f883f6a113
Rewrite vlib_buffer_chain_linearize function so that it works as intended. Linearize buffer chains coming out of reassembly to work around some dpdk-tx issues. Note that this is not a complete workaround as a sufficiently large packet will still cause the resulting chain to be too long. Drop features from reassembly code which relies on knowing which and how many buffers were freed during linearization, buffer counts and tracing capabilities for these cases. Change-Id: Ic65de53ecb5c78cd96b178033f6a576ab4060ed1 Signed-off-by: Klement Sekera <ksekera@cisco.com>
124 lines
4.1 KiB
C
124 lines
4.1 KiB
C
/*
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* Copyright (c) 2015 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* physmem.h: virtual <-> physical memory mapping for VLIB buffers
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*
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* Copyright (c) 2008 Eliot Dresselhaus
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef included_vlib_physmem_funcs_h
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#define included_vlib_physmem_funcs_h
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#include <vppinfra/clib.h>
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#include <vppinfra/clib_error.h>
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#include <vlib/physmem.h>
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#include <vlib/main.h>
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clib_error_t *vlib_physmem_init (vlib_main_t * vm);
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clib_error_t *vlib_physmem_shared_map_create (vlib_main_t * vm, char *name,
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uword size, u32 log2_page_sz,
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u32 numa_node, u32 * map_index);
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vlib_physmem_map_t *vlib_physmem_get_map (vlib_main_t * vm, u32 index);
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always_inline void *
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vlib_physmem_alloc_aligned (vlib_main_t * vm, uword n_bytes, uword alignment)
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{
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clib_pmalloc_main_t *pm = vm->physmem_main.pmalloc_main;
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return clib_pmalloc_alloc_aligned (pm, n_bytes, alignment);
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}
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always_inline void *
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vlib_physmem_alloc_aligned_on_numa (vlib_main_t * vm, uword n_bytes,
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uword alignment, u32 numa_node)
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{
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clib_pmalloc_main_t *pm = vm->physmem_main.pmalloc_main;
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return clib_pmalloc_alloc_aligned_on_numa (pm, n_bytes, alignment,
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numa_node);
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}
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/* By default allocate I/O memory with cache line alignment. */
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always_inline void *
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vlib_physmem_alloc (vlib_main_t * vm, uword n_bytes)
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{
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return vlib_physmem_alloc_aligned (vm, n_bytes, CLIB_CACHE_LINE_BYTES);
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}
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always_inline void *
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vlib_physmem_alloc_from_map (vlib_main_t * vm, u32 physmem_map_index,
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uword n_bytes, uword alignment)
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{
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clib_pmalloc_main_t *pm = vm->physmem_main.pmalloc_main;
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vlib_physmem_map_t *map = vlib_physmem_get_map (vm, physmem_map_index);
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return clib_pmalloc_alloc_from_arena (pm, map->base, n_bytes,
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CLIB_CACHE_LINE_BYTES);
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}
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always_inline void
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vlib_physmem_free (vlib_main_t * vm, void *p)
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{
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if (p)
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clib_pmalloc_free (vm->physmem_main.pmalloc_main, p);
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}
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always_inline u64
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vlib_physmem_get_page_index (vlib_main_t * vm, void *mem)
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{
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clib_pmalloc_main_t *pm = vm->physmem_main.pmalloc_main;
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return clib_pmalloc_get_page_index (pm, mem);
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}
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always_inline u64
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vlib_physmem_get_pa (vlib_main_t * vm, void *mem)
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{
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clib_pmalloc_main_t *pm = vm->physmem_main.pmalloc_main;
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return clib_pmalloc_get_pa (pm, mem);
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}
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always_inline clib_error_t *
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vlib_physmem_last_error (struct vlib_main_t * vm)
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{
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return clib_error_return (0, "unknown error");
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}
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#endif /* included_vlib_physmem_funcs_h */
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/*
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* fd.io coding-style-patch-verification: ON
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*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
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