diff options
Diffstat (limited to 'src/vnet/gso/gro_func.h')
| -rw-r--r-- | src/vnet/gso/gro_func.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/vnet/gso/gro_func.h b/src/vnet/gso/gro_func.h index a410a651933..95def6f8eba 100644 --- a/src/vnet/gso/gro_func.h +++ b/src/vnet/gso/gro_func.h @@ -140,6 +140,23 @@ gro_merge_buffers (vlib_main_t * vm, vlib_buffer_t * b0, } static_always_inline u32 +gro_validate_checksum (vlib_main_t * vm, vlib_buffer_t * b0, + generic_header_offset_t * gho0, int is_ip4) +{ + u32 flags = 0; + + if (b0->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM) + return VNET_BUFFER_F_L4_CHECKSUM_CORRECT; + vlib_buffer_advance (b0, gho0->l3_hdr_offset); + if (is_ip4) + flags = ip4_tcp_udp_validate_checksum (vm, b0); + else + flags = ip6_tcp_udp_icmp_validate_checksum (vm, b0); + vlib_buffer_advance (b0, -gho0->l3_hdr_offset); + return flags; +} + +static_always_inline u32 gro_get_packet_data (vlib_main_t * vm, vlib_buffer_t * b0, generic_header_offset_t * gho0, gro_flow_key_t * flow_key0, int is_l2) @@ -147,6 +164,7 @@ gro_get_packet_data (vlib_main_t * vm, vlib_buffer_t * b0, ip4_header_t *ip4_0 = 0; ip6_header_t *ip6_0 = 0; tcp_header_t *tcp0 = 0; + u32 flags = 0; u32 pkt_len0 = 0; u16 l234_sz0 = 0; u32 sw_if_index0[VLIB_N_RX_TX] = { ~0 }; @@ -181,17 +199,22 @@ gro_get_packet_data (vlib_main_t * vm, vlib_buffer_t * b0, if (gho0->gho_flags & GHO_F_IP4) { + flags = gro_validate_checksum (vm, b0, gho0, 1); gro_get_ip4_flow_from_packet (sw_if_index0, ip4_0, tcp0, flow_key0, is_l2); } else if (gho0->gho_flags & GHO_F_IP6) { + flags = gro_validate_checksum (vm, b0, gho0, 0); gro_get_ip6_flow_from_packet (sw_if_index0, ip6_0, tcp0, flow_key0, is_l2); } else return 0; + if ((flags & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) == 0) + return 0; + pkt_len0 = vlib_buffer_length_in_chain (vm, b0); if (PREDICT_FALSE (pkt_len0 >= TCP_MAX_GSO_SZ)) return 0; |