diff options
Diffstat (limited to 'src/vnet/ip/ip6_forward.c')
| -rw-r--r-- | src/vnet/ip/ip6_forward.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/src/vnet/ip/ip6_forward.c b/src/vnet/ip/ip6_forward.c index 6df3d4b036b..3410a5dc8f9 100644 --- a/src/vnet/ip/ip6_forward.c +++ b/src/vnet/ip/ip6_forward.c @@ -993,10 +993,18 @@ ip6_tcp_udp_icmp_compute_checksum (vlib_main_t * vm, vlib_buffer_t * p0, } n_bytes_left = n_this_buffer = payload_length_host_byte_order; - if (p0 && n_this_buffer + headers_size > p0->current_length) - n_this_buffer = - p0->current_length > - headers_size ? p0->current_length - headers_size : 0; + + if (p0) + { + u32 n_ip_bytes_this_buffer = + p0->current_length - (((u8 *) ip0 - p0->data) - p0->current_data); + if (n_this_buffer + headers_size > n_ip_bytes_this_buffer) + { + n_this_buffer = p0->current_length > headers_size ? + n_ip_bytes_this_buffer - headers_size : 0; + } + } + while (1) { sum0 = ip_incremental_checksum (sum0, data_this_buffer, n_this_buffer); |