From 6905ac75ec6643fbc93963ad9ded4903e8eeebf0 Mon Sep 17 00:00:00 2001 From: David Gibson Date: Wed, 19 Oct 2022 11:43:46 +1100 Subject: Add csum_udp6() helper for calculating UDP over IPv6 checksums Add a helper for calculating UDP checksums when used over IPv6 For future flexibility, the new helper takes parameters for the fields in the IPv6 pseudo-header, so an IPv6 header or pseudo-header doesn't need to be explicitly constructed. It also allows the UDP header and payload to be in separate buffers, although we don't use this yet. Signed-off-by: David Gibson Signed-off-by: Stefano Brivio --- checksum.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'checksum.h') diff --git a/checksum.h b/checksum.h index bf0620f..2bb2ff9 100644 --- a/checksum.h +++ b/checksum.h @@ -6,6 +6,7 @@ #ifndef CHECKSUM_H #define CHECKSUM_H +struct udphdr; struct icmphdr; struct icmp6hdr; @@ -13,6 +14,9 @@ uint32_t sum_16b(const void *buf, size_t len); uint16_t csum_fold(uint32_t sum); uint16_t csum_unaligned(const void *buf, size_t len, uint32_t init); void csum_icmp4(struct icmphdr *ih, const void *payload, size_t len); +void csum_udp6(struct udphdr *udp6hr, + const struct in6_addr *saddr, const struct in6_addr *daddr, + const void *payload, size_t len); void csum_icmp6(struct icmp6hdr *icmp6hr, const struct in6_addr *saddr, const struct in6_addr *daddr, const void *payload, size_t len); -- cgit v1.2.3