From: Andrew Rybchenko <arybchenko@solarflare.com>
Date: Thu, 12 Jan 2017 09:03:22 +0000 (+0000)
Subject: net/sfc: fix link status when port is not started
X-Git-Tag: spdx-start~4627
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=9b098c525beb17869afc4952fe9ac403ef3b46c7;p=dpdk.git

net/sfc: fix link status when port is not started

Fixes: 886f8d8a05bf ("net/sfc: retrieve link info")

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Andrew Lee <alee@solarflare.com>
---

diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
index d13b6d69e5..3ad9adafb6 100644
--- a/drivers/net/sfc/sfc_ethdev.c
+++ b/drivers/net/sfc/sfc_ethdev.c
@@ -188,14 +188,17 @@ sfc_dev_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 
 	sfc_log_init(sa, "entry");
 
-	if (sa->state != SFC_ADAPTER_STARTED)
-		return 0;
-
 retry:
 	EFX_STATIC_ASSERT(sizeof(*dev_link) == sizeof(rte_atomic64_t));
 	*(int64_t *)&old_link = rte_atomic64_read((rte_atomic64_t *)dev_link);
 
-	if (wait_to_complete) {
+	if (sa->state != SFC_ADAPTER_STARTED) {
+		sfc_port_link_mode_to_info(EFX_LINK_UNKNOWN, &current_link);
+		if (!rte_atomic64_cmpset((volatile uint64_t *)dev_link,
+					 *(uint64_t *)&old_link,
+					 *(uint64_t *)&current_link))
+			goto retry;
+	} else if (wait_to_complete) {
 		efx_link_mode_t link_mode;
 
 		if (efx_port_poll(sa->nic, &link_mode) != 0)