netdev - [PATCH net-next 1/3] nfp: flower: obtain repr link state only from firmware

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Message-Id: <20180103031901.4165-2-jakub.kicinski@netronome.com>
Date:   Tue,  2 Jan 2018 19:18:59 -0800
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     netdev@...r.kernel.org
Cc:     oss-drivers@...ronome.com,
        Dirk van der Merwe <dirk.vandermerwe@...ronome.com>
Subject: [PATCH net-next 1/3] nfp: flower: obtain repr link state only from firmware

From: Dirk van der Merwe <dirk.vandermerwe@...ronome.com>

Instead of starting up reprs assuming that there is link, only respond
to the link state reported by firmware.

Furthermore, ensure link is down after repr netdevs are created.

Signed-off-by: Dirk van der Merwe <dirk.vandermerwe@...ronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
---
 drivers/net/ethernet/netronome/nfp/flower/main.c  | 2 --
 drivers/net/ethernet/netronome/nfp/nfp_net_repr.c | 2 ++
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/netronome/nfp/flower/main.c b/drivers/net/ethernet/netronome/nfp/flower/main.c
index 63160e9754d4..252d19236ad8 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/main.c
+++ b/drivers/net/ethernet/netronome/nfp/flower/main.c
@@ -110,7 +110,6 @@ nfp_flower_repr_netdev_open(struct nfp_app *app, struct nfp_repr *repr)
 	if (err)
 		return err;
 
-	netif_carrier_on(repr->netdev);
 	netif_tx_wake_all_queues(repr->netdev);
 
 	return 0;
@@ -119,7 +118,6 @@ nfp_flower_repr_netdev_open(struct nfp_app *app, struct nfp_repr *repr)
 static int
 nfp_flower_repr_netdev_stop(struct nfp_app *app, struct nfp_repr *repr)
 {
-	netif_carrier_off(repr->netdev);
 	netif_tx_disable(repr->netdev);
 
 	return nfp_flower_cmsg_portmod(repr, false);
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c b/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c
index 78b36c67c232..3c6cb381385d 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c
@@ -336,6 +336,8 @@ struct net_device *nfp_repr_alloc(struct nfp_app *app)
 	if (!netdev)
 		return NULL;
 
+	netif_carrier_off(netdev);
+
 	repr = netdev_priv(netdev);
 	repr->netdev = netdev;
 	repr->app = app;
-- 
2.15.1