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nfp: process MTU updates from firmware flower app 

Now that control message processing occurs in a workqueue rather than a BH
handler MTU updates received from the firmware may be safely processed.

Signed-off-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Simon Horman 2017-08-16 09:37:44 +02:00 committed by David S. Miller
parent b985f870a5
commit 2dff196224
1 changed files with 9 additions and 2 deletions
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11
drivers/net/ethernet/netronome/nfp/flower/cmsg.c
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@ -150,10 +150,17 @@ nfp_flower_cmsg_portmod_rx(struct nfp_app *app, struct sk_buff *skb)
return; return;
} }
if (link) if (link) {
u16 mtu = be16_to_cpu(msg->mtu);
netif_carrier_on(netdev); netif_carrier_on(netdev);
else
/* An MTU of 0 from the firmware should be ignored */
if (mtu)
dev_set_mtu(netdev, mtu);
} else {
netif_carrier_off(netdev); netif_carrier_off(netdev);
}
rcu_read_unlock(); rcu_read_unlock();
} }