doc: add Meson coding style to contributors guide

[dpdk.git] / lib / librte_ip_frag / ip_frag_common.h

diff --git a/lib/librte_ip_frag/ip_frag_common.h b/lib/librte_ip_frag/ip_frag_common.h
index 9f56196..a17a740 100644 (file)
--- a/lib/librte_ip_frag/ip_frag_common.h
+++ b/lib/librte_ip_frag/ip_frag_common.h
@@ -1,34 +1,5 @@
-/*-
- *   BSD LICENSE
- *
- *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- *   All rights reserved.
- *
- *   Redistribution and use in source and binary forms, with or without
- *   modification, are permitted provided that the following conditions
- *   are met:
- *
- *     * Redistributions of source code must retain the above copyright
- *       notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above copyright
- *       notice, this list of conditions and the following disclaimer in
- *       the documentation and/or other materials provided with the
- *       distribution.
- *     * Neither the name of Intel Corporation nor the names of its
- *       contributors may be used to endorse or promote products derived
- *       from this software without specific prior written permission.
- *
- *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
  */
 
 #ifndef _IP_FRAG_COMMON_H_
@@ -54,6 +25,12 @@
 #define IPv6_KEY_BYTES_FMT \
        "%08" PRIx64 "%08" PRIx64 "%08" PRIx64 "%08" PRIx64
 
+#ifdef RTE_LIBRTE_IP_FRAG_TBL_STAT
+#define        IP_FRAG_TBL_STAT_UPDATE(s, f, v)        ((s)->f += (v))
+#else
+#define        IP_FRAG_TBL_STAT_UPDATE(s, f, v)        do {} while (0)
+#endif /* IP_FRAG_TBL_STAT */
+
 /* internal functions declarations */
 struct rte_mbuf * ip_frag_process(struct ip_frag_pkt *fp,
                struct rte_ip_frag_death_row *dr, struct rte_mbuf *mb,
@@ -81,28 +58,23 @@ struct rte_mbuf *ipv6_frag_reassemble(struct ip_frag_pkt *fp);
 static inline int
 ip_frag_key_is_empty(const struct ip_frag_key * key)
 {
-       uint32_t i;
-       for (i = 0; i < RTE_MIN(key->key_len, RTE_DIM(key->src_dst)); i++)
-               if (key->src_dst[i] != 0)
-                       return 0;
-       return 1;
+       return (key->key_len == 0);
 }
 
-/* empty the key */
+/* invalidate the key */
 static inline void
 ip_frag_key_invalidate(struct ip_frag_key * key)
 {
-       uint32_t i;
-       for (i = 0; i < key->key_len; i++)
-               key->src_dst[i] = 0;
+       key->key_len = 0;
 }
 
 /* compare two keys */
-static inline int
+static inline uint64_t
 ip_frag_key_cmp(const struct ip_frag_key * k1, const struct ip_frag_key * k2)
 {
-       uint32_t i, val;
-       val = k1->id ^ k2->id;
+       uint32_t i;
+       uint64_t val;
+       val = k1->id_key_len ^ k2->id_key_len;
        for (i = 0; i < k1->key_len; i++)
                val |= k1->src_dst[i] ^ k2->src_dst[i];
        return val;
@@ -178,4 +150,16 @@ ip_frag_reset(struct ip_frag_pkt *fp, uint64_t tms)
        fp->frags[IP_FIRST_FRAG_IDX] = zero_frag;
 }
 
+/* local frag table helper functions */
+static inline void
+ip_frag_tbl_del(struct rte_ip_frag_tbl *tbl, struct rte_ip_frag_death_row *dr,
+       struct ip_frag_pkt *fp)
+{
+       ip_frag_free(fp, dr);
+       ip_frag_key_invalidate(&fp->key);
+       TAILQ_REMOVE(&tbl->lru, fp, lru);
+       tbl->use_entries--;
+       IP_FRAG_TBL_STAT_UPDATE(&tbl->stat, del_num, 1);
+}
+
 #endif /* _IP_FRAG_COMMON_H_ */