/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) Meta Platforms, Inc. and affiliates. */
#ifndef _FBNIC_RPC_H_
#define _FBNIC_RPC_H_
#include <uapi/linux/in6.h>
#include <linux/bitfield.h>
/* The TCAM state definitions follow an expected ordering.
* They start out disabled, then move through the following states:
* Disabled 0 -> Add 2
* Add 2 -> Valid 1
*
* Valid 1 -> Add/Update 2
* Add 2 -> Valid 1
*
* Valid 1 -> Delete 3
* Delete 3 -> Disabled 0
*/
enum {
FBNIC_TCAM_S_DISABLED = 0,
FBNIC_TCAM_S_VALID = 1,
FBNIC_TCAM_S_ADD = 2,
FBNIC_TCAM_S_UPDATE = FBNIC_TCAM_S_ADD,
FBNIC_TCAM_S_DELETE = 3,
};
/* 32 MAC Destination Address TCAM Entries
* 4 registers DA[1:0], DA[3:2], DA[5:4], Validate
*/
#define FBNIC_RPC_TCAM_MACDA_WORD_LEN 3
#define FBNIC_RPC_TCAM_MACDA_NUM_ENTRIES 32
#define FBNIC_RPC_TCAM_ACT_WORD_LEN 11
#define FBNIC_RPC_TCAM_ACT_NUM_ENTRIES 64
struct fbnic_mac_addr {
union {
unsigned char addr8[ETH_ALEN];
__be16 addr16[FBNIC_RPC_TCAM_MACDA_WORD_LEN];
} mask, value;
unsigned char state;
DECLARE_BITMAP(act_tcam, FBNIC_RPC_TCAM_ACT_NUM_ENTRIES);
};
struct fbnic_act_tcam {
struct {
u16 tcam[FBNIC_RPC_TCAM_ACT_WORD_LEN];
} mask, value;
unsigned char state;
u16 rss_en_mask;
u32 dest;
};
enum {
FBNIC_RSS_EN_HOST_UDP6,
FBNIC_RSS_EN_HOST_UDP4,
FBNIC_RSS_EN_HOST_TCP6,
FBNIC_RSS_EN_HOST_TCP4,
FBNIC_RSS_EN_HOST_IP6,
FBNIC_RSS_EN_HOST_IP4,
FBNIC_RSS_EN_HOST_ETHER,
FBNIC_RSS_EN_XCAST_UDP6,
#define FBNIC_RSS_EN_NUM_UNICAST FBNIC_RSS_EN_XCAST_UDP6
FBNIC_RSS_EN_XCAST_UDP4,
FBNIC_RSS_EN_XCAST_TCP6,
FBNIC_RSS_EN_XCAST_TCP4,
FBNIC_RSS_EN_XCAST_IP6,
FBNIC_RSS_EN_XCAST_IP4,
FBNIC_RSS_EN_XCAST_ETHER,
FBNIC_RSS_EN_NUM_ENTRIES
};
/* Reserve the first 2 entries for the use by the BMC so that we can
* avoid allowing rules to get in the way of BMC unicast traffic.
*/
#define FBNIC_RPC_ACT_TBL_BMC_OFFSET 0
#define FBNIC_RPC_ACT_TBL_BMC_ALL_MULTI_OFFSET 1
/* We reserve the last 14 entries for RSS rules on the host. The BMC
* unicast rule will need to be populated above these and is expected to
* use MACDA TCAM entry 23 to store the BMC MAC address.
*/
#define FBNIC_RPC_ACT_TBL_RSS_OFFSET \
(FBNIC_RPC_ACT_TBL_NUM_ENTRIES - FBNIC_RSS_EN_NUM_ENTRIES)
/* Flags used to identify the owner for this MAC filter. Note that any
* flags set for Broadcast thru Promisc indicate that the rule belongs
* to the RSS filters for the host.
*/
enum {
FBNIC_MAC_ADDR_T_BMC = 0,
FBNIC_MAC_ADDR_T_BROADCAST = FBNIC_RPC_ACT_TBL_RSS_OFFSET,
#define FBNIC_MAC_ADDR_T_HOST_START FBNIC_MAC_ADDR_T_BROADCAST
FBNIC_MAC_ADDR_T_MULTICAST,
FBNIC_MAC_ADDR_T_UNICAST,
FBNIC_MAC_ADDR_T_ALLMULTI, /* BROADCAST ... MULTICAST*/
FBNIC_MAC_ADDR_T_PROMISC, /* BROADCAST ... UNICAST */
FBNIC_MAC_ADDR_T_HOST_LAST
};
#define FBNIC_MAC_ADDR_T_HOST_LEN \
(FBNIC_MAC_ADDR_T_HOST_LAST - FBNIC_MAC_ADDR_T_HOST_START)
#define FBNIC_RPC_TCAM_ACT0_IPSRC_IDX CSR_GENMASK(2, 0)
#define FBNIC_RPC_TCAM_ACT0_IPSRC_VALID CSR_BIT(3)
#define FBNIC_RPC_TCAM_ACT0_IPDST_IDX CSR_GENMASK(6, 4)
#define FBNIC_RPC_TCAM_ACT0_IPDST_VALID CSR_BIT(7)
#define FBNIC_RPC_TCAM_ACT0_OUTER_IPSRC_IDX CSR_GENMASK(10, 8)
#define FBNIC_RPC_TCAM_ACT0_OUTER_IPSRC_VALID CSR_BIT(11)
#define FBNIC_RPC_TCAM_ACT0_OUTER_IPDST_IDX CSR_GENMASK(14, 12)
#define FBNIC_RPC_TCAM_ACT0_OUTER_IPDST_VALID CSR_BIT(15)
#define FBNIC_RPC_TCAM_ACT1_L2_MACDA_IDX CSR_GENMASK(9, 5)
#define FBNIC_RPC_TCAM_ACT1_L2_MACDA_VALID CSR_BIT(10)
#define FBNIC_RPC_TCAM_ACT1_IP_IS_V6 CSR_BIT(11)
#define FBNIC_RPC_TCAM_ACT1_IP_VALID CSR_BIT(12)
#define FBNIC_RPC_TCAM_ACT1_OUTER_IP_VALID CSR_BIT(13)
#define FBNIC_RPC_TCAM_ACT1_L4_IS_UDP CSR_BIT(14)
#define FBNIC_RPC_TCAM_ACT1_L4_VALID CSR_BIT(15)
/* TCAM 0 - 3 reserved for BMC MAC addresses */
#define FBNIC_RPC_TCAM_MACDA_BMC_ADDR_IDX 0
/* TCAM 4 reserved for broadcast MAC address */
#define FBNIC_RPC_TCAM_MACDA_BROADCAST_IDX 4
/* TCAMs 5 - 30 will be used for multicast and unicast addresses. The
* boundary between the two can be variable it is currently set to 24
* on which the unicast addresses start. The general idea is that we will
* always go top-down with unicast, and bottom-up with multicast so that
* there should be free-space in the middle between the two.
*
* The entry at MADCA_DEFAULT_BOUNDARY is a special case as it can be used
* for the ALL MULTI address if the list is full, or the BMC has requested
* it.
*/
#define FBNIC_RPC_TCAM_MACDA_MULTICAST_IDX 5
#define FBNIC_RPC_TCAM_MACDA_DEFAULT_BOUNDARY 24
#define FBNIC_RPC_TCAM_MACDA_HOST_ADDR_IDX 30
/* Reserved for use to record Multicast promisc, or Promiscuous */
#define FBNIC_RPC_TCAM_MACDA_PROMISC_IDX 31
enum {
FBNIC_UDP6_HASH_OPT,
FBNIC_UDP4_HASH_OPT,
FBNIC_TCP6_HASH_OPT,
FBNIC_TCP4_HASH_OPT,
#define FBNIC_L4_HASH_OPT FBNIC_TCP4_HASH_OPT
FBNIC_IPV6_HASH_OPT,
FBNIC_IPV4_HASH_OPT,
#define FBNIC_IP_HASH_OPT FBNIC_IPV4_HASH_OPT
FBNIC_ETHER_HASH_OPT,
FBNIC_NUM_HASH_OPT,
};
struct fbnic_dev;
struct fbnic_net;
void fbnic_bmc_rpc_init(struct fbnic_dev *fbd);
void fbnic_bmc_rpc_all_multi_config(struct fbnic_dev *fbd, bool enable_host);
void fbnic_reset_indir_tbl(struct fbnic_net *fbn);
void fbnic_rss_key_fill(u32 *buffer);
void fbnic_rss_init_en_mask(struct fbnic_net *fbn);
void fbnic_rss_disable_hw(struct fbnic_dev *fbd);
void fbnic_rss_reinit_hw(struct fbnic_dev *fbd, struct fbnic_net *fbn);
void fbnic_rss_reinit(struct fbnic_dev *fbd, struct fbnic_net *fbn);
int __fbnic_xc_unsync(struct fbnic_mac_addr *mac_addr, unsigned int tcam_idx);
struct fbnic_mac_addr *__fbnic_uc_sync(struct fbnic_dev *fbd,
const unsigned char *addr);
struct fbnic_mac_addr *__fbnic_mc_sync(struct fbnic_dev *fbd,
const unsigned char *addr);
void fbnic_sift_macda(struct fbnic_dev *fbd);
void fbnic_write_macda(struct fbnic_dev *fbd);
static inline int __fbnic_uc_unsync(struct fbnic_mac_addr *mac_addr)
{
return __fbnic_xc_unsync(mac_addr, FBNIC_MAC_ADDR_T_UNICAST);
}
static inline int __fbnic_mc_unsync(struct fbnic_mac_addr *mac_addr)
{
return __fbnic_xc_unsync(mac_addr, FBNIC_MAC_ADDR_T_MULTICAST);
}
void fbnic_clear_rules(struct fbnic_dev *fbd);
void fbnic_write_rules(struct fbnic_dev *fbd);
#endif /* _FBNIC_RPC_H_ */
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