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-rw-r--r--src/vnet/srp/format.c147
1 files changed, 147 insertions, 0 deletions
diff --git a/src/vnet/srp/format.c b/src/vnet/srp/format.c
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+/*
+ * Copyright (c) 2015 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/*
+ * srp_format.c: srp formatting/parsing.
+ *
+ * Copyright (c) 2008 Eliot Dresselhaus
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <vlib/vlib.h>
+#include <vnet/srp/srp.h>
+#include <vnet/ethernet/ethernet.h>
+
+static u8 * format_srp_mode (u8 * s, va_list * args)
+{
+ u32 mode = va_arg (*args, u32);
+ char * t = 0;
+ switch (mode)
+ {
+#define _(f) case SRP_MODE_##f: t = #f; break;
+ foreach_srp_mode
+#undef _
+ default: t = 0; break;
+ }
+ if (t)
+ s = format (s, "%s", t);
+ else
+ s = format (s, "unknown 0x%x", mode);
+
+ return s;
+}
+
+u8 * format_srp_header_with_length (u8 * s, va_list * args)
+{
+ srp_and_ethernet_header_t * h = va_arg (*args, srp_and_ethernet_header_t *);
+ u32 max_header_bytes = va_arg (*args, u32);
+ ethernet_main_t * em = &ethernet_main;
+ uword indent, header_bytes;
+
+ header_bytes = sizeof (h[0]);
+ if (max_header_bytes != 0 && header_bytes > max_header_bytes)
+ return format (s, "srp header truncated");
+
+ indent = format_get_indent (s);
+
+ s = format (s, "mode %U, ring %s, priority %d, ttl %d",
+ format_srp_mode, h->srp.mode,
+ h->srp.is_inner_ring ? "inner" : "outer",
+ h->srp.priority, h->srp.ttl);
+
+ s = format (s, "\n%U%U: %U -> %U",
+ format_white_space, indent,
+ format_ethernet_type, clib_net_to_host_u16 (h->ethernet.type),
+ format_ethernet_address, h->ethernet.src_address,
+ format_ethernet_address, h->ethernet.dst_address);
+
+ if (max_header_bytes != 0 && header_bytes < max_header_bytes)
+ {
+ ethernet_type_info_t * ti;
+ vlib_node_t * node;
+
+ ti = ethernet_get_type_info (em, h->ethernet.type);
+ node = ti ? vlib_get_node (em->vlib_main, ti->node_index) : 0;
+ if (node && node->format_buffer)
+ s = format (s, "\n%U%U",
+ format_white_space, indent,
+ node->format_buffer, (void *) h + header_bytes,
+ max_header_bytes - header_bytes);
+ }
+
+ return s;
+}
+
+u8 * format_srp_header (u8 * s, va_list * args)
+{
+ srp_header_t * m = va_arg (*args, srp_header_t *);
+ return format (s, "%U", format_srp_header_with_length, m, 0);
+}
+
+uword
+unformat_srp_header (unformat_input_t * input, va_list * args)
+{
+ u8 ** result = va_arg (*args, u8 **);
+ srp_and_ethernet_header_t * h;
+
+ {
+ void * p;
+ vec_add2 (*result, p, sizeof (h[0]));
+ h = p;
+ }
+
+ if (! unformat (input, "%U: %U -> %U",
+ unformat_ethernet_type_net_byte_order, &h->ethernet.type,
+ unformat_ethernet_address, &h->ethernet.src_address,
+ unformat_ethernet_address, &h->ethernet.dst_address))
+ return 0;
+
+ h->srp.mode = SRP_MODE_data;
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ u32 x;
+
+ if (unformat (input, "control"))
+ h->srp.mode = SRP_MODE_control_pass_to_host;
+
+ else if (unformat (input, "pri %d", &x))
+ h->srp.priority = x;
+
+ else if (unformat (input, "ttl %d", &x))
+ h->srp.ttl = x;
+
+ else
+ return 0;
+ }
+
+ return 1;
+}