/*
- * Copyright (c) 2018 Cisco and/or its affiliates.
+ * Copyright (c) 2018-2019 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:
#include <vcl/vcl_private.h>
-vcl_cut_through_registration_t *
-vcl_ct_registration_lock_and_alloc (void)
+static pthread_key_t vcl_worker_stop_key;
+
+vcl_mq_evt_conn_t *
+vcl_mq_evt_conn_alloc (vcl_worker_t * wrk)
{
- vcl_cut_through_registration_t *cr;
- pool_get (vcm->cut_through_registrations, cr);
- clib_spinlock_lock (&vcm->ct_registration_lock);
- memset (cr, 0, sizeof (*cr));
- cr->epoll_evt_conn_index = -1;
- return cr;
+ vcl_mq_evt_conn_t *mqc;
+ pool_get (wrk->mq_evt_conns, mqc);
+ memset (mqc, 0, sizeof (*mqc));
+ return mqc;
}
u32
-vcl_ct_registration_index (vcl_cut_through_registration_t * ctr)
+vcl_mq_evt_conn_index (vcl_worker_t * wrk, vcl_mq_evt_conn_t * mqc)
{
- return (ctr - vcm->cut_through_registrations);
+ return (mqc - wrk->mq_evt_conns);
}
-void
-vcl_ct_registration_unlock (void)
+vcl_mq_evt_conn_t *
+vcl_mq_evt_conn_get (vcl_worker_t * wrk, u32 mq_conn_idx)
{
- clib_spinlock_unlock (&vcm->ct_registration_lock);
+ return pool_elt_at_index (wrk->mq_evt_conns, mq_conn_idx);
}
-vcl_cut_through_registration_t *
-vcl_ct_registration_get (u32 ctr_index)
+int
+vcl_mq_epoll_add_evfd (vcl_worker_t * wrk, svm_msg_q_t * mq)
{
- if (pool_is_free_index (vcm->cut_through_registrations, ctr_index))
- return 0;
- return pool_elt_at_index (vcm->cut_through_registrations, ctr_index);
+ struct epoll_event e = { 0 };
+ vcl_mq_evt_conn_t *mqc;
+ u32 mqc_index;
+ int mq_fd;
+
+ mq_fd = svm_msg_q_get_eventfd (mq);
+
+ if (wrk->mqs_epfd < 0 || mq_fd == -1)
+ return -1;
+
+ mqc = vcl_mq_evt_conn_alloc (wrk);
+ mqc_index = vcl_mq_evt_conn_index (wrk, mqc);
+ mqc->mq_fd = mq_fd;
+ mqc->mq = mq;
+
+ e.events = EPOLLIN;
+ e.data.u32 = mqc_index;
+ if (epoll_ctl (wrk->mqs_epfd, EPOLL_CTL_ADD, mq_fd, &e) < 0)
+ {
+ VDBG (0, "failed to add mq eventfd to mq epoll fd");
+ return -1;
+ }
+
+ return mqc_index;
}
-vcl_cut_through_registration_t *
-vcl_ct_registration_lock_and_lookup (uword mq_addr)
+int
+vcl_mq_epoll_del_evfd (vcl_worker_t * wrk, u32 mqc_index)
{
- uword *p;
- clib_spinlock_lock (&vcm->ct_registration_lock);
- p = hash_get (vcm->ct_registration_by_mq, mq_addr);
- if (!p)
- return 0;
- return vcl_ct_registration_get (p[0]);
+ vcl_mq_evt_conn_t *mqc;
+
+ if (wrk->mqs_epfd || mqc_index == ~0)
+ return -1;
+
+ mqc = vcl_mq_evt_conn_get (wrk, mqc_index);
+ if (epoll_ctl (wrk->mqs_epfd, EPOLL_CTL_DEL, mqc->mq_fd, 0) < 0)
+ {
+ VDBG (0, "failed to del mq eventfd to mq epoll fd");
+ return -1;
+ }
+ return 0;
}
-void
-vcl_ct_registration_lookup_add (uword mq_addr, u32 ctr_index)
+static vcl_worker_t *
+vcl_worker_alloc (void)
+{
+ vcl_worker_t *wrk;
+ pool_get (vcm->workers, wrk);
+ memset (wrk, 0, sizeof (*wrk));
+ wrk->wrk_index = wrk - vcm->workers;
+ wrk->forked_child = ~0;
+ return wrk;
+}
+
+static void
+vcl_worker_free (vcl_worker_t * wrk)
{
- hash_set (vcm->ct_registration_by_mq, mq_addr, ctr_index);
+ pool_put (vcm->workers, wrk);
+}
+
+int
+vcl_api_app_worker_add (void)
+{
+ if (vcm->cfg.vpp_app_socket_api)
+ return vcl_sapi_app_worker_add ();
+
+ return vcl_bapi_app_worker_add ();
}
void
-vcl_ct_registration_lookup_del (uword mq_addr)
+vcl_api_app_worker_del (vcl_worker_t * wrk)
{
- hash_unset (vcm->ct_registration_by_mq, mq_addr);
+ if (vcm->cfg.vpp_app_socket_api)
+ return vcl_sapi_app_worker_del (wrk);
+
+ vcl_bapi_app_worker_del (wrk);
}
void
-vcl_ct_registration_del (vcl_cut_through_registration_t * ctr)
+vcl_worker_cleanup (vcl_worker_t * wrk, u8 notify_vpp)
{
- pool_put (vcm->cut_through_registrations, ctr);
+ clib_spinlock_lock (&vcm->workers_lock);
+ if (notify_vpp)
+ vcl_api_app_worker_del (wrk);
+
+ if (wrk->mqs_epfd > 0)
+ close (wrk->mqs_epfd);
+ hash_free (wrk->session_index_by_vpp_handles);
+ vec_free (wrk->mq_events);
+ vec_free (wrk->mq_msg_vector);
+ vec_free (wrk->ep_level_evts);
+ vec_free (wrk->ep_level_evts_fl);
+ vcl_worker_free (wrk);
+ clib_spinlock_unlock (&vcm->workers_lock);
}
-vcl_mq_evt_conn_t *
-vcl_mq_evt_conn_alloc (void)
+static void
+vcl_worker_cleanup_cb (void *arg)
{
- vcl_mq_evt_conn_t *mqc;
- pool_get (vcm->mq_evt_conns, mqc);
- memset (mqc, 0, sizeof (*mqc));
- return mqc;
+ vcl_worker_t *wrk;
+ u32 wrk_index;
+
+ wrk_index = vcl_get_worker_index ();
+ wrk = vcl_worker_get_if_valid (wrk_index);
+ if (!wrk)
+ return;
+
+ vcl_worker_cleanup (wrk, 1 /* notify vpp */ );
+ vcl_set_worker_index (~0);
+ VDBG (0, "cleaned up worker %u", wrk_index);
}
-u32
-vcl_mq_evt_conn_index (vcl_mq_evt_conn_t * mqc)
+vcl_worker_t *
+vcl_worker_alloc_and_init ()
{
- return (mqc - vcm->mq_evt_conns);
+ vcl_worker_t *wrk;
+
+ /* This was initialized already */
+ if (vcl_get_worker_index () != ~0)
+ return 0;
+
+ /* Use separate heap map entry for worker */
+ clib_mem_set_thread_index ();
+
+ if (pool_elts (vcm->workers) == vcm->cfg.max_workers)
+ {
+ VDBG (0, "max-workers %u limit reached", vcm->cfg.max_workers);
+ return 0;
+ }
+
+ clib_spinlock_lock (&vcm->workers_lock);
+ wrk = vcl_worker_alloc ();
+ vcl_set_worker_index (wrk->wrk_index);
+ wrk->thread_id = pthread_self ();
+ wrk->current_pid = getpid ();
+
+ wrk->mqs_epfd = -1;
+ if (vcm->cfg.use_mq_eventfd)
+ {
+ wrk->vcl_needs_real_epoll = 1;
+ wrk->mqs_epfd = epoll_create (1);
+ wrk->vcl_needs_real_epoll = 0;
+ if (wrk->mqs_epfd < 0)
+ {
+ clib_unix_warning ("epoll_create() returned");
+ goto done;
+ }
+ }
+
+ wrk->session_index_by_vpp_handles = hash_create (0, sizeof (uword));
+ clib_time_init (&wrk->clib_time);
+ vec_validate (wrk->mq_events, 64);
+ vec_validate (wrk->mq_msg_vector, 128);
+ vec_reset_length (wrk->mq_msg_vector);
+ vec_validate (wrk->unhandled_evts_vector, 128);
+ vec_reset_length (wrk->unhandled_evts_vector);
+ clib_spinlock_unlock (&vcm->workers_lock);
+
+done:
+ return wrk;
}
-vcl_mq_evt_conn_t *
-vcl_mq_evt_conn_get (u32 mq_conn_idx)
+int
+vcl_worker_register_with_vpp (void)
+{
+ vcl_worker_t *wrk = vcl_worker_get_current ();
+
+ clib_spinlock_lock (&vcm->workers_lock);
+
+ if (vcl_api_app_worker_add ())
+ {
+ VDBG (0, "failed to add worker to vpp");
+ clib_spinlock_unlock (&vcm->workers_lock);
+ return -1;
+ }
+ if (pthread_key_create (&vcl_worker_stop_key, vcl_worker_cleanup_cb))
+ VDBG (0, "failed to add pthread cleanup function");
+ if (pthread_setspecific (vcl_worker_stop_key, &wrk->thread_id))
+ VDBG (0, "failed to setup key value");
+
+ clib_spinlock_unlock (&vcm->workers_lock);
+
+ VDBG (0, "added worker %u", wrk->wrk_index);
+ return 0;
+}
+
+svm_msg_q_t *
+vcl_worker_ctrl_mq (vcl_worker_t * wrk)
{
- return pool_elt_at_index (vcm->mq_evt_conns, mq_conn_idx);
+ return wrk->ctrl_mq;
}
int
-vcl_mq_epoll_add_evfd (svm_msg_q_t * mq)
+vcl_session_read_ready (vcl_session_t * s)
{
- struct epoll_event e = { 0 };
- vcl_mq_evt_conn_t *mqc;
- u32 mqc_index;
- int mq_fd;
+ if (PREDICT_FALSE (s->flags & VCL_SESSION_F_IS_VEP))
+ {
+ VDBG (0, "ERROR: session %u: cannot read from an epoll session!",
+ s->session_index);
+ return VPPCOM_EBADFD;
+ }
+
+ if (vcl_session_is_open (s))
+ {
+ if (vcl_session_is_ct (s))
+ return svm_fifo_max_dequeue_cons (s->ct_rx_fifo);
+
+ if (s->is_dgram)
+ {
+ session_dgram_pre_hdr_t ph;
+ u32 max_deq;
+
+ max_deq = svm_fifo_max_dequeue_cons (s->rx_fifo);
+ if (max_deq <= SESSION_CONN_HDR_LEN)
+ return 0;
+ if (svm_fifo_peek (s->rx_fifo, 0, sizeof (ph), (u8 *) & ph) < 0)
+ return 0;
+ if (ph.data_length + SESSION_CONN_HDR_LEN > max_deq)
+ return 0;
+
+ return ph.data_length;
+ }
+
+ return svm_fifo_max_dequeue_cons (s->rx_fifo);
+ }
+ else if (s->session_state == VCL_STATE_LISTEN)
+ {
+ return clib_fifo_elts (s->accept_evts_fifo);
+ }
+ else
+ {
+ return (s->session_state == VCL_STATE_DISCONNECT) ?
+ VPPCOM_ECONNRESET : VPPCOM_ENOTCONN;
+ }
+}
+
+int
+vcl_session_write_ready (vcl_session_t * s)
+{
+ if (PREDICT_FALSE (s->flags & VCL_SESSION_F_IS_VEP))
+ {
+ VDBG (0, "session %u [0x%llx]: cannot write to an epoll session!",
+ s->session_index, s->vpp_handle);
+ return VPPCOM_EBADFD;
+ }
+
+ if (vcl_session_is_open (s))
+ {
+ if (vcl_session_is_ct (s))
+ return svm_fifo_max_enqueue_prod (s->ct_tx_fifo);
- mq_fd = svm_msg_q_get_consumer_eventfd (mq);
+ if (s->is_dgram)
+ {
+ u32 max_enq = svm_fifo_max_enqueue_prod (s->tx_fifo);
- if (vcm->mqs_epfd < 0 || mq_fd == -1)
+ if (max_enq <= sizeof (session_dgram_hdr_t))
+ return 0;
+ return max_enq - sizeof (session_dgram_hdr_t);
+ }
+
+ return svm_fifo_max_enqueue_prod (s->tx_fifo);
+ }
+ else if (s->session_state == VCL_STATE_LISTEN)
+ {
+ if (s->tx_fifo)
+ return svm_fifo_max_enqueue_prod (s->tx_fifo);
+ else
+ return VPPCOM_EBADFD;
+ }
+ else
+ {
+ return (s->session_state == VCL_STATE_DISCONNECT) ?
+ VPPCOM_ECONNRESET : VPPCOM_ENOTCONN;
+ }
+}
+
+int
+vcl_session_alloc_ext_cfg (vcl_session_t *s,
+ transport_endpt_ext_cfg_type_t type, u32 len)
+{
+ if (s->ext_config)
return -1;
- mqc = vcl_mq_evt_conn_alloc ();
- mqc_index = vcl_mq_evt_conn_index (mqc);
- mqc->mq_fd = mq_fd;
- mqc->mq = mq;
+ s->ext_config = clib_mem_alloc (len);
+ clib_memset (s->ext_config, 0, len);
+ s->ext_config->len = len;
+ s->ext_config->type = type;
- e.events = EPOLLIN;
- e.data.u32 = mqc_index;
- if (epoll_ctl (vcm->mqs_epfd, EPOLL_CTL_ADD, mq_fd, &e) < 0)
+ return 0;
+}
+
+int
+vcl_segment_attach (u64 segment_handle, char *name, ssvm_segment_type_t type,
+ int fd)
+{
+ fifo_segment_create_args_t _a, *a = &_a;
+ int rv;
+
+ memset (a, 0, sizeof (*a));
+ a->segment_name = name;
+ a->segment_type = type;
+
+ if (type == SSVM_SEGMENT_MEMFD)
+ a->memfd_fd = fd;
+
+ clib_rwlock_writer_lock (&vcm->segment_table_lock);
+
+ if ((rv = fifo_segment_attach (&vcm->segment_main, a)))
+ {
+ clib_warning ("svm_fifo_segment_attach ('%s') failed", name);
+ return rv;
+ }
+ hash_set (vcm->segment_table, segment_handle, a->new_segment_indices[0]);
+
+ clib_rwlock_writer_unlock (&vcm->segment_table_lock);
+
+ vec_free (a->new_segment_indices);
+ return 0;
+}
+
+u32
+vcl_segment_table_lookup (u64 segment_handle)
+{
+ uword *seg_indexp;
+
+ clib_rwlock_reader_lock (&vcm->segment_table_lock);
+ seg_indexp = hash_get (vcm->segment_table, segment_handle);
+ clib_rwlock_reader_unlock (&vcm->segment_table_lock);
+
+ if (!seg_indexp)
+ return VCL_INVALID_SEGMENT_INDEX;
+ return ((u32) * seg_indexp);
+}
+
+void
+vcl_segment_detach (u64 segment_handle)
+{
+ fifo_segment_main_t *sm = &vcm->segment_main;
+ fifo_segment_t *segment;
+ u32 segment_index;
+
+ segment_index = vcl_segment_table_lookup (segment_handle);
+ if (segment_index == (u32) ~ 0)
+ return;
+
+ clib_rwlock_writer_lock (&vcm->segment_table_lock);
+
+ segment = fifo_segment_get_segment (sm, segment_index);
+ fifo_segment_delete (sm, segment);
+ hash_unset (vcm->segment_table, segment_handle);
+
+ clib_rwlock_writer_unlock (&vcm->segment_table_lock);
+
+ VDBG (0, "detached segment %u handle %u", segment_index, segment_handle);
+}
+
+int
+vcl_segment_attach_session (uword segment_handle, uword rxf_offset,
+ uword txf_offset, uword mq_offset, u8 is_ct,
+ vcl_session_t *s)
+{
+ u32 fs_index, eqs_index;
+ svm_fifo_t *rxf, *txf;
+ fifo_segment_t *fs;
+ u64 eqs_handle;
+
+ fs_index = vcl_segment_table_lookup (segment_handle);
+ if (fs_index == VCL_INVALID_SEGMENT_INDEX)
{
- clib_warning ("failed to add mq eventfd to mq epoll fd");
+ VDBG (0, "ERROR: segment for session %u is not mounted!",
+ s->session_index);
return -1;
}
- return mqc_index;
+ if (!is_ct && mq_offset != (uword) ~0)
+ {
+ eqs_handle = vcl_vpp_worker_segment_handle (0);
+ eqs_index = vcl_segment_table_lookup (eqs_handle);
+ ASSERT (eqs_index != VCL_INVALID_SEGMENT_INDEX);
+ }
+
+ clib_rwlock_reader_lock (&vcm->segment_table_lock);
+
+ fs = fifo_segment_get_segment (&vcm->segment_main, fs_index);
+ rxf = fifo_segment_alloc_fifo_w_offset (fs, rxf_offset);
+ txf = fifo_segment_alloc_fifo_w_offset (fs, txf_offset);
+ rxf->segment_index = fs_index;
+ txf->segment_index = fs_index;
+
+ if (!is_ct && mq_offset != (uword) ~0)
+ {
+ fs = fifo_segment_get_segment (&vcm->segment_main, eqs_index);
+ s->vpp_evt_q =
+ fifo_segment_msg_q_attach (fs, mq_offset, rxf->shr->slice_index);
+ }
+
+ clib_rwlock_reader_unlock (&vcm->segment_table_lock);
+
+ if (!is_ct)
+ {
+ rxf->shr->client_session_index = s->session_index;
+ txf->shr->client_session_index = s->session_index;
+ rxf->client_thread_index = vcl_get_worker_index ();
+ txf->client_thread_index = vcl_get_worker_index ();
+ s->rx_fifo = rxf;
+ s->tx_fifo = txf;
+ }
+ else
+ {
+ s->ct_rx_fifo = rxf;
+ s->ct_tx_fifo = txf;
+ }
+
+ return 0;
+}
+
+void
+vcl_session_detach_fifos (vcl_session_t *s)
+{
+ fifo_segment_t *fs;
+
+ if (!s->rx_fifo)
+ return;
+
+ clib_rwlock_reader_lock (&vcm->segment_table_lock);
+
+ fs = fifo_segment_get_segment_if_valid (&vcm->segment_main,
+ s->rx_fifo->segment_index);
+ if (!fs)
+ goto done;
+
+ fifo_segment_free_client_fifo (fs, s->rx_fifo);
+ fifo_segment_free_client_fifo (fs, s->tx_fifo);
+ if (s->ct_rx_fifo)
+ {
+ fs = fifo_segment_get_segment_if_valid (&vcm->segment_main,
+ s->ct_rx_fifo->segment_index);
+ if (!fs)
+ goto done;
+
+ fifo_segment_free_client_fifo (fs, s->ct_rx_fifo);
+ fifo_segment_free_client_fifo (fs, s->ct_tx_fifo);
+ }
+
+done:
+ clib_rwlock_reader_unlock (&vcm->segment_table_lock);
}
int
-vcl_mq_epoll_del_evfd (u32 mqc_index)
+vcl_segment_attach_mq (uword segment_handle, uword mq_offset, u32 mq_index,
+ svm_msg_q_t **mq)
{
- vcl_mq_evt_conn_t *mqc;
+ fifo_segment_t *fs;
+ u32 fs_index;
- if (vcm->mqs_epfd || mqc_index == ~0)
- return -1;
+ fs_index = vcl_segment_table_lookup (segment_handle);
+ if (fs_index == VCL_INVALID_SEGMENT_INDEX)
+ {
+ VDBG (0, "ERROR: mq segment %lx for is not attached!", segment_handle);
+ return -1;
+ }
+
+ clib_rwlock_reader_lock (&vcm->segment_table_lock);
- mqc = vcl_mq_evt_conn_get (mqc_index);
- if (epoll_ctl (vcm->mqs_epfd, EPOLL_CTL_DEL, mqc->mq_fd, 0) < 0)
+ fs = fifo_segment_get_segment (&vcm->segment_main, fs_index);
+ *mq = fifo_segment_msg_q_attach (fs, mq_offset, mq_index);
+
+ clib_rwlock_reader_unlock (&vcm->segment_table_lock);
+
+ return 0;
+}
+
+int
+vcl_segment_discover_mqs (uword segment_handle, int *fds, u32 n_fds)
+{
+ fifo_segment_t *fs;
+ u32 fs_index;
+
+ fs_index = vcl_segment_table_lookup (segment_handle);
+ if (fs_index == VCL_INVALID_SEGMENT_INDEX)
{
- clib_warning ("failed to del mq eventfd to mq epoll fd");
+ VDBG (0, "ERROR: mq segment %lx for is not attached!", segment_handle);
return -1;
}
+
+ clib_rwlock_reader_lock (&vcm->segment_table_lock);
+
+ fs = fifo_segment_get_segment (&vcm->segment_main, fs_index);
+ fifo_segment_msg_qs_discover (fs, fds, n_fds);
+
+ clib_rwlock_reader_unlock (&vcm->segment_table_lock);
+
return 0;
}
+svm_fifo_chunk_t *
+vcl_segment_alloc_chunk (uword segment_handle, u32 slice_index, u32 size,
+ uword *offset)
+{
+ svm_fifo_chunk_t *c;
+ fifo_segment_t *fs;
+ u32 fs_index;
+
+ fs_index = vcl_segment_table_lookup (segment_handle);
+ if (fs_index == VCL_INVALID_SEGMENT_INDEX)
+ {
+ VDBG (0, "ERROR: mq segment %lx for is not attached!", segment_handle);
+ return 0;
+ }
+
+ clib_rwlock_reader_lock (&vcm->segment_table_lock);
+
+ fs = fifo_segment_get_segment (&vcm->segment_main, fs_index);
+ c = fifo_segment_alloc_chunk_w_slice (fs, slice_index, size);
+ *offset = fifo_segment_chunk_offset (fs, c);
+
+ clib_rwlock_reader_unlock (&vcm->segment_table_lock);
+
+ return c;
+}
+
/*
* fd.io coding-style-patch-verification: ON
*
Code Review / vpp.git / blobdiff