From: Gaetan Rivet <gaetan.rivet@6wind.com>
Date: Tue, 18 Apr 2017 12:17:41 +0000 (+0200)
Subject: app/testpmd: request link status interrupt
X-Git-Tag: spdx-start~3435
X-Git-Url: http://git.droids-corp.org/?p=dpdk.git;a=commitdiff_plain;h=8ea656f8c300175ac84f3cbe1117f5ef11ffc4eb

app/testpmd: request link status interrupt

For drivers supporting the LSC event, enable it.
This allows to test LSC event support.

Add the --no-lsc-interrupt parameter to explicitly disable the link status
change interrupt.

Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
---

diff --git a/app/test-pmd/parameters.c b/app/test-pmd/parameters.c
index 2852fa2399..e3499cd400 100644
--- a/app/test-pmd/parameters.c
+++ b/app/test-pmd/parameters.c
@@ -200,6 +200,7 @@ usage(char* progname)
 		" or total packet length.\n");
 	printf("  --disable-link-check: disable check on link status when "
 	       "starting/stopping ports.\n");
+	printf("  --no-lsc-interrupt: disable link status change interrupt.\n");
 }
 
 #ifdef RTE_LIBRTE_CMDLINE
@@ -568,6 +569,7 @@ launch_args_parse(int argc, char** argv)
 		{ "no-flush-rx",	0, 0, 0 },
 		{ "txpkts",			1, 0, 0 },
 		{ "disable-link-check",		0, 0, 0 },
+		{ "no-lsc-interrupt",		0, 0, 0 },
 		{ 0, 0, 0, 0 },
 	};
 
@@ -998,6 +1000,8 @@ launch_args_parse(int argc, char** argv)
 				no_flush_rx = 1;
 			if (!strcmp(lgopts[opt_idx].name, "disable-link-check"))
 				no_link_check = 1;
+			if (!strcmp(lgopts[opt_idx].name, "no-lsc-interrupt"))
+				lsc_interrupt = 0;
 
 			break;
 		case 'h':
diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index 28d9b26da0..f1325ce9ae 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -270,6 +270,11 @@ uint8_t no_flush_rx = 0; /* flush by default */
  */
 uint8_t no_link_check = 0; /* check by default */
 
+/*
+ * Enable link status change notification
+ */
+uint8_t lsc_interrupt = 1; /* enabled by default */
+
 /*
  * NIC bypass mode configuration options.
  */
@@ -1746,6 +1751,9 @@ check_all_ports_link_status(uint32_t port_mask)
 		if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 			print_flag = 1;
 		}
+
+		if (lsc_interrupt)
+			break;
 	}
 }
 
@@ -1929,6 +1937,11 @@ init_port_config(void)
 #ifdef RTE_NIC_BYPASS
 		rte_eth_dev_bypass_init(pid);
 #endif
+
+		if (lsc_interrupt &&
+		    (rte_eth_devices[pid].data->dev_flags &
+		     RTE_ETH_DEV_INTR_LSC))
+			port->dev_conf.intr_conf.lsc = 1;
 	}
 }
 
diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h
index 642796ec8a..62f89e6bc3 100644
--- a/app/test-pmd/testpmd.h
+++ b/app/test-pmd/testpmd.h
@@ -305,6 +305,7 @@ extern uint8_t no_flush_rx; /**<set by "--no-flush-rx" parameter */
 extern uint8_t  mp_anon; /**< set by "--mp-anon" parameter */
 extern uint8_t no_link_check; /**<set by "--disable-link-check" parameter */
 extern volatile int test_done; /* stop packet forwarding when set to 1. */
+extern uint8_t lsc_interrupt; /**< disabled by "--no-lsc-interrupt" parameter */
 
 #ifdef RTE_NIC_BYPASS
 extern uint32_t bypass_timeout; /**< Store the NIC bypass watchdog timeout */