sizeof *nve,
+                    0, true);
+}
+
 static void
 ofp_print_error_msg(struct ds *string, const struct ofp_error_msg *oem)
 {
@@ -990,6 +1018,19 @@ ofp_print_error_msg(struct ds *string, const struct ofp_error_msg *oem)
     int code = ntohs(oem->code);
     char *s;
 
+
+    if (type == NXET_VENDOR && code == NXVC_VENDOR_ERROR) {
+        if (len < sizeof *oem + sizeof(struct nx_vendor_error)) {
+            ds_put_format(&string,
+                          "(***truncated extended error message is %zu bytes "
+                          "when it should be at least %zu***)\n"
+                          len, sizeof(struct nx_vendor_error));
+            return;
+        }
+
+        return ofp_print_nx_error_msg(string, oem);
+    }
+
     ds_put_format(string, " type:%d(%s) code:%d(%s) payload:\n",
                   type, lookup_error_type(type),
                   code, lookup_error_code(type, code));