1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
5 #ifndef _IP_FRAG_COMMON_H_
6 #define _IP_FRAG_COMMON_H_
8 #include "rte_ip_frag.h"
11 #ifdef RTE_LIBRTE_IP_FRAG_DEBUG
12 #define IP_FRAG_LOG(lvl, fmt, args...) RTE_LOG(lvl, USER1, fmt, ##args)
14 #define IP_FRAG_LOG(lvl, fmt, args...) do {} while(0)
15 #endif /* IP_FRAG_DEBUG */
21 #define IP_FRAG_MBUF2DR(dr, mb) ((dr)->row[(dr)->cnt++] = (mb))
23 #define IPv6_KEY_BYTES(key) \
24 (key)[0], (key)[1], (key)[2], (key)[3]
25 #define IPv6_KEY_BYTES_FMT \
26 "%08" PRIx64 "%08" PRIx64 "%08" PRIx64 "%08" PRIx64
28 /* internal functions declarations */
29 struct rte_mbuf * ip_frag_process(struct ip_frag_pkt *fp,
30 struct rte_ip_frag_death_row *dr, struct rte_mbuf *mb,
31 uint16_t ofs, uint16_t len, uint16_t more_frags);
33 struct ip_frag_pkt * ip_frag_find(struct rte_ip_frag_tbl *tbl,
34 struct rte_ip_frag_death_row *dr,
35 const struct ip_frag_key *key, uint64_t tms);
37 struct ip_frag_pkt * ip_frag_lookup(struct rte_ip_frag_tbl *tbl,
38 const struct ip_frag_key *key, uint64_t tms,
39 struct ip_frag_pkt **free, struct ip_frag_pkt **stale);
41 /* these functions need to be declared here as ip_frag_process relies on them */
42 struct rte_mbuf *ipv4_frag_reassemble(struct ip_frag_pkt *fp);
43 struct rte_mbuf *ipv6_frag_reassemble(struct ip_frag_pkt *fp);
48 * misc frag key functions
51 /* check if key is empty */
53 ip_frag_key_is_empty(const struct ip_frag_key * key)
56 for (i = 0; i < RTE_MIN(key->key_len, RTE_DIM(key->src_dst)); i++)
57 if (key->src_dst[i] != 0)
64 ip_frag_key_invalidate(struct ip_frag_key * key)
67 for (i = 0; i < key->key_len; i++)
71 /* compare two keys */
73 ip_frag_key_cmp(const struct ip_frag_key * k1, const struct ip_frag_key * k2)
76 val = k1->id ^ k2->id;
77 for (i = 0; i < k1->key_len; i++)
78 val |= k1->src_dst[i] ^ k2->src_dst[i];
83 * misc fragment functions
86 /* put fragment on death row */
88 ip_frag_free(struct ip_frag_pkt *fp, struct rte_ip_frag_death_row *dr)
93 for (i = 0; i != fp->last_idx; i++) {
94 if (fp->frags[i].mb != NULL) {
95 dr->row[k++] = fp->frags[i].mb;
96 fp->frags[i].mb = NULL;
104 /* delete fragment's mbufs immediately instead of using death row */
106 ip_frag_free_immediate(struct ip_frag_pkt *fp)
110 for (i = 0; i < fp->last_idx; i++) {
111 if (fp->frags[i].mb != NULL) {
112 IP_FRAG_LOG(DEBUG, "%s:%d\n"
113 "mbuf: %p, tms: %" PRIu64", key: <%" PRIx64 ", %#x>\n",
114 __func__, __LINE__, fp->frags[i].mb, fp->start,
115 fp->key.src_dst[0], fp->key.id);
116 rte_pktmbuf_free(fp->frags[i].mb);
117 fp->frags[i].mb = NULL;
124 /* if key is empty, mark key as in use */
126 ip_frag_inuse(struct rte_ip_frag_tbl *tbl, const struct ip_frag_pkt *fp)
128 if (ip_frag_key_is_empty(&fp->key)) {
129 TAILQ_REMOVE(&tbl->lru, fp, lru);
134 /* reset the fragment */
136 ip_frag_reset(struct ip_frag_pkt *fp, uint64_t tms)
138 static const struct ip_frag zero_frag = {
145 fp->total_size = UINT32_MAX;
147 fp->last_idx = IP_MIN_FRAG_NUM;
148 fp->frags[IP_LAST_FRAG_IDX] = zero_frag;
149 fp->frags[IP_FIRST_FRAG_IDX] = zero_frag;
152 #endif /* _IP_FRAG_COMMON_H_ */