diff options
Diffstat (limited to 'src/vnet/l2/l2_api.c')
| -rw-r--r-- | src/vnet/l2/l2_api.c | 167 |
1 files changed, 166 insertions, 1 deletions
diff --git a/src/vnet/l2/l2_api.c b/src/vnet/l2/l2_api.c index e8b103ac2c7..fa852742f9f 100644 --- a/src/vnet/l2/l2_api.c +++ b/src/vnet/l2/l2_api.c @@ -28,6 +28,7 @@ #include <vnet/l2/l2_learn.h> #include <vnet/l2/l2_bd.h> #include <vnet/l2/l2_bvi.h> +#include <vnet/l2/l2_arp_term.h> #include <vnet/ip/ip_types_api.h> #include <vnet/ethernet/ethernet_types_api.h> @@ -77,7 +78,8 @@ _(L2_INTERFACE_PBB_TAG_REWRITE, l2_interface_pbb_tag_rewrite) \ _(BRIDGE_DOMAIN_SET_MAC_AGE, bridge_domain_set_mac_age) \ _(SW_INTERFACE_SET_VPATH, sw_interface_set_vpath) \ _(BVI_CREATE, bvi_create) \ -_(BVI_DELETE, bvi_delete) +_(BVI_DELETE, bvi_delete) \ +_(WANT_L2_ARP_TERM_EVENTS, want_l2_arp_term_events) static void send_l2_xconnect_details (vl_api_registration_t * reg, u32 context, @@ -1045,6 +1047,169 @@ vl_api_bvi_delete_t_handler (vl_api_bvi_delete_t * mp) REPLY_MACRO (VL_API_BVI_DELETE_REPLY); } +static bool +l2_arp_term_publish_event_is_equal (const l2_arp_term_publish_event_t * e1, + const l2_arp_term_publish_event_t * e2) +{ + if (e1 == NULL || e2 == NULL) + return false; + return (ip46_address_is_equal (&e1->ip, &e2->ip) && + (e1->sw_if_index == e2->sw_if_index) && + (mac_address_equal (&e1->mac, &e2->mac))); +} + +static uword +l2_arp_term_process (vlib_main_t * vm, vlib_node_runtime_t * rt, + vlib_frame_t * f) +{ + /* These cross the longjmp boundary (vlib_process_wait_for_event) + * and need to be volatile - to prevent them from being optimized into + * a register - which could change during suspension */ + volatile f64 last = vlib_time_now (vm); + volatile l2_arp_term_publish_event_t last_event = { }; + + l2_arp_term_main_t *l2am = &l2_arp_term_main; + + while (1) + { + uword event_type = L2_ARP_TERM_EVENT_PUBLISH; + vpe_client_registration_t *reg; + f64 now; + + vlib_process_wait_for_event (vm); + + vlib_process_get_event_data (vm, &event_type); + now = vlib_time_now (vm); + + if (event_type == L2_ARP_TERM_EVENT_PUBLISH) + { + l2_arp_term_publish_event_t *event; + + vec_foreach (event, l2am->publish_events) + { + /* dampen duplicate events - cast away volatile */ + if (l2_arp_term_publish_event_is_equal + (event, (l2_arp_term_publish_event_t *) & last_event) && + (now - last) < 10.0) + { + continue; + } + last_event = *event; + last = now; + + /* *INDENT-OFF* */ + pool_foreach(reg, vpe_api_main.l2_arp_term_events_registrations, + ({ + vl_api_registration_t *vl_reg; + vl_reg = vl_api_client_index_to_registration (reg->client_index); + ASSERT (vl_reg != NULL); + + if (reg && vl_api_can_send_msg (vl_reg)) + { + vl_api_l2_arp_term_event_t * vevent; + vevent = vl_msg_api_alloc (sizeof *vevent); + clib_memset (vevent, 0, sizeof *vevent); + vevent->_vl_msg_id = htons (VL_API_L2_ARP_TERM_EVENT); + vevent->client_index = reg->client_index; + vevent->pid = reg->client_pid; + ip_address_encode(&event->ip, + event->type, + &vevent->ip); + vevent->sw_if_index = htonl(event->sw_if_index); + mac_address_encode(&event->mac, vevent->mac); + vl_api_send_msg (vl_reg, (u8 *) vevent); + } + })); + /* *INDENT-ON* */ + } + vec_reset_length (l2am->publish_events); + } + } + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (l2_arp_term_process_node) = { + .function = l2_arp_term_process, + .type = VLIB_NODE_TYPE_PROCESS, + .name = "l2-arp-term-publisher", +}; +/* *INDENT-ON* */ + +static void +vl_api_want_l2_arp_term_events_t_handler (vl_api_want_l2_arp_term_events_t * + mp) +{ + vl_api_want_l2_arp_term_events_reply_t *rmp; + vpe_api_main_t *am = &vpe_api_main; + vpe_client_registration_t *rp; + int rv = 0; + uword *p; + + p = hash_get (am->l2_arp_term_events_registration_hash, mp->client_index); + + if (p) + { + if (mp->enable) + { + clib_warning ("pid %d: already enabled...", mp->pid); + rv = VNET_API_ERROR_INVALID_REGISTRATION; + goto reply; + } + else + { + rp = pool_elt_at_index (am->l2_arp_term_events_registrations, p[0]); + pool_put (am->l2_arp_term_events_registrations, rp); + hash_unset (am->l2_arp_term_events_registration_hash, + mp->client_index); + if (pool_elts (am->l2_arp_term_events_registrations) == 0) + l2_arp_term_set_publisher_node (false); + goto reply; + } + } + if (mp->enable == 0) + { + clib_warning ("pid %d: already disabled...", mp->pid); + rv = VNET_API_ERROR_INVALID_REGISTRATION; + goto reply; + } + pool_get (am->l2_arp_term_events_registrations, rp); + rp->client_index = mp->client_index; + rp->client_pid = mp->pid; + hash_set (am->l2_arp_term_events_registration_hash, rp->client_index, + rp - am->l2_arp_term_events_registrations); + l2_arp_term_set_publisher_node (true); + +reply: + REPLY_MACRO (VL_API_WANT_L2_ARP_TERM_EVENTS_REPLY); +} + +static clib_error_t * +want_l2_arp_term_events_reaper (u32 client_index) +{ + vpe_client_registration_t *rp; + vpe_api_main_t *am; + uword *p; + + am = &vpe_api_main; + + /* remove from the registration hash */ + p = hash_get (am->l2_arp_term_events_registration_hash, client_index); + + if (p) + { + rp = pool_elt_at_index (am->l2_arp_term_events_registrations, p[0]); + pool_put (am->l2_arp_term_events_registrations, rp); + hash_unset (am->l2_arp_term_events_registration_hash, client_index); + if (pool_elts (am->l2_arp_term_events_registrations) == 0) + l2_arp_term_set_publisher_node (false); + } + return (NULL); +} + +VL_MSG_API_REAPER_FUNCTION (want_l2_arp_term_events_reaper); + /* * l2_api_hookup * Add vpe's API message handlers to the table. |