1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2018 Intel Corporation
10 * Contains miscellaneous functions/structures/macros used internally
15 * Move bad (unprocessed) mbufs beyond the good (processed) ones.
16 * bad_idx[] contains the indexes of bad mbufs inside the mb[].
19 move_bad_mbufs(struct rte_mbuf *mb[], const uint32_t bad_idx[], uint32_t nb_mb,
23 struct rte_mbuf *drb[nb_bad];
28 /* copy bad ones into a temp place */
29 for (i = 0; i != nb_mb; i++) {
30 if (j != nb_bad && i == bad_idx[j])
36 /* copy bad ones after the good ones */
37 for (i = 0; i != nb_bad; i++)
42 * Find packet's segment for the specified offset.
43 * ofs - at input should contain required offset, at output would contain
44 * offset value within the segment.
46 static inline struct rte_mbuf *
47 mbuf_get_seg_ofs(struct rte_mbuf *mb, uint32_t *ofs)
56 ms = rte_pktmbuf_lastseg(mb);
57 n = n + rte_pktmbuf_data_len(ms) - plen;
60 for (k = rte_pktmbuf_data_len(ms); n >= k;
61 k = rte_pktmbuf_data_len(ms)) {
72 * Trim multi-segment packet at the specified offset, and free
73 * all unused segments.
75 * ms - segment where to cut
76 * ofs - offset within the *ms*
77 * len - length to cut (from given offset to the end of the packet)
78 * Can be used in conjunction with mbuf_get_seg_ofs():
80 * ms = mbuf_get_seg_ofs(mb, &ofs);
81 * mbuf_cut_seg_ofs(mb, ms, ofs, mb->pkt_len - new_len);
84 mbuf_cut_seg_ofs(struct rte_mbuf *mb, struct rte_mbuf *ms, uint32_t ofs,
93 /* tail spawns through multiple segments */
94 if (slen < ofs + len) {
97 for (n = 0; mn != NULL; n++) {
99 rte_pktmbuf_free_seg(mn);
108 #endif /* _MISC_H_ */