diff options
Diffstat (limited to 'src/vnet/srp/format.c')
| -rw-r--r-- | src/vnet/srp/format.c | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/src/vnet/srp/format.c b/src/vnet/srp/format.c new file mode 100644 index 00000000..a0250cc9 --- /dev/null +++ b/src/vnet/srp/format.c @@ -0,0 +1,147 @@ +/* + * 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 = ðernet_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; +} |