From: Ulrich Hecht <uli+renesas@fpond.eu>
To: linux-renesas-soc@vger.kernel.org
Cc: netdev@vger.kernel.org, davem@davemloft.net, wsa@the-dreams.de,
horms@verge.net.au, magnus.damm@gmail.com,
Ulrich Hecht <uli+renesas@fpond.eu>
Subject: [PATCH] ravb: implement MTU change while device is up
Date: Wed, 8 May 2019 17:21:22 +0200 [thread overview]
Message-ID: <1557328882-24307-1-git-send-email-uli+renesas@fpond.eu> (raw)
Uses the same method as various other drivers: shut the device down,
change the MTU, then bring it back up again.
Tested on Renesas D3 Draak board.
Signed-off-by: Ulrich Hecht <uli+renesas@fpond.eu>
---
drivers/net/ethernet/renesas/ravb_main.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index ef8f089..02c247c 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -1810,13 +1810,16 @@ static int ravb_do_ioctl(struct net_device *ndev, struct ifreq *req, int cmd)
static int ravb_change_mtu(struct net_device *ndev, int new_mtu)
{
- if (netif_running(ndev))
- return -EBUSY;
+ if (!netif_running(ndev)) {
+ ndev->mtu = new_mtu;
+ netdev_update_features(ndev);
+ return 0;
+ }
+ ravb_close(ndev);
ndev->mtu = new_mtu;
- netdev_update_features(ndev);
- return 0;
+ return ravb_open(ndev);
}
static void ravb_set_rx_csum(struct net_device *ndev, bool enable)
--
2.7.4
next reply other threads:[~2019-05-08 15:21 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-08 15:21 Ulrich Hecht [this message]
2019-05-08 15:59 ` [PATCH] ravb: implement MTU change while device is up Sergei Shtylyov
2019-05-08 16:52 ` Niklas Söderlund
2019-05-09 6:57 ` Ulrich Hecht
2019-05-09 10:10 ` Simon Horman
2019-05-09 15:32 ` Ulrich Hecht
2019-05-13 12:18 ` Simon Horman
2019-05-20 12:09 ` Wolfram Sang
2019-05-22 11:59 ` Simon Horman
2019-05-23 1:02 ` Ulrich Hecht
2019-05-08 16:50 ` Niklas Söderlund
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