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Date: Tue, 1 Jan 2019 12:12:14 +0530 From: Murali Krishna Policharla <murali.policharla@...adcom.com> To: davem@...emloft.net, amritha.nambiar@...el.com, ecree@...arflare.com, ktkhai@...tuozzo.com, alexander.h.duyck@...el.com Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, Murali Krishna Policharla <murali.policharla@...adcom.com> Subject: [PATCH] net: core: Fix to store new mtu setting in netdevice. Store newly configured mtu settings in the netdevice after mtu configuration is successful to the dsa switch. Fixes: 2315dc91a5 ("net: make dev_set_mtu() honor notification return code") Signed-off-by: Murali Krishna Policharla <murali.policharla@...adcom.com> Reviewed-by: Florian Fainelli <florian.fainelli@...adcom.com> --- net/core/dev.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/net/core/dev.c b/net/core/dev.c index 722d50d..58617aa 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -7586,12 +7586,15 @@ int dev_change_flags(struct net_device *dev, unsigned int flags) int __dev_set_mtu(struct net_device *dev, int new_mtu) { const struct net_device_ops *ops = dev->netdev_ops; + int ret = 0; if (ops->ndo_change_mtu) - return ops->ndo_change_mtu(dev, new_mtu); + ret = ops->ndo_change_mtu(dev, new_mtu); - dev->mtu = new_mtu; - return 0; + if (ret >= 0) + dev->mtu = new_mtu; + + return ret; } EXPORT_SYMBOL(__dev_set_mtu); -- 1.9.1
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