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/*
* Copyright (c) 2016 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.
*/
#include <vnet/vnet.h>
#include <vnet/lisp-cp/lisp_types.h>
#define IP_DF 0x4000 /* don't fragment */
void *pkt_push_ip (vlib_main_t * vm, vlib_buffer_t * b, ip_address_t * src,
ip_address_t * dst, u32 proto);
void *pkt_push_udp_and_ip (vlib_main_t * vm, vlib_buffer_t * b, u16 sp,
u16 dp, ip_address_t * sip, ip_address_t * dip);
void *pkt_push_ecm_hdr (vlib_buffer_t * b);
always_inline u8 *
vlib_buffer_get_tail (vlib_buffer_t * b)
{
return b->data + b->current_data + b->current_length;
}
always_inline void *
vlib_buffer_put_uninit (vlib_buffer_t * b, u8 size)
{
/* XXX should make sure there's enough space! */
void *p = vlib_buffer_get_tail (b);
b->current_length += size;
return p;
}
always_inline void *
vlib_buffer_push_uninit (vlib_buffer_t * b, u8 size)
{
/* XXX should make sure there's enough space! */
ASSERT (b->current_data >= size);
b->current_data -= size;
b->current_length += size;
return vlib_buffer_get_current (b);
}
always_inline void *
vlib_buffer_make_headroom (vlib_buffer_t * b, u8 size)
{
/* XXX should make sure there's enough space! */
b->current_data += size;
return vlib_buffer_get_current (b);
}
always_inline void *
vlib_buffer_pull (vlib_buffer_t * b, u8 size)
{
if (b->current_length < size)
return 0;
void *data = vlib_buffer_get_current (b);
vlib_buffer_advance (b, size);
return data;
}
/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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