polling core loop

udpdk/udpdk_constants.h

@@ -14,13 +14,24 @@
 #define EXCH_RING_SIZE      128
 #define EXCH_RX_RING_NAME   "UDPDK_exchange_ring_%u_RX"
 #define EXCH_TX_RING_NAME   "UDPDK_exchange_ring_%u_TX"
+#define EXCH_BUF_SIZE       32
 
 /* DPDK ports */
 #define PORT_RX     0
 #define PORT_TX     0
+#define QUEUE_RX    0
 #define NUM_RX_DESC_DEFAULT 1024
 #define NUM_TX_DESC_DEFAULT 1024
 #define PKTMBUF_POOL_NAME   "UDPDK_mbuf_pool"
 #define MBUF_CACHE_SIZE     512
 
+/* Packet poller */
+#define PKT_READ_SIZE       32
+#define PREFETCH_OFFSET     4
+#define NUM_FLOWS_DEF       0x1000
+#define NUM_FLOWS_MIN       1
+#define NUM_FLOWS_MAX       UINT16_MAX
+#define MAX_FLOW_TTL        MS_PER_S
+#define IP_FRAG_TBL_BUCKET_ENTRIES  16
+
 #endif //UDPDK_CONSTANTS_H

udpdk/udpdk_init.c

@@ -22,26 +22,11 @@
 #include "udpdk_api.h"
 #include "udpdk_constants.h"
 #include "udpdk_poller.h"
+#include "udpdk_types.h"
 
 #define RTE_LOGTYPE_INIT RTE_LOGTYPE_USER1
 
-struct exch_slot_info {
-    int active;
-    int sockfd;
-} __rte_cache_aligned;
-
-struct exch_zone_info {
-    uint64_t n_zones_active;
-    struct exch_slot_info slots[NUM_SOCKETS_MAX];
-};
-
-struct exch_zone_info *exch_zone_desc = NULL;
-
-struct exch_slot {
-    struct rte_ring *rx_q;
-    struct rte_ring *tx_q;
-    unsigned id;
-};
+static struct exch_zone_info *exch_zone_desc = NULL;
 
 struct exch_slot *exch_slots = NULL;
 
@@ -49,9 +34,6 @@ static struct rte_mempool *pktmbuf_pool;
 
 static pid_t poller_pid;
 
-// TODO move to a utility file
-enum exch_ring_func {EXCH_RING_RX, EXCH_RING_TX};
-
 /* Get the name of the rings of exchange slots */
 static inline const char * get_exch_ring_name(unsigned id, enum exch_ring_func func)
 {

udpdk/udpdk_types.h

@@ -6,6 +6,39 @@
 #ifndef UDPDK_TYPES_H
 #define UDPDK_TYPES_H
 
+#include <rte_common.h>
+#include <rte_eal.h>
+#include <rte_ethdev.h>
+#include <rte_launch.h>
+#include <rte_lcore.h>
+#include <rte_log.h>
+#include <rte_malloc.h>
+#include <rte_memory.h>
+#include <rte_memzone.h>
 
+#include <stdlib.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "udpdk_constants.h"
+
+enum exch_ring_func {EXCH_RING_RX, EXCH_RING_TX};
+
+struct exch_slot_info {
+    int active;
+    int sockfd;
+} __rte_cache_aligned;
+
+struct exch_zone_info {
+    uint64_t n_zones_active;
+    struct exch_slot_info slots[NUM_SOCKETS_MAX];
+};
+
+struct exch_slot {
+    struct rte_ring *rx_q;                      // RX queue
+    struct rte_ring *tx_q;                      // TX queue
+    struct rte_mbuf *rx_buffer[EXCH_BUF_SIZE];  // buffers storing rx packets before flushing to rt_ring
+    uint16_t rx_count;                          // current number of packets in the rx buffer
+};
 
 #endif //UDPDK_TYPES_H