diff options
author | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
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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 */ | ||