/*
- * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Copyright (c) 2017-2020 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:
#include <vnet/ip/ip.h>
#include <vnet/session/transport.h>
-typedef struct
-{
- transport_connection_t connection; /** must be first */
-
- /** ersatz MTU to limit fifo pushes to test data size */
- u32 mtu;
-} udp_connection_t;
-
-typedef struct _udp_uri_main
+typedef enum
{
- /* Per-worker thread udp connection pools */
- udp_connection_t **udp_sessions;
- udp_connection_t *udp_listeners;
-
- /* convenience */
- vlib_main_t *vlib_main;
- vnet_main_t *vnet_main;
- ip4_main_t *ip4_main;
- ip6_main_t *ip6_main;
-} udp_uri_main_t;
+#define udp_error(n,s) UDP_ERROR_##n,
+#include <vnet/udp/udp_error.def>
+#undef udp_error
+ UDP_N_ERROR,
+} udp_error_t;
-extern udp_uri_main_t udp_uri_main;
-extern vlib_node_registration_t udp4_uri_input_node;
+#define foreach_udp_connection_flag \
+ _(CONNECTED, "CONNECTED") /**< connected mode */ \
+ _(OWNS_PORT, "OWNS_PORT") /**< port belong to conn (UDPC) */ \
+ _(CLOSING, "CLOSING") /**< conn closed with data */ \
+ _(LISTEN, "LISTEN") /**< conn is listening */ \
+ _(MIGRATED, "MIGRATED") /**< cloned to another thread */ \
-always_inline udp_uri_main_t *
-vnet_get_udp_main ()
+enum udp_conn_flags_bits
{
- return &udp_uri_main;
-}
+#define _(sym, str) UDP_CONN_F_BIT_##sym,
+ foreach_udp_connection_flag
+#undef _
+ UDP_CONN_N_FLAGS
+};
-always_inline udp_connection_t *
-udp_connection_get (u32 conn_index, u32 thread_index)
+typedef enum udp_conn_flags_
{
- return pool_elt_at_index (udp_uri_main.udp_sessions[thread_index],
- conn_index);
-}
-
-always_inline udp_connection_t *
-udp_listener_get (u32 conn_index)
-{
- return pool_elt_at_index (udp_uri_main.udp_listeners, conn_index);
-}
+#define _(sym, str) UDP_CONN_F_##sym = 1 << UDP_CONN_F_BIT_##sym,
+ foreach_udp_connection_flag
+#undef _
+} udp_conn_flags_t;
-typedef enum
+typedef struct
{
-#define udp_error(n,s) UDP_ERROR_##n,
-#include <vnet/udp/udp_error.def>
-#undef udp_error
- UDP_N_ERROR,
-} udp_error_t;
+ /** Required for pool_get_aligned */
+ CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+ transport_connection_t connection; /**< must be first */
+ clib_spinlock_t rx_lock; /**< rx fifo lock */
+ u8 flags; /**< connection flags */
+ u16 mss; /**< connection mss */
+} udp_connection_t;
#define foreach_udp4_dst_port \
+_ (53, dns) \
_ (67, dhcp_to_server) \
_ (68, dhcp_to_client) \
_ (500, ikev2) \
_ (3785, bfd_echo4) \
_ (4341, lisp_gpe) \
_ (4342, lisp_cp) \
+_ (4500, ipsec) \
_ (4739, ipfix) \
_ (4789, vxlan) \
_ (4789, vxlan6) \
+_ (48879, vxlan_gbp) \
_ (4790, VXLAN_GPE) \
_ (6633, vpath_3) \
-_ (6081, geneve)
+_ (6081, geneve) \
+_ (53053, dns_reply)
#define foreach_udp6_dst_port \
+_ (53, dns6) \
_ (547, dhcpv6_to_server) \
_ (546, dhcpv6_to_client) \
_ (2152, GTPU6) \
_ (3785, bfd_echo6) \
_ (4341, lisp_gpe6) \
_ (4342, lisp_cp6) \
+_ (48879, vxlan6_gbp) \
_ (4790, VXLAN6_GPE) \
_ (6633, vpath6_3) \
-_ (6081, geneve6)
+_ (6081, geneve6) \
+_ (8138, BIER) \
+_ (53053, dns_reply6)
typedef enum
{
/* Name (a c string). */
char *name;
- /* GRE protocol type in host byte order. */
+ /* Port number in host byte order. */
udp_dst_port_t dst_port;
/* Node which handles this type. */
/* Next index for this type. */
u32 next_index;
+
+ /* UDP sessions refcount (not tunnels) */
+ u32 n_connections;
+
+ /* Parser for packet generator edits for this protocol */
+ unformat_function_t *unformat_pg_edit;
} udp_dst_port_info_t;
typedef enum
u8 punt_unknown4;
u8 punt_unknown6;
- /* convenience */
- vlib_main_t *vlib_main;
+ /* Udp local to input arc index */
+ u32 local_to_input_edge[N_UDP_AF];
+
+ /*
+ * Per-worker thread udp connection pools used with session layer
+ */
+ udp_connection_t **connections;
+ u32 *connection_peekers;
+ clib_spinlock_t *peekers_readers_locks;
+ clib_spinlock_t *peekers_write_locks;
+ udp_connection_t *listener_pool;
+
+ u16 default_mtu;
} udp_main_t;
+extern udp_main_t udp_main;
+extern vlib_node_registration_t udp4_input_node;
+extern vlib_node_registration_t udp6_input_node;
+extern vlib_node_registration_t udp4_local_node;
+extern vlib_node_registration_t udp6_local_node;
+
+always_inline udp_connection_t *
+udp_connection_get (u32 conn_index, u32 thread_index)
+{
+ if (pool_is_free_index (udp_main.connections[thread_index], conn_index))
+ return 0;
+ return pool_elt_at_index (udp_main.connections[thread_index], conn_index);
+}
+
+always_inline udp_connection_t *
+udp_listener_get (u32 conn_index)
+{
+ return pool_elt_at_index (udp_main.listener_pool, conn_index);
+}
+
+always_inline udp_main_t *
+vnet_get_udp_main ()
+{
+ return &udp_main;
+}
+
+always_inline udp_connection_t *
+udp_connection_from_transport (transport_connection_t * tc)
+{
+ return ((udp_connection_t *) tc);
+}
+
+always_inline u32
+udp_connection_index (udp_connection_t * uc)
+{
+ return (uc - udp_main.connections[uc->c_thread_index]);
+}
+
+void udp_connection_free (udp_connection_t * uc);
+udp_connection_t *udp_connection_alloc (u32 thread_index);
+
+/**
+ * Acquires a lock that blocks a connection pool from expanding.
+ */
+always_inline void
+udp_pool_add_peeker (u32 thread_index)
+{
+ if (thread_index != vlib_get_thread_index ())
+ return;
+ clib_spinlock_lock_if_init (&udp_main.peekers_readers_locks[thread_index]);
+ udp_main.connection_peekers[thread_index] += 1;
+ if (udp_main.connection_peekers[thread_index] == 1)
+ clib_spinlock_lock_if_init (&udp_main.peekers_write_locks[thread_index]);
+ clib_spinlock_unlock_if_init (&udp_main.peekers_readers_locks
+ [thread_index]);
+}
+
+always_inline void
+udp_pool_remove_peeker (u32 thread_index)
+{
+ if (thread_index != vlib_get_thread_index ())
+ return;
+ ASSERT (udp_main.connection_peekers[thread_index] > 0);
+ clib_spinlock_lock_if_init (&udp_main.peekers_readers_locks[thread_index]);
+ udp_main.connection_peekers[thread_index] -= 1;
+ if (udp_main.connection_peekers[thread_index] == 0)
+ clib_spinlock_unlock_if_init (&udp_main.peekers_write_locks
+ [thread_index]);
+ clib_spinlock_unlock_if_init (&udp_main.peekers_readers_locks
+ [thread_index]);
+}
+
+always_inline udp_connection_t *
+udp_connection_clone_safe (u32 connection_index, u32 thread_index)
+{
+ udp_connection_t *old_c, *new_c;
+ u32 current_thread_index = vlib_get_thread_index ();
+ new_c = udp_connection_alloc (current_thread_index);
+
+ /* If during the memcpy pool is reallocated AND the memory allocator
+ * decides to give the old chunk of memory to somebody in a hurry to
+ * scribble something on it, we have a problem. So add this thread as
+ * a session pool peeker.
+ */
+ udp_pool_add_peeker (thread_index);
+ old_c = udp_main.connections[thread_index] + connection_index;
+ clib_memcpy_fast (new_c, old_c, sizeof (*new_c));
+ old_c->flags |= UDP_CONN_F_MIGRATED;
+ udp_pool_remove_peeker (thread_index);
+ new_c->c_thread_index = current_thread_index;
+ new_c->c_c_index = udp_connection_index (new_c);
+ new_c->c_fib_index = old_c->c_fib_index;
+ return new_c;
+}
+
always_inline udp_dst_port_info_t *
udp_get_dst_port_info (udp_main_t * um, udp_dst_port_t dst_port, u8 is_ip4)
{
format_function_t format_udp_header;
format_function_t format_udp_rx_trace;
-
+format_function_t format_udp_connection;
unformat_function_t unformat_udp_header;
+void udp_add_dst_port (udp_main_t * um, udp_dst_port_t dst_port,
+ char *dst_port_name, u8 is_ip4);
void udp_register_dst_port (vlib_main_t * vm,
udp_dst_port_t dst_port,
u32 node_index, u8 is_ip4);
-
-void
-udp_unregister_dst_port (vlib_main_t * vm,
- udp_dst_port_t dst_port, u8 is_ip4);
+void udp_unregister_dst_port (vlib_main_t * vm,
+ udp_dst_port_t dst_port, u8 is_ip4);
+bool udp_is_valid_dst_port (udp_dst_port_t dst_port, u8 is_ip4);
+void udp_connection_share_port (u16 lcl_port, u8 is_ip4);
void udp_punt_unknown (vlib_main_t * vm, u8 is_ip4, u8 is_add);
+always_inline void *
+vlib_buffer_push_udp (vlib_buffer_t * b, u16 sp, u16 dp, u8 offload_csum)
+{
+ udp_header_t *uh;
+ u16 udp_len = sizeof (udp_header_t) + b->current_length;
+ if (PREDICT_FALSE (b->flags & VLIB_BUFFER_TOTAL_LENGTH_VALID))
+ udp_len += b->total_length_not_including_first_buffer;
+
+ uh = vlib_buffer_push_uninit (b, sizeof (udp_header_t));
+ uh->src_port = sp;
+ uh->dst_port = dp;
+ uh->checksum = 0;
+ uh->length = clib_host_to_net_u16 (udp_len);
+ if (offload_csum)
+ b->flags |= VNET_BUFFER_F_OFFLOAD_UDP_CKSUM;
+ vnet_buffer (b)->l4_hdr_offset = (u8 *) uh - b->data;
+ b->flags |= VNET_BUFFER_F_L4_HDR_OFFSET_VALID;
+ return uh;
+}
+
always_inline void
ip_udp_fixup_one (vlib_main_t * vm, vlib_buffer_t * b0, u8 is_ip4)
{
ip0 = vlib_buffer_get_current (b0);
/* Apply the encap string. */
- clib_memcpy (ip0, ec0, ec_len);
+ clib_memcpy_fast (ip0, ec0, ec_len);
ip_udp_fixup_one (vm, b0, 1);
}
else
ip0 = vlib_buffer_get_current (b0);
/* Apply the encap string. */
- clib_memcpy (ip0, ec0, ec_len);
+ clib_memcpy_fast (ip0, ec0, ec_len);
ip_udp_fixup_one (vm, b0, 0);
}
}
ip1 = vlib_buffer_get_current (b1);
/* Apply the encap string */
- clib_memcpy (ip0, ec0, ec_len);
- clib_memcpy (ip1, ec1, ec_len);
+ clib_memcpy_fast (ip0, ec0, ec_len);
+ clib_memcpy_fast (ip1, ec1, ec_len);
/* fix the <bleep>ing outer-IP checksum */
sum0 = ip0->checksum;
ip1 = vlib_buffer_get_current (b1);
/* Apply the encap string. */
- clib_memcpy (ip0, ec0, ec_len);
- clib_memcpy (ip1, ec1, ec_len);
+ clib_memcpy_fast (ip0, ec0, ec_len);
+ clib_memcpy_fast (ip1, ec1, ec_len);
new_l0 = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0)
- sizeof (*ip0));
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