[RFC 4/6] dumpcap: handle pdump requests from primary

[Stephen Hemminger <stephen@networkplumber.org>]

The primary process will start to notify all secondary processes
about pdump changes. The dumpcap secondary process can just call
rte_pdump_init() and it take care of that.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 app/dumpcap/main.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/app/dumpcap/main.c b/app/dumpcap/main.c
index 7b19c830b5..c734fc7b9d 100644
--- a/app/dumpcap/main.c
+++ b/app/dumpcap/main.c
@@ -528,6 +528,8 @@ cleanup_pdump_resources(void)
 		if (intf->opts.promisc_mode)
 			rte_eth_promiscuous_disable(intf->port);
 	}
+
+	rte_pdump_uninit();
 }
 
 /* Alarm signal handler, used to check that primary process */
@@ -659,6 +661,14 @@ static void dpdk_init(void)
 	if (rte_eal_init(eal_argc, eal_argv) < 0)
 		rte_exit(EXIT_FAILURE, "EAL init failed: is primary process running?\n");
 
+	/*
+	 * Register pdump callback handler.
+	 * Primary will notify all secondary processes of change.
+	 * No impact for this application, but need to reply.
+	 */
+	if (rte_pdump_init() < 0)
+		rte_exit(EXIT_FAILURE, "EAL pdump init failed\n");
+
 	/*
 	 * If no lcore argument was specified, then run this program as a normal process
 	 * which can be scheduled on any non-isolated CPU.
-- 
2.47.2