libmemif: refactor examples
- icmp_responder: responds to ICMPv4 and ARP requests
- loopback: connects two interfaces and sends a
verification packet from master memif to slave memif
where it is looped back
- loopback (reverse path): reverses direction of packet
in loopback application (slave memif to master memif)
Type: refactor
Signed-off-by: Jakub Grajciar <jgrajcia@cisco.com>
Change-Id: Ie90aaa3367269408efb6c5d538ad5aa827432238
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
diff --git a/extras/libmemif/examples/common/common.h b/extras/libmemif/examples/common/common.h
new file mode 100644
index 0000000..ce4ead2
--- /dev/null
+++ b/extras/libmemif/examples/common/common.h
@@ -0,0 +1,116 @@
+/*
+ *------------------------------------------------------------------
+ * Copyright (c) 2020 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *------------------------------------------------------------------
+ */
+
+#ifndef _COMMON_H_
+#define _COMMON_H_
+
+#include <libmemif.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/types.h>
+
+#ifdef ICMP_DBG
+#define DBG(...) \
+ do \
+ { \
+ printf (APP_NAME ":%s:%d: ", __func__, __LINE__); \
+ printf (__VA_ARGS__); \
+ printf ("\n"); \
+ } \
+ while (0)
+#else
+#define DBG(...)
+#endif
+
+#define INFO(...) \
+ do \
+ { \
+ printf ("INFO: " __VA_ARGS__); \
+ printf ("\n"); \
+ } \
+ while (0)
+
+/* maximum tx/rx memif buffers */
+#define MAX_MEMIF_BUFS 256
+
+struct memif_connection;
+
+typedef int (memif_packet_handler_t) (struct memif_connection *conn);
+
+typedef int (packet_generator_t) (struct memif_connection *c,
+ uint16_t num_pkts);
+
+typedef struct memif_connection
+{
+ uint16_t index;
+ /* memif conenction handle */
+ memif_conn_handle_t conn;
+ uint8_t is_connected;
+ /* transmit queue id */
+ uint16_t tx_qid;
+ /* tx buffers */
+ memif_buffer_t *tx_bufs;
+ /* allocated tx buffers counter */
+ /* number of tx buffers pointing to shared memory */
+ uint16_t tx_buf_num;
+ /* rx buffers */
+ memif_buffer_t *rx_bufs;
+ /* allcoated rx buffers counter */
+ /* number of rx buffers pointing to shared memory */
+ uint16_t rx_buf_num;
+ memif_packet_handler_t *packet_handler;
+ /* interface ip address */
+ uint8_t ip_addr[4];
+ /* interface hw address */
+ uint8_t hw_addr[6];
+} memif_connection_t;
+
+void print_version ();
+
+int parse_ip4 (const char *input, uint8_t out[4]);
+
+int parse_mac (const char *input, uint8_t out[6]);
+
+void alloc_memif_buffers (memif_connection_t *c);
+
+void free_memif_buffers (memif_connection_t *c);
+
+void print_memif_details (memif_connection_t *c);
+
+void print_memif_rx_ring_details (memif_connection_t *c, uint16_t qid);
+
+void print_memif_tx_ring_details (memif_connection_t *c, uint16_t qid);
+
+int send_packets (memif_connection_t *conn, uint16_t qid,
+ packet_generator_t *gen, uint32_t num_pkts,
+ uint16_t max_pkt_size);
+
+/* Expect packets smaller than 2048b */
+int responder (memif_conn_handle_t conn, void *private_ctx, uint16_t qid);
+
+/* Expect packets smaller than 2048b */
+int responder_zero_copy (memif_conn_handle_t conn, void *private_ctx,
+ uint16_t qid);
+
+/* reply with the same data */
+int basic_packet_handler (memif_connection_t *conn);
+
+/* ICMPv4 and ARP handler */
+int icmp_packet_handler (memif_connection_t *conn);
+
+#endif /* COMMON_H */
\ No newline at end of file