* limitations under the License.
*/
+#include <vlibmemory/api.h>
#include <vlib/vlib.h>
-#include <vnet/vnet.h>
-#include <vnet/pg/pg.h>
-#include <vnet/ip/ip.h>
-#include <vnet/udp/udp.h>
#include <vppinfra/hash.h>
#include <vppinfra/error.h>
#include <vppinfra/elog.h>
+#include <vnet/vnet.h>
+#include <vnet/pg/pg.h>
+#include <vnet/ip/ip.h>
+#include <vnet/udp/udp.h>
#include <vnet/udp/udp_packet.h>
-
-#include <vlibmemory/api.h>
-#include "../session/application_interface.h"
+#include <vnet/session/session.h>
static char *udp_error_strings[] = {
#define udp_error(n,s) s,
ip6_header_t *ip60;
u8 *data0;
stream_session_t *s0;
- transport_connection_t *tc0 = 0;
- udp_connection_t *child0, *new_uc0;
- int written0;
+ udp_connection_t *uc0, *child0, *new_uc0;
+ transport_connection_t *tc0;
+ int wrote0;
+ void *rmt_addr, *lcl_addr;
+ session_dgram_hdr_t hdr0;
/* speculatively enqueue b0 to the current next frame */
bi0 = from[0];
if (is_ip4)
{
- /* $$$$ fixme: udp_local doesn't do ip options correctly anyhow */
+ /* TODO: must fix once udp_local does ip options correctly */
ip40 = (ip4_header_t *) (((u8 *) udp0) - sizeof (*ip40));
s0 = session_lookup_safe4 (fib_index0, &ip40->dst_address,
&ip40->src_address, udp0->dst_port,
udp0->src_port, TRANSPORT_PROTO_UDP);
+ lcl_addr = &ip40->dst_address;
+ rmt_addr = &ip40->src_address;
+
}
else
{
s0 = session_lookup_safe6 (fib_index0, &ip60->dst_address,
&ip60->src_address, udp0->dst_port,
udp0->src_port, TRANSPORT_PROTO_UDP);
+ lcl_addr = &ip60->dst_address;
+ rmt_addr = &ip60->src_address;
}
- if (PREDICT_FALSE (s0 == 0))
+ if (PREDICT_FALSE (!s0))
{
error0 = UDP_ERROR_NO_LISTENER;
goto trace0;
}
- if (PREDICT_TRUE (s0->session_state == SESSION_STATE_READY))
+ if (s0->session_state == SESSION_STATE_OPENED)
{
+ /* TODO optimization: move cl session to right thread
+ * However, since such a move would affect the session handle,
+ * which we pass 'raw' to the app, we'd also have notify the
+ * app of the change or change the way we pass handles to apps.
+ */
tc0 = session_get_transport (s0);
+ uc0 = udp_get_connection_from_transport (tc0);
+ if (uc0->is_connected)
+ {
+ /*
+ * Clone the transport. It will be cleaned up with the
+ * session once we notify the session layer.
+ */
+ new_uc0 = udp_connection_clone_safe (s0->connection_index,
+ s0->thread_index);
+ ASSERT (s0->session_index == new_uc0->c_s_index);
+
+ /*
+ * Drop the 'lock' on pool resize
+ */
+ session_pool_remove_peeker (s0->thread_index);
+ session_dgram_connect_notify (&new_uc0->connection,
+ s0->thread_index, &s0);
+ tc0 = &new_uc0->connection;
+ }
}
- else if (s0->session_state == SESSION_STATE_CONNECTING_READY)
+ else if (s0->session_state == SESSION_STATE_READY)
{
- /*
- * Clone the transport. It will be cleaned up with the
- * session once we notify the session layer.
- */
- new_uc0 = udp_conenction_clone_safe (s0->connection_index,
- s0->thread_index);
- ASSERT (s0->session_index == new_uc0->c_s_index);
-
- /*
- * Drop the 'lock' on pool resize
- */
- session_pool_remove_peeker (s0->thread_index);
- session_dgram_connect_notify (&new_uc0->connection,
- s0->thread_index, &s0);
- tc0 = &new_uc0->connection;
+ tc0 = session_get_transport (s0);
+ uc0 = udp_get_connection_from_transport (tc0);
}
else if (s0->session_state == SESSION_STATE_LISTENING)
{
tc0 = listen_session_get_transport (s0);
-
- child0 = udp_connection_alloc (my_thread_index);
- if (is_ip4)
- {
- ip_set (&child0->c_lcl_ip, &ip40->dst_address, 1);
- ip_set (&child0->c_rmt_ip, &ip40->src_address, 1);
- }
- else
- {
- ip_set (&child0->c_lcl_ip, &ip60->dst_address, 0);
- ip_set (&child0->c_rmt_ip, &ip60->src_address, 0);
- }
- child0->c_lcl_port = udp0->dst_port;
- child0->c_rmt_port = udp0->src_port;
- child0->c_is_ip4 = is_ip4;
- child0->mtu = 1460; /* $$$$ policy */
-
- if (stream_session_accept
- (&child0->connection, tc0->s_index, 1))
+ uc0 = udp_get_connection_from_transport (tc0);
+ if (uc0->is_connected)
{
- error0 = UDP_ERROR_CREATE_SESSION;
- goto trace0;
+ child0 = udp_connection_alloc (my_thread_index);
+ if (is_ip4)
+ {
+ ip_set (&child0->c_lcl_ip, &ip40->dst_address, 1);
+ ip_set (&child0->c_rmt_ip, &ip40->src_address, 1);
+ }
+ else
+ {
+ ip_set (&child0->c_lcl_ip, &ip60->dst_address, 0);
+ ip_set (&child0->c_rmt_ip, &ip60->src_address, 0);
+ }
+ child0->c_lcl_port = udp0->dst_port;
+ child0->c_rmt_port = udp0->src_port;
+ child0->c_is_ip4 = is_ip4;
+
+ if (stream_session_accept (&child0->connection,
+ tc0->s_index, 1))
+ {
+ error0 = UDP_ERROR_CREATE_SESSION;
+ goto trace0;
+ }
+ s0 =
+ session_get (child0->c_s_index, child0->c_thread_index);
+ s0->session_state = SESSION_STATE_READY;
+ tc0 = &child0->connection;
+ uc0 = udp_get_connection_from_transport (tc0);
+ error0 = UDP_ERROR_LISTENER;
}
- s0 = session_get (child0->c_s_index, child0->c_thread_index);
- s0->session_state = SESSION_STATE_READY;
- tc0 = &child0->connection;
-
- error0 = UDP_ERROR_LISTENER;
}
else
{
goto trace0;
}
- written0 = session_enqueue_dgram_connection (s0, b0, tc0->proto,
- 1 /* queue evt */ );
- if (PREDICT_FALSE (written0 < 0))
+ if (!uc0->is_connected)
{
- error0 = UDP_ERROR_FIFO_FULL;
- goto trace0;
+ if (svm_fifo_max_enqueue (s0->server_rx_fifo)
+ < b0->current_length + sizeof (session_dgram_hdr_t))
+ {
+ error0 = UDP_ERROR_FIFO_FULL;
+ goto trace0;
+ }
+ hdr0.data_length = b0->current_length;
+ hdr0.data_offset = 0;
+ ip_set (&hdr0.lcl_ip, lcl_addr, is_ip4);
+ ip_set (&hdr0.rmt_ip, rmt_addr, is_ip4);
+ hdr0.lcl_port = udp0->dst_port;
+ hdr0.rmt_port = udp0->src_port;
+ hdr0.is_ip4 = is_ip4;
+
+ clib_spinlock_lock (&uc0->rx_lock);
+ wrote0 = session_enqueue_dgram_connection (s0, &hdr0, b0,
+ TRANSPORT_PROTO_UDP,
+ 1 /* queue evt */ );
+ clib_spinlock_unlock (&uc0->rx_lock);
+ ASSERT (wrote0 > 0);
+
+ if (s0->session_state != SESSION_STATE_LISTENING)
+ session_pool_remove_peeker (s0->thread_index);
+ }
+ else
+ {
+ if (svm_fifo_max_enqueue (s0->server_rx_fifo)
+ < b0->current_length)
+ {
+ error0 = UDP_ERROR_FIFO_FULL;
+ goto trace0;
+ }
+ wrote0 = session_enqueue_stream_connection (tc0, b0, 0,
+ 1 /* queue evt */ ,
+ 1 /* in order */ );
+ ASSERT (wrote0 > 0);
}
trace0:
+
b0->error = node->errors[error0];
if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
udp_input_trace_t *t = vlib_add_trace (vm, node, b0,
sizeof (*t));
- t->connection = tc0 ? tc0->c_index : ~0;
+ t->connection = s0 ? s0->connection_index : ~0;
t->disposition = error0;
t->thread_index = my_thread_index;
}
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- errors = session_manager_flush_enqueue_events (TRANSPORT_PROTO_UDP,
- my_thread_index);
+ errors = session_manager_flush_all_enqueue_events (TRANSPORT_PROTO_UDP);
udp_input_inc_counter (vm, is_ip4, UDP_ERROR_EVENT_FIFO_FULL, errors);
return frame->n_vectors;
}
-vlib_node_registration_t udp4_input_node;
-vlib_node_registration_t udp6_input_node;
static uword
udp4_input (vlib_main_t * vm, vlib_node_runtime_t * node,
Code Review / vpp.git / blobdiff