diff options
| author | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
|---|---|---|
| committer | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
| commit | fcc9d2e5a6c89d22b8b773a64fb4ad21ac318446 (patch) | |
| tree | a57612d1888735a2ec7972891b68c1ac5ec8faea /drivers/net/sfc/filter.h | |
| parent | 8dea78da5cee153b8af9c07a2745f6c55057fe12 (diff) | |
Diffstat (limited to 'drivers/net/sfc/filter.h')
| -rw-r--r-- | drivers/net/sfc/filter.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/drivers/net/sfc/filter.h b/drivers/net/sfc/filter.h new file mode 100644 index 00000000000..872f2132a49 --- /dev/null +++ b/drivers/net/sfc/filter.h | |||
| @@ -0,0 +1,112 @@ | |||
| 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 | |||
| 15 | /** | ||
| 16 | * enum efx_filter_type - type of hardware filter | ||
| 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 | ||
| 24 | * | ||
| 25 | * Falcon NICs only support the TCP/IPv4 and UDP/IPv4 filter types. | ||
| 26 | */ | ||
| 27 | enum efx_filter_type { | ||
| 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, | ||
| 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. | ||
| 62 | * @EFX_FILTER_FLAG_RX: Filter is for RX | ||
| 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, | ||
| 68 | EFX_FILTER_FLAG_RX = 0x08, | ||
| 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 | |||
| 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) | ||
| 94 | { | ||
| 95 | spec->type = EFX_FILTER_UNSPEC; | ||
| 96 | spec->priority = priority; | ||
| 97 | spec->flags = EFX_FILTER_FLAG_RX | flags; | ||
| 98 | spec->dmaq_id = rxq_id; | ||
| 99 | } | ||
| 100 | |||
| 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 | }; | ||
| 111 | |||
| 112 | #endif /* EFX_FILTER_H */ | ||
