/* SPDX-License-Identifier: GPL-2.0-only */
/****************************************************************************
* Driver for Solarflare network controllers and boards
* Copyright 2019 Solarflare Communications Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation, incorporated herein by reference.
*/
#ifndef EFX_MCDI_FILTERS_H
#define EFX_MCDI_FILTERS_H
#include "net_driver.h"
#include "filter.h"
#include "mcdi_pcol.h"
#define EFX_EF10_FILTER_DEV_UC_MAX 32
#define EFX_EF10_FILTER_DEV_MC_MAX 256
enum efx_mcdi_filter_default_filters {
EFX_EF10_BCAST,
EFX_EF10_UCDEF,
EFX_EF10_MCDEF,
EFX_EF10_VXLAN4_UCDEF,
EFX_EF10_VXLAN4_MCDEF,
EFX_EF10_VXLAN6_UCDEF,
EFX_EF10_VXLAN6_MCDEF,
EFX_EF10_NVGRE4_UCDEF,
EFX_EF10_NVGRE4_MCDEF,
EFX_EF10_NVGRE6_UCDEF,
EFX_EF10_NVGRE6_MCDEF,
EFX_EF10_GENEVE4_UCDEF,
EFX_EF10_GENEVE4_MCDEF,
EFX_EF10_GENEVE6_UCDEF,
EFX_EF10_GENEVE6_MCDEF,
EFX_EF10_NUM_DEFAULT_FILTERS
};
/* Per-VLAN filters information */
struct efx_mcdi_filter_vlan {
struct list_head list;
u16 vid;
u16 uc[EFX_EF10_FILTER_DEV_UC_MAX];
u16 mc[EFX_EF10_FILTER_DEV_MC_MAX];
u16 default_filters[EFX_EF10_NUM_DEFAULT_FILTERS];
};
struct efx_mcdi_dev_addr {
u8 addr[ETH_ALEN];
};
struct efx_mcdi_filter_table {
/* The MCDI match masks supported by this fw & hw, in order of priority */
u32 rx_match_mcdi_flags[
MC_CMD_GET_PARSER_DISP_INFO_OUT_SUPPORTED_MATCHES_MAXNUM * 2];
unsigned int rx_match_count;
/* Our RSS context is exclusive (as opposed to shared) */
bool rx_rss_context_exclusive;
struct rw_semaphore lock; /* Protects entries */
struct {
unsigned long spec; /* pointer to spec plus flag bits */
/* AUTO_OLD is used to mark and sweep MAC filters for the device address lists. */
/* unused flag 1UL */
#define EFX_EF10_FILTER_FLAG_AUTO_OLD 2UL
#define EFX_EF10_FILTER_FLAGS 3UL
u64 handle; /* firmware handle */
} *entry;
/* Shadow of net_device address lists, guarded by mac_lock */
struct efx_mcdi_dev_addr dev_uc_list[EFX_EF10_FILTER_DEV_UC_MAX];
struct efx_mcdi_dev_addr dev_mc_list[EFX_EF10_FILTER_DEV_MC_MAX];
int dev_uc_count;
int dev_mc_count;
bool uc_promisc;
bool mc_promisc;
/* Whether in multicast promiscuous mode when last changed */
bool mc_promisc_last;
bool mc_overflow; /* Too many MC addrs; should always imply mc_promisc */
/* RSS contexts have yet to be restored after MC reboot */
bool must_restore_rss_contexts;
/* filters have yet to be restored after MC reboot */
bool must_restore_filters;
/* Multicast filter chaining allows less-specific filters to receive
* multicast packets that matched more-specific filters. Early EF10
* firmware didn't support this (SF bug 26807); if mc_chaining == false
* then we still subscribe the dev_mc_list even when mc_promisc to
* prevent another VI stealing the traffic.
*/
bool mc_chaining;
bool vlan_filter;
/* Entries on the vlan_list are added/removed under filter_sem */
struct list_head vlan_list;
};
int efx_mcdi_filter_table_probe(struct efx_nic *efx, bool multicast_chaining);
void efx_mcdi_filter_table_down(struct efx_nic *efx);
void efx_mcdi_filter_table_remove(struct efx_nic *efx);
void efx_mcdi_filter_table_restore(struct efx_nic *efx);
void efx_mcdi_filter_table_reset_mc_allocations(struct efx_nic *efx);
/*
* The filter table(s) are managed by firmware and we have write-only
* access. When removing filters we must identify them to the
* firmware by a 64-bit handle, but this is too wide for Linux kernel
* interfaces (32-bit for RX NFC, 16-bit for RFS). Also, we need to
* be able to tell in advance whether a requested insertion will
* replace an existing filter. Therefore we maintain a software hash
* table, which should be at least as large as the hardware hash
* table.
*
* Huntington has a single 8K filter table shared between all filter
* types and both ports.
*/
#define EFX_MCDI_FILTER_TBL_ROWS 8192
bool efx_mcdi_filter_match_supported(struct efx_mcdi_filter_table *table,
bool encap,
enum efx_filter_match_flags match_flags);
void efx_mcdi_filter_sync_rx_mode(struct efx_nic *efx);
s32 efx_mcdi_filter_insert(struct efx_nic *efx, struct efx_filter_spec *spec,
bool replace_equal);
int efx_mcdi_filter_remove_safe(struct efx_nic *efx,
enum efx_filter_priority priority,
u32 filter_id);
int efx_mcdi_filter_get_safe(struct efx_nic *efx,
enum efx_filter_priority priority,
u32 filter_id, struct efx_filter_spec *spec);
u32 efx_mcdi_filter_count_rx_used(struct efx_nic *efx,
enum efx_filter_priority priority);
int efx_mcdi_filter_clear_rx(struct efx_nic *efx,
enum efx_filter_priority priority);
u32 efx_mcdi_filter_get_rx_id_limit(struct efx_nic *efx);
s32 efx_mcdi_filter_get_rx_ids(struct efx_nic *efx,
enum efx_filter_priority priority,
u32 *buf, u32 size);
void efx_mcdi_filter_cleanup_vlans(struct efx_nic *efx);
int efx_mcdi_filter_add_vlan(struct efx_nic *efx, u16 vid);
struct efx_mcdi_filter_vlan *efx_mcdi_filter_find_vlan(struct efx_nic *efx, u16 vid);
void efx_mcdi_filter_del_vlan(struct efx_nic *efx, u16 vid);
void efx_mcdi_rx_free_indir_table(struct efx_nic *efx);
int efx_mcdi_rx_push_rss_context_config(struct efx_nic *efx,
struct efx_rss_context_priv *ctx,
const u32 *rx_indir_table,
const u8 *key, bool delete);
int efx_mcdi_pf_rx_push_rss_config(struct efx_nic *efx, bool user,
const u32 *rx_indir_table,
const u8 *key);
int efx_mcdi_vf_rx_push_rss_config(struct efx_nic *efx, bool user,
const u32 *rx_indir_table
__attribute__ ((unused)),
const u8 *key
__attribute__ ((unused)));
int efx_mcdi_push_default_indir_table(struct efx_nic *efx,
unsigned int rss_spread);
int efx_mcdi_rx_pull_rss_config(struct efx_nic *efx);
int efx_mcdi_rx_pull_rss_context_config(struct efx_nic *efx,
struct efx_rss_context *ctx);
void efx_mcdi_rx_restore_rss_contexts(struct efx_nic *efx);
static inline void efx_mcdi_update_rx_scatter(struct efx_nic *efx)
{
/* no need to do anything here */
}
bool efx_mcdi_filter_rfs_expire_one(struct efx_nic *efx, u32 flow_id,
unsigned int filter_idx);
#endif
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