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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
42 #define IP_FRAG_LOG(lvl, fmt, args...) RTE_LOG(lvl, USER1, fmt, ##args)
44 #define IP_FRAG_ASSERT(exp) \
46 rte_panic("function %s, line%d\tassert \"" #exp "\" failed\n", \
47 __func__, __LINE__); \
50 #define IP_FRAG_LOG(lvl, fmt, args...) do {} while(0)
51 #define IP_FRAG_ASSERT(exp) do {} while (0)
52 #endif /* IP_FRAG_DEBUG */
58 #define IP_FRAG_MBUF2DR(dr, mb) ((dr)->row[(dr)->cnt++] = (mb))
60 #define IPv6_KEY_BYTES(key) \
61 (key)[0], (key)[1], (key)[2], (key)[3]
62 #define IPv6_KEY_BYTES_FMT \
63 "%08" PRIx64 "%08" PRIx64 "%08" PRIx64 "%08" PRIx64
65 /* internal functions declarations */
66 struct rte_mbuf * ip_frag_process(struct ip_frag_pkt *fp,
67 struct rte_ip_frag_death_row *dr, struct rte_mbuf *mb,
68 uint16_t ofs, uint16_t len, uint16_t more_frags);
70 struct ip_frag_pkt * ip_frag_find(struct rte_ip_frag_tbl *tbl,
71 struct rte_ip_frag_death_row *dr,
72 const struct ip_frag_key *key, uint64_t tms);
74 struct ip_frag_pkt * ip_frag_lookup(struct rte_ip_frag_tbl *tbl,
75 const struct ip_frag_key *key, uint64_t tms,
76 struct ip_frag_pkt **free, struct ip_frag_pkt **stale);
78 /* these functions need to be declared here as ip_frag_process relies on them */
79 struct rte_mbuf * ipv4_frag_reassemble(const struct ip_frag_pkt *fp);
80 struct rte_mbuf * ipv6_frag_reassemble(const struct ip_frag_pkt *fp);
85 * misc frag key functions
88 /* check if key is empty */
90 ip_frag_key_is_empty(const struct ip_frag_key * key)
93 for (i = 0; i < RTE_MIN(key->key_len, RTE_DIM(key->src_dst)); i++)
94 if (key->src_dst[i] != 0)
101 ip_frag_key_invalidate(struct ip_frag_key * key)
104 for (i = 0; i < key->key_len; i++)
108 /* compare two keys */
110 ip_frag_key_cmp(const struct ip_frag_key * k1, const struct ip_frag_key * k2)
113 val = k1->id ^ k2->id;
114 for (i = 0; i < k1->key_len; i++)
115 val |= k1->src_dst[i] ^ k2->src_dst[i];
120 * misc fragment functions
123 /* put fragment on death row */
125 ip_frag_free(struct ip_frag_pkt *fp, struct rte_ip_frag_death_row *dr)
130 for (i = 0; i != fp->last_idx; i++) {
131 if (fp->frags[i].mb != NULL) {
132 dr->row[k++] = fp->frags[i].mb;
133 fp->frags[i].mb = NULL;
141 /* if key is empty, mark key as in use */
143 ip_frag_inuse(struct rte_ip_frag_tbl *tbl, const struct ip_frag_pkt *fp)
145 if (ip_frag_key_is_empty(&fp->key)) {
146 TAILQ_REMOVE(&tbl->lru, fp, lru);
151 /* reset the fragment */
153 ip_frag_reset(struct ip_frag_pkt *fp, uint64_t tms)
155 static const struct ip_frag zero_frag = {
162 fp->total_size = UINT32_MAX;
164 fp->last_idx = IP_MIN_FRAG_NUM;
165 fp->frags[IP_LAST_FRAG_IDX] = zero_frag;
166 fp->frags[IP_FIRST_FRAG_IDX] = zero_frag;
169 #endif /* _IP_FRAG_COMMON_H_ */