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authorVladimir Ratnikov <vratnikov@netgate.com>2020-08-14 08:25:30 -0400
committerVladimir Ratnikov <vratnikov@netgate.com>2020-08-27 08:25:56 +0000
commited04407829728c5d258b6600155edabd5198d971 (patch)
tree575053762ee9c5722cd797e4979208dfe66ea02a /src/cmake/cpu.cmake
parenta3b7c554c669afc627f9a1e32666211bb6fb6b25 (diff)
dpdk: fix blacklists
When we have both format blacklisted devices like: blacklist 1234:5678 blacklist 1234:56:78.0 unformat with fmt=%x:%x matches for both strings and the rest 78.0 substring is kept in input and it can't be parsed for init args This patch checks first if device format matches PCI address and just then if it matches Vendor and Product Type: fix Change-Id: If111762c0e0a424b052e4f6dc0f67731bf89dc2a Signed-off-by: Vladimir Ratnikov <vratnikov@netgate.com>
Diffstat (limited to 'src/cmake/cpu.cmake')
0 files changed, 0 insertions, 0 deletions
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/*
 * Copyright (c) 2016-2020 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:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <vnet/udp/udp.h>
#include <vnet/session/session.h>
#include <vnet/dpo/load_balance.h>
#include <vnet/ip/ip4_inlines.h>
#include <vnet/ip/ip6_inlines.h>
#include <vppinfra/sparse_vec.h>

udp_main_t udp_main;

static void
udp_connection_register_port (vlib_main_t * vm, u16 lcl_port, u8 is_ip4)
{
  udp_main_t *um = &udp_main;
  udp_dst_port_info_t *pi;
  u16 *n;

  pi = udp_get_dst_port_info (um, lcl_port, is_ip4);
  if (!pi)
    {
      udp_add_dst_port (um, lcl_port, 0, is_ip4);
      pi = udp_get_dst_port_info (um, lcl_port, is_ip4);
      pi->n_connections = 1;
    }
  else
    {
      pi->n_connections += 1;
      /* Do not return. The fact that the pi is valid does not mean
       * it's up to date */
    }

  pi->node_index = is_ip4 ? udp4_input_node.index : udp6_input_node.index;
  pi->next_index = um->local_to_input_edge[is_ip4];

  /* Setup udp protocol -> next index sparse vector mapping. */
  if (is_ip4)
    n = sparse_vec_validate (um->next_by_dst_port4,
			     clib_host_to_net_u16 (lcl_port));
  else
    n = sparse_vec_validate (um->next_by_dst_port6,
			     clib_host_to_net_u16 (lcl_port));

  n[0] = pi->next_index;
}

static void
udp_connection_unregister_port (u16 lcl_port, u8 is_ip4)
{
  udp_main_t *um = &udp_main;
  udp_dst_port_info_t *pi;

  pi = udp_get_dst_port_info (um, lcl_port, is_ip4);
  if (!pi)
    return;

  if (!pi->n_connections)
    {
      clib_warning ("no connections using port %u", lcl_port);
      return;
    }

  if (!clib_atomic_sub_fetch (&pi->n_connections, 1))
    udp_unregister_dst_port (0, lcl_port, is_ip4);
}

void
udp_connection_share_port (u16 lcl_port, u8 is_ip4)
{
  udp_main_t *um = &udp_main;
  udp_dst_port_info_t *pi;

  /* Done without a lock but the operation is atomic. Writers to pi hash
   * table and vector should be guarded by a barrier sync */
  pi = udp_get_dst_port_info (um, lcl_port, is_ip4);
  clib_atomic_fetch_add_rel (&pi->n_connections, 1);
}

udp_connection_t *
udp_connection_alloc (u32 thread_index)
{
  udp_main_t *um = &udp_main;
  udp_connection_t *uc;
  u32 will_expand = 0;
  pool_get_aligned_will_expand (um->connections[thread_index], will_expand,
				CLIB_CACHE_LINE_BYTES);

  if (PREDICT_FALSE (will_expand))
    {
      clib_spinlock_lock_if_init (&udp_main.peekers_write_locks
				  [thread_index]);
      pool_get_aligned (udp_main.connections[thread_index], uc,
			CLIB_CACHE_LINE_BYTES);
      clib_spinlock_unlock_if_init (&udp_main.peekers_write_locks
				    [thread_index]);
    }
  else
    {
      pool_get_aligned (um->connections[thread_index], uc,
			CLIB_CACHE_LINE_BYTES);
    }
  clib_memset (uc, 0, sizeof (*uc));
  uc->c_c_index = uc - um->connections[thread_index];
  uc->c_thread_index = thread_index;
  uc->c_proto = TRANSPORT_PROTO_UDP;
  return uc;
}

void
udp_connection_free (udp_connection_t * uc)
{
  u32 thread_index = uc->c_thread_index;
  clib_spinlock_free (&uc->rx_lock);
  if (CLIB_DEBUG)
    clib_memset (uc, 0xFA, sizeof (*uc));
  pool_put (udp_main.connections[thread_index], uc);
}

static void
udp_connection_cleanup (udp_connection_t * uc)
{
  transport_endpoint_cleanup (TRANSPORT_PROTO_UDP, &uc->c_lcl_ip,
			      uc->c_lcl_port);
  udp_connection_unregister_port (clib_net_to_host_u16 (uc->c_lcl_port),
				  uc->c_is_ip4);
  udp_connection_free (uc);
}

void
udp_connection_delete (udp_connection_t * uc)
{
  session_transport_delete_notify (&uc->connection);
  udp_connection_cleanup (uc);
}

static u8
udp_connection_port_used_extern (u16 lcl_port, u8 is_ip4)
{
  udp_main_t *um = vnet_get_udp_main ();
  udp_dst_port_info_t *pi;

  pi = udp_get_dst_port_info (um, lcl_port, is_ip4);
  return (pi && !pi->n_connections
	  && udp_is_valid_dst_port (lcl_port, is_ip4));
}

static u16
udp_default_mtu (udp_main_t * um, u8 is_ip4)
{
  u16 ip_hlen = is_ip4 ? sizeof (ip4_header_t) : sizeof (ip6_header_t);
  return (um->default_mtu - sizeof (udp_header_t) - ip_hlen);
}

static u32
udp_session_bind (u32 session_index, transport_endpoint_t * lcl)
{
  udp_main_t *um = vnet_get_udp_main ();
  vlib_main_t *vm = vlib_get_main ();
  transport_endpoint_cfg_t *lcl_ext;
  udp_connection_t *listener;
  u16 lcl_port_ho;
  void *iface_ip;

  lcl_port_ho = clib_net_to_host_u16 (lcl->port);

  if (udp_connection_port_used_extern (lcl_port_ho, lcl->is_ip4))
    {
      clib_warning ("port already used");
      return SESSION_E_PORTINUSE;
    }

  pool_get (um->listener_pool, listener);
  clib_memset (listener, 0, sizeof (udp_connection_t));

  listener->c_lcl_port = lcl->port;
  listener->c_c_index = listener - um->listener_pool;

  /* If we are provided a sw_if_index, bind using one of its ips */
  if (ip_is_zero (&lcl->ip, 1) && lcl->sw_if_index != ENDPOINT_INVALID_INDEX)
    {
      if ((iface_ip = ip_interface_get_first_ip (lcl->sw_if_index,
						 lcl->is_ip4)))
	ip_set (&lcl->ip, iface_ip, lcl->is_ip4);
    }
  ip_copy (&listener->c_lcl_ip, &lcl->ip, lcl->is_ip4);
  listener->c_is_ip4 = lcl->is_ip4;
  listener->c_proto = TRANSPORT_PROTO_UDP;
  listener->c_s_index = session_index;
  listener->c_fib_index = lcl->fib_index;
  listener->mss = udp_default_mtu (um, listener->c_is_ip4);
  listener->flags |= UDP_CONN_F_OWNS_PORT | UDP_CONN_F_LISTEN;
  lcl_ext = (transport_endpoint_cfg_t *) lcl;
  if (lcl_ext->transport_flags & TRANSPORT_CFG_F_CONNECTED)
    listener->flags |= UDP_CONN_F_CONNECTED;
  else
    listener->c_flags |= TRANSPORT_CONNECTION_F_CLESS;
  clib_spinlock_init (&listener->rx_lock);

  udp_connection_register_port (vm, lcl_port_ho, lcl->is_ip4);
  return listener->c_c_index;
}

static u32
udp_session_unbind (u32 listener_index)
{
  udp_main_t *um = &udp_main;
  udp_connection_t *listener;

  listener = udp_listener_get (listener_index);
  udp_connection_unregister_port (clib_net_to_host_u16 (listener->c_lcl_port),
				  listener->c_is_ip4);
  clib_spinlock_free (&listener->rx_lock);
  pool_put (um->listener_pool, listener);
  return 0;
}

static transport_connection_t *
udp_session_get_listener (u32 listener_index)
{
  udp_connection_t *us;

  us = udp_listener_get (listener_index);
  return &us->connection;
}

always_inline u32
udp_push_one_header (vlib_main_t *vm, udp_connection_t *uc, vlib_buffer_t *b)
{
  vlib_buffer_push_udp (b, uc->c_lcl_port, uc->c_rmt_port, 1);
  if (uc->c_is_ip4)
    vlib_buffer_push_ip4_custom (vm, b, &uc->c_lcl_ip4, &uc->c_rmt_ip4,
				 IP_PROTOCOL_UDP, 1 /* csum offload */,
				 0 /* is_df */, uc->c_dscp);
  else
    vlib_buffer_push_ip6 (vm, b, &uc->c_lcl_ip6, &uc->c_rmt_ip6,
			  IP_PROTOCOL_UDP);
  vnet_buffer (b)->sw_if_index[VLIB_RX] = 0;
  vnet_buffer (b)->sw_if_index[VLIB_TX] = uc->c_fib_index;
  b->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;

  return 0;
}

static u32
udp_push_header (transport_connection_t *tc, vlib_buffer_t **bs, u32 n_bufs)
{
  vlib_main_t *vm = vlib_get_main ();
  udp_connection_t *uc;

  uc = udp_connection_from_transport (tc);

  while (n_bufs >= 4)
    {
      vlib_prefetch_buffer_header (bs[2], STORE);
      vlib_prefetch_buffer_header (bs[3], STORE);

      udp_push_one_header (vm, uc, bs[0]);
      udp_push_one_header (vm, uc, bs[1]);

      n_bufs -= 2;
      bs += 2;
    }
  while (n_bufs)
    {
      if (n_bufs > 1)
	vlib_prefetch_buffer_header (bs[1], STORE);

      udp_push_one_header (vm, uc, bs[0]);

      n_bufs -= 1;
      bs += 1;
    }

  if (PREDICT_FALSE (uc->flags & UDP_CONN_F_CLOSING))
    {
      if (!transport_max_tx_dequeue (&uc->connection))
	udp_connection_delete (uc);
    }

  return 0;
}

static transport_connection_t *
udp_session_get (u32 connection_index, u32 thread_index)
{
  udp_connection_t *uc;
  uc = udp_connection_get (connection_index, thread_index);
  if (uc)
    return &uc->connection;
  return 0;
}

static void
udp_session_close (u32 connection_index, u32 thread_index)
{
  udp_connection_t *uc;

  uc = udp_connection_get (connection_index, thread_index);
  if (!uc || (uc->flags & UDP_CONN_F_MIGRATED))
    return;

  if (!transport_max_tx_dequeue (&uc->connection))
    udp_connection_delete (uc);
  else
    uc->flags |= UDP_CONN_F_CLOSING;
}

static void
udp_session_cleanup (u32 connection_index, u32 thread_index)
{
  udp_connection_t *uc;
  uc = udp_connection_get (connection_index, thread_index);
  if (!uc)
    return;
  if (uc->flags & UDP_CONN_F_MIGRATED)
    udp_connection_free (uc);
  else
    udp_connection_cleanup (uc);
}

static int
udp_session_send_params (transport_connection_t * tconn,
			 transport_send_params_t * sp)
{
  udp_connection_t *uc;

  uc = udp_connection_from_transport (tconn);

  /* No constraint on TX window */
  sp->snd_space = ~0;
  /* TODO figure out MTU of output interface */
  sp->snd_mss = uc->mss;
  sp->tx_offset = 0;
  sp->flags = 0;
  return 0;
}

static int
udp_open_connection (transport_endpoint_cfg_t * rmt)
{
  vlib_main_t *vm = vlib_get_main ();
  u32 thread_index = vm->thread_index;
  udp_main_t *um = &udp_main;
  ip46_address_t lcl_addr;
  udp_connection_t *uc;
  u16 lcl_port;
  int rv;

  rv = transport_alloc_local_endpoint (TRANSPORT_PROTO_UDP, rmt, &lcl_addr,
				       &lcl_port);
  if (rv)
    {
      if (rv != SESSION_E_PORTINUSE)
	return rv;

      if (udp_connection_port_used_extern (lcl_port, rmt->is_ip4))
	return SESSION_E_PORTINUSE;

      /* If port in use, check if 5-tuple is also in use */
      if (session_lookup_connection (rmt->fib_index, &lcl_addr, &rmt->ip,
				     lcl_port, rmt->port, TRANSPORT_PROTO_UDP,
				     rmt->is_ip4))
	return SESSION_E_PORTINUSE;

      /* 5-tuple is available so increase lcl endpoint refcount and proceed
       * with connection allocation */
      transport_share_local_endpoint (TRANSPORT_PROTO_UDP, &lcl_addr,
				      lcl_port);
      goto conn_alloc;
    }

  if (udp_is_valid_dst_port (lcl_port, rmt->is_ip4))
    {
      /* If specific source port was requested abort */
      if (rmt->peer.port)
	return SESSION_E_PORTINUSE;

      /* Try to find a port that's not used */
      while (udp_is_valid_dst_port (lcl_port, rmt->is_ip4))
	{
	  lcl_port = transport_alloc_local_port (TRANSPORT_PROTO_UDP,
						 &lcl_addr);
	  if (lcl_port < 1)
	    return SESSION_E_PORTINUSE;
	}
    }

conn_alloc:

  udp_connection_register_port (vm, lcl_port, rmt->is_ip4);

  /* We don't poll main thread if we have workers */
  thread_index = transport_cl_thread ();

  uc = udp_connection_alloc (thread_index);
  ip_copy (&uc->c_rmt_ip, &rmt->ip, rmt->is_ip4);
  ip_copy (&uc->c_lcl_ip, &lcl_addr, rmt->is_ip4);
  uc->c_rmt_port = rmt->port;
  uc->c_lcl_port = clib_host_to_net_u16 (lcl_port);
  uc->c_is_ip4 = rmt->is_ip4;
  uc->c_proto = TRANSPORT_PROTO_UDP;
  uc->c_fib_index = rmt->fib_index;
  uc->c_dscp = rmt->dscp;
  uc->mss = rmt->mss ? rmt->mss : udp_default_mtu (um, uc->c_is_ip4);
  uc->flags |= UDP_CONN_F_OWNS_PORT;
  if (rmt->transport_flags & TRANSPORT_CFG_F_CONNECTED)
    {
      uc->flags |= UDP_CONN_F_CONNECTED;
    }
  else
    {
      clib_spinlock_init (&uc->rx_lock);
      uc->c_flags |= TRANSPORT_CONNECTION_F_CLESS;
    }

  return uc->c_c_index;
}

static transport_connection_t *
udp_session_get_half_open (u32 conn_index)
{
  udp_connection_t *uc;
  u32 thread_index;

  /* We don't poll main thread if we have workers */
  thread_index = transport_cl_thread ();
  uc = udp_connection_get (conn_index, thread_index);
  if (!uc)
    return 0;
  return &uc->connection;
}

static u8 *
format_udp_session (u8 * s, va_list * args)
{
  u32 uci = va_arg (*args, u32);
  u32 thread_index = va_arg (*args, u32);
  u32 verbose = va_arg (*args, u32);
  udp_connection_t *uc;

  uc = udp_connection_get (uci, thread_index);
  return format (s, "%U", format_udp_connection, uc, verbose);
}

static u8 *
format_udp_half_open_session (u8 * s, va_list * args)
{
  u32 __clib_unused tci = va_arg (*args, u32);
  u32 __clib_unused thread_index = va_arg (*args, u32);
  clib_warning ("BUG");
  return 0;
}

static u8 *
format_udp_listener_session (u8 * s, va_list * args)
{
  u32 tci = va_arg (*args, u32);
  u32 __clib_unused thread_index = va_arg (*args, u32);
  u32 verbose = va_arg (*args, u32);
  udp_connection_t *uc = udp_listener_get (tci);
  return format (s, "%U", format_udp_connection, uc, verbose);
}

/* *INDENT-OFF* */
static const transport_proto_vft_t udp_proto = {
  .start_listen = udp_session_bind,
  .connect = udp_open_connection,
  .stop_listen = udp_session_unbind,
  .push_header = udp_push_header,
  .get_connection = udp_session_get,
  .get_listener = udp_session_get_listener,
  .get_half_open = udp_session_get_half_open,
  .close = udp_session_close,
  .cleanup = udp_session_cleanup,
  .send_params = udp_session_send_params,
  .format_connection = format_udp_session,
  .format_half_open = format_udp_half_open_session,
  .format_listener = format_udp_listener_session,
  .transport_options = {
    .name = "udp",
    .short_name = "U",
    .tx_type = TRANSPORT_TX_DGRAM,
    .service_type = TRANSPORT_SERVICE_CL,
  },
};
/* *INDENT-ON* */

static clib_error_t *
udp_init (vlib_main_t * vm)
{
  udp_main_t *um = vnet_get_udp_main ();
  ip_main_t *im = &ip_main;
  vlib_thread_main_t *tm = vlib_get_thread_main ();
  u32 num_threads;
  ip_protocol_info_t *pi;
  int i;

  /*
   * Registrations
   */

  /* IP registration */
  pi = ip_get_protocol_info (im, IP_PROTOCOL_UDP);
  if (pi == 0)
    return clib_error_return (0, "UDP protocol info AWOL");
  pi->format_header = format_udp_header;
  pi->unformat_pg_edit = unformat_pg_udp_header;

  /* Register as transport with URI */
  transport_register_protocol (TRANSPORT_PROTO_UDP, &udp_proto,
			       FIB_PROTOCOL_IP4, ip4_lookup_node.index);
  transport_register_protocol (TRANSPORT_PROTO_UDP, &udp_proto,
			       FIB_PROTOCOL_IP6, ip6_lookup_node.index);

  /*
   * Initialize data structures
   */

  num_threads = 1 /* main thread */  + tm->n_threads;
  vec_validate (um->connections, num_threads - 1);
  vec_validate (um->connection_peekers, num_threads - 1);
  vec_validate (um->peekers_readers_locks, num_threads - 1);
  vec_validate (um->peekers_write_locks, num_threads - 1);

  if (num_threads > 1)
    for (i = 0; i < num_threads; i++)
      {
	clib_spinlock_init (&um->peekers_readers_locks[i]);
	clib_spinlock_init (&um->peekers_write_locks[i]);
      }

  um->local_to_input_edge[UDP_IP4] =
    vlib_node_add_next (vm, udp4_local_node.index, udp4_input_node.index);
  um->local_to_input_edge[UDP_IP6] =
    vlib_node_add_next (vm, udp6_local_node.index, udp6_input_node.index);

  um->default_mtu = 1500;
  return 0;
}

/* *INDENT-OFF* */
VLIB_INIT_FUNCTION (udp_init) =
{
  .runs_after = VLIB_INITS("ip_main_init", "ip4_lookup_init",
                           "ip6_lookup_init"),
};
/* *INDENT-ON* */

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */