linux/include
Willem de Bruijn 217e6fa24c net: introduce device min_header_len
The stack must not pass packets to device drivers that are shorter
than the minimum link layer header length.

Previously, packet sockets would drop packets smaller than or equal
to dev->hard_header_len, but this has false positives. Zero length
payload is used over Ethernet. Other link layer protocols support
variable length headers. Support for validation of these protocols
removed the min length check for all protocols.

Introduce an explicit dev->min_header_len parameter and drop all
packets below this value. Initially, set it to non-zero only for
Ethernet and loopback. Other protocols can follow in a patch to
net-next.

Fixes: 9ed988cd59 ("packet: validate variable length ll headers")
Reported-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-08 13:56:37 -05:00
..
acpi More ACPI updates for v4.10-rc1 2016-12-22 10:19:32 -08:00
asm-generic modversions: treat symbol CRCs as 32 bit quantities 2017-02-03 08:28:25 -08:00
clocksource
crypto
drm drm: Don't race connector registration 2017-01-30 10:17:32 +01:00
dt-bindings dt-bindings: mfd: Remove TPS65217 interrupts 2016-12-27 10:06:00 -08:00
keys
kvm KVM: arm64: Access CNTHCTL_EL2 bit fields correctly on VHE systems 2017-01-13 11:19:25 +00:00
linux net: introduce device min_header_len 2017-02-08 13:56:37 -05:00
math-emu
media
memory
misc
net lwtunnel: valid encap attr check should return 0 when lwtunnel is disabled 2017-02-08 12:52:11 -05:00
pcmcia
ras
rdma RDMA/core: Add the function ib_mtu_int_to_enum 2017-01-24 15:34:22 -05:00
rxrpc
scsi Merge remote-tracking branch 'mkp-scsi/fixes' into fixes 2017-01-17 17:32:54 -05:00
soc ARCv2: MCIP: update the BCR per current changes 2017-01-24 11:05:59 -08:00
sound Merge remote-tracking branches 'asoc/fix/arizona', 'asoc/fix/dpcm', 'asoc/fix/dwc', 'asoc/fix/fsl-ssi' and 'asoc/fix/hdmi-codec' into asoc-linus 2017-01-10 10:47:50 +00:00
target target: add XCOPY target/segment desc sense codes 2017-01-10 08:40:32 -08:00
trace Merge branch 'for-linus-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 2017-01-13 17:40:22 -08:00
uapi ipv6: sr: remove cleanup flag and fix HMAC computation 2017-02-03 11:05:23 -05:00
video
xen
Kbuild