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37 #include <rte_ethdev.h>
40 #include "gso_common.h"
42 #include "gso_tunnel_tcp4.h"
45 rte_gso_segment(struct rte_mbuf *pkt,
46 const struct rte_gso_ctx *gso_ctx,
47 struct rte_mbuf **pkts_out,
50 struct rte_mempool *direct_pool, *indirect_pool;
51 struct rte_mbuf *pkt_seg;
57 if (pkt == NULL || pkts_out == NULL || gso_ctx == NULL ||
59 gso_ctx->gso_size < RTE_GSO_SEG_SIZE_MIN ||
60 ((gso_ctx->gso_types & (DEV_TX_OFFLOAD_TCP_TSO |
61 DEV_TX_OFFLOAD_VXLAN_TNL_TSO)) == 0))
64 if (gso_ctx->gso_size >= pkt->pkt_len) {
65 pkt->ol_flags &= (~PKT_TX_TCP_SEG);
70 direct_pool = gso_ctx->direct_pool;
71 indirect_pool = gso_ctx->indirect_pool;
72 gso_size = gso_ctx->gso_size;
73 ipid_delta = (gso_ctx->flag != RTE_GSO_FLAG_IPID_FIXED);
74 ol_flags = pkt->ol_flags;
76 if (IS_IPV4_VXLAN_TCP4(pkt->ol_flags)
77 && (gso_ctx->gso_types & DEV_TX_OFFLOAD_VXLAN_TNL_TSO)) {
78 pkt->ol_flags &= (~PKT_TX_TCP_SEG);
79 ret = gso_tunnel_tcp4_segment(pkt, gso_size, ipid_delta,
80 direct_pool, indirect_pool,
81 pkts_out, nb_pkts_out);
82 } else if (IS_IPV4_TCP(pkt->ol_flags) &&
83 (gso_ctx->gso_types & DEV_TX_OFFLOAD_TCP_TSO)) {
84 pkt->ol_flags &= (~PKT_TX_TCP_SEG);
85 ret = gso_tcp4_segment(pkt, gso_size, ipid_delta,
86 direct_pool, indirect_pool,
87 pkts_out, nb_pkts_out);
89 /* unsupported packet, skip */
91 RTE_LOG(DEBUG, GSO, "Unsupported packet type\n");
98 rte_mbuf_refcnt_update(pkt_seg, -1);
99 pkt_seg = pkt_seg->next;
101 } else if (ret < 0) {
102 /* Revert the ol_flags in the event of failure. */
103 pkt->ol_flags = ol_flags;