}
}
+/** \brief Main DPDK input node
+ @node dpdk-input
+
+ This is the main DPDK input node: across each assigned interface,
+ call rte_eth_rx_burst(...) or similar to obtain a vector of
+ packets to process. Handle early packet discard. Derive @c
+ vlib_buffer_t metadata from <code>struct rte_mbuf</code> metadata,
+ Depending on the resulting metadata: adjust <code>b->current_data,
+ b->current_length </code> and dispatch directly to
+ ip4-input-no-checksum, or ip6-input. Trace the packet if required.
+
+ @param vm vlib_main_t corresponding to the current thread
+ @param node vlib_node_runtime_t
+ @param frame vlib_frame_t input-node, not used.
+
+ @par Graph mechanics: buffer metadata, next index usage
+
+ @em Uses:
+ - <code>struct rte_mbuf mb->ol_flags</code>
+ - PKT_EXT_RX_PKT_ERROR, PKT_EXT_RX_BAD_FCS
+ PKT_RX_IP_CKSUM_BAD, PKT_RX_L4_CKSUM_BAD
+ - <code> RTE_ETH_IS_xxx_HDR(mb->packet_type) </code>
+ - packet classification result
+
+ @em Sets:
+ - <code>b->error</code> if the packet is to be dropped immediately
+ - <code>b->current_data, b->current_length</code>
+ - adjusted as needed to skip the L2 header in direct-dispatch cases
+ - <code>vnet_buffer(b)->sw_if_index[VLIB_RX]</code>
+ - rx interface sw_if_index
+ - <code>vnet_buffer(b)->sw_if_index[VLIB_TX] = ~0</code>
+ - required by ipX-lookup
+ - <code>b->flags</code>
+ - to indicate multi-segment pkts (VLIB_BUFFER_NEXT_PRESENT), etc.
+
+ <em>Next Nodes:</em>
+ - Static arcs to: error-drop, ethernet-input,
+ ip4-input-no-checksum, ip6-input, mpls-gre-input
+ - per-interface redirection, controlled by
+ <code>xd->per_interface_next_index</code>
+*/
+
static uword
dpdk_input (vlib_main_t * vm,
vlib_node_runtime_t * node,