linux.git/drivers/net, branch v4.19-rc7

net: mvpp2: Extract the correct ethtype from the skb for tx csum offload

2018-10-05T21:52:43+00:00

When offloading the L3 and L4 csum computation on TX, we need to extract
the l3_proto from the ethtype, independently of the presence of a vlan
tag.

The actual driver uses skb->protocol as-is, resulting in packets with
the wrong L4 checksum being sent when there's a vlan tag in the packet
header and checksum offloading is enabled.

This commit makes use of vlan_protocol_get() to get the correct ethtype
regardless the presence of a vlan tag.

Fixes: 3f518509dedc ("ethernet: Add new driver for Marvell Armada 375 network unit")
Signed-off-by: Maxime Chevallier 
Signed-off-by: David S. Miller

yam: fix a missing-check bug

2018-10-05T18:54:55+00:00

In yam_ioctl(), the concrete ioctl command is firstly copied from the
user-space buffer 'ifr->ifr_data' to 'ioctl_cmd' and checked through the
following switch statement. If the command is not as expected, an error
code EINVAL is returned. In the following execution the buffer
'ifr->ifr_data' is copied again in the cases of the switch statement to
specific data structures according to what kind of ioctl command is
requested. However, after the second copy, no re-check is enforced on the
newly-copied command. Given that the buffer 'ifr->ifr_data' is in the user
space, a malicious user can race to change the command between the two
copies. This way, the attacker can inject inconsistent data and cause
undefined behavior.

This patch adds a re-check in each case of the switch statement if there is
a second copy in that case, to re-check whether the command obtained in the
second copy is the same as the one in the first copy. If not, an error code
EINVAL will be returned.

Signed-off-by: Wenwen Wang 
Signed-off-by: David S. Miller

net: cxgb3_main: fix a missing-check bug

2018-10-05T18:47:19+00:00

In cxgb_extension_ioctl(), the command of the ioctl is firstly copied from
the user-space buffer 'useraddr' to 'cmd' and checked through the
switch statement. If the command is not as expected, an error code
EOPNOTSUPP is returned. In the following execution, i.e., the cases of the
switch statement, the whole buffer of 'useraddr' is copied again to a
specific data structure, according to what kind of command is requested.
However, after the second copy, there is no re-check on the newly-copied
command. Given that the buffer 'useraddr' is in the user space, a malicious
user can race to change the command between the two copies. By doing so,
the attacker can supply malicious data to the kernel and cause undefined
behavior.

This patch adds a re-check in each case of the switch statement if there is
a second copy in that case, to re-check whether the command obtained in the
second copy is the same as the one in the first copy. If not, an error code
EINVAL is returned.

Signed-off-by: Wenwen Wang 
Signed-off-by: David S. Miller

net: phy: phylink: fix SFP interface autodetection

2018-10-05T08:04:12+00:00

When connecting SFP PHY to phylink use the detected interface.
Otherwise, the link fails to come up when the configured 'phy-mode'
differs from the SFP detected mode.

Move most of phylink_connect_phy() into __phylink_connect_phy(), and
leave phylink_connect_phy() as a wrapper. phylink_sfp_connect_phy() can
now pass the SFP detected PHY interface to __phylink_connect_phy().

This fixes 1GB SFP module link up on eth3 of the Macchiatobin board that
is configured in the DT to "2500base-x" phy-mode.

Fixes: 9525ae83959b6 ("phylink: add phylink infrastructure")
Suggested-by: Russell King 
Signed-off-by: Baruch Siach 
Signed-off-by: David S. Miller

be2net: don't flip hw_features when VXLANs are added/deleted

2018-10-05T07:59:21+00:00

the be2net implementation of .ndo_tunnel_{add,del}() changes the value of
NETIF_F_GSO_UDP_TUNNEL bit in 'features' and 'hw_features', but it forgets
to call netdev_features_change(). Moreover, ethtool setting for that bit
can potentially be reverted after a tunnel is added or removed.

GSO already does software segmentation when 'hw_enc_features' is 0, even
if VXLAN offload is turned on. In addition, commit 096de2f83ebc ("benet:
stricter vxlan offloading check in be_features_check") avoids hardware
segmentation of non-VXLAN tunneled packets, or VXLAN packets having wrong
destination port. So, it's safe to avoid flipping the above feature on
addition/deletion of VXLAN tunnels.

Fixes: 630f4b70567f ("be2net: Export tunnel offloads only when a VxLAN tunnel is created")
Signed-off-by: Davide Caratti 
Signed-off-by: David S. Miller

net: dsa: b53: Keep CPU port as tagged in all VLANs

2018-10-05T04:52:49+00:00

Commit c499696e7901 ("net: dsa: b53: Stop using dev->cpu_port
incorrectly") was a bit too trigger happy in removing the CPU port from
the VLAN membership because we rely on DSA to program the CPU port VLAN,
which it does, except it does not bother itself with tagged/untagged and
just usese untagged.

Having the CPU port "follow" the user ports tagged/untagged is not great
and does not allow for properly differentiating, so keep the CPU port
tagged in all VLANs.

Reported-by: Gerhard Wiesinger 
Fixes: c499696e7901 ("net: dsa: b53: Stop using dev->cpu_port incorrectly")
Signed-off-by: Florian Fainelli 
Signed-off-by: David S. Miller

bnxt_en: get the reduced max_irqs by the ones used by RDMA

2018-10-05T04:41:16+00:00

When getting the max rings supported, get the reduced max_irqs
by the ones used by RDMA.

If the number MSIX is the limiting factor, this bug may cause the
max ring count to be higher than it should be when RDMA driver is
loaded and may result in ring allocation failures.

Fixes: 30f529473ec9 ("bnxt_en: Do not modify max IRQ count after RDMA driver requests/frees IRQs.")
Signed-off-by: Vasundhara Volam 
Signed-off-by: Michael Chan 
Signed-off-by: David S. Miller

bnxt_en: free hwrm resources, if driver probe fails.

2018-10-05T04:41:16+00:00

When the driver probe fails, all the resources that were allocated prior
to the failure must be freed. However, hwrm dma response memory is not
getting freed.

This patch fixes the problem described above.

Fixes: c0c050c58d84 ("bnxt_en: New Broadcom ethernet driver.")
Signed-off-by: Venkat Duvvuru 
Signed-off-by: Michael Chan 
Signed-off-by: David S. Miller

bnxt_en: Fix enables field in HWRM_QUEUE_COS2BW_CFG request

2018-10-05T04:41:16+00:00

In HWRM_QUEUE_COS2BW_CFG request, enables field should have the bits
set only for the queue ids which are having the valid parameters.

This causes firmware to return error when the TC to hardware CoS queue
mapping is not 1:1 during DCBNL ETS setup.

Fixes: 2e8ef77ee0ff ("bnxt_en: Add TC to hardware QoS queue mapping logic.")
Signed-off-by: Vasundhara Volam 
Signed-off-by: Michael Chan 
Signed-off-by: David S. Miller

bnxt_en: Fix VNIC reservations on the PF.

2018-10-05T04:41:16+00:00

The enables bit for VNIC was set wrong when calling the HWRM_FUNC_CFG
firmware call to reserve VNICs.  This has the effect that the firmware
will keep a large number of VNICs for the PF, and having very few for
VFs.  DPDK driver running on the VFs, which requires more VNICs, may not
work properly as a result.

Fixes: 674f50a5b026 ("bnxt_en: Implement new method to reserve rings.")
Signed-off-by: Michael Chan 
Signed-off-by: David S. Miller