linux-stable/arch/s390
Alexander Duyck 01cfbad79a ipv4: Update parameters for csum_tcpudp_magic to their original types
This patch updates all instances of csum_tcpudp_magic and
csum_tcpudp_nofold to reflect the types that are usually used as the source
inputs.  For example the protocol field is populated based on nexthdr which
is actually an unsigned 8 bit value.  The length is usually populated based
on skb->len which is an unsigned integer.

This addresses an issue in which the IPv6 function csum_ipv6_magic was
generating a checksum using the full 32b of skb->len while
csum_tcpudp_magic was only using the lower 16 bits.  As a result we could
run into issues when attempting to adjust the checksum as there was no
protocol agnostic way to update it.

With this change the value is still truncated as many architectures use
"(len + proto) << 8", however this truncation only occurs for values
greater than 16776960 in length and as such is unlikely to occur as we stop
the inner headers at ~64K in size.

I did have to make a few minor changes in the arm, mn10300, nios2, and
score versions of the function in order to support these changes as they
were either using things such as an OR to combine the protocol and length,
or were using ntohs to convert the length which would have truncated the
value.

I also updated a few spots in terms of whitespace and type differences for
the addresses.  Most of this was just to make sure all of the definitions
were in sync going forward.

Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-13 23:55:13 -04:00
..
appldata
boot s390/boot/decompression: disable floating point in decompressor 2015-09-29 14:45:10 +02:00
configs s390/configs: update default configurations 2016-01-11 13:01:28 +01:00
crypto crypto: s390/sha - replace raw value by their coresponding define 2015-10-15 21:05:11 +08:00
hypfs wrappers for ->i_mutex access 2016-01-22 18:04:28 -05:00
include ipv4: Update parameters for csum_tcpudp_magic to their original types 2016-03-13 23:55:13 -04:00
kernel s390/compat: correct restore of high gprs on signal return 2016-02-22 09:29:35 +01:00
kvm Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2016-01-29 16:05:18 -08:00
lib s390/spinlock: do not yield to a CPU in udelay/mdelay 2015-11-27 09:24:18 +01:00
mm s390/maccess: reduce stnsm instructions 2016-02-17 09:05:04 +01:00
net bpf: move clearing of A/X into classic to eBPF migration prologue 2015-12-18 16:04:51 -05:00
numa s390/numa: move numa_init_late() from device to arch_initcall 2016-01-26 12:45:24 +01:00
oprofile s390/oprofile: fix address range for asynchronous stack 2016-02-10 09:25:22 +01:00
pci s390/pci: remove iomap sanity checks 2016-01-26 12:46:45 +01:00
tools s390/facilities: add helper tool to generate facility lists 2015-12-18 14:59:20 +01:00
defconfig s390/configs: update default configurations 2016-01-11 13:01:28 +01:00
Kbuild s390/numa: add core infrastructure 2015-08-03 18:40:25 +02:00
Kconfig dma-mapping: always provide the dma_map_ops based implementation 2016-01-20 17:09:18 -08:00
Kconfig.debug arch: consolidate CONFIG_STRICT_DEVM in lib/Kconfig.debug 2016-01-09 06:30:49 -08:00
Makefile s390/facilities: add helper tool to generate facility lists 2015-12-18 14:59:20 +01:00