blob: d449fb91d44cdc500c5f6491694a8c865e8a83dc [file] [log] [blame]
/*
* Copyright (c) 2017-2019 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this
* 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 <stdio.h>
#include <stdlib.h>
#include <vcl/vppcom.h>
#include <vcl/vcl_debug.h>
#include <vcl/vcl_private.h>
#include <svm/fifo_segment.h>
__thread uword __vcl_worker_index = ~0;
static int
vcl_wait_for_segment (u64 segment_handle)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
u32 wait_for_seconds = 10, segment_index;
f64 timeout;
if (segment_handle == VCL_INVALID_SEGMENT_HANDLE)
return 0;
timeout = clib_time_now (&wrk->clib_time) + wait_for_seconds;
while (clib_time_now (&wrk->clib_time) < timeout)
{
segment_index = vcl_segment_table_lookup (segment_handle);
if (segment_index != VCL_INVALID_SEGMENT_INDEX)
return 0;
usleep (10);
}
return 1;
}
static inline int
vcl_mq_dequeue_batch (vcl_worker_t * wrk, svm_msg_q_t * mq, u32 n_max_msg)
{
svm_msg_q_msg_t *msg;
u32 n_msgs;
int i;
n_msgs = clib_min (svm_msg_q_size (mq), n_max_msg);
for (i = 0; i < n_msgs; i++)
{
vec_add2 (wrk->mq_msg_vector, msg, 1);
svm_msg_q_sub_w_lock (mq, msg);
}
return n_msgs;
}
const char *
vppcom_session_state_str (vcl_session_state_t state)
{
char *st;
switch (state)
{
case STATE_START:
st = "STATE_START";
break;
case STATE_CONNECT:
st = "STATE_CONNECT";
break;
case STATE_LISTEN:
st = "STATE_LISTEN";
break;
case STATE_ACCEPT:
st = "STATE_ACCEPT";
break;
case STATE_VPP_CLOSING:
st = "STATE_VPP_CLOSING";
break;
case STATE_DISCONNECT:
st = "STATE_DISCONNECT";
break;
case STATE_FAILED:
st = "STATE_FAILED";
break;
case STATE_UPDATED:
st = "STATE_UPDATED";
break;
case STATE_LISTEN_NO_MQ:
st = "STATE_LISTEN_NO_MQ";
break;
default:
st = "UNKNOWN_STATE";
break;
}
return st;
}
u8 *
format_ip4_address (u8 * s, va_list * args)
{
u8 *a = va_arg (*args, u8 *);
return format (s, "%d.%d.%d.%d", a[0], a[1], a[2], a[3]);
}
u8 *
format_ip6_address (u8 * s, va_list * args)
{
ip6_address_t *a = va_arg (*args, ip6_address_t *);
u32 i, i_max_n_zero, max_n_zeros, i_first_zero, n_zeros, last_double_colon;
i_max_n_zero = ARRAY_LEN (a->as_u16);
max_n_zeros = 0;
i_first_zero = i_max_n_zero;
n_zeros = 0;
for (i = 0; i < ARRAY_LEN (a->as_u16); i++)
{
u32 is_zero = a->as_u16[i] == 0;
if (is_zero && i_first_zero >= ARRAY_LEN (a->as_u16))
{
i_first_zero = i;
n_zeros = 0;
}
n_zeros += is_zero;
if ((!is_zero && n_zeros > max_n_zeros)
|| (i + 1 >= ARRAY_LEN (a->as_u16) && n_zeros > max_n_zeros))
{
i_max_n_zero = i_first_zero;
max_n_zeros = n_zeros;
i_first_zero = ARRAY_LEN (a->as_u16);
n_zeros = 0;
}
}
last_double_colon = 0;
for (i = 0; i < ARRAY_LEN (a->as_u16); i++)
{
if (i == i_max_n_zero && max_n_zeros > 1)
{
s = format (s, "::");
i += max_n_zeros - 1;
last_double_colon = 1;
}
else
{
s = format (s, "%s%x",
(last_double_colon || i == 0) ? "" : ":",
clib_net_to_host_u16 (a->as_u16[i]));
last_double_colon = 0;
}
}
return s;
}
/* Format an IP46 address. */
u8 *
format_ip46_address (u8 * s, va_list * args)
{
ip46_address_t *ip46 = va_arg (*args, ip46_address_t *);
ip46_type_t type = va_arg (*args, ip46_type_t);
int is_ip4 = 1;
switch (type)
{
case IP46_TYPE_ANY:
is_ip4 = ip46_address_is_ip4 (ip46);
break;
case IP46_TYPE_IP4:
is_ip4 = 1;
break;
case IP46_TYPE_IP6:
is_ip4 = 0;
break;
}
return is_ip4 ?
format (s, "%U", format_ip4_address, &ip46->ip4) :
format (s, "%U", format_ip6_address, &ip46->ip6);
}
/*
* VPPCOM Utility Functions
*/
static void
vcl_send_session_accepted_reply (svm_msg_q_t * mq, u32 context,
session_handle_t handle, int retval)
{
app_session_evt_t _app_evt, *app_evt = &_app_evt;
session_accepted_reply_msg_t *rmp;
app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_ACCEPTED_REPLY);
rmp = (session_accepted_reply_msg_t *) app_evt->evt->data;
rmp->handle = handle;
rmp->context = context;
rmp->retval = retval;
app_send_ctrl_evt_to_vpp (mq, app_evt);
}
static void
vcl_send_session_disconnected_reply (svm_msg_q_t * mq, u32 context,
session_handle_t handle, int retval)
{
app_session_evt_t _app_evt, *app_evt = &_app_evt;
session_disconnected_reply_msg_t *rmp;
app_alloc_ctrl_evt_to_vpp (mq, app_evt,
SESSION_CTRL_EVT_DISCONNECTED_REPLY);
rmp = (session_disconnected_reply_msg_t *) app_evt->evt->data;
rmp->handle = handle;
rmp->context = context;
rmp->retval = retval;
app_send_ctrl_evt_to_vpp (mq, app_evt);
}
static void
vcl_send_session_reset_reply (svm_msg_q_t * mq, u32 context,
session_handle_t handle, int retval)
{
app_session_evt_t _app_evt, *app_evt = &_app_evt;
session_reset_reply_msg_t *rmp;
app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_RESET_REPLY);
rmp = (session_reset_reply_msg_t *) app_evt->evt->data;
rmp->handle = handle;
rmp->context = context;
rmp->retval = retval;
app_send_ctrl_evt_to_vpp (mq, app_evt);
}
void
vcl_send_session_worker_update (vcl_worker_t * wrk, vcl_session_t * s,
u32 wrk_index)
{
app_session_evt_t _app_evt, *app_evt = &_app_evt;
session_worker_update_msg_t *mp;
svm_msg_q_t *mq;
mq = vcl_session_vpp_evt_q (wrk, s);
app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_WORKER_UPDATE);
mp = (session_worker_update_msg_t *) app_evt->evt->data;
mp->client_index = wrk->my_client_index;
mp->handle = s->vpp_handle;
mp->req_wrk_index = wrk->vpp_wrk_index;
mp->wrk_index = wrk_index;
app_send_ctrl_evt_to_vpp (mq, app_evt);
}
static u32
vcl_session_accepted_handler (vcl_worker_t * wrk, session_accepted_msg_t * mp,
u32 ls_index)
{
vcl_session_t *session, *listen_session;
svm_fifo_t *rx_fifo, *tx_fifo;
u32 vpp_wrk_index;
svm_msg_q_t *evt_q;
session = vcl_session_alloc (wrk);
listen_session = vcl_session_get (wrk, ls_index);
if (listen_session->vpp_handle != mp->listener_handle)
{
VDBG (0, "ERROR: listener handle %lu does not match session %u",
mp->listener_handle, ls_index);
goto error;
}
if (vcl_wait_for_segment (mp->segment_handle))
{
VDBG (0, "ERROR: segment for session %u couldn't be mounted!",
session->session_index);
goto error;
}
rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *);
tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *);
session->vpp_evt_q = uword_to_pointer (mp->vpp_event_queue_address,
svm_msg_q_t *);
rx_fifo->client_session_index = session->session_index;
tx_fifo->client_session_index = session->session_index;
rx_fifo->client_thread_index = vcl_get_worker_index ();
tx_fifo->client_thread_index = vcl_get_worker_index ();
vpp_wrk_index = tx_fifo->master_thread_index;
vec_validate (wrk->vpp_event_queues, vpp_wrk_index);
wrk->vpp_event_queues[vpp_wrk_index] = session->vpp_evt_q;
session->vpp_handle = mp->handle;
session->vpp_thread_index = rx_fifo->master_thread_index;
session->rx_fifo = rx_fifo;
session->tx_fifo = tx_fifo;
session->session_state = STATE_ACCEPT;
session->transport.rmt_port = mp->rmt.port;
session->transport.is_ip4 = mp->rmt.is_ip4;
clib_memcpy_fast (&session->transport.rmt_ip, &mp->rmt.ip,
sizeof (ip46_address_t));
vcl_session_table_add_vpp_handle (wrk, mp->handle, session->session_index);
session->transport.lcl_port = listen_session->transport.lcl_port;
session->transport.lcl_ip = listen_session->transport.lcl_ip;
session->session_type = listen_session->session_type;
session->is_dgram = vcl_proto_is_dgram (session->session_type);
session->listener_index = listen_session->session_index;
listen_session->n_accepted_sessions++;
VDBG (1, "session %u [0x%llx]: client accept request from %s address %U"
" port %d queue %p!", session->session_index, mp->handle,
mp->rmt.is_ip4 ? "IPv4" : "IPv6", format_ip46_address, &mp->rmt.ip,
mp->rmt.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
clib_net_to_host_u16 (mp->rmt.port), session->vpp_evt_q);
vcl_evt (VCL_EVT_ACCEPT, session, listen_session, session_index);
vcl_send_session_accepted_reply (session->vpp_evt_q, mp->context,
session->vpp_handle, 0);
return session->session_index;
error:
evt_q = uword_to_pointer (mp->vpp_event_queue_address, svm_msg_q_t *);
vcl_send_session_accepted_reply (evt_q, mp->context, mp->handle,
VNET_API_ERROR_INVALID_ARGUMENT);
vcl_session_free (wrk, session);
return VCL_INVALID_SESSION_INDEX;
}
static u32
vcl_session_connected_handler (vcl_worker_t * wrk,
session_connected_msg_t * mp)
{
u32 session_index, vpp_wrk_index;
svm_fifo_t *rx_fifo, *tx_fifo;
vcl_session_t *session = 0;
session_index = mp->context;
session = vcl_session_get (wrk, session_index);
if (!session)
{
VDBG (0, "ERROR: vpp handle 0x%llx has no session index (%u)!",
mp->handle, session_index);
return VCL_INVALID_SESSION_INDEX;
}
if (mp->retval)
{
VDBG (0, "ERROR: session index %u: connect failed! %U",
session_index, format_api_error, ntohl (mp->retval));
session->session_state = STATE_FAILED;
session->vpp_handle = mp->handle;
return session_index;
}
rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *);
tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *);
if (vcl_wait_for_segment (mp->segment_handle))
{
VDBG (0, "segment for session %u couldn't be mounted!",
session->session_index);
session->session_state = STATE_FAILED;
return VCL_INVALID_SESSION_INDEX;
}
rx_fifo->client_session_index = session_index;
tx_fifo->client_session_index = session_index;
rx_fifo->client_thread_index = vcl_get_worker_index ();
tx_fifo->client_thread_index = vcl_get_worker_index ();
session->vpp_evt_q = uword_to_pointer (mp->vpp_event_queue_address,
svm_msg_q_t *);
vpp_wrk_index = tx_fifo->master_thread_index;
vec_validate (wrk->vpp_event_queues, vpp_wrk_index);
wrk->vpp_event_queues[vpp_wrk_index] = session->vpp_evt_q;
if (mp->ct_rx_fifo)
{
session->ct_rx_fifo = uword_to_pointer (mp->ct_rx_fifo, svm_fifo_t *);
session->ct_tx_fifo = uword_to_pointer (mp->ct_tx_fifo, svm_fifo_t *);
if (vcl_wait_for_segment (mp->ct_segment_handle))
{
VDBG (0, "ct segment for session %u couldn't be mounted!",
session->session_index);
session->session_state = STATE_FAILED;
return VCL_INVALID_SESSION_INDEX;
}
}
session->rx_fifo = rx_fifo;
session->tx_fifo = tx_fifo;
session->vpp_handle = mp->handle;
session->vpp_thread_index = rx_fifo->master_thread_index;
session->transport.is_ip4 = mp->lcl.is_ip4;
clib_memcpy_fast (&session->transport.lcl_ip, &mp->lcl.ip,
sizeof (session->transport.lcl_ip));
session->transport.lcl_port = mp->lcl.port;
session->session_state = STATE_CONNECT;
/* Add it to lookup table */
vcl_session_table_add_vpp_handle (wrk, mp->handle, session_index);
VDBG (1, "session %u [0x%llx] connected! rx_fifo %p, refcnt %d, tx_fifo %p,"
" refcnt %d", session_index, mp->handle, session->rx_fifo,
session->rx_fifo->refcnt, session->tx_fifo, session->tx_fifo->refcnt);
return session_index;
}
static int
vcl_flag_accepted_session (vcl_session_t * session, u64 handle, u32 flags)
{
vcl_session_msg_t *accepted_msg;
int i;
for (i = 0; i < vec_len (session->accept_evts_fifo); i++)
{
accepted_msg = &session->accept_evts_fifo[i];
if (accepted_msg->accepted_msg.handle == handle)
{
accepted_msg->flags |= flags;
return 1;
}
}
return 0;
}
static u32
vcl_session_reset_handler (vcl_worker_t * wrk,
session_reset_msg_t * reset_msg)
{
vcl_session_t *session;
u32 sid;
sid = vcl_session_index_from_vpp_handle (wrk, reset_msg->handle);
session = vcl_session_get (wrk, sid);
if (!session)
{
VDBG (0, "request to reset unknown handle 0x%llx", reset_msg->handle);
return VCL_INVALID_SESSION_INDEX;
}
/* Caught a reset before actually accepting the session */
if (session->session_state == STATE_LISTEN)
{
if (!vcl_flag_accepted_session (session, reset_msg->handle,
VCL_ACCEPTED_F_RESET))
VDBG (0, "session was not accepted!");
return VCL_INVALID_SESSION_INDEX;
}
session->session_state = STATE_DISCONNECT;
VDBG (0, "reset session %u [0x%llx]", sid, reset_msg->handle);
return sid;
}
static u32
vcl_session_bound_handler (vcl_worker_t * wrk, session_bound_msg_t * mp)
{
vcl_session_t *session;
u32 sid = mp->context;
session = vcl_session_get (wrk, sid);
if (mp->retval)
{
VERR ("session %u [0x%llx]: bind failed: %U", sid, mp->handle,
format_api_error, mp->retval);
if (session)
{
session->session_state = STATE_FAILED;
session->vpp_handle = mp->handle;
return sid;
}
else
{
VDBG (0, "ERROR: session %u [0x%llx]: Invalid session index!",
sid, mp->handle);
return VCL_INVALID_SESSION_INDEX;
}
}
session->vpp_handle = mp->handle;
session->transport.is_ip4 = mp->lcl_is_ip4;
clib_memcpy_fast (&session->transport.lcl_ip, mp->lcl_ip,
sizeof (ip46_address_t));
session->transport.lcl_port = mp->lcl_port;
vcl_session_table_add_listener (wrk, mp->handle, sid);
session->session_state = STATE_LISTEN;
session->vpp_evt_q = uword_to_pointer (mp->vpp_evt_q, svm_msg_q_t *);
vec_validate (wrk->vpp_event_queues, 0);
wrk->vpp_event_queues[0] = session->vpp_evt_q;
if (session->is_dgram)
{
svm_fifo_t *rx_fifo, *tx_fifo;
session->vpp_evt_q = uword_to_pointer (mp->vpp_evt_q, svm_msg_q_t *);
rx_fifo = uword_to_pointer (mp->rx_fifo, svm_fifo_t *);
rx_fifo->client_session_index = sid;
tx_fifo = uword_to_pointer (mp->tx_fifo, svm_fifo_t *);
tx_fifo->client_session_index = sid;
session->rx_fifo = rx_fifo;
session->tx_fifo = tx_fifo;
}
VDBG (0, "session %u [0x%llx]: listen succeeded!", sid, mp->handle);
return sid;
}
static void
vcl_session_unlisten_reply_handler (vcl_worker_t * wrk, void *data)
{
session_unlisten_reply_msg_t *mp = (session_unlisten_reply_msg_t *) data;
vcl_session_t *s;
s = vcl_session_get_w_vpp_handle (wrk, mp->handle);
if (!s || s->session_state != STATE_DISCONNECT)
{
VDBG (0, "Unlisten reply with wrong handle %llx", mp->handle);
return;
}
if (mp->retval)
VDBG (0, "ERROR: session %u [0xllx]: unlisten failed: %U",
s->session_index, mp->handle, format_api_error, ntohl (mp->retval));
if (mp->context != wrk->wrk_index)
VDBG (0, "wrong context");
vcl_session_table_del_vpp_handle (wrk, mp->handle);
vcl_session_free (wrk, s);
}
static vcl_session_t *
vcl_session_accepted (vcl_worker_t * wrk, session_accepted_msg_t * msg)
{
vcl_session_msg_t *vcl_msg;
vcl_session_t *session;
session = vcl_session_get_w_vpp_handle (wrk, msg->handle);
if (PREDICT_FALSE (session != 0))
VWRN ("session overlap handle %lu state %u!", msg->handle,
session->session_state);
session = vcl_session_table_lookup_listener (wrk, msg->listener_handle);
if (!session)
{
VERR ("couldn't find listen session: listener handle %llx",
msg->listener_handle);
return 0;
}
clib_fifo_add2 (session->accept_evts_fifo, vcl_msg);
vcl_msg->accepted_msg = *msg;
/* Session handle points to listener until fully accepted by app */
vcl_session_table_add_vpp_handle (wrk, msg->handle, session->session_index);
return session;
}
static vcl_session_t *
vcl_session_disconnected_handler (vcl_worker_t * wrk,
session_disconnected_msg_t * msg)
{
vcl_session_t *session;
session = vcl_session_get_w_vpp_handle (wrk, msg->handle);
if (!session)
{
VDBG (0, "request to disconnect unknown handle 0x%llx", msg->handle);
return 0;
}
/* Caught a disconnect before actually accepting the session */
if (session->session_state == STATE_LISTEN)
{
if (!vcl_flag_accepted_session (session, msg->handle,
VCL_ACCEPTED_F_CLOSED))
VDBG (0, "session was not accepted!");
return 0;
}
session->session_state = STATE_VPP_CLOSING;
return session;
}
static void
vcl_session_req_worker_update_handler (vcl_worker_t * wrk, void *data)
{
session_req_worker_update_msg_t *msg;
vcl_session_t *s;
msg = (session_req_worker_update_msg_t *) data;
s = vcl_session_get_w_vpp_handle (wrk, msg->session_handle);
if (!s)
return;
vec_add1 (wrk->pending_session_wrk_updates, s->session_index);
}
static void
vcl_session_worker_update_reply_handler (vcl_worker_t * wrk, void *data)
{
session_worker_update_reply_msg_t *msg;
vcl_session_t *s;
msg = (session_worker_update_reply_msg_t *) data;
s = vcl_session_get_w_vpp_handle (wrk, msg->handle);
if (!s)
{
VDBG (0, "unknown handle 0x%llx", msg->handle);
return;
}
if (vcl_wait_for_segment (msg->segment_handle))
{
clib_warning ("segment for session %u couldn't be mounted!",
s->session_index);
return;
}
if (s->rx_fifo)
{
s->rx_fifo = uword_to_pointer (msg->rx_fifo, svm_fifo_t *);
s->tx_fifo = uword_to_pointer (msg->tx_fifo, svm_fifo_t *);
s->rx_fifo->client_session_index = s->session_index;
s->tx_fifo->client_session_index = s->session_index;
s->rx_fifo->client_thread_index = wrk->wrk_index;
s->tx_fifo->client_thread_index = wrk->wrk_index;
}
s->session_state = STATE_UPDATED;
VDBG (0, "session %u[0x%llx] moved to worker %u", s->session_index,
s->vpp_handle, wrk->wrk_index);
}
static int
vcl_handle_mq_event (vcl_worker_t * wrk, session_event_t * e)
{
session_disconnected_msg_t *disconnected_msg;
vcl_session_t *session;
switch (e->event_type)
{
case SESSION_IO_EVT_RX:
case SESSION_IO_EVT_TX:
session = vcl_session_get (wrk, e->session_index);
if (!session || !(session->session_state & STATE_OPEN))
break;
vec_add1 (wrk->unhandled_evts_vector, *e);
break;
case SESSION_CTRL_EVT_ACCEPTED:
vcl_session_accepted (wrk, (session_accepted_msg_t *) e->data);
break;
case SESSION_CTRL_EVT_CONNECTED:
vcl_session_connected_handler (wrk,
(session_connected_msg_t *) e->data);
break;
case SESSION_CTRL_EVT_DISCONNECTED:
disconnected_msg = (session_disconnected_msg_t *) e->data;
session = vcl_session_disconnected_handler (wrk, disconnected_msg);
if (!session)
break;
VDBG (0, "disconnected session %u [0x%llx]", session->session_index,
session->vpp_handle);
break;
case SESSION_CTRL_EVT_RESET:
vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
break;
case SESSION_CTRL_EVT_BOUND:
vcl_session_bound_handler (wrk, (session_bound_msg_t *) e->data);
break;
case SESSION_CTRL_EVT_UNLISTEN_REPLY:
vcl_session_unlisten_reply_handler (wrk, e->data);
break;
case SESSION_CTRL_EVT_REQ_WORKER_UPDATE:
vcl_session_req_worker_update_handler (wrk, e->data);
break;
case SESSION_CTRL_EVT_WORKER_UPDATE_REPLY:
vcl_session_worker_update_reply_handler (wrk, e->data);
break;
default:
clib_warning ("unhandled %u", e->event_type);
}
return VPPCOM_OK;
}
static int
vppcom_wait_for_session_state_change (u32 session_index,
vcl_session_state_t state,
f64 wait_for_time)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
vcl_session_t *volatile session;
svm_msg_q_msg_t msg;
session_event_t *e;
do
{
session = vcl_session_get (wrk, session_index);
if (PREDICT_FALSE (!session))
{
return VPPCOM_EBADFD;
}
if (session->session_state & state)
{
return VPPCOM_OK;
}
if (session->session_state & STATE_FAILED)
{
return VPPCOM_ECONNREFUSED;
}
if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0))
{
usleep (100);
continue;
}
e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
vcl_handle_mq_event (wrk, e);
svm_msg_q_free_msg (wrk->app_event_queue, &msg);
}
while (clib_time_now (&wrk->clib_time) < timeout);
VDBG (0, "timeout waiting for state 0x%x (%s)", state,
vppcom_session_state_str (state));
vcl_evt (VCL_EVT_SESSION_TIMEOUT, session, session_state);
return VPPCOM_ETIMEDOUT;
}
static void
vcl_handle_pending_wrk_updates (vcl_worker_t * wrk)
{
vcl_session_state_t state;
vcl_session_t *s;
u32 *sip;
if (PREDICT_TRUE (vec_len (wrk->pending_session_wrk_updates) == 0))
return;
vec_foreach (sip, wrk->pending_session_wrk_updates)
{
s = vcl_session_get (wrk, *sip);
vcl_send_session_worker_update (wrk, s, wrk->wrk_index);
state = s->session_state;
vppcom_wait_for_session_state_change (s->session_index, STATE_UPDATED, 5);
s->session_state = state;
}
vec_reset_length (wrk->pending_session_wrk_updates);
}
void
vcl_flush_mq_events (void)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
svm_msg_q_msg_t *msg;
session_event_t *e;
svm_msg_q_t *mq;
int i;
mq = wrk->app_event_queue;
svm_msg_q_lock (mq);
vcl_mq_dequeue_batch (wrk, mq, ~0);
svm_msg_q_unlock (mq);
for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
{
msg = vec_elt_at_index (wrk->mq_msg_vector, i);
e = svm_msg_q_msg_data (mq, msg);
vcl_handle_mq_event (wrk, e);
svm_msg_q_free_msg (mq, msg);
}
vec_reset_length (wrk->mq_msg_vector);
vcl_handle_pending_wrk_updates (wrk);
}
static int
vppcom_app_session_enable (void)
{
int rv;
if (vcm->app_state != STATE_APP_ENABLED)
{
vppcom_send_session_enable_disable (1 /* is_enabled == TRUE */ );
rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED);
if (PREDICT_FALSE (rv))
{
VDBG (0, "application session enable timed out! returning %d (%s)",
rv, vppcom_retval_str (rv));
return rv;
}
}
return VPPCOM_OK;
}
static int
vppcom_app_attach (void)
{
int rv;
vppcom_app_send_attach ();
rv = vcl_wait_for_app_state_change (STATE_APP_ATTACHED);
if (PREDICT_FALSE (rv))
{
VDBG (0, "application attach timed out! returning %d (%s)", rv,
vppcom_retval_str (rv));
return rv;
}
return VPPCOM_OK;
}
static int
vppcom_session_unbind (u32 session_handle)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
session_accepted_msg_t *accepted_msg;
vcl_session_t *session = 0;
vcl_session_msg_t *evt;
u64 vpp_handle;
session = vcl_session_get_w_handle (wrk, session_handle);
if (!session)
return VPPCOM_EBADFD;
/* Flush pending accept events, if any */
while (clib_fifo_elts (session->accept_evts_fifo))
{
clib_fifo_sub2 (session->accept_evts_fifo, evt);
accepted_msg = &evt->accepted_msg;
vcl_session_table_del_vpp_handle (wrk, accepted_msg->handle);
vcl_send_session_accepted_reply (session->vpp_evt_q,
accepted_msg->context,
session->vpp_handle, -1);
}
clib_fifo_free (session->accept_evts_fifo);
vpp_handle = session->vpp_handle;
session->vpp_handle = ~0;
session->session_state = STATE_DISCONNECT;
VDBG (1, "session %u [0x%llx]: sending unbind!", session->session_index,
vpp_handle);
vcl_evt (VCL_EVT_UNBIND, session);
vppcom_send_unbind_sock (wrk, vpp_handle);
return VPPCOM_OK;
}
static int
vppcom_session_disconnect (u32 session_handle)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
svm_msg_q_t *vpp_evt_q;
vcl_session_t *session, *listen_session;
vcl_session_state_t state;
u64 vpp_handle;
session = vcl_session_get_w_handle (wrk, session_handle);
if (!session)
return VPPCOM_EBADFD;
vpp_handle = session->vpp_handle;
state = session->session_state;
VDBG (1, "session %u [0x%llx] state 0x%x (%s)", session->session_index,
vpp_handle, state, vppcom_session_state_str (state));
if (PREDICT_FALSE (state & STATE_LISTEN))
{
VDBG (0, "ERROR: Cannot disconnect a listen socket!");
return VPPCOM_EBADFD;
}
if (state & STATE_VPP_CLOSING)
{
vpp_evt_q = vcl_session_vpp_evt_q (wrk, session);
vcl_send_session_disconnected_reply (vpp_evt_q, wrk->my_client_index,
vpp_handle, 0);
VDBG (1, "session %u [0x%llx]: sending disconnect REPLY...",
session->session_index, vpp_handle);
}
else
{
VDBG (1, "session %u [0x%llx]: sending disconnect...",
session->session_index, vpp_handle);
vppcom_send_disconnect_session (vpp_handle);
}
if (session->listener_index != VCL_INVALID_SESSION_INDEX)
{
listen_session = vcl_session_get (wrk, session->listener_index);
listen_session->n_accepted_sessions--;
}
return VPPCOM_OK;
}
/**
* Handle app exit
*
* Notify vpp of the disconnect and mark the worker as free. If we're the
* last worker, do a full cleanup otherwise, since we're probably a forked
* child, avoid syscalls as much as possible. We might've lost privileges.
*/
void
vppcom_app_exit (void)
{
if (!pool_elts (vcm->workers))
return;
vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
vcl_set_worker_index (~0);
vcl_elog_stop (vcm);
if (vec_len (vcm->workers) == 1)
vl_client_disconnect_from_vlib ();
else
vl_client_send_disconnect (1 /* vpp should cleanup */ );
}
/*
* VPPCOM Public API functions
*/
int
vppcom_app_create (char *app_name)
{
vppcom_cfg_t *vcl_cfg = &vcm->cfg;
int rv;
if (vcm->is_init)
{
VDBG (1, "already initialized");
return VPPCOM_EEXIST;
}
vcm->is_init = 1;
vppcom_cfg (&vcm->cfg);
vcl_cfg = &vcm->cfg;
vcm->main_cpu = pthread_self ();
vcm->main_pid = getpid ();
vcm->app_name = format (0, "%s", app_name);
vppcom_init_error_string_table ();
fifo_segment_main_init (&vcm->segment_main, vcl_cfg->segment_baseva,
20 /* timeout in secs */ );
pool_alloc (vcm->workers, vcl_cfg->max_workers);
clib_spinlock_init (&vcm->workers_lock);
clib_rwlock_init (&vcm->segment_table_lock);
atexit (vppcom_app_exit);
/* Allocate default worker */
vcl_worker_alloc_and_init ();
/* API hookup and connect to VPP */
vppcom_api_hookup ();
vcl_elog_init (vcm);
vcm->app_state = STATE_APP_START;
rv = vppcom_connect_to_vpp (app_name);
if (rv)
{
VERR ("couldn't connect to VPP!");
return rv;
}
VDBG (0, "sending session enable");
rv = vppcom_app_session_enable ();
if (rv)
{
VERR ("vppcom_app_session_enable() failed!");
return rv;
}
VDBG (0, "sending app attach");
rv = vppcom_app_attach ();
if (rv)
{
VERR ("vppcom_app_attach() failed!");
return rv;
}
VDBG (0, "app_name '%s', my_client_index %d (0x%x)", app_name,
vcm->workers[0].my_client_index, vcm->workers[0].my_client_index);
return VPPCOM_OK;
}
void
vppcom_app_destroy (void)
{
int rv;
f64 orig_app_timeout;
if (!pool_elts (vcm->workers))
return;
vcl_evt (VCL_EVT_DETACH, vcm);
if (pool_elts (vcm->workers) == 1)
{
vppcom_app_send_detach ();
orig_app_timeout = vcm->cfg.app_timeout;
vcm->cfg.app_timeout = 2.0;
rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED);
vcm->cfg.app_timeout = orig_app_timeout;
if (PREDICT_FALSE (rv))
VDBG (0, "application detach timed out! returning %d (%s)", rv,
vppcom_retval_str (rv));
vec_free (vcm->app_name);
vcl_worker_cleanup (vcl_worker_get_current (), 0 /* notify vpp */ );
}
else
{
vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
}
vcl_set_worker_index (~0);
vcl_elog_stop (vcm);
vl_client_disconnect_from_vlib ();
}
int
vppcom_session_create (u8 proto, u8 is_nonblocking)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
vcl_session_t *session;
session = vcl_session_alloc (wrk);
session->session_type = proto;
session->session_state = STATE_START;
session->vpp_handle = ~0;
session->is_dgram = vcl_proto_is_dgram (proto);
if (is_nonblocking)
VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
vcl_evt (VCL_EVT_CREATE, session, session_type, session->session_state,
is_nonblocking, session_index);
VDBG (0, "created session %u", session->session_index);
return vcl_session_handle (session);
}
int
vcl_session_cleanup (vcl_worker_t * wrk, vcl_session_t * session,
vcl_session_handle_t sh, u8 do_disconnect)
{
vcl_session_state_t state;
u32 next_sh, vep_sh;
int rv = VPPCOM_OK;
u64 vpp_handle;
u8 is_vep;
is_vep = session->is_vep;
next_sh = session->vep.next_sh;
vep_sh = session->vep.vep_sh;
state = session->session_state;
vpp_handle = session->vpp_handle;
VDBG (1, "session %u [0x%llx] closing", session->session_index, vpp_handle);
if (is_vep)
{
while (next_sh != ~0)
{
rv = vppcom_epoll_ctl (sh, EPOLL_CTL_DEL, next_sh, 0);
if (PREDICT_FALSE (rv < 0))
VDBG (0, "vpp handle 0x%llx, sh %u: EPOLL_CTL_DEL vep_idx %u"
" failed! rv %d (%s)", vpp_handle, next_sh, vep_sh, rv,
vppcom_retval_str (rv));
next_sh = session->vep.next_sh;
}
}
else
{
if (session->is_vep_session)
{
rv = vppcom_epoll_ctl (vep_sh, EPOLL_CTL_DEL, sh, 0);
if (rv < 0)
VDBG (0, "session %u [0x%llx]: EPOLL_CTL_DEL vep_idx %u "
"failed! rv %d (%s)", session->session_index, vpp_handle,
vep_sh, rv, vppcom_retval_str (rv));
}
if (!do_disconnect)
{
VDBG (1, "session %u [0x%llx] disconnect skipped",
session->session_index, vpp_handle);
goto cleanup;
}
if (state & STATE_LISTEN)
{
rv = vppcom_session_unbind (sh);
if (PREDICT_FALSE (rv < 0))
VDBG (0, "session %u [0x%llx]: listener unbind failed! "
"rv %d (%s)", session->session_index, vpp_handle, rv,
vppcom_retval_str (rv));
return rv;
}
else if ((state & STATE_OPEN)
|| (vcl_session_is_connectable_listener (wrk, session)))
{
rv = vppcom_session_disconnect (sh);
if (PREDICT_FALSE (rv < 0))
VDBG (0, "ERROR: session %u [0x%llx]: disconnect failed!"
" rv %d (%s)", session->session_index, vpp_handle,
rv, vppcom_retval_str (rv));
}
else if (state == STATE_DISCONNECT)
{
svm_msg_q_t *mq = vcl_session_vpp_evt_q (wrk, session);
vcl_send_session_reset_reply (mq, wrk->my_client_index,
session->vpp_handle, 0);
}
}
VDBG (0, "session %u [0x%llx] removed", session->session_index, vpp_handle);
cleanup:
vcl_session_table_del_vpp_handle (wrk, vpp_handle);
vcl_session_free (wrk, session);
vcl_evt (VCL_EVT_CLOSE, session, rv);
return rv;
}
int
vppcom_session_close (uint32_t session_handle)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
vcl_session_t *session;
session = vcl_session_get_w_handle (wrk, session_handle);
if (!session)
return VPPCOM_EBADFD;
return vcl_session_cleanup (wrk, session, session_handle,
1 /* do_disconnect */ );
}
int
vppcom_session_bind (uint32_t session_handle, vppcom_endpt_t * ep)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
vcl_session_t *session = 0;
if (!ep || !ep->ip)
return VPPCOM_EINVAL;
session = vcl_session_get_w_handle (wrk, session_handle);
if (!session)
return VPPCOM_EBADFD;
if (session->is_vep)
{
VDBG (0, "ERROR: cannot bind to epoll session %u!",
session->session_index);
return VPPCOM_EBADFD;
}
session->transport.is_ip4 = ep->is_ip4;
if (ep->is_ip4)
clib_memcpy_fast (&session->transport.lcl_ip.ip4, ep->ip,
sizeof (ip4_address_t));
else
clib_memcpy_fast (&session->transport.lcl_ip.ip6, ep->ip,
sizeof (ip6_address_t));
session->transport.lcl_port = ep->port;
VDBG (0, "session %u handle %u: binding to local %s address %U port %u, "
"proto %s", session->session_index, session_handle,
session->transport.is_ip4 ? "IPv4" : "IPv6",
format_ip46_address, &session->transport.lcl_ip,
session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
clib_net_to_host_u16 (session->transport.lcl_port),
vppcom_proto_str (session->session_type));
vcl_evt (VCL_EVT_BIND, session);
if (session->session_type == VPPCOM_PROTO_UDP)
vppcom_session_listen (session_handle, 10);
return VPPCOM_OK;
}
int
vppcom_session_listen (uint32_t listen_sh, uint32_t q_len)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
vcl_session_t *listen_session = 0;
u64 listen_vpp_handle;
int rv;
listen_session = vcl_session_get_w_handle (wrk, listen_sh);
if (!listen_session || listen_session->is_vep)
return VPPCOM_EBADFD;
if (q_len == 0 || q_len == ~0)
q_len = vcm->cfg.listen_queue_size;
listen_vpp_handle = listen_session->vpp_handle;
if (listen_session->session_state & STATE_LISTEN)
{
VDBG (0, "session %u [0x%llx]: already in listen state!",
listen_sh, listen_vpp_handle);
return VPPCOM_OK;
}
VDBG (0, "session %u: sending vpp listen request...", listen_sh);
/*
* Send listen request to vpp and wait for reply
*/
vppcom_send_bind_sock (listen_session);
rv = vppcom_wait_for_session_state_change (listen_session->session_index,
STATE_LISTEN,
vcm->cfg.session_timeout);
if (PREDICT_FALSE (rv))
{
listen_session = vcl_session_get_w_handle (wrk, listen_sh);
VDBG (0, "session %u [0x%llx]: listen failed! returning %d (%s)",
listen_sh, listen_session->vpp_handle, rv,
vppcom_retval_str (rv));
return rv;
}
return VPPCOM_OK;
}
int
vppcom_session_tls_add_cert (uint32_t session_handle, char *cert,
uint32_t cert_len)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
vcl_session_t *session = 0;
session = vcl_session_get_w_handle (wrk, session_handle);
if (!session)
return VPPCOM_EBADFD;
if (cert_len == 0 || cert_len == ~0)
return VPPCOM_EBADFD;
/*
* Send listen request to vpp and wait for reply
*/
vppcom_send_application_tls_cert_add (session, cert, cert_len);
return VPPCOM_OK;
}
int
vppcom_session_tls_add_key (uint32_t session_handle, char *key,
uint32_t key_len)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
vcl_session_t *session = 0;
session = vcl_session_get_w_handle (wrk, session_handle);
if (!session)
return VPPCOM_EBADFD;
if (key_len == 0 || key_len == ~0)
return VPPCOM_EBADFD;
/*
* Send listen request to vpp and wait for reply
*/
vppcom_send_application_tls_key_add (session, key, key_len);
return VPPCOM_OK;
}
static int
validate_args_session_accept_ (vcl_worker_t * wrk, vcl_session_t * ls)
{
if (ls->is_vep)
{
VDBG (0, "ERROR: cannot accept on epoll session %u!",
ls->session_index);
return VPPCOM_EBADFD;
}
if ((ls->session_state != STATE_LISTEN)
&& (!vcl_session_is_connectable_listener (wrk, ls)))
{
VDBG (0,
"ERROR: session [0x%llx]: not in listen state! state 0x%x"
" (%s)", ls->vpp_handle, ls->session_state,
vppcom_session_state_str (ls->session_state));
return VPPCOM_EBADFD;
}
return VPPCOM_OK;
}
int
vppcom_unformat_proto (uint8_t * proto, char *proto_str)
{
if (!strcmp (proto_str, "TCP"))
*proto = VPPCOM_PROTO_TCP;
else if (!strcmp (proto_str, "tcp"))
*proto = VPPCOM_PROTO_TCP;
else if (!strcmp (proto_str, "UDP"))
*proto = VPPCOM_PROTO_UDP;
else if (!strcmp (proto_str, "udp"))
*proto = VPPCOM_PROTO_UDP;
else if (!strcmp (proto_str, "UDPC"))
*proto = VPPCOM_PROTO_UDPC;
else if (!strcmp (proto_str, "udpc"))
*proto = VPPCOM_PROTO_UDPC;
else if (!strcmp (proto_str, "SCTP"))
*proto = VPPCOM_PROTO_SCTP;
else if (!strcmp (proto_str, "sctp"))
*proto = VPPCOM_PROTO_SCTP;
else if (!strcmp (proto_str, "TLS"))
*proto = VPPCOM_PROTO_TLS;
else if (!strcmp (proto_str, "tls"))
*proto = VPPCOM_PROTO_TLS;
else if (!strcmp (proto_str, "QUIC"))
*proto = VPPCOM_PROTO_QUIC;
else if (!strcmp (proto_str, "quic"))
*proto = VPPCOM_PROTO_QUIC;
else
return 1;
return 0;
}
int
vppcom_session_accept (uint32_t listen_session_handle, vppcom_endpt_t * ep,
uint32_t flags)
{
u32 client_session_index = ~0, listen_session_index, accept_flags = 0;
vcl_worker_t *wrk = vcl_worker_get_current ();
session_accepted_msg_t accepted_msg;
vcl_session_t *listen_session = 0;
vcl_session_t *client_session = 0;
vcl_session_msg_t *evt;
svm_msg_q_msg_t msg;
session_event_t *e;
u8 is_nonblocking;
int rv;
listen_session = vcl_session_get_w_handle (wrk, listen_session_handle);
if (!listen_session)
return VPPCOM_EBADFD;
listen_session_index = listen_session->session_index;
if ((rv = validate_args_session_accept_ (wrk, listen_session)))
return rv;
if (clib_fifo_elts (listen_session->accept_evts_fifo))
{
clib_fifo_sub2 (listen_session->accept_evts_fifo, evt);
accept_flags = evt->flags;
accepted_msg = evt->accepted_msg;
goto handle;
}
is_nonblocking = VCL_SESS_ATTR_TEST (listen_session->attr,
VCL_SESS_ATTR_NONBLOCK);
if (svm_msg_q_is_empty (wrk->app_event_queue) && is_nonblocking)
return VPPCOM_EAGAIN;
while (1)
{
if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_WAIT, 0))
return VPPCOM_EAGAIN;
e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
if (e->event_type != SESSION_CTRL_EVT_ACCEPTED)
{
VDBG (0, "discarded event: %u", e->event_type);
svm_msg_q_free_msg (wrk->app_event_queue, &msg);
continue;
}
clib_memcpy_fast (&accepted_msg, e->data, sizeof (accepted_msg));
svm_msg_q_free_msg (wrk->app_event_queue, &msg);
break;
}
handle:
client_session_index = vcl_session_accepted_handler (wrk, &accepted_msg,
listen_session_index);
if (client_session_index == VCL_INVALID_SESSION_INDEX)
return VPPCOM_ECONNABORTED;
listen_session = vcl_session_get (wrk, listen_session_index);
client_session = vcl_session_get (wrk, client_session_index);
if (flags & O_NONBLOCK)
VCL_SESS_ATTR_SET (client_session->attr, VCL_SESS_ATTR_NONBLOCK);
VDBG (1, "listener %u [0x%llx]: Got a connect request! session %u [0x%llx],"
" flags %d, is_nonblocking %u", listen_session->session_index,
listen_session->vpp_handle, client_session_index,
client_session->vpp_handle, flags,
VCL_SESS_ATTR_TEST (client_session->attr, VCL_SESS_ATTR_NONBLOCK));
if (ep)
{
ep->is_ip4 = client_session->transport.is_ip4;
ep->port = client_session->transport.rmt_port;
if (client_session->transport.is_ip4)
clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip4,
sizeof (ip4_address_t));
else
clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip6,
sizeof (ip6_address_t));
}
VDBG (0, "listener %u [0x%llx] accepted %u [0x%llx] peer: %U:%u "
"local: %U:%u", listen_session_handle, listen_session->vpp_handle,
client_session_index, client_session->vpp_handle,
format_ip46_address, &client_session->transport.rmt_ip,
client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
clib_net_to_host_u16 (client_session->transport.rmt_port),
format_ip46_address, &client_session->transport.lcl_ip,
client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
clib_net_to_host_u16 (client_session->transport.lcl_port));
vcl_evt (VCL_EVT_ACCEPT, client_session, listen_session,
client_session_index);
/*
* Session might have been closed already
*/
if (accept_flags)
{
if (accept_flags & VCL_ACCEPTED_F_CLOSED)
client_session->session_state = STATE_VPP_CLOSING;
else if (accept_flags & VCL_ACCEPTED_F_RESET)
client_session->session_state = STATE_DISCONNECT;
}
return vcl_session_handle (client_session);
}
int
vppcom_session_connect (uint32_t session_handle, vppcom_endpt_t * server_ep)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
vcl_session_t *session = 0;
u32 session_index;
int rv;
session = vcl_session_get_w_handle (wrk, session_handle);
if (!session)
return VPPCOM_EBADFD;
session_index = session->session_index;
if (PREDICT_FALSE (session->is_vep))
{
VDBG (0, "ERROR: cannot connect epoll session %u!",
session->session_index);
return VPPCOM_EBADFD;
}
if (PREDICT_FALSE (session->session_state & CLIENT_STATE_OPEN))
{
VDBG (0, "session handle %u [0x%llx]: session already "
"connected to %s %U port %d proto %s, state 0x%x (%s)",
session_handle, session->vpp_handle,
session->transport.is_ip4 ? "IPv4" : "IPv6", format_ip46_address,
&session->transport.rmt_ip, session->transport.is_ip4 ?
IP46_TYPE_IP4 : IP46_TYPE_IP6,
clib_net_to_host_u16 (session->transport.rmt_port),
vppcom_proto_str (session->session_type), session->session_state,
vppcom_session_state_str (session->session_state));
return VPPCOM_OK;
}
session->transport.is_ip4 = server_ep->is_ip4;
if (session->transport.is_ip4)
clib_memcpy_fast (&session->transport.rmt_ip.ip4, server_ep->ip,
sizeof (ip4_address_t));
else
clib_memcpy_fast (&session->transport.rmt_ip.ip6, server_ep->ip,
sizeof (ip6_address_t));
session->transport.rmt_port = server_ep->port;
session->parent_handle = VCL_INVALID_SESSION_HANDLE;
VDBG (0, "session handle %u: connecting to server %s %U "
"port %d proto %s", session_handle,
session->transport.is_ip4 ? "IPv4" : "IPv6",
format_ip46_address,
&session->transport.rmt_ip, session->transport.is_ip4 ?
IP46_TYPE_IP4 : IP46_TYPE_IP6,
clib_net_to_host_u16 (session->transport.rmt_port),
vppcom_proto_str (session->session_type));
/*
* Send connect request and wait for reply from vpp
*/
vppcom_send_connect_sock (session);
rv = vppcom_wait_for_session_state_change (session_index, STATE_CONNECT,
vcm->cfg.session_timeout);
session = vcl_session_get (wrk, session_index);
VDBG (0, "session %u [0x%llx]: connect %s!", session->session_index,
session->vpp_handle, rv ? "failed" : "succeeded");
return rv;
}
int
vppcom_session_stream_connect (uint32_t session_handle,
uint32_t parent_session_handle)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
vcl_session_t *session, *parent_session;
u32 session_index, parent_session_index;
int rv;
session = vcl_session_get_w_handle (wrk, session_handle);
if (!session)
return VPPCOM_EBADFD;
parent_session = vcl_session_get_w_handle (wrk, parent_session_handle);
if (!parent_session)
return VPPCOM_EBADFD;
session_index = session->session_index;
parent_session_index = parent_session->session_index;
if (PREDICT_FALSE (session->is_vep))
{
VDBG (0, "ERROR: cannot connect epoll session %u!",
session->session_index);
return VPPCOM_EBADFD;
}
if (PREDICT_FALSE (session->session_state & CLIENT_STATE_OPEN))
{
VDBG (0, "session handle %u [0x%llx]: session already "
"connected to session %u [0x%llx] proto %s, state 0x%x (%s)",
session_handle, session->vpp_handle,
parent_session_handle, parent_session->vpp_handle,
vppcom_proto_str (session->session_type), session->session_state,
vppcom_session_state_str (session->session_state));
return VPPCOM_OK;
}
/* Connect to quic session specifics */
session->transport.is_ip4 = parent_session->transport.is_ip4;
session->transport.rmt_ip.ip4.as_u32 = (uint32_t) 1;
session->transport.rmt_port = 0;
session->parent_handle = parent_session->vpp_handle;
VDBG (0, "session handle %u: connecting to session %u [0x%llx]",
session_handle, parent_session_handle, parent_session->vpp_handle);
/*
* Send connect request and wait for reply from vpp
*/
vppcom_send_connect_sock (session);
rv = vppcom_wait_for_session_state_change (session_index, STATE_CONNECT,
vcm->cfg.session_timeout);
session->listener_index = parent_session_index;
parent_session = vcl_session_get_w_handle (wrk, parent_session_handle);
if (parent_session)
parent_session->n_accepted_sessions++;
session = vcl_session_get (wrk, session_index);
VDBG (0, "session %u [0x%llx]: connect %s!", session->session_index,
session->vpp_handle, rv ? "failed" : "succeeded");
return rv;
}
static u8
vcl_is_rx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
{
return (e->event_type == SESSION_IO_EVT_RX && e->session_index == sid);
}
static inline int
vppcom_session_read_internal (uint32_t session_handle, void *buf, int n,
u8 peek)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
int n_read = 0, is_nonblocking;
vcl_session_t *s = 0;
svm_fifo_t *rx_fifo;
svm_msg_q_msg_t msg;
session_event_t *e;
svm_msg_q_t *mq;
u8 is_ct;
if (PREDICT_FALSE (!buf))
return VPPCOM_EINVAL;
s = vcl_session_get_w_handle (wrk, session_handle);
if (PREDICT_FALSE (!s || s->is_vep))
return VPPCOM_EBADFD;
if (PREDICT_FALSE (!vcl_session_is_open (s)))
{
VDBG (0, "session %u[0x%llx] is not open! state 0x%x (%s)",
s->session_index, s->vpp_handle, s->session_state,
vppcom_session_state_str (s->session_state));
return vcl_session_closed_error (s);
}
is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
is_ct = vcl_session_is_ct (s);
mq = wrk->app_event_queue;
rx_fifo = is_ct ? s->ct_rx_fifo : s->rx_fifo;
s->has_rx_evt = 0;
if (svm_fifo_is_empty_cons (rx_fifo))
{
if (is_nonblocking)
{
svm_fifo_unset_event (s->rx_fifo);
return VPPCOM_EWOULDBLOCK;
}
while (svm_fifo_is_empty_cons (rx_fifo))
{
if (vcl_session_is_closing (s))
return vcl_session_closing_error (s);
svm_fifo_unset_event (s->rx_fifo);
svm_msg_q_lock (mq);
if (svm_msg_q_is_empty (mq))
svm_msg_q_wait (mq);
svm_msg_q_sub_w_lock (mq, &msg);
e = svm_msg_q_msg_data (mq, &msg);
svm_msg_q_unlock (mq);
if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
vcl_handle_mq_event (wrk, e);
svm_msg_q_free_msg (mq, &msg);
}
}
if (s->is_dgram)
n_read = app_recv_dgram_raw (rx_fifo, buf, n, &s->transport, 0, peek);
else
n_read = app_recv_stream_raw (rx_fifo, buf, n, 0, peek);
if (svm_fifo_is_empty_cons (rx_fifo))
svm_fifo_unset_event (s->rx_fifo);
/* Cut-through sessions might request tx notifications on rx fifos */
if (PREDICT_FALSE (rx_fifo->want_deq_ntf))
{
app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo->master_session_index,
SESSION_IO_EVT_RX, SVM_Q_WAIT);
svm_fifo_reset_has_deq_ntf (s->rx_fifo);
}
VDBG (2, "session %u[0x%llx]: read %d bytes from (%p)", s->session_index,
s->vpp_handle, n_read, rx_fifo);
return n_read;
}
int
vppcom_session_read (uint32_t session_handle, void *buf, size_t n)
{
return (vppcom_session_read_internal (session_handle, buf, n, 0));
}
static int
vppcom_session_peek (uint32_t session_handle, void *buf, int n)
{
return (vppcom_session_read_internal (session_handle, buf, n, 1));
}
int
vppcom_session_read_segments (uint32_t session_handle,
vppcom_data_segments_t ds)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
int n_read = 0, is_nonblocking;
vcl_session_t *s = 0;
svm_fifo_t *rx_fifo;
svm_msg_q_msg_t msg;
session_event_t *e;
svm_msg_q_t *mq;
u8 is_ct;
s = vcl_session_get_w_handle (wrk, session_handle);
if (PREDICT_FALSE (!s || s->is_vep))
return VPPCOM_EBADFD;
if (PREDICT_FALSE (!vcl_session_is_open (s)))
return vcl_session_closed_error (s);
is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
is_ct = vcl_session_is_ct (s);
mq = is_ct ? s->our_evt_q : wrk->app_event_queue;
rx_fifo = s->rx_fifo;
s->has_rx_evt = 0;
if (is_ct)
svm_fifo_unset_event (s->rx_fifo);
if (svm_fifo_is_empty_cons (rx_fifo))
{
if (is_nonblocking)
{
svm_fifo_unset_event (rx_fifo);
return VPPCOM_EWOULDBLOCK;
}
while (svm_fifo_is_empty_cons (rx_fifo))
{
if (vcl_session_is_closing (s))
return vcl_session_closing_error (s);
svm_fifo_unset_event (rx_fifo);
svm_msg_q_lock (mq);
if (svm_msg_q_is_empty (mq))
svm_msg_q_wait (mq);
svm_msg_q_sub_w_lock (mq, &msg);
e = svm_msg_q_msg_data (mq, &msg);
svm_msg_q_unlock (mq);
if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct))
vcl_handle_mq_event (wrk, e);
svm_msg_q_free_msg (mq, &msg);
}
}
n_read = svm_fifo_segments (rx_fifo, (svm_fifo_seg_t *) ds);
svm_fifo_unset_event (rx_fifo);
return n_read;
}
void
vppcom_session_free_segments (uint32_t session_handle,
vppcom_data_segments_t ds)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
vcl_session_t *s;
s = vcl_session_get_w_handle (wrk, session_handle);
if (PREDICT_FALSE (!s || s->is_vep))
return;
svm_fifo_segments_free (s->rx_fifo, (svm_fifo_seg_t *) ds);
}
int
vppcom_data_segment_copy (void *buf, vppcom_data_segments_t ds, u32 max_bytes)
{
u32 first_copy = clib_min (ds[0].len, max_bytes);
clib_memcpy_fast (buf, ds[0].data, first_copy);
if (first_copy < max_bytes)
{
clib_memcpy_fast (buf + first_copy, ds[1].data,
clib_min (ds[1].len, max_bytes - first_copy));
}
return 0;
}
static u8
vcl_is_tx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct)
{
return (e->event_type == SESSION_IO_EVT_TX && e->session_index == sid);
}
static inline int
vppcom_session_write_inline (uint32_t session_handle, void *buf, size_t n,
u8 is_flush)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
int n_write, is_nonblocking;
vcl_session_t *s = 0;
session_evt_type_t et;
svm_msg_q_msg_t msg;
svm_fifo_t *tx_fifo;
session_event_t *e;
svm_msg_q_t *mq;
u8 is_ct;
if (PREDICT_FALSE (!buf))
return VPPCOM_EINVAL;
s = vcl_session_get_w_handle (wrk, session_handle);
if (PREDICT_FALSE (!s))
return VPPCOM_EBADFD;
if (PREDICT_FALSE (s->is_vep))
{
VDBG (0, "ERROR: session %u [0x%llx]: cannot write to an epoll"
" session!", s->session_index, s->vpp_handle);
return VPPCOM_EBADFD;
}
if (PREDICT_FALSE (!vcl_session_is_open (s)))
{
VDBG (1, "session %u [0x%llx]: is not open! state 0x%x (%s)",
s->session_index, s->vpp_handle, s->session_state,
vppcom_session_state_str (s->session_state));
return vcl_session_closed_error (s);;
}
is_ct = vcl_session_is_ct (s);
tx_fifo = is_ct ? s->ct_tx_fifo : s->tx_fifo;
is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
mq = wrk->app_event_queue;
if (svm_fifo_is_full_prod (tx_fifo))
{
if (is_nonblocking)
{
return VPPCOM_EWOULDBLOCK;
}
while (svm_fifo_is_full_prod (tx_fifo))
{
svm_fifo_add_want_deq_ntf (tx_fifo, SVM_FIFO_WANT_DEQ_NOTIF);
if (vcl_session_is_closing (s))
return vcl_session_closing_error (s);
svm_msg_q_lock (mq);
if (svm_msg_q_is_empty (mq))
svm_msg_q_wait (mq);
svm_msg_q_sub_w_lock (mq, &msg);
e = svm_msg_q_msg_data (mq, &msg);
svm_msg_q_unlock (mq);
if (!vcl_is_tx_evt_for_session (e, s->session_index, is_ct))
vcl_handle_mq_event (wrk, e);
svm_msg_q_free_msg (mq, &msg);
}
}
et = SESSION_IO_EVT_TX;
if (is_flush && !is_ct)
et = SESSION_IO_EVT_TX_FLUSH;
if (s->is_dgram)
n_write = app_send_dgram_raw (tx_fifo, &s->transport,
s->vpp_evt_q, buf, n, et,
0 /* do_evt */ , SVM_Q_WAIT);
else
n_write = app_send_stream_raw (tx_fifo, s->vpp_evt_q, buf, n, et,
0 /* do_evt */ , SVM_Q_WAIT);
if (svm_fifo_set_event (s->tx_fifo))
app_send_io_evt_to_vpp (s->vpp_evt_q, s->tx_fifo->master_session_index,
et, SVM_Q_WAIT);
ASSERT (n_write > 0);
VDBG (2, "session %u [0x%llx]: wrote %d bytes", s->session_index,
s->vpp_handle, n_write);
return n_write;
}
int
vppcom_session_write (uint32_t session_handle, void *buf, size_t n)
{
return vppcom_session_write_inline (session_handle, buf, n,
0 /* is_flush */ );
}
int
vppcom_session_write_msg (uint32_t session_handle, void *buf, size_t n)
{
return vppcom_session_write_inline (session_handle, buf, n,
1 /* is_flush */ );
}
#define vcl_fifo_rx_evt_valid_or_break(_s) \
if (PREDICT_FALSE (svm_fifo_is_empty (_s->rx_fifo))) \
{ \
if (!vcl_session_is_ct (_s)) \
{ \
svm_fifo_unset_event (_s->rx_fifo); \
if (svm_fifo_is_empty (_s->rx_fifo)) \
break; \
} \
else if (svm_fifo_is_empty (_s->ct_rx_fifo)) \
{ \
svm_fifo_unset_event (_s->ct_rx_fifo); \
if (svm_fifo_is_empty (_s->ct_rx_fifo)) \
break; \
} \
} \
static void
vcl_select_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
unsigned long n_bits, unsigned long *read_map,
unsigned long *write_map,
unsigned long *except_map, u32 * bits_set)
{
session_disconnected_msg_t *disconnected_msg;
session_connected_msg_t *connected_msg;
vcl_session_t *session;
u32 sid;
switch (e->event_type)
{
case SESSION_IO_EVT_RX:
sid = e->session_index;
session = vcl_session_get (wrk, sid);
if (!session)
break;
vcl_fifo_rx_evt_valid_or_break (session);
if (sid < n_bits && read_map)
{
clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
*bits_set += 1;
}
break;
case SESSION_IO_EVT_TX:
sid = e->session_index;
session = vcl_session_get (wrk, sid);
if (!session)
break;
if (sid < n_bits && write_map)
{
clib_bitmap_set_no_check ((uword *) write_map, sid, 1);
*bits_set += 1;
}
break;
case SESSION_CTRL_EVT_ACCEPTED:
session = vcl_session_accepted (wrk,
(session_accepted_msg_t *) e->data);
if (!session)
break;
sid = session->session_index;
if (sid < n_bits && read_map)
{
clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
*bits_set += 1;
}
break;
case SESSION_CTRL_EVT_CONNECTED:
connected_msg = (session_connected_msg_t *) e->data;
vcl_session_connected_handler (wrk, connected_msg);
break;
case SESSION_CTRL_EVT_DISCONNECTED:
disconnected_msg = (session_disconnected_msg_t *) e->data;
session = vcl_session_disconnected_handler (wrk, disconnected_msg);
if (!session)
break;
sid = session->session_index;
if (sid < n_bits && except_map)
{
clib_bitmap_set_no_check ((uword *) except_map, sid, 1);
*bits_set += 1;
}
break;
case SESSION_CTRL_EVT_RESET:
sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
if (sid < n_bits && except_map)
{
clib_bitmap_set_no_check ((uword *) except_map, sid, 1);
*bits_set += 1;
}
break;
case SESSION_CTRL_EVT_UNLISTEN_REPLY:
vcl_session_unlisten_reply_handler (wrk, e->data);
break;
case SESSION_CTRL_EVT_WORKER_UPDATE_REPLY:
vcl_session_worker_update_reply_handler (wrk, e->data);
break;
case SESSION_CTRL_EVT_REQ_WORKER_UPDATE:
vcl_session_req_worker_update_handler (wrk, e->data);
break;
default:
clib_warning ("unhandled: %u", e->event_type);
break;
}
}
static int
vcl_select_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
unsigned long n_bits, unsigned long *read_map,
unsigned long *write_map, unsigned long *except_map,
double time_to_wait, u32 * bits_set)
{
svm_msg_q_msg_t *msg;
session_event_t *e;
u32 i;
svm_msg_q_lock (mq);
if (svm_msg_q_is_empty (mq))
{
if (*bits_set)
{
svm_msg_q_unlock (mq);
return 0;
}
if (!time_to_wait)
{
svm_msg_q_unlock (mq);
return 0;
}
else if (time_to_wait < 0)
{
svm_msg_q_wait (mq);
}
else
{
if (svm_msg_q_timedwait (mq, time_to_wait))
{
svm_msg_q_unlock (mq);
return 0;
}
}
}
vcl_mq_dequeue_batch (wrk, mq, ~0);
svm_msg_q_unlock (mq);
for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
{
msg = vec_elt_at_index (wrk->mq_msg_vector, i);
e = svm_msg_q_msg_data (mq, msg);
vcl_select_handle_mq_event (wrk, e, n_bits, read_map, write_map,
except_map, bits_set);
svm_msg_q_free_msg (mq, msg);
}
vec_reset_length (wrk->mq_msg_vector);
vcl_handle_pending_wrk_updates (wrk);
return *bits_set;
}
static int
vppcom_select_condvar (vcl_worker_t * wrk, int n_bits,
vcl_si_set * read_map, vcl_si_set * write_map,
vcl_si_set * except_map, double time_to_wait,
u32 * bits_set)
{
double wait = 0, start = 0;
if (!*bits_set)
{
wait = time_to_wait;
start = clib_time_now (&wrk->clib_time);
}
do
{
vcl_select_handle_mq (wrk, wrk->app_event_queue, n_bits, read_map,
write_map, except_map, wait, bits_set);
if (*bits_set)
return *bits_set;
if (wait == -1)
continue;
wait = wait - (clib_time_now (&wrk->clib_time) - start);
}
while (wait > 0);
return 0;
}
static int
vppcom_select_eventfd (vcl_worker_t * wrk, int n_bits,
vcl_si_set * read_map, vcl_si_set * write_map,
vcl_si_set * except_map, double time_to_wait,
u32 * bits_set)
{
vcl_mq_evt_conn_t *mqc;
int __clib_unused n_read;
int n_mq_evts, i;
u64 buf;
vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
vec_len (wrk->mq_events), time_to_wait);
for (i = 0; i < n_mq_evts; i++)
{
mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
n_read = read (mqc->mq_fd, &buf, sizeof (buf));
vcl_select_handle_mq (wrk, mqc->mq, n_bits, read_map, write_map,
except_map, 0, bits_set);
}
return (n_mq_evts > 0 ? (int) *bits_set : 0);
}
int
vppcom_select (int n_bits, vcl_si_set * read_map, vcl_si_set * write_map,
vcl_si_set * except_map, double time_to_wait)
{
u32 sid, minbits = clib_max (n_bits, BITS (uword)), bits_set = 0;
vcl_worker_t *wrk = vcl_worker_get_current ();
vcl_session_t *session = 0;
int rv, i;
if (n_bits && read_map)
{
clib_bitmap_validate (wrk->rd_bitmap, minbits);
clib_memcpy_fast (wrk->rd_bitmap, read_map,
vec_len (wrk->rd_bitmap) * sizeof (vcl_si_set));
memset (read_map, 0, vec_len (wrk->rd_bitmap) * sizeof (vcl_si_set));
}
if (n_bits && write_map)
{
clib_bitmap_validate (wrk->wr_bitmap, minbits);
clib_memcpy_fast (wrk->wr_bitmap, write_map,
vec_len (wrk->wr_bitmap) * sizeof (vcl_si_set));
memset (write_map, 0, vec_len (wrk->wr_bitmap) * sizeof (vcl_si_set));
}
if (n_bits && except_map)
{
clib_bitmap_validate (wrk->ex_bitmap, minbits);
clib_memcpy_fast (wrk->ex_bitmap, except_map,
vec_len (wrk->ex_bitmap) * sizeof (vcl_si_set));
memset (except_map, 0, vec_len (wrk->ex_bitmap) * sizeof (vcl_si_set));
}
if (!n_bits)
return 0;
if (!write_map)
goto check_rd;
/* *INDENT-OFF* */
clib_bitmap_foreach (sid, wrk->wr_bitmap, ({
if (!(session = vcl_session_get (wrk, sid)))
{
if (except_map && sid < minbits)
clib_bitmap_set_no_check (except_map, sid, 1);
continue;
}
rv = svm_fifo_is_full_prod (session->tx_fifo);
if (!rv)
{
clib_bitmap_set_no_check ((uword*)write_map, sid, 1);
bits_set++;
}
else
svm_fifo_add_want_deq_ntf (session->tx_fifo, SVM_FIFO_WANT_DEQ_NOTIF);
}));
check_rd:
if (!read_map)
goto check_mq;
clib_bitmap_foreach (sid, wrk->rd_bitmap, ({
if (!(session = vcl_session_get (wrk, sid)))
{
if (except_map && sid < minbits)
clib_bitmap_set_no_check (except_map, sid, 1);
continue;
}
rv = vcl_session_read_ready (session);
if (rv)
{
clib_bitmap_set_no_check ((uword*)read_map, sid, 1);
bits_set++;
}
}));
/* *INDENT-ON* */
check_mq:
for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
{
vcl_select_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i], n_bits,
read_map, write_map, except_map, &bits_set);
}
vec_reset_length (wrk->unhandled_evts_vector);
if (vcm->cfg.use_mq_eventfd)
vppcom_select_eventfd (wrk, n_bits, read_map, write_map, except_map,
time_to_wait, &bits_set);
else
vppcom_select_condvar (wrk, n_bits, read_map, write_map, except_map,
time_to_wait, &bits_set);
return (bits_set);
}
static inline void
vep_verify_epoll_chain (vcl_worker_t * wrk, u32 vep_idx)
{
vcl_session_t *session;
vppcom_epoll_t *vep;
u32 sid = vep_idx;
if (VPPCOM_DEBUG <= 2)
return;
session = vcl_session_get (wrk, vep_idx);
if (PREDICT_FALSE (!session))
{
VDBG (0, "ERROR: Invalid vep_idx (%u)!", vep_idx);
goto done;
}
if (PREDICT_FALSE (!session->is_vep))
{
VDBG (0, "ERROR: vep_idx (%u) is not a vep!", vep_idx);
goto done;
}
vep = &session->vep;
VDBG (0, "vep_idx (%u): Dumping epoll chain\n"
"{\n"
" is_vep = %u\n"
" is_vep_session = %u\n"
" next_sid = 0x%x (%u)\n"
"}\n", vep_idx, session->is_vep, session->is_vep_session,
vep->next_sh, vep->next_sh);
for (sid = vep->next_sh; sid != ~0; sid = vep->next_sh)
{
session = vcl_session_get (wrk, sid);
if (PREDICT_FALSE (!session))
{
VDBG (0, "ERROR: Invalid sid (%u)!", sid);
goto done;
}
if (PREDICT_FALSE (session->is_vep))
{
VDBG (0, "ERROR: sid (%u) is a vep!", vep_idx);
}
else if (PREDICT_FALSE (!session->is_vep_session))
{
VDBG (0, "ERROR: session (%u) is not a vep session!", sid);
goto done;
}
vep = &session->vep;
if (PREDICT_FALSE (vep->vep_sh != vep_idx))
VDBG (0, "ERROR: session (%u) vep_idx (%u) != vep_idx (%u)!",
sid, session->vep.vep_sh, vep_idx);
if (session->is_vep_session)
{
VDBG (0, "vep_idx[%u]: sid 0x%x (%u)\n"
"{\n"
" next_sid = 0x%x (%u)\n"
" prev_sid = 0x%x (%u)\n"
" vep_idx = 0x%x (%u)\n"
" ev.events = 0x%x\n"
" ev.data.u64 = 0x%llx\n"
" et_mask = 0x%x\n"
"}\n",
vep_idx, sid, sid, vep->next_sh, vep->next_sh, vep->prev_sh,
vep->prev_sh, vep->vep_sh, vep->vep_sh, vep->ev.events,
vep->ev.data.u64, vep->et_mask);
}
}
done:
VDBG (0, "vep_idx (%u): Dump complete!\n", vep_idx);
}
int
vppcom_epoll_create (void)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
vcl_session_t *vep_session;
vep_session = vcl_session_alloc (wrk);
vep_session->is_vep = 1;
vep_session->vep.vep_sh = ~0;
vep_session->vep.next_sh = ~0;
vep_session->vep.prev_sh = ~0;
vep_session->vpp_handle = ~0;
vcl_evt (VCL_EVT_EPOLL_CREATE, vep_session, vep_session->session_index);
VDBG (0, "Created vep_idx %u", vep_session->session_index);
return vcl_session_handle (vep_session);
}
int
vppcom_epoll_ctl (uint32_t vep_handle, int op, uint32_t session_handle,
struct epoll_event *event)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
vcl_session_t *vep_session;
vcl_session_t *session;
int rv = VPPCOM_OK;
if (vep_handle == session_handle)
{
VDBG (0, "vep_sh == session handle (%u)!", vep_handle);
return VPPCOM_EINVAL;
}
vep_session = vcl_session_get_w_handle (wrk, vep_handle);
if (PREDICT_FALSE (!vep_session))
{
VDBG (0, "Invalid vep_sh (%u)!", vep_handle);
return VPPCOM_EBADFD;
}
if (PREDICT_FALSE (!vep_session->is_vep))
{
VDBG (0, "vep_sh (%u) is not a vep!", vep_handle);
return VPPCOM_EINVAL;
}
ASSERT (vep_session->vep.vep_sh == ~0);
ASSERT (vep_session->vep.prev_sh == ~0);
session = vcl_session_get_w_handle (wrk, session_handle);
if (PREDICT_FALSE (!session))
{
VDBG (0, "Invalid session_handle (%u)!", session_handle);
return VPPCOM_EBADFD;
}
if (PREDICT_FALSE (session->is_vep))
{
VDBG (0, "session_handle (%u) is a vep!", vep_handle);
return VPPCOM_EINVAL;
}
switch (op)
{
case EPOLL_CTL_ADD:
if (PREDICT_FALSE (!event))
{
VDBG (0, "EPOLL_CTL_ADD: NULL pointer to epoll_event structure!");
return VPPCOM_EINVAL;
}
if (vep_session->vep.next_sh != ~0)
{
vcl_session_t *next_session;
next_session = vcl_session_get_w_handle (wrk,
vep_session->vep.next_sh);
if (PREDICT_FALSE (!next_session))
{
VDBG (0, "EPOLL_CTL_ADD: Invalid vep.next_sh (%u) on "
"vep_idx (%u)!", vep_session->vep.next_sh, vep_handle);
return VPPCOM_EBADFD;
}
ASSERT (next_session->vep.prev_sh == vep_handle);
next_session->vep.prev_sh = session_handle;
}
session->vep.next_sh = vep_session->vep.next_sh;
session->vep.prev_sh = vep_handle;
session->vep.vep_sh = vep_handle;
session->vep.et_mask = VEP_DEFAULT_ET_MASK;
session->vep.ev = *event;
session->is_vep = 0;
session->is_vep_session = 1;
vep_session->vep.next_sh = session_handle;
if (session->tx_fifo)
svm_fifo_add_want_deq_ntf (session->tx_fifo,
SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
VDBG (1, "EPOLL_CTL_ADD: vep_sh %u, sh %u, events 0x%x, data 0x%llx!",
vep_handle, session_handle, event->events, event->data.u64);
vcl_evt (VCL_EVT_EPOLL_CTLADD, session, event->events, event->data.u64);
break;
case EPOLL_CTL_MOD:
if (PREDICT_FALSE (!event))
{
VDBG (0, "EPOLL_CTL_MOD: NULL pointer to epoll_event structure!");
rv = VPPCOM_EINVAL;
goto done;
}
else if (PREDICT_FALSE (!session->is_vep_session))
{
VDBG (0, "sh %u EPOLL_CTL_MOD: not a vep session!", session_handle);
rv = VPPCOM_EINVAL;
goto done;
}
else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
{
VDBG (0, "EPOLL_CTL_MOD: sh %u vep_sh (%u) != vep_sh (%u)!",
session_handle, session->vep.vep_sh, vep_handle);
rv = VPPCOM_EINVAL;
goto done;
}
session->vep.et_mask = VEP_DEFAULT_ET_MASK;
session->vep.ev = *event;
VDBG (1, "EPOLL_CTL_MOD: vep_sh %u, sh %u, events 0x%x, data 0x%llx!",
vep_handle, session_handle, event->events, event->data.u64);
break;
case EPOLL_CTL_DEL:
if (PREDICT_FALSE (!session->is_vep_session))
{
VDBG (0, "EPOLL_CTL_DEL: %u not a vep session!", session_handle);
rv = VPPCOM_EINVAL;
goto done;
}
else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle))
{
VDBG (0, "EPOLL_CTL_DEL: sh %u vep_sh (%u) != vep_sh (%u)!",
session_handle, session->vep.vep_sh, vep_handle);
rv = VPPCOM_EINVAL;
goto done;
}
if (session->vep.prev_sh == vep_handle)
vep_session->vep.next_sh = session->vep.next_sh;
else
{
vcl_session_t *prev_session;
prev_session = vcl_session_get_w_handle (wrk, session->vep.prev_sh);
if (PREDICT_FALSE (!prev_session))
{
VDBG (0, "EPOLL_CTL_DEL: Invalid prev_sh (%u) on sh (%u)!",
session->vep.prev_sh, session_handle);
return VPPCOM_EBADFD;
}
ASSERT (prev_session->vep.next_sh == session_handle);
prev_session->vep.next_sh = session->vep.next_sh;
}
if (session->vep.next_sh != ~0)
{
vcl_session_t *next_session;
next_session = vcl_session_get_w_handle (wrk, session->vep.next_sh);
if (PREDICT_FALSE (!next_session))
{
VDBG (0, "EPOLL_CTL_DEL: Invalid next_sh (%u) on sh (%u)!",
session->vep.next_sh, session_handle);
return VPPCOM_EBADFD;
}
ASSERT (next_session->vep.prev_sh == session_handle);
next_session->vep.prev_sh = session->vep.prev_sh;
}
memset (&session->vep, 0, sizeof (session->vep));
session->vep.next_sh = ~0;
session->vep.prev_sh = ~0;
session->vep.vep_sh = ~0;
session->is_vep_session = 0;
if (session->tx_fifo)
svm_fifo_del_want_deq_ntf (session->tx_fifo, SVM_FIFO_NO_DEQ_NOTIF);
VDBG (1, "EPOLL_CTL_DEL: vep_idx %u, sh %u!", vep_handle,
session_handle);
vcl_evt (VCL_EVT_EPOLL_CTLDEL, session, vep_sh);
break;
default:
VDBG (0, "Invalid operation (%d)!", op);
rv = VPPCOM_EINVAL;
}
vep_verify_epoll_chain (wrk, vep_handle);
done:
return rv;
}
static inline void
vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e,
struct epoll_event *events, u32 * num_ev)
{
session_disconnected_msg_t *disconnected_msg;
session_connected_msg_t *connected_msg;
u32 sid = ~0, session_events;
u64 session_evt_data = ~0;
vcl_session_t *session;
u8 add_event = 0;
switch (e->event_type)
{
case SESSION_IO_EVT_RX:
sid = e->session_index;
if (!(session = vcl_session_get (wrk, sid)))
break;
vcl_fifo_rx_evt_valid_or_break (session);
session_events = session->vep.ev.events;
if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt)
break;
add_event = 1;
events[*num_ev].events |= EPOLLIN;
session_evt_data = session->vep.ev.data.u64;
session->has_rx_evt = 1;
break;
case SESSION_IO_EVT_TX:
sid = e->session_index;
if (!(session = vcl_session_get (wrk, sid)))
break;
session_events = session->vep.ev.events;
if (!(EPOLLOUT & session_events))
break;
add_event = 1;
events[*num_ev].events |= EPOLLOUT;
session_evt_data = session->vep.ev.data.u64;
svm_fifo_reset_has_deq_ntf (session->tx_fifo);
break;
case SESSION_CTRL_EVT_ACCEPTED:
session = vcl_session_accepted (wrk,
(session_accepted_msg_t *) e->data);
if (!session)
break;
session_events = session->vep.ev.events;
if (!(EPOLLIN & session_events))
break;
add_event = 1;
events[*num_ev].events |= EPOLLIN;
session_evt_data = session->vep.ev.data.u64;
break;
case SESSION_CTRL_EVT_CONNECTED:
connected_msg = (session_connected_msg_t *) e->data;
vcl_session_connected_handler (wrk, connected_msg);
/* Generate EPOLLOUT because there's no connected event */
sid = vcl_session_index_from_vpp_handle (wrk, connected_msg->handle);
if (!(session = vcl_session_get (wrk, sid)))
break;
session_events = session->vep.ev.events;
if (!(EPOLLOUT & session_events))
break;
add_event = 1;
events[*num_ev].events |= EPOLLOUT;
session_evt_data = session->vep.ev.data.u64;
break;
case SESSION_CTRL_EVT_DISCONNECTED:
disconnected_msg = (session_disconnected_msg_t *) e->data;
session = vcl_session_disconnected_handler (wrk, disconnected_msg);
if (!session)
break;
session_events = session->vep.ev.events;
if (!((EPOLLHUP | EPOLLRDHUP) & session_events))
break;
add_event = 1;
events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
session_evt_data = session->vep.ev.data.u64;
break;
case SESSION_CTRL_EVT_RESET:
sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
if (!(session = vcl_session_get (wrk, sid)))
break;
session_events = session->vep.ev.events;
if (!((EPOLLHUP | EPOLLRDHUP) & session_events))
break;
add_event = 1;
events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
session_evt_data = session->vep.ev.data.u64;
break;
case SESSION_CTRL_EVT_UNLISTEN_REPLY:
vcl_session_unlisten_reply_handler (wrk, e->data);
break;
case SESSION_CTRL_EVT_REQ_WORKER_UPDATE:
vcl_session_req_worker_update_handler (wrk, e->data);
break;
case SESSION_CTRL_EVT_WORKER_UPDATE_REPLY:
vcl_session_worker_update_reply_handler (wrk, e->data);
break;
default:
VDBG (0, "unhandled: %u", e->event_type);
break;
}
if (add_event)
{
events[*num_ev].data.u64 = session_evt_data;
if (EPOLLONESHOT & session_events)
{
session = vcl_session_get (wrk, sid);
session->vep.ev.events = 0;
}
*num_ev += 1;
}
}
static int
vcl_epoll_wait_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq,
struct epoll_event *events, u32 maxevents,
double wait_for_time, u32 * num_ev)
{
svm_msg_q_msg_t *msg;
session_event_t *e;
int i;
if (vec_len (wrk->mq_msg_vector) && svm_msg_q_is_empty (mq))
goto handle_dequeued;
svm_msg_q_lock (mq);
if (svm_msg_q_is_empty (mq))
{
if (!wait_for_time)
{
svm_msg_q_unlock (mq);
return 0;
}
else if (wait_for_time < 0)
{
svm_msg_q_wait (mq);
}
else
{
if (svm_msg_q_timedwait (mq, wait_for_time / 1e3))
{
svm_msg_q_unlock (mq);
return 0;
}
}
}
ASSERT (maxevents > *num_ev);
vcl_mq_dequeue_batch (wrk, mq, maxevents - *num_ev);
svm_msg_q_unlock (mq);
handle_dequeued:
for (i = 0; i < vec_len (wrk->mq_msg_vector); i++)
{
msg = vec_elt_at_index (wrk->mq_msg_vector, i);
e = svm_msg_q_msg_data (mq, msg);
vcl_epoll_wait_handle_mq_event (wrk, e, events, num_ev);
svm_msg_q_free_msg (mq, msg);
}
vec_reset_length (wrk->mq_msg_vector);
vcl_handle_pending_wrk_updates (wrk);
return *num_ev;
}
static int
vppcom_epoll_wait_condvar (vcl_worker_t * wrk, struct epoll_event *events,
int maxevents, u32 n_evts, double wait_for_time)
{
double wait = 0, start = 0, now;
if (!n_evts)
{
wait = wait_for_time;
start = clib_time_now (&wrk->clib_time);
}
do
{
vcl_epoll_wait_handle_mq (wrk, wrk->app_event_queue, events, maxevents,
wait, &n_evts);
if (n_evts)
return n_evts;
if (wait == -1)
continue;
now = clib_time_now (&wrk->clib_time);
wait -= now - start;
start = now;
}
while (wait > 0);
return 0;
}
static int
vppcom_epoll_wait_eventfd (vcl_worker_t * wrk, struct epoll_event *events,
int maxevents, u32 n_evts, double wait_for_time)
{
vcl_mq_evt_conn_t *mqc;
int __clib_unused n_read;
int n_mq_evts, i;
u64 buf;
vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
again:
n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
vec_len (wrk->mq_events), wait_for_time);
for (i = 0; i < n_mq_evts; i++)
{
mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32);
n_read = read (mqc->mq_fd, &buf, sizeof (buf));
vcl_epoll_wait_handle_mq (wrk, mqc->mq, events, maxevents, 0, &n_evts);
}
if (!n_evts && n_mq_evts > 0)
goto again;
return (int) n_evts;
}
int
vppcom_epoll_wait (uint32_t vep_handle, struct epoll_event *events,
int maxevents, double wait_for_time)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
vcl_session_t *vep_session;
u32 n_evts = 0;
int i;
if (PREDICT_FALSE (maxevents <= 0))
{
VDBG (0, "ERROR: Invalid maxevents (%d)!", maxevents);
return VPPCOM_EINVAL;
}
vep_session = vcl_session_get_w_handle (wrk, vep_handle);
if (!vep_session)
return VPPCOM_EBADFD;
if (PREDICT_FALSE (!vep_session->is_vep))
{
VDBG (0, "ERROR: vep_idx (%u) is not a vep!", vep_handle);
return VPPCOM_EINVAL;
}
memset (events, 0, sizeof (*events) * maxevents);
if (vec_len (wrk->unhandled_evts_vector))
{
for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++)
{
vcl_epoll_wait_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i],
events, &n_evts);
if (n_evts == maxevents)
{
vec_delete (wrk->unhandled_evts_vector, i + 1, 0);
return n_evts;
}
}
vec_reset_length (wrk->unhandled_evts_vector);
}
if (vcm->cfg.use_mq_eventfd)
return vppcom_epoll_wait_eventfd (wrk, events, maxevents, n_evts,
wait_for_time);
return vppcom_epoll_wait_condvar (wrk, events, maxevents, n_evts,
wait_for_time);
}
int
vppcom_session_attr (uint32_t session_handle, uint32_t op,
void *buffer, uint32_t * buflen)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
vcl_session_t *session;
int rv = VPPCOM_OK;
u32 *flags = buffer, tmp_flags = 0;
vppcom_endpt_t *ep = buffer;
session = vcl_session_get_w_handle (wrk, session_handle);
if (!session)
return VPPCOM_EBADFD;
switch (op)
{
case VPPCOM_ATTR_GET_NREAD:
rv = vcl_session_read_ready (session);
VDBG (2, "VPPCOM_ATTR_GET_NREAD: sh %u, nread = %d", session_handle,
rv);
break;
case VPPCOM_ATTR_GET_NWRITE:
rv = vcl_session_write_ready (session);
VDBG (2, "VPPCOM_ATTR_GET_NWRITE: sh %u, nwrite = %d", session_handle,
rv);
break;
case VPPCOM_ATTR_GET_FLAGS:
if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*flags))))
{
*flags = O_RDWR | (VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_NONBLOCK));
*buflen = sizeof (*flags);
VDBG (2, "VPPCOM_ATTR_GET_FLAGS: sh %u, flags = 0x%08x, "
"is_nonblocking = %u", session_handle, *flags,
VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_SET_FLAGS:
if (PREDICT_TRUE (buffer && buflen && (*buflen == sizeof (*flags))))
{
if (*flags & O_NONBLOCK)
VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
else
VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_NONBLOCK);
VDBG (2, "VPPCOM_ATTR_SET_FLAGS: sh %u, flags = 0x%08x,"
" is_nonblocking = %u", session_handle, *flags,
VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_PEER_ADDR:
if (PREDICT_TRUE (buffer && buflen &&
(*buflen >= sizeof (*ep)) && ep->ip))
{
ep->is_ip4 = session->transport.is_ip4;
ep->port = session->transport.rmt_port;
if (session->transport.is_ip4)
clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
sizeof (ip4_address_t));
else
clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
sizeof (ip6_address_t));
*buflen = sizeof (*ep);
VDBG (1, "VPPCOM_ATTR_GET_PEER_ADDR: sh %u, is_ip4 = %u, "
"addr = %U, port %u", session_handle, ep->is_ip4,
format_ip46_address, &session->transport.rmt_ip,
ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
clib_net_to_host_u16 (ep->port));
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_LCL_ADDR:
if (PREDICT_TRUE (buffer && buflen &&
(*buflen >= sizeof (*ep)) && ep->ip))
{
ep->is_ip4 = session->transport.is_ip4;
ep->port = session->transport.lcl_port;
if (session->transport.is_ip4)
clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip4,
sizeof (ip4_address_t));
else
clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip6,
sizeof (ip6_address_t));
*buflen = sizeof (*ep);
VDBG (1, "VPPCOM_ATTR_GET_LCL_ADDR: sh %u, is_ip4 = %u, addr = %U"
" port %d", session_handle, ep->is_ip4, format_ip46_address,
&session->transport.lcl_ip,
ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6,
clib_net_to_host_u16 (ep->port));
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_LIBC_EPFD:
rv = session->libc_epfd;
VDBG (2, "VPPCOM_ATTR_GET_LIBC_EPFD: libc_epfd %d", rv);
break;
case VPPCOM_ATTR_SET_LIBC_EPFD:
if (PREDICT_TRUE (buffer && buflen &&
(*buflen == sizeof (session->libc_epfd))))
{
session->libc_epfd = *(int *) buffer;
*buflen = sizeof (session->libc_epfd);
VDBG (2, "VPPCOM_ATTR_SET_LIBC_EPFD: libc_epfd %d, buflen %d",
session->libc_epfd, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_PROTOCOL:
if (buffer && buflen && (*buflen >= sizeof (int)))
{
*(int *) buffer = session->session_type;
*buflen = sizeof (int);
VDBG (2, "VPPCOM_ATTR_GET_PROTOCOL: %d (%s), buflen %d",
*(int *) buffer, *(int *) buffer ? "UDP" : "TCP", *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_LISTEN:
if (buffer && buflen && (*buflen >= sizeof (int)))
{
*(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_LISTEN);
*buflen = sizeof (int);
VDBG (2, "VPPCOM_ATTR_GET_LISTEN: %d, buflen %d", *(int *) buffer,
*buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_ERROR:
if (buffer && buflen && (*buflen >= sizeof (int)))
{
*(int *) buffer = 0;
*buflen = sizeof (int);
VDBG (2, "VPPCOM_ATTR_GET_ERROR: %d, buflen %d, #VPP-TBD#",
*(int *) buffer, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_TX_FIFO_LEN:
if (buffer && buflen && (*buflen >= sizeof (u32)))
{
/* VPP-TBD */
*(size_t *) buffer = (session->sndbuf_size ? session->sndbuf_size :
session->tx_fifo ? session->tx_fifo->nitems :
vcm->cfg.tx_fifo_size);
*buflen = sizeof (u32);
VDBG (2, "VPPCOM_ATTR_GET_TX_FIFO_LEN: %u (0x%x), buflen %d,"
" #VPP-TBD#", *(size_t *) buffer, *(size_t *) buffer,
*buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_SET_TX_FIFO_LEN:
if (buffer && buflen && (*buflen == sizeof (u32)))
{
/* VPP-TBD */
session->sndbuf_size = *(u32 *) buffer;
VDBG (2, "VPPCOM_ATTR_SET_TX_FIFO_LEN: %u (0x%x), buflen %d,"
" #VPP-TBD#", session->sndbuf_size, session->sndbuf_size,
*buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_RX_FIFO_LEN:
if (buffer && buflen && (*buflen >= sizeof (u32)))
{
/* VPP-TBD */
*(size_t *) buffer = (session->rcvbuf_size ? session->rcvbuf_size :
session->rx_fifo ? session->rx_fifo->nitems :
vcm->cfg.rx_fifo_size);
*buflen = sizeof (u32);
VDBG (2, "VPPCOM_ATTR_GET_RX_FIFO_LEN: %u (0x%x), buflen %d, "
"#VPP-TBD#", *(size_t *) buffer, *(size_t *) buffer, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_SET_RX_FIFO_LEN:
if (buffer && buflen && (*buflen == sizeof (u32)))
{
/* VPP-TBD */
session->rcvbuf_size = *(u32 *) buffer;
VDBG (2, "VPPCOM_ATTR_SET_RX_FIFO_LEN: %u (0x%x), buflen %d,"
" #VPP-TBD#", session->sndbuf_size, session->sndbuf_size,
*buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_REUSEADDR:
if (buffer && buflen && (*buflen >= sizeof (int)))
{
/* VPP-TBD */
*(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_REUSEADDR);
*buflen = sizeof (int);
VDBG (2, "VPPCOM_ATTR_GET_REUSEADDR: %d, buflen %d, #VPP-TBD#",
*(int *) buffer, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_SET_REUSEADDR:
if (buffer && buflen && (*buflen == sizeof (int)) &&
!VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
{
/* VPP-TBD */
if (*(int *) buffer)
VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEADDR);
else
VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEADDR);
VDBG (2, "VPPCOM_ATTR_SET_REUSEADDR: %d, buflen %d, #VPP-TBD#",
VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_REUSEADDR),
*buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_REUSEPORT:
if (buffer && buflen && (*buflen >= sizeof (int)))
{
/* VPP-TBD */
*(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_REUSEPORT);
*buflen = sizeof (int);
VDBG (2, "VPPCOM_ATTR_GET_REUSEPORT: %d, buflen %d, #VPP-TBD#",
*(int *) buffer, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_SET_REUSEPORT:
if (buffer && buflen && (*buflen == sizeof (int)) &&
!VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
{
/* VPP-TBD */
if (*(int *) buffer)
VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEPORT);
else
VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEPORT);
VDBG (2, "VPPCOM_ATTR_SET_REUSEPORT: %d, buflen %d, #VPP-TBD#",
VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_REUSEPORT),
*buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_BROADCAST:
if (buffer && buflen && (*buflen >= sizeof (int)))
{
/* VPP-TBD */
*(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_BROADCAST);
*buflen = sizeof (int);
VDBG (2, "VPPCOM_ATTR_GET_BROADCAST: %d, buflen %d, #VPP-TBD#",
*(int *) buffer, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_SET_BROADCAST:
if (buffer && buflen && (*buflen == sizeof (int)))
{
/* VPP-TBD */
if (*(int *) buffer)
VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_BROADCAST);
else
VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_BROADCAST);
VDBG (2, "VPPCOM_ATTR_SET_BROADCAST: %d, buflen %d, #VPP-TBD#",
VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_BROADCAST),
*buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_V6ONLY:
if (buffer && buflen && (*buflen >= sizeof (int)))
{
/* VPP-TBD */
*(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_V6ONLY);
*buflen = sizeof (int);
VDBG (2, "VPPCOM_ATTR_GET_V6ONLY: %d, buflen %d, #VPP-TBD#",
*(int *) buffer, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_SET_V6ONLY:
if (buffer && buflen && (*buflen == sizeof (int)))
{
/* VPP-TBD */
if (*(int *) buffer)
VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_V6ONLY);
else
VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_V6ONLY);
VDBG (2, "VPPCOM_ATTR_SET_V6ONLY: %d, buflen %d, #VPP-TBD#",
VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_V6ONLY),
*buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_KEEPALIVE:
if (buffer && buflen && (*buflen >= sizeof (int)))
{
/* VPP-TBD */
*(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_KEEPALIVE);
*buflen = sizeof (int);
VDBG (2, "VPPCOM_ATTR_GET_KEEPALIVE: %d, buflen %d, #VPP-TBD#",
*(int *) buffer, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_SET_KEEPALIVE:
if (buffer && buflen && (*buflen == sizeof (int)))
{
/* VPP-TBD */
if (*(int *) buffer)
VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_KEEPALIVE);
else
VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_KEEPALIVE);
VDBG (2, "VPPCOM_ATTR_SET_KEEPALIVE: %d, buflen %d, #VPP-TBD#",
VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_KEEPALIVE),
*buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_TCP_NODELAY:
if (buffer && buflen && (*buflen >= sizeof (int)))
{
/* VPP-TBD */
*(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_TCP_NODELAY);
*buflen = sizeof (int);
VDBG (2, "VPPCOM_ATTR_GET_TCP_NODELAY: %d, buflen %d, #VPP-TBD#",
*(int *) buffer, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_SET_TCP_NODELAY:
if (buffer && buflen && (*buflen == sizeof (int)))
{
/* VPP-TBD */
if (*(int *) buffer)
VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
else
VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
VDBG (2, "VPPCOM_ATTR_SET_TCP_NODELAY: %d, buflen %d, #VPP-TBD#",
VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_TCP_NODELAY),
*buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_TCP_KEEPIDLE:
if (buffer && buflen && (*buflen >= sizeof (int)))
{
/* VPP-TBD */
*(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_TCP_KEEPIDLE);
*buflen = sizeof (int);
VDBG (2, "VPPCOM_ATTR_GET_TCP_KEEPIDLE: %d, buflen %d, #VPP-TBD#",
*(int *) buffer, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_SET_TCP_KEEPIDLE:
if (buffer && buflen && (*buflen == sizeof (int)))
{
/* VPP-TBD */
if (*(int *) buffer)
VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
else
VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
VDBG (2, "VPPCOM_ATTR_SET_TCP_KEEPIDLE: %d, buflen %d, #VPP-TBD#",
VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_TCP_KEEPIDLE), *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_TCP_KEEPINTVL:
if (buffer && buflen && (*buflen >= sizeof (int)))
{
/* VPP-TBD */
*(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_TCP_KEEPINTVL);
*buflen = sizeof (int);
VDBG (2, "VPPCOM_ATTR_GET_TCP_KEEPINTVL: %d, buflen %d, #VPP-TBD#",
*(int *) buffer, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_SET_TCP_KEEPINTVL:
if (buffer && buflen && (*buflen == sizeof (int)))
{
/* VPP-TBD */
if (*(int *) buffer)
VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
else
VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
VDBG (2, "VPPCOM_ATTR_SET_TCP_KEEPINTVL: %d, buflen %d, #VPP-TBD#",
VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_TCP_KEEPINTVL), *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_TCP_USER_MSS:
if (buffer && buflen && (*buflen >= sizeof (u32)))
{
/* VPP-TBD */
*(u32 *) buffer = session->user_mss;
*buflen = sizeof (int);
VDBG (2, "VPPCOM_ATTR_GET_TCP_USER_MSS: %d, buflen %d, #VPP-TBD#",
*(int *) buffer, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_SET_TCP_USER_MSS:
if (buffer && buflen && (*buflen == sizeof (u32)))
{
/* VPP-TBD */
session->user_mss = *(u32 *) buffer;
VDBG (2, "VPPCOM_ATTR_SET_TCP_USER_MSS: %u, buflen %d, #VPP-TBD#",
session->user_mss, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_SET_SHUT:
if (*flags == SHUT_RD || *flags == SHUT_RDWR)
VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_SHUT_RD);
if (*flags == SHUT_WR || *flags == SHUT_RDWR)
VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_SHUT_WR);
break;
case VPPCOM_ATTR_GET_SHUT:
if (VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_SHUT_RD))
tmp_flags = 1;
if (VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_SHUT_WR))
tmp_flags |= 2;
if (tmp_flags == 1)
*(int *) buffer = SHUT_RD;
else if (tmp_flags == 2)
*(int *) buffer = SHUT_WR;
else if (tmp_flags == 3)
*(int *) buffer = SHUT_RDWR;
*buflen = sizeof (int);
break;
default:
rv = VPPCOM_EINVAL;
break;
}
return rv;
}
int
vppcom_session_recvfrom (uint32_t session_handle, void *buffer,
uint32_t buflen, int flags, vppcom_endpt_t * ep)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
int rv = VPPCOM_OK;
vcl_session_t *session = 0;
if (ep)
{
session = vcl_session_get_w_handle (wrk, session_handle);
if (PREDICT_FALSE (!session))
{
VDBG (0, "sh 0x%llx is closed!", session_handle);
return VPPCOM_EBADFD;
}
ep->is_ip4 = session->transport.is_ip4;
ep->port = session->transport.rmt_port;
}
if (flags == 0)
rv = vppcom_session_read (session_handle, buffer, buflen);
else if (flags & MSG_PEEK)
rv = vppcom_session_peek (session_handle, buffer, buflen);
else
{
VDBG (0, "Unsupport flags for recvfrom %d", flags);
return VPPCOM_EAFNOSUPPORT;
}
if (ep)
{
if (session->transport.is_ip4)
clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4,
sizeof (ip4_address_t));
else
clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6,
sizeof (ip6_address_t));
}
return rv;
}
int
vppcom_session_sendto (uint32_t session_handle, void *buffer,
uint32_t buflen, int flags, vppcom_endpt_t * ep)
{
if (!buffer)
return VPPCOM_EINVAL;
if (ep)
{
// TBD
return VPPCOM_EINVAL;
}
if (flags)
{
// TBD check the flags and do the right thing
VDBG (2, "handling flags 0x%u (%d) not implemented yet.", flags, flags);
}
return (vppcom_session_write_inline (session_handle, buffer, buflen, 1));
}
int
vppcom_poll (vcl_poll_t * vp, uint32_t n_sids, double wait_for_time)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time;
u32 i, keep_trying = 1;
svm_msg_q_msg_t msg;
session_event_t *e;
int rv, num_ev = 0;
VDBG (3, "vp %p, nsids %u, wait_for_time %f", vp, n_sids, wait_for_time);
if (!vp)
return VPPCOM_EFAULT;
do
{
vcl_session_t *session;
/* Dequeue all events and drop all unhandled io events */
while (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0) == 0)
{
e = svm_msg_q_msg_data (wrk->app_event_queue, &msg);
vcl_handle_mq_event (wrk, e);
svm_msg_q_free_msg (wrk->app_event_queue, &msg);
}
vec_reset_length (wrk->unhandled_evts_vector);
for (i = 0; i < n_sids; i++)
{
session = vcl_session_get (wrk, vp[i].sh);
if (!session)
{
vp[i].revents = POLLHUP;
num_ev++;
continue;
}
vp[i].revents = 0;
if (POLLIN & vp[i].events)
{
rv = vcl_session_read_ready (session);
if (rv > 0)
{
vp[i].revents |= POLLIN;
num_ev++;
}
else if (rv < 0)
{
switch (rv)
{
case VPPCOM_ECONNRESET:
vp[i].revents = POLLHUP;
break;
default:
vp[i].revents = POLLERR;
break;
}
num_ev++;
}
}
if (POLLOUT & vp[i].events)
{
rv = vcl_session_write_ready (session);
if (rv > 0)
{
vp[i].revents |= POLLOUT;
num_ev++;
}
else if (rv < 0)
{
switch (rv)
{
case VPPCOM_ECONNRESET:
vp[i].revents = POLLHUP;
break;
default:
vp[i].revents = POLLERR;
break;
}
num_ev++;
}
}
if (0) // Note "done:" label used by VCL_SESSION_LOCK_AND_GET()
{
vp[i].revents = POLLNVAL;
num_ev++;
}
}
if (wait_for_time != -1)
keep_trying = (clib_time_now (&wrk->clib_time) <= timeout) ? 1 : 0;
}
while ((num_ev == 0) && keep_trying);
return num_ev;
}
int
vppcom_mq_epoll_fd (void)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
return wrk->mqs_epfd;
}
int
vppcom_session_index (vcl_session_handle_t session_handle)
{
return session_handle & 0xFFFFFF;
}
int
vppcom_session_worker (vcl_session_handle_t session_handle)
{
return session_handle >> 24;
}
int
vppcom_worker_register (void)
{
if (!vcl_worker_alloc_and_init ())
return VPPCOM_EEXIST;
if (vcl_worker_set_bapi ())
return VPPCOM_EEXIST;
if (vcl_worker_register_with_vpp ())
return VPPCOM_EEXIST;
return VPPCOM_OK;
}
void
vppcom_worker_unregister (void)
{
vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ );
vcl_set_worker_index (~0);
}
int
vppcom_worker_index (void)
{
return vcl_get_worker_index ();
}
int
vppcom_worker_mqs_epfd (void)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
if (!vcm->cfg.use_mq_eventfd)
return -1;
return wrk->mqs_epfd;
}
int
vppcom_session_is_connectable_listener (uint32_t session_handle)
{
vcl_session_t *session;
vcl_worker_t *wrk = vcl_worker_get_current ();
session = vcl_session_get_w_handle (wrk, session_handle);
if (!session)
return VPPCOM_EBADFD;
return vcl_session_is_connectable_listener (wrk, session);
}
int
vppcom_session_listener (uint32_t session_handle)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
vcl_session_t *listen_session, *session;
session = vcl_session_get_w_handle (wrk, session_handle);
if (!session)
return VPPCOM_EBADFD;
if (session->listener_index == VCL_INVALID_SESSION_INDEX)
return VPPCOM_EBADFD;
listen_session = vcl_session_get_w_handle (wrk, session->listener_index);
if (!listen_session)
return VPPCOM_EBADFD;
return vcl_session_handle (listen_session);
}
int
vppcom_session_n_accepted (uint32_t session_handle)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
vcl_session_t *session = vcl_session_get_w_handle (wrk, session_handle);
if (!session)
return VPPCOM_EBADFD;
return session->n_accepted_sessions;
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/