lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Thu, 30 Oct 2014 18:06:55 +0200 From: Or Gerlitz <ogerlitz@...lanox.com> To: "David S. Miller" <davem@...emloft.net> Cc: netdev@...r.kernel.org, Matan Barak <matanb@...lanox.com>, Amir Vadai <amirv@...lanox.com>, Saeed Mahameed <saeedm@...lanox.com>, Shani Michaeli <shanim@...lanox.com> Subject: [PATCH net-next 7/8] net: Add calaulation of non folded IPV6 pseudo header checksum From: Shani Michaeli <shanim@...lanox.com> Compute IPV6 pseudo header checksum without folding it to a 16 bit return value. Signed-off-by: Shani Michaeli <shanim@...lanox.com> Signed-off-by: Matan Barak <matanb@...lanox.com> --- include/net/ip6_checksum.h | 21 +++++++++++++++++++++ 1 files changed, 21 insertions(+), 0 deletions(-) diff --git a/include/net/ip6_checksum.h b/include/net/ip6_checksum.h index 1a49b73..c45d690 100644 --- a/include/net/ip6_checksum.h +++ b/include/net/ip6_checksum.h @@ -41,6 +41,27 @@ __sum16 csum_ipv6_magic(const struct in6_addr *saddr, __wsum csum); #endif +static inline __wsum csum_ipv6_magic_nofold(const struct in6_addr *saddr, + const struct in6_addr *daddr, + __u32 len, unsigned short proto, + __wsum sum) +{ + __wsum res = sum; + + res = csum_add(res, (__force __wsum)saddr->in6_u.u6_addr32[0]); + res = csum_add(res, (__force __wsum)saddr->in6_u.u6_addr32[1]); + res = csum_add(res, (__force __wsum)saddr->in6_u.u6_addr32[2]); + res = csum_add(res, (__force __wsum)saddr->in6_u.u6_addr32[3]); + res = csum_add(res, (__force __wsum)daddr->in6_u.u6_addr32[0]); + res = csum_add(res, (__force __wsum)daddr->in6_u.u6_addr32[1]); + res = csum_add(res, (__force __wsum)daddr->in6_u.u6_addr32[2]); + res = csum_add(res, (__force __wsum)daddr->in6_u.u6_addr32[3]); + res = csum_add(res, (__force __wsum)htonl(len)); + res = csum_add(res, (__force __wsum)htonl(proto)); + + return res; +} + static inline __wsum ip6_compute_pseudo(struct sk_buff *skb, int proto) { return ~csum_unfold(csum_ipv6_magic(&ipv6_hdr(skb)->saddr, -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists