50705e8e3c
The macro RTE_VERIFY always checks a condition. It is optimized with "unlikely" hint. While this macro is well suited for test applications, it is preferred in libraries and examples to enable such check in debug mode. That's why the macro RTE_ASSERT is introduced to call RTE_VERIFY only if built with debug logs enabled. A lot of assert macros were duplicated and enabled with a specific flag. Removing these #ifdef allows to test these code branches more easily and avoid dead code pitfalls. The ENA_ASSERT is kept (in debug mode only) because it has more parameters to log. Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
162 lines
4.6 KiB
C
162 lines
4.6 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _IP_FRAG_COMMON_H_
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#define _IP_FRAG_COMMON_H_
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#include "rte_ip_frag.h"
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/* logging macros. */
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#ifdef RTE_LIBRTE_IP_FRAG_DEBUG
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#define IP_FRAG_LOG(lvl, fmt, args...) RTE_LOG(lvl, USER1, fmt, ##args)
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#else
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#define IP_FRAG_LOG(lvl, fmt, args...) do {} while(0)
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#endif /* IP_FRAG_DEBUG */
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#define IPV4_KEYLEN 1
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#define IPV6_KEYLEN 4
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/* helper macros */
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#define IP_FRAG_MBUF2DR(dr, mb) ((dr)->row[(dr)->cnt++] = (mb))
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#define IPv6_KEY_BYTES(key) \
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(key)[0], (key)[1], (key)[2], (key)[3]
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#define IPv6_KEY_BYTES_FMT \
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"%08" PRIx64 "%08" PRIx64 "%08" PRIx64 "%08" PRIx64
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/* internal functions declarations */
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struct rte_mbuf * ip_frag_process(struct ip_frag_pkt *fp,
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struct rte_ip_frag_death_row *dr, struct rte_mbuf *mb,
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uint16_t ofs, uint16_t len, uint16_t more_frags);
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struct ip_frag_pkt * ip_frag_find(struct rte_ip_frag_tbl *tbl,
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struct rte_ip_frag_death_row *dr,
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const struct ip_frag_key *key, uint64_t tms);
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struct ip_frag_pkt * ip_frag_lookup(struct rte_ip_frag_tbl *tbl,
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const struct ip_frag_key *key, uint64_t tms,
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struct ip_frag_pkt **free, struct ip_frag_pkt **stale);
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/* these functions need to be declared here as ip_frag_process relies on them */
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struct rte_mbuf *ipv4_frag_reassemble(struct ip_frag_pkt *fp);
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struct rte_mbuf *ipv6_frag_reassemble(struct ip_frag_pkt *fp);
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/*
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* misc frag key functions
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*/
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/* check if key is empty */
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static inline int
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ip_frag_key_is_empty(const struct ip_frag_key * key)
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{
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uint32_t i;
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for (i = 0; i < RTE_MIN(key->key_len, RTE_DIM(key->src_dst)); i++)
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if (key->src_dst[i] != 0)
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return 0;
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return 1;
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}
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/* empty the key */
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static inline void
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ip_frag_key_invalidate(struct ip_frag_key * key)
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{
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uint32_t i;
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for (i = 0; i < key->key_len; i++)
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key->src_dst[i] = 0;
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}
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/* compare two keys */
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static inline int
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ip_frag_key_cmp(const struct ip_frag_key * k1, const struct ip_frag_key * k2)
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{
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uint32_t i, val;
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val = k1->id ^ k2->id;
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for (i = 0; i < k1->key_len; i++)
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val |= k1->src_dst[i] ^ k2->src_dst[i];
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return val;
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}
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/*
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* misc fragment functions
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*/
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/* put fragment on death row */
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static inline void
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ip_frag_free(struct ip_frag_pkt *fp, struct rte_ip_frag_death_row *dr)
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{
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uint32_t i, k;
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k = dr->cnt;
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for (i = 0; i != fp->last_idx; i++) {
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if (fp->frags[i].mb != NULL) {
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dr->row[k++] = fp->frags[i].mb;
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fp->frags[i].mb = NULL;
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}
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}
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fp->last_idx = 0;
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dr->cnt = k;
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}
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/* if key is empty, mark key as in use */
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static inline void
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ip_frag_inuse(struct rte_ip_frag_tbl *tbl, const struct ip_frag_pkt *fp)
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{
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if (ip_frag_key_is_empty(&fp->key)) {
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TAILQ_REMOVE(&tbl->lru, fp, lru);
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tbl->use_entries--;
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}
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}
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/* reset the fragment */
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static inline void
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ip_frag_reset(struct ip_frag_pkt *fp, uint64_t tms)
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{
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static const struct ip_frag zero_frag = {
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.ofs = 0,
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.len = 0,
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.mb = NULL,
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};
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fp->start = tms;
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fp->total_size = UINT32_MAX;
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fp->frag_size = 0;
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fp->last_idx = IP_MIN_FRAG_NUM;
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fp->frags[IP_LAST_FRAG_IDX] = zero_frag;
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fp->frags[IP_FIRST_FRAG_IDX] = zero_frag;
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}
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#endif /* _IP_FRAG_COMMON_H_ */
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