sfc: create header for mcdi filtering code

Moved structs, enums, and added function prototypes.

The affected functions are no longer static.
Signed-off-by: Alexandru-Mihai Maftei <amaftei@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/sfc/mcdi_filters.h

+/* 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;
+
+	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 */
+	bool vlan_filter;
+	struct list_head vlan_list;
+};
+
+int efx_mcdi_filter_table_probe(struct efx_nic *efx);
+void efx_mcdi_filter_table_remove(struct efx_nic *efx);
+void efx_mcdi_filter_table_restore(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 *ctx,
+					const u32 *rx_indir_table,
+					const u8 *key);
+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_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);
+int efx_mcdi_get_rss_context_flags(struct efx_nic *efx, u32 context,
+				   u32 *flags);
+void efx_mcdi_set_rss_context_flags(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