From 67151090bc349d9eec5a0b303d0cb3347b755251 Mon Sep 17 00:00:00 2001 From: David Gibson Date: Wed, 27 Nov 2024 14:54:05 +1100 Subject: iov, checksum: Replace csum_iov() with csum_iov_tail() We usually want to checksum only the tail part of a frame, excluding at least some headers. csum_iov() does that for a frame represented as an IO vector, not actually summing the entire IO vector. We now have struct iov_tail to explicitly represent this construct, so replace csum_iov() with csum_iov_tail() taking that representation rather than 3 parameters. We propagate the same change to csum_udp4() and csum_udp6() which take similar parameters. This slightly simplifies the code, and will allow some further simplifications as struct iov_tail is more widely used. Signed-off-by: David Gibson Signed-off-by: Stefano Brivio --- checksum.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'checksum.h') diff --git a/checksum.h b/checksum.h index 31ba322..e243c97 100644 --- a/checksum.h +++ b/checksum.h @@ -9,6 +9,7 @@ struct udphdr; struct icmphdr; struct icmp6hdr; +struct iov_tail; uint32_t sum_16b(const void *buf, size_t len); uint16_t csum_fold(uint32_t sum); @@ -19,20 +20,19 @@ uint32_t proto_ipv4_header_psum(uint16_t l4len, uint8_t protocol, struct in_addr saddr, struct in_addr daddr); void csum_udp4(struct udphdr *udp4hr, struct in_addr saddr, struct in_addr daddr, - const struct iovec *iov, int iov_cnt, size_t offset); + struct iov_tail *data); void csum_icmp4(struct icmphdr *icmp4hr, const void *payload, size_t dlen); uint32_t proto_ipv6_header_psum(uint16_t payload_len, uint8_t protocol, const struct in6_addr *saddr, const struct in6_addr *daddr); void csum_udp6(struct udphdr *udp6hr, const struct in6_addr *saddr, const struct in6_addr *daddr, - const struct iovec *iov, int iov_cnt, size_t offset); + struct iov_tail *data); void csum_icmp6(struct icmp6hdr *icmp6hr, const struct in6_addr *saddr, const struct in6_addr *daddr, const void *payload, size_t dlen); uint32_t csum_unfolded(const void *buf, size_t len, uint32_t init); uint16_t csum(const void *buf, size_t len, uint32_t init); -uint16_t csum_iov(const struct iovec *iov, size_t n, size_t offset, - uint32_t init); +uint16_t csum_iov_tail(struct iov_tail *tail, uint32_t init); #endif /* CHECKSUM_H */ -- cgit v1.2.3