diff options
Diffstat (limited to 'sys/netinet/in_var.h')
| -rw-r--r-- | sys/netinet/in_var.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sys/netinet/in_var.h b/sys/netinet/in_var.h index 4999e90..1190826 100644 --- a/sys/netinet/in_var.h +++ b/sys/netinet/in_var.h @@ -138,6 +138,15 @@ do { \ #endif /* + * IP datagram reassembly. + */ +#define IPREASS_NHASH_LOG2 6 +#define IPREASS_NHASH (1 << IPREASS_NHASH_LOG2) +#define IPREASS_HMASK (IPREASS_NHASH - 1) +#define IPREASS_HASH(x,y) \ + (((((x) & 0xF) | ((((x) >> 8) & 0xF) << 4)) ^ (y)) & IPREASS_HMASK) + +/* * This information should be part of the ifnet structure but we don't wish * to change that - as it might break a number of things */ |
