+ /* allocate a reassembly table for TCP/IPv4 GRO */
+ struct gro_tcp4_tbl tcp_tbl;
+ struct gro_tcp4_flow tcp_flows[RTE_GRO_MAX_BURST_ITEM_NUM];
+ struct gro_tcp4_item tcp_items[RTE_GRO_MAX_BURST_ITEM_NUM] = {{0} };
+
+ /* Allocate a reassembly table for VXLAN GRO */
+ struct gro_vxlan_tcp4_tbl vxlan_tbl;
+ struct gro_vxlan_tcp4_flow vxlan_flows[RTE_GRO_MAX_BURST_ITEM_NUM];
+ struct gro_vxlan_tcp4_item vxlan_items[RTE_GRO_MAX_BURST_ITEM_NUM] = {
+ {{0}, 0, 0} };
+
+ struct rte_mbuf *unprocess_pkts[nb_pkts];
+ uint32_t item_num;
+ int32_t ret;
+ uint16_t i, unprocess_num = 0, nb_after_gro = nb_pkts;
+ uint8_t do_tcp4_gro = 0, do_vxlan_gro = 0;
+
+ if (unlikely((param->gro_types & (RTE_GRO_IPV4_VXLAN_TCP_IPV4 |
+ RTE_GRO_TCP_IPV4)) == 0))
+ return nb_pkts;
+
+ /* Get the maximum number of packets */
+ item_num = RTE_MIN(nb_pkts, (param->max_flow_num *
+ param->max_item_per_flow));
+ item_num = RTE_MIN(item_num, RTE_GRO_MAX_BURST_ITEM_NUM);
+
+ if (param->gro_types & RTE_GRO_IPV4_VXLAN_TCP_IPV4) {
+ for (i = 0; i < item_num; i++)
+ vxlan_flows[i].start_index = INVALID_ARRAY_INDEX;
+
+ vxlan_tbl.flows = vxlan_flows;
+ vxlan_tbl.items = vxlan_items;
+ vxlan_tbl.flow_num = 0;
+ vxlan_tbl.item_num = 0;
+ vxlan_tbl.max_flow_num = item_num;
+ vxlan_tbl.max_item_num = item_num;
+ do_vxlan_gro = 1;
+ }
+
+ if (param->gro_types & RTE_GRO_TCP_IPV4) {
+ for (i = 0; i < item_num; i++)
+ tcp_flows[i].start_index = INVALID_ARRAY_INDEX;
+
+ tcp_tbl.flows = tcp_flows;
+ tcp_tbl.items = tcp_items;
+ tcp_tbl.flow_num = 0;
+ tcp_tbl.item_num = 0;
+ tcp_tbl.max_flow_num = item_num;
+ tcp_tbl.max_item_num = item_num;
+ do_tcp4_gro = 1;
+ }
+
+ for (i = 0; i < nb_pkts; i++) {
+ /*
+ * The timestamp is ignored, since all packets
+ * will be flushed from the tables.
+ */
+ if (IS_IPV4_VXLAN_TCP4_PKT(pkts[i]->packet_type) &&
+ do_vxlan_gro) {
+ ret = gro_vxlan_tcp4_reassemble(pkts[i], &vxlan_tbl, 0);
+ if (ret > 0)
+ /* Merge successfully */
+ nb_after_gro--;
+ else if (ret < 0)
+ unprocess_pkts[unprocess_num++] = pkts[i];
+ } else if (IS_IPV4_TCP_PKT(pkts[i]->packet_type) &&
+ do_tcp4_gro) {
+ ret = gro_tcp4_reassemble(pkts[i], &tcp_tbl, 0);
+ if (ret > 0)
+ /* merge successfully */
+ nb_after_gro--;
+ else if (ret < 0)
+ unprocess_pkts[unprocess_num++] = pkts[i];
+ } else
+ unprocess_pkts[unprocess_num++] = pkts[i];
+ }
+
+ if (nb_after_gro < nb_pkts) {
+ i = 0;
+ /* Flush all packets from the tables */
+ if (do_vxlan_gro) {
+ i = gro_vxlan_tcp4_tbl_timeout_flush(&vxlan_tbl,
+ 0, pkts, nb_pkts);
+ }
+ if (do_tcp4_gro) {
+ i += gro_tcp4_tbl_timeout_flush(&tcp_tbl, 0,
+ &pkts[i], nb_pkts - i);
+ }
+ /* Copy unprocessed packets */
+ if (unprocess_num > 0) {
+ memcpy(&pkts[i], unprocess_pkts,
+ sizeof(struct rte_mbuf *) *
+ unprocess_num);
+ }
+ }
+
+ return nb_after_gro;