source: mainline/uspace/lib/nic/include/nic_rx_control.h@ 22fb7ab

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 22fb7ab was cf9cb36, checked in by Jiri Svoboda <jiri@…>, 13 years ago

Decouple libnic from libnet.
  • Property mode set to 100644
File size: 4.9 KB
RevLine 
[00d7e1b]1/*
2 * Copyright (c) 2011 Radim Vansa
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/**
30 * @addtogroup libnic
31 * @{
32 */
33/**
34 * @file
35 * @brief Incoming packets (frames) filtering control structures
36 */
37
38#ifndef __NIC_FILTERS_H__
39#define __NIC_FILTERS_H__
40
41#ifndef LIBNIC_INTERNAL
42#error "This is internal libnic's header, please do not include it"
43#endif
44
45#include <adt/hash_table.h>
46#include <fibril_synch.h>
[cf9cb36]47#include <nic/nic.h>
[00d7e1b]48
49#include "nic_addr_db.h"
50
51/**
52 * General structure describing receive control.
53 * The structure is not synchronized inside, the nic_driver should provide
54 * a synchronized facade.
55 */
56typedef struct nic_rxc {
57 /**
58 * Allowed unicast destination MAC addresses
59 */
60 nic_addr_db_t unicast_addrs;
61 /**
62 * Allowed unicast destination MAC addresses
63 */
64 nic_addr_db_t multicast_addrs;
65 /**
66 * Single flag if any source is blocked
67 */
68 int block_sources;
69 /**
70 * Blocked source MAC addresses
71 */
72 nic_addr_db_t blocked_sources;
73 /**
74 * Selected mode for unicast frames
75 */
76 nic_unicast_mode_t unicast_mode;
77 /**
78 * Selected mode for multicast frames
79 */
80 nic_multicast_mode_t multicast_mode;
81 /**
82 * Selected mode for broadcast frames
83 */
84 nic_broadcast_mode_t broadcast_mode;
85 /**
86 * Mask for VLAN tags. This vector must be at least 512 bytes long.
87 */
88 nic_vlan_mask_t *vlan_mask;
89 /**
90 * If true, the NIC is receiving only unicast frames which we really want to
91 * receive (the filtering is perfect).
92 */
93 int unicast_exact;
94 /**
95 * If true, the NIC is receiving only multicast frames which we really want
96 * to receive (the filtering is perfect).
97 */
98 int multicast_exact;
99 /**
100 * If true, the NIC is receiving only frames with VLAN tags which we really
101 * want to receive (the filtering is perfect).
102 */
103 int vlan_exact;
104} nic_rxc_t;
105
106#define VLAN_TPID_UPPER 0x81
107#define VLAN_TPID_LOWER 0x00
108
109typedef struct vlan_header {
110 uint8_t tpid_upper;
111 uint8_t tpid_lower;
112 uint8_t vid_upper;
113 uint8_t vid_lower;
114} __attribute__ ((packed)) vlan_header_t;
115
116extern int nic_rxc_init(nic_rxc_t *rxc);
117extern int nic_rxc_clear(nic_rxc_t *rxc);
118extern int nic_rxc_set_addr(nic_rxc_t *rxc,
119 const nic_address_t *prev_addr, const nic_address_t *curr_addr);
120extern int nic_rxc_check(const nic_rxc_t *rxc,
[1bc35b5]121 const void *data, size_t size, nic_frame_type_t *frame_type);
[00d7e1b]122extern void nic_rxc_hw_filtering(nic_rxc_t *rxc,
123 int unicast_exact, int multicast_exact, int vlan_exact);
124extern uint64_t nic_rxc_mcast_hash(const nic_address_t *list, size_t count);
125extern uint64_t nic_rxc_multicast_get_hash(const nic_rxc_t *rxc);
126extern void nic_rxc_unicast_get_mode(const nic_rxc_t *, nic_unicast_mode_t *,
127 size_t max_count, nic_address_t *address_list, size_t *address_count);
128extern int nic_rxc_unicast_set_mode(nic_rxc_t *rxc, nic_unicast_mode_t mode,
129 const nic_address_t *address_list, size_t address_count);
130extern void nic_rxc_multicast_get_mode(const nic_rxc_t *,
131 nic_multicast_mode_t *, size_t, nic_address_t *, size_t *);
132extern int nic_rxc_multicast_set_mode(nic_rxc_t *, nic_multicast_mode_t mode,
133 const nic_address_t *address_list, size_t address_count);
134extern void nic_rxc_broadcast_get_mode(const nic_rxc_t *,
135 nic_broadcast_mode_t *mode);
136extern int nic_rxc_broadcast_set_mode(nic_rxc_t *,
137 nic_broadcast_mode_t mode);
138extern void nic_rxc_blocked_sources_get(const nic_rxc_t *,
139 size_t max_count, nic_address_t *address_list, size_t *address_count);
140extern int nic_rxc_blocked_sources_set(nic_rxc_t *,
141 const nic_address_t *address_list, size_t address_count);
142extern int nic_rxc_vlan_get_mask(const nic_rxc_t *rxc, nic_vlan_mask_t *mask);
143extern int nic_rxc_vlan_set_mask(nic_rxc_t *rxc, const nic_vlan_mask_t *mask);
144
145#endif
146
147/** @}
148 */
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