[PATCH v1] net: cdc_ncm: update datagram size after changing mtu
From: Robert Dobrowolski <hidden>
Date: 2016-04-06 11:44:14
Also in:
lkml, stable
Subsystem:
networking drivers, the rest, usb cdc ethernet driver, usb networking drivers · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, Oliver Neukum
From: Rafal Redzimski <redacted> 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: <redacted> Signed-off-by: Rafal Redzimski <redacted> Signed-off-by: Robert Dobrowolski <redacted> --- 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