#include <errno.h>
+#include <rte_log.h>
+#include <rte_ethdev.h>
+
#include "rte_gso.h"
+#include "gso_common.h"
+#include "gso_tcp4.h"
+#include "gso_tunnel_tcp4.h"
int
rte_gso_segment(struct rte_mbuf *pkt,
struct rte_mbuf **pkts_out,
uint16_t nb_pkts_out)
{
+ struct rte_mempool *direct_pool, *indirect_pool;
+ struct rte_mbuf *pkt_seg;
+ uint64_t ol_flags;
+ uint16_t gso_size;
+ uint8_t ipid_delta;
+ int ret = 1;
+
if (pkt == NULL || pkts_out == NULL || gso_ctx == NULL ||
- nb_pkts_out < 1)
+ nb_pkts_out < 1 ||
+ gso_ctx->gso_size < RTE_GSO_SEG_SIZE_MIN ||
+ ((gso_ctx->gso_types & (DEV_TX_OFFLOAD_TCP_TSO |
+ DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
+ DEV_TX_OFFLOAD_GRE_TNL_TSO)) == 0))
return -EINVAL;
- pkt->ol_flags &= (~PKT_TX_TCP_SEG);
- pkts_out[0] = pkt;
+ if (gso_ctx->gso_size >= pkt->pkt_len) {
+ pkt->ol_flags &= (~PKT_TX_TCP_SEG);
+ pkts_out[0] = pkt;
+ return 1;
+ }
+
+ direct_pool = gso_ctx->direct_pool;
+ indirect_pool = gso_ctx->indirect_pool;
+ gso_size = gso_ctx->gso_size;
+ ipid_delta = (gso_ctx->flag != RTE_GSO_FLAG_IPID_FIXED);
+ ol_flags = pkt->ol_flags;
+
+ if ((IS_IPV4_VXLAN_TCP4(pkt->ol_flags) &&
+ (gso_ctx->gso_types & DEV_TX_OFFLOAD_VXLAN_TNL_TSO)) ||
+ ((IS_IPV4_GRE_TCP4(pkt->ol_flags) &&
+ (gso_ctx->gso_types & DEV_TX_OFFLOAD_GRE_TNL_TSO)))) {
+ pkt->ol_flags &= (~PKT_TX_TCP_SEG);
+ ret = gso_tunnel_tcp4_segment(pkt, gso_size, ipid_delta,
+ direct_pool, indirect_pool,
+ pkts_out, nb_pkts_out);
+ } else if (IS_IPV4_TCP(pkt->ol_flags) &&
+ (gso_ctx->gso_types & DEV_TX_OFFLOAD_TCP_TSO)) {
+ pkt->ol_flags &= (~PKT_TX_TCP_SEG);
+ ret = gso_tcp4_segment(pkt, gso_size, ipid_delta,
+ direct_pool, indirect_pool,
+ pkts_out, nb_pkts_out);
+ } else {
+ /* unsupported packet, skip */
+ pkts_out[0] = pkt;
+ RTE_LOG(DEBUG, GSO, "Unsupported packet type\n");
+ return 1;
+ }
+
+ if (ret > 1) {
+ pkt_seg = pkt;
+ while (pkt_seg) {
+ rte_mbuf_refcnt_update(pkt_seg, -1);
+ pkt_seg = pkt_seg->next;
+ }
+ } else if (ret < 0) {
+ /* Revert the ol_flags in the event of failure. */
+ pkt->ol_flags = ol_flags;
+ }
- return 1;
+ return ret;
}