X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=drivers%2Fnet%2Fsfc%2Fsfc.c;h=ac5fdcaa5902e0472fa3d01f6a2de6bb739a4fbf;hb=5c1c935890257c670084ff3991597b694b3f50a9;hp=0dcfdd800a9ceca0d7792f42b3ea4d51a0041da8;hpb=e77f9f1906cb105bb5988d0ec9fc28aa30eff5fc;p=dpdk.git

diff --git a/drivers/net/sfc/sfc.c b/drivers/net/sfc/sfc.c
index 0dcfdd800a..ac5fdcaa59 100644
--- a/drivers/net/sfc/sfc.c
+++ b/drivers/net/sfc/sfc.c
@@ -1,32 +1,10 @@
-/*-
- *   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() */
@@ -271,27 +249,16 @@ sfc_set_drv_limits(struct sfc_adapter *sa)
 	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);
@@ -303,6 +270,14 @@ sfc_start(struct sfc_adapter *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;
@@ -327,7 +302,6 @@ sfc_start(struct sfc_adapter *sa)
 	if (rc != 0)
 		goto fail_flows_insert;
 
-	sa->state = SFC_ADAPTER_STARTED;
 	sfc_log_init(sa, "done");
 	return 0;
 
@@ -347,10 +321,51 @@ fail_ev_start:
 	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);
@@ -636,6 +651,16 @@ sfc_attach(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) {
@@ -697,6 +722,9 @@ fail_intr_attach:
 	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);
@@ -716,6 +744,7 @@ sfc_detach(struct sfc_adapter *sa)
 	sfc_port_detach(sa);
 	sfc_ev_detach(sa);
 	sfc_intr_detach(sa);
+	efx_tunnel_fini(sa->nic);
 
 	sa->state = SFC_ADAPTER_UNINITIALIZED;
 }