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gerrit.nordix.org / fdio / vpp / 2a3fb1a28b170ac1d37815983611e83d148811d4 / . / src / vcl / vppcom.c
blob: 0d077caa7971f6b0b7f04fef4413136c172a0223 [file] [log] [blame]
/*
* Copyright (c) 2017 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 <svm/svm_fifo_segment.h>
#include <vcl/vppcom.h>
#include <vcl/vcl_event.h>
#include <vcl/vcl_debug.h>
#include <vcl/vcl_private.h>
static const char *
vppcom_app_state_str (app_state_t state)
{
char *st;
switch (state)
{
case STATE_APP_START:
st = "STATE_APP_START";
break;
case STATE_APP_CONN_VPP:
st = "STATE_APP_CONN_VPP";
break;
case STATE_APP_ENABLED:
st = "STATE_APP_ENABLED";
break;
case STATE_APP_ATTACHED:
st = "STATE_APP_ATTACHED";
break;
default:
st = "UNKNOWN_APP_STATE";
break;
}
return st;
}
const char *
vppcom_session_state_str (session_state_t state)
{
char *st;
switch (state)
{
case STATE_START:
st = "STATE_START";
break;
case STATE_CONNECT:
st = "STATE_CONNECT";
break;
case STATE_LISTEN:
st = "STATE_LISTEN";
break;
case STATE_ACCEPT:
st = "STATE_ACCEPT";
break;
case STATE_CLOSE_ON_EMPTY:
st = "STATE_CLOSE_ON_EMPTY";
break;
case STATE_DISCONNECT:
st = "STATE_DISCONNECT";
break;
case STATE_FAILED:
st = "STATE_FAILED";
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 inline void
vppcom_session_table_del_listener (u64 listener_handle)
{
listener_handle |= 1ULL << 63;
hash_unset (vcm->session_index_by_vpp_handles, listener_handle);
}
static inline int
vppcom_wait_for_app_state_change (app_state_t app_state)
{
f64 timeout = clib_time_now (&vcm->clib_time) + vcm->cfg.app_timeout;
while (clib_time_now (&vcm->clib_time) < timeout)
{
if (vcm->app_state == app_state)
return VPPCOM_OK;
}
VDBG (0, "VCL<%d>: timeout waiting for state %s (%d)", getpid (),
vppcom_app_state_str (app_state), app_state);
vcl_evt (VCL_EVT_SESSION_TIMEOUT, vcm, app_state);
return VPPCOM_ETIMEDOUT;
}
static inline int
vppcom_wait_for_session_state_change (u32 session_index,
session_state_t state,
f64 wait_for_time)
{
f64 timeout = clib_time_now (&vcm->clib_time) + wait_for_time;
vcl_session_t *volatile session;
int rv;
do
{
VCL_SESSION_LOCK ();
rv = vppcom_session_at_index (session_index, &session);
if (PREDICT_FALSE (rv))
{
VCL_SESSION_UNLOCK ();
return rv;
}
if (session->session_state & state)
{
VCL_SESSION_UNLOCK ();
return VPPCOM_OK;
}
if (session->session_state & STATE_FAILED)
{
VCL_SESSION_UNLOCK ();
return VPPCOM_ECONNREFUSED;
}
VCL_SESSION_UNLOCK ();
}
while (clib_time_now (&vcm->clib_time) < timeout);
VDBG (0, "VCL<%d>: timeout waiting for state 0x%x (%s)", getpid (), state,
vppcom_session_state_str (state));
vcl_evt (VCL_EVT_SESSION_TIMEOUT, session, session_state);
return VPPCOM_ETIMEDOUT;
}
static int
vppcom_app_session_enable (void)
{
int rv;
if (vcm->app_state != STATE_APP_ENABLED)
{
vppcom_send_session_enable_disable (1 /* is_enabled == TRUE */ );
rv = vppcom_wait_for_app_state_change (STATE_APP_ENABLED);
if (PREDICT_FALSE (rv))
{
VDBG (0, "VCL<%d>: application session enable timed out! "
"returning %d (%s)", getpid (), rv, vppcom_retval_str (rv));
return rv;
}
}
return VPPCOM_OK;
}
static int
vppcom_app_attach (void)
{
int rv;
vppcom_app_send_attach ();
rv = vppcom_wait_for_app_state_change (STATE_APP_ATTACHED);
if (PREDICT_FALSE (rv))
{
VDBG (0, "VCL<%d>: application attach timed out! returning %d (%s)",
getpid (), rv, vppcom_retval_str (rv));
return rv;
}
return VPPCOM_OK;
}
static int
vppcom_session_unbind (u32 session_index)
{
vcl_session_t *session = 0;
int rv;
u64 vpp_handle;
VCL_SESSION_LOCK_AND_GET (session_index, &session);
vpp_handle = session->vpp_handle;
vppcom_session_table_del_listener (vpp_handle);
session->vpp_handle = ~0;
session->session_state = STATE_DISCONNECT;
VCL_SESSION_UNLOCK ();
VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending unbind msg! new state"
" 0x%x (%s)", getpid (), vpp_handle, session_index, STATE_DISCONNECT,
vppcom_session_state_str (STATE_DISCONNECT));
vcl_evt (VCL_EVT_UNBIND, session);
vppcom_send_unbind_sock (vpp_handle);
done:
return rv;
}
static int
vppcom_session_disconnect (u32 session_index)
{
int rv;
vcl_session_t *session;
u64 vpp_handle;
session_state_t state;
VCL_SESSION_LOCK_AND_GET (session_index, &session);
vpp_handle = session->vpp_handle;
state = session->session_state;
VCL_SESSION_UNLOCK ();
VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u state 0x%x (%s)", getpid (),
vpp_handle, session_index, state, vppcom_session_state_str (state));
if (PREDICT_FALSE (state & STATE_LISTEN))
{
clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
"Cannot disconnect a listen socket!",
getpid (), vpp_handle, session_index);
rv = VPPCOM_EBADFD;
goto done;
}
/* The peer has already initiated the close,
* so send the disconnect session reply.
*/
if (state & STATE_CLOSE_ON_EMPTY)
{
//XXX alagalah - Check and drain here?
vppcom_send_disconnect_session_reply (vpp_handle,
session_index, 0 /* rv */ );
VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending disconnect "
"REPLY...", getpid (), vpp_handle, session_index);
}
/* Otherwise, send a disconnect session msg...
*/
else
{
VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending disconnect...",
getpid (), vpp_handle, session_index);
vppcom_send_disconnect_session (vpp_handle, session_index);
}
done:
return rv;
}
/*
* VPPCOM Public API functions
*/
int
vppcom_app_create (char *app_name)
{
vppcom_cfg_t *vcl_cfg = &vcm->cfg;
u8 *heap;
mheap_t *h;
int rv;
if (!vcm->init)
{
vcm->init = 1;
clib_spinlock_init (&vcm->session_fifo_lockp);
clib_fifo_validate (vcm->client_session_index_fifo,
vcm->cfg.listen_queue_size);
clib_spinlock_init (&vcm->sessions_lockp);
vppcom_cfg (&vcm->cfg);
vcm->main_cpu = os_get_thread_index ();
heap = clib_mem_get_per_cpu_heap ();
h = mheap_header (heap);
/* make the main heap thread-safe */
h->flags |= MHEAP_FLAG_THREAD_SAFE;
vcm->session_index_by_vpp_handles = hash_create (0, sizeof (uword));
clib_time_init (&vcm->clib_time);
vppcom_init_error_string_table ();
svm_fifo_segment_main_init (vcl_cfg->segment_baseva,
20 /* timeout in secs */ );
}
if (vcm->my_client_index == ~0)
{
/* API hookup and connect to VPP */
vppcom_api_hookup ();
vcl_elog_init (vcm);
vcm->app_state = STATE_APP_START;
rv = vppcom_connect_to_vpp (app_name);
if (rv)
{
clib_warning ("VCL<%d>: ERROR: couldn't connect to VPP!",
getpid ());
return rv;
}
/* State event handling thread */
rv = vce_start_event_thread (&(vcm->event_thread), 20);
VDBG (0, "VCL<%d>: sending session enable", getpid ());
rv = vppcom_app_session_enable ();
if (rv)
{
clib_warning ("VCL<%d>: ERROR: vppcom_app_session_enable() "
"failed!", getpid ());
return rv;
}
VDBG (0, "VCL<%d>: sending app attach", getpid ());
rv = vppcom_app_attach ();
if (rv)
{
clib_warning ("VCL<%d>: ERROR: vppcom_app_attach() failed!",
getpid ());
return rv;
}
VDBG (0, "VCL<%d>: app_name '%s', my_client_index %d (0x%x)",
getpid (), app_name, vcm->my_client_index, vcm->my_client_index);
}
return VPPCOM_OK;
}
void
vppcom_app_destroy (void)
{
int rv;
f64 orig_app_timeout;
if (vcm->my_client_index == ~0)
return;
VDBG (0, "VCL<%d>: detaching from VPP, my_client_index %d (0x%x)",
getpid (), vcm->my_client_index, vcm->my_client_index);
vcl_evt (VCL_EVT_DETACH, vcm);
vppcom_app_send_detach ();
orig_app_timeout = vcm->cfg.app_timeout;
vcm->cfg.app_timeout = 2.0;
rv = vppcom_wait_for_app_state_change (STATE_APP_ENABLED);
vcm->cfg.app_timeout = orig_app_timeout;
if (PREDICT_FALSE (rv))
VDBG (0, "VCL<%d>: application detach timed out! returning %d (%s)",
getpid (), rv, vppcom_retval_str (rv));
vcl_elog_stop (vcm);
vl_client_disconnect_from_vlib ();
vcm->my_client_index = ~0;
vcm->app_state = STATE_APP_START;
}
int
vppcom_session_create (u8 proto, u8 is_nonblocking)
{
vcl_session_t *session;
u32 session_index;
VCL_SESSION_LOCK ();
pool_get (vcm->sessions, session);
memset (session, 0, sizeof (*session));
session_index = session - vcm->sessions;
session->session_type = proto;
session->session_state = STATE_START;
session->vpp_handle = ~0;
if (is_nonblocking)
VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
else
VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_NONBLOCK);
vcl_evt (VCL_EVT_CREATE, session, session_type, session->session_state,
is_nonblocking, session_index);
VCL_SESSION_UNLOCK ();
VDBG (0, "VCL<%d>: sid %u", getpid (), session_index);
return (int) session_index;
}
int
vppcom_session_close (uint32_t session_index)
{
vcl_session_t *session = 0;
int rv;
u8 is_vep;
u8 is_vep_session;
u32 next_sid;
u32 vep_idx;
u64 vpp_handle;
uword *p;
session_state_t state;
VCL_SESSION_LOCK_AND_GET (session_index, &session);
is_vep = session->is_vep;
is_vep_session = session->is_vep_session;
next_sid = session->vep.next_sid;
vep_idx = session->vep.vep_idx;
state = session->session_state;
vpp_handle = session->vpp_handle;
VCL_SESSION_UNLOCK ();
if (VPPCOM_DEBUG > 0)
{
if (is_vep)
clib_warning ("VCL<%d>: vep_idx %u / sid %u: "
"closing epoll session...",
getpid (), session_index, session_index);
else
clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %d: "
"closing session...",
getpid (), vpp_handle, session_index);
}
if (is_vep)
{
while (next_sid != ~0)
{
rv = vppcom_epoll_ctl (session_index, EPOLL_CTL_DEL, next_sid, 0);
if (PREDICT_FALSE (rv < 0))
VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL "
"vep_idx %u failed! rv %d (%s)",
getpid (), vpp_handle, next_sid, vep_idx,
rv, vppcom_retval_str (rv));
VCL_SESSION_LOCK_AND_GET (session_index, &session);
next_sid = session->vep.next_sid;
VCL_SESSION_UNLOCK ();
}
}
else
{
if (is_vep_session)
{
rv = vppcom_epoll_ctl (vep_idx, EPOLL_CTL_DEL, session_index, 0);
if (rv < 0)
VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL "
"vep_idx %u failed! rv %d (%s)",
getpid (), vpp_handle, session_index,
vep_idx, rv, vppcom_retval_str (rv));
}
if (state & STATE_LISTEN)
{
rv = vppcom_session_unbind (session_index);
if (PREDICT_FALSE (rv < 0))
VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: listener unbind "
"failed! rv %d (%s)",
getpid (), vpp_handle, session_index,
rv, vppcom_retval_str (rv));
}
else if (state & (CLIENT_STATE_OPEN | SERVER_STATE_OPEN))
{
rv = vppcom_session_disconnect (session_index);
if (PREDICT_FALSE (rv < 0))
clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
"session disconnect failed! rv %d (%s)",
getpid (), vpp_handle, session_index,
rv, vppcom_retval_str (rv));
}
}
VCL_SESSION_LOCK_AND_GET (session_index, &session);
vpp_handle = session->vpp_handle;
if (vpp_handle != ~0)
{
p = hash_get (vcm->session_index_by_vpp_handles, vpp_handle);
if (p)
hash_unset (vcm->session_index_by_vpp_handles, vpp_handle);
}
pool_put_index (vcm->sessions, session_index);
VCL_SESSION_UNLOCK ();
if (VPPCOM_DEBUG > 0)
{
if (is_vep)
clib_warning ("VCL<%d>: vep_idx %u / sid %u: epoll session removed.",
getpid (), session_index, session_index);
else
clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: session removed.",
getpid (), vpp_handle, session_index);
}
done:
vcl_evt (VCL_EVT_CLOSE, session, rv);
return rv;
}
int
vppcom_session_bind (uint32_t session_index, vppcom_endpt_t * ep)
{
vcl_session_t *session = 0;
int rv;
if (!ep || !ep->ip)
return VPPCOM_EINVAL;
VCL_SESSION_LOCK_AND_GET (session_index, &session);
if (session->is_vep)
{
VCL_SESSION_UNLOCK ();
clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
"bind to an epoll session!", getpid (), session_index);
rv = VPPCOM_EBADFD;
goto done;
}
session->transport.is_ip4 = ep->is_ip4;
session->transport.lcl_ip = to_ip46 (ep->is_ip4 ? IP46_TYPE_IP4 :
IP46_TYPE_IP6, ep->ip);
session->transport.lcl_port = ep->port;
VDBG (0, "VCL<%d>: sid %u: binding to local %s address %U port %u, "
"proto %s", getpid (), session_index,
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),
session->session_type ? "UDP" : "TCP");
vcl_evt (VCL_EVT_BIND, session);
VCL_SESSION_UNLOCK ();
done:
return rv;
}
int
vppcom_session_listen (uint32_t listen_session_index, uint32_t q_len)
{
vcl_session_t *listen_session = 0;
u64 listen_vpp_handle;
int rv, retval;
if (q_len == 0 || q_len == ~0)
q_len = vcm->cfg.listen_queue_size;
VCL_SESSION_LOCK_AND_GET (listen_session_index, &listen_session);
if (listen_session->is_vep)
{
VCL_SESSION_UNLOCK ();
clib_warning ("VCL<%d>: ERROR: sid %u: cannot listen on an "
"epoll session!", getpid (), listen_session_index);
rv = VPPCOM_EBADFD;
goto done;
}
listen_vpp_handle = listen_session->vpp_handle;
if (listen_session->session_state & STATE_LISTEN)
{
VCL_SESSION_UNLOCK ();
VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: already in listen state!",
getpid (), listen_vpp_handle, listen_session_index);
rv = VPPCOM_OK;
goto done;
}
VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: sending VPP bind+listen "
"request...", getpid (), listen_vpp_handle, listen_session_index);
vppcom_send_bind_sock (listen_session, listen_session_index);
VCL_SESSION_UNLOCK ();
retval =
vppcom_wait_for_session_state_change (listen_session_index, STATE_LISTEN,
vcm->cfg.session_timeout);
VCL_SESSION_LOCK_AND_GET (listen_session_index, &listen_session);
if (PREDICT_FALSE (retval))
{
VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: bind+listen failed! "
"returning %d (%s)", getpid (), listen_session->vpp_handle,
listen_session_index, retval, vppcom_retval_str (retval));
VCL_SESSION_UNLOCK ();
rv = retval;
goto done;
}
VCL_ACCEPT_FIFO_LOCK ();
clib_fifo_validate (vcm->client_session_index_fifo, q_len);
VCL_ACCEPT_FIFO_UNLOCK ();
VCL_SESSION_UNLOCK ();
done:
return rv;
}
int
validate_args_session_accept_ (vcl_session_t * listen_session)
{
u32 listen_session_index = listen_session - vcm->sessions;
/* Input validation - expects spinlock on sessions_lockp */
if (listen_session->is_vep)
{
clib_warning ("VCL<%d>: ERROR: sid %u: cannot accept on an "
"epoll session!", getpid (), listen_session_index);
return VPPCOM_EBADFD;
}
if (listen_session->session_state != STATE_LISTEN)
{
clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
"not in listen state! state 0x%x (%s)", getpid (),
listen_session->vpp_handle, listen_session_index,
listen_session->session_state,
vppcom_session_state_str (listen_session->session_state));
return VPPCOM_EBADFD;
}
return VPPCOM_OK;
}
int
vppcom_session_accept (uint32_t listen_session_index, vppcom_endpt_t * ep,
uint32_t flags)
{
vcl_session_t *listen_session = 0;
vcl_session_t *client_session = 0;
u32 client_session_index = ~0;
int rv;
u64 listen_vpp_handle;
vce_event_handler_reg_t *reg;
vce_event_t *ev;
vce_event_connect_request_t *result;
struct timespec ts;
struct timeval tv;
int millisecond_timeout = 1;
int hours_timeout = 20 * 60 * 60;
VCL_SESSION_LOCK_AND_GET (listen_session_index, &listen_session);
listen_vpp_handle = listen_session->vpp_handle; // For debugging
rv = validate_args_session_accept_ (listen_session);
if (rv)
{
VCL_SESSION_UNLOCK ();
goto done;
}
/* Using an aggressive timer of 1ms and a generous timer of
* 20 hours, we can implement a blocking and non-blocking listener
* as both event and time driven */
gettimeofday (&tv, NULL);
ts.tv_nsec = (tv.tv_usec * 1000) + (1000 * millisecond_timeout);
ts.tv_sec = tv.tv_sec;
/* Predict that the Listener is blocking more often than not */
if (PREDICT_TRUE (!VCL_SESS_ATTR_TEST (listen_session->attr,
VCL_SESS_ATTR_NONBLOCK)))
ts.tv_sec += hours_timeout;
VCL_SESSION_UNLOCK ();
/* Register handler for connect_request event on listen_session_index */
vce_event_key_t evk;
evk.session_index = listen_session_index;
evk.eid = VCL_EVENT_CONNECT_REQ_ACCEPTED;
reg = vce_register_handler (&vcm->event_thread, &evk,
vce_connect_request_handler_fn, 0);
VCL_EVENTS_LOCK ();
ev = vce_get_event_from_index (&vcm->event_thread, reg->ev_idx);
pthread_mutex_lock (&reg->handler_lock);
while (!ev)
{
VCL_EVENTS_UNLOCK ();
rv = pthread_cond_timedwait (&reg->handler_cond,
&reg->handler_lock, &ts);
if (rv == ETIMEDOUT)
{
rv = VPPCOM_EAGAIN;
goto cleanup;
}
VCL_EVENTS_LOCK ();
ev = vce_get_event_from_index (&vcm->event_thread, reg->ev_idx);
}
result = vce_get_event_data (ev, sizeof (*result));
client_session_index = result->accepted_session_index;
VCL_EVENTS_UNLOCK ();
/* Remove from the FIFO used to service epoll */
VCL_ACCEPT_FIFO_LOCK ();
if (clib_fifo_elts (vcm->client_session_index_fifo))
{
u32 tmp_client_session_index;
clib_fifo_sub1 (vcm->client_session_index_fifo,
tmp_client_session_index);
/* It wasn't ours... put it back ... */
if (tmp_client_session_index != client_session_index)
clib_fifo_add1 (vcm->client_session_index_fifo,
tmp_client_session_index);
}
VCL_ACCEPT_FIFO_UNLOCK ();
VCL_SESSION_LOCK ();
rv = vppcom_session_at_index (client_session_index, &client_session);
if (PREDICT_FALSE (rv))
{
rv = VPPCOM_ECONNABORTED;
clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: client sid %u "
"lookup failed! returning %d (%s)", getpid (),
listen_vpp_handle, listen_session_index,
client_session_index, rv, vppcom_retval_str (rv));
goto cleanup;
}
if (flags & O_NONBLOCK)
VCL_SESS_ATTR_SET (client_session->attr, VCL_SESS_ATTR_NONBLOCK);
else
VCL_SESS_ATTR_CLR (client_session->attr, VCL_SESS_ATTR_NONBLOCK);
VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: Got a client request! "
"vpp handle 0x%llx, sid %u, flags %d, is_nonblocking %u",
getpid (), listen_vpp_handle, listen_session_index,
client_session->vpp_handle, client_session_index,
flags, VCL_SESS_ATTR_TEST (client_session->attr,
VCL_SESS_ATTR_NONBLOCK));
if (ep)
{
ep->is_ip4 = client_session->transport.is_ip4;
ep->port = client_session->transport.rmt_port;
if (client_session->transport.is_ip4)
clib_memcpy (ep->ip, &client_session->transport.rmt_ip.ip4,
sizeof (ip4_address_t));
else
clib_memcpy (ep->ip, &client_session->transport.rmt_ip.ip6,
sizeof (ip6_address_t));
}
vppcom_send_accept_session_reply (client_session->vpp_handle,
client_session->client_context,
0 /* retval OK */ );
VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: accepted vpp handle 0x%llx,"
" sid %u connection from peer %s address %U port %u to local %s address"
" %U port %u",
getpid (), listen_vpp_handle,
listen_session_index, client_session->vpp_handle,
client_session_index,
client_session->transport.is_ip4 ? "IPv4" : "IPv6",
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),
client_session->transport.is_ip4 ? "IPv4" : "IPv6",
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);
VCL_SESSION_UNLOCK ();
rv = (int) client_session_index;
vce_clear_event (&vcm->event_thread, reg->ev_idx);
if (vcm->session_io_thread.io_sessions_lockp)
{
/* Throw this new accepted session index into the rx poll thread pool */
VCL_IO_SESSIONS_LOCK ();
u32 *active_session_index;
pool_get (vcm->session_io_thread.active_session_indexes,
active_session_index);
*active_session_index = client_session_index;
VCL_IO_SESSIONS_UNLOCK ();
}
cleanup:
vce_unregister_handler (&vcm->event_thread, reg);
pthread_mutex_unlock (&reg->handler_lock);
done:
return rv;
}
int
vppcom_session_connect (uint32_t session_index, vppcom_endpt_t * server_ep)
{
vcl_session_t *session = 0;
u64 vpp_handle = 0;
int rv, retval = VPPCOM_OK;
VCL_SESSION_LOCK_AND_GET (session_index, &session);
if (PREDICT_FALSE (session->is_vep))
{
VCL_SESSION_UNLOCK ();
clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
"connect on an epoll session!", getpid (), session_index);
rv = VPPCOM_EBADFD;
goto done;
}
if (PREDICT_FALSE (session->session_state & CLIENT_STATE_OPEN))
{
VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: session already "
"connected to %s %U port %d proto %s, state 0x%x (%s)",
getpid (), session->vpp_handle, session_index,
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),
session->session_type ? "UDP" : "TCP", session->session_state,
vppcom_session_state_str (session->session_state));
VCL_SESSION_UNLOCK ();
goto done;
}
session->transport.is_ip4 = server_ep->is_ip4;
if (session->transport.is_ip4)
clib_memcpy (&session->transport.rmt_ip.ip4, server_ep->ip,
sizeof (ip4_address_t));
else
clib_memcpy (&session->transport.rmt_ip.ip6, server_ep->ip,
sizeof (ip6_address_t));
session->transport.rmt_port = server_ep->port;
VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connecting to server %s %U "
"port %d proto %s",
getpid (), session->vpp_handle, session_index,
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),
session->session_type ? "UDP" : "TCP");
vppcom_send_connect_sock (session, session_index);
VCL_SESSION_UNLOCK ();
retval =
vppcom_wait_for_session_state_change (session_index, STATE_CONNECT,
vcm->cfg.session_timeout);
VCL_SESSION_LOCK_AND_GET (session_index, &session);
vpp_handle = session->vpp_handle;
VCL_SESSION_UNLOCK ();
done:
if (PREDICT_FALSE (retval))
{
rv = retval;
if (VPPCOM_DEBUG > 0)
{
if (session)
clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: connect "
"failed! returning %d (%s)", getpid (), vpp_handle,
session_index, rv, vppcom_retval_str (rv));
else
clib_warning ("VCL<%d>: no session for sid %u: connect failed! "
"returning %d (%s)", getpid (),
session_index, rv, vppcom_retval_str (rv));
}
}
else
VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connected!",
getpid (), vpp_handle, session_index);
return rv;
}
static inline int
vppcom_session_read_internal (uint32_t session_index, void *buf, int n,
u8 peek)
{
vcl_session_t *session = 0;
svm_fifo_t *rx_fifo;
int n_read = 0;
int rv;
int is_nonblocking;
u64 vpp_handle;
u32 poll_et;
session_state_t state;
ASSERT (buf);
VCL_SESSION_LOCK_AND_GET (session_index, &session);
is_nonblocking = VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK);
rx_fifo = session->rx_fifo;
state = session->session_state;
vpp_handle = session->vpp_handle;
if (PREDICT_FALSE (session->is_vep))
{
VCL_SESSION_UNLOCK ();
clib_warning ("VCL<%d>: ERROR: sid %u: cannot "
"read from an epoll session!", getpid (), session_index);
rv = VPPCOM_EBADFD;
goto done;
}
if (PREDICT_FALSE (!(state & (SERVER_STATE_OPEN | CLIENT_STATE_OPEN))))
{
VCL_SESSION_UNLOCK ();
rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: %s session is not open! "
"state 0x%x (%s), returning %d (%s)",
getpid (), vpp_handle, session_index, state,
vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
goto done;
}
VCL_SESSION_UNLOCK ();
do
{
if (peek)
n_read = svm_fifo_peek (rx_fifo, 0, n, buf);
else
n_read = svm_fifo_dequeue_nowait (rx_fifo, n, buf);
}
while (!is_nonblocking && (n_read <= 0));
if (n_read <= 0)
{
VCL_SESSION_LOCK_AND_GET (session_index, &session);
poll_et = (((EPOLLET | EPOLLIN) & session->vep.ev.events) ==
(EPOLLET | EPOLLIN));
if (poll_et)
session->vep.et_mask |= EPOLLIN;
if (state & STATE_CLOSE_ON_EMPTY)
{
rv = VPPCOM_ECONNRESET;
VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: Empty fifo with "
"session state 0x%x (%s)! Setting state to 0x%x (%s), "
"returning %d (%s)",
getpid (), session->vpp_handle, session_index,
state, vppcom_session_state_str (state),
STATE_DISCONNECT,
vppcom_session_state_str (STATE_DISCONNECT), rv,
vppcom_retval_str (rv));
session->session_state = STATE_DISCONNECT;
}
else
rv = VPPCOM_EAGAIN;
VCL_SESSION_UNLOCK ();
}
else
rv = n_read;
if (VPPCOM_DEBUG > 2)
{
if (rv > 0)
clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: read %d bytes "
"from (%p)", getpid (), vpp_handle,
session_index, n_read, rx_fifo);
else
clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: nothing read! "
"returning %d (%s)", getpid (), vpp_handle,
session_index, rv, vppcom_retval_str (rv));
}
done:
return rv;
}
int
vppcom_session_read (uint32_t session_index, void *buf, size_t n)
{
return (vppcom_session_read_internal (session_index, buf, n, 0));
}
static int
vppcom_session_peek (uint32_t session_index, void *buf, int n)
{
return (vppcom_session_read_internal (session_index, buf, n, 1));
}
static inline int
vppcom_session_read_ready (vcl_session_t * session, u32 session_index)
{
int ready = 0;
u32 poll_et;
int rv;
session_state_t state = session->session_state;
u64 vpp_handle = session->vpp_handle;
/* Assumes caller has acquired spinlock: vcm->sessions_lockp */
if (PREDICT_FALSE (session->is_vep))
{
clib_warning ("VCL<%d>: ERROR: sid %u: cannot read from an "
"epoll session!", getpid (), session_index);
rv = VPPCOM_EBADFD;
goto done;
}
if (session->session_state & STATE_LISTEN)
{
VCL_ACCEPT_FIFO_LOCK ();
ready = clib_fifo_elts (vcm->client_session_index_fifo);
VCL_ACCEPT_FIFO_UNLOCK ();
}
else
{
if (!(state & (SERVER_STATE_OPEN | CLIENT_STATE_OPEN | STATE_LISTEN)))
{
rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET :
VPPCOM_ENOTCONN);
VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open!"
" state 0x%x (%s), returning %d (%s)",
getpid (), vpp_handle, session_index,
state, vppcom_session_state_str (state),
rv, vppcom_retval_str (rv));
goto done;
}
ready = svm_fifo_max_dequeue (session->rx_fifo);
}
if (ready == 0)
{
poll_et =
((EPOLLET | EPOLLIN) & session->vep.ev.events) == (EPOLLET | EPOLLIN);
if (poll_et)
session->vep.et_mask |= EPOLLIN;
if (state & STATE_CLOSE_ON_EMPTY)
{
rv = VPPCOM_ECONNRESET;
VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: Empty fifo with "
"session state 0x%x (%s)! Setting state to 0x%x (%s), "
"returning %d (%s)",
getpid (), session_index, vpp_handle,
state, vppcom_session_state_str (state),
STATE_DISCONNECT,
vppcom_session_state_str (STATE_DISCONNECT), rv,
vppcom_retval_str (rv));
session->session_state = STATE_DISCONNECT;
goto done;
}
}
rv = ready;
if (!svm_msg_q_is_empty (vcm->app_event_queue) &&
!pthread_mutex_trylock (&vcm->app_event_queue->q->mutex))
{
u32 i, n_to_dequeue = vcm->app_event_queue->q->cursize;
svm_msg_q_msg_t msg;
for (i = 0; i < n_to_dequeue; i++)
{
svm_queue_sub_raw (vcm->app_event_queue->q, (u8 *) & msg);
svm_msg_q_free_msg (vcm->app_event_queue, &msg);
}
pthread_mutex_unlock (&vcm->app_event_queue->q->mutex);
}
done:
return rv;
}
int
vppcom_session_write (uint32_t session_index, void *buf, size_t n)
{
vcl_session_t *session = 0;
svm_fifo_t *tx_fifo = 0;
svm_msg_q_t *mq;
session_state_t state;
int rv, n_write, is_nonblocking;
u32 poll_et;
u64 vpp_handle;
ASSERT (buf);
VCL_SESSION_LOCK_AND_GET (session_index, &session);
tx_fifo = session->tx_fifo;
is_nonblocking = VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK);
vpp_handle = session->vpp_handle;
state = session->session_state;
if (PREDICT_FALSE (session->is_vep))
{
VCL_SESSION_UNLOCK ();
clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
"cannot write to an epoll session!",
getpid (), vpp_handle, session_index);
rv = VPPCOM_EBADFD;
goto done;
}
if (!(session->session_state & (SERVER_STATE_OPEN | CLIENT_STATE_OPEN)))
{
rv =
((session->session_state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET :
VPPCOM_ENOTCONN);
VCL_SESSION_UNLOCK ();
VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open! "
"state 0x%x (%s)",
getpid (), vpp_handle, session_index,
state, vppcom_session_state_str (state));
goto done;
}
VCL_SESSION_UNLOCK ();
do
{
n_write = svm_fifo_enqueue_nowait (tx_fifo, n, (void *) buf);
}
while (!is_nonblocking && (n_write <= 0));
/* If event wasn't set, add one
*
* To reduce context switching, can check if an
* event is already there for this event_key, but for now
* this will suffice. */
if ((n_write > 0) && svm_fifo_set_event (tx_fifo))
{
/* Send TX event to vpp */
VCL_SESSION_LOCK_AND_GET (session_index, &session);
mq = session->vpp_evt_q;
ASSERT (mq);
app_send_io_evt_to_vpp (mq, tx_fifo, FIFO_EVENT_APP_TX, SVM_Q_WAIT);
VCL_SESSION_UNLOCK ();
VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: added FIFO_EVENT_APP_TX "
"to vpp_event_q %p, n_write %d", getpid (),
vpp_handle, session_index, mq, n_write);
}
if (n_write <= 0)
{
VCL_SESSION_LOCK_AND_GET (session_index, &session);
poll_et = (((EPOLLET | EPOLLOUT) & session->vep.ev.events) ==
(EPOLLET | EPOLLOUT));
if (poll_et)
session->vep.et_mask |= EPOLLOUT;
if (session->session_state & STATE_CLOSE_ON_EMPTY)
{
rv = VPPCOM_ECONNRESET;
VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: Empty fifo with "
"session state 0x%x (%s)! Setting state to 0x%x (%s), "
"returning %d (%s)",
getpid (), session->vpp_handle, session_index,
session->session_state,
vppcom_session_state_str (session->session_state),
STATE_DISCONNECT,
vppcom_session_state_str (STATE_DISCONNECT), rv,
vppcom_retval_str (rv));
session->session_state = STATE_DISCONNECT;
}
else
rv = VPPCOM_EAGAIN;
VCL_SESSION_UNLOCK ();
}
else
rv = n_write;
if (VPPCOM_DEBUG > 2)
{
if (n_write <= 0)
clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: "
"FIFO-FULL (%p)", getpid (), vpp_handle,
session_index, tx_fifo);
else
clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: "
"wrote %d bytes tx-fifo: (%p)", getpid (),
vpp_handle, session_index, n_write, tx_fifo);
}
done:
return rv;
}
static inline int
vppcom_session_write_ready (vcl_session_t * session, u32 session_index)
{
int ready;
u32 poll_et;
int rv;
ASSERT (session);
/* Assumes caller has acquired spinlock: vcm->sessions_lockp */
if (PREDICT_FALSE (session->is_vep))
{
clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
"cannot write to an epoll session!",
getpid (), session->vpp_handle, session_index);
rv = VPPCOM_EBADFD;
goto done;
}
if (PREDICT_FALSE (session->session_state & STATE_LISTEN))
{
clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
"cannot write to a listen session!",
getpid (), session->vpp_handle, session_index);
rv = VPPCOM_EBADFD;
goto done;
}
if (!(session->session_state & (SERVER_STATE_OPEN | CLIENT_STATE_OPEN)))
{
session_state_t state = session->session_state;
rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: "
"session is not open! state 0x%x (%s), "
"returning %d (%s)", getpid (), session->vpp_handle,
session_index,
state, vppcom_session_state_str (state),
rv, vppcom_retval_str (rv));
goto done;
}
ready = svm_fifo_max_enqueue (session->tx_fifo);
VDBG (3, "VCL<%d>: vpp handle 0x%llx, sid %u: peek %s (%p), ready = %d",
getpid (), session->vpp_handle, session_index, session->tx_fifo,
ready);
if (ready == 0)
{
poll_et = (((EPOLLET | EPOLLOUT) & session->vep.ev.events) ==
(EPOLLET | EPOLLOUT));
if (poll_et)
session->vep.et_mask |= EPOLLOUT;
if (session->session_state & STATE_CLOSE_ON_EMPTY)
{
rv = VPPCOM_ECONNRESET;
VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: Empty fifo with "
"session state 0x%x (%s)! Setting state to 0x%x (%s), "
"returning %d (%s)", getpid (),
session->vpp_handle, session_index,
session->session_state,
vppcom_session_state_str (session->session_state),
STATE_DISCONNECT,
vppcom_session_state_str (STATE_DISCONNECT), rv,
vppcom_retval_str (rv));
session->session_state = STATE_DISCONNECT;
goto done;
}
}
rv = ready;
done:
return rv;
}
int
vppcom_select (unsigned long n_bits, unsigned long *read_map,
unsigned long *write_map, unsigned long *except_map,
double time_to_wait)
{
u32 session_index;
vcl_session_t *session = 0;
int rv, bits_set = 0;
f64 timeout = clib_time_now (&vcm->clib_time) + time_to_wait;
u32 minbits = clib_max (n_bits, BITS (uword));
ASSERT (sizeof (clib_bitmap_t) == sizeof (long int));
if (n_bits && read_map)
{
clib_bitmap_validate (vcm->rd_bitmap, minbits);
clib_memcpy (vcm->rd_bitmap, read_map,
vec_len (vcm->rd_bitmap) * sizeof (clib_bitmap_t));
memset (read_map, 0, vec_len (vcm->rd_bitmap) * sizeof (clib_bitmap_t));
}
if (n_bits && write_map)
{
clib_bitmap_validate (vcm->wr_bitmap, minbits);
clib_memcpy (vcm->wr_bitmap, write_map,
vec_len (vcm->wr_bitmap) * sizeof (clib_bitmap_t));
memset (write_map, 0,
vec_len (vcm->wr_bitmap) * sizeof (clib_bitmap_t));
}
if (n_bits && except_map)
{
clib_bitmap_validate (vcm->ex_bitmap, minbits);
clib_memcpy (vcm->ex_bitmap, except_map,
vec_len (vcm->ex_bitmap) * sizeof (clib_bitmap_t));
memset (except_map, 0,
vec_len (vcm->ex_bitmap) * sizeof (clib_bitmap_t));
}
do
{
/* *INDENT-OFF* */
if (n_bits)
{
if (read_map)
{
clib_bitmap_foreach (session_index, vcm->rd_bitmap,
({
VCL_SESSION_LOCK();
rv = vppcom_session_at_index (session_index, &session);
if (rv < 0)
{
VCL_SESSION_UNLOCK();
VDBG (1, "VCL<%d>: session %d specified in read_map is"
" closed.", getpid (),
session_index);
bits_set = VPPCOM_EBADFD;
goto select_done;
}
if (session->session_state & STATE_LISTEN)
{
vce_event_handler_reg_t *reg = 0;
vce_event_key_t evk;
/* Check if handler already registered for this
* event.
* If not, register handler for connect_request event
* on listen_session_index
*/
evk.session_index = session_index;
evk.eid = VCL_EVENT_CONNECT_REQ_ACCEPTED;
reg = vce_get_event_handler (&vcm->event_thread, &evk);
if (!reg)
reg = vce_register_handler (&vcm->event_thread, &evk,
vce_poll_wait_connect_request_handler_fn,
0 /* No callback args */);
rv = vppcom_session_read_ready (session, session_index);
if (rv > 0)
{
vce_unregister_handler (&vcm->event_thread, reg);
}
}
else
rv = vppcom_session_read_ready (session, session_index);
VCL_SESSION_UNLOCK();
if (except_map && vcm->ex_bitmap &&
clib_bitmap_get (vcm->ex_bitmap, session_index) &&
(rv < 0))
{
clib_bitmap_set_no_check (except_map, session_index, 1);
bits_set++;
}
else if (rv > 0)
{
clib_bitmap_set_no_check (read_map, session_index, 1);
bits_set++;
}
}));
}
if (write_map)
{
clib_bitmap_foreach (session_index, vcm->wr_bitmap,
({
VCL_SESSION_LOCK();
rv = vppcom_session_at_index (session_index, &session);
if (rv < 0)
{
VCL_SESSION_UNLOCK();
VDBG (0, "VCL<%d>: session %d specified in "
"write_map is closed.", getpid (),
session_index);
bits_set = VPPCOM_EBADFD;
goto select_done;
}
rv = vppcom_session_write_ready (session, session_index);
VCL_SESSION_UNLOCK();
if (write_map && (rv > 0))
{
clib_bitmap_set_no_check (write_map, session_index, 1);
bits_set++;
}
}));
}
if (except_map)
{
clib_bitmap_foreach (session_index, vcm->ex_bitmap,
({
VCL_SESSION_LOCK();
rv = vppcom_session_at_index (session_index, &session);
if (rv < 0)
{
VCL_SESSION_UNLOCK();
VDBG (1, "VCL<%d>: session %d specified in except_map "
"is closed.", getpid (),
session_index);
bits_set = VPPCOM_EBADFD;
goto select_done;
}
rv = vppcom_session_read_ready (session, session_index);
VCL_SESSION_UNLOCK();
if (rv < 0)
{
clib_bitmap_set_no_check (except_map, session_index, 1);
bits_set++;
}
}));
}
}
/* *INDENT-ON* */
}
while ((time_to_wait == -1) || (clib_time_now (&vcm->clib_time) < timeout));
select_done:
return (bits_set);
}
static inline void
vep_verify_epoll_chain (u32 vep_idx)
{
vcl_session_t *session;
vppcom_epoll_t *vep;
int rv;
u32 sid = vep_idx;
if (VPPCOM_DEBUG <= 1)
return;
/* Assumes caller has acquired spinlock: vcm->sessions_lockp */
rv = vppcom_session_at_index (vep_idx, &session);
if (PREDICT_FALSE (rv))
{
clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!",
getpid (), vep_idx);
goto done;
}
if (PREDICT_FALSE (!session->is_vep))
{
clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
getpid (), vep_idx);
goto done;
}
vep = &session->vep;
clib_warning ("VCL<%d>: vep_idx (%u): Dumping epoll chain\n"
"{\n"
" is_vep = %u\n"
" is_vep_session = %u\n"
" next_sid = 0x%x (%u)\n"
" wait_cont_idx = 0x%x (%u)\n"
"}\n", getpid (), vep_idx,
session->is_vep, session->is_vep_session,
vep->next_sid, vep->next_sid,
session->wait_cont_idx, session->wait_cont_idx);
for (sid = vep->next_sid; sid != ~0; sid = vep->next_sid)
{
rv = vppcom_session_at_index (sid, &session);
if (PREDICT_FALSE (rv))
{
clib_warning ("VCL<%d>: ERROR: Invalid sid (%u)!", getpid (), sid);
goto done;
}
if (PREDICT_FALSE (session->is_vep))
clib_warning ("VCL<%d>: ERROR: sid (%u) is a vep!",
getpid (), vep_idx);
else if (PREDICT_FALSE (!session->is_vep_session))
{
clib_warning ("VCL<%d>: ERROR: session (%u) "
"is not a vep session!", getpid (), sid);
goto done;
}
vep = &session->vep;
if (PREDICT_FALSE (vep->vep_idx != vep_idx))
clib_warning ("VCL<%d>: ERROR: session (%u) vep_idx (%u) != "
"vep_idx (%u)!", getpid (),
sid, session->vep.vep_idx, vep_idx);
if (session->is_vep_session)
{
clib_warning ("vep_idx[%u]: sid 0x%x (%u)\n"
"{\n"
" next_sid = 0x%x (%u)\n"
" prev_sid = 0x%x (%u)\n"
" vep_idx = 0x%x (%u)\n"
" ev.events = 0x%x\n"
" ev.data.u64 = 0x%llx\n"
" et_mask = 0x%x\n"
"}\n",
vep_idx, sid, sid,
vep->next_sid, vep->next_sid,
vep->prev_sid, vep->prev_sid,
vep->vep_idx, vep->vep_idx,
vep->ev.events, vep->ev.data.u64, vep->et_mask);
}
}
done:
clib_warning ("VCL<%d>: vep_idx (%u): Dump complete!\n",
getpid (), vep_idx);
}
int
vppcom_epoll_create (void)
{
vcl_session_t *vep_session;
u32 vep_idx;
VCL_SESSION_LOCK ();
pool_get (vcm->sessions, vep_session);
memset (vep_session, 0, sizeof (*vep_session));
vep_idx = vep_session - vcm->sessions;
vep_session->is_vep = 1;
vep_session->vep.vep_idx = ~0;
vep_session->vep.next_sid = ~0;
vep_session->vep.prev_sid = ~0;
vep_session->wait_cont_idx = ~0;
vep_session->vpp_handle = ~0;
vep_session->poll_reg = 0;
vcl_evt (VCL_EVT_EPOLL_CREATE, vep_session, vep_idx);
VCL_SESSION_UNLOCK ();
VDBG (0, "VCL<%d>: Created vep_idx %u / sid %u!",
getpid (), vep_idx, vep_idx);
return (vep_idx);
}
int
vppcom_epoll_ctl (uint32_t vep_idx, int op, uint32_t session_index,
struct epoll_event *event)
{
vcl_session_t *vep_session;
vcl_session_t *session;
int rv;
if (vep_idx == session_index)
{
clib_warning ("VCL<%d>: ERROR: vep_idx == session_index (%u)!",
getpid (), vep_idx);
return VPPCOM_EINVAL;
}
VCL_SESSION_LOCK ();
rv = vppcom_session_at_index (vep_idx, &vep_session);
if (PREDICT_FALSE (rv))
{
clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!", vep_idx);
goto done;
}
if (PREDICT_FALSE (!vep_session->is_vep))
{
clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
getpid (), vep_idx);
rv = VPPCOM_EINVAL;
goto done;
}
ASSERT (vep_session->vep.vep_idx == ~0);
ASSERT (vep_session->vep.prev_sid == ~0);
rv = vppcom_session_at_index (session_index, &session);
if (PREDICT_FALSE (rv))
{
VDBG (0, "VCL<%d>: ERROR: Invalid session_index (%u)!",
getpid (), session_index);
goto done;
}
if (PREDICT_FALSE (session->is_vep))
{
clib_warning ("ERROR: session_index (%u) is a vep!", vep_idx);
rv = VPPCOM_EINVAL;
goto done;
}
switch (op)
{
case EPOLL_CTL_ADD:
if (PREDICT_FALSE (!event))
{
clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: NULL pointer to "
"epoll_event structure!", getpid ());
rv = VPPCOM_EINVAL;
goto done;
}
if (vep_session->vep.next_sid != ~0)
{
vcl_session_t *next_session;
rv = vppcom_session_at_index (vep_session->vep.next_sid,
&next_session);
if (PREDICT_FALSE (rv))
{
clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: Invalid "
"vep.next_sid (%u) on vep_idx (%u)!",
getpid (), vep_session->vep.next_sid, vep_idx);
goto done;
}
ASSERT (next_session->vep.prev_sid == vep_idx);
next_session->vep.prev_sid = session_index;
}
session->vep.next_sid = vep_session->vep.next_sid;
session->vep.prev_sid = vep_idx;
session->vep.vep_idx = vep_idx;
session->vep.et_mask = VEP_DEFAULT_ET_MASK;
session->vep.ev = *event;
session->is_vep = 0;
session->is_vep_session = 1;
vep_session->vep.next_sid = session_index;
/* VCL Event Register handler */
if (session->session_state & STATE_LISTEN)
{
/* Register handler for connect_request event on listen_session_index */
vce_event_key_t evk;
evk.session_index = session_index;
evk.eid = VCL_EVENT_CONNECT_REQ_ACCEPTED;
vep_session->poll_reg =
vce_register_handler (&vcm->event_thread, &evk,
vce_poll_wait_connect_request_handler_fn,
0 /* No callback args */ );
}
VDBG (1, "VCL<%d>: EPOLL_CTL_ADD: vep_idx %u, "
"sid %u, events 0x%x, data 0x%llx!",
getpid (), vep_idx, session_index,
event->events, event->data.u64);
vcl_evt (VCL_EVT_EPOLL_CTLADD, session, event->events, event->data.u64);
break;
case EPOLL_CTL_MOD:
if (PREDICT_FALSE (!event))
{
clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_MOD: NULL pointer to "
"epoll_event structure!", getpid ());
rv = VPPCOM_EINVAL;
goto done;
}
else if (PREDICT_FALSE (!session->is_vep_session))
{
clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: "
"not a vep session!", getpid (), session_index);
rv = VPPCOM_EINVAL;
goto done;
}
else if (PREDICT_FALSE (session->vep.vep_idx != vep_idx))
{
clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: "
"vep_idx (%u) != vep_idx (%u)!",
getpid (), session_index,
session->vep.vep_idx, vep_idx);
rv = VPPCOM_EINVAL;
goto done;
}
session->vep.et_mask = VEP_DEFAULT_ET_MASK;
session->vep.ev = *event;
VDBG (1, "VCL<%d>: EPOLL_CTL_MOD: vep_idx %u, sid %u, events 0x%x,"
" data 0x%llx!", getpid (), vep_idx, session_index, event->events,
event->data.u64);
break;
case EPOLL_CTL_DEL:
if (PREDICT_FALSE (!session->is_vep_session))
{
clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: "
"not a vep session!", getpid (), session_index);
rv = VPPCOM_EINVAL;
goto done;
}
else if (PREDICT_FALSE (session->vep.vep_idx != vep_idx))
{
clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: "
"vep_idx (%u) != vep_idx (%u)!",
getpid (), session_index,
session->vep.vep_idx, vep_idx);
rv = VPPCOM_EINVAL;
goto done;
}
/* VCL Event Un-register handler */
if ((session->session_state & STATE_LISTEN) && vep_session->poll_reg)
{
(void) vce_unregister_handler (&vcm->event_thread,
vep_session->poll_reg);
}
vep_session->wait_cont_idx =
(vep_session->wait_cont_idx == session_index) ?
session->vep.next_sid : vep_session->wait_cont_idx;
if (session->vep.prev_sid == vep_idx)
vep_session->vep.next_sid = session->vep.next_sid;
else
{
vcl_session_t *prev_session;
rv = vppcom_session_at_index (session->vep.prev_sid, &prev_session);
if (PREDICT_FALSE (rv))
{
clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid "
"vep.prev_sid (%u) on sid (%u)!",
getpid (), session->vep.prev_sid, session_index);
goto done;
}
ASSERT (prev_session->vep.next_sid == session_index);
prev_session->vep.next_sid = session->vep.next_sid;
}
if (session->vep.next_sid != ~0)
{
vcl_session_t *next_session;
rv = vppcom_session_at_index (session->vep.next_sid, &next_session);
if (PREDICT_FALSE (rv))
{
clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid "
"vep.next_sid (%u) on sid (%u)!",
getpid (), session->vep.next_sid, session_index);
goto done;
}
ASSERT (next_session->vep.prev_sid == session_index);
next_session->vep.prev_sid = session->vep.prev_sid;
}
memset (&session->vep, 0, sizeof (session->vep));
session->vep.next_sid = ~0;
session->vep.prev_sid = ~0;
session->vep.vep_idx = ~0;
session->is_vep_session = 0;
VDBG (1, "VCL<%d>: EPOLL_CTL_DEL: vep_idx %u, sid %u!",
getpid (), vep_idx, session_index);
vcl_evt (VCL_EVT_EPOLL_CTLDEL, session, vep_idx);
break;
default:
clib_warning ("VCL<%d>: ERROR: Invalid operation (%d)!", getpid (), op);
rv = VPPCOM_EINVAL;
}
vep_verify_epoll_chain (vep_idx);
done:
VCL_SESSION_UNLOCK ();
return rv;
}
int
vppcom_epoll_wait (uint32_t vep_idx, struct epoll_event *events,
int maxevents, double wait_for_time)
{
vcl_session_t *vep_session;
int rv;
f64 timeout = clib_time_now (&vcm->clib_time) + wait_for_time;
u32 keep_trying = 1;
int num_ev = 0;
u32 vep_next_sid, wait_cont_idx;
u8 is_vep;
if (PREDICT_FALSE (maxevents <= 0))
{
clib_warning ("VCL<%d>: ERROR: Invalid maxevents (%d)!",
getpid (), maxevents);
return VPPCOM_EINVAL;
}
memset (events, 0, sizeof (*events) * maxevents);
VCL_SESSION_LOCK_AND_GET (vep_idx, &vep_session);
vep_next_sid = vep_session->vep.next_sid;
is_vep = vep_session->is_vep;
wait_cont_idx = vep_session->wait_cont_idx;
VCL_SESSION_UNLOCK ();
if (PREDICT_FALSE (!is_vep))
{
clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!",
getpid (), vep_idx);
rv = VPPCOM_EINVAL;
goto done;
}
if (PREDICT_FALSE (vep_next_sid == ~0))
{
VDBG (1, "VCL<%d>: WARNING: vep_idx (%u) is empty!",
getpid (), vep_idx);
goto done;
}
do
{
u32 sid;
u32 next_sid = ~0;
vcl_session_t *session;
for (sid = (wait_cont_idx == ~0) ? vep_next_sid : wait_cont_idx;
sid != ~0; sid = next_sid)
{
u32 session_events, et_mask, clear_et_mask, session_vep_idx;
u8 add_event, is_vep_session;
int ready;
u64 session_ev_data;
VCL_SESSION_LOCK_AND_GET (sid, &session);
next_sid = session->vep.next_sid;
session_events = session->vep.ev.events;
et_mask = session->vep.et_mask;
is_vep = session->is_vep;
is_vep_session = session->is_vep_session;
session_vep_idx = session->vep.vep_idx;
session_ev_data = session->vep.ev.data.u64;
VCL_SESSION_UNLOCK ();
if (PREDICT_FALSE (is_vep))
{
VDBG (0, "VCL<%d>: ERROR: sid (%u) is a vep!",
getpid (), vep_idx);
rv = VPPCOM_EINVAL;
goto done;
}
if (PREDICT_FALSE (!is_vep_session))
{
VDBG (0, "VCL<%d>: ERROR: session (%u) is not "
"a vep session!", getpid (), sid);
rv = VPPCOM_EINVAL;
goto done;
}
if (PREDICT_FALSE (session_vep_idx != vep_idx))
{
clib_warning ("VCL<%d>: ERROR: session (%u) "
"vep_idx (%u) != vep_idx (%u)!",
getpid (), sid, session_vep_idx, vep_idx);
rv = VPPCOM_EINVAL;
goto done;
}
add_event = clear_et_mask = 0;
if (EPOLLIN & session_events)
{
VCL_SESSION_LOCK_AND_GET (sid, &session);
ready = vppcom_session_read_ready (session, sid);
VCL_SESSION_UNLOCK ();
if ((ready > 0) && (EPOLLIN & et_mask))
{
add_event = 1;
events[num_ev].events |= EPOLLIN;
if (((EPOLLET | EPOLLIN) & session_events) ==
(EPOLLET | EPOLLIN))
clear_et_mask |= EPOLLIN;
}
else if (ready < 0)
{
add_event = 1;
switch (ready)
{
case VPPCOM_ECONNRESET:
events[num_ev].events |= EPOLLHUP | EPOLLRDHUP;
break;
default:
events[num_ev].events |= EPOLLERR;
break;
}
}
}
if (EPOLLOUT & session_events)
{
VCL_SESSION_LOCK_AND_GET (sid, &session);
ready = vppcom_session_write_ready (session, sid);
VCL_SESSION_UNLOCK ();
if ((ready > 0) && (EPOLLOUT & et_mask))
{
add_event = 1;
events[num_ev].events |= EPOLLOUT;
if (((EPOLLET | EPOLLOUT) & session_events) ==
(EPOLLET | EPOLLOUT))
clear_et_mask |= EPOLLOUT;
}
else if (ready < 0)
{
add_event = 1;
switch (ready)
{
case VPPCOM_ECONNRESET:
events[num_ev].events |= EPOLLHUP;
break;
default:
events[num_ev].events |= EPOLLERR;
break;
}
}
}
if (add_event)
{
events[num_ev].data.u64 = session_ev_data;
if (EPOLLONESHOT & session_events)
{
VCL_SESSION_LOCK_AND_GET (sid, &session);
session->vep.ev.events = 0;
VCL_SESSION_UNLOCK ();
}
num_ev++;
if (num_ev == maxevents)
{
VCL_SESSION_LOCK_AND_GET (vep_idx, &vep_session);
vep_session->wait_cont_idx = next_sid;
VCL_SESSION_UNLOCK ();
goto done;
}
}
if (wait_cont_idx != ~0)
{
if (next_sid == ~0)
next_sid = vep_next_sid;
else if (next_sid == wait_cont_idx)
next_sid = ~0;
}
}
if (wait_for_time != -1)
keep_trying = (clib_time_now (&vcm->clib_time) <= timeout) ? 1 : 0;
}
while ((num_ev == 0) && keep_trying);
if (wait_cont_idx != ~0)
{
VCL_SESSION_LOCK_AND_GET (vep_idx, &vep_session);
vep_session->wait_cont_idx = ~0;
VCL_SESSION_UNLOCK ();
}
done:
return (rv != VPPCOM_OK) ? rv : num_ev;
}
int
vppcom_session_attr (uint32_t session_index, uint32_t op,
void *buffer, uint32_t * buflen)
{
vcl_session_t *session;
int rv = VPPCOM_OK;
u32 *flags = buffer;
vppcom_endpt_t *ep = buffer;
VCL_SESSION_LOCK_AND_GET (session_index, &session);
ASSERT (session);
switch (op)
{
case VPPCOM_ATTR_GET_NREAD:
rv = vppcom_session_read_ready (session, session_index);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NREAD: sid %u, nread = %d",
getpid (), rv);
break;
case VPPCOM_ATTR_GET_NWRITE:
rv = vppcom_session_write_ready (session, session_index);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NWRITE: sid %u, nwrite = %d",
getpid (), session_index, rv);
break;
case VPPCOM_ATTR_GET_FLAGS:
if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*flags))))
{
*flags = O_RDWR | (VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_NONBLOCK));
*buflen = sizeof (*flags);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_FLAGS: sid %u, flags = 0x%08x, "
"is_nonblocking = %u", getpid (),
session_index, *flags,
VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_SET_FLAGS:
if (PREDICT_TRUE (buffer && buflen && (*buflen == sizeof (*flags))))
{
if (*flags & O_NONBLOCK)
VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK);
else
VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_NONBLOCK);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_FLAGS: sid %u, flags = 0x%08x,"
" is_nonblocking = %u",
getpid (), session_index, *flags,
VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK));
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_PEER_ADDR:
if (PREDICT_TRUE (buffer && buflen &&
(*buflen >= sizeof (*ep)) && ep->ip))
{
ep->is_ip4 = session->transport.is_ip4;
ep->port = session->transport.rmt_port;
if (session->transport.is_ip4)
clib_memcpy (ep->ip, &session->transport.rmt_ip.ip4,
sizeof (ip4_address_t));
else
clib_memcpy (ep->ip, &session->transport.rmt_ip.ip6,
sizeof (ip6_address_t));
*buflen = sizeof (*ep);
VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_PEER_ADDR: sid %u, is_ip4 = %u, "
"addr = %U, port %u", getpid (),
session_index, 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 (ep->ip, &session->transport.lcl_ip.ip4,
sizeof (ip4_address_t));
else
clib_memcpy (ep->ip, &session->transport.lcl_ip.ip6,
sizeof (ip6_address_t));
*buflen = sizeof (*ep);
VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_LCL_ADDR: sid %u, is_ip4 = %u,"
" addr = %U port %d", getpid (),
session_index, 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, "VCL<%d>: VPPCOM_ATTR_GET_LIBC_EPFD: libc_epfd %d",
getpid (), 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, "VCL<%d>: VPPCOM_ATTR_SET_LIBC_EPFD: libc_epfd %d, "
"buflen %d", getpid (), 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, "VCL<%d>: VPPCOM_ATTR_GET_PROTOCOL: %d (%s), buflen %d",
getpid (), *(int *) buffer, *(int *) buffer ? "UDP" : "TCP",
*buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_LISTEN:
if (buffer && buflen && (*buflen >= sizeof (int)))
{
*(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_LISTEN);
*buflen = sizeof (int);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_LISTEN: %d, buflen %d",
getpid (), *(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, "VCL<%d>: VPPCOM_ATTR_GET_ERROR: %d, buflen %d, #VPP-TBD#",
getpid (), *(int *) buffer, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_TX_FIFO_LEN:
if (buffer && buflen && (*buflen >= sizeof (u32)))
{
/* VPP-TBD */
*(size_t *) buffer = (session->sndbuf_size ? session->sndbuf_size :
session->tx_fifo ? session->tx_fifo->nitems :
vcm->cfg.tx_fifo_size);
*buflen = sizeof (u32);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TX_FIFO_LEN: %u (0x%x), "
"buflen %d, #VPP-TBD#", getpid (),
*(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, "VCL<%d>: VPPCOM_ATTR_SET_TX_FIFO_LEN: %u (0x%x), "
"buflen %d, #VPP-TBD#", getpid (),
session->sndbuf_size, session->sndbuf_size, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_RX_FIFO_LEN:
if (buffer && buflen && (*buflen >= sizeof (u32)))
{
/* VPP-TBD */
*(size_t *) buffer = (session->rcvbuf_size ? session->rcvbuf_size :
session->rx_fifo ? session->rx_fifo->nitems :
vcm->cfg.rx_fifo_size);
*buflen = sizeof (u32);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_RX_FIFO_LEN: %u (0x%x), "
"buflen %d, #VPP-TBD#", getpid (),
*(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, "VCL<%d>: VPPCOM_ATTR_SET_RX_FIFO_LEN: %u (0x%x), "
"buflen %d, #VPP-TBD#", getpid (),
session->sndbuf_size, session->sndbuf_size, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_REUSEADDR:
if (buffer && buflen && (*buflen >= sizeof (int)))
{
/* VPP-TBD */
*(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_REUSEADDR);
*buflen = sizeof (int);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEADDR: %d, "
"buflen %d, #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_SET_REUSEADDR:
if (buffer && buflen && (*buflen == sizeof (int)) &&
!VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
{
/* VPP-TBD */
if (*(int *) buffer)
VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEADDR);
else
VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEADDR);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEADDR: %d, buflen %d,"
" #VPP-TBD#", getpid (),
VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_REUSEADDR), *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_REUSEPORT:
if (buffer && buflen && (*buflen >= sizeof (int)))
{
/* VPP-TBD */
*(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_REUSEPORT);
*buflen = sizeof (int);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_REUSEPORT: %d, buflen %d,"
" #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_SET_REUSEPORT:
if (buffer && buflen && (*buflen == sizeof (int)) &&
!VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN))
{
/* VPP-TBD */
if (*(int *) buffer)
VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEPORT);
else
VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEPORT);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_REUSEPORT: %d, buflen %d,"
" #VPP-TBD#", getpid (),
VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_REUSEPORT), *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_BROADCAST:
if (buffer && buflen && (*buflen >= sizeof (int)))
{
/* VPP-TBD */
*(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_BROADCAST);
*buflen = sizeof (int);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_BROADCAST: %d, buflen %d,"
" #VPP-TBD#", getpid (), *(int *) buffer, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_SET_BROADCAST:
if (buffer && buflen && (*buflen == sizeof (int)))
{
/* VPP-TBD */
if (*(int *) buffer)
VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_BROADCAST);
else
VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_BROADCAST);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_BROADCAST: %d, buflen %d, "
"#VPP-TBD#", getpid (),
VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_BROADCAST), *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_V6ONLY:
if (buffer && buflen && (*buflen >= sizeof (int)))
{
/* VPP-TBD */
*(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_V6ONLY);
*buflen = sizeof (int);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_V6ONLY: %d, buflen %d, "
"#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_SET_V6ONLY:
if (buffer && buflen && (*buflen == sizeof (int)))
{
/* VPP-TBD */
if (*(int *) buffer)
VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_V6ONLY);
else
VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_V6ONLY);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_V6ONLY: %d, buflen %d, "
"#VPP-TBD#", getpid (),
VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_V6ONLY), *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_KEEPALIVE:
if (buffer && buflen && (*buflen >= sizeof (int)))
{
/* VPP-TBD */
*(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_KEEPALIVE);
*buflen = sizeof (int);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_KEEPALIVE: %d, buflen %d, "
"#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_SET_KEEPALIVE:
if (buffer && buflen && (*buflen == sizeof (int)))
{
/* VPP-TBD */
if (*(int *) buffer)
VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_KEEPALIVE);
else
VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_KEEPALIVE);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_KEEPALIVE: %d, buflen %d, "
"#VPP-TBD#", getpid (),
VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_KEEPALIVE), *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_TCP_NODELAY:
if (buffer && buflen && (*buflen >= sizeof (int)))
{
/* VPP-TBD */
*(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_TCP_NODELAY);
*buflen = sizeof (int);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_NODELAY: %d, buflen %d, "
"#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_SET_TCP_NODELAY:
if (buffer && buflen && (*buflen == sizeof (int)))
{
/* VPP-TBD */
if (*(int *) buffer)
VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
else
VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_NODELAY);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_NODELAY: %d, buflen %d, "
"#VPP-TBD#", getpid (),
VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_TCP_NODELAY), *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_TCP_KEEPIDLE:
if (buffer && buflen && (*buflen >= sizeof (int)))
{
/* VPP-TBD */
*(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_TCP_KEEPIDLE);
*buflen = sizeof (int);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPIDLE: %d, buflen %d, "
"#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_SET_TCP_KEEPIDLE:
if (buffer && buflen && (*buflen == sizeof (int)))
{
/* VPP-TBD */
if (*(int *) buffer)
VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
else
VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPIDLE: %d, buflen %d, "
"#VPP-TBD#", getpid (),
VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_TCP_KEEPIDLE), *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_TCP_KEEPINTVL:
if (buffer && buflen && (*buflen >= sizeof (int)))
{
/* VPP-TBD */
*(int *) buffer = VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_TCP_KEEPINTVL);
*buflen = sizeof (int);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPINTVL: %d, buflen %d, "
"#VPP-TBD#", getpid (), *(int *) buffer, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_SET_TCP_KEEPINTVL:
if (buffer && buflen && (*buflen == sizeof (int)))
{
/* VPP-TBD */
if (*(int *) buffer)
VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
else
VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPINTVL: %d, buflen %d, "
"#VPP-TBD#", getpid (),
VCL_SESS_ATTR_TEST (session->attr,
VCL_SESS_ATTR_TCP_KEEPINTVL), *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
case VPPCOM_ATTR_GET_TCP_USER_MSS:
if (buffer && buflen && (*buflen >= sizeof (u32)))
{
/* VPP-TBD */
*(u32 *) buffer = session->user_mss;
*buflen = sizeof (int);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TCP_USER_MSS: %d, buflen %d,"
" #VPP-TBD#", getpid (), *(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, "VCL<%d>: VPPCOM_ATTR_SET_TCP_USER_MSS: %u, buflen %d, "
"#VPP-TBD#", getpid (), session->user_mss, *buflen);
}
else
rv = VPPCOM_EINVAL;
break;
default:
rv = VPPCOM_EINVAL;
break;
}
done:
VCL_SESSION_UNLOCK ();
return rv;
}
int
vppcom_session_recvfrom (uint32_t session_index, void *buffer,
uint32_t buflen, int flags, vppcom_endpt_t * ep)
{
int rv = VPPCOM_OK;
vcl_session_t *session = 0;
if (ep)
{
VCL_SESSION_LOCK ();
rv = vppcom_session_at_index (session_index, &session);
if (PREDICT_FALSE (rv))
{
VCL_SESSION_UNLOCK ();
VDBG (0, "VCL<%d>: invalid session, sid (%u) has been closed!",
getpid (), session_index);
rv = VPPCOM_EBADFD;
VCL_SESSION_UNLOCK ();
goto done;
}
ep->is_ip4 = session->transport.is_ip4;
ep->port = session->transport.rmt_port;
if (session->transport.is_ip4)
clib_memcpy (ep->ip, &session->transport.rmt_ip.ip4,
sizeof (ip4_address_t));
else
clib_memcpy (ep->ip, &session->transport.rmt_ip.ip6,
sizeof (ip6_address_t));
VCL_SESSION_UNLOCK ();
}
if (flags == 0)
rv = vppcom_session_read (session_index, buffer, buflen);
else if (flags & MSG_PEEK)
rv = vppcom_session_peek (session_index, buffer, buflen);
else
{
clib_warning ("VCL<%d>: Unsupport flags for recvfrom %d",
getpid (), flags);
rv = VPPCOM_EAFNOSUPPORT;
}
done:
return rv;
}
int
vppcom_session_sendto (uint32_t session_index, void *buffer,
uint32_t buflen, int flags, vppcom_endpt_t * ep)
{
if (!buffer)
return VPPCOM_EINVAL;
if (ep)
{
// TBD
return VPPCOM_EINVAL;
}
if (flags)
{
// TBD check the flags and do the right thing
VDBG (2, "VCL<%d>: handling flags 0x%u (%d) not implemented yet.",
getpid (), flags, flags);
}
return (vppcom_session_write (session_index, buffer, buflen));
}
int
vppcom_poll (vcl_poll_t * vp, uint32_t n_sids, double wait_for_time)
{
f64 timeout = clib_time_now (&vcm->clib_time) + wait_for_time;
u32 i, keep_trying = 1;
int rv, num_ev = 0;
VDBG (3, "VCL<%d>: vp %p, nsids %u, wait_for_time %f",
getpid (), vp, n_sids, wait_for_time);
if (!vp)
return VPPCOM_EFAULT;
do
{
vcl_session_t *session;
for (i = 0; i < n_sids; i++)
{
ASSERT (vp[i].revents);
VCL_SESSION_LOCK_AND_GET (vp[i].sid, &session);
VCL_SESSION_UNLOCK ();
if (*vp[i].revents)
*vp[i].revents = 0;
if (POLLIN & vp[i].events)
{
VCL_SESSION_LOCK_AND_GET (vp[i].sid, &session);
rv = vppcom_session_read_ready (session, vp[i].sid);
VCL_SESSION_UNLOCK ();
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)
{
VCL_SESSION_LOCK_AND_GET (vp[i].sid, &session);
rv = vppcom_session_write_ready (session, vp[i].sid);
VCL_SESSION_UNLOCK ();
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()
{
done:
*vp[i].revents = POLLNVAL;
num_ev++;
}
}
if (wait_for_time != -1)
keep_trying = (clib_time_now (&vcm->clib_time) <= timeout) ? 1 : 0;
}
while ((num_ev == 0) && keep_trying);
if (VPPCOM_DEBUG > 3)
{
clib_warning ("VCL<%d>: returning %d", getpid (), num_ev);
for (i = 0; i < n_sids; i++)
{
clib_warning ("VCL<%d>: vp[%d].sid %d (0x%x), .events 0x%x, "
".revents 0x%x", getpid (), i, vp[i].sid, vp[i].sid,
vp[i].events, *vp[i].revents);
}
}
return num_ev;
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/