Ben Hutchings | 64eebcf | 2010-09-20 08:43:07 +0000 | [diff] [blame] | 1 | /**************************************************************************** |
| 2 | * Driver for Solarflare Solarstorm network controllers and boards |
| 3 | * Copyright 2005-2010 Solarflare Communications Inc. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 as published |
| 7 | * by the Free Software Foundation, incorporated herein by reference. |
| 8 | */ |
| 9 | |
| 10 | #ifndef EFX_FILTER_H |
| 11 | #define EFX_FILTER_H |
| 12 | |
| 13 | #include <linux/types.h> |
| 14 | |
Ben Hutchings | 64eebcf | 2010-09-20 08:43:07 +0000 | [diff] [blame] | 15 | /** |
| 16 | * enum efx_filter_type - type of hardware filter |
Ben Hutchings | c39d35e | 2010-12-07 19:11:26 +0000 | [diff] [blame^] | 17 | * @EFX_FILTER_TCP_FULL: Matching TCP/IPv4 4-tuple |
| 18 | * @EFX_FILTER_TCP_WILD: Matching TCP/IPv4 destination (host, port) |
| 19 | * @EFX_FILTER_UDP_FULL: Matching UDP/IPv4 4-tuple |
| 20 | * @EFX_FILTER_UDP_WILD: Matching UDP/IPv4 destination (host, port) |
| 21 | * @EFX_FILTER_MAC_FULL: Matching Ethernet destination MAC address, VID |
| 22 | * @EFX_FILTER_MAC_WILD: Matching Ethernet destination MAC address |
| 23 | * @EFX_FILTER_UNSPEC: Match type is unspecified |
Ben Hutchings | 64eebcf | 2010-09-20 08:43:07 +0000 | [diff] [blame] | 24 | * |
Ben Hutchings | c39d35e | 2010-12-07 19:11:26 +0000 | [diff] [blame^] | 25 | * Falcon NICs only support the TCP/IPv4 and UDP/IPv4 filter types. |
Ben Hutchings | 64eebcf | 2010-09-20 08:43:07 +0000 | [diff] [blame] | 26 | */ |
| 27 | enum efx_filter_type { |
Ben Hutchings | c39d35e | 2010-12-07 19:11:26 +0000 | [diff] [blame^] | 28 | EFX_FILTER_TCP_FULL = 0, |
| 29 | EFX_FILTER_TCP_WILD, |
| 30 | EFX_FILTER_UDP_FULL, |
| 31 | EFX_FILTER_UDP_WILD, |
| 32 | EFX_FILTER_MAC_FULL = 4, |
| 33 | EFX_FILTER_MAC_WILD, |
| 34 | EFX_FILTER_TYPE_COUNT, /* number of specific types */ |
| 35 | EFX_FILTER_UNSPEC = 0xf, |
Ben Hutchings | 64eebcf | 2010-09-20 08:43:07 +0000 | [diff] [blame] | 36 | }; |
| 37 | |
| 38 | /** |
| 39 | * enum efx_filter_priority - priority of a hardware filter specification |
| 40 | * @EFX_FILTER_PRI_HINT: Performance hint |
| 41 | * @EFX_FILTER_PRI_MANUAL: Manually configured filter |
| 42 | * @EFX_FILTER_PRI_REQUIRED: Required for correct behaviour |
| 43 | */ |
| 44 | enum efx_filter_priority { |
| 45 | EFX_FILTER_PRI_HINT = 0, |
| 46 | EFX_FILTER_PRI_MANUAL, |
| 47 | EFX_FILTER_PRI_REQUIRED, |
| 48 | }; |
| 49 | |
| 50 | /** |
| 51 | * enum efx_filter_flags - flags for hardware filter specifications |
| 52 | * @EFX_FILTER_FLAG_RX_RSS: Use RSS to spread across multiple queues. |
| 53 | * By default, matching packets will be delivered only to the |
| 54 | * specified queue. If this flag is set, they will be delivered |
| 55 | * to a range of queues offset from the specified queue number |
| 56 | * according to the indirection table. |
| 57 | * @EFX_FILTER_FLAG_RX_SCATTER: Enable DMA scatter on the receiving |
| 58 | * queue. |
| 59 | * @EFX_FILTER_FLAG_RX_OVERRIDE_IP: Enables a MAC filter to override |
| 60 | * any IP filter that matches the same packet. By default, IP |
| 61 | * filters take precedence. |
Ben Hutchings | c39d35e | 2010-12-07 19:11:26 +0000 | [diff] [blame^] | 62 | * @EFX_FILTER_FLAG_RX: Filter is for RX |
Ben Hutchings | 64eebcf | 2010-09-20 08:43:07 +0000 | [diff] [blame] | 63 | */ |
| 64 | enum efx_filter_flags { |
| 65 | EFX_FILTER_FLAG_RX_RSS = 0x01, |
| 66 | EFX_FILTER_FLAG_RX_SCATTER = 0x02, |
| 67 | EFX_FILTER_FLAG_RX_OVERRIDE_IP = 0x04, |
Ben Hutchings | c39d35e | 2010-12-07 19:11:26 +0000 | [diff] [blame^] | 68 | EFX_FILTER_FLAG_RX = 0x08, |
Ben Hutchings | 64eebcf | 2010-09-20 08:43:07 +0000 | [diff] [blame] | 69 | }; |
| 70 | |
| 71 | /** |
| 72 | * struct efx_filter_spec - specification for a hardware filter |
| 73 | * @type: Type of match to be performed, from &enum efx_filter_type |
| 74 | * @priority: Priority of the filter, from &enum efx_filter_priority |
| 75 | * @flags: Miscellaneous flags, from &enum efx_filter_flags |
| 76 | * @dmaq_id: Source/target queue index |
| 77 | * @data: Match data (type-dependent) |
| 78 | * |
| 79 | * Use the efx_filter_set_*() functions to initialise the @type and |
| 80 | * @data fields. |
| 81 | */ |
| 82 | struct efx_filter_spec { |
| 83 | u8 type:4; |
| 84 | u8 priority:4; |
| 85 | u8 flags; |
| 86 | u16 dmaq_id; |
| 87 | u32 data[3]; |
| 88 | }; |
| 89 | |
Ben Hutchings | c39d35e | 2010-12-07 19:11:26 +0000 | [diff] [blame^] | 90 | static inline void efx_filter_init_rx(struct efx_filter_spec *spec, |
| 91 | enum efx_filter_priority priority, |
| 92 | enum efx_filter_flags flags, |
| 93 | unsigned rxq_id) |
Ben Hutchings | 64eebcf | 2010-09-20 08:43:07 +0000 | [diff] [blame] | 94 | { |
Ben Hutchings | c39d35e | 2010-12-07 19:11:26 +0000 | [diff] [blame^] | 95 | spec->type = EFX_FILTER_UNSPEC; |
| 96 | spec->priority = priority; |
| 97 | spec->flags = EFX_FILTER_FLAG_RX | flags; |
| 98 | spec->dmaq_id = rxq_id; |
Ben Hutchings | 64eebcf | 2010-09-20 08:43:07 +0000 | [diff] [blame] | 99 | } |
| 100 | |
Ben Hutchings | c39d35e | 2010-12-07 19:11:26 +0000 | [diff] [blame^] | 101 | extern int efx_filter_set_ipv4_local(struct efx_filter_spec *spec, u8 proto, |
| 102 | __be32 host, __be16 port); |
| 103 | extern int efx_filter_set_ipv4_full(struct efx_filter_spec *spec, u8 proto, |
| 104 | __be32 host, __be16 port, |
| 105 | __be32 rhost, __be16 rport); |
| 106 | extern int efx_filter_set_eth_local(struct efx_filter_spec *spec, |
| 107 | u16 vid, const u8 *addr); |
| 108 | enum { |
| 109 | EFX_FILTER_VID_UNSPEC = 0xffff, |
| 110 | }; |
Ben Hutchings | 64eebcf | 2010-09-20 08:43:07 +0000 | [diff] [blame] | 111 | |
| 112 | #endif /* EFX_FILTER_H */ |