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Diffstat (limited to 'drivers/net/cxgbe/l2t.h')
-rw-r--r--drivers/net/cxgbe/l2t.h57
1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/net/cxgbe/l2t.h b/drivers/net/cxgbe/l2t.h
new file mode 100644
index 00000000..22a34e38
--- /dev/null
+++ b/drivers/net/cxgbe/l2t.h
@@ -0,0 +1,57 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Chelsio Communications.
+ * All rights reserved.
+ */
+#ifndef _CXGBE_L2T_H_
+#define _CXGBE_L2T_H_
+
+#include "t4_msg.h"
+
+enum {
+ L2T_SIZE = 4096 /* # of L2T entries */
+};
+
+enum {
+ L2T_STATE_VALID, /* entry is up to date */
+ L2T_STATE_SYNC_WRITE, /* synchronous write of entry underway */
+
+ /* when state is one of the below the entry is not hashed */
+ L2T_STATE_SWITCHING, /* entry is being used by a switching filter */
+ L2T_STATE_UNUSED /* entry not in use */
+};
+
+/*
+ * State for the corresponding entry of the HW L2 table.
+ */
+struct l2t_entry {
+ u16 state; /* entry state */
+ u16 idx; /* entry index within in-memory table */
+ u16 vlan; /* VLAN TCI (id: bits 0-11, prio: 13-15 */
+ u8 lport; /* destination port */
+ u8 dmac[ETHER_ADDR_LEN]; /* destination MAC address */
+ rte_spinlock_t lock; /* entry lock */
+ rte_atomic32_t refcnt; /* entry reference count */
+};
+
+struct l2t_data {
+ unsigned int l2t_start; /* start index of our piece of the L2T */
+ unsigned int l2t_size; /* number of entries in l2tab */
+ rte_rwlock_t lock; /* table rw lock */
+ struct l2t_entry l2tab[0]; /* MUST BE LAST */
+};
+
+#define L2T_LPBK true
+#define L2T_ARPMISS true
+
+/* identifies sync vs async L2T_WRITE_REQs */
+#define S_SYNC_WR 12
+#define V_SYNC_WR(x) ((x) << S_SYNC_WR)
+#define F_SYNC_WR V_SYNC_WR(1)
+
+struct l2t_data *t4_init_l2t(unsigned int l2t_start, unsigned int l2t_end);
+void t4_cleanup_l2t(struct adapter *adap);
+struct l2t_entry *cxgbe_l2t_alloc_switching(struct rte_eth_dev *dev, u16 vlan,
+ u8 port, u8 *dmac);
+void cxgbe_l2t_release(struct l2t_entry *e);
+void do_l2t_write_rpl(struct adapter *p, const struct cpl_l2t_write_rpl *rpl);
+#endif /* _CXGBE_L2T_H_ */