b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
}
+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,
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 };
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;