diff --git a/drivers/net/ethernet/sfc/Makefile b/drivers/net/ethernet/sfc/Makefile
index ef7410f..a612726 100644
--- a/drivers/net/ethernet/sfc/Makefile
+++ b/drivers/net/ethernet/sfc/Makefile
@@ -1,5 +1,4 @@
 sfc-y			+= efx.o nic.o farch.o falcon.o siena.o tx.o rx.o \
-			   filter.o \
 			   selftest.o ethtool.o qt202x_phy.o mdio_10g.o \
 			   tenxpress.o txc43128_phy.o falcon_boards.o \
 			   mcdi.o mcdi_port.o mcdi_mon.o ptp.o
diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index 49d06ca..a2daaae 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -611,7 +611,7 @@ static void efx_start_datapath(struct efx_nic *efx)
 
 	/* RX filters also have scatter-enabled flags */
 	if (efx->rx_scatter != old_rx_scatter)
-		efx_filter_update_rx_scatter(efx);
+		efx->type->filter_update_rx_scatter(efx);
 
 	/* We must keep at least one descriptor in a TX ring empty.
 	 * We could avoid this when the queue size does not exactly
@@ -1499,6 +1499,44 @@ static void efx_remove_nic(struct efx_nic *efx)
 	efx->type->remove(efx);
 }
 
+static int efx_probe_filters(struct efx_nic *efx)
+{
+	int rc;
+
+	spin_lock_init(&efx->filter_lock);
+
+	rc = efx->type->filter_table_probe(efx);
+	if (rc)
+		return rc;
+
+#ifdef CONFIG_RFS_ACCEL
+	if (efx->type->offload_features & NETIF_F_NTUPLE) {
+		efx->rps_flow_id = kcalloc(efx->type->max_rx_ip_filters,
+					   sizeof(*efx->rps_flow_id),
+					   GFP_KERNEL);
+		if (!efx->rps_flow_id) {
+			efx->type->filter_table_remove(efx);
+			return -ENOMEM;
+		}
+	}
+#endif
+
+	return 0;
+}
+
+static void efx_remove_filters(struct efx_nic *efx)
+{
+#ifdef CONFIG_RFS_ACCEL
+	kfree(efx->rps_flow_id);
+#endif
+	efx->type->filter_table_remove(efx);
+}
+
+static void efx_restore_filters(struct efx_nic *efx)
+{
+	efx->type->filter_table_restore(efx);
+}
+
 /**************************************************************************
  *
  * NIC startup/shutdown
diff --git a/drivers/net/ethernet/sfc/efx.h b/drivers/net/ethernet/sfc/efx.h
index 45de5b9..9e35738 100644
--- a/drivers/net/ethernet/sfc/efx.h
+++ b/drivers/net/ethernet/sfc/efx.h
@@ -68,27 +68,92 @@ extern void efx_schedule_slow_fill(struct efx_rx_queue *rx_queue);
 #define EFX_TXQ_MIN_ENT(efx)	(2 * efx_tx_max_skb_descs(efx))
 
 /* Filters */
-extern int efx_probe_filters(struct efx_nic *efx);
-extern void efx_restore_filters(struct efx_nic *efx);
-extern void efx_remove_filters(struct efx_nic *efx);
-extern void efx_filter_update_rx_scatter(struct efx_nic *efx);
-extern s32 efx_filter_insert_filter(struct efx_nic *efx,
-				    struct efx_filter_spec *spec,
-				    bool replace);
-extern int efx_filter_remove_id_safe(struct efx_nic *efx,
-				     enum efx_filter_priority priority,
-				     u32 filter_id);
-extern int efx_filter_get_filter_safe(struct efx_nic *efx,
-				      enum efx_filter_priority priority,
-				      u32 filter_id, struct efx_filter_spec *);
-extern void efx_filter_clear_rx(struct efx_nic *efx,
-				enum efx_filter_priority priority);
-extern u32 efx_filter_count_rx_used(struct efx_nic *efx,
-				    enum efx_filter_priority priority);
-extern u32 efx_filter_get_rx_id_limit(struct efx_nic *efx);
-extern s32 efx_filter_get_rx_ids(struct efx_nic *efx,
-				 enum efx_filter_priority priority,
-				 u32 *buf, u32 size);
+
+/**
+ * efx_filter_insert_filter - add or replace a filter
+ * @efx: NIC in which to insert the filter
+ * @spec: Specification for the filter
+ * @replace_equal: Flag for whether the specified filter may replace an
+ *	existing filter with equal priority
+ *
+ * On success, return the filter ID.
+ * On failure, return a negative error code.
+ *
+ * If an existing filter has equal match values to the new filter
+ * spec, then the new filter might replace it, depending on the
+ * relative priorities.  If the existing filter has lower priority, or
+ * if @replace_equal is set and it has equal priority, then it is
+ * replaced.  Otherwise the function fails, returning -%EPERM if
+ * the existing filter has higher priority or -%EEXIST if it has
+ * equal priority.
+ */
+static inline s32 efx_filter_insert_filter(struct efx_nic *efx,
+					   struct efx_filter_spec *spec,
+					   bool replace_equal)
+{
+	return efx->type->filter_insert(efx, spec, replace_equal);
+}
+
+/**
+ * efx_filter_remove_id_safe - remove a filter by ID, carefully
+ * @efx: NIC from which to remove the filter
+ * @priority: Priority of filter, as passed to @efx_filter_insert_filter
+ * @filter_id: ID of filter, as returned by @efx_filter_insert_filter
+ *
+ * This function will range-check @filter_id, so it is safe to call
+ * with a value passed from userland.
+ */
+static inline int efx_filter_remove_id_safe(struct efx_nic *efx,
+					    enum efx_filter_priority priority,
+					    u32 filter_id)
+{
+	return efx->type->filter_remove_safe(efx, priority, filter_id);
+}
+
+/**
+ * efx_filter_get_filter_safe - retrieve a filter by ID, carefully
+ * @efx: NIC from which to remove the filter
+ * @priority: Priority of filter, as passed to @efx_filter_insert_filter
+ * @filter_id: ID of filter, as returned by @efx_filter_insert_filter
+ * @spec: Buffer in which to store filter specification
+ *
+ * This function will range-check @filter_id, so it is safe to call
+ * with a value passed from userland.
+ */
+static inline int
+efx_filter_get_filter_safe(struct efx_nic *efx,
+			   enum efx_filter_priority priority,
+			   u32 filter_id, struct efx_filter_spec *spec)
+{
+	return efx->type->filter_get_safe(efx, priority, filter_id, spec);
+}
+
+/**
+ * efx_farch_filter_clear_rx - remove RX filters by priority
+ * @efx: NIC from which to remove the filters
+ * @priority: Maximum priority to remove
+ */
+static inline void efx_filter_clear_rx(struct efx_nic *efx,
+				       enum efx_filter_priority priority)
+{
+	return efx->type->filter_clear_rx(efx, priority);
+}
+
+static inline u32 efx_filter_count_rx_used(struct efx_nic *efx,
+					   enum efx_filter_priority priority)
+{
+	return efx->type->filter_count_rx_used(efx, priority);
+}
+static inline u32 efx_filter_get_rx_id_limit(struct efx_nic *efx)
+{
+	return efx->type->filter_get_rx_id_limit(efx);
+}
+static inline s32 efx_filter_get_rx_ids(struct efx_nic *efx,
+					enum efx_filter_priority priority,
+					u32 *buf, u32 size)
+{
+	return efx->type->filter_get_rx_ids(efx, priority, buf, size);
+}
 #ifdef CONFIG_RFS_ACCEL
 extern int efx_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 			  u16 rxq_index, u32 flow_id);
diff --git a/drivers/net/ethernet/sfc/falcon.c b/drivers/net/ethernet/sfc/falcon.c
index 0fd8a88..6ea28f8 100644
--- a/drivers/net/ethernet/sfc/falcon.c
+++ b/drivers/net/ethernet/sfc/falcon.c
@@ -2400,6 +2400,21 @@ const struct efx_nic_type falcon_a1_nic_type = {
 	.ev_read_ack = efx_farch_ev_read_ack,
 	.ev_test_generate = efx_farch_ev_test_generate,
 
+	/* We don't expose the filter table on Falcon A1 as it is not
+	 * mapped into function 0, but these implementations still
+	 * work with a degenerate case of all tables set to size 0.
+	 */
+	.filter_table_probe = efx_farch_filter_table_probe,
+	.filter_table_restore = efx_farch_filter_table_restore,
+	.filter_table_remove = efx_farch_filter_table_remove,
+	.filter_insert = efx_farch_filter_insert,
+	.filter_remove_safe = efx_farch_filter_remove_safe,
+	.filter_get_safe = efx_farch_filter_get_safe,
+	.filter_clear_rx = efx_farch_filter_clear_rx,
+	.filter_count_rx_used = efx_farch_filter_count_rx_used,
+	.filter_get_rx_id_limit = efx_farch_filter_get_rx_id_limit,
+	.filter_get_rx_ids = efx_farch_filter_get_rx_ids,
+
 	.revision = EFX_REV_FALCON_A1,
 	.txd_ptr_tbl_base = FR_AA_TX_DESC_PTR_TBL_KER,
 	.rxd_ptr_tbl_base = FR_AA_RX_DESC_PTR_TBL_KER,
@@ -2468,6 +2483,21 @@ const struct efx_nic_type falcon_b0_nic_type = {
 	.ev_process = efx_farch_ev_process,
 	.ev_read_ack = efx_farch_ev_read_ack,
 	.ev_test_generate = efx_farch_ev_test_generate,
+	.filter_table_probe = efx_farch_filter_table_probe,
+	.filter_table_restore = efx_farch_filter_table_restore,
+	.filter_table_remove = efx_farch_filter_table_remove,
+	.filter_update_rx_scatter = efx_farch_filter_update_rx_scatter,
+	.filter_insert = efx_farch_filter_insert,
+	.filter_remove_safe = efx_farch_filter_remove_safe,
+	.filter_get_safe = efx_farch_filter_get_safe,
+	.filter_clear_rx = efx_farch_filter_clear_rx,
+	.filter_count_rx_used = efx_farch_filter_count_rx_used,
+	.filter_get_rx_id_limit = efx_farch_filter_get_rx_id_limit,
+	.filter_get_rx_ids = efx_farch_filter_get_rx_ids,
+#ifdef CONFIG_RFS_ACCEL
+	.filter_rfs_insert = efx_farch_filter_rfs_insert,
+	.filter_rfs_expire_one = efx_farch_filter_rfs_expire_one,
+#endif
 
 	.revision = EFX_REV_FALCON_B0,
 	.txd_ptr_tbl_base = FR_BZ_TX_DESC_PTR_TBL,
@@ -2483,5 +2513,6 @@ const struct efx_nic_type falcon_b0_nic_type = {
 	.timer_period_max =  1 << FRF_AB_TC_TIMER_VAL_WIDTH,
 	.offload_features = NETIF_F_IP_CSUM | NETIF_F_RXHASH | NETIF_F_NTUPLE,
 	.mcdi_max_ver = -1,
+	.max_rx_ip_filters = FR_BZ_RX_FILTER_TBL0_ROWS,
 };
 
diff --git a/drivers/net/ethernet/sfc/farch.c b/drivers/net/ethernet/sfc/farch.c
index 7f50882..1941804 100644
--- a/drivers/net/ethernet/sfc/farch.c
+++ b/drivers/net/ethernet/sfc/farch.c
@@ -1779,3 +1779,1111 @@ void efx_farch_init_common(struct efx_nic *efx)
 		efx_writeo(efx, &temp, FR_BZ_TX_PACE);
 	}
 }
+
+/**************************************************************************
+ *
+ * Filter tables
+ *
+ **************************************************************************
+ */
+
+/* "Fudge factors" - difference between programmed value and actual depth.
+ * Due to pipelined implementation we need to program H/W with a value that
+ * is larger than the hop limit we want.
+ */
+#define EFX_FARCH_FILTER_CTL_SRCH_FUDGE_WILD 3
+#define EFX_FARCH_FILTER_CTL_SRCH_FUDGE_FULL 1
+
+/* Hard maximum search limit.  Hardware will time-out beyond 200-something.
+ * We also need to avoid infinite loops in efx_farch_filter_search() when the
+ * table is full.
+ */
+#define EFX_FARCH_FILTER_CTL_SRCH_MAX 200
+
+/* Don't try very hard to find space for performance hints, as this is
+ * counter-productive. */
+#define EFX_FARCH_FILTER_CTL_SRCH_HINT_MAX 5
+
+enum efx_farch_filter_type {
+	EFX_FARCH_FILTER_TCP_FULL = 0,
+	EFX_FARCH_FILTER_TCP_WILD,
+	EFX_FARCH_FILTER_UDP_FULL,
+	EFX_FARCH_FILTER_UDP_WILD,
+	EFX_FARCH_FILTER_MAC_FULL = 4,
+	EFX_FARCH_FILTER_MAC_WILD,
+	EFX_FARCH_FILTER_UC_DEF = 8,
+	EFX_FARCH_FILTER_MC_DEF,
+	EFX_FARCH_FILTER_TYPE_COUNT,		/* number of specific types */
+};
+
+enum efx_farch_filter_table_id {
+	EFX_FARCH_FILTER_TABLE_RX_IP = 0,
+	EFX_FARCH_FILTER_TABLE_RX_MAC,
+	EFX_FARCH_FILTER_TABLE_RX_DEF,
+	EFX_FARCH_FILTER_TABLE_TX_MAC,
+	EFX_FARCH_FILTER_TABLE_COUNT,
+};
+
+enum efx_farch_filter_index {
+	EFX_FARCH_FILTER_INDEX_UC_DEF,
+	EFX_FARCH_FILTER_INDEX_MC_DEF,
+	EFX_FARCH_FILTER_SIZE_RX_DEF,
+};
+
+struct efx_farch_filter_spec {
+	u8	type:4;
+	u8	priority:4;
+	u8	flags;
+	u16	dmaq_id;
+	u32	data[3];
+};
+
+struct efx_farch_filter_table {
+	enum efx_farch_filter_table_id id;
+	u32		offset;		/* address of table relative to BAR */
+	unsigned	size;		/* number of entries */
+	unsigned	step;		/* step between entries */
+	unsigned	used;		/* number currently used */
+	unsigned long	*used_bitmap;
+	struct efx_farch_filter_spec *spec;
+	unsigned	search_limit[EFX_FARCH_FILTER_TYPE_COUNT];
+};
+
+struct efx_farch_filter_state {
+	struct efx_farch_filter_table table[EFX_FARCH_FILTER_TABLE_COUNT];
+};
+
+static void
+efx_farch_filter_table_clear_entry(struct efx_nic *efx,
+				   struct efx_farch_filter_table *table,
+				   unsigned int filter_idx);
+
+/* The filter hash function is LFSR polynomial x^16 + x^3 + 1 of a 32-bit
+ * key derived from the n-tuple.  The initial LFSR state is 0xffff. */
+static u16 efx_farch_filter_hash(u32 key)
+{
+	u16 tmp;
+
+	/* First 16 rounds */
+	tmp = 0x1fff ^ key >> 16;
+	tmp = tmp ^ tmp >> 3 ^ tmp >> 6;
+	tmp = tmp ^ tmp >> 9;
+	/* Last 16 rounds */
+	tmp = tmp ^ tmp << 13 ^ key;
+	tmp = tmp ^ tmp >> 3 ^ tmp >> 6;
+	return tmp ^ tmp >> 9;
+}
+
+/* To allow for hash collisions, filter search continues at these
+ * increments from the first possible entry selected by the hash. */
+static u16 efx_farch_filter_increment(u32 key)
+{
+	return key * 2 - 1;
+}
+
+static enum efx_farch_filter_table_id
+efx_farch_filter_spec_table_id(const struct efx_farch_filter_spec *spec)
+{
+	BUILD_BUG_ON(EFX_FARCH_FILTER_TABLE_RX_IP !=
+		     (EFX_FARCH_FILTER_TCP_FULL >> 2));
+	BUILD_BUG_ON(EFX_FARCH_FILTER_TABLE_RX_IP !=
+		     (EFX_FARCH_FILTER_TCP_WILD >> 2));
+	BUILD_BUG_ON(EFX_FARCH_FILTER_TABLE_RX_IP !=
+		     (EFX_FARCH_FILTER_UDP_FULL >> 2));
+	BUILD_BUG_ON(EFX_FARCH_FILTER_TABLE_RX_IP !=
+		     (EFX_FARCH_FILTER_UDP_WILD >> 2));
+	BUILD_BUG_ON(EFX_FARCH_FILTER_TABLE_RX_MAC !=
+		     (EFX_FARCH_FILTER_MAC_FULL >> 2));
+	BUILD_BUG_ON(EFX_FARCH_FILTER_TABLE_RX_MAC !=
+		     (EFX_FARCH_FILTER_MAC_WILD >> 2));
+	BUILD_BUG_ON(EFX_FARCH_FILTER_TABLE_TX_MAC !=
+		     EFX_FARCH_FILTER_TABLE_RX_MAC + 2);
+	return (spec->type >> 2) + ((spec->flags & EFX_FILTER_FLAG_TX) ? 2 : 0);
+}
+
+static void efx_farch_filter_push_rx_config(struct efx_nic *efx)
+{
+	struct efx_farch_filter_state *state = efx->filter_state;
+	struct efx_farch_filter_table *table;
+	efx_oword_t filter_ctl;
+
+	efx_reado(efx, &filter_ctl, FR_BZ_RX_FILTER_CTL);
+
+	table = &state->table[EFX_FARCH_FILTER_TABLE_RX_IP];
+	EFX_SET_OWORD_FIELD(filter_ctl, FRF_BZ_TCP_FULL_SRCH_LIMIT,
+			    table->search_limit[EFX_FARCH_FILTER_TCP_FULL] +
+			    EFX_FARCH_FILTER_CTL_SRCH_FUDGE_FULL);
+	EFX_SET_OWORD_FIELD(filter_ctl, FRF_BZ_TCP_WILD_SRCH_LIMIT,
+			    table->search_limit[EFX_FARCH_FILTER_TCP_WILD] +
+			    EFX_FARCH_FILTER_CTL_SRCH_FUDGE_WILD);
+	EFX_SET_OWORD_FIELD(filter_ctl, FRF_BZ_UDP_FULL_SRCH_LIMIT,
+			    table->search_limit[EFX_FARCH_FILTER_UDP_FULL] +
+			    EFX_FARCH_FILTER_CTL_SRCH_FUDGE_FULL);
+	EFX_SET_OWORD_FIELD(filter_ctl, FRF_BZ_UDP_WILD_SRCH_LIMIT,
+			    table->search_limit[EFX_FARCH_FILTER_UDP_WILD] +
+			    EFX_FARCH_FILTER_CTL_SRCH_FUDGE_WILD);
+
+	table = &state->table[EFX_FARCH_FILTER_TABLE_RX_MAC];
+	if (table->size) {
+		EFX_SET_OWORD_FIELD(
+			filter_ctl, FRF_CZ_ETHERNET_FULL_SEARCH_LIMIT,
+			table->search_limit[EFX_FARCH_FILTER_MAC_FULL] +
+			EFX_FARCH_FILTER_CTL_SRCH_FUDGE_FULL);
+		EFX_SET_OWORD_FIELD(
+			filter_ctl, FRF_CZ_ETHERNET_WILDCARD_SEARCH_LIMIT,
+			table->search_limit[EFX_FARCH_FILTER_MAC_WILD] +
+			EFX_FARCH_FILTER_CTL_SRCH_FUDGE_WILD);
+	}
+
+	table = &state->table[EFX_FARCH_FILTER_TABLE_RX_DEF];
+	if (table->size) {
+		EFX_SET_OWORD_FIELD(
+			filter_ctl, FRF_CZ_UNICAST_NOMATCH_Q_ID,
+			table->spec[EFX_FARCH_FILTER_INDEX_UC_DEF].dmaq_id);
+		EFX_SET_OWORD_FIELD(
+			filter_ctl, FRF_CZ_UNICAST_NOMATCH_RSS_ENABLED,
+			!!(table->spec[EFX_FARCH_FILTER_INDEX_UC_DEF].flags &
+			   EFX_FILTER_FLAG_RX_RSS));
+		EFX_SET_OWORD_FIELD(
+			filter_ctl, FRF_CZ_MULTICAST_NOMATCH_Q_ID,
+			table->spec[EFX_FARCH_FILTER_INDEX_MC_DEF].dmaq_id);
+		EFX_SET_OWORD_FIELD(
+			filter_ctl, FRF_CZ_MULTICAST_NOMATCH_RSS_ENABLED,
+			!!(table->spec[EFX_FARCH_FILTER_INDEX_MC_DEF].flags &
+			   EFX_FILTER_FLAG_RX_RSS));
+
+		/* There is a single bit to enable RX scatter for all
+		 * unmatched packets.  Only set it if scatter is
+		 * enabled in both filter specs.
+		 */
+		EFX_SET_OWORD_FIELD(
+			filter_ctl, FRF_BZ_SCATTER_ENBL_NO_MATCH_Q,
+			!!(table->spec[EFX_FARCH_FILTER_INDEX_UC_DEF].flags &
+			   table->spec[EFX_FARCH_FILTER_INDEX_MC_DEF].flags &
+			   EFX_FILTER_FLAG_RX_SCATTER));
+	} else if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0) {
+		/* We don't expose 'default' filters because unmatched
+		 * packets always go to the queue number found in the
+		 * RSS table.  But we still need to set the RX scatter
+		 * bit here.
+		 */
+		EFX_SET_OWORD_FIELD(
+			filter_ctl, FRF_BZ_SCATTER_ENBL_NO_MATCH_Q,
+			efx->rx_scatter);
+	}
+
+	efx_writeo(efx, &filter_ctl, FR_BZ_RX_FILTER_CTL);
+}
+
+static void efx_farch_filter_push_tx_limits(struct efx_nic *efx)
+{
+	struct efx_farch_filter_state *state = efx->filter_state;
+	struct efx_farch_filter_table *table;
+	efx_oword_t tx_cfg;
+
+	efx_reado(efx, &tx_cfg, FR_AZ_TX_CFG);
+
+	table = &state->table[EFX_FARCH_FILTER_TABLE_TX_MAC];
+	if (table->size) {
+		EFX_SET_OWORD_FIELD(
+			tx_cfg, FRF_CZ_TX_ETH_FILTER_FULL_SEARCH_RANGE,
+			table->search_limit[EFX_FARCH_FILTER_MAC_FULL] +
+			EFX_FARCH_FILTER_CTL_SRCH_FUDGE_FULL);
+		EFX_SET_OWORD_FIELD(
+			tx_cfg, FRF_CZ_TX_ETH_FILTER_WILD_SEARCH_RANGE,
+			table->search_limit[EFX_FARCH_FILTER_MAC_WILD] +
+			EFX_FARCH_FILTER_CTL_SRCH_FUDGE_WILD);
+	}
+
+	efx_writeo(efx, &tx_cfg, FR_AZ_TX_CFG);
+}
+
+static int
+efx_farch_filter_from_gen_spec(struct efx_farch_filter_spec *spec,
+			       const struct efx_filter_spec *gen_spec)
+{
+	bool is_full = false;
+
+	if ((gen_spec->flags & EFX_FILTER_FLAG_RX_RSS) &&
+	    gen_spec->rss_context != EFX_FILTER_RSS_CONTEXT_DEFAULT)
+		return -EINVAL;
+
+	spec->priority = gen_spec->priority;
+	spec->flags = gen_spec->flags;
+	spec->dmaq_id = gen_spec->dmaq_id;
+
+	switch (gen_spec->match_flags) {
+	case (EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_IP_PROTO |
+	      EFX_FILTER_MATCH_LOC_HOST | EFX_FILTER_MATCH_LOC_PORT |
+	      EFX_FILTER_MATCH_REM_HOST | EFX_FILTER_MATCH_REM_PORT):
+		is_full = true;
+		/* fall through */
+	case (EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_IP_PROTO |
+	      EFX_FILTER_MATCH_LOC_HOST | EFX_FILTER_MATCH_LOC_PORT): {
+		__be32 rhost, host1, host2;
+		__be16 rport, port1, port2;
+
+		EFX_BUG_ON_PARANOID(!(gen_spec->flags & EFX_FILTER_FLAG_RX));
+
+		if (gen_spec->ether_type != htons(ETH_P_IP))
+			return -EPROTONOSUPPORT;
+		if (gen_spec->loc_port == 0 ||
+		    (is_full && gen_spec->rem_port == 0))
+			return -EADDRNOTAVAIL;
+		switch (gen_spec->ip_proto) {
+		case IPPROTO_TCP:
+			spec->type = (is_full ? EFX_FARCH_FILTER_TCP_FULL :
+				      EFX_FARCH_FILTER_TCP_WILD);
+			break;
+		case IPPROTO_UDP:
+			spec->type = (is_full ? EFX_FARCH_FILTER_UDP_FULL :
+				      EFX_FARCH_FILTER_UDP_WILD);
+			break;
+		default:
+			return -EPROTONOSUPPORT;
+		}
+
+		/* Filter is constructed in terms of source and destination,
+		 * with the odd wrinkle that the ports are swapped in a UDP
+		 * wildcard filter.  We need to convert from local and remote
+		 * (= zero for wildcard) addresses.
+		 */
+		rhost = is_full ? gen_spec->rem_host[0] : 0;
+		rport = is_full ? gen_spec->rem_port : 0;
+		host1 = rhost;
+		host2 = gen_spec->loc_host[0];
+		if (!is_full && gen_spec->ip_proto == IPPROTO_UDP) {
+			port1 = gen_spec->loc_port;
+			port2 = rport;
+		} else {
+			port1 = rport;
+			port2 = gen_spec->loc_port;
+		}
+		spec->data[0] = ntohl(host1) << 16 | ntohs(port1);
+		spec->data[1] = ntohs(port2) << 16 | ntohl(host1) >> 16;
+		spec->data[2] = ntohl(host2);
+
+		break;
+	}
+
+	case EFX_FILTER_MATCH_LOC_MAC | EFX_FILTER_MATCH_OUTER_VID:
+		is_full = true;
+		/* fall through */
+	case EFX_FILTER_MATCH_LOC_MAC:
+		spec->type = (is_full ? EFX_FARCH_FILTER_MAC_FULL :
+			      EFX_FARCH_FILTER_MAC_WILD);
+		spec->data[0] = is_full ? ntohs(gen_spec->outer_vid) : 0;
+		spec->data[1] = (gen_spec->loc_mac[2] << 24 |
+				 gen_spec->loc_mac[3] << 16 |
+				 gen_spec->loc_mac[4] << 8 |
+				 gen_spec->loc_mac[5]);
+		spec->data[2] = (gen_spec->loc_mac[0] << 8 |
+				 gen_spec->loc_mac[1]);
+		break;
+
+	case EFX_FILTER_MATCH_LOC_MAC_IG:
+		spec->type = (is_multicast_ether_addr(gen_spec->loc_mac) ?
+			      EFX_FARCH_FILTER_MC_DEF :
+			      EFX_FARCH_FILTER_UC_DEF);
+		memset(spec->data, 0, sizeof(spec->data)); /* ensure equality */
+		break;
+
+	default:
+		return -EPROTONOSUPPORT;
+	}
+
+	return 0;
+}
+
+static void
+efx_farch_filter_to_gen_spec(struct efx_filter_spec *gen_spec,
+			     const struct efx_farch_filter_spec *spec)
+{
+	bool is_full = false;
+
+	/* *gen_spec should be completely initialised, to be consistent
+	 * with efx_filter_init_{rx,tx}() and in case we want to copy
+	 * it back to userland.
+	 */
+	memset(gen_spec, 0, sizeof(*gen_spec));
+
+	gen_spec->priority = spec->priority;
+	gen_spec->flags = spec->flags;
+	gen_spec->dmaq_id = spec->dmaq_id;
+
+	switch (spec->type) {
+	case EFX_FARCH_FILTER_TCP_FULL:
+	case EFX_FARCH_FILTER_UDP_FULL:
+		is_full = true;
+		/* fall through */
+	case EFX_FARCH_FILTER_TCP_WILD:
+	case EFX_FARCH_FILTER_UDP_WILD: {
+		__be32 host1, host2;
+		__be16 port1, port2;
+
+		gen_spec->match_flags =
+			EFX_FILTER_MATCH_ETHER_TYPE |
+			EFX_FILTER_MATCH_IP_PROTO |
+			EFX_FILTER_MATCH_LOC_HOST | EFX_FILTER_MATCH_LOC_PORT;
+		if (is_full)
+			gen_spec->match_flags |= (EFX_FILTER_MATCH_REM_HOST |
+						  EFX_FILTER_MATCH_REM_PORT);
+		gen_spec->ether_type = htons(ETH_P_IP);
+		gen_spec->ip_proto =
+			(spec->type == EFX_FARCH_FILTER_TCP_FULL ||
+			 spec->type == EFX_FARCH_FILTER_TCP_WILD) ?
+			IPPROTO_TCP : IPPROTO_UDP;
+
+		host1 = htonl(spec->data[0] >> 16 | spec->data[1] << 16);
+		port1 = htons(spec->data[0]);
+		host2 = htonl(spec->data[2]);
+		port2 = htons(spec->data[1] >> 16);
+		if (spec->flags & EFX_FILTER_FLAG_TX) {
+			gen_spec->loc_host[0] = host1;
+			gen_spec->rem_host[0] = host2;
+		} else {
+			gen_spec->loc_host[0] = host2;
+			gen_spec->rem_host[0] = host1;
+		}
+		if (!!(gen_spec->flags & EFX_FILTER_FLAG_TX) ^
+		    (!is_full && gen_spec->ip_proto == IPPROTO_UDP)) {
+			gen_spec->loc_port = port1;
+			gen_spec->rem_port = port2;
+		} else {
+			gen_spec->loc_port = port2;
+			gen_spec->rem_port = port1;
+		}
+
+		break;
+	}
+
+	case EFX_FARCH_FILTER_MAC_FULL:
+		is_full = true;
+		/* fall through */
+	case EFX_FARCH_FILTER_MAC_WILD:
+		gen_spec->match_flags = EFX_FILTER_MATCH_LOC_MAC;
+		if (is_full)
+			gen_spec->match_flags |= EFX_FILTER_MATCH_OUTER_VID;
+		gen_spec->loc_mac[0] = spec->data[2] >> 8;
+		gen_spec->loc_mac[1] = spec->data[2];
+		gen_spec->loc_mac[2] = spec->data[1] >> 24;
+		gen_spec->loc_mac[3] = spec->data[1] >> 16;
+		gen_spec->loc_mac[4] = spec->data[1] >> 8;
+		gen_spec->loc_mac[5] = spec->data[1];
+		gen_spec->outer_vid = htons(spec->data[0]);
+		break;
+
+	case EFX_FARCH_FILTER_UC_DEF:
+	case EFX_FARCH_FILTER_MC_DEF:
+		gen_spec->match_flags = EFX_FILTER_MATCH_LOC_MAC_IG;
+		gen_spec->loc_mac[0] = spec->type == EFX_FARCH_FILTER_MC_DEF;
+		break;
+
+	default:
+		WARN_ON(1);
+		break;
+	}
+}
+
+static void
+efx_farch_filter_reset_rx_def(struct efx_nic *efx, unsigned filter_idx)
+{
+	struct efx_farch_filter_state *state = efx->filter_state;
+	struct efx_farch_filter_table *table =
+		&state->table[EFX_FARCH_FILTER_TABLE_RX_DEF];
+	struct efx_farch_filter_spec *spec = &table->spec[filter_idx];
+
+	/* If there's only one channel then disable RSS for non VF
+	 * traffic, thereby allowing VFs to use RSS when the PF can't.
+	 */
+	spec->type = EFX_FARCH_FILTER_UC_DEF + filter_idx;
+	spec->priority = EFX_FILTER_PRI_MANUAL;
+	spec->flags = (EFX_FILTER_FLAG_RX |
+		       (efx->n_rx_channels > 1 ? EFX_FILTER_FLAG_RX_RSS : 0) |
+		       (efx->rx_scatter ? EFX_FILTER_FLAG_RX_SCATTER : 0));
+	spec->dmaq_id = 0;
+	table->used_bitmap[0] |= 1 << filter_idx;
+}
+
+/* Build a filter entry and return its n-tuple key. */
+static u32 efx_farch_filter_build(efx_oword_t *filter,
+				  struct efx_farch_filter_spec *spec)
+{
+	u32 data3;
+
+	switch (efx_farch_filter_spec_table_id(spec)) {
+	case EFX_FARCH_FILTER_TABLE_RX_IP: {
+		bool is_udp = (spec->type == EFX_FARCH_FILTER_UDP_FULL ||
+			       spec->type == EFX_FARCH_FILTER_UDP_WILD);
+		EFX_POPULATE_OWORD_7(
+			*filter,
+			FRF_BZ_RSS_EN,
+			!!(spec->flags & EFX_FILTER_FLAG_RX_RSS),
+			FRF_BZ_SCATTER_EN,
+			!!(spec->flags & EFX_FILTER_FLAG_RX_SCATTER),
+			FRF_BZ_TCP_UDP, is_udp,
+			FRF_BZ_RXQ_ID, spec->dmaq_id,
+			EFX_DWORD_2, spec->data[2],
+			EFX_DWORD_1, spec->data[1],
+			EFX_DWORD_0, spec->data[0]);
+		data3 = is_udp;
+		break;
+	}
+
+	case EFX_FARCH_FILTER_TABLE_RX_MAC: {
+		bool is_wild = spec->type == EFX_FARCH_FILTER_MAC_WILD;
+		EFX_POPULATE_OWORD_7(
+			*filter,
+			FRF_CZ_RMFT_RSS_EN,
+			!!(spec->flags & EFX_FILTER_FLAG_RX_RSS),
+			FRF_CZ_RMFT_SCATTER_EN,
+			!!(spec->flags & EFX_FILTER_FLAG_RX_SCATTER),
+			FRF_CZ_RMFT_RXQ_ID, spec->dmaq_id,
+			FRF_CZ_RMFT_WILDCARD_MATCH, is_wild,
+			FRF_CZ_RMFT_DEST_MAC_HI, spec->data[2],
+			FRF_CZ_RMFT_DEST_MAC_LO, spec->data[1],
+			FRF_CZ_RMFT_VLAN_ID, spec->data[0]);
+		data3 = is_wild;
+		break;
+	}
+
+	case EFX_FARCH_FILTER_TABLE_TX_MAC: {
+		bool is_wild = spec->type == EFX_FARCH_FILTER_MAC_WILD;
+		EFX_POPULATE_OWORD_5(*filter,
+				     FRF_CZ_TMFT_TXQ_ID, spec->dmaq_id,
+				     FRF_CZ_TMFT_WILDCARD_MATCH, is_wild,
+				     FRF_CZ_TMFT_SRC_MAC_HI, spec->data[2],
+				     FRF_CZ_TMFT_SRC_MAC_LO, spec->data[1],
+				     FRF_CZ_TMFT_VLAN_ID, spec->data[0]);
+		data3 = is_wild | spec->dmaq_id << 1;
+		break;
+	}
+
+	default:
+		BUG();
+	}
+
+	return spec->data[0] ^ spec->data[1] ^ spec->data[2] ^ data3;
+}
+
+static bool efx_farch_filter_equal(const struct efx_farch_filter_spec *left,
+				   const struct efx_farch_filter_spec *right)
+{
+	if (left->type != right->type ||
+	    memcmp(left->data, right->data, sizeof(left->data)))
+		return false;
+
+	if (left->flags & EFX_FILTER_FLAG_TX &&
+	    left->dmaq_id != right->dmaq_id)
+		return false;
+
+	return true;
+}
+
+/*
+ * Construct/deconstruct external filter IDs.  At least the RX filter
+ * IDs must be ordered by matching priority, for RX NFC semantics.
+ *
+ * Deconstruction needs to be robust against invalid IDs so that
+ * efx_filter_remove_id_safe() and efx_filter_get_filter_safe() can
+ * accept user-provided IDs.
+ */
+
+#define EFX_FARCH_FILTER_MATCH_PRI_COUNT	5
+
+static const u8 efx_farch_filter_type_match_pri[EFX_FARCH_FILTER_TYPE_COUNT] = {
+	[EFX_FARCH_FILTER_TCP_FULL]	= 0,
+	[EFX_FARCH_FILTER_UDP_FULL]	= 0,
+	[EFX_FARCH_FILTER_TCP_WILD]	= 1,
+	[EFX_FARCH_FILTER_UDP_WILD]	= 1,
+	[EFX_FARCH_FILTER_MAC_FULL]	= 2,
+	[EFX_FARCH_FILTER_MAC_WILD]	= 3,
+	[EFX_FARCH_FILTER_UC_DEF]	= 4,
+	[EFX_FARCH_FILTER_MC_DEF]	= 4,
+};
+
+static const enum efx_farch_filter_table_id efx_farch_filter_range_table[] = {
+	EFX_FARCH_FILTER_TABLE_RX_IP,	/* RX match pri 0 */
+	EFX_FARCH_FILTER_TABLE_RX_IP,
+	EFX_FARCH_FILTER_TABLE_RX_MAC,
+	EFX_FARCH_FILTER_TABLE_RX_MAC,
+	EFX_FARCH_FILTER_TABLE_RX_DEF,	/* RX match pri 4 */
+	EFX_FARCH_FILTER_TABLE_TX_MAC,	/* TX match pri 0 */
+	EFX_FARCH_FILTER_TABLE_TX_MAC,	/* TX match pri 1 */
+};
+
+#define EFX_FARCH_FILTER_INDEX_WIDTH 13
+#define EFX_FARCH_FILTER_INDEX_MASK ((1 << EFX_FARCH_FILTER_INDEX_WIDTH) - 1)
+
+static inline u32
+efx_farch_filter_make_id(const struct efx_farch_filter_spec *spec,
+			 unsigned int index)
+{
+	unsigned int range;
+
+	range = efx_farch_filter_type_match_pri[spec->type];
+	if (!(spec->flags & EFX_FILTER_FLAG_RX))
+		range += EFX_FARCH_FILTER_MATCH_PRI_COUNT;
+
+	return range << EFX_FARCH_FILTER_INDEX_WIDTH | index;
+}
+
+static inline enum efx_farch_filter_table_id
+efx_farch_filter_id_table_id(u32 id)
+{
+	unsigned int range = id >> EFX_FARCH_FILTER_INDEX_WIDTH;
+
+	if (range < ARRAY_SIZE(efx_farch_filter_range_table))
+		return efx_farch_filter_range_table[range];
+	else
+		return EFX_FARCH_FILTER_TABLE_COUNT; /* invalid */
+}
+
+static inline unsigned int efx_farch_filter_id_index(u32 id)
+{
+	return id & EFX_FARCH_FILTER_INDEX_MASK;
+}
+
+u32 efx_farch_filter_get_rx_id_limit(struct efx_nic *efx)
+{
+	struct efx_farch_filter_state *state = efx->filter_state;
+	unsigned int range = EFX_FARCH_FILTER_MATCH_PRI_COUNT - 1;
+	enum efx_farch_filter_table_id table_id;
+
+	do {
+		table_id = efx_farch_filter_range_table[range];
+		if (state->table[table_id].size != 0)
+			return range << EFX_FARCH_FILTER_INDEX_WIDTH |
+				state->table[table_id].size;
+	} while (range--);
+
+	return 0;
+}
+
+s32 efx_farch_filter_insert(struct efx_nic *efx,
+			    struct efx_filter_spec *gen_spec,
+			    bool replace_equal)
+{
+	struct efx_farch_filter_state *state = efx->filter_state;
+	struct efx_farch_filter_table *table;
+	struct efx_farch_filter_spec spec;
+	efx_oword_t filter;
+	int rep_index, ins_index;
+	unsigned int depth = 0;
+	int rc;
+
+	rc = efx_farch_filter_from_gen_spec(&spec, gen_spec);
+	if (rc)
+		return rc;
+
+	table = &state->table[efx_farch_filter_spec_table_id(&spec)];
+	if (table->size == 0)
+		return -EINVAL;
+
+	netif_vdbg(efx, hw, efx->net_dev,
+		   "%s: type %d search_limit=%d", __func__, spec.type,
+		   table->search_limit[spec.type]);
+
+	if (table->id == EFX_FARCH_FILTER_TABLE_RX_DEF) {
+		/* One filter spec per type */
+		BUILD_BUG_ON(EFX_FARCH_FILTER_INDEX_UC_DEF != 0);
+		BUILD_BUG_ON(EFX_FARCH_FILTER_INDEX_MC_DEF !=
+			     EFX_FARCH_FILTER_MC_DEF - EFX_FARCH_FILTER_UC_DEF);
+		rep_index = spec.type - EFX_FARCH_FILTER_UC_DEF;
+		ins_index = rep_index;
+
+		spin_lock_bh(&efx->filter_lock);
+	} else {
+		/* Search concurrently for
+		 * (1) a filter to be replaced (rep_index): any filter
+		 *     with the same match values, up to the current
+		 *     search depth for this type, and
+		 * (2) the insertion point (ins_index): (1) or any
+		 *     free slot before it or up to the maximum search
+		 *     depth for this priority
+		 * We fail if we cannot find (2).
+		 *
+		 * We can stop once either
+		 * (a) we find (1), in which case we have definitely
+		 *     found (2) as well; or
+		 * (b) we have searched exhaustively for (1), and have
+		 *     either found (2) or searched exhaustively for it
+		 */
+		u32 key = efx_farch_filter_build(&filter, &spec);
+		unsigned int hash = efx_farch_filter_hash(key);
+		unsigned int incr = efx_farch_filter_increment(key);
+		unsigned int max_rep_depth = table->search_limit[spec.type];
+		unsigned int max_ins_depth =
+			spec.priority <= EFX_FILTER_PRI_HINT ?
+			EFX_FARCH_FILTER_CTL_SRCH_HINT_MAX :
+			EFX_FARCH_FILTER_CTL_SRCH_MAX;
+		unsigned int i = hash & (table->size - 1);
+
+		ins_index = -1;
+		depth = 1;
+
+		spin_lock_bh(&efx->filter_lock);
+
+		for (;;) {
+			if (!test_bit(i, table->used_bitmap)) {
+				if (ins_index < 0)
+					ins_index = i;
+			} else if (efx_farch_filter_equal(&spec,
+							  &table->spec[i])) {
+				/* Case (a) */
+				if (ins_index < 0)
+					ins_index = i;
+				rep_index = i;
+				break;
+			}
+
+			if (depth >= max_rep_depth &&
+			    (ins_index >= 0 || depth >= max_ins_depth)) {
+				/* Case (b) */
+				if (ins_index < 0) {
+					rc = -EBUSY;
+					goto out;
+				}
+				rep_index = -1;
+				break;
+			}
+
+			i = (i + incr) & (table->size - 1);
+			++depth;
+		}
+	}
+
+	/* If we found a filter to be replaced, check whether we
+	 * should do so
+	 */
+	if (rep_index >= 0) {
+		struct efx_farch_filter_spec *saved_spec =
+			&table->spec[rep_index];
+
+		if (spec.priority == saved_spec->priority && !replace_equal) {
+			rc = -EEXIST;
+			goto out;
+		}
+		if (spec.priority < saved_spec->priority) {
+			rc = -EPERM;
+			goto out;
+		}
+	}
+
+	/* Insert the filter */
+	if (ins_index != rep_index) {
+		__set_bit(ins_index, table->used_bitmap);
+		++table->used;
+	}
+	table->spec[ins_index] = spec;
+
+	if (table->id == EFX_FARCH_FILTER_TABLE_RX_DEF) {
+		efx_farch_filter_push_rx_config(efx);
+	} else {
+		if (table->search_limit[spec.type] < depth) {
+			table->search_limit[spec.type] = depth;
+			if (spec.flags & EFX_FILTER_FLAG_TX)
+				efx_farch_filter_push_tx_limits(efx);
+			else
+				efx_farch_filter_push_rx_config(efx);
+		}
+
+		efx_writeo(efx, &filter,
+			   table->offset + table->step * ins_index);
+
+		/* If we were able to replace a filter by inserting
+		 * at a lower depth, clear the replaced filter
+		 */
+		if (ins_index != rep_index && rep_index >= 0)
+			efx_farch_filter_table_clear_entry(efx, table,
+							   rep_index);
+	}
+
+	netif_vdbg(efx, hw, efx->net_dev,
+		   "%s: filter type %d index %d rxq %u set",
+		   __func__, spec.type, ins_index, spec.dmaq_id);
+	rc = efx_farch_filter_make_id(&spec, ins_index);
+
+out:
+	spin_unlock_bh(&efx->filter_lock);
+	return rc;
+}
+
+static void
+efx_farch_filter_table_clear_entry(struct efx_nic *efx,
+				   struct efx_farch_filter_table *table,
+				   unsigned int filter_idx)
+{
+	static efx_oword_t filter;
+
+	if (table->id == EFX_FARCH_FILTER_TABLE_RX_DEF) {
+		/* RX default filters must always exist */
+		efx_farch_filter_reset_rx_def(efx, filter_idx);
+		efx_farch_filter_push_rx_config(efx);
+	} else if (test_bit(filter_idx, table->used_bitmap)) {
+		__clear_bit(filter_idx, table->used_bitmap);
+		--table->used;
+		memset(&table->spec[filter_idx], 0, sizeof(table->spec[0]));
+
+		efx_writeo(efx, &filter,
+			   table->offset + table->step * filter_idx);
+
+		/* If this filter required a greater search depth than
+		 * any other, the search limit for its type can now be
+		 * decreased.  However, it is hard to determine that
+		 * unless the table has become completely empty - in
+		 * which case, all its search limits can be set to 0.
+		 */
+		if (unlikely(table->used == 0)) {
+			memset(table->search_limit, 0,
+			       sizeof(table->search_limit));
+			if (table->id == EFX_FARCH_FILTER_TABLE_TX_MAC)
+				efx_farch_filter_push_tx_limits(efx);
+			else
+				efx_farch_filter_push_rx_config(efx);
+		}
+	}
+}
+
+int efx_farch_filter_remove_safe(struct efx_nic *efx,
+				 enum efx_filter_priority priority,
+				 u32 filter_id)
+{
+	struct efx_farch_filter_state *state = efx->filter_state;
+	enum efx_farch_filter_table_id table_id;
+	struct efx_farch_filter_table *table;
+	unsigned int filter_idx;
+	struct efx_farch_filter_spec *spec;
+	int rc;
+
+	table_id = efx_farch_filter_id_table_id(filter_id);
+	if ((unsigned int)table_id >= EFX_FARCH_FILTER_TABLE_COUNT)
+		return -ENOENT;
+	table = &state->table[table_id];
+
+	filter_idx = efx_farch_filter_id_index(filter_id);
+	if (filter_idx >= table->size)
+		return -ENOENT;
+	spec = &table->spec[filter_idx];
+
+	spin_lock_bh(&efx->filter_lock);
+
+	if (test_bit(filter_idx, table->used_bitmap) &&
+	    spec->priority == priority) {
+		efx_farch_filter_table_clear_entry(efx, table, filter_idx);
+		rc = 0;
+	} else {
+		rc = -ENOENT;
+	}
+
+	spin_unlock_bh(&efx->filter_lock);
+
+	return rc;
+}
+
+int efx_farch_filter_get_safe(struct efx_nic *efx,
+			      enum efx_filter_priority priority,
+			      u32 filter_id, struct efx_filter_spec *spec_buf)
+{
+	struct efx_farch_filter_state *state = efx->filter_state;
+	enum efx_farch_filter_table_id table_id;
+	struct efx_farch_filter_table *table;
+	struct efx_farch_filter_spec *spec;
+	unsigned int filter_idx;
+	int rc;
+
+	table_id = efx_farch_filter_id_table_id(filter_id);
+	if ((unsigned int)table_id >= EFX_FARCH_FILTER_TABLE_COUNT)
+		return -ENOENT;
+	table = &state->table[table_id];
+
+	filter_idx = efx_farch_filter_id_index(filter_id);
+	if (filter_idx >= table->size)
+		return -ENOENT;
+	spec = &table->spec[filter_idx];
+
+	spin_lock_bh(&efx->filter_lock);
+
+	if (test_bit(filter_idx, table->used_bitmap) &&
+	    spec->priority == priority) {
+		efx_farch_filter_to_gen_spec(spec_buf, spec);
+		rc = 0;
+	} else {
+		rc = -ENOENT;
+	}
+
+	spin_unlock_bh(&efx->filter_lock);
+
+	return rc;
+}
+
+static void
+efx_farch_filter_table_clear(struct efx_nic *efx,
+			     enum efx_farch_filter_table_id table_id,
+			     enum efx_filter_priority priority)
+{
+	struct efx_farch_filter_state *state = efx->filter_state;
+	struct efx_farch_filter_table *table = &state->table[table_id];
+	unsigned int filter_idx;
+
+	spin_lock_bh(&efx->filter_lock);
+	for (filter_idx = 0; filter_idx < table->size; ++filter_idx)
+		if (table->spec[filter_idx].priority <= priority)
+			efx_farch_filter_table_clear_entry(efx, table,
+							   filter_idx);
+	spin_unlock_bh(&efx->filter_lock);
+}
+
+void efx_farch_filter_clear_rx(struct efx_nic *efx,
+			       enum efx_filter_priority priority)
+{
+	efx_farch_filter_table_clear(efx, EFX_FARCH_FILTER_TABLE_RX_IP,
+				     priority);
+	efx_farch_filter_table_clear(efx, EFX_FARCH_FILTER_TABLE_RX_MAC,
+				     priority);
+}
+
+u32 efx_farch_filter_count_rx_used(struct efx_nic *efx,
+				   enum efx_filter_priority priority)
+{
+	struct efx_farch_filter_state *state = efx->filter_state;
+	enum efx_farch_filter_table_id table_id;
+	struct efx_farch_filter_table *table;
+	unsigned int filter_idx;
+	u32 count = 0;
+
+	spin_lock_bh(&efx->filter_lock);
+
+	for (table_id = EFX_FARCH_FILTER_TABLE_RX_IP;
+	     table_id <= EFX_FARCH_FILTER_TABLE_RX_DEF;
+	     table_id++) {
+		table = &state->table[table_id];
+		for (filter_idx = 0; filter_idx < table->size; filter_idx++) {
+			if (test_bit(filter_idx, table->used_bitmap) &&
+			    table->spec[filter_idx].priority == priority)
+				++count;
+		}
+	}
+
+	spin_unlock_bh(&efx->filter_lock);
+
+	return count;
+}
+
+s32 efx_farch_filter_get_rx_ids(struct efx_nic *efx,
+				enum efx_filter_priority priority,
+				u32 *buf, u32 size)
+{
+	struct efx_farch_filter_state *state = efx->filter_state;
+	enum efx_farch_filter_table_id table_id;
+	struct efx_farch_filter_table *table;
+	unsigned int filter_idx;
+	s32 count = 0;
+
+	spin_lock_bh(&efx->filter_lock);
+
+	for (table_id = EFX_FARCH_FILTER_TABLE_RX_IP;
+	     table_id <= EFX_FARCH_FILTER_TABLE_RX_DEF;
+	     table_id++) {
+		table = &state->table[table_id];
+		for (filter_idx = 0; filter_idx < table->size; filter_idx++) {
+			if (test_bit(filter_idx, table->used_bitmap) &&
+			    table->spec[filter_idx].priority == priority) {
+				if (count == size) {
+					count = -EMSGSIZE;
+					goto out;
+				}
+				buf[count++] = efx_farch_filter_make_id(
+					&table->spec[filter_idx], filter_idx);
+			}
+		}
+	}
+out:
+	spin_unlock_bh(&efx->filter_lock);
+
+	return count;
+}
+
+/* Restore filter stater after reset */
+void efx_farch_filter_table_restore(struct efx_nic *efx)
+{
+	struct efx_farch_filter_state *state = efx->filter_state;
+	enum efx_farch_filter_table_id table_id;
+	struct efx_farch_filter_table *table;
+	efx_oword_t filter;
+	unsigned int filter_idx;
+
+	spin_lock_bh(&efx->filter_lock);
+
+	for (table_id = 0; table_id < EFX_FARCH_FILTER_TABLE_COUNT; table_id++) {
+		table = &state->table[table_id];
+
+		/* Check whether this is a regular register table */
+		if (table->step == 0)
+			continue;
+
+		for (filter_idx = 0; filter_idx < table->size; filter_idx++) {
+			if (!test_bit(filter_idx, table->used_bitmap))
+				continue;
+			efx_farch_filter_build(&filter, &table->spec[filter_idx]);
+			efx_writeo(efx, &filter,
+				   table->offset + table->step * filter_idx);
+		}
+	}
+
+	efx_farch_filter_push_rx_config(efx);
+	efx_farch_filter_push_tx_limits(efx);
+
+	spin_unlock_bh(&efx->filter_lock);
+}
+
+void efx_farch_filter_table_remove(struct efx_nic *efx)
+{
+	struct efx_farch_filter_state *state = efx->filter_state;
+	enum efx_farch_filter_table_id table_id;
+
+	for (table_id = 0; table_id < EFX_FARCH_FILTER_TABLE_COUNT; table_id++) {
+		kfree(state->table[table_id].used_bitmap);
+		vfree(state->table[table_id].spec);
+	}
+	kfree(state);
+}
+
+int efx_farch_filter_table_probe(struct efx_nic *efx)
+{
+	struct efx_farch_filter_state *state;
+	struct efx_farch_filter_table *table;
+	unsigned table_id;
+
+	state = kzalloc(sizeof(struct efx_farch_filter_state), GFP_KERNEL);
+	if (!state)
+		return -ENOMEM;
+	efx->filter_state = state;
+
+	if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0) {
+		table = &state->table[EFX_FARCH_FILTER_TABLE_RX_IP];
+		table->id = EFX_FARCH_FILTER_TABLE_RX_IP;
+		table->offset = FR_BZ_RX_FILTER_TBL0;
+		table->size = FR_BZ_RX_FILTER_TBL0_ROWS;
+		table->step = FR_BZ_RX_FILTER_TBL0_STEP;
+	}
+
+	if (efx_nic_rev(efx) >= EFX_REV_SIENA_A0) {
+		table = &state->table[EFX_FARCH_FILTER_TABLE_RX_MAC];
+		table->id = EFX_FARCH_FILTER_TABLE_RX_MAC;
+		table->offset = FR_CZ_RX_MAC_FILTER_TBL0;
+		table->size = FR_CZ_RX_MAC_FILTER_TBL0_ROWS;
+		table->step = FR_CZ_RX_MAC_FILTER_TBL0_STEP;
+
+		table = &state->table[EFX_FARCH_FILTER_TABLE_RX_DEF];
+		table->id = EFX_FARCH_FILTER_TABLE_RX_DEF;
+		table->size = EFX_FARCH_FILTER_SIZE_RX_DEF;
+
+		table = &state->table[EFX_FARCH_FILTER_TABLE_TX_MAC];
+		table->id = EFX_FARCH_FILTER_TABLE_TX_MAC;
+		table->offset = FR_CZ_TX_MAC_FILTER_TBL0;
+		table->size = FR_CZ_TX_MAC_FILTER_TBL0_ROWS;
+		table->step = FR_CZ_TX_MAC_FILTER_TBL0_STEP;
+	}
+
+	for (table_id = 0; table_id < EFX_FARCH_FILTER_TABLE_COUNT; table_id++) {
+		table = &state->table[table_id];
+		if (table->size == 0)
+			continue;
+		table->used_bitmap = kcalloc(BITS_TO_LONGS(table->size),
+					     sizeof(unsigned long),
+					     GFP_KERNEL);
+		if (!table->used_bitmap)
+			goto fail;
+		table->spec = vzalloc(table->size * sizeof(*table->spec));
+		if (!table->spec)
+			goto fail;
+	}
+
+	if (state->table[EFX_FARCH_FILTER_TABLE_RX_DEF].size) {
+		/* RX default filters must always exist */
+		unsigned i;
+		for (i = 0; i < EFX_FARCH_FILTER_SIZE_RX_DEF; i++)
+			efx_farch_filter_reset_rx_def(efx, i);
+	}
+
+	efx_farch_filter_push_rx_config(efx);
+
+	return 0;
+
+fail:
+	efx_farch_filter_table_remove(efx);
+	return -ENOMEM;
+}
+
+/* Update scatter enable flags for filters pointing to our own RX queues */
+void efx_farch_filter_update_rx_scatter(struct efx_nic *efx)
+{
+	struct efx_farch_filter_state *state = efx->filter_state;
+	enum efx_farch_filter_table_id table_id;
+	struct efx_farch_filter_table *table;
+	efx_oword_t filter;
+	unsigned int filter_idx;
+
+	spin_lock_bh(&efx->filter_lock);
+
+	for (table_id = EFX_FARCH_FILTER_TABLE_RX_IP;
+	     table_id <= EFX_FARCH_FILTER_TABLE_RX_DEF;
+	     table_id++) {
+		table = &state->table[table_id];
+
+		for (filter_idx = 0; filter_idx < table->size; filter_idx++) {
+			if (!test_bit(filter_idx, table->used_bitmap) ||
+			    table->spec[filter_idx].dmaq_id >=
+			    efx->n_rx_channels)
+				continue;
+
+			if (efx->rx_scatter)
+				table->spec[filter_idx].flags |=
+					EFX_FILTER_FLAG_RX_SCATTER;
+			else
+				table->spec[filter_idx].flags &=
+					~EFX_FILTER_FLAG_RX_SCATTER;
+
+			if (table_id == EFX_FARCH_FILTER_TABLE_RX_DEF)
+				/* Pushed by efx_farch_filter_push_rx_config() */
+				continue;
+
+			efx_farch_filter_build(&filter, &table->spec[filter_idx]);
+			efx_writeo(efx, &filter,
+				   table->offset + table->step * filter_idx);
+		}
+	}
+
+	efx_farch_filter_push_rx_config(efx);
+
+	spin_unlock_bh(&efx->filter_lock);
+}
+
+#ifdef CONFIG_RFS_ACCEL
+
+s32 efx_farch_filter_rfs_insert(struct efx_nic *efx,
+				struct efx_filter_spec *gen_spec)
+{
+	return efx_farch_filter_insert(efx, gen_spec, true);
+}
+
+bool efx_farch_filter_rfs_expire_one(struct efx_nic *efx, u32 flow_id,
+				     unsigned int index)
+{
+	struct efx_farch_filter_state *state = efx->filter_state;
+	struct efx_farch_filter_table *table =
+		&state->table[EFX_FARCH_FILTER_TABLE_RX_IP];
+
+	if (test_bit(index, table->used_bitmap) &&
+	    table->spec[index].priority == EFX_FILTER_PRI_HINT &&
+	    rps_may_expire_flow(efx->net_dev, table->spec[index].dmaq_id,
+				flow_id, index)) {
+		efx_farch_filter_table_clear_entry(efx, table, index);
+		return true;
+	}
+
+	return false;
+}
+
+#endif /* CONFIG_RFS_ACCEL */
diff --git a/drivers/net/ethernet/sfc/filter.c b/drivers/net/ethernet/sfc/filter.c
deleted file mode 100644
index ad66376..0000000
--- a/drivers/net/ethernet/sfc/filter.c
+++ /dev/null
@@ -1,1244 +0,0 @@
-/****************************************************************************
- * Driver for Solarflare Solarstorm network controllers and boards
- * Copyright 2005-2010 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.
- */
-
-#include <linux/in.h>
-#include <net/ip.h>
-#include "efx.h"
-#include "filter.h"
-#include "io.h"
-#include "nic.h"
-#include "farch_regs.h"
-
-/* "Fudge factors" - difference between programmed value and actual depth.
- * Due to pipelined implementation we need to program H/W with a value that
- * is larger than the hop limit we want.
- */
-#define EFX_FARCH_FILTER_CTL_SRCH_FUDGE_WILD 3
-#define EFX_FARCH_FILTER_CTL_SRCH_FUDGE_FULL 1
-
-/* Hard maximum search limit.  Hardware will time-out beyond 200-something.
- * We also need to avoid infinite loops in efx_farch_filter_search() when the
- * table is full.
- */
-#define EFX_FARCH_FILTER_CTL_SRCH_MAX 200
-
-/* Don't try very hard to find space for performance hints, as this is
- * counter-productive. */
-#define EFX_FARCH_FILTER_CTL_SRCH_HINT_MAX 5
-
-enum efx_farch_filter_type {
-	EFX_FARCH_FILTER_TCP_FULL = 0,
-	EFX_FARCH_FILTER_TCP_WILD,
-	EFX_FARCH_FILTER_UDP_FULL,
-	EFX_FARCH_FILTER_UDP_WILD,
-	EFX_FARCH_FILTER_MAC_FULL = 4,
-	EFX_FARCH_FILTER_MAC_WILD,
-	EFX_FARCH_FILTER_UC_DEF = 8,
-	EFX_FARCH_FILTER_MC_DEF,
-	EFX_FARCH_FILTER_TYPE_COUNT,		/* number of specific types */
-};
-
-enum efx_farch_filter_table_id {
-	EFX_FARCH_FILTER_TABLE_RX_IP = 0,
-	EFX_FARCH_FILTER_TABLE_RX_MAC,
-	EFX_FARCH_FILTER_TABLE_RX_DEF,
-	EFX_FARCH_FILTER_TABLE_TX_MAC,
-	EFX_FARCH_FILTER_TABLE_COUNT,
-};
-
-enum efx_farch_filter_index {
-	EFX_FARCH_FILTER_INDEX_UC_DEF,
-	EFX_FARCH_FILTER_INDEX_MC_DEF,
-	EFX_FARCH_FILTER_SIZE_RX_DEF,
-};
-
-struct efx_farch_filter_spec {
-	u8	type:4;
-	u8	priority:4;
-	u8	flags;
-	u16	dmaq_id;
-	u32	data[3];
-};
-
-struct efx_farch_filter_table {
-	enum efx_farch_filter_table_id id;
-	u32		offset;		/* address of table relative to BAR */
-	unsigned	size;		/* number of entries */
-	unsigned	step;		/* step between entries */
-	unsigned	used;		/* number currently used */
-	unsigned long	*used_bitmap;
-	struct efx_farch_filter_spec *spec;
-	unsigned	search_limit[EFX_FARCH_FILTER_TYPE_COUNT];
-};
-
-struct efx_farch_filter_state {
-	struct efx_farch_filter_table table[EFX_FARCH_FILTER_TABLE_COUNT];
-};
-
-static void
-efx_farch_filter_table_clear_entry(struct efx_nic *efx,
-				   struct efx_farch_filter_table *table,
-				   unsigned int filter_idx);
-
-/* The filter hash function is LFSR polynomial x^16 + x^3 + 1 of a 32-bit
- * key derived from the n-tuple.  The initial LFSR state is 0xffff. */
-static u16 efx_farch_filter_hash(u32 key)
-{
-	u16 tmp;
-
-	/* First 16 rounds */
-	tmp = 0x1fff ^ key >> 16;
-	tmp = tmp ^ tmp >> 3 ^ tmp >> 6;
-	tmp = tmp ^ tmp >> 9;
-	/* Last 16 rounds */
-	tmp = tmp ^ tmp << 13 ^ key;
-	tmp = tmp ^ tmp >> 3 ^ tmp >> 6;
-	return tmp ^ tmp >> 9;
-}
-
-/* To allow for hash collisions, filter search continues at these
- * increments from the first possible entry selected by the hash. */
-static u16 efx_farch_filter_increment(u32 key)
-{
-	return key * 2 - 1;
-}
-
-static enum efx_farch_filter_table_id
-efx_farch_filter_spec_table_id(const struct efx_farch_filter_spec *spec)
-{
-	BUILD_BUG_ON(EFX_FARCH_FILTER_TABLE_RX_IP !=
-		     (EFX_FARCH_FILTER_TCP_FULL >> 2));
-	BUILD_BUG_ON(EFX_FARCH_FILTER_TABLE_RX_IP !=
-		     (EFX_FARCH_FILTER_TCP_WILD >> 2));
-	BUILD_BUG_ON(EFX_FARCH_FILTER_TABLE_RX_IP !=
-		     (EFX_FARCH_FILTER_UDP_FULL >> 2));
-	BUILD_BUG_ON(EFX_FARCH_FILTER_TABLE_RX_IP !=
-		     (EFX_FARCH_FILTER_UDP_WILD >> 2));
-	BUILD_BUG_ON(EFX_FARCH_FILTER_TABLE_RX_MAC !=
-		     (EFX_FARCH_FILTER_MAC_FULL >> 2));
-	BUILD_BUG_ON(EFX_FARCH_FILTER_TABLE_RX_MAC !=
-		     (EFX_FARCH_FILTER_MAC_WILD >> 2));
-	BUILD_BUG_ON(EFX_FARCH_FILTER_TABLE_TX_MAC !=
-		     EFX_FARCH_FILTER_TABLE_RX_MAC + 2);
-	return (spec->type >> 2) + ((spec->flags & EFX_FILTER_FLAG_TX) ? 2 : 0);
-}
-
-static void efx_farch_filter_push_rx_config(struct efx_nic *efx)
-{
-	struct efx_farch_filter_state *state = efx->filter_state;
-	struct efx_farch_filter_table *table;
-	efx_oword_t filter_ctl;
-
-	efx_reado(efx, &filter_ctl, FR_BZ_RX_FILTER_CTL);
-
-	table = &state->table[EFX_FARCH_FILTER_TABLE_RX_IP];
-	EFX_SET_OWORD_FIELD(filter_ctl, FRF_BZ_TCP_FULL_SRCH_LIMIT,
-			    table->search_limit[EFX_FARCH_FILTER_TCP_FULL] +
-			    EFX_FARCH_FILTER_CTL_SRCH_FUDGE_FULL);
-	EFX_SET_OWORD_FIELD(filter_ctl, FRF_BZ_TCP_WILD_SRCH_LIMIT,
-			    table->search_limit[EFX_FARCH_FILTER_TCP_WILD] +
-			    EFX_FARCH_FILTER_CTL_SRCH_FUDGE_WILD);
-	EFX_SET_OWORD_FIELD(filter_ctl, FRF_BZ_UDP_FULL_SRCH_LIMIT,
-			    table->search_limit[EFX_FARCH_FILTER_UDP_FULL] +
-			    EFX_FARCH_FILTER_CTL_SRCH_FUDGE_FULL);
-	EFX_SET_OWORD_FIELD(filter_ctl, FRF_BZ_UDP_WILD_SRCH_LIMIT,
-			    table->search_limit[EFX_FARCH_FILTER_UDP_WILD] +
-			    EFX_FARCH_FILTER_CTL_SRCH_FUDGE_WILD);
-
-	table = &state->table[EFX_FARCH_FILTER_TABLE_RX_MAC];
-	if (table->size) {
-		EFX_SET_OWORD_FIELD(
-			filter_ctl, FRF_CZ_ETHERNET_FULL_SEARCH_LIMIT,
-			table->search_limit[EFX_FARCH_FILTER_MAC_FULL] +
-			EFX_FARCH_FILTER_CTL_SRCH_FUDGE_FULL);
-		EFX_SET_OWORD_FIELD(
-			filter_ctl, FRF_CZ_ETHERNET_WILDCARD_SEARCH_LIMIT,
-			table->search_limit[EFX_FARCH_FILTER_MAC_WILD] +
-			EFX_FARCH_FILTER_CTL_SRCH_FUDGE_WILD);
-	}
-
-	table = &state->table[EFX_FARCH_FILTER_TABLE_RX_DEF];
-	if (table->size) {
-		EFX_SET_OWORD_FIELD(
-			filter_ctl, FRF_CZ_UNICAST_NOMATCH_Q_ID,
-			table->spec[EFX_FARCH_FILTER_INDEX_UC_DEF].dmaq_id);
-		EFX_SET_OWORD_FIELD(
-			filter_ctl, FRF_CZ_UNICAST_NOMATCH_RSS_ENABLED,
-			!!(table->spec[EFX_FARCH_FILTER_INDEX_UC_DEF].flags &
-			   EFX_FILTER_FLAG_RX_RSS));
-		EFX_SET_OWORD_FIELD(
-			filter_ctl, FRF_CZ_MULTICAST_NOMATCH_Q_ID,
-			table->spec[EFX_FARCH_FILTER_INDEX_MC_DEF].dmaq_id);
-		EFX_SET_OWORD_FIELD(
-			filter_ctl, FRF_CZ_MULTICAST_NOMATCH_RSS_ENABLED,
-			!!(table->spec[EFX_FARCH_FILTER_INDEX_MC_DEF].flags &
-			   EFX_FILTER_FLAG_RX_RSS));
-
-		/* There is a single bit to enable RX scatter for all
-		 * unmatched packets.  Only set it if scatter is
-		 * enabled in both filter specs.
-		 */
-		EFX_SET_OWORD_FIELD(
-			filter_ctl, FRF_BZ_SCATTER_ENBL_NO_MATCH_Q,
-			!!(table->spec[EFX_FARCH_FILTER_INDEX_UC_DEF].flags &
-			   table->spec[EFX_FARCH_FILTER_INDEX_MC_DEF].flags &
-			   EFX_FILTER_FLAG_RX_SCATTER));
-	} else if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0) {
-		/* We don't expose 'default' filters because unmatched
-		 * packets always go to the queue number found in the
-		 * RSS table.  But we still need to set the RX scatter
-		 * bit here.
-		 */
-		EFX_SET_OWORD_FIELD(
-			filter_ctl, FRF_BZ_SCATTER_ENBL_NO_MATCH_Q,
-			efx->rx_scatter);
-	}
-
-	efx_writeo(efx, &filter_ctl, FR_BZ_RX_FILTER_CTL);
-}
-
-static void efx_farch_filter_push_tx_limits(struct efx_nic *efx)
-{
-	struct efx_farch_filter_state *state = efx->filter_state;
-	struct efx_farch_filter_table *table;
-	efx_oword_t tx_cfg;
-
-	efx_reado(efx, &tx_cfg, FR_AZ_TX_CFG);
-
-	table = &state->table[EFX_FARCH_FILTER_TABLE_TX_MAC];
-	if (table->size) {
-		EFX_SET_OWORD_FIELD(
-			tx_cfg, FRF_CZ_TX_ETH_FILTER_FULL_SEARCH_RANGE,
-			table->search_limit[EFX_FARCH_FILTER_MAC_FULL] +
-			EFX_FARCH_FILTER_CTL_SRCH_FUDGE_FULL);
-		EFX_SET_OWORD_FIELD(
-			tx_cfg, FRF_CZ_TX_ETH_FILTER_WILD_SEARCH_RANGE,
-			table->search_limit[EFX_FARCH_FILTER_MAC_WILD] +
-			EFX_FARCH_FILTER_CTL_SRCH_FUDGE_WILD);
-	}
-
-	efx_writeo(efx, &tx_cfg, FR_AZ_TX_CFG);
-}
-
-static int
-efx_farch_filter_from_gen_spec(struct efx_farch_filter_spec *spec,
-			       const struct efx_filter_spec *gen_spec)
-{
-	bool is_full = false;
-
-	if ((gen_spec->flags & EFX_FILTER_FLAG_RX_RSS) &&
-	    gen_spec->rss_context != EFX_FILTER_RSS_CONTEXT_DEFAULT)
-		return -EINVAL;
-
-	spec->priority = gen_spec->priority;
-	spec->flags = gen_spec->flags;
-	spec->dmaq_id = gen_spec->dmaq_id;
-
-	switch (gen_spec->match_flags) {
-	case (EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_IP_PROTO |
-	      EFX_FILTER_MATCH_LOC_HOST | EFX_FILTER_MATCH_LOC_PORT |
-	      EFX_FILTER_MATCH_REM_HOST | EFX_FILTER_MATCH_REM_PORT):
-		is_full = true;
-		/* fall through */
-	case (EFX_FILTER_MATCH_ETHER_TYPE | EFX_FILTER_MATCH_IP_PROTO |
-	      EFX_FILTER_MATCH_LOC_HOST | EFX_FILTER_MATCH_LOC_PORT): {
-		__be32 rhost, host1, host2;
-		__be16 rport, port1, port2;
-
-		EFX_BUG_ON_PARANOID(!(gen_spec->flags & EFX_FILTER_FLAG_RX));
-
-		if (gen_spec->ether_type != htons(ETH_P_IP))
-			return -EPROTONOSUPPORT;
-		if (gen_spec->loc_port == 0 ||
-		    (is_full && gen_spec->rem_port == 0))
-			return -EADDRNOTAVAIL;
-		switch (gen_spec->ip_proto) {
-		case IPPROTO_TCP:
-			spec->type = (is_full ? EFX_FARCH_FILTER_TCP_FULL :
-				      EFX_FARCH_FILTER_TCP_WILD);
-			break;
-		case IPPROTO_UDP:
-			spec->type = (is_full ? EFX_FARCH_FILTER_UDP_FULL :
-				      EFX_FARCH_FILTER_UDP_WILD);
-			break;
-		default:
-			return -EPROTONOSUPPORT;
-		}
-
-		/* Filter is constructed in terms of source and destination,
-		 * with the odd wrinkle that the ports are swapped in a UDP
-		 * wildcard filter.  We need to convert from local and remote
-		 * (= zero for wildcard) addresses.
-		 */
-		rhost = is_full ? gen_spec->rem_host[0] : 0;
-		rport = is_full ? gen_spec->rem_port : 0;
-		host1 = rhost;
-		host2 = gen_spec->loc_host[0];
-		if (!is_full && gen_spec->ip_proto == IPPROTO_UDP) {
-			port1 = gen_spec->loc_port;
-			port2 = rport;
-		} else {
-			port1 = rport;
-			port2 = gen_spec->loc_port;
-		}
-		spec->data[0] = ntohl(host1) << 16 | ntohs(port1);
-		spec->data[1] = ntohs(port2) << 16 | ntohl(host1) >> 16;
-		spec->data[2] = ntohl(host2);
-
-		break;
-	}
-
-	case EFX_FILTER_MATCH_LOC_MAC | EFX_FILTER_MATCH_OUTER_VID:
-		is_full = true;
-		/* fall through */
-	case EFX_FILTER_MATCH_LOC_MAC:
-		spec->type = (is_full ? EFX_FARCH_FILTER_MAC_FULL :
-			      EFX_FARCH_FILTER_MAC_WILD);
-		spec->data[0] = is_full ? ntohs(gen_spec->outer_vid) : 0;
-		spec->data[1] = (gen_spec->loc_mac[2] << 24 |
-				 gen_spec->loc_mac[3] << 16 |
-				 gen_spec->loc_mac[4] << 8 |
-				 gen_spec->loc_mac[5]);
-		spec->data[2] = (gen_spec->loc_mac[0] << 8 |
-				 gen_spec->loc_mac[1]);
-		break;
-
-	case EFX_FILTER_MATCH_LOC_MAC_IG:
-		spec->type = (is_multicast_ether_addr(gen_spec->loc_mac) ?
-			      EFX_FARCH_FILTER_MC_DEF :
-			      EFX_FARCH_FILTER_UC_DEF);
-		memset(spec->data, 0, sizeof(spec->data)); /* ensure equality */
-		break;
-
-	default:
-		return -EPROTONOSUPPORT;
-	}
-
-	return 0;
-}
-
-static void
-efx_farch_filter_to_gen_spec(struct efx_filter_spec *gen_spec,
-			     const struct efx_farch_filter_spec *spec)
-{
-	bool is_full = false;
-
-	/* *gen_spec should be completely initialised, to be consistent
-	 * with efx_filter_init_{rx,tx}() and in case we want to copy
-	 * it back to userland.
-	 */
-	memset(gen_spec, 0, sizeof(*gen_spec));
-
-	gen_spec->priority = spec->priority;
-	gen_spec->flags = spec->flags;
-	gen_spec->dmaq_id = spec->dmaq_id;
-
-	switch (spec->type) {
-	case EFX_FARCH_FILTER_TCP_FULL:
-	case EFX_FARCH_FILTER_UDP_FULL:
-		is_full = true;
-		/* fall through */
-	case EFX_FARCH_FILTER_TCP_WILD:
-	case EFX_FARCH_FILTER_UDP_WILD: {
-		__be32 host1, host2;
-		__be16 port1, port2;
-
-		gen_spec->match_flags =
-			EFX_FILTER_MATCH_ETHER_TYPE |
-			EFX_FILTER_MATCH_IP_PROTO |
-			EFX_FILTER_MATCH_LOC_HOST | EFX_FILTER_MATCH_LOC_PORT;
-		if (is_full)
-			gen_spec->match_flags |= (EFX_FILTER_MATCH_REM_HOST |
-						  EFX_FILTER_MATCH_REM_PORT);
-		gen_spec->ether_type = htons(ETH_P_IP);
-		gen_spec->ip_proto =
-			(spec->type == EFX_FARCH_FILTER_TCP_FULL ||
-			 spec->type == EFX_FARCH_FILTER_TCP_WILD) ?
-			IPPROTO_TCP : IPPROTO_UDP;
-
-		host1 = htonl(spec->data[0] >> 16 | spec->data[1] << 16);
-		port1 = htons(spec->data[0]);
-		host2 = htonl(spec->data[2]);
-		port2 = htons(spec->data[1] >> 16);
-		if (spec->flags & EFX_FILTER_FLAG_TX) {
-			gen_spec->loc_host[0] = host1;
-			gen_spec->rem_host[0] = host2;
-		} else {
-			gen_spec->loc_host[0] = host2;
-			gen_spec->rem_host[0] = host1;
-		}
-		if (!!(gen_spec->flags & EFX_FILTER_FLAG_TX) ^
-		    (!is_full && gen_spec->ip_proto == IPPROTO_UDP)) {
-			gen_spec->loc_port = port1;
-			gen_spec->rem_port = port2;
-		} else {
-			gen_spec->loc_port = port2;
-			gen_spec->rem_port = port1;
-		}
-
-		break;
-	}
-
-	case EFX_FARCH_FILTER_MAC_FULL:
-		is_full = true;
-		/* fall through */
-	case EFX_FARCH_FILTER_MAC_WILD:
-		gen_spec->match_flags = EFX_FILTER_MATCH_LOC_MAC;
-		if (is_full)
-			gen_spec->match_flags |= EFX_FILTER_MATCH_OUTER_VID;
-		gen_spec->loc_mac[0] = spec->data[2] >> 8;
-		gen_spec->loc_mac[1] = spec->data[2];
-		gen_spec->loc_mac[2] = spec->data[1] >> 24;
-		gen_spec->loc_mac[3] = spec->data[1] >> 16;
-		gen_spec->loc_mac[4] = spec->data[1] >> 8;
-		gen_spec->loc_mac[5] = spec->data[1];
-		gen_spec->outer_vid = htons(spec->data[0]);
-		break;
-
-	case EFX_FARCH_FILTER_UC_DEF:
-	case EFX_FARCH_FILTER_MC_DEF:
-		gen_spec->match_flags = EFX_FILTER_MATCH_LOC_MAC_IG;
-		gen_spec->loc_mac[0] = spec->type == EFX_FARCH_FILTER_MC_DEF;
-		break;
-
-	default:
-		WARN_ON(1);
-		break;
-	}
-}
-
-static void
-efx_farch_filter_reset_rx_def(struct efx_nic *efx, unsigned filter_idx)
-{
-	struct efx_farch_filter_state *state = efx->filter_state;
-	struct efx_farch_filter_table *table =
-		&state->table[EFX_FARCH_FILTER_TABLE_RX_DEF];
-	struct efx_farch_filter_spec *spec = &table->spec[filter_idx];
-
-	/* If there's only one channel then disable RSS for non VF
-	 * traffic, thereby allowing VFs to use RSS when the PF can't.
-	 */
-	spec->type = EFX_FARCH_FILTER_UC_DEF + filter_idx;
-	spec->priority = EFX_FILTER_PRI_MANUAL;
-	spec->flags = (EFX_FILTER_FLAG_RX |
-		       (efx->n_rx_channels > 1 ? EFX_FILTER_FLAG_RX_RSS : 0) |
-		       (efx->rx_scatter ? EFX_FILTER_FLAG_RX_SCATTER : 0));
-	spec->dmaq_id = 0;
-	table->used_bitmap[0] |= 1 << filter_idx;
-}
-
-/* Build a filter entry and return its n-tuple key. */
-static u32 efx_farch_filter_build(efx_oword_t *filter,
-				  struct efx_farch_filter_spec *spec)
-{
-	u32 data3;
-
-	switch (efx_farch_filter_spec_table_id(spec)) {
-	case EFX_FARCH_FILTER_TABLE_RX_IP: {
-		bool is_udp = (spec->type == EFX_FARCH_FILTER_UDP_FULL ||
-			       spec->type == EFX_FARCH_FILTER_UDP_WILD);
-		EFX_POPULATE_OWORD_7(
-			*filter,
-			FRF_BZ_RSS_EN,
-			!!(spec->flags & EFX_FILTER_FLAG_RX_RSS),
-			FRF_BZ_SCATTER_EN,
-			!!(spec->flags & EFX_FILTER_FLAG_RX_SCATTER),
-			FRF_BZ_TCP_UDP, is_udp,
-			FRF_BZ_RXQ_ID, spec->dmaq_id,
-			EFX_DWORD_2, spec->data[2],
-			EFX_DWORD_1, spec->data[1],
-			EFX_DWORD_0, spec->data[0]);
-		data3 = is_udp;
-		break;
-	}
-
-	case EFX_FARCH_FILTER_TABLE_RX_MAC: {
-		bool is_wild = spec->type == EFX_FARCH_FILTER_MAC_WILD;
-		EFX_POPULATE_OWORD_7(
-			*filter,
-			FRF_CZ_RMFT_RSS_EN,
-			!!(spec->flags & EFX_FILTER_FLAG_RX_RSS),
-			FRF_CZ_RMFT_SCATTER_EN,
-			!!(spec->flags & EFX_FILTER_FLAG_RX_SCATTER),
-			FRF_CZ_RMFT_RXQ_ID, spec->dmaq_id,
-			FRF_CZ_RMFT_WILDCARD_MATCH, is_wild,
-			FRF_CZ_RMFT_DEST_MAC_HI, spec->data[2],
-			FRF_CZ_RMFT_DEST_MAC_LO, spec->data[1],
-			FRF_CZ_RMFT_VLAN_ID, spec->data[0]);
-		data3 = is_wild;
-		break;
-	}
-
-	case EFX_FARCH_FILTER_TABLE_TX_MAC: {
-		bool is_wild = spec->type == EFX_FARCH_FILTER_MAC_WILD;
-		EFX_POPULATE_OWORD_5(*filter,
-				     FRF_CZ_TMFT_TXQ_ID, spec->dmaq_id,
-				     FRF_CZ_TMFT_WILDCARD_MATCH, is_wild,
-				     FRF_CZ_TMFT_SRC_MAC_HI, spec->data[2],
-				     FRF_CZ_TMFT_SRC_MAC_LO, spec->data[1],
-				     FRF_CZ_TMFT_VLAN_ID, spec->data[0]);
-		data3 = is_wild | spec->dmaq_id << 1;
-		break;
-	}
-
-	default:
-		BUG();
-	}
-
-	return spec->data[0] ^ spec->data[1] ^ spec->data[2] ^ data3;
-}
-
-static bool efx_farch_filter_equal(const struct efx_farch_filter_spec *left,
-				   const struct efx_farch_filter_spec *right)
-{
-	if (left->type != right->type ||
-	    memcmp(left->data, right->data, sizeof(left->data)))
-		return false;
-
-	if (left->flags & EFX_FILTER_FLAG_TX &&
-	    left->dmaq_id != right->dmaq_id)
-		return false;
-
-	return true;
-}
-
-/*
- * Construct/deconstruct external filter IDs.  At least the RX filter
- * IDs must be ordered by matching priority, for RX NFC semantics.
- *
- * Deconstruction needs to be robust against invalid IDs so that
- * efx_filter_remove_id_safe() and efx_filter_get_filter_safe() can
- * accept user-provided IDs.
- */
-
-#define EFX_FARCH_FILTER_MATCH_PRI_COUNT	5
-
-static const u8 efx_farch_filter_type_match_pri[EFX_FARCH_FILTER_TYPE_COUNT] = {
-	[EFX_FARCH_FILTER_TCP_FULL]	= 0,
-	[EFX_FARCH_FILTER_UDP_FULL]	= 0,
-	[EFX_FARCH_FILTER_TCP_WILD]	= 1,
-	[EFX_FARCH_FILTER_UDP_WILD]	= 1,
-	[EFX_FARCH_FILTER_MAC_FULL]	= 2,
-	[EFX_FARCH_FILTER_MAC_WILD]	= 3,
-	[EFX_FARCH_FILTER_UC_DEF]	= 4,
-	[EFX_FARCH_FILTER_MC_DEF]	= 4,
-};
-
-static const enum efx_farch_filter_table_id efx_farch_filter_range_table[] = {
-	EFX_FARCH_FILTER_TABLE_RX_IP,	/* RX match pri 0 */
-	EFX_FARCH_FILTER_TABLE_RX_IP,
-	EFX_FARCH_FILTER_TABLE_RX_MAC,
-	EFX_FARCH_FILTER_TABLE_RX_MAC,
-	EFX_FARCH_FILTER_TABLE_RX_DEF,	/* RX match pri 4 */
-	EFX_FARCH_FILTER_TABLE_TX_MAC,	/* TX match pri 0 */
-	EFX_FARCH_FILTER_TABLE_TX_MAC,	/* TX match pri 1 */
-};
-
-#define EFX_FARCH_FILTER_INDEX_WIDTH 13
-#define EFX_FARCH_FILTER_INDEX_MASK ((1 << EFX_FARCH_FILTER_INDEX_WIDTH) - 1)
-
-static inline u32
-efx_farch_filter_make_id(const struct efx_farch_filter_spec *spec,
-			 unsigned int index)
-{
-	unsigned int range;
-
-	range = efx_farch_filter_type_match_pri[spec->type];
-	if (!(spec->flags & EFX_FILTER_FLAG_RX))
-		range += EFX_FARCH_FILTER_MATCH_PRI_COUNT;
-
-	return range << EFX_FARCH_FILTER_INDEX_WIDTH | index;
-}
-
-static inline enum efx_farch_filter_table_id
-efx_farch_filter_id_table_id(u32 id)
-{
-	unsigned int range = id >> EFX_FARCH_FILTER_INDEX_WIDTH;
-
-	if (range < ARRAY_SIZE(efx_farch_filter_range_table))
-		return efx_farch_filter_range_table[range];
-	else
-		return EFX_FARCH_FILTER_TABLE_COUNT; /* invalid */
-}
-
-static inline unsigned int efx_farch_filter_id_index(u32 id)
-{
-	return id & EFX_FARCH_FILTER_INDEX_MASK;
-}
-
-u32 efx_filter_get_rx_id_limit(struct efx_nic *efx)
-{
-	struct efx_farch_filter_state *state = efx->filter_state;
-	unsigned int range = EFX_FARCH_FILTER_MATCH_PRI_COUNT - 1;
-	enum efx_farch_filter_table_id table_id;
-
-	do {
-		table_id = efx_farch_filter_range_table[range];
-		if (state->table[table_id].size != 0)
-			return range << EFX_FARCH_FILTER_INDEX_WIDTH |
-				state->table[table_id].size;
-	} while (range--);
-
-	return 0;
-}
-
-/**
- * efx_filter_insert_filter - add or replace a filter
- * @efx: NIC in which to insert the filter
- * @spec: Specification for the filter
- * @replace_equal: Flag for whether the specified filter may replace an
- *	existing filter with equal priority
- *
- * On success, return the filter ID.
- * On failure, return a negative error code.
- *
- * If an existing filter has equal match values to the new filter
- * spec, then the new filter might replace it, depending on the
- * relative priorities.  If the existing filter has lower priority, or
- * if @replace_equal is set and it has equal priority, then it is
- * replaced.  Otherwise the function fails, returning -%EPERM if
- * the existing filter has higher priority or -%EEXIST if it has
- * equal priority.
- */
-s32 efx_filter_insert_filter(struct efx_nic *efx,
-			     struct efx_filter_spec *gen_spec,
-			     bool replace_equal)
-{
-	struct efx_farch_filter_state *state = efx->filter_state;
-	struct efx_farch_filter_table *table;
-	struct efx_farch_filter_spec spec;
-	efx_oword_t filter;
-	int rep_index, ins_index;
-	unsigned int depth = 0;
-	int rc;
-
-	rc = efx_farch_filter_from_gen_spec(&spec, gen_spec);
-	if (rc)
-		return rc;
-
-	table = &state->table[efx_farch_filter_spec_table_id(&spec)];
-	if (table->size == 0)
-		return -EINVAL;
-
-	netif_vdbg(efx, hw, efx->net_dev,
-		   "%s: type %d search_limit=%d", __func__, spec.type,
-		   table->search_limit[spec.type]);
-
-	if (table->id == EFX_FARCH_FILTER_TABLE_RX_DEF) {
-		/* One filter spec per type */
-		BUILD_BUG_ON(EFX_FARCH_FILTER_INDEX_UC_DEF != 0);
-		BUILD_BUG_ON(EFX_FARCH_FILTER_INDEX_MC_DEF !=
-			     EFX_FARCH_FILTER_MC_DEF - EFX_FARCH_FILTER_UC_DEF);
-		rep_index = spec.type - EFX_FARCH_FILTER_UC_DEF;
-		ins_index = rep_index;
-
-		spin_lock_bh(&efx->filter_lock);
-	} else {
-		/* Search concurrently for
-		 * (1) a filter to be replaced (rep_index): any filter
-		 *     with the same match values, up to the current
-		 *     search depth for this type, and
-		 * (2) the insertion point (ins_index): (1) or any
-		 *     free slot before it or up to the maximum search
-		 *     depth for this priority
-		 * We fail if we cannot find (2).
-		 *
-		 * We can stop once either
-		 * (a) we find (1), in which case we have definitely
-		 *     found (2) as well; or
-		 * (b) we have searched exhaustively for (1), and have
-		 *     either found (2) or searched exhaustively for it
-		 */
-		u32 key = efx_farch_filter_build(&filter, &spec);
-		unsigned int hash = efx_farch_filter_hash(key);
-		unsigned int incr = efx_farch_filter_increment(key);
-		unsigned int max_rep_depth = table->search_limit[spec.type];
-		unsigned int max_ins_depth =
-			spec.priority <= EFX_FILTER_PRI_HINT ?
-			EFX_FARCH_FILTER_CTL_SRCH_HINT_MAX :
-			EFX_FARCH_FILTER_CTL_SRCH_MAX;
-		unsigned int i = hash & (table->size - 1);
-
-		ins_index = -1;
-		depth = 1;
-
-		spin_lock_bh(&efx->filter_lock);
-
-		for (;;) {
-			if (!test_bit(i, table->used_bitmap)) {
-				if (ins_index < 0)
-					ins_index = i;
-			} else if (efx_farch_filter_equal(&spec,
-							  &table->spec[i])) {
-				/* Case (a) */
-				if (ins_index < 0)
-					ins_index = i;
-				rep_index = i;
-				break;
-			}
-
-			if (depth >= max_rep_depth &&
-			    (ins_index >= 0 || depth >= max_ins_depth)) {
-				/* Case (b) */
-				if (ins_index < 0) {
-					rc = -EBUSY;
-					goto out;
-				}
-				rep_index = -1;
-				break;
-			}
-
-			i = (i + incr) & (table->size - 1);
-			++depth;
-		}
-	}
-
-	/* If we found a filter to be replaced, check whether we
-	 * should do so
-	 */
-	if (rep_index >= 0) {
-		struct efx_farch_filter_spec *saved_spec =
-			&table->spec[rep_index];
-
-		if (spec.priority == saved_spec->priority && !replace_equal) {
-			rc = -EEXIST;
-			goto out;
-		}
-		if (spec.priority < saved_spec->priority) {
-			rc = -EPERM;
-			goto out;
-		}
-	}
-
-	/* Insert the filter */
-	if (ins_index != rep_index) {
-		__set_bit(ins_index, table->used_bitmap);
-		++table->used;
-	}
-	table->spec[ins_index] = spec;
-
-	if (table->id == EFX_FARCH_FILTER_TABLE_RX_DEF) {
-		efx_farch_filter_push_rx_config(efx);
-	} else {
-		if (table->search_limit[spec.type] < depth) {
-			table->search_limit[spec.type] = depth;
-			if (spec.flags & EFX_FILTER_FLAG_TX)
-				efx_farch_filter_push_tx_limits(efx);
-			else
-				efx_farch_filter_push_rx_config(efx);
-		}
-
-		efx_writeo(efx, &filter,
-			   table->offset + table->step * ins_index);
-
-		/* If we were able to replace a filter by inserting
-		 * at a lower depth, clear the replaced filter
-		 */
-		if (ins_index != rep_index && rep_index >= 0)
-			efx_farch_filter_table_clear_entry(efx, table,
-							   rep_index);
-	}
-
-	netif_vdbg(efx, hw, efx->net_dev,
-		   "%s: filter type %d index %d rxq %u set",
-		   __func__, spec.type, ins_index, spec.dmaq_id);
-	rc = efx_farch_filter_make_id(&spec, ins_index);
-
-out:
-	spin_unlock_bh(&efx->filter_lock);
-	return rc;
-}
-
-static void
-efx_farch_filter_table_clear_entry(struct efx_nic *efx,
-				   struct efx_farch_filter_table *table,
-				   unsigned int filter_idx)
-{
-	static efx_oword_t filter;
-
-	if (table->id == EFX_FARCH_FILTER_TABLE_RX_DEF) {
-		/* RX default filters must always exist */
-		efx_farch_filter_reset_rx_def(efx, filter_idx);
-		efx_farch_filter_push_rx_config(efx);
-	} else if (test_bit(filter_idx, table->used_bitmap)) {
-		__clear_bit(filter_idx, table->used_bitmap);
-		--table->used;
-		memset(&table->spec[filter_idx], 0, sizeof(table->spec[0]));
-
-		efx_writeo(efx, &filter,
-			   table->offset + table->step * filter_idx);
-
-		/* If this filter required a greater search depth than
-		 * any other, the search limit for its type can now be
-		 * decreased.  However, it is hard to determine that
-		 * unless the table has become completely empty - in
-		 * which case, all its search limits can be set to 0.
-		 */
-		if (unlikely(table->used == 0)) {
-			memset(table->search_limit, 0,
-			       sizeof(table->search_limit));
-			if (table->id == EFX_FARCH_FILTER_TABLE_TX_MAC)
-				efx_farch_filter_push_tx_limits(efx);
-			else
-				efx_farch_filter_push_rx_config(efx);
-		}
-	}
-}
-
-/**
- * efx_filter_remove_id_safe - remove a filter by ID, carefully
- * @efx: NIC from which to remove the filter
- * @priority: Priority of filter, as passed to @efx_filter_insert_filter
- * @filter_id: ID of filter, as returned by @efx_filter_insert_filter
- *
- * This function will range-check @filter_id, so it is safe to call
- * with a value passed from userland.
- */
-int efx_filter_remove_id_safe(struct efx_nic *efx,
-			      enum efx_filter_priority priority,
-			      u32 filter_id)
-{
-	struct efx_farch_filter_state *state = efx->filter_state;
-	enum efx_farch_filter_table_id table_id;
-	struct efx_farch_filter_table *table;
-	unsigned int filter_idx;
-	struct efx_farch_filter_spec *spec;
-	int rc;
-
-	table_id = efx_farch_filter_id_table_id(filter_id);
-	if ((unsigned int)table_id >= EFX_FARCH_FILTER_TABLE_COUNT)
-		return -ENOENT;
-	table = &state->table[table_id];
-
-	filter_idx = efx_farch_filter_id_index(filter_id);
-	if (filter_idx >= table->size)
-		return -ENOENT;
-	spec = &table->spec[filter_idx];
-
-	spin_lock_bh(&efx->filter_lock);
-
-	if (test_bit(filter_idx, table->used_bitmap) &&
-	    spec->priority == priority) {
-		efx_farch_filter_table_clear_entry(efx, table, filter_idx);
-		rc = 0;
-	} else {
-		rc = -ENOENT;
-	}
-
-	spin_unlock_bh(&efx->filter_lock);
-
-	return rc;
-}
-
-/**
- * efx_filter_get_filter_safe - retrieve a filter by ID, carefully
- * @efx: NIC from which to remove the filter
- * @priority: Priority of filter, as passed to @efx_filter_insert_filter
- * @filter_id: ID of filter, as returned by @efx_filter_insert_filter
- * @spec: Buffer in which to store filter specification
- *
- * This function will range-check @filter_id, so it is safe to call
- * with a value passed from userland.
- */
-int efx_filter_get_filter_safe(struct efx_nic *efx,
-			       enum efx_filter_priority priority,
-			       u32 filter_id, struct efx_filter_spec *spec_buf)
-{
-	struct efx_farch_filter_state *state = efx->filter_state;
-	enum efx_farch_filter_table_id table_id;
-	struct efx_farch_filter_table *table;
-	struct efx_farch_filter_spec *spec;
-	unsigned int filter_idx;
-	int rc;
-
-	table_id = efx_farch_filter_id_table_id(filter_id);
-	if ((unsigned int)table_id >= EFX_FARCH_FILTER_TABLE_COUNT)
-		return -ENOENT;
-	table = &state->table[table_id];
-
-	filter_idx = efx_farch_filter_id_index(filter_id);
-	if (filter_idx >= table->size)
-		return -ENOENT;
-	spec = &table->spec[filter_idx];
-
-	spin_lock_bh(&efx->filter_lock);
-
-	if (test_bit(filter_idx, table->used_bitmap) &&
-	    spec->priority == priority) {
-		efx_farch_filter_to_gen_spec(spec_buf, spec);
-		rc = 0;
-	} else {
-		rc = -ENOENT;
-	}
-
-	spin_unlock_bh(&efx->filter_lock);
-
-	return rc;
-}
-
-static void
-efx_farch_filter_table_clear(struct efx_nic *efx,
-			     enum efx_farch_filter_table_id table_id,
-			     enum efx_filter_priority priority)
-{
-	struct efx_farch_filter_state *state = efx->filter_state;
-	struct efx_farch_filter_table *table = &state->table[table_id];
-	unsigned int filter_idx;
-
-	spin_lock_bh(&efx->filter_lock);
-	for (filter_idx = 0; filter_idx < table->size; ++filter_idx)
-		if (table->spec[filter_idx].priority <= priority)
-			efx_farch_filter_table_clear_entry(efx, table,
-							   filter_idx);
-	spin_unlock_bh(&efx->filter_lock);
-}
-
-/**
- * efx_filter_clear_rx - remove RX filters by priority
- * @efx: NIC from which to remove the filters
- * @priority: Maximum priority to remove
- */
-void efx_filter_clear_rx(struct efx_nic *efx, enum efx_filter_priority priority)
-{
-	efx_farch_filter_table_clear(efx, EFX_FARCH_FILTER_TABLE_RX_IP,
-				     priority);
-	efx_farch_filter_table_clear(efx, EFX_FARCH_FILTER_TABLE_RX_MAC,
-				     priority);
-}
-
-u32 efx_filter_count_rx_used(struct efx_nic *efx,
-			     enum efx_filter_priority priority)
-{
-	struct efx_farch_filter_state *state = efx->filter_state;
-	enum efx_farch_filter_table_id table_id;
-	struct efx_farch_filter_table *table;
-	unsigned int filter_idx;
-	u32 count = 0;
-
-	spin_lock_bh(&efx->filter_lock);
-
-	for (table_id = EFX_FARCH_FILTER_TABLE_RX_IP;
-	     table_id <= EFX_FARCH_FILTER_TABLE_RX_DEF;
-	     table_id++) {
-		table = &state->table[table_id];
-		for (filter_idx = 0; filter_idx < table->size; filter_idx++) {
-			if (test_bit(filter_idx, table->used_bitmap) &&
-			    table->spec[filter_idx].priority == priority)
-				++count;
-		}
-	}
-
-	spin_unlock_bh(&efx->filter_lock);
-
-	return count;
-}
-
-s32 efx_filter_get_rx_ids(struct efx_nic *efx,
-			  enum efx_filter_priority priority,
-			  u32 *buf, u32 size)
-{
-	struct efx_farch_filter_state *state = efx->filter_state;
-	enum efx_farch_filter_table_id table_id;
-	struct efx_farch_filter_table *table;
-	unsigned int filter_idx;
-	s32 count = 0;
-
-	spin_lock_bh(&efx->filter_lock);
-
-	for (table_id = EFX_FARCH_FILTER_TABLE_RX_IP;
-	     table_id <= EFX_FARCH_FILTER_TABLE_RX_DEF;
-	     table_id++) {
-		table = &state->table[table_id];
-		for (filter_idx = 0; filter_idx < table->size; filter_idx++) {
-			if (test_bit(filter_idx, table->used_bitmap) &&
-			    table->spec[filter_idx].priority == priority) {
-				if (count == size) {
-					count = -EMSGSIZE;
-					goto out;
-				}
-				buf[count++] = efx_farch_filter_make_id(
-					&table->spec[filter_idx], filter_idx);
-			}
-		}
-	}
-out:
-	spin_unlock_bh(&efx->filter_lock);
-
-	return count;
-}
-
-/* Restore filter stater after reset */
-void efx_restore_filters(struct efx_nic *efx)
-{
-	struct efx_farch_filter_state *state = efx->filter_state;
-	enum efx_farch_filter_table_id table_id;
-	struct efx_farch_filter_table *table;
-	efx_oword_t filter;
-	unsigned int filter_idx;
-
-	spin_lock_bh(&efx->filter_lock);
-
-	for (table_id = 0; table_id < EFX_FARCH_FILTER_TABLE_COUNT; table_id++) {
-		table = &state->table[table_id];
-
-		/* Check whether this is a regular register table */
-		if (table->step == 0)
-			continue;
-
-		for (filter_idx = 0; filter_idx < table->size; filter_idx++) {
-			if (!test_bit(filter_idx, table->used_bitmap))
-				continue;
-			efx_farch_filter_build(&filter, &table->spec[filter_idx]);
-			efx_writeo(efx, &filter,
-				   table->offset + table->step * filter_idx);
-		}
-	}
-
-	efx_farch_filter_push_rx_config(efx);
-	efx_farch_filter_push_tx_limits(efx);
-
-	spin_unlock_bh(&efx->filter_lock);
-}
-
-int efx_probe_filters(struct efx_nic *efx)
-{
-	struct efx_farch_filter_state *state;
-	struct efx_farch_filter_table *table;
-	unsigned table_id;
-
-	state = kzalloc(sizeof(struct efx_farch_filter_state), GFP_KERNEL);
-	if (!state)
-		return -ENOMEM;
-	efx->filter_state = state;
-
-	spin_lock_init(&efx->filter_lock);
-
-	if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0) {
-#ifdef CONFIG_RFS_ACCEL
-		efx->rps_flow_id = kcalloc(FR_BZ_RX_FILTER_TBL0_ROWS,
-					   sizeof(*efx->rps_flow_id),
-					   GFP_KERNEL);
-		if (!efx->rps_flow_id)
-			goto fail;
-#endif
-		table = &state->table[EFX_FARCH_FILTER_TABLE_RX_IP];
-		table->id = EFX_FARCH_FILTER_TABLE_RX_IP;
-		table->offset = FR_BZ_RX_FILTER_TBL0;
-		table->size = FR_BZ_RX_FILTER_TBL0_ROWS;
-		table->step = FR_BZ_RX_FILTER_TBL0_STEP;
-	}
-
-	if (efx_nic_rev(efx) >= EFX_REV_SIENA_A0) {
-		table = &state->table[EFX_FARCH_FILTER_TABLE_RX_MAC];
-		table->id = EFX_FARCH_FILTER_TABLE_RX_MAC;
-		table->offset = FR_CZ_RX_MAC_FILTER_TBL0;
-		table->size = FR_CZ_RX_MAC_FILTER_TBL0_ROWS;
-		table->step = FR_CZ_RX_MAC_FILTER_TBL0_STEP;
-
-		table = &state->table[EFX_FARCH_FILTER_TABLE_RX_DEF];
-		table->id = EFX_FARCH_FILTER_TABLE_RX_DEF;
-		table->size = EFX_FARCH_FILTER_SIZE_RX_DEF;
-
-		table = &state->table[EFX_FARCH_FILTER_TABLE_TX_MAC];
-		table->id = EFX_FARCH_FILTER_TABLE_TX_MAC;
-		table->offset = FR_CZ_TX_MAC_FILTER_TBL0;
-		table->size = FR_CZ_TX_MAC_FILTER_TBL0_ROWS;
-		table->step = FR_CZ_TX_MAC_FILTER_TBL0_STEP;
-	}
-
-	for (table_id = 0; table_id < EFX_FARCH_FILTER_TABLE_COUNT; table_id++) {
-		table = &state->table[table_id];
-		if (table->size == 0)
-			continue;
-		table->used_bitmap = kcalloc(BITS_TO_LONGS(table->size),
-					     sizeof(unsigned long),
-					     GFP_KERNEL);
-		if (!table->used_bitmap)
-			goto fail;
-		table->spec = vzalloc(table->size * sizeof(*table->spec));
-		if (!table->spec)
-			goto fail;
-	}
-
-	if (state->table[EFX_FARCH_FILTER_TABLE_RX_DEF].size) {
-		/* RX default filters must always exist */
-		unsigned i;
-		for (i = 0; i < EFX_FARCH_FILTER_SIZE_RX_DEF; i++)
-			efx_farch_filter_reset_rx_def(efx, i);
-	}
-
-	efx_farch_filter_push_rx_config(efx);
-
-	return 0;
-
-fail:
-	efx_remove_filters(efx);
-	return -ENOMEM;
-}
-
-void efx_remove_filters(struct efx_nic *efx)
-{
-	struct efx_farch_filter_state *state = efx->filter_state;
-	enum efx_farch_filter_table_id table_id;
-
-	for (table_id = 0; table_id < EFX_FARCH_FILTER_TABLE_COUNT; table_id++) {
-		kfree(state->table[table_id].used_bitmap);
-		vfree(state->table[table_id].spec);
-	}
-#ifdef CONFIG_RFS_ACCEL
-	kfree(efx->rps_flow_id);
-#endif
-	kfree(state);
-}
-
-/* Update scatter enable flags for filters pointing to our own RX queues */
-void efx_filter_update_rx_scatter(struct efx_nic *efx)
-{
-	struct efx_farch_filter_state *state = efx->filter_state;
-	enum efx_farch_filter_table_id table_id;
-	struct efx_farch_filter_table *table;
-	efx_oword_t filter;
-	unsigned int filter_idx;
-
-	spin_lock_bh(&efx->filter_lock);
-
-	for (table_id = EFX_FARCH_FILTER_TABLE_RX_IP;
-	     table_id <= EFX_FARCH_FILTER_TABLE_RX_DEF;
-	     table_id++) {
-		table = &state->table[table_id];
-
-		for (filter_idx = 0; filter_idx < table->size; filter_idx++) {
-			if (!test_bit(filter_idx, table->used_bitmap) ||
-			    table->spec[filter_idx].dmaq_id >=
-			    efx->n_rx_channels)
-				continue;
-
-			if (efx->rx_scatter)
-				table->spec[filter_idx].flags |=
-					EFX_FILTER_FLAG_RX_SCATTER;
-			else
-				table->spec[filter_idx].flags &=
-					~EFX_FILTER_FLAG_RX_SCATTER;
-
-			if (table_id == EFX_FARCH_FILTER_TABLE_RX_DEF)
-				/* Pushed by efx_farch_filter_push_rx_config() */
-				continue;
-
-			efx_farch_filter_build(&filter, &table->spec[filter_idx]);
-			efx_writeo(efx, &filter,
-				   table->offset + table->step * filter_idx);
-		}
-	}
-
-	efx_farch_filter_push_rx_config(efx);
-
-	spin_unlock_bh(&efx->filter_lock);
-}
-
-#ifdef CONFIG_RFS_ACCEL
-
-int efx_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
-		   u16 rxq_index, u32 flow_id)
-{
-	struct efx_nic *efx = netdev_priv(net_dev);
-	struct efx_channel *channel;
-	struct efx_filter_spec spec;
-	const struct iphdr *ip;
-	const __be16 *ports;
-	int nhoff;
-	int rc;
-
-	nhoff = skb_network_offset(skb);
-
-	if (skb->protocol == htons(ETH_P_8021Q)) {
-		EFX_BUG_ON_PARANOID(skb_headlen(skb) <
-				    nhoff + sizeof(struct vlan_hdr));
-		if (((const struct vlan_hdr *)skb->data + nhoff)->
-		    h_vlan_encapsulated_proto != htons(ETH_P_IP))
-			return -EPROTONOSUPPORT;
-
-		/* This is IP over 802.1q VLAN.  We can't filter on the
-		 * IP 5-tuple and the vlan together, so just strip the
-		 * vlan header and filter on the IP part.
-		 */
-		nhoff += sizeof(struct vlan_hdr);
-	} else if (skb->protocol != htons(ETH_P_IP)) {
-		return -EPROTONOSUPPORT;
-	}
-
-	/* RFS must validate the IP header length before calling us */
-	EFX_BUG_ON_PARANOID(skb_headlen(skb) < nhoff + sizeof(*ip));
-	ip = (const struct iphdr *)(skb->data + nhoff);
-	if (ip_is_fragment(ip))
-		return -EPROTONOSUPPORT;
-	EFX_BUG_ON_PARANOID(skb_headlen(skb) < nhoff + 4 * ip->ihl + 4);
-	ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
-
-	efx_filter_init_rx(&spec, EFX_FILTER_PRI_HINT,
-			   efx->rx_scatter ? EFX_FILTER_FLAG_RX_SCATTER : 0,
-			   rxq_index);
-	rc = efx_filter_set_ipv4_full(&spec, ip->protocol,
-				      ip->daddr, ports[1], ip->saddr, ports[0]);
-	if (rc)
-		return rc;
-
-	rc = efx_filter_insert_filter(efx, &spec, true);
-	if (rc < 0)
-		return rc;
-
-	/* Remember this so we can check whether to expire the filter later */
-	efx->rps_flow_id[rc] = flow_id;
-	channel = efx_get_channel(efx, skb_get_rx_queue(skb));
-	++channel->rfs_filters_added;
-
-	netif_info(efx, rx_status, efx->net_dev,
-		   "steering %s %pI4:%u:%pI4:%u to queue %u [flow %u filter %d]\n",
-		   (ip->protocol == IPPROTO_TCP) ? "TCP" : "UDP",
-		   &ip->saddr, ntohs(ports[0]), &ip->daddr, ntohs(ports[1]),
-		   rxq_index, flow_id, rc);
-
-	return rc;
-}
-
-bool __efx_filter_rfs_expire(struct efx_nic *efx, unsigned quota)
-{
-	struct efx_farch_filter_state *state = efx->filter_state;
-	struct efx_farch_filter_table *table =
-		&state->table[EFX_FARCH_FILTER_TABLE_RX_IP];
-	unsigned mask = table->size - 1;
-	unsigned index;
-	unsigned stop;
-
-	if (!spin_trylock_bh(&efx->filter_lock))
-		return false;
-
-	index = efx->rps_expire_index;
-	stop = (index + quota) & mask;
-
-	while (index != stop) {
-		if (test_bit(index, table->used_bitmap) &&
-		    table->spec[index].priority == EFX_FILTER_PRI_HINT &&
-		    rps_may_expire_flow(efx->net_dev,
-					table->spec[index].dmaq_id,
-					efx->rps_flow_id[index], index)) {
-			netif_info(efx, rx_status, efx->net_dev,
-				   "expiring filter %d [flow %u]\n",
-				   index, efx->rps_flow_id[index]);
-			efx_farch_filter_table_clear_entry(efx, table, index);
-		}
-		index = (index + 1) & mask;
-	}
-
-	efx->rps_expire_index = stop;
-
-	spin_unlock_bh(&efx->filter_lock);
-	return true;
-}
-
-#endif /* CONFIG_RFS_ACCEL */
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index 5287a3c..d35ce14 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -30,6 +30,7 @@
 
 #include "enum.h"
 #include "bitfield.h"
+#include "filter.h"
 
 /**************************************************************************
  *
@@ -1025,6 +1026,24 @@ static inline unsigned int efx_port_num(struct efx_nic *efx)
  * @ev_process: Process events for a queue, up to the given NAPI quota
  * @ev_read_ack: Acknowledge read events on a queue, rearming its IRQ
  * @ev_test_generate: Generate a test event
+ * @filter_table_probe: Probe filter capabilities and set up filter software state
+ * @filter_table_restore: Restore filters removed from hardware
+ * @filter_table_remove: Remove filters from hardware and tear down software state
+ * @filter_update_rx_scatter: Update filters after change to rx scatter setting
+ * @filter_insert: add or replace a filter
+ * @filter_remove_safe: remove a filter by ID, carefully
+ * @filter_get_safe: retrieve a filter by ID, carefully
+ * @filter_clear_rx: remove RX filters by priority
+ * @filter_count_rx_used: Get the number of filters in use at a given priority
+ * @filter_get_rx_id_limit: Get maximum value of a filter id, plus 1
+ * @filter_get_rx_ids: Get list of RX filters at a given priority
+ * @filter_rfs_insert: Add or replace a filter for RFS.  This must be
+ *	atomic.  The hardware change may be asynchronous but should
+ *	not be delayed for long.  It may fail if this can't be done
+ *	atomically.
+ * @filter_rfs_expire_one: Consider expiring a filter inserted for RFS.
+ *	This must check whether the specified table entry is used by RFS
+ *	and that rps_may_expire_flow() returns true for it.
  * @revision: Hardware architecture revision
  * @txd_ptr_tbl_base: TX descriptor ring base address
  * @rxd_ptr_tbl_base: RX descriptor ring base address
@@ -1102,6 +1121,32 @@ struct efx_nic_type {
 	int (*ev_process)(struct efx_channel *channel, int quota);
 	void (*ev_read_ack)(struct efx_channel *channel);
 	void (*ev_test_generate)(struct efx_channel *channel);
+	int (*filter_table_probe)(struct efx_nic *efx);
+	void (*filter_table_restore)(struct efx_nic *efx);
+	void (*filter_table_remove)(struct efx_nic *efx);
+	void (*filter_update_rx_scatter)(struct efx_nic *efx);
+	s32 (*filter_insert)(struct efx_nic *efx,
+			     struct efx_filter_spec *spec, bool replace);
+	int (*filter_remove_safe)(struct efx_nic *efx,
+				  enum efx_filter_priority priority,
+				  u32 filter_id);
+	int (*filter_get_safe)(struct efx_nic *efx,
+			       enum efx_filter_priority priority,
+			       u32 filter_id, struct efx_filter_spec *);
+	void (*filter_clear_rx)(struct efx_nic *efx,
+				enum efx_filter_priority priority);
+	u32 (*filter_count_rx_used)(struct efx_nic *efx,
+				    enum efx_filter_priority priority);
+	u32 (*filter_get_rx_id_limit)(struct efx_nic *efx);
+	s32 (*filter_get_rx_ids)(struct efx_nic *efx,
+				 enum efx_filter_priority priority,
+				 u32 *buf, u32 size);
+#ifdef CONFIG_RFS_ACCEL
+	s32 (*filter_rfs_insert)(struct efx_nic *efx,
+				 struct efx_filter_spec *spec);
+	bool (*filter_rfs_expire_one)(struct efx_nic *efx, u32 flow_id,
+				      unsigned int index);
+#endif
 
 	int revision;
 	unsigned int txd_ptr_tbl_base;
@@ -1117,6 +1162,7 @@ struct efx_nic_type {
 	unsigned int timer_period_max;
 	netdev_features_t offload_features;
 	int mcdi_max_ver;
+	unsigned int max_rx_ip_filters;
 };
 
 /**************************************************************************
diff --git a/drivers/net/ethernet/sfc/nic.h b/drivers/net/ethernet/sfc/nic.h
index 25e25b6..69298c9 100644
--- a/drivers/net/ethernet/sfc/nic.h
+++ b/drivers/net/ethernet/sfc/nic.h
@@ -404,6 +404,34 @@ extern int efx_farch_ev_process(struct efx_channel *channel, int quota);
 extern void efx_farch_ev_read_ack(struct efx_channel *channel);
 extern void efx_farch_ev_test_generate(struct efx_channel *channel);
 
+/* Falcon/Siena filter operations */
+extern int efx_farch_filter_table_probe(struct efx_nic *efx);
+extern void efx_farch_filter_table_restore(struct efx_nic *efx);
+extern void efx_farch_filter_table_remove(struct efx_nic *efx);
+extern void efx_farch_filter_update_rx_scatter(struct efx_nic *efx);
+extern s32 efx_farch_filter_insert(struct efx_nic *efx,
+				   struct efx_filter_spec *spec, bool replace);
+extern int efx_farch_filter_remove_safe(struct efx_nic *efx,
+					enum efx_filter_priority priority,
+					u32 filter_id);
+extern int efx_farch_filter_get_safe(struct efx_nic *efx,
+				     enum efx_filter_priority priority,
+				     u32 filter_id, struct efx_filter_spec *);
+extern void efx_farch_filter_clear_rx(struct efx_nic *efx,
+				      enum efx_filter_priority priority);
+extern u32 efx_farch_filter_count_rx_used(struct efx_nic *efx,
+					  enum efx_filter_priority priority);
+extern u32 efx_farch_filter_get_rx_id_limit(struct efx_nic *efx);
+extern s32 efx_farch_filter_get_rx_ids(struct efx_nic *efx,
+				       enum efx_filter_priority priority,
+				       u32 *buf, u32 size);
+#ifdef CONFIG_RFS_ACCEL
+extern s32 efx_farch_filter_rfs_insert(struct efx_nic *efx,
+				       struct efx_filter_spec *spec);
+extern bool efx_farch_filter_rfs_expire_one(struct efx_nic *efx, u32 flow_id,
+					    unsigned int index);
+#endif
+
 extern bool efx_nic_event_present(struct efx_channel *channel);
 
 /* Some statistics are computed as A - B where A and B each increase
diff --git a/drivers/net/ethernet/sfc/rx.c b/drivers/net/ethernet/sfc/rx.c
index f2b78cd..1299092 100644
--- a/drivers/net/ethernet/sfc/rx.c
+++ b/drivers/net/ethernet/sfc/rx.c
@@ -21,6 +21,7 @@
 #include <net/checksum.h>
 #include "net_driver.h"
 #include "efx.h"
+#include "filter.h"
 #include "nic.h"
 #include "selftest.h"
 #include "workarounds.h"
@@ -802,3 +803,96 @@ module_param(rx_refill_threshold, uint, 0444);
 MODULE_PARM_DESC(rx_refill_threshold,
 		 "RX descriptor ring refill threshold (%)");
 
+#ifdef CONFIG_RFS_ACCEL
+
+int efx_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
+		   u16 rxq_index, u32 flow_id)
+{
+	struct efx_nic *efx = netdev_priv(net_dev);
+	struct efx_channel *channel;
+	struct efx_filter_spec spec;
+	const struct iphdr *ip;
+	const __be16 *ports;
+	int nhoff;
+	int rc;
+
+	nhoff = skb_network_offset(skb);
+
+	if (skb->protocol == htons(ETH_P_8021Q)) {
+		EFX_BUG_ON_PARANOID(skb_headlen(skb) <
+				    nhoff + sizeof(struct vlan_hdr));
+		if (((const struct vlan_hdr *)skb->data + nhoff)->
+		    h_vlan_encapsulated_proto != htons(ETH_P_IP))
+			return -EPROTONOSUPPORT;
+
+		/* This is IP over 802.1q VLAN.  We can't filter on the
+		 * IP 5-tuple and the vlan together, so just strip the
+		 * vlan header and filter on the IP part.
+		 */
+		nhoff += sizeof(struct vlan_hdr);
+	} else if (skb->protocol != htons(ETH_P_IP)) {
+		return -EPROTONOSUPPORT;
+	}
+
+	/* RFS must validate the IP header length before calling us */
+	EFX_BUG_ON_PARANOID(skb_headlen(skb) < nhoff + sizeof(*ip));
+	ip = (const struct iphdr *)(skb->data + nhoff);
+	if (ip_is_fragment(ip))
+		return -EPROTONOSUPPORT;
+	EFX_BUG_ON_PARANOID(skb_headlen(skb) < nhoff + 4 * ip->ihl + 4);
+	ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
+
+	efx_filter_init_rx(&spec, EFX_FILTER_PRI_HINT,
+			   efx->rx_scatter ? EFX_FILTER_FLAG_RX_SCATTER : 0,
+			   rxq_index);
+	rc = efx_filter_set_ipv4_full(&spec, ip->protocol,
+				      ip->daddr, ports[1], ip->saddr, ports[0]);
+	if (rc)
+		return rc;
+
+	rc = efx->type->filter_rfs_insert(efx, &spec);
+	if (rc < 0)
+		return rc;
+
+	/* Remember this so we can check whether to expire the filter later */
+	efx->rps_flow_id[rc] = flow_id;
+	channel = efx_get_channel(efx, skb_get_rx_queue(skb));
+	++channel->rfs_filters_added;
+
+	netif_info(efx, rx_status, efx->net_dev,
+		   "steering %s %pI4:%u:%pI4:%u to queue %u [flow %u filter %d]\n",
+		   (ip->protocol == IPPROTO_TCP) ? "TCP" : "UDP",
+		   &ip->saddr, ntohs(ports[0]), &ip->daddr, ntohs(ports[1]),
+		   rxq_index, flow_id, rc);
+
+	return rc;
+}
+
+bool __efx_filter_rfs_expire(struct efx_nic *efx, unsigned int quota)
+{
+	bool (*expire_one)(struct efx_nic *efx, u32 flow_id, unsigned int index);
+	unsigned int index, size;
+	u32 flow_id;
+
+	if (!spin_trylock_bh(&efx->filter_lock))
+		return false;
+
+	expire_one = efx->type->filter_rfs_expire_one;
+	index = efx->rps_expire_index;
+	size = efx->type->max_rx_ip_filters;
+	while (quota--) {
+		flow_id = efx->rps_flow_id[index];
+		if (expire_one(efx, flow_id, index))
+			netif_info(efx, rx_status, efx->net_dev,
+				   "expired filter %d [flow %u]\n",
+				   index, flow_id);
+		if (++index == size)
+			index = 0;
+	}
+	efx->rps_expire_index = index;
+
+	spin_unlock_bh(&efx->filter_lock);
+	return true;
+}
+
+#endif /* CONFIG_RFS_ACCEL */
diff --git a/drivers/net/ethernet/sfc/siena.c b/drivers/net/ethernet/sfc/siena.c
index 23e5731..5120cd8 100644
--- a/drivers/net/ethernet/sfc/siena.c
+++ b/drivers/net/ethernet/sfc/siena.c
@@ -736,6 +736,21 @@ const struct efx_nic_type siena_a0_nic_type = {
 	.ev_process = efx_farch_ev_process,
 	.ev_read_ack = efx_farch_ev_read_ack,
 	.ev_test_generate = efx_farch_ev_test_generate,
+	.filter_table_probe = efx_farch_filter_table_probe,
+	.filter_table_restore = efx_farch_filter_table_restore,
+	.filter_table_remove = efx_farch_filter_table_remove,
+	.filter_update_rx_scatter = efx_farch_filter_update_rx_scatter,
+	.filter_insert = efx_farch_filter_insert,
+	.filter_remove_safe = efx_farch_filter_remove_safe,
+	.filter_get_safe = efx_farch_filter_get_safe,
+	.filter_clear_rx = efx_farch_filter_clear_rx,
+	.filter_count_rx_used = efx_farch_filter_count_rx_used,
+	.filter_get_rx_id_limit = efx_farch_filter_get_rx_id_limit,
+	.filter_get_rx_ids = efx_farch_filter_get_rx_ids,
+#ifdef CONFIG_RFS_ACCEL
+	.filter_rfs_insert = efx_farch_filter_rfs_insert,
+	.filter_rfs_expire_one = efx_farch_filter_rfs_expire_one,
+#endif
 
 	.revision = EFX_REV_SIENA_A0,
 	.txd_ptr_tbl_base = FR_BZ_TX_DESC_PTR_TBL,
@@ -752,4 +767,5 @@ const struct efx_nic_type siena_a0_nic_type = {
 	.offload_features = (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
 			     NETIF_F_RXHASH | NETIF_F_NTUPLE),
 	.mcdi_max_ver = 1,
+	.max_rx_ip_filters = FR_BZ_RX_FILTER_TBL0_ROWS,
 };
