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Diffstat (limited to 'src/vnet/ethernet/format.c')
| -rw-r--r-- | src/vnet/ethernet/format.c | 366 |
1 files changed, 366 insertions, 0 deletions
diff --git a/src/vnet/ethernet/format.c b/src/vnet/ethernet/format.c new file mode 100644 index 00000000..4edef5ad --- /dev/null +++ b/src/vnet/ethernet/format.c @@ -0,0 +1,366 @@ +/* + * 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 = ðernet_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 = ðernet_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_pbb (u8 * s, va_list * va) +{ + u32 b_tag = va_arg (*va, u32); + u32 i_tag = va_arg (*va, u32); + u32 vid = (b_tag & 0xfff); + u32 bdei = (b_tag >> 12) & 1; + u32 bpcp = (b_tag >> 13); + u32 sid = (i_tag & 0xffffff); + u8 ires = (i_tag >> 24) & 3; + u8 iuca = (i_tag >> 27) & 1; + u8 idei = (i_tag >> 28) & 1; + u8 ipcp = (i_tag >> 29); + + s = + format (s, "B_tag %04X (vid %d, dei %d, pcp %d), ", b_tag, vid, bdei, + bpcp); + s = + format (s, "I_tag %08X (sid %d, res %d, dei %d, pcp %d)", i_tag, sid, + ires, iuca, idei, ipcp); + + 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 = ðernet_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, "\n%UPBB header : %U", format_white_space, indent, + format_ethernet_pbb, + clib_net_to_host_u16 (ph->priority_dei_id), + 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 = ðernet_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: + */ |