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37 #include <rte_ethdev.h>
40 #include "gso_common.h"
44 rte_gso_segment(struct rte_mbuf *pkt,
45 const struct rte_gso_ctx *gso_ctx,
46 struct rte_mbuf **pkts_out,
49 struct rte_mempool *direct_pool, *indirect_pool;
50 struct rte_mbuf *pkt_seg;
56 if (pkt == NULL || pkts_out == NULL || gso_ctx == NULL ||
58 gso_ctx->gso_size < RTE_GSO_SEG_SIZE_MIN ||
59 gso_ctx->gso_types != DEV_TX_OFFLOAD_TCP_TSO)
62 if (gso_ctx->gso_size >= pkt->pkt_len) {
63 pkt->ol_flags &= (~PKT_TX_TCP_SEG);
68 direct_pool = gso_ctx->direct_pool;
69 indirect_pool = gso_ctx->indirect_pool;
70 gso_size = gso_ctx->gso_size;
71 ipid_delta = (gso_ctx->flag != RTE_GSO_FLAG_IPID_FIXED);
72 ol_flags = pkt->ol_flags;
74 if (IS_IPV4_TCP(pkt->ol_flags)) {
75 pkt->ol_flags &= (~PKT_TX_TCP_SEG);
76 ret = gso_tcp4_segment(pkt, gso_size, ipid_delta,
77 direct_pool, indirect_pool,
78 pkts_out, nb_pkts_out);
81 RTE_LOG(DEBUG, GSO, "Unsupported packet type\n");
88 rte_mbuf_refcnt_update(pkt_seg, -1);
89 pkt_seg = pkt_seg->next;
92 /* Revert the ol_flags in the event of failure. */
93 pkt->ol_flags = ol_flags;