From mboxrd@z Thu Jan 1 00:00:00 1970 From: Robert Dobrowolski Subject: [PATCH v1] net: cdc_ncm: update datagram size after changing mtu Date: Wed, 6 Apr 2016 13:41:09 +0200 Message-ID: <1459942869-13587-1-git-send-email-robert.dobrowolski@linux.intel.com> Cc: robert.dobrowolski@linux.intel.com, rafal.f.redzimski@intel.com, stable@vger.kernel.org, oliver@neukum.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org To: linux-usb@vger.kernel.org Return-path: Sender: stable-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: Rafal Redzimski Current implementation updates the mtu size and notify cdc_ncm device using USB_CDC_SET_MAX_DATAGRAM_SIZE request about datagram size change instead of changing rx_urb_size. Whenever mtu is being changed, datagram size should also be updated. Cc: Signed-off-by: Rafal Redzimski Signed-off-by: Robert Dobrowolski --- drivers/net/usb/cdc_ncm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c index 2fb31ed..4a47656 100644 --- a/drivers/net/usb/cdc_ncm.c +++ b/drivers/net/usb/cdc_ncm.c @@ -746,6 +746,8 @@ int cdc_ncm_change_mtu(struct net_device *net, int new_mtu) if (new_mtu <= 0 || new_mtu > maxmtu) return -EINVAL; net->mtu = new_mtu; + cdc_ncm_set_dgram_size(dev, new_mtu); + return 0; } EXPORT_SYMBOL_GPL(cdc_ncm_change_mtu); -- 1.9.1