1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2018 Chelsio Communications. 3 * All rights reserved. 4 */ 5 6 #ifndef _CXGBE_MPSTCAM_H_ 7 #define _CXGBE_MPSTCAM_H_ 8 9 #include "base/common.h" 10 11 enum { 12 MPS_ENTRY_UNUSED, /* Keep this first so memset 0 renders 13 * the correct state. Other states can 14 * be added in future like MPS_ENTRY_BUSY 15 * to reduce contention while mboxing 16 * the request to f/w or to denote attributes 17 * for a specific entry 18 */ 19 MPS_ENTRY_USED, 20 }; 21 22 struct mps_tcam_entry { 23 u8 state; 24 u16 idx; 25 26 /* add data here which uniquely defines an entry */ 27 u8 eth_addr[RTE_ETHER_ADDR_LEN]; 28 u8 mask[RTE_ETHER_ADDR_LEN]; 29 30 struct mpstcam_table *mpstcam; /* backptr */ 31 rte_atomic32_t refcnt; 32 }; 33 34 struct mpstcam_table { 35 u16 size; 36 rte_rwlock_t lock; 37 u16 free_idx; /* next free index */ 38 bool full; /* since free index can be present 39 * anywhere in the table, size and 40 * free_idx cannot alone determine 41 * if the table is full 42 */ 43 struct mps_tcam_entry entry[0]; 44 }; 45 46 struct mpstcam_table *t4_init_mpstcam(struct adapter *adap); 47 void t4_cleanup_mpstcam(struct adapter *adap); 48 int cxgbe_mpstcam_alloc(struct port_info *pi, const u8 *mac, const u8 *mask); 49 int cxgbe_mpstcam_remove(struct port_info *pi, u16 idx); 50 int cxgbe_mpstcam_modify(struct port_info *pi, int idx, const u8 *addr); 51 52 #endif /* _CXGBE_MPSTCAM_H_ */ 53