static inline bool
vr_my_pkt(unsigned char *pkt_mac, struct vr_interface *vif)
{
/*
* Packet is destined to us if:
* 1) IF destination MAC is our Mac
* 2) If VIF is service interface
*/
if (VR_MAC_CMP(pkt_mac, vif->vif_mac) || vif_is_service(vif))
return true;
return false;
}
/*
* vr_interface_input() is invoked if a packet ingresses an interface.
* This function demultiplexes the packet to right input
* function depending on the protocols enabled on the VIF
*/
unsigned int
vr_virtual_input(unsigned short vrf, struct vr_interface *vif,
struct vr_packet *pkt, unsigned short vlan_id)
{
struct vr_forwarding_md fmd;
vr_init_forwarding_md(&fmd);
fmd.fmd_vlan = vlan_id;
fmd.fmd_dvrf = vrf;
if (vif->vif_flags & VIF_FLAG_MIRROR_RX) {
fmd.fmd_dvrf = vif->vif_vrf;
vr_mirror(vif->vif_router, vif->vif_mirror_id, pkt, &fmd);
}
if (vr_pkt_type(pkt, 0, &fmd) < 0) {
vif_drop_pkt(vif, pkt, 1);
return 0;
}
/*
* we really do not allow any broadcast packets from interfaces
* that are part of transparent service chain, since transparent
* service chain bridges packets across vrf (and hence loops can
* happen)
*/
if ((pkt->vp_flags & VP_FLAG_MULTICAST) &&
(vif_is_service(vif))) {
vif_drop_pkt(vif, pkt, 1);
return 0;
}
if (!vr_flow_forward(pkt->vp_if->vif_router, pkt, &fmd))
return 0;
vr_bridge_input(vif->vif_router, pkt, &fmd);
return 0;
}
static inline void
vr_get_flow_key(struct vr_flow_key *key, uint16_t vlan, struct vr_packet *pkt,
unsigned int sip, unsigned int dip, unsigned char proto,
unsigned short sport, unsigned short dport)
{
unsigned short nh_id;
/* copy both source and destinations */
key->key_src_ip = sip;
key->key_dest_ip = dip;
key->key_proto = proto;
key->key_zero = 0;
if (vif_is_fabric(pkt->vp_if) && pkt->vp_nh) {
nh_id = pkt->vp_nh->nh_id;
} else if (vif_is_service(pkt->vp_if)) {
nh_id = vif_vrf_table_get_nh(pkt->vp_if, vlan);
} else {
nh_id = pkt->vp_if->vif_nh_id;
}
key->key_nh_id = nh_id;
switch (proto) {
case VR_IP_PROTO_TCP:
case VR_IP_PROTO_UDP:
case VR_IP_PROTO_ICMP:
key->key_src_port = sport;
key->key_dst_port = dport;
break;
default:
key->key_src_port = key->key_dst_port = 0;
break;
}
return;
}