doc: link examples to API

Enable Doxygen parsing of DPDK example files so that the example
code is linked to and from the API docs. This allows the reader
to see examples of API usage in context by following a link.

Signed-off-by: John McNamara <john.mcnamara@intel.com>

doc/api/doxy-api.conf

@@ -30,6 +30,7 @@
 
 PROJECT_NAME            = DPDK
 INPUT                   = doc/api/doxy-api-index.md \
+                          doc/api/examples.dox \
                           drivers/net/bonding \
                           lib/librte_eal/common/include \
                           lib/librte_eal/common/include/generic \
@@ -84,3 +85,7 @@ HTML_DYNAMIC_SECTIONS   = YES
 SEARCHENGINE            = NO
 SORT_MEMBER_DOCS        = NO
 SOURCE_BROWSER          = YES
+
+EXAMPLE_PATH            = examples
+EXAMPLE_PATTERNS        = *.c
+EXAMPLE_RECURSIVE       = YES

doc/api/examples.dox

@@ -0,0 +1,113 @@
+/**
+@page examples DPDK Example Programs
+
+@example bond/main.c
+@example cmdline/commands.c
+@example cmdline/main.c
+@example cmdline/parse_obj_list.c
+@example distributor/main.c
+@example dpdk_qat/crypto.c
+@example dpdk_qat/main.c
+@example ethtool/ethtool-app/ethapp.c
+@example ethtool/ethtool-app/main.c
+@example ethtool/lib/rte_ethtool.c
+@example exception_path/main.c
+@example helloworld/main.c
+@example ip_fragmentation/main.c
+@example ip_pipeline/config_check.c
+@example ip_pipeline/config_parse.c
+@example ip_pipeline/config_parse_tm.c
+@example ip_pipeline/cpu_core_map.c
+@example ip_pipeline/init.c
+@example ip_pipeline/main.c
+@example ip_pipeline/pipeline/pipeline_common_be.c
+@example ip_pipeline/pipeline/pipeline_common_fe.c
+@example ip_pipeline/pipeline/pipeline_firewall_be.c
+@example ip_pipeline/pipeline/pipeline_firewall.c
+@example ip_pipeline/pipeline/pipeline_flow_actions_be.c
+@example ip_pipeline/pipeline/pipeline_flow_actions.c
+@example ip_pipeline/pipeline/pipeline_flow_classification_be.c
+@example ip_pipeline/pipeline/pipeline_flow_classification.c
+@example ip_pipeline/pipeline/pipeline_master_be.c
+@example ip_pipeline/pipeline/pipeline_master.c
+@example ip_pipeline/pipeline/pipeline_passthrough_be.c
+@example ip_pipeline/pipeline/pipeline_passthrough.c
+@example ip_pipeline/pipeline/pipeline_routing_be.c
+@example ip_pipeline/pipeline/pipeline_routing.c
+@example ip_pipeline/thread.c
+@example ip_pipeline/thread_fe.c
+@example ip_reassembly/main.c
+@example ipv4_multicast/main.c
+@example kni/main.c
+@example l2fwd-crypto/main.c
+@example l2fwd-ivshmem/guest/guest.c
+@example l2fwd-ivshmem/host/host.c
+@example l2fwd-jobstats/main.c
+@example l2fwd-keepalive/main.c
+@example l2fwd/main.c
+@example l3fwd-acl/main.c
+@example l3fwd/main.c
+@example l3fwd-power/main.c
+@example l3fwd-vf/main.c
+@example link_status_interrupt/main.c
+@example load_balancer/config.c
+@example load_balancer/init.c
+@example load_balancer/main.c
+@example load_balancer/runtime.c
+@example multi_process/client_server_mp/mp_client/client.c
+@example multi_process/client_server_mp/mp_server/args.c
+@example multi_process/client_server_mp/mp_server/init.c
+@example multi_process/client_server_mp/mp_server/main.c
+@example multi_process/l2fwd_fork/flib.c
+@example multi_process/l2fwd_fork/main.c
+@example multi_process/simple_mp/main.c
+@example multi_process/simple_mp/mp_commands.c
+@example multi_process/symmetric_mp/main.c
+@example netmap_compat/bridge/bridge.c
+@example netmap_compat/lib/compat_netmap.c
+@example packet_ordering/main.c
+@example performance-thread/common/arch/x86/ctx.c
+@example performance-thread/common/lthread.c
+@example performance-thread/common/lthread_cond.c
+@example performance-thread/common/lthread_diag.c
+@example performance-thread/common/lthread_mutex.c
+@example performance-thread/common/lthread_sched.c
+@example performance-thread/common/lthread_tls.c
+@example performance-thread/l3fwd-thread/main.c
+@example performance-thread/pthread_shim/main.c
+@example performance-thread/pthread_shim/pthread_shim.c
+@example ptpclient/ptpclient.c
+@example qos_meter/main.c
+@example qos_meter/rte_policer.c
+@example qos_sched/app_thread.c
+@example qos_sched/args.c
+@example qos_sched/cfg_file.c
+@example qos_sched/cmdline.c
+@example qos_sched/init.c
+@example qos_sched/main.c
+@example qos_sched/stats.c
+@example quota_watermark/qw/args.c
+@example quota_watermark/qwctl/commands.c
+@example quota_watermark/qwctl/qwctl.c
+@example quota_watermark/qw/init.c
+@example quota_watermark/qw/main.c
+@example rxtx_callbacks/main.c
+@example skeleton/basicfwd.c
+@example tep_termination/main.c
+@example tep_termination/vxlan.c
+@example tep_termination/vxlan_setup.c
+@example timer/main.c
+@example vhost/main.c
+@example vhost_xen/main.c
+@example vhost_xen/vhost_monitor.c
+@example vhost_xen/xenstore_parse.c
+@example vmdq_dcb/main.c
+@example vmdq/main.c
+@example vm_power_manager/channel_manager.c
+@example vm_power_manager/channel_monitor.c
+@example vm_power_manager/guest_cli/main.c
+@example vm_power_manager/guest_cli/vm_power_cli_guest.c
+@example vm_power_manager/main.c
+@example vm_power_manager/power_manager.c
+@example vm_power_manager/vm_power_cli.c
+*/