diff options
Diffstat (limited to 'src/vnet/l2/l2_input.c')
| -rw-r--r-- | src/vnet/l2/l2_input.c | 31 |
1 files changed, 25 insertions, 6 deletions
diff --git a/src/vnet/l2/l2_input.c b/src/vnet/l2/l2_input.c index 041684fb410..591211e9805 100644 --- a/src/vnet/l2/l2_input.c +++ b/src/vnet/l2/l2_input.c @@ -23,6 +23,8 @@ #include <vnet/ip/ip_packet.h> #include <vnet/ip/ip4_packet.h> #include <vnet/ip/ip6_packet.h> +#include <vnet/fib/fib_node.h> +#include <vnet/ethernet/arp_packet.h> #include <vlib/cli.h> #include <vnet/l2/l2_input.h> #include <vnet/l2/l2_output.h> @@ -193,20 +195,37 @@ classify_and_dispatch (l2input_main_t * msm, vlib_buffer_t * b0, u32 * next0) if (ethertype != ETHERNET_TYPE_ARP && (ethertype != ETHERNET_TYPE_IP6 || protocol != IP_PROTOCOL_ICMP6)) feat_mask &= ~(L2INPUT_FEAT_ARP_TERM); + /* - * Check for from-BVI processing - set SHG of ARP/ICMP6 packets from BVI - * to 0 so it can also flood to VXLAN tunnels or other ports with the - * same SHG as that of the BVI. + * For packet from BVI - set SHG of ARP request or ICMPv6 neighbor + * solicitation packet from BVI to 0 so it can also flood to VXLAN + * tunnels or other ports with the same SHG as that of the BVI. */ else if (PREDICT_FALSE (vnet_buffer (b0)->sw_if_index[VLIB_TX] == L2INPUT_BVI)) - vnet_buffer (b0)->l2.shg = 0; + { + if (ethertype == ETHERNET_TYPE_ARP) + { + ethernet_arp_header_t *arp0 = (ethernet_arp_header_t *) l3h0; + if (arp0->opcode == + clib_host_to_net_u16 (ETHERNET_ARP_OPCODE_request)) + vnet_buffer (b0)->l2.shg = 0; + } + else /* must be ICMPv6 */ + { + ip6_header_t *iph0 = (ip6_header_t *) l3h0; + icmp6_neighbor_solicitation_or_advertisement_header_t *ndh0; + ndh0 = ip6_next_header (iph0); + if (ndh0->icmp.type == ICMP6_neighbor_solicitation) + vnet_buffer (b0)->l2.shg = 0; + } + } } else { /* - * Check for from-BVI processing - set SHG of unicast packets from BVI - * to 0 so it is not dropped for VXLAN tunnels or other ports with the + * For packet from BVI - set SHG of unicast packet from BVI to 0 so it + * is not dropped on output to VXLAN tunnels or other ports with the * same SHG as that of the BVI. */ if (PREDICT_FALSE (vnet_buffer (b0)->sw_if_index[VLIB_TX] == |