sfc: Make most filter operations NIC-type-specific

Aside from accelerated RFS, there is almost nothing that can be shared
between the filter table implementations for the Falcon architecture
and EF10.

Move the few shared functions into efx.c and rx.c and the rest into
farch.c.  Introduce efx_nic_type operations for the implementation and
inline wrapper functions that call these.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>

1 files changed, 46 insertions, 0 deletions

diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index 5287a3cd639c..d35ce1410376 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;
 };
 
 /**************************************************************************