vpp - Vector Packet Processing

diff options

Diffstat (limited to 'src/scripts/generate_version_h')

-rwxr-xr-x

1 files changed, 8 insertions, 3 deletions

/* * Copyright (c) 2018 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. */ #ifndef included_ring_h #define included_ring_h #include <vppinfra/error.h> #include <vppinfra/format.h> #include <vppinfra/vec.h> #include <vppinfra/vector.h> typedef struct { u32 next, n_enq; } clib_ring_header_t; always_inline clib_ring_header_t * clib_ring_header (void *v) { return vec_aligned_header (v, sizeof (clib_ring_header_t), sizeof (void *)); } always_inline void clib_ring_new_inline (void **p, u32 elt_bytes, u32 size, u32 align) { void *v; clib_ring_header_t *h; v = _vec_resize ((void *) 0, /* length increment */ size, /* data bytes */ elt_bytes * size, /* header bytes */ sizeof (h[0]), /* data align */ align); h = clib_ring_header (v); h->next = 0; h->n_enq = 0; p[0] = v; } #define clib_ring_new_aligned(ring, size, align) \ { clib_ring_new_inline ((void **)&(ring), sizeof(ring[0]), size, align); } #define clib_ring_new(ring, size) \ { clib_ring_new_inline ((void **)&(ring), sizeof(ring[0]), size, 0);} #define clib_ring_free(f) vec_free_h((f), sizeof(clib_ring_header_t)) always_inline u32 clib_ring_n_enq (void *v) { clib_ring_header_t *h = clib_ring_header (v); return h->n_enq; } always_inline void * clib_ring_get_last_inline (void *v, u32 elt_bytes, int enqueue) { clib_ring_header_t *h = clib_ring_header (v); u32 slot; if (enqueue) { if (h->n_enq == _vec_len (v)) return 0; slot = h->next; h->n_enq++; h->next++; if (h->next == _vec_len (v)) h->next = 0; } else { if (h->n_enq == 0) return 0; slot = h->next == 0 ? _vec_len (v) - 1 : h->next - 1; } return (void *) ((u8 *) v + elt_bytes * slot); } #define clib_ring_enq(ring) \ clib_ring_get_last_inline (ring, sizeof(ring[0]), 1) #define clib_ring_get_last(ring) \ clib_ring_get_last_inline (ring, sizeof(ring[0]), 0) always_inline void * clib_ring_get_first_inline (void *v, u32 elt_bytes, int dequeue) { clib_ring_header_t *h = clib_ring_header (v); u32 slot; if (h->n_enq == 0) return 0; if (h->n_enq > h->next) slot = _vec_len (v) + h->next - h->n_enq; else slot = h->next - h->n_enq; if (dequeue) h->n_enq--; return (void *) ((u8 *) v + elt_bytes * slot); } #define clib_ring_deq(ring) \ clib_ring_get_first_inline (ring, sizeof(ring[0]), 1) #define clib_ring_get_first(ring) \ clib_ring_get_first_inline (ring, sizeof(ring[0]), 0) #endif /* included_ring_h */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


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