Merge branch 'master' into tk71

[mv-sheeva.git] / drivers / net / sfc / filter.h

diff --git a/drivers/net/sfc/filter.h b/drivers/net/sfc/filter.h
new file mode 100644 (file)
index 0000000..872f213
--- /dev/null
+++ b/drivers/net/sfc/filter.h
@@ -0,0 +1,112 @@
+/****************************************************************************
+ * 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.
+ */
+
+#ifndef EFX_FILTER_H
+#define EFX_FILTER_H
+
+#include <linux/types.h>
+
+/**
+ * enum efx_filter_type - type of hardware filter
+ * @EFX_FILTER_TCP_FULL: Matching TCP/IPv4 4-tuple
+ * @EFX_FILTER_TCP_WILD: Matching TCP/IPv4 destination (host, port)
+ * @EFX_FILTER_UDP_FULL: Matching UDP/IPv4 4-tuple
+ * @EFX_FILTER_UDP_WILD: Matching UDP/IPv4 destination (host, port)
+ * @EFX_FILTER_MAC_FULL: Matching Ethernet destination MAC address, VID
+ * @EFX_FILTER_MAC_WILD: Matching Ethernet destination MAC address
+ * @EFX_FILTER_UNSPEC: Match type is unspecified
+ *
+ * Falcon NICs only support the TCP/IPv4 and UDP/IPv4 filter types.
+ */
+enum efx_filter_type {
+       EFX_FILTER_TCP_FULL = 0,
+       EFX_FILTER_TCP_WILD,
+       EFX_FILTER_UDP_FULL,
+       EFX_FILTER_UDP_WILD,
+       EFX_FILTER_MAC_FULL = 4,
+       EFX_FILTER_MAC_WILD,
+       EFX_FILTER_TYPE_COUNT,          /* number of specific types */
+       EFX_FILTER_UNSPEC = 0xf,
+};
+
+/**
+ * enum efx_filter_priority - priority of a hardware filter specification
+ * @EFX_FILTER_PRI_HINT: Performance hint
+ * @EFX_FILTER_PRI_MANUAL: Manually configured filter
+ * @EFX_FILTER_PRI_REQUIRED: Required for correct behaviour
+ */
+enum efx_filter_priority {
+       EFX_FILTER_PRI_HINT = 0,
+       EFX_FILTER_PRI_MANUAL,
+       EFX_FILTER_PRI_REQUIRED,
+};
+
+/**
+ * enum efx_filter_flags - flags for hardware filter specifications
+ * @EFX_FILTER_FLAG_RX_RSS: Use RSS to spread across multiple queues.
+ *     By default, matching packets will be delivered only to the
+ *     specified queue. If this flag is set, they will be delivered
+ *     to a range of queues offset from the specified queue number
+ *     according to the indirection table.
+ * @EFX_FILTER_FLAG_RX_SCATTER: Enable DMA scatter on the receiving
+ *     queue.
+ * @EFX_FILTER_FLAG_RX_OVERRIDE_IP: Enables a MAC filter to override
+ *     any IP filter that matches the same packet.  By default, IP
+ *     filters take precedence.
+ * @EFX_FILTER_FLAG_RX: Filter is for RX
+ */
+enum efx_filter_flags {
+       EFX_FILTER_FLAG_RX_RSS = 0x01,
+       EFX_FILTER_FLAG_RX_SCATTER = 0x02,
+       EFX_FILTER_FLAG_RX_OVERRIDE_IP = 0x04,
+       EFX_FILTER_FLAG_RX = 0x08,
+};
+
+/**
+ * struct efx_filter_spec - specification for a hardware filter
+ * @type: Type of match to be performed, from &enum efx_filter_type
+ * @priority: Priority of the filter, from &enum efx_filter_priority
+ * @flags: Miscellaneous flags, from &enum efx_filter_flags
+ * @dmaq_id: Source/target queue index
+ * @data: Match data (type-dependent)
+ *
+ * Use the efx_filter_set_*() functions to initialise the @type and
+ * @data fields.
+ */
+struct efx_filter_spec {
+       u8      type:4;
+       u8      priority:4;
+       u8      flags;
+       u16     dmaq_id;
+       u32     data[3];
+};
+
+static inline void efx_filter_init_rx(struct efx_filter_spec *spec,
+                                     enum efx_filter_priority priority,
+                                     enum efx_filter_flags flags,
+                                     unsigned rxq_id)
+{
+       spec->type = EFX_FILTER_UNSPEC;
+       spec->priority = priority;
+       spec->flags = EFX_FILTER_FLAG_RX | flags;
+       spec->dmaq_id = rxq_id;
+}
+
+extern int efx_filter_set_ipv4_local(struct efx_filter_spec *spec, u8 proto,
+                                    __be32 host, __be16 port);
+extern int efx_filter_set_ipv4_full(struct efx_filter_spec *spec, u8 proto,
+                                   __be32 host, __be16 port,
+                                   __be32 rhost, __be16 rport);
+extern int efx_filter_set_eth_local(struct efx_filter_spec *spec,
+                                   u16 vid, const u8 *addr);
+enum {
+       EFX_FILTER_VID_UNSPEC = 0xffff,
+};
+
+#endif /* EFX_FILTER_H */