/* Delete port to the bridge. */
lagopus_result_t
bridge_port_delete(struct bridge_list *bridge_list, const char *name,
uint32_t portid) {
struct bridge *bridge;
struct port *port;
lagopus_result_t ret;
flowdb_wrlock(NULL);
/* Lookup bridge by name. */
bridge = bridge_lookup(bridge_list, name);
if (bridge != NULL) {
port = ifindex2port(bridge->ports, portid);
if (port != NULL && port->bridge == bridge) {
printf("Release port id %u from bridge %s\n",
port->ifindex, bridge->name);
vector_set_index(bridge->ports, port->ofp_port.port_no, NULL);
send_port_status(port, OFPPR_DELETE);
port->bridge = NULL;
ret = LAGOPUS_RESULT_OK;
} else {
ret = LAGOPUS_RESULT_NOT_FOUND;
}
} else {
ret = LAGOPUS_RESULT_NOT_FOUND;
}
flowdb_wrunlock(NULL);
return ret;
}
/* Add a new bridge. */
lagopus_result_t
bridge_add(struct bridge_list *bridge_list, const char *name, uint64_t dpid) {
struct bridge *bridge;
/* Find bridge. */
bridge = bridge_lookup(bridge_list, name);
if (bridge != NULL) {
return LAGOPUS_RESULT_ALREADY_EXISTS;
}
/* Allocate a new bridge. */
bridge = bridge_alloc(name);
if (bridge == NULL) {
return LAGOPUS_RESULT_NO_MEMORY;
}
/* If given dpid is zero, generate random dpid value. */
if (dpid == 0) {
dpid = bridge_dpid_generate();
}
bridge->dpid = dpid;
flowdb_wrlock(NULL);
TAILQ_INSERT_TAIL(bridge_list, bridge, entry);
flowdb_wrunlock(NULL);
lagopus_msg_info("Bridge %s dpid:%0" PRIx64 " is added\n", name, dpid);
return LAGOPUS_RESULT_OK;
}
/* Set bridge dpid. */
lagopus_result_t
dpmgr_bridge_dpid_set(struct dpmgr *dpmgr,
const char *bridge_name,
uint64_t dpid) {
struct bridge *bridge;
lagopus_result_t rv;
FLOWDB_RWLOCK_WRLOCK(NULL);
bridge = bridge_lookup(&dpmgr->bridge_list, bridge_name);
if (bridge != NULL) {
bridge->dpid = dpid;
rv = LAGOPUS_RESULT_OK;
} else {
rv = LAGOPUS_RESULT_NOT_FOUND;
}
FLOWDB_RWLOCK_WRUNLOCK(NULL);
return rv;
}
/* Delete bridge. */
lagopus_result_t
bridge_delete(struct bridge_list *bridge_list, const char *name) {
struct bridge *bridge;
lagopus_result_t ret;
flowdb_wrlock(NULL);
/* Lookup bridge by name. */
bridge = bridge_lookup(bridge_list, name);
if (bridge != NULL) {
TAILQ_REMOVE(bridge_list, bridge, entry);
bridge_free(bridge);
ret = LAGOPUS_RESULT_OK;
} else {
ret = LAGOPUS_RESULT_NOT_FOUND;
}
flowdb_wrunlock(NULL);
/* not implemented yet. */
return ret;
}
/* Add port to the bridge. */
lagopus_result_t
bridge_port_add(struct bridge_list *bridge_list, const char *name,
struct port *port) {
struct bridge *bridge;
lagopus_result_t ret;
flowdb_wrlock(NULL);
/* Lookup bridge by name. */
bridge = bridge_lookup(bridge_list, name);
if (bridge != NULL) {
/* Set port to the bridge's port vector. */
printf("Assigning port id %u to bridge %s\n",
port->ifindex, bridge->name);
vector_set_index(bridge->ports, port->ofp_port.port_no, port);
port->bridge = bridge;
send_port_status(port, OFPPR_ADD);
ret = LAGOPUS_RESULT_OK;
} else {
ret = LAGOPUS_RESULT_NOT_FOUND;
}
flowdb_wrunlock(NULL);
return ret;
}
/* Lookup bridge. */
struct bridge *
dpmgr_bridge_lookup(struct dpmgr *dpmgr, const char *bridge_name) {
return bridge_lookup(&dpmgr->bridge_list, bridge_name);
}
unsigned int
vr_bridge_input(struct vrouter *router, struct vr_packet *pkt,
struct vr_forwarding_md *fmd)
{
int reason, handled;
l4_pkt_type_t l4_type = L4_TYPE_UNKNOWN;
unsigned short pull_len, overlay_len = VROUTER_OVERLAY_LEN;
int8_t *dmac;
struct vr_bridge_entry *be;
struct vr_nexthop *nh = NULL;
struct vr_vrf_stats *stats;
dmac = (int8_t *) pkt_data(pkt);
if (pkt->vp_if->vif_flags & VIF_FLAG_MAC_LEARN) {
if (vr_bridge_learn(router, pkt, fmd)) {
return 0;
}
}
pull_len = 0;
if ((pkt->vp_type == VP_TYPE_IP) || (pkt->vp_type == VP_TYPE_IP6) ||
(pkt->vp_type == VP_TYPE_ARP)) {
pull_len = pkt_get_network_header_off(pkt) - pkt_head_space(pkt);
if (pull_len && !pkt_pull(pkt, pull_len)) {
vr_pfree(pkt, VP_DROP_PULL);
return 0;
}
}
if ((pkt->vp_type == VP_TYPE_IP) || (pkt->vp_type == VP_TYPE_IP6)) {
if (fmd->fmd_dscp < 0) {
if (pkt->vp_type == VP_TYPE_IP) {
fmd->fmd_dscp =
vr_inet_get_tos((struct vr_ip *)pkt_network_header(pkt));
} else if (pkt->vp_type == VP_TYPE_IP6) {
fmd->fmd_dscp =
vr_inet6_get_tos((struct vr_ip6 *)pkt_network_header(pkt));
}
}
} else {
if (fmd->fmd_dotonep < 0) {
fmd->fmd_dotonep = vr_vlan_get_tos(pkt_data(pkt));
}
}
/* Do the bridge lookup for the packets not meant for "me" */
if (!fmd->fmd_to_me) {
/*
* If DHCP packet coming from VM, Trap it to Agent before doing the bridge
* lookup itself
*/
if (vif_is_virtual(pkt->vp_if)) {
if (pkt->vp_type == VP_TYPE_IP)
l4_type = vr_ip_well_known_packet(pkt);
else if (pkt->vp_type == VP_TYPE_IP6)
l4_type = vr_ip6_well_known_packet(pkt);
if (l4_type == L4_TYPE_DHCP_REQUEST) {
if (pkt->vp_if->vif_flags & VIF_FLAG_DHCP_ENABLED) {
vr_trap(pkt, fmd->fmd_dvrf, AGENT_TRAP_L3_PROTOCOLS, NULL);
return 0;
}
}
/*
* Handle the unicast ARP, coming from VM, not
* destined to us. Broadcast ARP requests would be handled
* in L2 multicast nexthop. Multicast ARP on fabric
* interface also would be handled in L2 multicast nexthop.
* Unicast ARP packets on fabric interface would be handled
* in plug routines of interface.
*/
if (!IS_MAC_BMCAST(dmac)) {
handled = 0;
if (pkt->vp_type == VP_TYPE_ARP) {
handled = vr_arp_input(pkt, fmd, dmac);
} else if (l4_type == L4_TYPE_NEIGHBOUR_SOLICITATION) {
handled = vr_neighbor_input(pkt, fmd, dmac);
}
if (handled)
return 0;
}
}
be = bridge_lookup(dmac, fmd);
if (be)
nh = be->be_nh;
if (!nh || nh->nh_type == NH_DISCARD) {
/* If Flooding of unknown unicast not allowed, drop the packet */
if (!vr_unknown_uc_flood(pkt->vp_if, pkt->vp_nh) ||
IS_MAC_BMCAST(dmac)) {
vr_pfree(pkt, VP_DROP_L2_NO_ROUTE);
return 0;
}
be = bridge_lookup(vr_bcast_mac, fmd);
nh = be->be_nh;
if (!nh) {
vr_pfree(pkt, VP_DROP_L2_NO_ROUTE);
return 0;
}
stats = vr_inet_vrf_stats(fmd->fmd_dvrf, pkt->vp_cpu);
if (stats)
stats->vrf_uuc_floods++;
/* Treat this unknown unicast packet as multicast */
pkt->vp_flags |= VP_FLAG_MULTICAST;
}
if (be)
__sync_fetch_and_add(&be->be_packets, 1);
if (nh->nh_type != NH_L2_RCV)
overlay_len = VROUTER_L2_OVERLAY_LEN;
}
/* Adjust MSS for V4 and V6 packets */
if ((pkt->vp_type == VP_TYPE_IP) || (pkt->vp_type == VP_TYPE_IP6)) {
if (vif_is_virtual(pkt->vp_if) &&
vr_from_vm_mss_adj && vr_pkt_from_vm_tcp_mss_adj) {
if ((reason = vr_pkt_from_vm_tcp_mss_adj(pkt, overlay_len))) {
vr_pfree(pkt, reason);
return 0;
}
}
if (fmd->fmd_to_me) {
handled = vr_l3_input(pkt, fmd);
if (!handled) {
vr_pfree(pkt, VP_DROP_NOWHERE_TO_GO);
}
return 0;
}
}
if (pull_len && !pkt_push(pkt, pull_len)) {
vr_pfree(pkt, VP_DROP_PUSH);
return 0;
}
nh_output(pkt, nh, fmd);
return 0;
}
unsigned int
vr_bridge_learn(struct vrouter *router, struct vr_packet *pkt,
struct vr_forwarding_md *fmd)
{
int ret = 0, lock, valid_src;
unsigned int trap_reason;
bool trap = false;
struct vr_eth *eth;
struct vr_packet *pkt_c;
struct vr_nexthop *nh = NULL;
struct vr_bridge_entry *be;
eth = (struct vr_eth *)pkt_data(pkt);
if (!eth)
return 0;
if (IS_MAC_BMCAST(eth->eth_smac))
return 0;
be = bridge_lookup(eth->eth_smac, fmd);
if (be) {
nh = be->be_nh;
}
if (!nh) {
be = bridge_lookup((uint8_t *)vr_bcast_mac, fmd);
if (be) {
nh = be->be_nh;
}
if (!nh)
return 0;
lock = bridge_table_lock(pkt->vp_if, eth->eth_smac);
if (lock < 0)
return 0;
be = bridge_add(0, fmd->fmd_dvrf, eth->eth_smac, nh->nh_id);
bridge_table_unlock(pkt->vp_if, eth->eth_smac, lock);
if (!be)
return -ENOMEM;
trap_reason = AGENT_TRAP_MAC_LEARN;
trap = true;
} else {
if (!(be->be_flags & VR_BE_MAC_MOVED_FLAG) && (nh->nh_validate_src)) {
valid_src = nh->nh_validate_src(pkt, nh, fmd, NULL);
if (valid_src != NH_SOURCE_VALID) {
ret = vr_bridge_set_route_flags(be, VR_BE_MAC_MOVED_FLAG);
if (!ret) {
/* trap the packet for mac move */
trap_reason = AGENT_TRAP_MAC_MOVE;
trap = true;
}
ret = 0;
}
}
}
__sync_fetch_and_add(&be->be_packets, 1);
if (trap) {
pkt_c = pkt_cow(pkt, 0);
if (!pkt_c) {
pkt_c = pkt;
ret = -ENOMEM;
}
vr_trap(pkt_c, fmd->fmd_dvrf,
trap_reason, (void *)&be->be_hentry.hentry_index);
}
return ret;
}
