diff options
| -rw-r--r-- | checksum.c | 34 | ||||
| -rw-r--r-- | checksum.h | 3 |
2 files changed, 17 insertions, 20 deletions
@@ -85,7 +85,7 @@ */ /* NOLINTNEXTLINE(clang-diagnostic-unknown-attributes) */ __attribute__((optimize("-fno-strict-aliasing"))) -uint32_t sum_16b(const void *buf, size_t len) +static uint32_t sum_16b(const void *buf, size_t len) { const uint16_t *p = buf; uint32_t sum = 0; @@ -107,7 +107,7 @@ uint32_t sum_16b(const void *buf, size_t len) * * Return: 16-bit folded sum */ -uint16_t csum_fold(uint32_t sum) +static uint16_t csum_fold(uint32_t sum) { while (sum >> 16) sum = (sum & 0xffff) + (sum >> 16); @@ -162,6 +162,21 @@ uint32_t proto_ipv4_header_psum(uint16_t l4len, uint8_t protocol, } /** + * csum() - Compute TCP/IP-style checksum + * @buf: Input buffer + * @len: Input length + * @init: Initial 32-bit checksum, 0 for no pre-computed checksum + * + * Return: 16-bit folded, complemented checksum + */ +/* NOLINTNEXTLINE(clang-diagnostic-unknown-attributes) */ +__attribute__((optimize("-fno-strict-aliasing"))) /* See csum_16b() */ +static uint16_t csum(const void *buf, size_t len, uint32_t init) +{ + return (uint16_t)~csum_fold(csum_unfolded(buf, len, init)); +} + +/** * csum_udp4() - Calculate and set checksum for a UDP over IPv4 packet * @udp4hr: UDP header, initialised apart from checksum * @saddr: IPv4 source address @@ -483,21 +498,6 @@ uint32_t csum_unfolded(const void *buf, size_t len, uint32_t init) #endif /* !__AVX2__ */ /** - * csum() - Compute TCP/IP-style checksum - * @buf: Input buffer - * @len: Input length - * @init: Initial 32-bit checksum, 0 for no pre-computed checksum - * - * Return: 16-bit folded, complemented checksum - */ -/* NOLINTNEXTLINE(clang-diagnostic-unknown-attributes) */ -__attribute__((optimize("-fno-strict-aliasing"))) /* See csum_16b() */ -uint16_t csum(const void *buf, size_t len, uint32_t init) -{ - return (uint16_t)~csum_fold(csum_unfolded(buf, len, init)); -} - -/** * csum_iov_tail() - Calculate unfolded checksum for the tail of an IO vector * @tail: IO vector tail to checksum * @init Initial 32-bit checksum, 0 for no pre-computed checksum @@ -11,8 +11,6 @@ struct icmphdr; struct icmp6hdr; struct iov_tail; -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); uint16_t csum_ip4_header(uint16_t l3len, uint8_t protocol, struct in_addr saddr, struct in_addr daddr); @@ -32,7 +30,6 @@ 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_tail(struct iov_tail *tail, uint32_t init); #endif /* CHECKSUM_H */ |