/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
+ * Copyright (c) 2016-2019 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
* 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 <vnet/session/session.h>
-#include <vlibmemory/api.h>
-#include "../session/application_interface.h"
-
-vlib_node_registration_t udp4_uri_input_node;
+static char *udp_error_strings[] = {
+#define udp_error(n,s) s,
+#include "udp_error.def"
+#undef udp_error
+};
typedef struct
{
- u32 session;
+ u32 connection;
u32 disposition;
u32 thread_index;
-} udp4_uri_input_trace_t;
+} udp_input_trace_t;
/* packet trace format function */
static u8 *
-format_udp4_uri_input_trace (u8 * s, va_list * args)
+format_udp_input_trace (u8 * s, va_list * args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
- udp4_uri_input_trace_t *t = va_arg (*args, udp4_uri_input_trace_t *);
+ udp_input_trace_t *t = va_arg (*args, udp_input_trace_t *);
- s = format (s, "UDP4_URI_INPUT: session %d, disposition %d, thread %d",
- t->session, t->disposition, t->thread_index);
+ s = format (s, "UDP_INPUT: connection %d, disposition %d, thread %d",
+ t->connection, t->disposition, t->thread_index);
return s;
}
+#define foreach_udp_input_next \
+ _ (DROP, "error-drop")
+
typedef enum
{
- UDP4_URI_INPUT_NEXT_DROP,
- UDP4_URI_INPUT_N_NEXT,
-} udp4_uri_input_next_t;
-
-static char *udp4_uri_input_error_strings[] = {
-#define _(sym,string) string,
- foreach_session_input_error
+#define _(s, n) UDP_INPUT_NEXT_##s,
+ foreach_udp_input_next
#undef _
-};
+ UDP_INPUT_N_NEXT,
+} udp_input_next_t;
-static uword
-udp4_uri_input_node_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
+always_inline void
+udp_input_inc_counter (vlib_main_t * vm, u8 is_ip4, u8 evt, u8 val)
+{
+ if (PREDICT_TRUE (!val))
+ return;
+
+ if (is_ip4)
+ vlib_node_increment_counter (vm, udp4_input_node.index, evt, val);
+ else
+ vlib_node_increment_counter (vm, udp6_input_node.index, evt, val);
+}
+
+always_inline uword
+udp46_input_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * frame, u8 is_ip4)
{
u32 n_left_from, *from, *to_next;
- udp4_uri_input_next_t next_index;
- udp_uri_main_t *um = vnet_get_udp_main ();
- session_manager_main_t *smm = vnet_get_session_manager_main ();
+ u32 next_index, errors;
u32 my_thread_index = vm->thread_index;
- u8 my_enqueue_epoch;
- u32 *session_indices_to_enqueue;
- static u32 serial_number;
- int i;
-
- my_enqueue_epoch = ++smm->current_enqueue_epoch[my_thread_index];
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
while (n_left_from > 0 && n_left_to_next > 0)
{
- u32 bi0;
+ u32 bi0, fib_index0;
vlib_buffer_t *b0;
- u32 next0 = UDP4_URI_INPUT_NEXT_DROP;
- u32 error0 = SESSION_ERROR_ENQUEUED;
+ u32 next0 = UDP_INPUT_NEXT_DROP;
+ u32 error0 = UDP_ERROR_ENQUEUED;
udp_header_t *udp0;
- ip4_header_t *ip0;
- stream_session_t *s0;
- svm_fifo_t *f0;
- u16 udp_len0;
+ ip4_header_t *ip40;
+ ip6_header_t *ip60;
u8 *data0;
+ session_t *s0;
+ 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];
b0 = vlib_get_buffer (vm, bi0);
/* udp_local hands us a pointer to the udp data */
-
data0 = vlib_buffer_get_current (b0);
udp0 = (udp_header_t *) (data0 - sizeof (*udp0));
+ fib_index0 = vnet_buffer (b0)->ip.fib_index;
- /* $$$$ fixme: udp_local doesn't do ip options correctly anyhow */
- ip0 = (ip4_header_t *) (((u8 *) udp0) - sizeof (*ip0));
- s0 = 0;
+ if (is_ip4)
+ {
+ /* 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;
- /* lookup session */
- s0 = stream_session_lookup4 (&ip0->dst_address, &ip0->src_address,
- udp0->dst_port, udp0->src_port,
- SESSION_TYPE_IP4_UDP, my_thread_index);
+ }
+ else
+ {
+ ip60 = (ip6_header_t *) (((u8 *) udp0) - sizeof (*ip60));
+ 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;
+ }
- /* no listener */
- if (PREDICT_FALSE (s0 == 0))
+ if (PREDICT_FALSE (!s0))
{
- error0 = SESSION_ERROR_NO_LISTENER;
+ error0 = UDP_ERROR_NO_LISTENER;
goto trace0;
}
- f0 = s0->server_rx_fifo;
-
- /* established hit */
- if (PREDICT_TRUE (s0->session_state == SESSION_STATE_READY))
+ if (s0->session_state == SESSION_STATE_OPENED)
{
- udp_len0 = clib_net_to_host_u16 (udp0->length);
-
- if (PREDICT_FALSE (udp_len0 > svm_fifo_max_enqueue (f0)))
+ /* 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)
{
- error0 = SESSION_ERROR_FIFO_FULL;
- goto trace0;
+ /*
+ * 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;
}
-
- svm_fifo_enqueue_nowait (f0, 0 /* pid */ ,
- udp_len0 - sizeof (*udp0),
- (u8 *) (udp0 + 1));
-
- b0->error = node->errors[SESSION_ERROR_ENQUEUED];
-
- /* We need to send an RX event on this fifo */
- if (s0->enqueue_epoch != my_enqueue_epoch)
+ }
+ else if (s0->session_state == SESSION_STATE_READY)
+ {
+ 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);
+ uc0 = udp_get_connection_from_transport (tc0);
+ if (uc0->is_connected)
{
- s0->enqueue_epoch = my_enqueue_epoch;
-
- vec_add1 (smm->session_indices_to_enqueue_by_thread
- [my_thread_index],
- s0 - smm->sessions[my_thread_index]);
+ 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 (session_stream_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;
}
}
- /* listener hit */
- else if (s0->session_state == SESSION_STATE_LISTENING)
+ else
{
- udp_connection_t *us;
- int rv;
-
- error0 = SESSION_ERROR_NOT_READY;
-
- /*
- * create udp transport session
- */
- pool_get (um->udp_sessions[my_thread_index], us);
-
- us->mtu = 1024; /* $$$$ policy */
-
- us->c_lcl_ip4.as_u32 = ip0->dst_address.as_u32;
- us->c_rmt_ip4.as_u32 = ip0->src_address.as_u32;
- us->c_lcl_port = udp0->dst_port;
- us->c_rmt_port = udp0->src_port;
- us->c_proto = SESSION_TYPE_IP4_UDP;
- us->c_c_index = us - um->udp_sessions[my_thread_index];
-
- /*
- * create stream session and attach the udp session to it
- */
- rv = stream_session_accept (&us->connection, s0->session_index,
- SESSION_TYPE_IP4_UDP,
- 1 /*notify */ );
- if (rv)
- error0 = rv;
+ error0 = UDP_ERROR_NOT_READY;
+ goto trace0;
+ }
+ if (!uc0->is_connected)
+ {
+ if (svm_fifo_max_enqueue (s0->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
{
-
- error0 = SESSION_ERROR_NOT_READY;
- goto trace0;
+ if (svm_fifo_max_enqueue (s0->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)
&& (b0->flags & VLIB_BUFFER_IS_TRACED)))
{
- udp4_uri_input_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
+ udp_input_trace_t *t = vlib_add_trace (vm, node, b0,
+ sizeof (*t));
- t->session = ~0;
- if (s0)
- t->session = s0 - smm->sessions[my_thread_index];
+ t->connection = s0 ? s0->connection_index : ~0;
t->disposition = error0;
t->thread_index = my_thread_index;
}
- /* verify speculative enqueue, maybe switch current next frame */
vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
to_next, n_left_to_next,
bi0, next0);
vlib_put_next_frame (vm, node, next_index, n_left_to_next);
}
- /* Send enqueue events */
-
- session_indices_to_enqueue =
- smm->session_indices_to_enqueue_by_thread[my_thread_index];
-
- for (i = 0; i < vec_len (session_indices_to_enqueue); i++)
- {
- session_fifo_event_t evt;
- unix_shared_memory_queue_t *q;
- stream_session_t *s0;
- application_t *server0;
-
- /* Get session */
- s0 = pool_elt_at_index (smm->sessions[my_thread_index],
- session_indices_to_enqueue[i]);
-
- /* Get session's server */
- server0 = application_get (s0->app_index);
-
- /* Built-in server? Deliver the goods... */
- if (server0->cb_fns.builtin_server_rx_callback)
- {
- server0->cb_fns.builtin_server_rx_callback (s0);
- continue;
- }
-
- if (svm_fifo_set_event (s0->server_rx_fifo))
- {
- /* Fabricate event */
- evt.fifo = s0->server_rx_fifo;
- evt.event_type = FIFO_EVENT_SERVER_RX;
- evt.event_id = serial_number++;
-
- /* Add event to server's event queue */
- q = server0->event_queue;
-
- /* Don't block for lack of space */
- if (PREDICT_TRUE (q->cursize < q->maxsize))
- {
- unix_shared_memory_queue_add (server0->event_queue,
- (u8 *) & evt,
- 0 /* do wait for mutex */ );
- }
- else
- {
- vlib_node_increment_counter (vm, udp4_uri_input_node.index,
- SESSION_ERROR_FIFO_FULL, 1);
- }
- }
- /* *INDENT-OFF* */
- if (1)
- {
- ELOG_TYPE_DECLARE (e) =
- {
- .format = "evt-enqueue: id %d length %d",
- .format_args = "i4i4",};
- struct
- {
- u32 data[2];
- } *ed;
- ed = ELOG_DATA (&vlib_global_main.elog_main, e);
- ed->data[0] = evt.event_id;
- ed->data[1] = svm_fifo_max_dequeue (s0->server_rx_fifo);
- }
- /* *INDENT-ON* */
+ errors = session_main_flush_all_enqueue_events (TRANSPORT_PROTO_UDP);
+ udp_input_inc_counter (vm, is_ip4, UDP_ERROR_EVENT_FIFO_FULL, errors);
+ return frame->n_vectors;
+}
- }
- vec_reset_length (session_indices_to_enqueue);
+static uword
+udp4_input (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return udp46_input_inline (vm, node, frame, 1);
+}
- smm->session_indices_to_enqueue_by_thread[my_thread_index] =
- session_indices_to_enqueue;
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (udp4_input_node) =
+{
+ .function = udp4_input,
+ .name = "udp4-input",
+ .vector_size = sizeof (u32),
+ .format_trace = format_udp_input_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN (udp_error_strings),
+ .error_strings = udp_error_strings,
+ .n_next_nodes = UDP_INPUT_N_NEXT,
+ .next_nodes = {
+#define _(s, n) [UDP_INPUT_NEXT_##s] = n,
+ foreach_udp_input_next
+#undef _
+ },
+};
+/* *INDENT-ON* */
- return frame->n_vectors;
+static uword
+udp6_input (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return udp46_input_inline (vm, node, frame, 0);
}
-VLIB_REGISTER_NODE (udp4_uri_input_node) =
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (udp6_input_node) =
{
- .function = udp4_uri_input_node_fn,.name = "udp4-uri-input",.vector_size =
- sizeof (u32),.format_trace = format_udp4_uri_input_trace,.type =
- VLIB_NODE_TYPE_INTERNAL,.n_errors =
- ARRAY_LEN (udp4_uri_input_error_strings),.error_strings =
- udp4_uri_input_error_strings,.n_next_nodes = UDP4_URI_INPUT_N_NEXT,
- /* edit / add dispositions here */
- .next_nodes =
- {
- [UDP4_URI_INPUT_NEXT_DROP] = "error-drop",}
-,};
+ .function = udp6_input,
+ .name = "udp6-input",
+ .vector_size = sizeof (u32),
+ .format_trace = format_udp_input_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN (udp_error_strings),
+ .error_strings = udp_error_strings,
+ .n_next_nodes = UDP_INPUT_N_NEXT,
+ .next_nodes = {
+#define _(s, n) [UDP_INPUT_NEXT_##s] = n,
+ foreach_udp_input_next
+#undef _
+ },
+};
+/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
Code Review / vpp.git / blobdiff