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1da177e4 LT |
1 | # |
2 | # IrDA protocol configuration | |
3 | # | |
4 | ||
5 | menuconfig IRDA | |
6 | depends on NET | |
7 | tristate "IrDA (infrared) subsystem support" | |
8 | select CRC_CCITT | |
9 | ---help--- | |
10 | Say Y here if you want to build support for the IrDA (TM) protocols. | |
11 | The Infrared Data Associations (tm) specifies standards for wireless | |
12 | infrared communication and is supported by most laptops and PDA's. | |
13 | ||
14 | To use Linux support for the IrDA (tm) protocols, you will also need | |
15 | some user-space utilities like irattach. For more information, see | |
16 | the file <file:Documentation/networking/irda.txt>. You also want to | |
17 | read the IR-HOWTO, available at | |
18 | <http://www.tldp.org/docs.html#howto>. | |
19 | ||
20 | If you want to exchange bits of data (vCal, vCard) with a PDA, you | |
21 | will need to install some OBEX application, such as OpenObex : | |
22 | <http://sourceforge.net/projects/openobex/> | |
23 | ||
24 | To compile this support as a module, choose M here: the module will | |
25 | be called irda. | |
26 | ||
27 | comment "IrDA protocols" | |
28 | depends on IRDA | |
29 | ||
30 | source "net/irda/irlan/Kconfig" | |
31 | ||
32 | source "net/irda/irnet/Kconfig" | |
33 | ||
34 | source "net/irda/ircomm/Kconfig" | |
35 | ||
36 | config IRDA_ULTRA | |
37 | bool "Ultra (connectionless) protocol" | |
38 | depends on IRDA | |
39 | help | |
40 | Say Y here to support the connectionless Ultra IRDA protocol. | |
41 | Ultra allows to exchange data over IrDA with really simple devices | |
42 | (watch, beacon) without the overhead of the IrDA protocol (no handshaking, | |
43 | no management frames, simple fixed header). | |
44 | Ultra is available as a special socket : socket(AF_IRDA, SOCK_DGRAM, 1); | |
45 | ||
46 | comment "IrDA options" | |
47 | depends on IRDA | |
48 | ||
49 | config IRDA_CACHE_LAST_LSAP | |
50 | bool "Cache last LSAP" | |
51 | depends on IRDA | |
52 | help | |
53 | Say Y here if you want IrLMP to cache the last LSAP used. This | |
54 | makes sense since most frames will be sent/received on the same | |
55 | connection. Enabling this option will save a hash-lookup per frame. | |
56 | ||
57 | If unsure, say Y. | |
58 | ||
59 | config IRDA_FAST_RR | |
60 | bool "Fast RRs (low latency)" | |
61 | depends on IRDA | |
62 | ---help--- | |
63 | Say Y here is you want IrLAP to send fast RR (Receive Ready) frames | |
64 | when acting as a primary station. | |
65 | Disabling this option will make latency over IrDA very bad. Enabling | |
66 | this option will make the IrDA stack send more packet than strictly | |
67 | necessary, thus reduce your battery life (but not that much). | |
68 | ||
69 | Fast RR will make IrLAP send out a RR frame immediately when | |
70 | receiving a frame if its own transmit queue is currently empty. This | |
71 | will give a lot of speed improvement when receiving much data since | |
72 | the secondary station will not have to wait the max. turn around | |
73 | time (usually 500ms) before it is allowed to transmit the next time. | |
74 | If the transmit queue of the secondary is also empty, the primary will | |
75 | start backing-off before sending another RR frame, waiting longer | |
76 | each time until the back-off reaches the max. turn around time. | |
77 | This back-off increase in controlled via | |
78 | /proc/sys/net/irda/fast_poll_increase | |
79 | ||
80 | If unsure, say Y. | |
81 | ||
82 | config IRDA_DEBUG | |
83 | bool "Debug information" | |
84 | depends on IRDA | |
85 | help | |
86 | Say Y here if you want the IrDA subsystem to write debug information | |
87 | to your syslog. You can change the debug level in | |
88 | /proc/sys/net/irda/debug . | |
89 | When this option is enabled, the IrDA also perform many extra internal | |
90 | verifications which will usually prevent the kernel to crash in case of | |
91 | bugs. | |
92 | ||
93 | If unsure, say Y (since it makes it easier to find the bugs). | |
94 | ||
95 | source "drivers/net/irda/Kconfig" | |
96 |