-/*-
- * BSD LICENSE
+/* SPDX-License-Identifier: BSD-3-Clause
*
- * Copyright (c) 2016-2017 Solarflare Communications Inc.
+ * Copyright (c) 2016-2018 Solarflare Communications Inc.
* All rights reserved.
*
* This software was jointly developed between OKTET Labs (under contract
* for Solarflare) and Solarflare Communications, Inc.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* sysconf() */
#include <unistd.h>
#include <rte_errno.h>
+#include <rte_alarm.h>
#include "efx.h"
return efx_nic_set_drv_limits(sa->nic, &lim);
}
-int
-sfc_start(struct sfc_adapter *sa)
+static int
+sfc_try_start(struct sfc_adapter *sa)
{
+ const efx_nic_cfg_t *encp;
int rc;
sfc_log_init(sa, "entry");
SFC_ASSERT(sfc_adapter_is_locked(sa));
-
- switch (sa->state) {
- case SFC_ADAPTER_CONFIGURED:
- break;
- case SFC_ADAPTER_STARTED:
- sfc_info(sa, "already started");
- return 0;
- default:
- rc = EINVAL;
- goto fail_bad_state;
- }
-
- sa->state = SFC_ADAPTER_STARTING;
+ SFC_ASSERT(sa->state == SFC_ADAPTER_STARTING);
sfc_log_init(sa, "set resource limits");
rc = sfc_set_drv_limits(sa);
if (rc != 0)
goto fail_nic_init;
+ encp = efx_nic_cfg_get(sa->nic);
+ if (encp->enc_tunnel_encapsulations_supported != 0) {
+ sfc_log_init(sa, "apply tunnel config");
+ rc = efx_tunnel_reconfigure(sa->nic);
+ if (rc != 0)
+ goto fail_tunnel_reconfigure;
+ }
+
rc = sfc_intr_start(sa);
if (rc != 0)
goto fail_intr_start;
if (rc != 0)
goto fail_flows_insert;
- sa->state = SFC_ADAPTER_STARTED;
sfc_log_init(sa, "done");
return 0;
sfc_intr_stop(sa);
fail_intr_start:
+fail_tunnel_reconfigure:
efx_nic_fini(sa->nic);
fail_nic_init:
fail_set_drv_limits:
+ sfc_log_init(sa, "failed %d", rc);
+ return rc;
+}
+
+int
+sfc_start(struct sfc_adapter *sa)
+{
+ unsigned int start_tries = 3;
+ int rc;
+
+ sfc_log_init(sa, "entry");
+
+ SFC_ASSERT(sfc_adapter_is_locked(sa));
+
+ switch (sa->state) {
+ case SFC_ADAPTER_CONFIGURED:
+ break;
+ case SFC_ADAPTER_STARTED:
+ sfc_info(sa, "already started");
+ return 0;
+ default:
+ rc = EINVAL;
+ goto fail_bad_state;
+ }
+
+ sa->state = SFC_ADAPTER_STARTING;
+
+ do {
+ rc = sfc_try_start(sa);
+ } while ((--start_tries > 0) &&
+ (rc == EIO || rc == EAGAIN || rc == ENOENT || rc == EINVAL));
+
+ if (rc != 0)
+ goto fail_try_start;
+
+ sa->state = SFC_ADAPTER_STARTED;
+ sfc_log_init(sa, "done");
+ return 0;
+
+fail_try_start:
sa->state = SFC_ADAPTER_CONFIGURED;
fail_bad_state:
sfc_log_init(sa, "failed %d", rc);
sfc_log_init(sa, "done");
}
+static int
+sfc_restart(struct sfc_adapter *sa)
+{
+ int rc;
+
+ SFC_ASSERT(sfc_adapter_is_locked(sa));
+
+ if (sa->state != SFC_ADAPTER_STARTED)
+ return EINVAL;
+
+ sfc_stop(sa);
+
+ rc = sfc_start(sa);
+ if (rc != 0)
+ sfc_err(sa, "restart failed");
+
+ return rc;
+}
+
+static void
+sfc_restart_if_required(void *arg)
+{
+ struct sfc_adapter *sa = arg;
+
+ /* If restart is scheduled, clear the flag and do it */
+ if (rte_atomic32_cmpset((volatile uint32_t *)&sa->restart_required,
+ 1, 0)) {
+ sfc_adapter_lock(sa);
+ if (sa->state == SFC_ADAPTER_STARTED)
+ (void)sfc_restart(sa);
+ sfc_adapter_unlock(sa);
+ }
+}
+
+void
+sfc_schedule_restart(struct sfc_adapter *sa)
+{
+ int rc;
+
+ /* Schedule restart alarm if it is not scheduled yet */
+ if (!rte_atomic32_test_and_set(&sa->restart_required))
+ return;
+
+ rc = rte_eal_alarm_set(1, sfc_restart_if_required, sa);
+ if (rc == -ENOTSUP)
+ sfc_warn(sa, "alarms are not supported, restart is pending");
+ else if (rc != 0)
+ sfc_err(sa, "cannot arm restart alarm (rc=%d)", rc);
+ else
+ sfc_info(sa, "restart scheduled");
+}
+
int
sfc_configure(struct sfc_adapter *sa)
{
if (rc != 0)
goto fail_nic_reset;
+ /*
+ * Probed NIC is sufficient for tunnel init.
+ * Initialize tunnel support to be able to use libefx
+ * efx_tunnel_config_udp_{add,remove}() in any state and
+ * efx_tunnel_reconfigure() on start up.
+ */
+ rc = efx_tunnel_init(enp);
+ if (rc != 0)
+ goto fail_tunnel_init;
+
encp = efx_nic_cfg_get(sa->nic);
if (sa->dp_tx->features & SFC_DP_TX_FEAT_TSO) {
efx_nic_fini(sa->nic);
fail_estimate_rsrc_limits:
+fail_tunnel_init:
+ efx_tunnel_fini(sa->nic);
+
fail_nic_reset:
sfc_log_init(sa, "failed %d", rc);
sfc_port_detach(sa);
sfc_ev_detach(sa);
sfc_intr_detach(sa);
+ efx_tunnel_fini(sa->nic);
sa->state = SFC_ADAPTER_UNINITIALIZED;
}
SFC_ASSERT(sfc_adapter_is_locked(sa));
sa->socket_id = rte_socket_id();
+ rte_atomic32_init(&sa->restart_required);
sfc_log_init(sa, "init mem bar");
rc = sfc_mem_bar_init(sa);
sfc_mcdi_fini(sa);
+ /*
+ * Make sure there is no pending alarm to restart since we are
+ * going to free device private which is passed as the callback
+ * opaque data. A new alarm cannot be scheduled since MCDI is
+ * shut down.
+ */
+ rte_eal_alarm_cancel(sfc_restart_if_required, sa);
+
sfc_log_init(sa, "destroy nic");
sa->nic = NULL;
efx_nic_destroy(enp);
Code Review / deb_dpdk.git / blobdiff