blob: 21892438c376f2f46b5924fbe907ca9252d7942d [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 inline int
vcl_mq_dequeue_batch (vcl_worker_t * wrk, svm_msg_q_t * mq, u32 n_max_msg)
{
u32 n_msgs = 0, sz, len;
while ((sz = svm_msg_q_size (mq)))
{
len = vec_len (wrk->mq_msg_vector);
vec_validate (wrk->mq_msg_vector, len + sz - 1);
svm_msg_q_sub_raw_batch (mq, wrk->mq_msg_vector + len, sz);
n_msgs += sz;
}
return n_msgs;
}
const char *
vppcom_session_state_str (vcl_session_state_t state)
{
char *st;
switch (state)
{
case VCL_STATE_CLOSED:
st = "STATE_CLOSED";
break;
case VCL_STATE_LISTEN:
st = "STATE_LISTEN";
break;
case VCL_STATE_READY:
st = "STATE_READY";
break;
case VCL_STATE_VPP_CLOSING:
st = "STATE_VPP_CLOSING";
break;
case VCL_STATE_DISCONNECT:
st = "STATE_DISCONNECT";
break;
case VCL_STATE_DETACHED:
st = "STATE_DETACHED";
break;
case VCL_STATE_UPDATED:
st = "STATE_UPDATED";
break;
case VCL_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_listen (vcl_worker_t * wrk, vcl_session_t * s)
{
app_session_evt_t _app_evt, *app_evt = &_app_evt;
session_listen_msg_t *mp;
svm_msg_q_t *mq;
mq = vcl_worker_ctrl_mq (wrk);
app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_LISTEN);
mp = (session_listen_msg_t *) app_evt->evt->data;
memset (mp, 0, sizeof (*mp));
mp->client_index = wrk->api_client_handle;
mp->context = s->session_index;
mp->wrk_index = wrk->vpp_wrk_index;
mp->is_ip4 = s->transport.is_ip4;
clib_memcpy_fast (&mp->ip, &s->transport.lcl_ip, sizeof (mp->ip));
mp->port = s->transport.lcl_port;
mp->proto = s->session_type;
mp->ckpair_index = s->ckpair_index;
mp->vrf = s->vrf;
if (s->flags & VCL_SESSION_F_CONNECTED)
mp->flags = TRANSPORT_CFG_F_CONNECTED;
app_send_ctrl_evt_to_vpp (mq, app_evt);
}
static void
vcl_send_session_connect (vcl_worker_t * wrk, vcl_session_t * s)
{
app_session_evt_t _app_evt, *app_evt = &_app_evt;
session_connect_msg_t *mp;
svm_msg_q_t *mq;
mq = vcl_worker_ctrl_mq (wrk);
app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_CONNECT);
mp = (session_connect_msg_t *) app_evt->evt->data;
memset (mp, 0, sizeof (*mp));
mp->client_index = wrk->api_client_handle;
mp->context = s->session_index;
mp->wrk_index = wrk->vpp_wrk_index;
mp->is_ip4 = s->transport.is_ip4;
mp->parent_handle = s->parent_handle;
clib_memcpy_fast (&mp->ip, &s->transport.rmt_ip, sizeof (mp->ip));
clib_memcpy_fast (&mp->lcl_ip, &s->transport.lcl_ip, sizeof (mp->lcl_ip));
mp->port = s->transport.rmt_port;
mp->lcl_port = s->transport.lcl_port;
mp->proto = s->session_type;
mp->ckpair_index = s->ckpair_index;
mp->vrf = s->vrf;
if (s->flags & VCL_SESSION_F_CONNECTED)
mp->flags |= TRANSPORT_CFG_F_CONNECTED;
app_send_ctrl_evt_to_vpp (mq, app_evt);
}
void
vcl_send_session_unlisten (vcl_worker_t * wrk, vcl_session_t * s)
{
app_session_evt_t _app_evt, *app_evt = &_app_evt;
session_unlisten_msg_t *mp;
svm_msg_q_t *mq;
mq = vcl_worker_ctrl_mq (wrk);
app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_UNLISTEN);
mp = (session_unlisten_msg_t *) app_evt->evt->data;
memset (mp, 0, sizeof (*mp));
mp->client_index = wrk->api_client_handle;
mp->wrk_index = wrk->vpp_wrk_index;
mp->handle = s->vpp_handle;
mp->context = wrk->wrk_index;
app_send_ctrl_evt_to_vpp (mq, app_evt);
}
static void
vcl_send_session_disconnect (vcl_worker_t * wrk, vcl_session_t * s)
{
app_session_evt_t _app_evt, *app_evt = &_app_evt;
session_disconnect_msg_t *mp;
svm_msg_q_t *mq;
/* Send to thread that owns the session */
mq = s->vpp_evt_q;
app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_DISCONNECT);
mp = (session_disconnect_msg_t *) app_evt->evt->data;
memset (mp, 0, sizeof (*mp));
mp->client_index = wrk->api_client_handle;
mp->handle = s->vpp_handle;
app_send_ctrl_evt_to_vpp (mq, app_evt);
}
static void
vcl_send_app_detach (vcl_worker_t * wrk)
{
app_session_evt_t _app_evt, *app_evt = &_app_evt;
session_app_detach_msg_t *mp;
svm_msg_q_t *mq;
mq = vcl_worker_ctrl_mq (wrk);
app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_APP_DETACH);
mp = (session_app_detach_msg_t *) app_evt->evt->data;
memset (mp, 0, sizeof (*mp));
mp->client_index = wrk->api_client_handle;
app_send_ctrl_evt_to_vpp (mq, app_evt);
}
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 (vcl_worker_t * wrk, vcl_session_t * s,
int retval)
{
app_session_evt_t _app_evt, *app_evt = &_app_evt;
session_disconnected_reply_msg_t *rmp;
app_alloc_ctrl_evt_to_vpp (s->vpp_evt_q, app_evt,
SESSION_CTRL_EVT_DISCONNECTED_REPLY);
rmp = (session_disconnected_reply_msg_t *) app_evt->evt->data;
rmp->handle = s->vpp_handle;
rmp->context = wrk->api_client_handle;
rmp->retval = retval;
app_send_ctrl_evt_to_vpp (s->vpp_evt_q, app_evt);
}
static void
vcl_send_session_reset_reply (vcl_worker_t * wrk, vcl_session_t * s,
int retval)
{
app_session_evt_t _app_evt, *app_evt = &_app_evt;
session_reset_reply_msg_t *rmp;
app_alloc_ctrl_evt_to_vpp (s->vpp_evt_q, app_evt,
SESSION_CTRL_EVT_RESET_REPLY);
rmp = (session_reset_reply_msg_t *) app_evt->evt->data;
rmp->handle = s->vpp_handle;
rmp->context = wrk->api_client_handle;
rmp->retval = retval;
app_send_ctrl_evt_to_vpp (s->vpp_evt_q, 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;
app_alloc_ctrl_evt_to_vpp (s->vpp_evt_q, app_evt,
SESSION_CTRL_EVT_WORKER_UPDATE);
mp = (session_worker_update_msg_t *) app_evt->evt->data;
mp->client_index = wrk->api_client_handle;
mp->handle = s->vpp_handle;
mp->req_wrk_index = wrk->vpp_wrk_index;
mp->wrk_index = wrk_index;
app_send_ctrl_evt_to_vpp (s->vpp_evt_q, app_evt);
}
int
vcl_send_worker_rpc (u32 dst_wrk_index, void *data, u32 data_len)
{
app_session_evt_t _app_evt, *app_evt = &_app_evt;
session_app_wrk_rpc_msg_t *mp;
vcl_worker_t *dst_wrk, *wrk;
svm_msg_q_t *mq;
int ret = -1;
if (data_len > sizeof (mp->data))
goto done;
clib_spinlock_lock (&vcm->workers_lock);
dst_wrk = vcl_worker_get_if_valid (dst_wrk_index);
if (!dst_wrk)
goto done;
wrk = vcl_worker_get_current ();
mq = vcl_worker_ctrl_mq (wrk);
app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_APP_WRK_RPC);
mp = (session_app_wrk_rpc_msg_t *) app_evt->evt->data;
mp->client_index = wrk->api_client_handle;
mp->wrk_index = dst_wrk->vpp_wrk_index;
clib_memcpy (mp->data, data, data_len);
app_send_ctrl_evt_to_vpp (mq, app_evt);
ret = 0;
done:
clib_spinlock_unlock (&vcm->workers_lock);
return ret;
}
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_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_segment_attach_session (mp->segment_handle, mp->server_rx_fifo,
mp->server_tx_fifo,
mp->vpp_event_queue_address, 0, session))
{
VDBG (0, "failed to attach fifos for %u", session->session_index);
goto error;
}
session->vpp_handle = mp->handle;
session->session_state = VCL_STATE_READY;
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:
vcl_segment_attach_mq (vcl_vpp_worker_segment_handle (0),
mp->vpp_event_queue_address, mp->mq_index, &evt_q);
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)
{
vcl_session_t *session = 0;
u32 session_index;
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_session_error, mp->retval);
session->session_state = VCL_STATE_DETACHED;
session->vpp_handle = mp->handle;
return session_index;
}
session->vpp_handle = mp->handle;
if (vcl_segment_attach_session (mp->segment_handle, mp->server_rx_fifo,
mp->server_tx_fifo,
mp->vpp_event_queue_address, 0, session))
{
VDBG (0, "failed to attach fifos for %u", session->session_index);
session->session_state = VCL_STATE_DETACHED;
vcl_send_session_disconnect (wrk, session);
return session_index;
}
if (mp->ct_rx_fifo)
{
if (vcl_segment_attach_session (mp->ct_segment_handle, mp->ct_rx_fifo,
mp->ct_tx_fifo, (uword) ~0, 1, session))
{
VDBG (0, "failed to attach ct fifos for %u", session->session_index);
session->session_state = VCL_STATE_DETACHED;
vcl_send_session_disconnect (wrk, session);
return session_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;
/* Application closed session before connect reply */
if (vcl_session_has_attr (session, VCL_SESS_ATTR_NONBLOCK)
&& session->session_state == VCL_STATE_CLOSED)
vcl_send_session_disconnect (wrk, session);
else
session->session_state = VCL_STATE_READY;
/* 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 == VCL_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;
}
if (session->session_state != VCL_STATE_CLOSED)
session->session_state = VCL_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_session_error, mp->retval);
if (session)
{
session->session_state = VCL_STATE_DETACHED;
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 = VCL_STATE_LISTEN;
if (vcl_session_is_cl (session))
{
if (vcl_segment_attach_session (mp->segment_handle, mp->rx_fifo,
mp->tx_fifo, mp->vpp_evt_q, 0, session))
{
VDBG (0, "failed to attach fifos for %u", session->session_index);
session->session_state = VCL_STATE_DETACHED;
return VCL_INVALID_SESSION_INDEX;
}
}
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)
{
VDBG (0, "Unlisten reply with wrong handle %llx", mp->handle);
return;
}
if (s->session_state != VCL_STATE_DISCONNECT)
{
/* Connected udp listener */
if (s->session_type == VPPCOM_PROTO_UDP
&& s->session_state == VCL_STATE_CLOSED)
return;
VDBG (0, "Unlisten session in wrong state %llx", mp->handle);
return;
}
if (mp->retval)
VDBG (0, "ERROR: session %u [0xllx]: unlisten failed: %U",
s->session_index, mp->handle, format_session_error, 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 void
vcl_session_migrated_handler (vcl_worker_t * wrk, void *data)
{
session_migrated_msg_t *mp = (session_migrated_msg_t *) data;
vcl_session_t *s;
u32 fs_index;
s = vcl_session_get_w_vpp_handle (wrk, mp->handle);
if (!s)
{
VDBG (0, "Migrated notification with wrong handle %llx", mp->handle);
return;
}
fs_index = vcl_segment_table_lookup (mp->segment_handle);
if (fs_index == VCL_INVALID_SEGMENT_INDEX)
{
VDBG (0, "segment for session %u is not mounted!", s->session_index);
s->session_state = VCL_STATE_DETACHED;
return;
}
s->vpp_handle = mp->new_handle;
vcl_segment_attach_mq (vcl_vpp_worker_segment_handle (0), mp->vpp_evt_q,
mp->vpp_thread_index, &s->vpp_evt_q);
vcl_session_table_del_vpp_handle (wrk, mp->handle);
vcl_session_table_add_vpp_handle (wrk, mp->new_handle, s->session_index);
/* Generate new tx event if we have outstanding data */
if (svm_fifo_has_event (s->tx_fifo))
app_send_io_evt_to_vpp (s->vpp_evt_q,
s->tx_fifo->shr->master_session_index,
SESSION_IO_EVT_TX, SVM_Q_WAIT);
VDBG (0, "Migrated 0x%lx to thread %u 0x%lx", mp->handle,
mp->vpp_thread_index, mp->new_handle);
}
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->flags = 0;
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;
}
/* Late disconnect notification on a session that has been closed */
if (session->session_state == VCL_STATE_CLOSED)
return 0;
/* Caught a disconnect before actually accepting the session */
if (session->session_state == VCL_STATE_LISTEN)
{
if (!vcl_flag_accepted_session (session, msg->handle,
VCL_ACCEPTED_F_CLOSED))
VDBG (0, "session was not accepted!");
return 0;
}
/* If not already reset change state */
if (session->session_state != VCL_STATE_DISCONNECT)
session->session_state = VCL_STATE_VPP_CLOSING;
return session;
}
static int
vppcom_session_disconnect (u32 session_handle)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
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 == VCL_STATE_LISTEN))
{
VDBG (0, "ERROR: Cannot disconnect a listen socket!");
return VPPCOM_EBADFD;
}
if (state == VCL_STATE_VPP_CLOSING)
{
vcl_send_session_disconnected_reply (wrk, session, 0);
VDBG (1, "session %u [0x%llx]: sending disconnect REPLY...",
session->session_index, vpp_handle);
}
else
{
/* Session doesn't have an event queue yet. Probably a non-blocking
* connect. Wait for the reply */
if (PREDICT_FALSE (!session->vpp_evt_q))
return VPPCOM_OK;
VDBG (1, "session %u [0x%llx]: sending disconnect...",
session->session_index, vpp_handle);
vcl_send_session_disconnect (wrk, session);
}
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;
}
static void
vcl_session_cleanup_handler (vcl_worker_t * wrk, void *data)
{
session_cleanup_msg_t *msg;
vcl_session_t *session;
msg = (session_cleanup_msg_t *) data;
session = vcl_session_get_w_vpp_handle (wrk, msg->handle);
if (!session)
{
VDBG (0, "disconnect confirmed for unknown handle 0x%llx", msg->handle);
return;
}
if (msg->type == SESSION_CLEANUP_TRANSPORT)
{
/* Transport was cleaned up before we confirmed close. Probably the
* app is still waiting for some data that cannot be delivered.
* Confirm close to make sure everything is cleaned up.
* Move to undetermined state to ensure that the session is not
* removed before both vpp and the app cleanup.
* - If the app closes first, the session is moved to CLOSED state
* and the session cleanup notification from vpp removes the
* session.
* - If vpp cleans up the session first, the session is moved to
* DETACHED state lower and subsequently the close from the app
* frees the session
*/
if (session->session_state == VCL_STATE_VPP_CLOSING)
{
vppcom_session_disconnect (vcl_session_handle (session));
session->session_state = VCL_STATE_UPDATED;
}
else if (session->session_state == VCL_STATE_DISCONNECT)
{
vcl_send_session_reset_reply (wrk, session, 0);
session->session_state = VCL_STATE_UPDATED;
}
return;
}
vcl_session_table_del_vpp_handle (wrk, msg->handle);
/* Should not happen. App did not close the connection so don't free it. */
if (session->session_state != VCL_STATE_CLOSED)
{
VDBG (0, "app did not close session %d", session->session_index);
session->session_state = VCL_STATE_DETACHED;
session->vpp_handle = VCL_INVALID_SESSION_HANDLE;
return;
}
vcl_session_free (wrk, 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 (s->rx_fifo)
{
if (vcl_segment_attach_session (msg->segment_handle, msg->rx_fifo,
msg->tx_fifo, (uword) ~0, 0, s))
{
VDBG (0, "failed to attach fifos for %u", s->session_index);
return;
}
}
s->session_state = VCL_STATE_UPDATED;
VDBG (0, "session %u[0x%llx] moved to worker %u", s->session_index,
s->vpp_handle, wrk->wrk_index);
}
static int
vcl_api_recv_fd (vcl_worker_t * wrk, int *fds, int n_fds)
{
if (vcm->cfg.vpp_app_socket_api)
return vcl_sapi_recv_fds (wrk, fds, n_fds);
return vcl_bapi_recv_fds (wrk, fds, n_fds);
}
static void
vcl_session_app_add_segment_handler (vcl_worker_t * wrk, void *data)
{
ssvm_segment_type_t seg_type = SSVM_SEGMENT_SHM;
session_app_add_segment_msg_t *msg;
u64 segment_handle;
int fd = -1;
msg = (session_app_add_segment_msg_t *) data;
if (msg->fd_flags)
{
vcl_api_recv_fd (wrk, &fd, 1);
seg_type = SSVM_SEGMENT_MEMFD;
}
segment_handle = msg->segment_handle;
if (segment_handle == VCL_INVALID_SEGMENT_HANDLE)
{
clib_warning ("invalid segment handle");
return;
}
if (vcl_segment_attach (segment_handle, (char *) msg->segment_name,
seg_type, fd))
{
VDBG (0, "vcl_segment_attach ('%s') failed", msg->segment_name);
return;
}
VDBG (1, "mapped new segment '%s' size %d", msg->segment_name,
msg->segment_size);
}
static void
vcl_session_app_del_segment_handler (vcl_worker_t * wrk, void *data)
{
session_app_del_segment_msg_t *msg = (session_app_del_segment_msg_t *) data;
vcl_segment_detach (msg->segment_handle);
VDBG (1, "Unmapped segment: %d", msg->segment_handle);
}
static void
vcl_worker_rpc_handler (vcl_worker_t * wrk, void *data)
{
if (!vcm->wrk_rpc_fn)
return;
(vcm->wrk_rpc_fn) (((session_app_wrk_rpc_msg_t *) data)->data);
}
static int
vcl_handle_mq_event (vcl_worker_t * wrk, session_event_t * e)
{
session_disconnected_msg_t *disconnected_msg;
session_connected_msg_t *connected_msg;
session_reset_msg_t *reset_msg;
session_event_t *ecpy;
vcl_session_t *s;
u32 sid;
switch (e->event_type)
{
case SESSION_IO_EVT_RX:
case SESSION_IO_EVT_TX:
s = vcl_session_get (wrk, e->session_index);
if (!s || !vcl_session_is_open (s))
break;
vec_add1 (wrk->unhandled_evts_vector, *e);
break;
case SESSION_CTRL_EVT_BOUND:
/* We can only wait for only one listen so not postponed */
vcl_session_bound_handler (wrk, (session_bound_msg_t *) e->data);
break;
case SESSION_CTRL_EVT_ACCEPTED:
s = vcl_session_accepted (wrk, (session_accepted_msg_t *) e->data);
if (vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK))
{
vec_add2 (wrk->unhandled_evts_vector, ecpy, 1);
*ecpy = *e;
ecpy->postponed = 1;
ecpy->session_index = s->session_index;
}
break;
case SESSION_CTRL_EVT_CONNECTED:
connected_msg = (session_connected_msg_t *) e->data;
sid = vcl_session_connected_handler (wrk, connected_msg);
if (!(s = vcl_session_get (wrk, sid)))
break;
if (vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK))
{
vec_add2 (wrk->unhandled_evts_vector, ecpy, 1);
*ecpy = *e;
ecpy->postponed = 1;
ecpy->session_index = s->session_index;
}
break;
case SESSION_CTRL_EVT_DISCONNECTED:
disconnected_msg = (session_disconnected_msg_t *) e->data;
if (!(s = vcl_session_get_w_vpp_handle (wrk, disconnected_msg->handle)))
break;
if (vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK))
{
vec_add1 (wrk->unhandled_evts_vector, *e);
break;
}
if (!(s = vcl_session_disconnected_handler (wrk, disconnected_msg)))
break;
VDBG (0, "disconnected session %u [0x%llx]", s->session_index,
s->vpp_handle);
break;
case SESSION_CTRL_EVT_RESET:
reset_msg = (session_reset_msg_t *) e->data;
if (!(s = vcl_session_get_w_vpp_handle (wrk, reset_msg->handle)))
break;
if (vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK))
{
vec_add1 (wrk->unhandled_evts_vector, *e);
break;
}
vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
break;
case SESSION_CTRL_EVT_UNLISTEN_REPLY:
vcl_session_unlisten_reply_handler (wrk, e->data);
break;
case SESSION_CTRL_EVT_MIGRATED:
vcl_session_migrated_handler (wrk, e->data);
break;
case SESSION_CTRL_EVT_CLEANUP:
vcl_session_cleanup_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;
case SESSION_CTRL_EVT_APP_ADD_SEGMENT:
vcl_session_app_add_segment_handler (wrk, e->data);
break;
case SESSION_CTRL_EVT_APP_DEL_SEGMENT:
vcl_session_app_del_segment_handler (wrk, e->data);
break;
case SESSION_CTRL_EVT_APP_WRK_RPC:
vcl_worker_rpc_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 == VCL_STATE_DETACHED)
{
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, VCL_STATE_UPDATED,
5);
s->session_state = state;
}
vec_reset_length (wrk->pending_session_wrk_updates);
}
void
vcl_worker_flush_mq_events (vcl_worker_t *wrk)
{
svm_msg_q_msg_t *msg;
session_event_t *e;
svm_msg_q_t *mq;
int i;
mq = wrk->app_event_queue;
vcl_mq_dequeue_batch (wrk, mq, ~0);
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);
}
void
vcl_flush_mq_events (void)
{
vcl_worker_flush_mq_events (vcl_worker_get_current ());
}
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;
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,
accepted_msg->handle, -1);
}
clib_fifo_free (session->accept_evts_fifo);
vcl_send_session_unlisten (wrk, session);
VDBG (1, "session %u [0x%llx]: sending unbind!", session->session_index,
session->vpp_handle);
vcl_evt (VCL_EVT_UNBIND, session);
session->vpp_handle = ~0;
session->session_state = VCL_STATE_DISCONNECT;
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);
}
static int
vcl_api_attach (void)
{
if (vcm->cfg.vpp_app_socket_api)
return vcl_sapi_attach ();
return vcl_bapi_attach ();
}
static void
vcl_api_detach (vcl_worker_t * wrk)
{
vcl_send_app_detach (wrk);
if (vcm->cfg.vpp_app_socket_api)
return vcl_sapi_detach (wrk);
return vcl_bapi_disconnect_from_vpp ();
}
/*
* VPPCOM Public API functions
*/
int
vppcom_app_create (const 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);
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);
vcl_elog_init (vcm);
/* Allocate default worker */
vcl_worker_alloc_and_init ();
if ((rv = vcl_api_attach ()))
return rv;
VDBG (0, "app_name '%s', my_client_index %d (0x%x)", app_name,
vcm->workers[0].api_client_handle, vcm->workers[0].api_client_handle);
return VPPCOM_OK;
}
void
vppcom_app_destroy (void)
{
vcl_worker_t *wrk, *current_wrk;
void *heap;
if (!pool_elts (vcm->workers))
return;
vcl_evt (VCL_EVT_DETACH, vcm);
current_wrk = vcl_worker_get_current ();
/* *INDENT-OFF* */
pool_foreach (wrk, vcm->workers) {
if (current_wrk != wrk)
vcl_worker_cleanup (wrk, 0 /* notify vpp */ );
}
/* *INDENT-ON* */
vcl_api_detach (current_wrk);
vcl_worker_cleanup (current_wrk, 0 /* notify vpp */ );
vcl_elog_stop (vcm);
/*
* Free the heap and fix vcm
*/
heap = clib_mem_get_heap ();
munmap (clib_mem_get_heap_base (heap), clib_mem_get_heap_size (heap));
vcm = &_vppcom_main;
vcm->is_init = 0;
}
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 = VCL_STATE_CLOSED;
session->vpp_handle = ~0;
session->ckpair_index = ~0;
session->is_dgram = vcl_proto_is_dgram (proto);
if (is_nonblocking)
vcl_session_set_attr (session, 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 * s,
vcl_session_handle_t sh, u8 do_disconnect)
{
int rv = VPPCOM_OK;
VDBG (1, "session %u [0x%llx] closing", s->session_index, s->vpp_handle);
if (s->flags & VCL_SESSION_F_IS_VEP)
{
u32 next_sh = s->vep.next_sh;
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)", s->vpp_handle, next_sh,
s->vep.vep_sh, rv, vppcom_retval_str (rv));
next_sh = s->vep.next_sh;
}
goto free_session;
}
if (s->flags & VCL_SESSION_F_IS_VEP_SESSION)
{
rv = vppcom_epoll_ctl (s->vep.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)", s->session_index, s->vpp_handle,
s->vep.vep_sh, rv, vppcom_retval_str (rv));
}
if (!do_disconnect)
{
VDBG (1, "session %u [0x%llx] disconnect skipped",
s->session_index, s->vpp_handle);
goto cleanup;
}
if (s->session_state == VCL_STATE_LISTEN)
{
rv = vppcom_session_unbind (sh);
if (PREDICT_FALSE (rv < 0))
VDBG (0, "session %u [0x%llx]: listener unbind failed! "
"rv %d (%s)", s->session_index, s->vpp_handle, rv,
vppcom_retval_str (rv));
return rv;
}
else if (vcl_session_is_ready (s)
|| (vcl_session_is_connectable_listener (wrk, s)))
{
rv = vppcom_session_disconnect (sh);
if (PREDICT_FALSE (rv < 0))
VDBG (0, "ERROR: session %u [0x%llx]: disconnect failed!"
" rv %d (%s)", s->session_index, s->vpp_handle,
rv, vppcom_retval_str (rv));
}
else if (s->session_state == VCL_STATE_DISCONNECT)
{
vcl_send_session_reset_reply (wrk, s, 0);
}
else if (s->session_state == VCL_STATE_DETACHED)
{
/* Should not happen. VPP cleaned up before app confirmed close */
VDBG (0, "vpp freed session %d before close", s->session_index);
goto free_session;
}
s->session_state = VCL_STATE_CLOSED;
/* Session is removed only after vpp confirms the disconnect */
return rv;
cleanup:
vcl_session_table_del_vpp_handle (wrk, s->vpp_handle);
free_session:
vcl_session_free (wrk, s);
vcl_evt (VCL_EVT_CLOSE, s, 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->flags & VCL_SESSION_F_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->flags & VCL_SESSION_F_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 == VCL_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
*/
vcl_send_session_listen (wrk, listen_session);
rv = vppcom_wait_for_session_state_change (listen_session->session_index,
VCL_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;
}
static int
validate_args_session_accept_ (vcl_worker_t * wrk, vcl_session_t * ls)
{
if (ls->flags & VCL_SESSION_F_IS_VEP)
{
VDBG (0, "ERROR: cannot accept on epoll session %u!",
ls->session_index);
return VPPCOM_EBADFD;
}
if ((ls->session_state != VCL_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, "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;
u8 is_nonblocking;
int rv;
again:
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_session_has_attr (listen_session,
VCL_SESS_ATTR_NONBLOCK);
while (1)
{
if (svm_msg_q_is_empty (wrk->app_event_queue) && is_nonblocking)
return VPPCOM_EAGAIN;
svm_msg_q_wait (wrk->app_event_queue, SVM_MQ_WAIT_EMPTY);
vcl_worker_flush_mq_events (wrk);
goto again;
}
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_session_set_attr (client_session, 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_session_has_attr (client_session, 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 = VCL_STATE_VPP_CLOSING;
else if (accept_flags & VCL_ACCEPTED_F_RESET)
client_session->session_state = VCL_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->flags & VCL_SESSION_F_IS_VEP))
{
VDBG (0, "ERROR: cannot connect epoll session %u!",
session->session_index);
return VPPCOM_EBADFD;
}
if (PREDICT_FALSE (vcl_session_is_ready (session)))
{
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;
}
/* Attempt to connect a connectionless listener */
if (PREDICT_FALSE (session->session_state == VCL_STATE_LISTEN))
{
if (session->session_type != VPPCOM_PROTO_UDP)
return VPPCOM_EINVAL;
vcl_send_session_unlisten (wrk, session);
session->session_state = VCL_STATE_CLOSED;
}
session->transport.is_ip4 = server_ep->is_ip4;
vcl_ip_copy_from_ep (&session->transport.rmt_ip, server_ep);
session->transport.rmt_port = server_ep->port;
session->parent_handle = VCL_INVALID_SESSION_HANDLE;
session->flags |= VCL_SESSION_F_CONNECTED;
VDBG (0, "session handle %u (%s): connecting to peer %s %U "
"port %d proto %s", session_handle,
vppcom_session_state_str (session->session_state),
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));
vcl_send_session_connect (wrk, session);
if (vcl_session_has_attr (session, VCL_SESS_ATTR_NONBLOCK))
{
/* State set to STATE_UPDATED to ensure the session is not assumed
* to be ready and to also allow the app to close it prior to vpp's
* connected reply. */
session->session_state = VCL_STATE_UPDATED;
return VPPCOM_EINPROGRESS;
}
/*
* Wait for reply from vpp if blocking
*/
rv = vppcom_wait_for_session_state_change (session_index, VCL_STATE_READY,
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->flags & VCL_SESSION_F_IS_VEP))
{
VDBG (0, "ERROR: cannot connect epoll session %u!",
session->session_index);
return VPPCOM_EBADFD;
}
if (PREDICT_FALSE (vcl_session_is_ready (session)))
{
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
*/
vcl_send_session_connect (wrk, session);
rv = vppcom_wait_for_session_state_change (session_index, VCL_STATE_READY,
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 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 rv, n_read = 0, is_nonblocking;
vcl_session_t *s = 0;
svm_fifo_t *rx_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 || (s->flags & VCL_SESSION_F_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_session_has_attr (s, 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->flags &= ~VCL_SESSION_F_HAS_RX_EVT;
if (svm_fifo_is_empty_cons (rx_fifo))
{
if (is_nonblocking)
{
if (vcl_session_is_closing (s))
return vcl_session_closing_error (s);
if (is_ct)
svm_fifo_unset_event (s->rx_fifo);
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);
if (is_ct)
svm_fifo_unset_event (s->rx_fifo);
svm_fifo_unset_event (rx_fifo);
svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY);
vcl_worker_flush_mq_events (wrk);
}
}
read_again:
if (s->is_dgram)
rv = app_recv_dgram_raw (rx_fifo, buf, n, &s->transport, 0, peek);
else
rv = app_recv_stream_raw (rx_fifo, buf, n, 0, peek);
ASSERT (rv >= 0);
n_read += rv;
if (svm_fifo_is_empty_cons (rx_fifo))
{
if (is_ct)
svm_fifo_unset_event (s->rx_fifo);
svm_fifo_unset_event (rx_fifo);
if (!svm_fifo_is_empty_cons (rx_fifo)
&& svm_fifo_set_event (rx_fifo) && is_nonblocking)
{
vec_add2 (wrk->unhandled_evts_vector, e, 1);
e->event_type = SESSION_IO_EVT_RX;
e->session_index = s->session_index;
}
}
else if (PREDICT_FALSE (rv < n && !s->is_dgram))
{
/* More data enqueued while reading. Try to drain it
* or fill the buffer. Avoid doing that for dgrams */
buf += rv;
n -= rv;
goto read_again;
}
if (PREDICT_FALSE (svm_fifo_needs_deq_ntf (rx_fifo, n_read)))
{
svm_fifo_clear_deq_ntf (rx_fifo);
app_send_io_evt_to_vpp (s->vpp_evt_q,
s->rx_fifo->shr->master_session_index,
SESSION_IO_EVT_RX, SVM_Q_WAIT);
}
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_segment_t * ds, uint32_t n_segments,
uint32_t max_bytes)
{
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_t *mq;
u8 is_ct;
s = vcl_session_get_w_handle (wrk, session_handle);
if (PREDICT_FALSE (!s || (s->flags & VCL_SESSION_F_IS_VEP)))
return VPPCOM_EBADFD;
if (PREDICT_FALSE (!vcl_session_is_open (s)))
return vcl_session_closed_error (s);
is_nonblocking = vcl_session_has_attr (s, 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->flags &= ~VCL_SESSION_F_HAS_RX_EVT;
if (svm_fifo_is_empty_cons (rx_fifo))
{
if (is_nonblocking)
{
if (is_ct)
svm_fifo_unset_event (s->rx_fifo);
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);
if (is_ct)
svm_fifo_unset_event (s->rx_fifo);
svm_fifo_unset_event (rx_fifo);
svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY);
vcl_worker_flush_mq_events (wrk);
}
}
n_read = svm_fifo_segments (rx_fifo, s->rx_bytes_pending,
(svm_fifo_seg_t *) ds, n_segments, max_bytes);
if (n_read < 0)
return VPPCOM_EAGAIN;
if (svm_fifo_max_dequeue_cons (rx_fifo) == n_read)
{
if (is_ct)
svm_fifo_unset_event (s->rx_fifo);
svm_fifo_unset_event (rx_fifo);
if (svm_fifo_max_dequeue_cons (rx_fifo) != n_read
&& svm_fifo_set_event (rx_fifo)
&& vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK))
{
session_event_t *e;
vec_add2 (wrk->unhandled_evts_vector, e, 1);
e->event_type = SESSION_IO_EVT_RX;
e->session_index = s->session_index;
}
}
s->rx_bytes_pending += n_read;
return n_read;
}
void
vppcom_session_free_segments (uint32_t session_handle, uint32_t n_bytes)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
vcl_session_t *s;
u8 is_ct;
s = vcl_session_get_w_handle (wrk, session_handle);
if (PREDICT_FALSE (!s || (s->flags & VCL_SESSION_F_IS_VEP)))
return;
is_ct = vcl_session_is_ct (s);
svm_fifo_dequeue_drop (is_ct ? s->ct_rx_fifo : s->rx_fifo, n_bytes);
ASSERT (s->rx_bytes_pending < n_bytes);
s->rx_bytes_pending -= n_bytes;
}
always_inline u8
vcl_fifo_is_writeable (svm_fifo_t * f, u32 len, u8 is_dgram)
{
u32 max_enq = svm_fifo_max_enqueue_prod (f);
if (is_dgram)
return max_enq >= (sizeof (session_dgram_hdr_t) + len);
else
return max_enq > 0;
}
always_inline int
vppcom_session_write_inline (vcl_worker_t * wrk, vcl_session_t * s, void *buf,
size_t n, u8 is_flush, u8 is_dgram)
{
int n_write, is_nonblocking;
session_evt_type_t et;
svm_fifo_t *tx_fifo;
svm_msg_q_t *mq;
u8 is_ct;
if (PREDICT_FALSE (!buf || n == 0))
return VPPCOM_EINVAL;
if (PREDICT_FALSE (s->flags & VCL_SESSION_F_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_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK);
mq = wrk->app_event_queue;
if (!vcl_fifo_is_writeable (tx_fifo, n, is_dgram))
{
if (is_nonblocking)
{
return VPPCOM_EWOULDBLOCK;
}
while (!vcl_fifo_is_writeable (tx_fifo, n, is_dgram))
{
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_wait (mq, SVM_MQ_WAIT_EMPTY);
vcl_worker_flush_mq_events (wrk);
}
}
et = SESSION_IO_EVT_TX;
if (is_flush && !is_ct)
et = SESSION_IO_EVT_TX_FLUSH;
if (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->shr->master_session_index, et, SVM_Q_WAIT);
/* The underlying fifo segment can run out of memory */
if (PREDICT_FALSE (n_write < 0))
return VPPCOM_EAGAIN;
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)
{
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))
return VPPCOM_EBADFD;
return vppcom_session_write_inline (wrk, s, buf, n,
0 /* is_flush */ , s->is_dgram ? 1 : 0);
}
int
vppcom_session_write_msg (uint32_t session_handle, void *buf, size_t n)
{
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))
return VPPCOM_EBADFD;
return vppcom_session_write_inline (wrk, s, buf, n,
1 /* is_flush */ , s->is_dgram ? 1 : 0);
}
#define vcl_fifo_rx_evt_valid_or_break(_s) \
if (PREDICT_FALSE (!_s->rx_fifo)) \
break; \
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->rx_fifo); /* rx evts on actual 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 *s;
u32 sid;
switch (e->event_type)
{
case SESSION_IO_EVT_RX:
sid = e->session_index;
s = vcl_session_get (wrk, sid);
if (!s || !vcl_session_is_open (s))
break;
vcl_fifo_rx_evt_valid_or_break (s);
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;
s = vcl_session_get (wrk, sid);
if (!s || !vcl_session_is_open (s))
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:
if (!e->postponed)
s = vcl_session_accepted (wrk, (session_accepted_msg_t *) e->data);
else
s = vcl_session_get (wrk, e->session_index);
if (!s)
break;
sid = s->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:
if (!e->postponed)
{
connected_msg = (session_connected_msg_t *) e->data;
sid = vcl_session_connected_handler (wrk, connected_msg);
}
else
sid = e->session_index;
if (sid == VCL_INVALID_SESSION_INDEX)
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_DISCONNECTED:
disconnected_msg = (session_disconnected_msg_t *) e->data;
s = vcl_session_disconnected_handler (wrk, disconnected_msg);
if (!s)
break;
sid = s->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_MIGRATED:
vcl_session_migrated_handler (wrk, e->data);
break;
case SESSION_CTRL_EVT_CLEANUP:
vcl_session_cleanup_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;
case SESSION_CTRL_EVT_APP_ADD_SEGMENT:
vcl_session_app_add_segment_handler (wrk, e->data);
break;
case SESSION_CTRL_EVT_APP_DEL_SEGMENT:
vcl_session_app_del_segment_handler (wrk, e->data);
break;
case SESSION_CTRL_EVT_APP_WRK_RPC:
vcl_worker_rpc_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;
if (svm_msg_q_is_empty (mq))
{
if (*bits_set)
return 0;
if (!time_to_wait)
return 0;
else if (time_to_wait < 0)
svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY);
else
{
if (svm_msg_q_timedwait (mq, time_to_wait))
return 0;
}
}
vcl_mq_dequeue_batch (wrk, mq, ~0);
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 *s = 0;
int 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;
clib_bitmap_foreach (sid, wrk->wr_bitmap)
{
if (!(s = vcl_session_get (wrk, sid)))
{
clib_bitmap_set_no_check ((uword *) write_map, sid, 1);
bits_set++;
continue;
}
if (vcl_session_write_ready (s))
{
clib_bitmap_set_no_check ((uword *) write_map, sid, 1);
bits_set++;
}
else
{
svm_fifo_t *txf = vcl_session_is_ct (s) ? s->ct_tx_fifo : s->tx_fifo;
svm_fifo_add_want_deq_ntf (txf, SVM_FIFO_WANT_DEQ_NOTIF);
}
}
check_rd:
if (!read_map)
goto check_mq;
clib_bitmap_foreach (sid, wrk->rd_bitmap)
{
if (!(s = vcl_session_get (wrk, sid)))
{
clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
bits_set++;
continue;
}
if (vcl_session_read_ready (s))
{
clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
bits_set++;
}
}
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_handle)
{
vppcom_epoll_t *vep;
u32 sh = vep_handle;
vcl_session_t *s;
if (VPPCOM_DEBUG <= 2)
return;
s = vcl_session_get_w_handle (wrk, vep_handle);
if (PREDICT_FALSE (!s))
{
VDBG (0, "ERROR: Invalid vep_sh (%u)!", vep_handle);
goto done;
}
if (PREDICT_FALSE (!(s->flags & VCL_SESSION_F_IS_VEP)))
{
VDBG (0, "ERROR: vep_sh (%u) is not a vep!", vep_handle);
goto done;
}
vep = &s->vep;
VDBG (0, "vep_sh (%u): Dumping epoll chain\n"
"{\n"
" is_vep = %u\n"
" is_vep_session = %u\n"
" next_sh = 0x%x (%u)\n"
"}\n", vep_handle, s->flags & VCL_SESSION_F_IS_VEP,
s->flags & VCL_SESSION_F_IS_VEP_SESSION, vep->next_sh, vep->next_sh);
for (sh = vep->next_sh; sh != ~0; sh = vep->next_sh)
{
s = vcl_session_get_w_handle (wrk, sh);
if (PREDICT_FALSE (!s))
{
VDBG (0, "ERROR: Invalid sh (%u)!", sh);
goto done;
}
if (PREDICT_FALSE (s->flags & VCL_SESSION_F_IS_VEP))
{
VDBG (0, "ERROR: sh (%u) is a vep!", vep_handle);
}
else if (PREDICT_FALSE (!(s->flags & VCL_SESSION_F_IS_VEP_SESSION)))
{
VDBG (0, "ERROR: sh (%u) is not a vep session handle!", sh);
goto done;
}
vep = &s->vep;
if (PREDICT_FALSE (vep->vep_sh != vep_handle))
VDBG (0, "ERROR: session (%u) vep_sh (%u) != vep_sh (%u)!",
sh, s->vep.vep_sh, vep_handle);
if (s->flags & VCL_SESSION_F_IS_VEP_SESSION)
{
VDBG (0, "vep_sh[%u]: sh 0x%x (%u)\n"
"{\n"
" next_sh = 0x%x (%u)\n"
" prev_sh = 0x%x (%u)\n"
" vep_sh = 0x%x (%u)\n"
" ev.events = 0x%x\n"
" ev.data.u64 = 0x%llx\n"
" et_mask = 0x%x\n"
"}\n",
vep_handle, sh, sh, 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_sh (%u): Dump complete!\n", vep_handle);
}
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->flags |= VCL_SESSION_F_IS_VEP;
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;
int rv = VPPCOM_OK;
vcl_session_t *s;
svm_fifo_t *txf;
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->flags & VCL_SESSION_F_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);
s = vcl_session_get_w_handle (wrk, session_handle);
if (PREDICT_FALSE (!s))
{
VDBG (0, "Invalid session_handle (%u)!", session_handle);
return VPPCOM_EBADFD;
}
if (PREDICT_FALSE (s->flags & VCL_SESSION_F_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;
}
s->vep.next_sh = vep_session->vep.next_sh;
s->vep.prev_sh = vep_handle;
s->vep.vep_sh = vep_handle;
s->vep.et_mask = VEP_DEFAULT_ET_MASK;
s->vep.ev = *event;
s->flags &= ~VCL_SESSION_F_IS_VEP;
s->flags |= VCL_SESSION_F_IS_VEP_SESSION;
vep_session->vep.next_sh = session_handle;
txf = vcl_session_is_ct (s) ? s->ct_tx_fifo : s->tx_fifo;
if (txf && (event->events & EPOLLOUT))
svm_fifo_add_want_deq_ntf (txf, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
/* Generate EPOLLOUT if tx fifo not full */
if ((event->events & EPOLLOUT) && (vcl_session_write_ready (s) > 0))
{
session_event_t e = { 0 };
e.event_type = SESSION_IO_EVT_TX;
e.session_index = s->session_index;
vec_add1 (wrk->unhandled_evts_vector, e);
}
/* Generate EPOLLIN if rx fifo has data */
if ((event->events & EPOLLIN) && (vcl_session_read_ready (s) > 0))
{
session_event_t e = { 0 };
e.event_type = SESSION_IO_EVT_RX;
e.session_index = s->session_index;
vec_add1 (wrk->unhandled_evts_vector, e);
}
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, s, 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 (!(s->flags & VCL_SESSION_F_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 (s->vep.vep_sh != vep_handle))
{
VDBG (0, "EPOLL_CTL_MOD: sh %u vep_sh (%u) != vep_sh (%u)!",
session_handle, s->vep.vep_sh, vep_handle);
rv = VPPCOM_EINVAL;
goto done;
}
/* Generate EPOLLOUT when tx_fifo/ct_tx_fifo not full */
if ((event->events & EPOLLOUT) &&
!(s->vep.ev.events & EPOLLOUT) && (vcl_session_write_ready (s) > 0))
{
session_event_t e = { 0 };
e.event_type = SESSION_IO_EVT_TX;
e.session_index = s->session_index;
vec_add1 (wrk->unhandled_evts_vector, e);
}
s->vep.et_mask = VEP_DEFAULT_ET_MASK;
s->vep.ev = *event;
txf = vcl_session_is_ct (s) ? s->ct_tx_fifo : s->tx_fifo;
if (event->events & EPOLLOUT)
svm_fifo_add_want_deq_ntf (txf, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
else
svm_fifo_del_want_deq_ntf (txf, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
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 (!(s->flags & VCL_SESSION_F_IS_VEP_SESSION)))
{
VDBG (0, "EPOLL_CTL_DEL: %u not a vep session!", session_handle);
rv = VPPCOM_EINVAL;
goto done;
}
else if (PREDICT_FALSE (s->vep.vep_sh != vep_handle))
{
VDBG (0, "EPOLL_CTL_DEL: sh %u vep_sh (%u) != vep_sh (%u)!",
session_handle, s->vep.vep_sh, vep_handle);
rv = VPPCOM_EINVAL;
goto done;
}
if (s->vep.prev_sh == vep_handle)
vep_session->vep.next_sh = s->vep.next_sh;
else
{
vcl_session_t *prev_session;
prev_session = vcl_session_get_w_handle (wrk, s->vep.prev_sh);
if (PREDICT_FALSE (!prev_session))
{
VDBG (0, "EPOLL_CTL_DEL: Invalid prev_sh (%u) on sh (%u)!",
s->vep.prev_sh, session_handle);
return VPPCOM_EBADFD;
}
ASSERT (prev_session->vep.next_sh == session_handle);
prev_session->vep.next_sh = s->vep.next_sh;
}
if (s->vep.next_sh != ~0)
{
vcl_session_t *next_session;
next_session = vcl_session_get_w_handle (wrk, s->vep.next_sh);
if (PREDICT_FALSE (!next_session))
{
VDBG (0, "EPOLL_CTL_DEL: Invalid next_sh (%u) on sh (%u)!",
s->vep.next_sh, session_handle);
return VPPCOM_EBADFD;
}
ASSERT (next_session->vep.prev_sh == session_handle);
next_session->vep.prev_sh = s->vep.prev_sh;
}
memset (&s->vep, 0, sizeof (s->vep));
s->vep.next_sh = ~0;
s->vep.prev_sh = ~0;
s->vep.vep_sh = ~0;
s->flags &= ~VCL_SESSION_F_IS_VEP_SESSION;
txf = vcl_session_is_ct (s) ? s->ct_tx_fifo : s->tx_fifo;
if (txf)
svm_fifo_del_want_deq_ntf (txf, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL);
VDBG (1, "EPOLL_CTL_DEL: vep_idx %u, sh %u!", vep_handle,
session_handle);
vcl_evt (VCL_EVT_EPOLL_CTLDEL, s, 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 *s;
u8 add_event = 0;
switch (e->event_type)
{
case SESSION_IO_EVT_RX:
sid = e->session_index;
s = vcl_session_get (wrk, sid);
if (vcl_session_is_closed (s))
break;
vcl_fifo_rx_evt_valid_or_break (s);
session_events = s->vep.ev.events;
if (!(EPOLLIN & s->vep.ev.events)
|| (s->flags & VCL_SESSION_F_HAS_RX_EVT))
break;
add_event = 1;
events[*num_ev].events |= EPOLLIN;
session_evt_data = s->vep.ev.data.u64;
s->flags |= VCL_SESSION_F_HAS_RX_EVT;
break;
case SESSION_IO_EVT_TX:
sid = e->session_index;
s = vcl_session_get (wrk, sid);
if (vcl_session_is_closed (s))
break;
session_events = s->vep.ev.events;
if (!(EPOLLOUT & session_events))
break;
add_event = 1;
events[*num_ev].events |= EPOLLOUT;
session_evt_data = s->vep.ev.data.u64;
svm_fifo_reset_has_deq_ntf (vcl_session_is_ct (s) ?
s->ct_tx_fifo : s->tx_fifo);
break;
case SESSION_CTRL_EVT_ACCEPTED:
if (!e->postponed)
s = vcl_session_accepted (wrk, (session_accepted_msg_t *) e->data);
else
s = vcl_session_get (wrk, e->session_index);
if (!s)
break;
session_events = s->vep.ev.events;
sid = s->session_index;
if (!(EPOLLIN & session_events))
break;
add_event = 1;
events[*num_ev].events |= EPOLLIN;
session_evt_data = s->vep.ev.data.u64;
break;
case SESSION_CTRL_EVT_CONNECTED:
if (!e->postponed)
{
connected_msg = (session_connected_msg_t *) e->data;
sid = vcl_session_connected_handler (wrk, connected_msg);
}
else
sid = e->session_index;
s = vcl_session_get (wrk, sid);
if (vcl_session_is_closed (s))
break;
session_events = s->vep.ev.events;
/* Generate EPOLLOUT because there's no connected event */
if (!(EPOLLOUT & session_events))
break;
add_event = 1;
events[*num_ev].events |= EPOLLOUT;
session_evt_data = s->vep.ev.data.u64;
if (s->session_state == VCL_STATE_DETACHED)
events[*num_ev].events |= EPOLLHUP;
break;
case SESSION_CTRL_EVT_DISCONNECTED:
disconnected_msg = (session_disconnected_msg_t *) e->data;
s = vcl_session_disconnected_handler (wrk, disconnected_msg);
if (vcl_session_is_closed (s))
break;
sid = s->session_index;
session_events = s->vep.ev.events;
add_event = 1;
events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
session_evt_data = s->vep.ev.data.u64;
break;
case SESSION_CTRL_EVT_RESET:
sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
s = vcl_session_get (wrk, sid);
if (vcl_session_is_closed (s))
break;
session_events = s->vep.ev.events;
add_event = 1;
events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
session_evt_data = s->vep.ev.data.u64;
break;
case SESSION_CTRL_EVT_UNLISTEN_REPLY:
vcl_session_unlisten_reply_handler (wrk, e->data);
break;
case SESSION_CTRL_EVT_MIGRATED:
vcl_session_migrated_handler (wrk, e->data);
break;
case SESSION_CTRL_EVT_CLEANUP:
vcl_session_cleanup_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;
case SESSION_CTRL_EVT_APP_ADD_SEGMENT:
vcl_session_app_add_segment_handler (wrk, e->data);
break;
case SESSION_CTRL_EVT_APP_DEL_SEGMENT:
vcl_session_app_del_segment_handler (wrk, e->data);
break;
case SESSION_CTRL_EVT_APP_WRK_RPC:
vcl_worker_rpc_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)
{
s = vcl_session_get (wrk, sid);
s->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;
if (svm_msg_q_is_empty (mq))
{
if (!wait_for_time)
return 0;
else if (wait_for_time < 0)
svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY);
else
{
if (svm_msg_q_timedwait (mq, wait_for_time / 1e3))
return 0;
}
}
ASSERT (maxevents > *num_ev);
vcl_mq_dequeue_batch (wrk, mq, ~0);
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);
if (*num_ev < maxevents)
vcl_epoll_wait_handle_mq_event (wrk, e, events, num_ev);
else
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);
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) * 1e3;
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)
{
double wait = 0, start = 0, now;
int __clib_unused n_read;
vcl_mq_evt_conn_t *mqc;
int n_mq_evts, i;
u64 buf;
vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns));
if (!n_evts)
{
wait = wait_for_time;
start = clib_time_now (&wrk->clib_time);
}
do
{
n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events,
vec_len (wrk->mq_events), wait);
if (n_mq_evts < 0)
{
VDBG (0, "epoll_wait error %u", errno);
return n_evts;
}
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)
return n_evts;
if (wait == -1)
continue;
now = clib_time_now (&wrk->clib_time);
wait -= (now - start) * 1e3;
start = now;
}
while (wait > 0);
return 0;
}
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->flags & VCL_SESSION_F_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 ();
u32 *flags = buffer, tmp_flags = 0;
vppcom_endpt_t *ep = buffer;
vcl_session_t *session;
int rv = VPPCOM_OK;
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_session_has_attr (session, VCL_SESS_ATTR_NONBLOCK) ?
O_NONBLOCK : 0);
*buflen = sizeof (*flags);
VDBG (2, "VPPCOM_ATTR_GET_FLAGS: sh %u, flags = 0x%08x, "
"is_nonblocking = %u", session_handle, *flags,
vcl_session_has_attr (session, 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_session_set_attr (session, VCL_SESS_ATTR_NONBLOCK);
else
vcl_session_clear_attr (session, VCL_SESS_ATTR_NONBLOCK);
VDBG (2, "VPPCOM_ATTR_SET_FLAGS: sh %u, flags = 0x%08x,"
" is_nonblocking = %u", session_handle, *flags,
vcl_session_has_attr (session, 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_SET_LCL_ADDR:
if (PREDICT_TRUE (buffer && buflen &&
(*buflen >= sizeof (*ep)) && ep->ip))
{
session->transport.is_ip4 = ep->is_ip4;
session->transport.lcl_port = ep->port;
vcl_ip_copy_from_ep (&session->transport.lcl_ip, ep);
*buflen = sizeof (*ep);
VDBG (1, "VPPCOM_ATTR_SET_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_session_has_attr (session,
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 ?
svm_fifo_size (session->tx_fifo) :
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 ?
svm_fifo_size (session->rx_fifo) :
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_session_has_attr (session,
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_session_has_attr (session, VCL_SESS_ATTR_LISTEN))
{
/* VPP-TBD */
if (*(int *) buffer)
vcl_session_set_attr (session, VCL_SESS_ATTR_REUSEADDR);
else
vcl_session_clear_attr (session, VCL_SESS_ATTR_REUSEADDR);
VDBG (2, "VPPCOM_ATTR_SET_REUSEADDR: %d, buflen %d, #VPP-TBD#",
vcl_session_has_attr (session, 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_session_has_attr (session,
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_session_has_attr (session, VCL_SESS_ATTR_LISTEN))
{
/* VPP-TBD */
if (*(int *) buffer)
vcl_session_set_attr (session, VCL_SESS_ATTR_REUSEPORT);
else
vcl_session_clear_attr (session, VCL_SESS_ATTR_REUSEPORT);
VDBG (2, "VPPCOM_ATTR_SET_REUSEPORT: %d, buflen %d, #VPP-TBD#",
vcl_session_has_attr (session, 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_session_has_attr (session,
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_session_set_attr (session, VCL_SESS_ATTR_BROADCAST);
else
vcl_session_clear_attr (session, VCL_SESS_ATTR_BROADCAST);
VDBG (2, "VPPCOM_ATTR_SET_BROADCAST: %d, buflen %d, #VPP-TBD#",
vcl_session_has_attr (session, 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_session_has_attr (session,
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_session_set_attr (session, VCL_SESS_ATTR_V6ONLY);
else
vcl_session_clear_attr (session, VCL_SESS_ATTR_V6ONLY);
VDBG (2, "VPPCOM_ATTR_SET_V6ONLY: %d, buflen %d, #VPP-TBD#",
vcl_session_has_attr (session, 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_session_has_attr (session,
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_session_set_attr (session, VCL_SESS_ATTR_KEEPALIVE);
else
vcl_session_clear_attr (session, VCL_SESS_ATTR_KEEPALIVE);
VDBG (2, "VPPCOM_ATTR_SET_KEEPALIVE: %d, buflen %d, #VPP-TBD#",
vcl_session_has_attr (session, 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_session_has_attr (session,
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_session_set_attr (session, VCL_SESS_ATTR_TCP_NODELAY);
else
vcl_session_clear_attr (session, VCL_SESS_ATTR_TCP_NODELAY);
VDBG (2, "VPPCOM_ATTR_SET_TCP_NODELAY: %d, buflen %d, #VPP-TBD#",
vcl_session_has_attr (session, 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_session_has_attr (session,
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_session_set_attr (session, VCL_SESS_ATTR_TCP_KEEPIDLE);
else
vcl_session_clear_attr (session, VCL_SESS_ATTR_TCP_KEEPIDLE);
VDBG (2, "VPPCOM_ATTR_SET_TCP_KEEPIDLE: %d, buflen %d, #VPP-TBD#",
vcl_session_has_attr (session,
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_session_has_attr (session,
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_session_set_attr (session, VCL_SESS_ATTR_TCP_KEEPINTVL);
else
vcl_session_clear_attr (session, VCL_SESS_ATTR_TCP_KEEPINTVL);
VDBG (2, "VPPCOM_ATTR_SET_TCP_KEEPINTVL: %d, buflen %d, #VPP-TBD#",
vcl_session_has_attr (session,
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_session_set_attr (session, VCL_SESS_ATTR_SHUT_RD);
if (*flags == SHUT_WR || *flags == SHUT_RDWR)
vcl_session_set_attr (session, VCL_SESS_ATTR_SHUT_WR);
break;
case VPPCOM_ATTR_GET_SHUT:
if (vcl_session_has_attr (session, VCL_SESS_ATTR_SHUT_RD))
tmp_flags = 1;
if (vcl_session_has_attr (session, 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;
case VPPCOM_ATTR_SET_CONNECTED:
session->flags |= VCL_SESSION_F_CONNECTED;
break;
case VPPCOM_ATTR_SET_CKPAIR:
if (!(buffer && buflen && (*buflen == sizeof (int))) ||
!vcl_session_has_crypto (session))
{
rv = VPPCOM_EINVAL;
break;
}
session->ckpair_index = *(uint32_t *) buffer;
break;
case VPPCOM_ATTR_SET_VRF:
if (!(buffer && buflen && (*buflen == sizeof (u32))))
{
rv = VPPCOM_EINVAL;
break;
}
session->vrf = *(u32 *) buffer;
break;
case VPPCOM_ATTR_GET_VRF:
if (!(buffer && buflen && (*buflen >= sizeof (u32))))
{
rv = VPPCOM_EINVAL;
break;
}
*(u32 *) buffer = session->vrf;
*buflen = sizeof (u32);
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 ();
vcl_session_t *session;
int rv = VPPCOM_OK;
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 && rv > 0)
{
session = vcl_session_get_w_handle (wrk, session_handle);
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));
ep->is_ip4 = session->transport.is_ip4;
ep->port = session->transport.rmt_port;
}
return rv;
}
int
vppcom_session_sendto (uint32_t session_handle, void *buffer,
uint32_t buflen, int flags, vppcom_endpt_t * ep)
{
vcl_worker_t *wrk = vcl_worker_get_current ();
vcl_session_t *s;
s = vcl_session_get_w_handle (wrk, session_handle);
if (!s)
return VPPCOM_EBADFD;
if (!buffer)
return VPPCOM_EINVAL;
if (ep)
{
if (!vcl_session_is_cl (s))
return VPPCOM_EINVAL;
/* Session not connected/bound in vpp. Create it by 'connecting' it */
if (PREDICT_FALSE (s->session_state == VCL_STATE_CLOSED))
{
u32 session_index = s->session_index;
f64 timeout = vcm->cfg.session_timeout;
int rv;
vcl_send_session_connect (wrk, s);
rv = vppcom_wait_for_session_state_change (session_index,
VCL_STATE_READY,
timeout);
if (rv < 0)
return rv;
s = vcl_session_get (wrk, session_index);
}
s->transport.is_ip4 = ep->is_ip4;
s->transport.rmt_port = ep->port;
vcl_ip_copy_from_ep (&s->transport.rmt_ip, ep);
}
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 (wrk, s, buffer, buflen, 1,
s->is_dgram ? 1 : 0));
}
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_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);
}
void
vppcom_worker_index_set (int index)
{
vcl_set_worker_index (index);
}
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;
}
const char *
vppcom_proto_str (vppcom_proto_t proto)
{
char const *proto_str;
switch (proto)
{
case VPPCOM_PROTO_TCP:
proto_str = "TCP";
break;
case VPPCOM_PROTO_UDP:
proto_str = "UDP";
break;
case VPPCOM_PROTO_TLS:
proto_str = "TLS";
break;
case VPPCOM_PROTO_QUIC:
proto_str = "QUIC";
break;
default:
proto_str = "UNKNOWN";
break;
}
return proto_str;
}
const char *
vppcom_retval_str (int retval)
{
char const *st;
switch (retval)
{
case VPPCOM_OK:
st = "VPPCOM_OK";
break;
case VPPCOM_EAGAIN:
st = "VPPCOM_EAGAIN";
break;
case VPPCOM_EFAULT:
st = "VPPCOM_EFAULT";
break;
case VPPCOM_ENOMEM:
st = "VPPCOM_ENOMEM";
break;
case VPPCOM_EINVAL:
st = "VPPCOM_EINVAL";
break;
case VPPCOM_EBADFD:
st = "VPPCOM_EBADFD";
break;
case VPPCOM_EAFNOSUPPORT:
st = "VPPCOM_EAFNOSUPPORT";
break;
case VPPCOM_ECONNABORTED:
st = "VPPCOM_ECONNABORTED";
break;
case VPPCOM_ECONNRESET:
st = "VPPCOM_ECONNRESET";
break;
case VPPCOM_ENOTCONN:
st = "VPPCOM_ENOTCONN";
break;
case VPPCOM_ECONNREFUSED:
st = "VPPCOM_ECONNREFUSED";
break;
case VPPCOM_ETIMEDOUT:
st = "VPPCOM_ETIMEDOUT";
break;
default:
st = "UNKNOWN_STATE";
break;
}
return st;
}
int
vppcom_add_cert_key_pair (vppcom_cert_key_pair_t *ckpair)
{
if (vcm->cfg.vpp_app_socket_api)
{
clib_warning ("not supported");
return VPPCOM_EINVAL;
}
return vcl_bapi_add_cert_key_pair (ckpair);
}
int
vppcom_del_cert_key_pair (uint32_t ckpair_index)
{
if (vcm->cfg.vpp_app_socket_api)
{
clib_warning ("not supported");
return VPPCOM_EINVAL;
}
return vcl_bapi_del_cert_key_pair (ckpair_index);
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/