kernel/linux.git/arch/mips/include/asm/checksum.h, branch linux-4.16.y

MIPS: Fix trailing semicolon

2018-01-24T11:17:20+00:00

The trailing semicolon is an empty statement that does no operation. Removing it since it doesn't do anything. Fixes: d0f0f63ac137 ("MIPS: Rewrite csum_fold to plain C.") Signed-off-by: Luis de Bethencourt Cc: Joe Perches Cc: Ralf Baechle Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/18517/ Signed-off-by: James Hogan

new helper: uaccess_kernel()

2017-03-28T20:43:25+00:00

Signed-off-by: Al Viro

MIPS: Fix special case in 64 bit IP checksumming.

2017-02-17T11:14:27+00:00

For certain arguments such as saddr = 0xc0a8fd60, daddr = 0xc0a8fda1, len = 80, proto = 17, sum = 0x7eae049d there will be a carry when folding the intermediate 64 bit checksum to 32 bit but the code doesn't add the carry back to the one's complement sum, thus an incorrect result will be generated. Reported-by: Mark Zhang Signed-off-by: Ralf Baechle Reviewed-by: James Hogan Cc: stable@vger.kernel.org Signed-off-by: James Hogan

Replace with globally

2016-12-24T19:46:01+00:00

This was entirely automated, using the script by Al: PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*' sed -i -e "s!$PATT!#include !" \ $(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h) to do the replacement at the end of the merge window. Requested-by: Al Viro Signed-off-by: Linus Torvalds

ipv6: Pass proto to csum_ipv6_magic as __u8 instead of unsigned short

2016-03-14T03:55:13+00:00

This patch updates csum_ipv6_magic so that it correctly recognizes that protocol is a unsigned 8 bit value. This will allow us to better understand what limitations may or may not be present in how we handle the data. For example there are a number of places that call htonl on the protocol value. This is likely not necessary and can be replaced with a multiplication by ntohl(1) which will be converted to a shift by the compiler. Signed-off-by: Alexander Duyck Signed-off-by: David S. Miller

ipv4: Update parameters for csum_tcpudp_magic to their original types

2016-03-14T03:55:13+00:00

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 Signed-off-by: David S. Miller

MIPS: LLVMLinux: Fix an 'inline asm input/output type mismatch' error.

2015-04-01T15:21:47+00:00

Replace incorrect matching constraint that caused the error with an alternative that still has the required constraints on the inline assembly. This is the error message reported by clang: arch/mips/include/asm/checksum.h:285:27: error: unsupported inline asm: input with type '__be32' (aka 'unsigned int') matching output with type 'unsigned short' "0" (htonl(len)), "1" (htonl(proto)), "r" (sum)); ^~~~~~~~~~~~ The changed code can be compiled successfully by both gcc and clang. Signed-off-by: Daniel Sanders Signed-off-by: Toma Tabacu Suggested-by: Maciej W. Rozycki Cc: Ralf Baechle Cc: Markos Chandras Cc: Leonid Yegoshin Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/9313/ Signed-off-by: Ralf Baechle

MIPS: Use generic checksum functions for MIPS R6

2015-02-17T15:37:19+00:00

The following instructions have been removed from MIPS R6 ulw, ulh, swl, lwr, lwl, swr. However, all of them are used in the MIPS specific checksum implementation. As a result of which, we will use the generic checksum on MIPS R6 Signed-off-by: Markos Chandras

MIPS: Use generic csum_tcpudp_magic for MIPS.

2015-01-13T15:04:27+00:00

Its implementation is identical to MIPS. Signed-off-by: Ralf Baechle

MIPS: Use

2015-01-13T15:04:27+00:00

Right now the MIPS still overrides all functions. This will change in the future. Signed-off-by: Ralf Baechle