diff options
Diffstat (limited to 'src/vnet/ipsec/ah.h')
| -rw-r--r-- | src/vnet/ipsec/ah.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/vnet/ipsec/ah.h b/src/vnet/ipsec/ah.h index 37fc29a1ced..f74ad9b01c1 100644 --- a/src/vnet/ipsec/ah.h +++ b/src/vnet/ipsec/ah.h @@ -49,6 +49,15 @@ typedef CLIB_PACKED (struct { }) ip6_and_ah_header_t; /* *INDENT-ON* */ +always_inline u8 +ah_calc_icv_padding_len (u8 icv_size, int is_ipv6) +{ + ASSERT (0 == is_ipv6 || 1 == is_ipv6); + const u8 req_multiple = 4 + 4 * is_ipv6; // 4 for ipv4, 8 for ipv6 + const u8 total_size = sizeof (ah_header_t) + icv_size; + return (req_multiple - total_size % req_multiple) % req_multiple; +} + #endif /* __AH_H__ */ /* |