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authorFlorin Coras <fcoras@cisco.com>2019-01-18 08:37:13 -0800
committerDamjan Marion <dmarion@me.com>2019-01-29 16:36:06 +0000
commit0ef8ef2b474473b13de2cee0165b424e79e4e363 (patch)
treebce10bafb40e25844d25604a33095c376e135b0e /src/vcl
parentcac8cfaba977d3822c06452817e43d7f0bdaa189 (diff)
vls: multi-process and multi-threaded apps improvements
- More fine tuning for multi-process applications. - Experimental support for multi-thread apps. This is meant for app whose threads are not vcl workers and the sessions are shared between them. Change-Id: Ie07651da5f2cdcf39f5dead5431f50ad39cf3f74 Signed-off-by: Florin Coras <fcoras@cisco.com>
Diffstat (limited to 'src/vcl')
-rw-r--r--src/vcl/ldp.c19
-rw-r--r--src/vcl/vcl_locked.c293
-rw-r--r--src/vcl/vcl_locked.h2
-rw-r--r--src/vcl/vcl_private.c64
-rw-r--r--src/vcl/vcl_private.h3
-rw-r--r--src/vcl/vppcom.c82
6 files changed, 341 insertions, 122 deletions
diff --git a/src/vcl/ldp.c b/src/vcl/ldp.c
index 36cff2a67f1..ab4cfbfa257 100644
--- a/src/vcl/ldp.c
+++ b/src/vcl/ldp.c
@@ -739,10 +739,9 @@ ldp_pselect (int nfds, fd_set * __restrict readfds,
vec_len (ldpw->ex_bitmap) *
sizeof (clib_bitmap_t));
- rv = vppcom_select (si_bits, readfds ? ldpw->rd_bitmap : NULL,
- writefds ? ldpw->wr_bitmap : NULL,
- exceptfds ? ldpw->ex_bitmap : NULL,
- vcl_timeout);
+ rv = vls_select (si_bits, readfds ? ldpw->rd_bitmap : NULL,
+ writefds ? ldpw->wr_bitmap : NULL,
+ exceptfds ? ldpw->ex_bitmap : NULL, vcl_timeout);
if (rv < 0)
{
errno = -rv;
@@ -2370,16 +2369,18 @@ ldp_constructor (void)
void
ldp_destructor (void)
{
- swrap_destructor ();
- if (ldp->init)
- ldp->init = 0;
+ /*
+ swrap_destructor ();
+ if (ldp->init)
+ ldp->init = 0;
+ */
/* Don't use clib_warning() here because that calls writev()
* which will call ldp_init().
*/
if (LDP_DEBUG > 0)
- printf ("%s:%d: LDP<%d>: LDP destructor: done!\n",
- __func__, __LINE__, getpid ());
+ fprintf (stderr, "%s:%d: LDP<%d>: LDP destructor: done!\n",
+ __func__, __LINE__, getpid ());
}
diff --git a/src/vcl/vcl_locked.c b/src/vcl/vcl_locked.c
index c6c79cdd470..8a8d7d9d66b 100644
--- a/src/vcl/vcl_locked.c
+++ b/src/vcl/vcl_locked.c
@@ -60,6 +60,56 @@ vls_table_wunlock (void)
clib_rwlock_writer_unlock (&vlsm->vls_table_lock);
}
+typedef enum
+{
+ VLS_MT_OP_READ,
+ VLS_MT_OP_WRITE,
+ VLS_MT_OP_SPOOL,
+ VLS_MT_OP_XPOLL,
+} vls_mt_ops_t;
+
+typedef enum
+{
+ VLS_MT_LOCK_MQ = 1 << 0,
+ VLS_MT_LOCK_SPOOL = 1 << 1
+} vls_mt_lock_type_t;
+
+static int vls_wrk_index = ~0;
+static volatile int vls_mt_n_threads;
+static pthread_mutex_t vls_mt_mq_mlock = PTHREAD_MUTEX_INITIALIZER;
+static pthread_mutex_t vls_mt_spool_mlock = PTHREAD_MUTEX_INITIALIZER;
+
+static void
+vls_mt_add (void)
+{
+ vls_mt_n_threads += 1;
+ vcl_set_worker_index (vls_wrk_index);
+}
+
+static inline void
+vls_mt_mq_lock (void)
+{
+ pthread_mutex_lock (&vls_mt_mq_mlock);
+}
+
+static inline void
+vls_mt_mq_unlock (void)
+{
+ pthread_mutex_unlock (&vls_mt_mq_mlock);
+}
+
+static inline void
+vls_mt_spool_lock (void)
+{
+ pthread_mutex_lock (&vls_mt_spool_mlock);
+}
+
+static inline void
+vls_mt_create_unlock (void)
+{
+ pthread_mutex_unlock (&vls_mt_spool_mlock);
+}
+
static inline vcl_session_handle_t
vls_to_sh (vcl_locked_session_t * vls)
{
@@ -101,12 +151,12 @@ vls_get (vls_handle_t vlsh)
}
static void
-vls_free (vcl_locked_session_t * fde)
+vls_free (vcl_locked_session_t * vls)
{
- ASSERT (fde != 0);
- hash_unset (vlsm->session_index_to_vlsh_table, fde->session_index);
- clib_spinlock_free (&fde->lock);
- pool_put (vlsm->vls_pool, fde);
+ ASSERT (vls != 0);
+ hash_unset (vlsm->session_index_to_vlsh_table, vls->session_index);
+ clib_spinlock_free (&vls->lock);
+ pool_put (vlsm->vls_pool, vls);
}
static vcl_locked_session_t *
@@ -154,27 +204,25 @@ vls_dunlock (vcl_locked_session_t * vls)
vls_table_runlock ();
}
-static void
-vls_get_and_free (vls_handle_t vlsh)
+u8
+vls_is_shared (vcl_locked_session_t * vls)
{
- vcl_locked_session_t *vls;
-
- vls_table_wlock ();
- vls = vls_get (vlsh);
- vls_free (vls);
- vls_table_wunlock ();
+ return vec_len (vls->workers_subscribed);
}
u8
-vls_is_shared (vcl_locked_session_t * vls)
+vls_is_shared_by_wrk (vcl_locked_session_t * vls, u32 wrk_index)
{
- return vec_len (vls->workers_subscribed);
+ int i;
+ for (i = 0; i < vec_len (vls->workers_subscribed); i++)
+ if (vls->workers_subscribed[i] == wrk_index)
+ return 1;
+ return 0;
}
int
-vls_unshare_session (vcl_locked_session_t * vls)
+vls_unshare_session (vcl_locked_session_t * vls, vcl_worker_t * wrk)
{
- vcl_worker_t *wrk = vcl_worker_get_current ();
vcl_session_t *s;
int i;
@@ -195,17 +243,26 @@ vls_unshare_session (vcl_locked_session_t * vls)
return 0;
}
- /* Assumption is that unshare is only called if session is shared.
- * So shared_workers must be non-empty if the worker is the owner */
- if (vls->worker_index == wrk->wrk_index)
+ /* Return, if this is not the owning worker */
+ if (vls->worker_index != wrk->wrk_index)
+ return 0;
+
+ s = vcl_session_get (wrk, vls->session_index);
+
+ /* Check if we can change owner or close */
+ if (vec_len (vls->workers_subscribed))
{
- s = vcl_session_get (wrk, vls->session_index);
vls->worker_index = vls->workers_subscribed[0];
vec_del1 (vls->workers_subscribed, 0);
vcl_send_session_worker_update (wrk, s, vls->worker_index);
if (vec_len (vls->workers_subscribed))
clib_warning ("more workers need to be updated");
}
+ else
+ {
+ vcl_session_cleanup (wrk, s, vcl_session_handle (s),
+ 1 /* do_disconnect */ );
+ }
return 0;
}
@@ -245,6 +302,74 @@ vls_worker_copy_on_fork (vcl_worker_t * parent_wrk)
/* *INDENT-ON* */
}
+static void
+vls_mt_acq_locks (vcl_locked_session_t * vls, vls_mt_ops_t op, int *locks_acq)
+{
+ vcl_worker_t *wrk = vcl_worker_get_current ();
+ vcl_session_t *s = 0;
+ int is_nonblk = 0;
+
+ if (vls)
+ {
+ s = vcl_session_get (wrk, vls->session_index);
+ if (PREDICT_FALSE (!s))
+ return;
+ is_nonblk = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK);
+ }
+
+ switch (op)
+ {
+ case VLS_MT_OP_READ:
+ if (!is_nonblk)
+ is_nonblk = vcl_session_read_ready (s) != 0;
+ if (!is_nonblk)
+ {
+ vls_mt_mq_lock ();
+ *locks_acq |= VLS_MT_LOCK_MQ;
+ }
+ break;
+ case VLS_MT_OP_WRITE:
+ if (!is_nonblk)
+ is_nonblk = vcl_session_write_ready (s) != 0;
+ if (!is_nonblk)
+ {
+ vls_mt_mq_lock ();
+ *locks_acq |= VLS_MT_LOCK_MQ;
+ }
+ break;
+ case VLS_MT_OP_XPOLL:
+ vls_mt_mq_lock ();
+ *locks_acq |= VLS_MT_LOCK_MQ;
+ break;
+ case VLS_MT_OP_SPOOL:
+ vls_mt_spool_lock ();
+ *locks_acq |= VLS_MT_LOCK_SPOOL;
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+vls_mt_rel_locks (int locks_acq)
+{
+ if (locks_acq & VLS_MT_LOCK_MQ)
+ vls_mt_mq_unlock ();
+ if (locks_acq & VLS_MT_LOCK_SPOOL)
+ vls_mt_create_unlock ();
+}
+
+#define vls_mt_guard(_vls, _op) \
+ int _locks_acq = 0; \
+ if (PREDICT_FALSE (vcl_get_worker_index () == ~0)); \
+ vls_mt_add (); \
+ if (PREDICT_FALSE (vls_mt_n_threads > 1)) \
+ vls_mt_acq_locks (_vls, _op, &_locks_acq); \
+
+#define vls_mt_unguard() \
+ if (PREDICT_FALSE (_locks_acq)) \
+ vls_mt_rel_locks (_locks_acq)
+
int
vls_write (vls_handle_t vlsh, void *buf, size_t nbytes)
{
@@ -253,7 +378,10 @@ vls_write (vls_handle_t vlsh, void *buf, size_t nbytes)
if (!(vls = vls_get_w_dlock (vlsh)))
return VPPCOM_EBADFD;
+
+ vls_mt_guard (vls, VLS_MT_OP_WRITE);
rv = vppcom_session_write (vls_to_sh_tu (vls), buf, nbytes);
+ vls_mt_unguard ();
vls_get_and_unlock (vlsh);
return rv;
}
@@ -266,7 +394,9 @@ vls_write_msg (vls_handle_t vlsh, void *buf, size_t nbytes)
if (!(vls = vls_get_w_dlock (vlsh)))
return VPPCOM_EBADFD;
+ vls_mt_guard (vls, VLS_MT_OP_WRITE);
rv = vppcom_session_write_msg (vls_to_sh_tu (vls), buf, nbytes);
+ vls_mt_unguard ();
vls_get_and_unlock (vlsh);
return rv;
}
@@ -280,7 +410,9 @@ vls_sendto (vls_handle_t vlsh, void *buf, int buflen, int flags,
if (!(vls = vls_get_w_dlock (vlsh)))
return VPPCOM_EBADFD;
+ vls_mt_guard (vls, VLS_MT_OP_WRITE);
rv = vppcom_session_sendto (vls_to_sh_tu (vls), buf, buflen, flags, ep);
+ vls_mt_unguard ();
vls_get_and_unlock (vlsh);
return rv;
}
@@ -293,7 +425,9 @@ vls_read (vls_handle_t vlsh, void *buf, size_t nbytes)
if (!(vls = vls_get_w_dlock (vlsh)))
return VPPCOM_EBADFD;
+ vls_mt_guard (vls, VLS_MT_OP_READ);
rv = vppcom_session_read (vls_to_sh_tu (vls), buf, nbytes);
+ vls_mt_unguard ();
vls_get_and_unlock (vlsh);
return rv;
}
@@ -307,8 +441,10 @@ vls_recvfrom (vls_handle_t vlsh, void *buffer, uint32_t buflen, int flags,
if (!(vls = vls_get_w_dlock (vlsh)))
return VPPCOM_EBADFD;
+ vls_mt_guard (vls, VLS_MT_OP_READ);
rv = vppcom_session_recvfrom (vls_to_sh_tu (vls), buffer, buflen, flags,
ep);
+ vls_mt_unguard ();
vls_get_and_unlock (vlsh);
return rv;
}
@@ -347,7 +483,9 @@ vls_listen (vls_handle_t vlsh, int q_len)
if (!(vls = vls_get_w_dlock (vlsh)))
return VPPCOM_EBADFD;
+ vls_mt_guard (vls, VLS_MT_OP_XPOLL);
rv = vppcom_session_listen (vls_to_sh_tu (vls), q_len);
+ vls_mt_unguard ();
vls_get_and_unlock (vlsh);
return rv;
}
@@ -360,7 +498,9 @@ vls_connect (vls_handle_t vlsh, vppcom_endpt_t * server_ep)
if (!(vls = vls_get_w_dlock (vlsh)))
return VPPCOM_EBADFD;
+ vls_mt_guard (vls, VLS_MT_OP_XPOLL);
rv = vppcom_session_connect (vls_to_sh_tu (vls), server_ep);
+ vls_mt_unguard ();
vls_get_and_unlock (vlsh);
return rv;
}
@@ -374,7 +514,9 @@ vls_accept (vls_handle_t listener_vlsh, vppcom_endpt_t * ep, int flags)
if (!(vls = vls_get_w_dlock (listener_vlsh)))
return VPPCOM_EBADFD;
+ vls_mt_guard (vls, VLS_MT_OP_SPOOL);
sh = vppcom_session_accept (vls_to_sh_tu (vls), ep, flags);
+ vls_mt_unguard ();
vls_get_and_unlock (listener_vlsh);
if (sh < 0)
return sh;
@@ -390,7 +532,9 @@ vls_create (uint8_t proto, uint8_t is_nonblocking)
vcl_session_handle_t sh;
vls_handle_t vlsh;
+ vls_mt_guard (0, VLS_MT_OP_SPOOL);
sh = vppcom_session_create (proto, is_nonblocking);
+ vls_mt_unguard ();
if (sh == INVALID_SESSION_ID)
return VLS_INVALID_HANDLE;
@@ -405,28 +549,34 @@ int
vls_close (vls_handle_t vlsh)
{
vcl_locked_session_t *vls;
- vcl_session_handle_t sh;
int rv;
- if (!(vls = vls_get_w_dlock (vlsh)))
- return VPPCOM_EBADFD;
+ vls_table_wlock ();
- if (vls_is_shared (vls))
+ vls = vls_get_and_lock (vlsh);
+ if (!vls)
{
- vls_unshare_session (vls);
- vls_dunlock (vls);
- return VPPCOM_OK;
+ vls_table_wunlock ();
+ return VPPCOM_EBADFD;
}
- sh = vls_to_sh (vls);
- if ((rv = vppcom_session_close (sh)))
+ vls_mt_guard (0, VLS_MT_OP_SPOOL);
+ if (vls_is_shared (vls))
{
- vls_dunlock (vls);
- return rv;
+ /* At least two workers share the session so vls won't be freed */
+ vls_unshare_session (vls, vcl_worker_get_current ());
+ vls_unlock (vls);
+ vls_mt_unguard ();
+ vls_table_wunlock ();
+ return VPPCOM_OK;
}
- vls_dunlock (vls);
- vls_get_and_free (vlsh);
+ rv = vppcom_session_close (vls_to_sh (vls));
+ vls_free (vls);
+ vls_mt_unguard ();
+
+ vls_table_wunlock ();
+
return rv;
}
@@ -482,12 +632,25 @@ vls_epoll_wait (vls_handle_t ep_vlsh, struct epoll_event *events,
if (!(vls = vls_get_w_dlock (ep_vlsh)))
return VPPCOM_EBADFD;
+ vls_mt_guard (0, VLS_MT_OP_XPOLL);
rv = vppcom_epoll_wait (vls_to_sh_tu (vls), events, maxevents,
wait_for_time);
+ vls_mt_unguard ();
vls_get_and_unlock (ep_vlsh);
return rv;
}
+int
+vls_select (int n_bits, vcl_si_set * read_map, vcl_si_set * write_map,
+ vcl_si_set * except_map, double wait_for_time)
+{
+ int rv;
+ vls_mt_guard (0, VLS_MT_OP_XPOLL);
+ rv = vppcom_select (n_bits, read_map, write_map, except_map, wait_for_time);
+ vls_mt_unguard ();
+ return rv;
+}
+
vcl_session_handle_t
vlsh_to_sh (vls_handle_t vlsh)
{
@@ -511,20 +674,57 @@ vlsh_to_session_index (vls_handle_t vlsh)
}
vls_handle_t
+vls_si_to_vlsh (u32 session_index)
+{
+ uword *vlshp;
+ vlshp = hash_get (vlsm->session_index_to_vlsh_table, session_index);
+ return vlshp ? *vlshp : VLS_INVALID_HANDLE;
+}
+
+vls_handle_t
vls_session_index_to_vlsh (uint32_t session_index)
{
vls_handle_t vlsh;
- uword *vlshp;
vls_table_rlock ();
- vlshp = hash_get (vlsm->session_index_to_vlsh_table, session_index);
- vlsh = vlshp ? *vlshp : VLS_INVALID_HANDLE;
+ vlsh = vls_si_to_vlsh (session_index);
vls_table_runlock ();
return vlsh;
}
static void
+vls_unshare_vcl_worker_sessions (vcl_worker_t * wrk)
+{
+ u32 current_wrk, is_current;
+ vcl_locked_session_t *vls;
+ vcl_session_t *s;
+
+ current_wrk = vcl_get_worker_index ();
+ is_current = current_wrk == wrk->wrk_index;
+ vls_table_wlock ();
+
+ /* *INDENT-OFF* */
+ pool_foreach (s, wrk->sessions, ({
+ vls = vls_get (vls_si_to_vlsh (s->session_index));
+ if (vls && (is_current || vls_is_shared_by_wrk (vls, current_wrk)))
+ vls_unshare_session (vls, wrk);
+ }));
+ /* *INDENT-ON* */
+
+ vls_table_wunlock ();
+}
+
+static void
+vls_cleanup_vcl_worker (vcl_worker_t * wrk)
+{
+ /* Unshare sessions and also cleanup worker since child may have
+ * called _exit () and therefore vcl may not catch the event */
+ vls_unshare_vcl_worker_sessions (wrk);
+ vcl_worker_cleanup (wrk, 1 /* notify vpp */ );
+}
+
+static void
vls_cleanup_forked_child (vcl_worker_t * wrk, vcl_worker_t * child_wrk)
{
vcl_worker_t *sub_child;
@@ -542,8 +742,8 @@ vls_cleanup_forked_child (vcl_worker_t * wrk, vcl_worker_t * child_wrk)
vls_cleanup_forked_child (child_wrk, sub_child);
}
}
- vcl_worker_cleanup (child_wrk, 1 /* notify vpp */ );
- VDBG (0, "Cleaned up wrk %u", child_wrk->wrk_index);
+ vls_cleanup_vcl_worker (child_wrk);
+ VDBG (0, "Cleaned up forked child wrk %u", child_wrk->wrk_index);
wrk->forked_child = ~0;
}
@@ -654,6 +854,10 @@ vls_app_fork_child_handler (void)
vls_worker_copy_on_fork (parent_wrk);
parent_wrk->forked_child = vcl_get_worker_index ();
+ /* Reset number of threads and set wrk index */
+ vls_mt_n_threads = 0;
+ vls_wrk_index = vcl_get_worker_index ();
+
VDBG (0, "forked child main worker initialized");
vcm->forking = 0;
}
@@ -666,15 +870,26 @@ vls_app_fork_parent_handler (void)
;
}
+void
+vls_app_exit (void)
+{
+ /* Unshare the sessions. VCL will clean up the worker */
+ vls_unshare_vcl_worker_sessions (vcl_worker_get_current ());
+}
+
int
vls_app_create (char *app_name)
{
int rv;
+
if ((rv = vppcom_app_create (app_name)))
return rv;
+
clib_rwlock_init (&vlsm->vls_table_lock);
pthread_atfork (vls_app_pre_fork, vls_app_fork_parent_handler,
vls_app_fork_child_handler);
+ atexit (vls_app_exit);
+ vls_wrk_index = vcl_get_worker_index ();
return VPPCOM_OK;
}
diff --git a/src/vcl/vcl_locked.h b/src/vcl/vcl_locked.h
index 4f40f434cc5..2c8f2115230 100644
--- a/src/vcl/vcl_locked.h
+++ b/src/vcl/vcl_locked.h
@@ -44,6 +44,8 @@ int vls_epoll_ctl (vls_handle_t ep_vlsh, int op, vls_handle_t vlsh,
struct epoll_event *event);
int vls_epoll_wait (vls_handle_t ep_vlsh, struct epoll_event *events,
int maxevents, double wait_for_time);
+int vls_select (int n_bits, vcl_si_set * read_map, vcl_si_set * write_map,
+ vcl_si_set * except_map, double wait_for_time);
vcl_session_handle_t vlsh_to_sh (vls_handle_t vlsh);
vcl_session_handle_t vlsh_to_session_index (vls_handle_t vlsh);
vls_handle_t vls_session_index_to_vlsh (uint32_t session_index);
diff --git a/src/vcl/vcl_private.c b/src/vcl/vcl_private.c
index df602b3ce87..5f9ce270508 100644
--- a/src/vcl/vcl_private.c
+++ b/src/vcl/vcl_private.c
@@ -391,6 +391,70 @@ vcl_cleanup_bapi (void)
vl_client_api_unmap ();
}
+int
+vcl_session_read_ready (vcl_session_t * session)
+{
+ /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
+ if (PREDICT_FALSE (session->is_vep))
+ {
+ VDBG (0, "ERROR: session %u: cannot read from an epoll session!",
+ session->session_index);
+ return VPPCOM_EBADFD;
+ }
+
+ if (PREDICT_FALSE (!(session->session_state & (STATE_OPEN | STATE_LISTEN))))
+ {
+ session_state_t state = session->session_state;
+ int rv;
+
+ rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
+
+ VDBG (1, "session %u [0x%llx]: not open! state 0x%x (%s), ret %d (%s)",
+ session->session_index, session->vpp_handle, state,
+ vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
+ return rv;
+ }
+
+ if (session->session_state & STATE_LISTEN)
+ return clib_fifo_elts (session->accept_evts_fifo);
+
+ return svm_fifo_max_dequeue (session->rx_fifo);
+}
+
+int
+vcl_session_write_ready (vcl_session_t * session)
+{
+ /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
+ if (PREDICT_FALSE (session->is_vep))
+ {
+ VDBG (0, "session %u [0x%llx]: cannot write to an epoll session!",
+ session->session_index, session->vpp_handle);
+ return VPPCOM_EBADFD;
+ }
+
+ if (PREDICT_FALSE (session->session_state & STATE_LISTEN))
+ {
+ if (session->tx_fifo)
+ return svm_fifo_max_enqueue (session->tx_fifo);
+ else
+ return VPPCOM_EBADFD;
+ }
+
+ if (PREDICT_FALSE (!(session->session_state & STATE_OPEN)))
+ {
+ session_state_t state = session->session_state;
+ int rv;
+
+ rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
+ VDBG (0, "session %u [0x%llx]: not open! state 0x%x (%s), ret %d (%s)",
+ session->session_index, session->vpp_handle, state,
+ vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
+ return rv;
+ }
+
+ return svm_fifo_max_enqueue (session->tx_fifo);
+}
+
/*
* fd.io coding-style-patch-verification: ON
*
diff --git a/src/vcl/vcl_private.h b/src/vcl/vcl_private.h
index 08dfe428764..1cde85027a5 100644
--- a/src/vcl/vcl_private.h
+++ b/src/vcl/vcl_private.h
@@ -543,6 +543,9 @@ void vcl_segment_table_add (u64 segment_handle, u32 svm_segment_index);
u32 vcl_segment_table_lookup (u64 segment_handle);
void vcl_segment_table_del (u64 segment_handle);
+int vcl_session_read_ready (vcl_session_t * session);
+int vcl_session_write_ready (vcl_session_t * session);
+
static inline vcl_worker_t *
vcl_worker_get (u32 wrk_index)
{
diff --git a/src/vcl/vppcom.c b/src/vcl/vppcom.c
index 317351d7612..fc7d194bc12 100644
--- a/src/vcl/vppcom.c
+++ b/src/vcl/vppcom.c
@@ -1060,7 +1060,7 @@ vcl_session_cleanup (vcl_worker_t * wrk, vcl_session_t * session,
if (!do_disconnect)
{
- VDBG (0, "session %u [0x%llx] disconnect skipped",
+ VDBG (1, "session %u [0x%llx] disconnect skipped",
session->session_index, vpp_handle);
goto cleanup;
}
@@ -1106,11 +1106,11 @@ vcl_session_cleanup (vcl_worker_t * wrk, vcl_session_t * session,
vcl_ct_registration_unlock (wrk);
}
+ VDBG (0, "session %u [0x%llx] removed", session->session_index, vpp_handle);
+
cleanup:
vcl_session_table_del_vpp_handle (wrk, vpp_handle);
vcl_session_free (wrk, session);
-
- VDBG (0, "session %u [0x%llx] removed", session->session_index, vpp_handle);
vcl_evt (VCL_EVT_CLOSE, session, rv);
return rv;
@@ -1694,37 +1694,6 @@ vppcom_session_free_segments (uint32_t session_handle,
svm_fifo_segments_free (s->rx_fifo, (svm_fifo_segment_t *) ds);
}
-static inline int
-vppcom_session_read_ready (vcl_session_t * session)
-{
- /* 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->session_index);
- return VPPCOM_EBADFD;
- }
-
- if (PREDICT_FALSE (!(session->session_state & (STATE_OPEN | STATE_LISTEN))))
- {
- session_state_t state = session->session_state;
- int rv;
-
- 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 (),
- session->vpp_handle, session->session_index, state,
- vppcom_session_state_str (state), rv, vppcom_retval_str (rv));
- return rv;
- }
-
- if (session->session_state & STATE_LISTEN)
- return clib_fifo_elts (session->accept_evts_fifo);
-
- return svm_fifo_max_dequeue (session->rx_fifo);
-}
-
int
vppcom_data_segment_copy (void *buf, vppcom_data_segments_t ds, u32 max_bytes)
{
@@ -1878,41 +1847,6 @@ vcl_ct_session_get_from_fifo (vcl_worker_t * wrk, svm_fifo_t * f, u8 type)
return 0;
}
-static inline int
-vppcom_session_write_ready (vcl_session_t * session)
-{
- /* Assumes caller has acquired spinlock: vcm->sessions_lockp */
- if (PREDICT_FALSE (session->is_vep))
- {
- VDBG (0, "session %u [0x%llx]: cannot write to an epoll session!",
- session->session_index, session->vpp_handle);
- return VPPCOM_EBADFD;
- }
-
- if (PREDICT_FALSE (session->session_state & STATE_LISTEN))
- {
- if (session->tx_fifo)
- return svm_fifo_max_enqueue (session->tx_fifo);
- else
- return VPPCOM_EBADFD;
- }
-
- if (PREDICT_FALSE (!(session->session_state & STATE_OPEN)))
- {
- session_state_t state = session->session_state;
- int rv;
-
- rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN);
- VDBG (0, "session %u [0x%llx]: session is not open! state 0x%x (%s), "
- "returning %d (%s)", session->session_index, session->vpp_handle,
- state, vppcom_session_state_str (state), rv,
- vppcom_retval_str (rv));
- return rv;
- }
-
- return svm_fifo_max_enqueue (session->tx_fifo);
-}
-
#define vcl_fifo_rx_evt_valid_or_break(_fifo) \
if (PREDICT_FALSE (svm_fifo_is_empty (_fifo))) \
{ \
@@ -2207,7 +2141,7 @@ check_rd:
continue;
}
- rv = vppcom_session_read_ready (session);
+ rv = vcl_session_read_ready (session);
if (rv)
{
clib_bitmap_set_no_check ((uword*)read_map, sid, 1);
@@ -2840,12 +2774,12 @@ vppcom_session_attr (uint32_t session_handle, uint32_t op,
switch (op)
{
case VPPCOM_ATTR_GET_NREAD:
- rv = vppcom_session_read_ready (session);
+ rv = vcl_session_read_ready (session);
VDBG (2, "VPPCOM_ATTR_GET_NREAD: sid %u, nread = %d", rv);
break;
case VPPCOM_ATTR_GET_NWRITE:
- rv = vppcom_session_write_ready (session);
+ rv = vcl_session_write_ready (session);
VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NWRITE: sid %u, nwrite = %d",
getpid (), session_handle, rv);
break;
@@ -3484,7 +3418,7 @@ vppcom_poll (vcl_poll_t * vp, uint32_t n_sids, double wait_for_time)
if (POLLIN & vp[i].events)
{
- rv = vppcom_session_read_ready (session);
+ rv = vcl_session_read_ready (session);
if (rv > 0)
{
vp[i].revents |= POLLIN;
@@ -3508,7 +3442,7 @@ vppcom_poll (vcl_poll_t * vp, uint32_t n_sids, double wait_for_time)
if (POLLOUT & vp[i].events)
{
- rv = vppcom_session_write_ready (session);
+ rv = vcl_session_write_ready (session);
if (rv > 0)
{
vp[i].revents |= POLLOUT;