leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
1dfddff5fc
linux/drivers/net/usb
History
Bjørn Mork 1dfddff5fc net: cdc_ncm: avoid changing RX/TX buffers on MTU changes 
NCM buffer sizes are negotiated with the device independently of
the network device MTU.  The RX buffers are allocated by the
usbnet framework based on the rx_urb_size value set by cdc_ncm. A
single RX buffer can hold a number of MTU sized packets.

The default usbnet change_mtu ndo only modifies rx_urb_size if it
is equal to hard_mtu.  And the cdc_ncm driver will set rx_urb_size
and hard_mtu independently of each other, based on dwNtbInMaxSize
and dwNtbOutMaxSize respectively. It was therefore assumed that
usbnet_change_mtu() would never touch rx_urb_size.  This failed to
consider the case where dwNtbInMaxSize and dwNtbOutMaxSize happens
to be equal.

Fix by implementing an NCM specific change_mtu ndo, modifying the
netdev MTU without touching the buffer size settings.

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-12-23 22:52:08 -05:00
..
asix_common.c drivers/net: get rid of unnecessary initializations in .get_drvinfo() 2015-10-16 00:24:10 -07:00
asix_devices.c net: asix: add support for the Billionton GUSB2AM-1G-B USB adapter 2015-10-18 19:36:04 -07:00
asix.h asix: Rename remaining and size for clarity 2015-10-05 06:58:38 -07:00
ax88172a.c usb: Fix FSF address in file headers 2013-12-06 12:37:55 -05:00
ax88179_178a.c ax88179_178a: fix bonding failure 2014-10-20 00:53:30 -04:00
catc.c net: usb: Use eth_<foo>_addr instead of memset 2015-03-03 17:01:36 -05:00
cdc_eem.c drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
cdc_ether.c net: usb: cdc_ether: add Dell DW5580 as a mobile broadband adapter 2015-11-16 14:58:39 -05:00
cdc_mbim.c net: cdc_ncm: avoid changing RX/TX buffers on MTU changes 2015-12-23 22:52:08 -05:00
cdc_ncm.c net: cdc_ncm: avoid changing RX/TX buffers on MTU changes 2015-12-23 22:52:08 -05:00
cdc_subset.c cdc_subset: deal with a device that needs reset for timeout 2014-08-02 15:44:18 -07:00
cdc-phonet.c cdc-phonet: use common parser 2015-09-15 12:43:49 -07:00
ch9200.c ch9200: Convert to use module_usb_driver 2015-09-22 17:34:57 -07:00
cx82310_eth.c cx82310_eth: fix semicolon.cocci warnings 2015-03-24 14:56:02 -04:00
dm9601.c drivers/net: get rid of unnecessary initializations in .get_drvinfo() 2015-10-16 00:24:10 -07:00
gl620a.c usbnet: remove generic hard_header_len check 2014-02-17 14:35:46 -05:00
hso.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-03-03 21:16:48 -05:00
huawei_cdc_ncm.c cdc_ncm: Add support for moving NDP to end of NCM frame 2015-07-09 14:58:31 -07:00
int51x1.c usb: Fix FSF address in file headers 2013-12-06 12:37:55 -05:00
ipheth.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-06-03 23:32:12 -07:00
kalmia.c drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00
kaweth.c kaweth: remove ifdefed out call to dma_supported 2015-11-10 16:32:11 -08:00
Kconfig Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-10-20 06:08:27 -07:00
lan78xx.c lan78xx: Return 0 when lan78xx_suspend() has no error. 2015-09-28 22:28:53 -07:00
lan78xx.h lan78xx: Remove not defined MAC_CR_GMII_EN_ bit from MAC_CR. 2015-09-17 22:15:37 -07:00
lg-vl600.c net: usb: Use eth_<foo>_addr instead of memset 2015-03-03 17:01:36 -05:00
Makefile usbnet: New driver for QinHeng CH9200 devices 2015-09-21 16:16:16 -07:00
mcs7830.c drivers/net: get rid of unnecessary initializations in .get_drvinfo() 2015-10-16 00:24:10 -07:00
net1080.c usbnet: remove generic hard_header_len check 2014-02-17 14:35:46 -05:00
pegasus.c net: get rid of SET_ETHTOOL_OPS 2014-05-13 17:43:20 -04:00
pegasus.h
plusb.c usb: plusb: Add support for National Instruments host-to-host cable 2015-02-20 15:12:48 -05:00
qmi_wwan.c net: qmi_wwan: add XS Stick W100-2 from 4G Systems 2015-11-18 23:01:32 -05:00
r8152.c r8152: fix lockup when runtime PM is enabled 2015-12-08 22:48:01 -05:00
rndis_host.c usbnet: remove generic hard_header_len check 2014-02-17 14:35:46 -05:00
rtl8150.c usbnet: rtl8150: remove unused variable 2014-11-19 15:17:11 -05:00
sierra_net.c usb: Fix FSF address in file headers 2013-12-06 12:37:55 -05:00
smsc75xx.c usbnet: remove invalid check 2015-09-22 16:14:32 -07:00
smsc75xx.h usb: Fix FSF address in file headers 2013-12-06 12:37:55 -05:00
smsc95xx.c usbnet: remove invalid check 2015-09-22 16:14:32 -07:00
smsc95xx.h usb: Fix FSF address in file headers 2013-12-06 12:37:55 -05:00
sr9700.c net: usb: sr9700: Use 'SR_' prefix for the common register macros 2015-02-04 13:53:02 -08:00
sr9700.h net: usb: sr9700: Use 'SR_' prefix for the common register macros 2015-02-04 13:53:02 -08:00
sr9800.c drivers/net: get rid of unnecessary initializations in .get_drvinfo() 2015-10-16 00:24:10 -07:00
sr9800.h USB2NET : SR9800 : One chip USB2.0 USB2NET SR9800 Device Driver Support 2014-02-10 16:53:06 -08:00
usbnet.c usbnet: remove ifdefed out call to dma_supported 2015-11-10 16:32:11 -08:00
zaurus.c drivers/net: delete non-required instances of include <linux/init.h> 2014-01-16 11:53:26 -08:00