Imported Upstream version 17.05

[deb_dpdk.git] / drivers / net / sfc / sfc_dp.c

diff --git a/drivers/net/sfc/sfc_dp.c b/drivers/net/sfc/sfc_dp.c
new file mode 100644 (file)
index 0000000..860aa92
--- /dev/null
+++ b/drivers/net/sfc/sfc_dp.c
@@ -0,0 +1,100 @@
+/*-
+ *   BSD LICENSE
+ *
+ * Copyright (c) 2017 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.
+ */
+
+#include <sys/queue.h>
+#include <string.h>
+#include <errno.h>
+
+#include <rte_log.h>
+
+#include "sfc_dp.h"
+
+void
+sfc_dp_queue_init(struct sfc_dp_queue *dpq, uint16_t port_id, uint16_t queue_id,
+                 const struct rte_pci_addr *pci_addr)
+{
+       dpq->port_id = port_id;
+       dpq->queue_id = queue_id;
+       dpq->pci_addr = *pci_addr;
+}
+
+struct sfc_dp *
+sfc_dp_find_by_name(struct sfc_dp_list *head, enum sfc_dp_type type,
+                   const char *name)
+{
+       struct sfc_dp *entry;
+
+       TAILQ_FOREACH(entry, head, links) {
+               if (entry->type != type)
+                       continue;
+
+               if (strcmp(entry->name, name) == 0)
+                       return entry;
+       }
+
+       return NULL;
+}
+
+struct sfc_dp *
+sfc_dp_find_by_caps(struct sfc_dp_list *head, enum sfc_dp_type type,
+                   unsigned int avail_caps)
+{
+       struct sfc_dp *entry;
+
+       TAILQ_FOREACH(entry, head, links) {
+               if (entry->type != type)
+                       continue;
+
+               /* Take the first matching */
+               if (sfc_dp_match_hw_fw_caps(entry, avail_caps))
+                       return entry;
+       }
+
+       return NULL;
+}
+
+int
+sfc_dp_register(struct sfc_dp_list *head, struct sfc_dp *entry)
+{
+       if (sfc_dp_find_by_name(head, entry->type, entry->name) != NULL) {
+               rte_log(RTE_LOG_ERR, RTE_LOGTYPE_PMD,
+                       "sfc %s dapapath '%s' already registered\n",
+                       entry->type == SFC_DP_RX ? "Rx" :
+                       entry->type == SFC_DP_TX ? "Tx" :
+                       "unknown",
+                       entry->name);
+               return EEXIST;
+       }
+
+       TAILQ_INSERT_TAIL(head, entry, links);
+
+       return 0;
+}