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34 #ifndef _IP_FRAG_COMMON_H_
35 #define _IP_FRAG_COMMON_H_
37 #include "rte_ip_frag.h"
40 #ifdef RTE_LIBRTE_IP_FRAG_DEBUG
41 #define IP_FRAG_LOG(lvl, fmt, args...) RTE_LOG(lvl, USER1, fmt, ##args)
43 #define IP_FRAG_LOG(lvl, fmt, args...) do {} while(0)
44 #endif /* IP_FRAG_DEBUG */
50 #define IP_FRAG_MBUF2DR(dr, mb) ((dr)->row[(dr)->cnt++] = (mb))
52 #define IPv6_KEY_BYTES(key) \
53 (key)[0], (key)[1], (key)[2], (key)[3]
54 #define IPv6_KEY_BYTES_FMT \
55 "%08" PRIx64 "%08" PRIx64 "%08" PRIx64 "%08" PRIx64
57 /* internal functions declarations */
58 struct rte_mbuf * ip_frag_process(struct ip_frag_pkt *fp,
59 struct rte_ip_frag_death_row *dr, struct rte_mbuf *mb,
60 uint16_t ofs, uint16_t len, uint16_t more_frags);
62 struct ip_frag_pkt * ip_frag_find(struct rte_ip_frag_tbl *tbl,
63 struct rte_ip_frag_death_row *dr,
64 const struct ip_frag_key *key, uint64_t tms);
66 struct ip_frag_pkt * ip_frag_lookup(struct rte_ip_frag_tbl *tbl,
67 const struct ip_frag_key *key, uint64_t tms,
68 struct ip_frag_pkt **free, struct ip_frag_pkt **stale);
70 /* these functions need to be declared here as ip_frag_process relies on them */
71 struct rte_mbuf *ipv4_frag_reassemble(struct ip_frag_pkt *fp);
72 struct rte_mbuf *ipv6_frag_reassemble(struct ip_frag_pkt *fp);
77 * misc frag key functions
80 /* check if key is empty */
82 ip_frag_key_is_empty(const struct ip_frag_key * key)
85 for (i = 0; i < RTE_MIN(key->key_len, RTE_DIM(key->src_dst)); i++)
86 if (key->src_dst[i] != 0)
93 ip_frag_key_invalidate(struct ip_frag_key * key)
96 for (i = 0; i < key->key_len; i++)
100 /* compare two keys */
102 ip_frag_key_cmp(const struct ip_frag_key * k1, const struct ip_frag_key * k2)
105 val = k1->id ^ k2->id;
106 for (i = 0; i < k1->key_len; i++)
107 val |= k1->src_dst[i] ^ k2->src_dst[i];
112 * misc fragment functions
115 /* put fragment on death row */
117 ip_frag_free(struct ip_frag_pkt *fp, struct rte_ip_frag_death_row *dr)
122 for (i = 0; i != fp->last_idx; i++) {
123 if (fp->frags[i].mb != NULL) {
124 dr->row[k++] = fp->frags[i].mb;
125 fp->frags[i].mb = NULL;
133 /* delete fragment's mbufs immediately instead of using death row */
135 ip_frag_free_immediate(struct ip_frag_pkt *fp)
139 for (i = 0; i < fp->last_idx; i++) {
140 if (fp->frags[i].mb != NULL) {
141 IP_FRAG_LOG(DEBUG, "%s:%d\n"
142 "mbuf: %p, tms: %" PRIu64", key: <%" PRIx64 ", %#x>\n",
143 __func__, __LINE__, fp->frags[i].mb, fp->start,
144 fp->key.src_dst[0], fp->key.id);
145 rte_pktmbuf_free(fp->frags[i].mb);
146 fp->frags[i].mb = NULL;
153 /* if key is empty, mark key as in use */
155 ip_frag_inuse(struct rte_ip_frag_tbl *tbl, const struct ip_frag_pkt *fp)
157 if (ip_frag_key_is_empty(&fp->key)) {
158 TAILQ_REMOVE(&tbl->lru, fp, lru);
163 /* reset the fragment */
165 ip_frag_reset(struct ip_frag_pkt *fp, uint64_t tms)
167 static const struct ip_frag zero_frag = {
174 fp->total_size = UINT32_MAX;
176 fp->last_idx = IP_MIN_FRAG_NUM;
177 fp->frags[IP_LAST_FRAG_IDX] = zero_frag;
178 fp->frags[IP_FIRST_FRAG_IDX] = zero_frag;
181 #endif /* _IP_FRAG_COMMON_H_ */