369991d997
Replace the BSD license header with the SPDX tag for files with only an Intel copyright on them. Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
153 lines
3.5 KiB
C
153 lines
3.5 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2014 Intel Corporation
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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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/* delete fragment's mbufs immediately instead of using death row */
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static inline void
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ip_frag_free_immediate(struct ip_frag_pkt *fp)
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{
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uint32_t i;
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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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IP_FRAG_LOG(DEBUG, "%s:%d\n"
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"mbuf: %p, tms: %" PRIu64", key: <%" PRIx64 ", %#x>\n",
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__func__, __LINE__, fp->frags[i].mb, fp->start,
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fp->key.src_dst[0], fp->key.id);
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rte_pktmbuf_free(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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}
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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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