diff options
Diffstat (limited to 'net/core/utils.c')
| -rw-r--r-- | net/core/utils.c | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/net/core/utils.c b/net/core/utils.c index 0bf17da40d5..8031eb59054 100644 --- a/net/core/utils.c +++ b/net/core/utils.c @@ -91,17 +91,6 @@ EXPORT_SYMBOL(in_aton); #define IN6PTON_NULL 0x20000000 /* first/tail */ #define IN6PTON_UNKNOWN 0x40000000 -static inline int digit2bin(char c, int delim) -{ - if (c == delim || c == '\0') - return IN6PTON_DELIM; - if (c == '.') - return IN6PTON_DOT; - if (c >= '0' && c <= '9') - return (IN6PTON_DIGIT | (c - '0')); - return IN6PTON_UNKNOWN; -} - static inline int xdigit2bin(char c, int delim) { if (c == delim || c == '\0') @@ -293,3 +282,19 @@ out: } EXPORT_SYMBOL(in6_pton); + +void inet_proto_csum_replace4(__sum16 *sum, struct sk_buff *skb, + __be32 from, __be32 to, int pseudohdr) +{ + __be32 diff[] = { ~from, to }; + if (skb->ip_summed != CHECKSUM_PARTIAL) { + *sum = csum_fold(csum_partial(diff, sizeof(diff), + ~csum_unfold(*sum))); + if (skb->ip_summed == CHECKSUM_COMPLETE && pseudohdr) + skb->csum = ~csum_partial(diff, sizeof(diff), + ~skb->csum); + } else if (pseudohdr) + *sum = ~csum_fold(csum_partial(diff, sizeof(diff), + csum_unfold(*sum))); +} +EXPORT_SYMBOL(inet_proto_csum_replace4); |