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