summaryrefslogtreecommitdiffstats
path: root/drivers/net/ethernet/chelsio/cxgb4/smt.h
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/ethernet/chelsio/cxgb4/smt.h')
-rw-r--r--drivers/net/ethernet/chelsio/cxgb4/smt.h76
1 files changed, 76 insertions, 0 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/smt.h b/drivers/net/ethernet/chelsio/cxgb4/smt.h
new file mode 100644
index 000000000000..d6c2cc271398
--- /dev/null
+++ b/drivers/net/ethernet/chelsio/cxgb4/smt.h
@@ -0,0 +1,76 @@
+/*
+ * This file is part of the Chelsio T4/T5/T6 Ethernet driver for Linux.
+ *
+ * Copyright (c) 2017 Chelsio Communications, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - 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.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef __CXGB4_SMT_H
+#define __CXGB4_SMT_H
+
+#include <linux/spinlock.h>
+#include <linux/if_ether.h>
+#include <linux/atomic.h>
+
+struct adapter;
+struct cpl_smt_write_rpl;
+
+/* SMT related handling. Heavily adapted based on l2t ops in l2t.h/l2t.c
+ */
+enum {
+ SMT_STATE_SWITCHING,
+ SMT_STATE_UNUSED,
+ SMT_STATE_ERROR
+};
+
+enum {
+ SMT_SIZE = 256
+};
+
+struct smt_entry {
+ u16 state;
+ u16 idx;
+ u16 pfvf;
+ u8 src_mac[ETH_ALEN];
+ atomic_t refcnt;
+ spinlock_t lock; /* protect smt entry add,removal */
+};
+
+struct smt_data {
+ unsigned int smt_size;
+ rwlock_t lock;
+ struct smt_entry smtab[0];
+};
+
+struct smt_data *t4_init_smt(void);
+struct smt_entry *cxgb4_smt_alloc_switching(struct net_device *dev, u8 *smac);
+void cxgb4_smt_release(struct smt_entry *e);
+void do_smt_write_rpl(struct adapter *p, const struct cpl_smt_write_rpl *rpl);
+#endif /* __CXGB4_SMT_H */