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-rw-r--r--src/vnet/ethernet/format.c348
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diff --git a/src/vnet/ethernet/format.c b/src/vnet/ethernet/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.
+ */
+/*
+ * ethernet_format.c: ethernet 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/ethernet/ethernet.h>
+
+u8 *
+format_ethernet_address (u8 * s, va_list * args)
+{
+ ethernet_main_t *em = &ethernet_main;
+ u8 *a = va_arg (*args, u8 *);
+
+ if (em->format_ethernet_address_16bit)
+ return format (s, "%02x%02x.%02x%02x.%02x%02x",
+ a[0], a[1], a[2], a[3], a[4], a[5]);
+ else
+ return format (s, "%02x:%02x:%02x:%02x:%02x:%02x",
+ a[0], a[1], a[2], a[3], a[4], a[5]);
+}
+
+u8 *
+format_ethernet_type (u8 * s, va_list * args)
+{
+ ethernet_type_t type = va_arg (*args, u32);
+ ethernet_main_t *em = &ethernet_main;
+ ethernet_type_info_t *t = ethernet_get_type_info (em, type);
+
+ if (t)
+ s = format (s, "%s", t->name);
+ else
+ s = format (s, "0x%04x", type);
+
+ return s;
+}
+
+u8 *
+format_ethernet_vlan_tci (u8 * s, va_list * va)
+{
+ u32 vlan_tci = va_arg (*va, u32);
+
+ u32 vid = (vlan_tci & 0xfff);
+ u32 cfi = (vlan_tci >> 12) & 1;
+ u32 pri = (vlan_tci >> 13);
+
+ s = format (s, "%d", vid);
+ if (pri != 0)
+ s = format (s, " priority %d", pri);
+ if (cfi != 0)
+ s = format (s, " cfi");
+
+ return s;
+}
+
+u8 *
+format_ethernet_header_with_length (u8 * s, va_list * args)
+{
+ ethernet_pbb_header_packed_t *ph =
+ va_arg (*args, ethernet_pbb_header_packed_t *);
+ ethernet_max_header_t *m = (ethernet_max_header_t *) ph;
+ u32 max_header_bytes = va_arg (*args, u32);
+ ethernet_main_t *em = &ethernet_main;
+ ethernet_header_t *e = &m->ethernet;
+ ethernet_vlan_header_t *v;
+ ethernet_type_t type = clib_net_to_host_u16 (e->type);
+ ethernet_type_t vlan_type[ARRAY_LEN (m->vlan)];
+ u32 n_vlan = 0, i, header_bytes;
+ uword indent;
+
+ while ((type == ETHERNET_TYPE_VLAN || type == ETHERNET_TYPE_DOT1AD
+ || type == ETHERNET_TYPE_DOT1AH) && n_vlan < ARRAY_LEN (m->vlan))
+ {
+ vlan_type[n_vlan] = type;
+ if (type != ETHERNET_TYPE_DOT1AH)
+ {
+ v = m->vlan + n_vlan;
+ type = clib_net_to_host_u16 (v->type);
+ }
+ n_vlan++;
+ }
+
+ header_bytes = sizeof (e[0]) + n_vlan * sizeof (v[0]);
+ if (max_header_bytes != 0 && header_bytes > max_header_bytes)
+ return format (s, "ethernet header truncated");
+
+ indent = format_get_indent (s);
+
+ s = format (s, "%U: %U -> %U",
+ format_ethernet_type, type,
+ format_ethernet_address, e->src_address,
+ format_ethernet_address, e->dst_address);
+
+ if (type != ETHERNET_TYPE_DOT1AH)
+ {
+ for (i = 0; i < n_vlan; i++)
+ {
+ u32 v = clib_net_to_host_u16 (m->vlan[i].priority_cfi_and_id);
+ if (*vlan_type == ETHERNET_TYPE_VLAN)
+ s = format (s, " 802.1q vlan %U", format_ethernet_vlan_tci, v);
+ else
+ s = format (s, " 802.1ad vlan %U", format_ethernet_vlan_tci, v);
+ }
+
+ if (max_header_bytes != 0 && header_bytes < max_header_bytes)
+ {
+ ethernet_type_info_t *ti;
+ vlib_node_t *node = 0;
+
+ ti = ethernet_get_type_info (em, type);
+ if (ti && ti->node_index != ~0)
+ node = vlib_get_node (em->vlib_main, ti->node_index);
+ if (node && node->format_buffer)
+ s = format (s, "\n%U%U",
+ format_white_space, indent,
+ node->format_buffer, (void *) m + header_bytes,
+ max_header_bytes - header_bytes);
+ }
+ }
+ else
+ {
+ s =
+ format (s, " %s b-tag %04X",
+ (clib_net_to_host_u16 (ph->b_type) ==
+ ETHERNET_TYPE_DOT1AD) ? "802.1ad" : "",
+ clib_net_to_host_u16 (ph->priority_dei_id));
+ s =
+ format (s, " %s i-tag %08X",
+ (clib_net_to_host_u16 (ph->i_type) ==
+ ETHERNET_TYPE_DOT1AH) ? "802.1ah" : "",
+ clib_net_to_host_u32 (ph->priority_dei_uca_res_sid));
+ }
+
+ return s;
+}
+
+u8 *
+format_ethernet_header (u8 * s, va_list * args)
+{
+ ethernet_max_header_t *m = va_arg (*args, ethernet_max_header_t *);
+ return format (s, "%U", format_ethernet_header_with_length, m, 0);
+}
+
+/* Parse X:X:X:X:X:X unix style ethernet address. */
+static uword
+unformat_ethernet_address_unix (unformat_input_t * input, va_list * args)
+{
+ u8 *result = va_arg (*args, u8 *);
+ u32 i, a[6];
+
+ if (!unformat (input, "%_%x:%x:%x:%x:%x:%x%_",
+ &a[0], &a[1], &a[2], &a[3], &a[4], &a[5]))
+ return 0;
+
+ /* Check range. */
+ for (i = 0; i < ARRAY_LEN (a); i++)
+ if (a[i] >= (1 << 8))
+ return 0;
+
+ for (i = 0; i < ARRAY_LEN (a); i++)
+ result[i] = a[i];
+
+ return 1;
+}
+
+/* Parse X.X.X cisco style ethernet address. */
+static uword
+unformat_ethernet_address_cisco (unformat_input_t * input, va_list * args)
+{
+ u8 *result = va_arg (*args, u8 *);
+ u32 i, a[3];
+
+ if (!unformat (input, "%_%x.%x.%x%_", &a[0], &a[1], &a[2]))
+ return 0;
+
+ /* Check range. */
+ for (i = 0; i < ARRAY_LEN (a); i++)
+ if (a[i] >= (1 << 16))
+ return 0;
+
+ result[0] = (a[0] >> 8) & 0xff;
+ result[1] = (a[0] >> 0) & 0xff;
+ result[2] = (a[1] >> 8) & 0xff;
+ result[3] = (a[1] >> 0) & 0xff;
+ result[4] = (a[2] >> 8) & 0xff;
+ result[5] = (a[2] >> 0) & 0xff;
+
+ return 1;
+}
+
+/* Parse ethernet address; accept either unix or style addresses. */
+uword
+unformat_ethernet_address (unformat_input_t * input, va_list * args)
+{
+ u8 *result = va_arg (*args, u8 *);
+ return (unformat_user (input, unformat_ethernet_address_unix, result)
+ || unformat_user (input, unformat_ethernet_address_cisco, result));
+}
+
+/* Returns ethernet type as an int in host byte order. */
+uword
+unformat_ethernet_type_host_byte_order (unformat_input_t * input,
+ va_list * args)
+{
+ u16 *result = va_arg (*args, u16 *);
+ ethernet_main_t *em = &ethernet_main;
+ int type, i;
+
+ /* Numeric type. */
+ if (unformat (input, "0x%x", &type) || unformat (input, "%d", &type))
+ {
+ if (type >= (1 << 16))
+ return 0;
+ *result = type;
+ return 1;
+ }
+
+ /* Named type. */
+ if (unformat_user (input, unformat_vlib_number_by_name,
+ em->type_info_by_name, &i))
+ {
+ ethernet_type_info_t *ti = vec_elt_at_index (em->type_infos, i);
+ *result = ti->type;
+ return 1;
+ }
+
+ return 0;
+}
+
+uword
+unformat_ethernet_type_net_byte_order (unformat_input_t * input,
+ va_list * args)
+{
+ u16 *result = va_arg (*args, u16 *);
+ if (!unformat_user (input, unformat_ethernet_type_host_byte_order, result))
+ return 0;
+
+ *result = clib_host_to_net_u16 ((u16) * result);
+ return 1;
+}
+
+uword
+unformat_ethernet_header (unformat_input_t * input, va_list * args)
+{
+ u8 **result = va_arg (*args, u8 **);
+ ethernet_max_header_t _m, *m = &_m;
+ ethernet_header_t *e = &m->ethernet;
+ u16 type;
+ u32 n_vlan;
+
+ if (!unformat (input, "%U: %U -> %U",
+ unformat_ethernet_type_host_byte_order, &type,
+ unformat_ethernet_address, &e->src_address,
+ unformat_ethernet_address, &e->dst_address))
+ return 0;
+
+ n_vlan = 0;
+ while (unformat (input, "vlan"))
+ {
+ u32 id, priority;
+
+ if (!unformat_user (input, unformat_vlib_number, &id)
+ || id >= ETHERNET_N_VLAN)
+ return 0;
+
+ if (unformat (input, "priority %d", &priority))
+ {
+ if (priority >= 8)
+ return 0;
+ id |= priority << 13;
+ }
+
+ if (unformat (input, "cfi"))
+ id |= 1 << 12;
+
+ /* Too many vlans given. */
+ if (n_vlan >= ARRAY_LEN (m->vlan))
+ return 0;
+
+ m->vlan[n_vlan].priority_cfi_and_id = clib_host_to_net_u16 (id);
+ n_vlan++;
+ }
+
+ if (n_vlan == 0)
+ e->type = clib_host_to_net_u16 (type);
+ else
+ {
+ int i;
+
+ e->type = clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
+ for (i = 0; i < n_vlan - 1; i++)
+ m->vlan[i].type = clib_host_to_net_u16 (ETHERNET_TYPE_VLAN);
+ m->vlan[n_vlan - 1].type = clib_host_to_net_u16 (type);
+ }
+
+ /* Add header to result. */
+ {
+ void *p;
+ u32 n_bytes = sizeof (e[0]) + n_vlan * sizeof (m->vlan[0]);
+
+ vec_add2 (*result, p, n_bytes);
+ clib_memcpy (p, m, n_bytes);
+ }
+
+ return 1;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */