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/ Developer CD Series 1996 January: Mac OS SDK / Dev.CD Jan 96 SDK / Dev.CD Jan 96 SDK1.toast / Development Kits (Disc 1) / MacTCP / MacTCP Developer Tools / MacTCP LAP Tech Note
MacBinary  |  1995-01-11  |  95.0 KB  |  [ONLN/HLX2]
open in: MacOS 8.1     |     Win98     |     DOS

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This file was processed as: MacBinary (archive/macBinary).

ConfidenceProgramDetectionMatch TypeSupport
10% dexvert MacBinary (archive/macBinary) fallback Supported
100% file MacBinary II, inited, Wed Jan 11 06:00:00 1995, modified Wed Jan 11 06:00:00 1995, creator 'HLX2', type 'ONLN', 93545 bytes "MacTCP LAP Tech Note" , at 0x16de9 3510 bytes resource default (weak)
99% file data default
66% TrID raw Group 3 FAX bitmap default (weak)
33% TrID MacBinary 2 default (weak)
100% siegfried fmt/1762 MacBinary (II) default
100% lsar MacBinary default


id metadata
keyvalue
macFileType[ONLN]
macFileCreator[HLX2]


hex view
+--------+-------------------------+-------------------------+--------+--------+
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|00000010| 68 20 4e 6f 74 65 00 00 | 00 00 00 00 00 00 00 00 |h Note..|........|
|00000020| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000030| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
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|00000080| 4d 61 63 54 43 50 20 31 | 2e 30 20 75 73 65 73 20 |MacTCP 1|.0 uses |
|00000090| 4d 50 57 20 43 20 32 2e | 31 20 63 61 6c 6c 69 6e |MPW C 2.|1 callin|
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|00000bd0| 50 20 66 72 6f 6d 20 74 | 68 65 20 4d 61 63 54 43 |P from t|he MacTC|
|00000be0| 50 20 43 6f 6e 74 72 6f | 6c 20 50 61 6e 65 6c 20 |P Contro|l Panel |
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|00000ce0| 4c 41 50 20 63 6f 64 65 | 20 72 65 73 6f 75 72 63 |LAP code| resourc|
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|00000d30| 72 65 73 6f 75 72 63 65 | 09 09 46 69 6e 64 65 72 |resource|..Finder|
|00000d40| 20 69 6e 66 6f 72 6d 61 | 74 69 6f 6e 0d 09 0d 54 | informa|tion...T|
|00000d50| 68 65 20 49 43 4e 23 20 | 61 6e 64 20 53 54 52 20 |he ICN# |and STR |
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|00002190| 65 20 43 6f 6e 6e 65 63 | 74 69 6f 6e 73 0d 53 65 |e Connec|tions.Se|
|000021a0| 72 69 61 6c 20 63 6f 6e | 6e 65 63 74 69 6f 6e 73 |rial con|nections|
|000021b0| 20 73 68 6f 75 6c 64 20 | 62 65 20 74 72 65 61 74 | should |be treat|
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|000021d0| 68 61 6e 20 6f 74 68 65 | 72 20 4c 41 50 20 69 6e |han othe|r LAP in|
|000021e0| 74 65 72 66 61 63 65 73 | 20 62 65 63 61 75 73 65 |terfaces| because|
|000021f0| 20 73 65 72 69 61 6c 20 | 6c 69 6e 65 73 20 61 72 | serial |lines ar|
|00002200| 65 20 75 73 65 64 20 6d | 6f 73 74 20 65 66 66 69 |e used m|ost effi|
|00002210| 63 69 65 6e 74 6c 79 20 | 62 79 20 64 69 73 63 6f |ciently |by disco|
|00002220| 6e 6e 65 63 74 69 6e 67 | 20 74 68 65 6d 20 61 66 |nnecting| them af|
|00002230| 74 65 72 20 74 68 65 20 | 6e 65 74 77 6f 72 6b 20 |ter the |network |
|00002240| 74 72 61 6e 73 61 63 74 | 69 6f 6e 20 68 61 73 20 |transact|ion has |
|00002250| 62 65 65 6e 20 63 6f 6d | 70 6c 65 74 65 64 2e 20 |been com|pleted. |
|00002260| 20 53 69 6e 63 65 20 4d | 61 63 54 43 50 20 68 61 | Since M|acTCP ha|
|00002270| 73 20 6e 6f 20 77 61 79 | 20 6f 66 20 64 65 74 65 |s no way| of dete|
|00002280| 72 6d 69 6e 69 6e 67 20 | 77 68 65 6e 20 61 20 6c |rmining |when a l|
|00002290| 69 6e 6b 20 68 61 73 20 | 62 65 63 6f 6d 65 20 69 |ink has |become i|
|000022a0| 64 6c 65 2c 20 69 74 20 | 73 68 6f 75 6c 64 20 62 |dle, it |should b|
|000022b0| 65 20 73 68 75 74 20 64 | 6f 77 6e 3b 20 74 68 65 |e shut d|own; the|
|000022c0| 72 65 66 6f 72 65 2c 20 | 74 68 65 20 73 65 72 69 |refore, |the seri|
|000022d0| 61 6c 20 6c 69 6e 6b 20 | 69 6e 74 65 72 66 61 63 |al link |interfac|
|000022e0| 65 20 73 68 6f 75 6c 64 | 20 61 73 6b 20 74 68 65 |e should| ask the|
|000022f0| 20 75 73 65 72 20 66 6f | 72 20 61 20 74 69 6d 65 | user fo|r a time|
|00002300| 20 69 6e 74 65 72 76 61 | 6c 20 74 68 61 74 20 77 | interva|l that w|
|00002310| 69 6c 6c 20 70 72 6f 6d | 70 74 20 68 69 6d 2f 68 |ill prom|pt him/h|
|00002320| 65 72 20 69 66 20 74 68 | 65 20 6c 69 6e 65 20 73 |er if th|e line s|
|00002330| 68 6f 75 6c 64 20 62 65 | 20 64 69 73 63 6f 6e 6e |hould be| disconn|
|00002340| 65 63 74 65 64 2e 20 20 | 54 68 65 20 75 73 65 72 |ected.  |The user|
|00002350| 20 73 68 6f 75 6c 64 20 | 61 6c 77 61 79 73 20 62 | should |always b|
|00002360| 65 20 61 62 6c 65 20 74 | 6f 20 6f 76 65 72 72 69 |e able t|o overri|
|00002370| 64 65 20 64 69 73 63 6f | 6e 6e 65 63 74 69 6f 6e |de disco|nnection|
|00002380| 20 74 68 6f 75 67 68 20 | 69 74 20 6d 61 79 20 62 | though |it may b|
|00002390| 65 20 70 72 75 64 65 6e | 74 20 74 6f 20 66 6f 72 |e pruden|t to for|
|000023a0| 63 65 20 64 69 73 63 6f | 6e 6e 65 63 74 69 6f 6e |ce disco|nnection|
|000023b0| 20 69 66 20 74 68 65 72 | 65 20 69 73 20 6e 6f 20 | if ther|e is no |
|000023c0| 72 65 73 70 6f 6e 73 65 | 2e 0d 57 68 65 6e 20 74 |response|..When t|
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|000023e0| 6f 6e 6e 65 63 74 65 64 | 20 74 68 65 20 70 72 6f |onnected| the pro|
|000023f0| 63 65 64 75 72 65 20 70 | 61 73 73 65 64 20 69 6e |cedure p|assed in|
|00002400| 2c 20 74 68 65 20 4c 41 | 50 5f 49 6e 69 74 20 63 |, the LA|P_Init c|
|00002410| 61 6c 6c 20 73 68 6f 75 | 6c 64 20 62 65 20 63 61 |all shou|ld be ca|
|00002420| 6c 6c 65 64 20 6e 6f 74 | 69 66 79 69 6e 67 20 4d |lled not|ifying M|
|00002430| 61 63 54 43 50 20 74 68 | 61 74 20 74 68 65 20 6c |acTCP th|at the l|
|00002440| 69 6e 6b 20 69 73 20 6e | 6f 20 6c 6f 6e 67 65 72 |ink is n|o longer|
|00002450| 20 61 63 74 69 76 65 2e | 20 20 4d 61 63 54 43 50 | active.|  MacTCP|
|00002460| 20 77 69 6c 6c 20 63 61 | 6c 6c 20 74 68 65 20 6c | will ca|ll the l|
|00002470| 69 6e 6b 20 63 6f 6e 66 | 69 67 75 72 61 74 69 6f |ink conf|iguratio|
|00002480| 6e 20 63 61 6c 6c 20 77 | 68 65 6e 20 74 68 65 20 |n call w|hen the |
|00002490| 6c 69 6e 6b 20 69 73 20 | 74 6f 20 62 65 20 75 73 |link is |to be us|
|000024a0| 65 64 20 61 67 61 69 6e | 20 62 79 20 74 68 65 20 |ed again| by the |
|000024b0| 61 70 70 6c 69 63 61 74 | 69 6f 6e 2e 20 20 54 68 |applicat|ion.  Th|
|000024c0| 69 73 20 69 6e 74 65 72 | 66 61 63 65 20 69 73 20 |is inter|face is |
|000024d0| 6e 6f 74 20 6f 6e 6c 79 | 20 6f 66 20 69 6e 74 65 |not only| of inte|
|000024e0| 72 65 73 74 20 74 6f 20 | 73 65 72 69 61 6c 20 6c |rest to |serial l|
|000024f0| 69 6e 65 73 20 62 75 74 | 20 61 6c 73 6f 20 74 6f |ines but| also to|
|00002500| 20 61 6e 79 20 69 6e 74 | 65 72 66 61 63 65 20 74 | any int|erface t|
|00002510| 68 61 74 20 6d 61 79 20 | 6e 65 65 64 20 74 6f 20 |hat may |need to |
|00002520| 62 65 20 72 65 63 6f 6e | 66 69 67 75 72 65 64 20 |be recon|figured |
|00002530| 6f 76 65 72 20 61 20 70 | 65 72 69 6f 64 20 6f 66 |over a p|eriod of|
|00002540| 20 74 69 6d 65 2e 0d 56 | 4d 20 49 73 73 75 65 73 | time..V|M Issues|
|00002550| 0d 53 79 73 74 65 6d 20 | 37 2e 30 20 77 69 6c 6c |.System |7.0 will|
|00002560| 20 6d 61 6b 65 20 76 69 | 72 74 75 61 6c 20 6d 65 | make vi|rtual me|
|00002570| 6d 6f 72 79 20 61 76 61 | 69 6c 61 62 6c 65 20 6f |mory ava|ilable o|
|00002580| 6e 20 4d 61 63 69 6e 74 | 6f 73 68 20 63 6f 6d 70 |n Macint|osh comp|
|00002590| 75 74 65 72 73 2e 20 20 | 4d 61 63 54 43 50 20 65 |uters.  |MacTCP e|
|000025a0| 78 70 65 63 74 73 20 74 | 68 61 74 20 61 6c 6c 20 |xpects t|hat all |
|000025b0| 63 61 6c 6c 73 20 74 6f | 20 76 69 72 74 75 61 6c |calls to| virtual|
|000025c0| 20 6d 65 6d 6f 72 79 20 | 77 69 6c 6c 20 62 65 20 | memory |will be |
|000025d0| 6d 61 64 65 20 61 73 20 | 61 20 64 65 66 65 72 72 |made as |a deferr|
|000025e0| 65 64 20 66 75 6e 63 74 | 69 6f 6e 20 63 61 6c 6c |ed funct|ion call|
|000025f0| 2e 20 20 54 68 65 20 66 | 75 6e 63 74 69 6f 6e 61 |.  The f|unctiona|
|00002600| 6c 20 73 70 65 63 69 66 | 69 63 61 74 69 6f 6e 20 |l specif|ication |
|00002610| 66 6f 72 20 56 4d 20 67 | 6f 65 73 20 69 6e 74 6f |for VM g|oes into|
|00002620| 20 67 72 65 61 74 65 72 | 20 64 65 74 61 69 6c 20 | greater| detail |
|00002630| 6f 6e 20 74 68 65 20 64 | 65 74 61 69 6c 73 2e 20 |on the d|etails. |
|00002640| 20 46 6f 72 20 6d 6f 72 | 65 20 69 6e 66 6f 72 6d | For mor|e inform|
|00002650| 61 74 69 6f 6e 2c 20 73 | 65 65 20 49 6e 73 69 64 |ation, s|ee Insid|
|00002660| 65 20 4d 61 63 69 6e 74 | 6f 73 68 2c 20 56 6f 6c |e Macint|osh, Vol|
|00002670| 75 6d 65 20 56 49 2e 0d | 41 70 70 65 6e 64 69 78 |ume VI..|Appendix|
|00002680| 3a 20 20 49 6e 74 65 72 | 66 61 63 65 20 44 65 74 |:  Inter|face Det|
|00002690| 61 69 6c 73 0d 54 68 69 | 73 20 61 70 70 65 6e 64 |ails.Thi|s append|
|000026a0| 69 78 20 64 65 66 69 6e | 65 73 20 74 68 65 20 70 |ix defin|es the p|
|000026b0| 72 69 6d 61 72 79 20 69 | 6e 74 65 72 66 61 63 65 |rimary i|nterface|
|000026c0| 20 62 65 74 77 65 65 6e | 20 49 50 20 61 6e 64 20 | between| IP and |
|000026d0| 74 68 65 20 4c 41 50 2e | 0d 73 74 72 75 63 74 20 |the LAP.|.struct |
|000026e0| 49 50 43 6f 6e 66 69 67 | 20 7b 7d 0d 49 50 43 6f |IPConfig| {}.IPCo|
|000026f0| 6e 66 69 67 20 68 6f 6c | 64 73 20 61 6c 6c 20 6f |nfig hol|ds all o|
|00002700| 66 20 74 68 65 20 49 50 | 20 61 6e 64 20 4c 41 50 |f the IP| and LAP|
|00002710| 2d 73 70 65 63 69 66 69 | 63 20 63 6f 6e 66 69 67 |-specifi|c config|
|00002720| 75 72 61 74 69 6f 6e 20 | 69 6e 66 6f 72 6d 61 74 |uration |informat|
|00002730| 69 6f 6e 2e 20 20 54 68 | 69 73 20 69 6e 66 6f 72 |ion.  Th|is infor|
|00002740| 6d 61 74 69 6f 6e 20 69 | 73 20 72 65 61 64 20 69 |mation i|s read i|
|00002750| 6e 20 66 72 6f 6d 20 74 | 68 65 20 d4 69 70 6c 6e |n from t|he .ipln|
|00002760| d5 20 63 6f 6e 66 69 67 | 75 72 61 74 69 6f 6e 20 |. config|uration |
|00002770| 72 65 73 6f 75 72 63 65 | 2e 0d 73 74 72 75 63 74 |resource|..struct|
|00002780| 20 49 50 43 6f 6e 66 69 | 67 20 7b 0d 09 69 6e 74 | IPConfi|g {..int|
|00002790| 09 76 65 72 73 69 6f 6e | 3b 09 2f 2a 20 76 65 72 |.version|;./* ver|
|000027a0| 73 69 6f 6e 20 6e 75 6d | 62 65 72 20 2a 2f 0d 09 |sion num|ber */..|
|000027b0| 6c 6f 6e 67 09 66 6c 61 | 67 73 3b 09 2f 2a 20 6f |long.fla|gs;./* o|
|000027c0| 70 74 69 6f 6e 73 20 66 | 6c 61 67 73 20 65 6e 61 |ptions f|lags ena|
|000027d0| 62 6c 65 64 20 66 6f 72 | 20 74 68 69 73 20 4c 41 |bled for| this LA|
|000027e0| 50 20 2a 2f 0d 09 6c 6f | 6e 67 09 64 66 6c 5f 69 |P */..lo|ng.dfl_i|
|000027f0| 70 5f 61 64 64 72 3b 09 | 2f 2a 20 64 65 66 61 75 |p_addr;.|/* defau|
|00002800| 6c 74 20 49 50 20 61 64 | 64 72 65 73 73 20 2a 2f |lt IP ad|dress */|
|00002810| 0d 09 6c 6f 6e 67 09 64 | 66 6c 5f 6e 65 74 5f 6d |..long.d|fl_net_m|
|00002820| 61 73 6b 3b 09 2f 2a 20 | 64 65 66 61 75 6c 74 20 |ask;./* |default |
|00002830| 73 75 62 6e 65 74 20 6d | 61 73 6b 20 2a 2f 0d 09 |subnet m|ask */..|
|00002840| 6c 6f 6e 67 09 64 66 6c | 5f 62 72 6f 61 64 63 61 |long.dfl|_broadca|
|00002850| 73 74 5f 6d 61 73 6b 3b | 09 2f 2a 20 64 65 66 61 |st_mask;|./* defa|
|00002860| 75 6c 74 20 62 72 6f 61 | 64 63 61 73 74 20 6d 61 |ult broa|dcast ma|
|00002870| 73 6b 20 2a 2f 0d 09 6c | 6f 6e 67 09 64 66 6c 5f |sk */..l|ong.dfl_|
|00002880| 67 77 79 5f 61 64 64 72 | 3b 09 2f 2a 20 64 65 66 |gwy_addr|;./* def|
|00002890| 61 75 6c 74 20 67 61 74 | 65 77 61 79 20 61 64 64 |ault gat|eway add|
|000028a0| 72 65 73 73 20 2a 2f 0d | 09 75 6e 73 69 67 6e 65 |ress */.|.unsigne|
|000028b0| 64 20 63 68 61 72 09 73 | 65 72 76 65 72 5f 6c 61 |d char.s|erver_la|
|000028c0| 70 5f 61 64 64 72 5b 38 | 5d 3b 09 2f 2a 20 64 65 |p_addr[8|];./* de|
|000028d0| 66 61 75 6c 74 20 73 65 | 72 76 65 72 20 6c 61 70 |fault se|rver lap|
|000028e0| 20 61 64 64 72 65 73 73 | 20 28 38 20 62 79 74 65 | address| (8 byte|
|000028f0| 73 29 20 2a 2f 0d 09 6c | 6f 6e 67 09 63 6f 6e 66 |s) */..l|ong.conf|
|00002900| 69 67 49 50 41 64 64 72 | 3b 09 2f 2a 20 6d 65 63 |igIPAddr|;./* mec|
|00002910| 68 61 6e 69 73 6d 20 62 | 79 20 77 68 69 63 68 20 |hanism b|y which |
|00002920| 49 50 20 61 64 64 72 20 | 77 61 73 20 6f 62 74 61 |IP addr |was obta|
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|00002940| 6e 66 69 67 4e 65 74 4d | 61 73 6b 3b 09 2f 2a 20 |nfigNetM|ask;./* |
|00002950| 6d 65 63 68 61 6e 69 73 | 6d 20 62 79 20 77 68 69 |mechanis|m by whi|
|00002960| 63 68 20 6e 65 74 20 6d | 61 73 6b 20 77 61 73 20 |ch net m|ask was |
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|00002980| 67 09 64 66 6c 5f 64 79 | 6e 5f 6c 6f 77 3b 09 2f |g.dfl_dy|n_low;./|
|00002990| 2a 20 64 79 6e 61 6d 69 | 63 20 61 64 64 72 65 73 |* dynami|c addres|
|000029a0| 73 20 66 69 65 6c 64 20 | 6c 6f 77 65 72 20 62 6f |s field |lower bo|
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|00004490| 70 61 74 63 68 20 74 61 | 62 6c 65 20 61 6e 64 20 |patch ta|ble and |
|000044a0| 62 61 73 69 63 20 4c 41 | 50 20 70 61 72 61 6d 65 |basic LA|P parame|
|000044b0| 74 65 72 73 2e 20 20 54 | 68 65 20 4c 41 50 5f 49 |ters.  T|he LAP_I|
|000044c0| 6e 66 6f 20 73 74 72 75 | 63 74 75 72 65 20 6d 75 |nfo stru|cture mu|
|000044d0| 73 74 20 62 65 67 69 6e | 20 77 69 74 68 20 74 68 |st begin| with th|
|000044e0| 65 20 66 69 78 65 64 20 | 66 69 65 6c 64 73 20 64 |e fixed |fields d|
|000044f0| 65 66 69 6e 65 64 20 65 | 61 72 6c 69 65 72 3b 20 |efined e|arlier; |
|00004500| 68 6f 77 65 76 65 72 2c | 20 74 68 65 20 4c 41 50 |however,| the LAP|
|00004510| 20 69 73 20 66 72 65 65 | 20 74 6f 20 61 6c 6c 6f | is free| to allo|
|00004520| 63 61 74 65 20 61 64 64 | 69 74 69 6f 6e 61 6c 20 |cate add|itional |
|00004530| 6d 65 6d 6f 72 79 20 66 | 6f 6c 6c 6f 77 69 6e 67 |memory f|ollowing|
|00004540| 20 74 68 69 73 20 66 69 | 78 65 64 20 68 65 61 64 | this fi|xed head|
|00004550| 65 72 20 66 6f 72 20 6f | 74 68 65 72 20 75 73 65 |er for o|ther use|
|00004560| 73 20 73 75 63 68 20 61 | 73 20 62 75 66 66 65 72 |s such a|s buffer|
|00004570| 73 2c 20 41 52 50 20 74 | 61 62 6c 65 73 2c 20 65 |s, ARP t|ables, e|
|00004580| 74 63 2e 20 20 4c 41 50 | 5f 6d 61 69 6e 20 69 73 |tc.  LAP|_main is|
|00004590| 20 6f 6e 6c 79 20 63 61 | 6c 6c 65 64 20 61 74 20 | only ca|lled at |
|000045a0| 74 68 65 20 61 70 70 6c | 69 63 61 74 69 6f 6e 20 |the appl|ication |
|000045b0| 6c 65 76 65 6c 2e 0d 73 | 74 72 75 63 74 20 4c 41 |level..s|truct LA|
|000045c0| 50 49 6e 66 6f 20 2a 4c | 41 50 5f 6d 61 69 6e 28 |PInfo *L|AP_main(|
|000045d0| 29 20 7b 0d 09 73 74 72 | 75 63 74 20 4c 41 50 49 |) {..str|uct LAPI|
|000045e0| 6e 66 6f 20 2a 6c 61 70 | 3b 0d 09 0d 09 6c 61 70 |nfo *lap|;....lap|
|000045f0| 20 3d 20 28 73 74 72 75 | 63 74 20 4c 41 50 49 6e | = (stru|ct LAPIn|
|00004600| 66 6f 20 2a 29 20 4e 65 | 77 50 74 72 28 73 69 7a |fo *) Ne|wPtr(siz|
|00004610| 65 6f 66 28 73 74 72 75 | 63 74 20 4c 41 50 49 6e |eof(stru|ct LAPIn|
|00004620| 66 6f 29 29 3b 0d 09 69 | 66 20 28 6c 61 70 20 21 |fo));..i|f (lap !|
|00004630| 3d 20 6e 69 6c 29 20 7b | 0d 09 09 62 7a 65 72 6f |= nil) {|...bzero|
|00004640| 28 28 50 74 72 29 6c 61 | 70 2c 20 73 69 7a 65 6f |((Ptr)la|p, sizeo|
|00004650| 66 28 73 74 72 75 63 74 | 20 4c 41 50 49 6e 66 6f |f(struct| LAPInfo|
|00004660| 29 29 3b 0d 09 0d 09 09 | 6c 61 70 2d 3e 6c 61 70 |));.....|lap->lap|
|00004670| 49 6e 69 74 20 3d 20 4c | 41 50 5f 69 6e 69 74 3b |Init = L|AP_init;|
|00004680| 0d 09 09 6c 61 70 2d 3e | 6c 61 70 4f 70 65 6e 20 |...lap->|lapOpen |
|00004690| 3d 20 4c 41 50 5f 6f 70 | 65 6e 3b 0d 09 09 6c 61 |= LAP_op|en;...la|
|000046a0| 70 2d 3e 6c 61 70 43 6c | 6f 73 65 20 3d 20 4c 41 |p->lapCl|ose = LA|
|000046b0| 50 5f 63 6c 6f 73 65 3b | 0d 09 09 6c 61 70 2d 3e |P_close;|...lap->|
|000046c0| 6c 61 70 41 74 74 61 63 | 68 20 3d 20 4c 41 50 5f |lapAttac|h = LAP_|
|000046d0| 61 74 74 61 63 68 50 48 | 3b 0d 09 09 6c 61 70 2d |attachPH|;...lap-|
|000046e0| 3e 6c 61 70 44 65 74 61 | 63 68 20 3d 20 4c 41 50 |>lapDeta|ch = LAP|
|000046f0| 5f 64 65 74 61 63 68 50 | 48 3b 0d 09 09 6c 61 70 |_detachP|H;...lap|
|00004700| 2d 3e 6c 61 70 4f 75 74 | 70 75 74 20 3d 20 4c 41 |->lapOut|put = LA|
|00004710| 50 5f 77 72 69 74 65 3b | 0d 09 09 6c 61 70 2d 3e |P_write;|...lap->|
|00004720| 6c 61 70 43 6f 6e 74 72 | 6f 6c 20 3d 20 4c 41 50 |lapContr|ol = LAP|
|00004730| 5f 63 6f 6e 74 72 6f 6c | 3b 0d 09 09 6c 61 70 2d |_control|;...lap-|
|00004740| 3e 6c 61 70 46 61 75 6c | 74 20 3d 20 4c 41 50 5f |>lapFaul|t = LAP_|
|00004750| 66 61 75 6c 74 3b 0d 09 | 09 6c 61 70 2d 3e 6c 61 |fault;..|.lap->la|
|00004760| 70 52 65 67 69 73 74 65 | 72 20 3d 20 4c 41 50 5f |pRegiste|r = LAP_|
|00004770| 72 65 67 69 73 74 65 72 | 3b 0d 09 09 6c 61 70 2d |register|;...lap-|
|00004780| 3e 6c 61 70 50 72 6f 62 | 65 20 3d 20 4c 41 50 5f |>lapProb|e = LAP_|
|00004790| 70 72 6f 62 65 3b 0d 09 | 09 6c 61 70 2d 3e 6c 61 |probe;..|.lap->la|
|000047a0| 70 43 6f 6e 66 69 67 75 | 72 65 20 3d 20 4c 41 50 |pConfigu|re = LAP|
|000047b0| 5f 63 6f 6e 66 69 67 75 | 72 65 3b 0d 09 09 6c 61 |_configu|re;...la|
|000047c0| 70 2d 3e 6c 61 70 53 74 | 61 74 69 73 74 69 63 73 |p->lapSt|atistics|
|000047d0| 20 3d 20 4c 41 50 5f 73 | 74 61 74 69 73 74 69 63 | = LAP_s|tatistic|
|000047e0| 73 3b 0d 09 09 6c 61 70 | 2d 3e 6c 61 70 46 69 6e |s;...lap|->lapFin|
|000047f0| 64 47 61 74 65 77 61 79 | 20 3d 20 6e 69 6c 3b 0d |dGateway| = nil;.|
|00004800| 09 09 6c 61 70 2d 3e 6c | 61 70 47 77 79 43 68 65 |..lap->l|apGwyChe|
|00004810| 63 6b 20 3d 20 6e 69 6c | 3b 0d 09 09 0d 09 09 6c |ck = nil|;......l|
|00004820| 61 70 2d 3e 68 65 61 64 | 65 72 53 69 7a 65 20 3d |ap->head|erSize =|
|00004830| 20 73 69 7a 65 6f 66 28 | 73 74 72 75 63 74 20 4c | sizeof(|struct L|
|00004840| 41 50 5f 68 65 61 64 65 | 72 29 3b 0d 09 09 6c 61 |AP_heade|r);...la|
|00004850| 70 2d 3e 6f 75 74 4d 61 | 78 50 61 63 6b 65 74 53 |p->outMa|xPacketS|
|00004860| 69 7a 65 20 3d 20 4d 41 | 58 5f 4c 41 50 5f 50 4b |ize = MA|X_LAP_PK|
|00004870| 54 3b 0d 09 09 6c 61 70 | 2d 3e 69 6e 4d 61 78 50 |T;...lap|->inMaxP|
|00004880| 61 63 6b 65 74 53 69 7a | 65 20 3d 20 4d 41 58 5f |acketSiz|e = MAX_|
|00004890| 4c 41 50 5f 50 4b 54 3b | 0d 09 09 6c 61 70 2d 3e |LAP_PKT;|...lap->|
|000048a0| 6d 61 78 44 61 74 61 53 | 69 7a 65 20 3d 20 4d 41 |maxDataS|ize = MA|
|000048b0| 58 5f 4c 41 50 5f 50 4b | 54 20 2d 20 73 69 7a 65 |X_LAP_PK|T - size|
|000048c0| 6f 66 28 73 74 72 75 63 | 74 20 4c 41 50 5f 68 65 |of(struc|t LAP_he|
|000048d0| 61 64 65 72 29 3b 0d 09 | 09 0d 09 09 6c 61 70 2d |ader);..|....lap-|
|000048e0| 3e 6c 61 70 54 79 70 65 | 20 3d 20 41 52 50 5f 4c |>lapType| = ARP_L|
|000048f0| 41 50 3b 0d 09 09 6c 61 | 70 2d 3e 6c 61 70 41 64 |AP;...la|p->lapAd|
|00004900| 64 72 4c 65 6e 67 74 68 | 20 3d 20 73 69 7a 65 6f |drLength| = sizeo|
|00004910| 66 28 73 74 72 75 63 74 | 20 4c 41 50 5f 61 64 64 |f(struct| LAP_add|
|00004920| 72 29 3b 0d 09 09 6c 61 | 70 2d 3e 6c 61 70 41 64 |r);...la|p->lapAd|
|00004930| 64 72 50 74 72 20 3d 20 | 28 50 74 72 29 20 26 6c |drPtr = |(Ptr) &l|
|00004940| 61 70 2d 3e 6f 75 72 5f | 6c 61 70 5f 61 64 64 72 |ap->our_|lap_addr|
|00004950| 3b 0d 09 09 0d 09 09 6c | 61 70 2d 3e 6c 61 70 5f |;......l|ap->lap_|
|00004960| 62 72 6f 61 64 63 61 73 | 74 5f 61 64 64 72 2e 65 |broadcas|t_addr.e|
|00004970| 6e 5f 68 69 20 3d 20 30 | 78 46 46 46 46 3b 0d 09 |n_hi = 0|xFFFF;..|
|00004980| 09 6c 61 70 2d 3e 6c 61 | 70 5f 62 72 6f 61 64 63 |.lap->la|p_broadc|
|00004990| 61 73 74 5f 61 64 64 72 | 2e 65 6e 5f 6c 6f 20 3d |ast_addr|.en_lo =|
|000049a0| 20 30 78 46 46 46 46 46 | 46 46 46 3b 0d 09 09 0d | 0xFFFFF|FFF;....|
|000049b0| 09 09 6c 61 70 2d 3e 69 | 70 47 6c 6f 62 61 6c 73 |..lap->i|pGlobals|
|000049c0| 20 3d 20 47 65 74 41 35 | 28 29 3b 0d 09 09 6c 61 | = GetA5|();...la|
|000049d0| 70 2d 3e 61 64 64 72 65 | 73 73 43 6f 6e 66 6c 69 |p->addre|ssConfli|
|000049e0| 63 74 20 3d 20 66 61 6c | 73 65 3b 0d 09 09 53 65 |ct = fal|se;...Se|
|000049f0| 74 4c 41 50 50 74 72 28 | 6c 61 70 29 3b 0d 09 09 |tLAPPtr(|lap);...|
|00004a00| 7d 0d 09 72 65 74 75 72 | 6e 28 6c 61 70 29 3b 0d |}..retur|n(lap);.|
|00004a10| 09 7d 0d 4f 53 45 72 72 | 20 4c 41 50 5f 69 6e 69 |.}.OSErr| LAP_ini|
|00004a20| 74 28 6c 61 70 2c 20 74 | 72 61 6e 73 69 74 69 6f |t(lap, t|ransitio|
|00004a30| 6e 50 72 6f 63 29 0d 4c | 41 50 5f 69 6e 69 74 20 |nProc).L|AP_init |
|00004a40| 69 73 20 63 61 6c 6c 65 | 64 20 62 79 20 49 50 20 |is calle|d by IP |
|00004a50| 77 68 65 6e 20 74 68 65 | 20 4d 61 63 54 43 50 20 |when the| MacTCP |
|00004a60| 64 72 69 76 65 72 20 69 | 73 20 66 69 72 73 74 20 |driver i|s first |
|00004a70| 6f 70 65 6e 65 64 2e 20 | 20 4c 41 50 5f 69 6e 69 |opened. | LAP_ini|
|00004a80| 74 20 6d 75 73 74 20 6f | 70 65 6e 20 74 68 65 20 |t must o|pen the |
|00004a90| 6c 69 6e 6b 20 68 61 72 | 64 77 61 72 65 20 64 72 |link har|dware dr|
|00004aa0| 69 76 65 72 73 2c 20 74 | 61 6b 69 6e 67 20 69 6e |ivers, t|aking in|
|00004ab0| 74 6f 20 61 63 63 6f 75 | 6e 74 20 74 68 65 20 64 |to accou|nt the d|
|00004ac0| 69 66 66 65 72 65 6e 63 | 65 73 20 62 65 74 77 65 |ifferenc|es betwe|
|00004ad0| 65 6e 20 73 79 73 74 65 | 6d 73 20 77 69 74 68 20 |en syste|ms with |
|00004ae0| 73 6c 6f 74 73 20 61 6e | 64 20 74 68 6f 73 65 20 |slots an|d those |
|00004af0| 77 69 74 68 6f 75 74 2c | 20 61 6e 64 20 64 6f 20 |without,| and do |
|00004b00| 61 6e 79 20 6f 74 68 65 | 72 20 69 6e 69 74 69 61 |any othe|r initia|
|00004b10| 6c 69 7a 61 74 69 6f 6e | 20 77 6f 72 6b 2e 20 20 |lization| work.  |
|00004b20| 54 68 65 20 64 69 73 63 | 6f 6e 6e 65 63 74 50 72 |The disc|onnectPr|
|00004b30| 6f 63 20 69 73 20 74 6f | 20 62 65 20 75 73 65 64 |oc is to| be used|
|00004b40| 20 6d 61 69 6e 6c 79 20 | 77 69 74 68 20 6c 69 6e | mainly |with lin|
|00004b50| 6b 20 69 6e 74 65 72 66 | 61 63 65 73 20 74 68 61 |k interf|aces tha|
|00004b60| 74 20 6d 61 79 20 73 68 | 75 74 20 64 6f 77 6e 20 |t may sh|ut down |
|00004b70| 6f 76 65 72 20 74 69 6d | 65 2e 20 20 41 20 73 65 |over tim|e.  A se|
|00004b80| 72 69 61 6c 20 6c 69 6e | 65 20 69 73 20 61 6e 20 |rial lin|e is an |
|00004b90| 65 78 61 6d 70 6c 65 20 | 6f 66 20 73 75 63 68 20 |example |of such |
|00004ba0| 61 6e 20 69 6e 74 65 72 | 66 61 63 65 2e 20 20 53 |an inter|face.  S|
|00004bb0| 65 65 20 74 68 65 20 73 | 65 63 74 69 6f 6e 20 6f |ee the s|ection o|
|00004bc0| 6e 20 73 65 72 69 61 6c | 20 63 6f 6e 6e 65 63 74 |n serial| connect|
|00004bd0| 69 6f 6e 73 20 66 6f 72 | 20 6d 6f 72 65 20 64 65 |ions for| more de|
|00004be0| 74 61 69 6c 73 20 6f 6e | 20 68 6f 77 20 74 68 69 |tails on| how thi|
|00004bf0| 73 20 70 72 6f 63 65 64 | 75 72 65 20 73 68 6f 75 |s proced|ure shou|
|00004c00| 6c 64 20 62 65 20 75 73 | 65 64 2e 20 20 4c 41 50 |ld be us|ed.  LAP|
|00004c10| 5f 69 6e 69 74 20 69 73 | 20 63 61 6c 6c 65 64 20 |_init is| called |
|00004c20| 61 74 20 74 68 65 20 61 | 70 70 6c 69 63 61 74 69 |at the a|pplicati|
|00004c30| 6f 6e 20 6c 65 76 65 6c | 2e 0d 4f 53 45 72 72 20 |on level|..OSErr |
|00004c40| 4c 41 50 5f 69 6e 69 74 | 28 6c 61 70 2c 20 74 72 |LAP_init|(lap, tr|
|00004c50| 61 6e 73 69 74 69 6f 6e | 50 72 6f 63 29 0d 73 74 |ansition|Proc).st|
|00004c60| 72 75 63 74 20 4c 41 50 | 49 6e 66 6f 20 2a 6c 61 |ruct LAP|Info *la|
|00004c70| 70 3b 0d 50 72 6f 63 50 | 74 72 20 74 72 61 6e 73 |p;.ProcP|tr trans|
|00004c80| 69 74 69 6f 6e 50 72 6f | 63 3b 0d 7b 0d 09 73 74 |itionPro|c;.{..st|
|00004c90| 72 75 63 74 20 53 70 42 | 6c 6f 63 6b 20 73 62 3b |ruct SpB|lock sb;|
|00004ca0| 0d 09 73 74 72 75 63 74 | 20 53 6c 6f 74 44 65 76 |..struct| SlotDev|
|00004cb0| 50 61 72 61 6d 20 78 70 | 62 3b 0d 09 4f 53 45 72 |Param xp|b;..OSEr|
|00004cc0| 72 09 72 63 20 3d 20 2d | 31 3b 0d 09 6c 61 70 2d |r.rc = -|1;..lap-|
|00004cd0| 3e 69 70 5f 70 68 20 3d | 20 6e 69 6c 3b 0d 09 69 |>ip_ph =| nil;..i|
|00004ce0| 66 20 28 4e 47 65 74 54 | 72 61 70 41 64 64 72 65 |f (NGetT|rapAddre|
|00004cf0| 73 73 28 53 6c 6f 74 4d | 61 6e 61 67 65 2c 4f 53 |ss(SlotM|anage,OS|
|00004d00| 54 72 61 70 29 20 21 3d | 20 0d 09 09 4e 47 65 74 |Trap) !=| ...NGet|
|00004d10| 54 72 61 70 41 64 64 72 | 65 73 73 28 55 6e 69 6d |TrapAddr|ess(Unim|
|00004d20| 70 6c 54 72 61 70 2c 4f | 53 54 72 61 70 29 29 20 |plTrap,O|STrap)) |
|00004d30| 7b 20 0d 09 09 2f 2a 20 | 72 75 6e 6e 69 6e 67 20 |{ .../* |running |
|00004d40| 6f 6e 20 61 20 73 79 73 | 74 65 6d 20 77 69 74 68 |on a sys|tem with|
|00004d50| 20 61 20 73 6c 6f 74 20 | 6d 61 6e 61 67 65 72 2c | a slot |manager,|
|00004d60| 20 64 65 74 65 72 6d 69 | 6e 65 20 77 68 69 63 68 | determi|ne which|
|00004d70| 20 73 6c 6f 74 20 63 61 | 72 64 20 69 73 20 69 6e | slot ca|rd is in|
|00004d80| 20 2a 2f 0d 09 09 2f 2a | 20 73 65 61 72 63 68 20 | */.../*| search |
|00004d90| 74 68 72 6f 75 67 68 20 | 4e 75 62 75 73 20 66 6f |through |Nubus fo|
|00004da0| 72 20 74 68 65 20 66 69 | 72 73 74 20 6e 65 74 77 |r the fi|rst netw|
|00004db0| 6f 72 6b 69 6e 67 20 63 | 61 72 64 20 2a 2f 0d 09 |orking c|ard */..|
|00004dc0| 09 62 7a 65 72 6f 28 28 | 63 68 61 72 20 2a 29 26 |.bzero((|char *)&|
|00004dd0| 73 62 2c 20 73 69 7a 65 | 6f 66 28 73 62 29 29 3b |sb, size|of(sb));|
|00004de0| 0d 09 09 73 62 2e 73 70 | 53 6c 6f 74 20 3d 20 6c |...sb.sp|Slot = l|
|00004df0| 61 70 2d 3e 6c 63 2e 73 | 6c 6f 74 3b 0d 09 09 73 |ap->lc.s|lot;...s|
|00004e00| 62 2e 73 70 43 61 74 65 | 67 6f 72 79 20 3d 20 63 |b.spCate|gory = c|
|00004e10| 61 74 4e 65 74 77 6f 72 | 6b 3b 0d 09 09 73 62 2e |atNetwor|k;...sb.|
|00004e20| 73 70 43 54 79 70 65 20 | 3d 20 74 79 70 65 45 74 |spCType |= typeEt|
|00004e30| 68 65 72 4e 65 74 3b 0d | 09 09 73 62 2e 73 70 54 |herNet;.|..sb.spT|
|00004e40| 42 4d 61 73 6b 20 3d 20 | 73 70 44 72 76 72 53 57 |BMask = |spDrvrSW|
|00004e50| 4d 61 73 6b 20 7c 20 73 | 70 44 72 76 72 48 57 4d |Mask | s|pDrvrHWM|
|00004e60| 61 73 6b 3b 0d 09 09 72 | 63 20 3d 20 53 4e 65 78 |ask;...r|c = SNex|
|00004e70| 74 54 79 70 65 53 52 73 | 72 63 28 26 73 62 29 3b |tTypeSRs|rc(&sb);|
|00004e80| 0d 09 09 69 66 20 28 28 | 6c 61 70 2d 3e 6c 63 2e |...if ((|lap->lc.|
|00004e90| 73 6c 6f 74 20 21 3d 20 | 30 29 20 26 26 20 28 73 |slot != |0) && (s|
|00004ea0| 62 2e 73 70 53 6c 6f 74 | 20 21 3d 20 6c 61 70 2d |b.spSlot| != lap-|
|00004eb0| 3e 6c 63 2e 73 6c 6f 74 | 29 29 20 7b 0d 09 09 09 |>lc.slot|)) {....|
|00004ec0| 2f 2a 20 73 6c 6f 74 20 | 6f 66 20 6e 65 74 77 6f |/* slot |of netwo|
|00004ed0| 72 6b 20 63 61 72 64 20 | 61 73 20 73 65 74 20 62 |rk card |as set b|
|00004ee0| 79 20 43 6f 6e 74 72 6f | 6c 20 50 61 6e 65 6c 2c |y Contro|l Panel,|
|00004ef0| 20 69 73 6e d5 74 20 76 | 61 6c 69 64 20 2a 2f 0d | isn.t v|alid */.|
|00004f00| 09 09 09 72 63 20 3d 20 | 73 6d 45 6d 70 74 79 53 |...rc = |smEmptyS|
|00004f10| 6c 6f 74 3b 0d 09 09 09 | 7d 0d 09 09 69 66 20 28 |lot;....|}...if (|
|00004f20| 72 63 20 3d 3d 20 6e 6f | 45 72 72 29 20 7b 0d 09 |rc == no|Err) {..|
|00004f30| 09 09 2f 2a 20 6f 70 65 | 6e 20 6c 69 6e 6b 20 68 |../* ope|n link h|
|00004f40| 61 72 64 77 61 72 65 20 | 64 72 69 76 65 72 20 2a |ardware |driver *|
|00004f50| 2f 0d 09 09 09 72 63 20 | 3d 20 4f 70 65 6e 53 6c |/....rc |= OpenSl|
|00004f60| 6f 74 28 28 50 61 72 6d | 42 6c 6b 50 74 72 29 26 |ot((Parm|BlkPtr)&|
|00004f70| 78 70 62 2c 20 66 61 6c | 73 65 29 3b 0d 09 09 09 |xpb, fal|se);....|
|00004f80| 6c 61 70 2d 3e 6c 69 6e | 6b 5f 75 6e 69 74 20 3d |lap->lin|k_unit =|
|00004f90| 20 78 70 62 2e 69 6f 52 | 65 66 4e 75 6d 3b 0d 09 | xpb.ioR|efNum;..|
|00004fa0| 09 09 7d 0d 09 09 7d 0d | 09 69 66 20 28 72 63 20 |..}...}.|.if (rc |
|00004fb0| 21 3d 20 6e 6f 45 72 72 | 29 20 7b 0d 09 09 2f 2a |!= noErr|) {.../*|
|00004fc0| 20 72 75 6e 6e 69 6e 67 | 20 6f 6e 20 6f 6c 64 65 | running| on olde|
|00004fd0| 72 20 73 79 73 74 65 6d | 2c 20 6a 75 73 74 20 74 |r system|, just t|
|00004fe0| 72 79 20 6f 70 65 6e 69 | 6e 67 20 64 72 69 76 65 |ry openi|ng drive|
|00004ff0| 72 20 75 73 69 6e 67 20 | 69 74 73 20 6e 61 6d 65 |r using |its name|
|00005000| 20 2a 2f 0d 09 09 72 63 | 20 3d 20 50 42 4f 70 65 | */...rc| = PBOpe|
|00005010| 6e 28 28 50 61 72 6d 42 | 6c 6b 50 74 72 29 26 78 |n((ParmB|lkPtr)&x|
|00005020| 70 62 2c 20 66 61 6c 73 | 65 29 3b 0d 09 09 6c 61 |pb, fals|e);...la|
|00005030| 70 2d 3e 6c 69 6e 6b 5f | 75 6e 69 74 20 3d 20 78 |p->link_|unit = x|
|00005040| 70 62 2e 69 6f 52 65 66 | 4e 75 6d 3b 0d 09 09 7d |pb.ioRef|Num;...}|
|00005050| 0d 09 69 66 20 28 72 63 | 20 3d 3d 20 6e 6f 45 72 |..if (rc| == noEr|
|00005060| 72 29 20 7b 0d 09 09 72 | 63 20 3d 20 50 42 43 6f |r) {...r|c = PBCo|
|00005070| 6e 74 72 6f 6c 28 29 3b | 09 2f 2a 20 67 65 74 20 |ntrol();|./* get |
|00005080| 6f 75 72 20 4c 41 50 20 | 61 64 64 72 65 73 73 20 |our LAP |address |
|00005090| 66 72 6f 6d 20 62 6f 61 | 72 64 20 2a 2f 0d 09 09 |from boa|rd */...|
|000050a0| 7d 0d 09 69 66 20 28 72 | 63 20 3d 3d 20 6e 6f 45 |}..if (r|c == noE|
|000050b0| 72 72 29 20 7b 0d 09 09 | 72 63 20 3d 20 50 42 43 |rr) {...|rc = PBC|
|000050c0| 6f 6e 74 72 6f 6c 28 29 | 3b 09 2f 2a 20 61 74 74 |ontrol()|;./* att|
|000050d0| 61 63 68 20 6f 75 72 20 | 70 61 63 6b 65 74 20 72 |ach our |packet r|
|000050e0| 65 61 64 20 68 61 6e 64 | 6c 65 72 20 74 6f 20 74 |ead hand|ler to t|
|000050f0| 68 65 20 64 72 69 76 65 | 72 20 2a 2f 0d 09 09 7d |he drive|r */...}|
|00005100| 0d 09 69 66 20 28 72 63 | 20 3d 3d 20 6e 6f 45 72 |..if (rc| == noEr|
|00005110| 72 29 20 7b 0d 09 09 72 | 63 20 3d 20 50 42 43 6f |r) {...r|c = PBCo|
|00005120| 6e 74 72 6f 6c 28 29 3b | 09 2f 2a 20 61 74 74 61 |ntrol();|./* atta|
|00005130| 63 68 20 6f 75 72 20 41 | 52 50 20 70 61 63 6b 65 |ch our A|RP packe|
|00005140| 74 20 72 65 61 64 20 68 | 61 6e 64 6c 65 72 20 74 |t read h|andler t|
|00005150| 6f 20 74 68 65 20 64 72 | 69 76 65 72 20 2a 2f 0d |o the dr|iver */.|
|00005160| 09 09 7d 0d 09 69 66 20 | 28 72 63 20 3d 3d 20 6e |..}..if |(rc == n|
|00005170| 6f 45 72 72 29 20 7b 09 | 0d 09 09 72 63 20 3d 20 |oErr) {.|...rc = |
|00005180| 41 52 50 5f 69 6e 69 74 | 28 6c 61 70 29 3b 09 2f |ARP_init|(lap);./|
|00005190| 2a 20 69 6e 69 74 69 61 | 6c 69 7a 65 20 20 41 52 |* initia|lize  AR|
|000051a0| 50 20 68 61 6e 64 6c 65 | 72 20 2a 2f 0d 09 09 7d |P handle|r */...}|
|000051b0| 0d 09 72 65 74 75 72 6e | 28 72 63 29 3b 0d 09 7d |..return|(rc);..}|
|000051c0| 0d 54 68 65 20 74 72 61 | 6e 73 69 74 69 6f 6e 50 |.The tra|nsitionP|
|000051d0| 72 6f 63 20 69 73 20 75 | 73 65 64 20 74 6f 20 69 |roc is u|sed to i|
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|00005290| 6e 73 69 67 6e 65 64 20 | 6c 6f 6e 67 20 4c 61 70 |nsigned |long Lap|
|000052a0| 54 72 61 6e 73 69 74 69 | 6f 6e 28 75 6e 73 69 67 |Transiti|on(unsig|
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|000052c0| 54 68 65 20 66 6f 6c 6c | 6f 77 69 6e 67 20 61 72 |The foll|owing ar|
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|00005350| 69 76 65 72 20 68 61 73 | 20 63 6c 6f 73 65 64 0d |iver has| closed.|
|00005360| 33 09 54 68 65 20 64 72 | 69 76 65 72 20 69 73 20 |3.The dr|iver is |
|00005370| 61 73 6b 69 6e 67 20 74 | 68 65 20 75 70 70 65 72 |asking t|he upper|
|00005380| 20 6c 61 79 65 72 20 70 | 72 6f 74 6f 63 6f 6c 20 | layer p|rotocol |
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|000053a0| 68 74 20 74 6f 20 63 6c | 6f 73 65 20 74 68 65 20 |ht to cl|ose the |
|000053b0| 4c 41 50 3b 20 69 66 20 | 61 20 09 6e 6f 6e 7a 65 |LAP; if |a .nonze|
|000053c0| 72 6f 20 76 61 6c 75 65 | 20 69 73 20 72 65 74 75 |ro value| is retu|
|000053d0| 72 6e 65 64 2c 20 74 68 | 65 20 75 70 70 65 72 20 |rned, th|e upper |
|000053e0| 6c 61 79 65 72 20 70 72 | 6f 74 6f 63 6f 6c 20 68 |layer pr|otocol h|
|000053f0| 61 73 20 64 65 6e 69 65 | 64 20 74 68 65 20 63 6c |as denie|d the cl|
|00005400| 6f 73 65 0d 34 09 54 68 | 65 20 64 72 69 76 65 72 |ose.4.Th|e driver|
|00005410| 20 77 61 73 20 64 65 6e | 69 65 64 20 61 20 63 6c | was den|ied a cl|
|00005420| 6f 73 65 20 72 65 71 75 | 65 73 74 20 62 79 20 61 |ose requ|est by a|
|00005430| 6e 6f 74 68 65 72 20 75 | 70 70 65 72 20 6c 61 79 |nother u|pper lay|
|00005440| 65 72 20 70 72 6f 74 6f | 63 6f 6c 0d 57 68 65 6e |er proto|col.When|
|00005450| 20 4d 61 63 54 43 50 20 | 69 73 20 63 61 6c 6c 65 | MacTCP |is calle|
|00005460| 64 20 77 69 74 68 20 74 | 68 65 20 6c 61 70 20 6f |d with t|he lap o|
|00005470| 70 65 6e 65 64 20 74 72 | 61 6e 73 69 74 69 6f 6e |pened tr|ansition|
|00005480| 20 65 76 65 6e 74 20 61 | 66 74 65 72 20 74 68 65 | event a|fter the|
|00005490| 20 64 72 69 76 65 72 20 | 68 61 73 20 62 65 65 6e | driver |has been|
|000054a0| 20 63 61 6c 6c 65 64 20 | 77 69 74 68 20 74 68 65 | called |with the|
|000054b0| 20 6c 61 70 20 63 6c 6f | 73 65 64 20 74 72 61 6e | lap clo|sed tran|
|000054c0| 73 69 74 69 6f 6e 20 65 | 76 65 6e 74 20 74 68 65 |sition e|vent the|
|000054d0| 20 27 6d 64 65 76 27 20 | 77 69 6c 6c 20 62 65 20 | 'mdev' |will be |
|000054e0| 63 61 6c 6c 65 64 20 69 | 6e 20 74 68 65 20 66 6f |called i|n the fo|
|000054f0| 6c 6c 6f 77 69 6e 67 20 | 6d 61 6e 6e 65 72 2e 0d |llowing |manner..|
|00005500| 41 74 20 53 79 73 74 65 | 6d 54 61 73 6b 20 74 69 |At Syste|mTask ti|
|00005510| 6d 65 20 74 68 65 20 27 | 6d 64 65 76 27 20 69 6e |me the '|mdev' in|
|00005520| 69 74 20 63 61 6c 6c 20 | 77 69 6c 6c 20 62 65 20 |it call |will be |
|00005530| 6d 61 64 65 20 77 69 74 | 68 20 61 20 6e 69 6c 20 |made wit|h a nil |
|00005540| 76 61 6c 75 65 20 66 6f | 72 20 74 68 65 20 74 72 |value fo|r the tr|
|00005550| 61 6e 73 69 74 69 6f 6e | 50 72 6f 63 20 66 6f 6c |ansition|Proc fol|
|00005560| 6c 6f 77 65 64 20 62 79 | 20 74 68 65 20 4c 41 50 |lowed by| the LAP|
|00005570| 5f 63 6f 6e 66 69 67 75 | 72 65 20 63 61 6c 6c 2e |_configu|re call.|
|00005580| 0d 4f 53 45 72 72 20 4c | 41 50 5f 6f 70 65 6e 28 |.OSErr L|AP_open(|
|00005590| 6c 61 70 29 0d 4c 41 50 | 5f 6f 70 65 6e 20 69 73 |lap).LAP|_open is|
|000055a0| 20 6e 6f 74 20 63 75 72 | 72 65 6e 74 6c 79 20 63 | not cur|rently c|
|000055b0| 61 6c 6c 65 64 20 62 79 | 20 74 68 65 20 4d 61 63 |alled by| the Mac|
|000055c0| 54 43 50 20 64 72 69 76 | 65 72 2e 0d 4f 53 45 72 |TCP driv|er..OSEr|
|000055d0| 72 20 4c 41 50 5f 6f 70 | 65 6e 28 6c 61 70 29 0d |r LAP_op|en(lap).|
|000055e0| 73 74 72 75 63 74 20 4c | 41 50 49 6e 66 6f 20 2a |struct L|APInfo *|
|000055f0| 6c 61 70 3b 0d 7b 0d 09 | 72 65 74 75 72 6e 28 6e |lap;.{..|return(n|
|00005600| 6f 45 72 72 29 3b 0d 09 | 7d 0d 4f 53 45 72 72 20 |oErr);..|}.OSErr |
|00005610| 4c 41 50 5f 63 6c 6f 73 | 65 28 6c 61 70 29 0d 4c |LAP_clos|e(lap).L|
|00005620| 41 50 5f 63 6c 6f 73 65 | 20 69 73 20 63 61 6c 6c |AP_close| is call|
|00005630| 65 64 20 62 79 20 49 50 | 20 64 75 72 69 6e 67 20 |ed by IP| during |
|00005640| 64 72 69 76 65 72 20 63 | 6c 6f 73 69 6e 67 20 74 |driver c|losing t|
|00005650| 6f 20 63 6c 6f 73 65 20 | 74 68 65 20 4c 41 50 2e |o close |the LAP.|
|00005660| 20 20 4c 41 50 5f 63 6c | 6f 73 65 20 69 73 20 63 |  LAP_cl|ose is c|
|00005670| 61 6c 6c 65 64 20 61 74 | 20 74 68 65 20 61 70 70 |alled at| the app|
|00005680| 6c 69 63 61 74 69 6f 6e | 20 6c 65 76 65 6c 20 6f |lication| level o|
|00005690| 72 20 73 79 73 74 65 6d | 20 74 61 73 6b 20 74 69 |r system| task ti|
|000056a0| 6d 65 2e 0d 4f 53 45 72 | 72 20 4c 41 50 5f 63 6c |me..OSEr|r LAP_cl|
|000056b0| 6f 73 65 28 6c 61 70 29 | 0d 73 74 72 75 63 74 20 |ose(lap)|.struct |
|000056c0| 4c 41 50 49 6e 66 6f 20 | 2a 6c 61 70 3b 0d 7b 0d |LAPInfo |*lap;.{.|
|000056d0| 09 2f 2a 20 63 6c 6f 73 | 65 20 68 61 72 64 77 61 |./* clos|e hardwa|
|000056e0| 72 65 20 64 72 69 76 65 | 72 2c 20 65 74 63 2e 20 |re drive|r, etc. |
|000056f0| 2a 2f 0d 09 72 65 74 75 | 72 6e 28 6e 6f 45 72 72 |*/..retu|rn(noErr|
|00005700| 29 3b 0d 09 7d 0d 76 6f | 69 64 50 72 6f 63 50 74 |);..}.vo|idProcPt|
|00005710| 72 20 4c 41 50 5f 75 6e | 6c 6f 61 64 28 6c 61 70 |r LAP_un|load(lap|
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|00005770| 20 6f 70 65 6e 65 64 0d | 4f 53 45 72 72 20 4c 41 | opened.|OSErr LA|
|00005780| 50 5f 55 6e 6c 6f 61 64 | 28 6c 61 70 29 0d 73 74 |P_Unload|(lap).st|
|00005790| 72 75 63 74 20 4c 41 50 | 49 6e 66 6f 20 2a 6c 61 |ruct LAP|Info *la|
|000057a0| 70 3b 0d 7b 09 0d 09 44 | 69 73 70 6f 73 50 74 72 |p;.{...D|isposPtr|
|000057b0| 28 28 50 74 72 29 6c 61 | 70 29 3b 0d 09 72 65 74 |((Ptr)la|p);..ret|
|000057c0| 75 72 6e 28 6e 6f 45 72 | 72 29 3b 0d 09 7d 0d 4f |urn(noEr|r);..}.O|
|000057d0| 53 45 72 72 20 4c 41 50 | 5f 61 74 74 61 63 68 50 |SErr LAP|_attachP|
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|00005810| 69 66 79 20 74 68 65 20 | 61 64 64 72 65 73 73 20 |ify the |address |
|00005820| 6f 66 20 74 68 65 20 49 | 50 20 70 61 63 6b 65 74 |of the I|P packet|
|00005830| 20 72 65 63 65 70 74 69 | 6f 6e 20 72 6f 75 74 69 | recepti|on routi|
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|00005860| 6b 6e 6f 77 73 20 68 6f | 77 20 49 50 20 64 61 74 |knows ho|w IP dat|
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|00005890| 69 6e 6b 2e 20 4c 41 50 | 5f 61 74 74 61 63 68 50 |ink. LAP|_attachP|
|000058a0| 48 20 69 73 20 6f 6e 6c | 79 20 63 61 6c 6c 65 64 |H is onl|y called|
|000058b0| 20 61 74 20 61 70 70 6c | 69 63 61 74 69 6f 6e 20 | at appl|ication |
|000058c0| 6c 65 76 65 6c 20 6f 72 | 20 73 79 73 74 65 6d 20 |level or| system |
|000058d0| 74 61 73 6b 20 74 69 6d | 65 2e 0d 4f 53 45 72 72 |task tim|e..OSErr|
|000058e0| 20 4c 41 50 5f 61 74 74 | 61 63 68 50 48 28 6c 61 | LAP_att|achPH(la|
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|00005900| 41 50 49 6e 66 6f 20 2a | 6c 61 70 3b 0d 49 50 50 |APInfo *|lap;.IPP|
|00005910| 48 50 72 6f 63 20 70 74 | 72 3b 0d 7b 0d 09 6c 61 |HProc pt|r;.{..la|
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|00005930| 09 72 65 74 75 72 6e 28 | 6e 6f 45 72 72 29 3b 0d |.return(|noErr);.|
|00005940| 09 7d 0d 74 79 70 65 64 | 65 66 20 76 6f 69 64 20 |.}.typed|ef void |
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|00005cf0| 70 61 72 6d 3b 0d 09 42 | 6f 6f 6c 65 61 6e 09 6c |parm;..B|oolean.l|
|00005d00| 61 70 42 72 6f 61 64 63 | 61 73 74 3b 09 2f 2a 20 |apBroadc|ast;./* |
|00005d10| 4c 41 50 2d 6c 65 76 65 | 6c 20 62 72 6f 61 64 63 |LAP-leve|l broadc|
|00005d20| 61 73 74 20 2a 2f 0d 09 | 42 6f 6f 6c 65 61 6e 09 |ast */..|Boolean.|
|00005d30| 69 70 42 72 6f 61 64 63 | 61 73 74 3b 09 2f 2a 20 |ipBroadc|ast;./* |
|00005d40| 49 50 2d 6c 65 76 65 6c | 20 62 72 6f 61 64 63 61 |IP-level| broadca|
|00005d50| 73 74 20 2a 2f 0d 09 73 | 74 72 75 63 74 20 4c 41 |st */..s|truct LA|
|00005d60| 50 49 6e 66 6f 09 2a 6c | 61 70 3b 09 2f 2a 20 69 |PInfo.*l|ap;./* i|
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|00005d90| 2f 0d 09 73 74 72 75 63 | 74 20 77 64 73 45 6e 74 |/..struc|t wdsEnt|
|00005da0| 72 79 09 6c 61 70 68 64 | 72 3b 09 2f 2a 20 6c 6f |ry.laphd|r;./* lo|
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|00005dc0| 2f 0d 09 73 74 72 75 63 | 74 20 49 50 77 64 73 45 |/..struc|t IPwdsE|
|00005dd0| 6e 74 72 79 09 69 70 3b | 09 2f 2a 20 69 70 20 68 |ntry.ip;|./* ip h|
|00005de0| 65 61 64 65 72 20 2a 2f | 0d 09 73 74 72 75 63 74 |eader */|..struct|
|00005df0| 20 77 64 73 45 6e 74 72 | 79 09 74 70 3b 09 2f 2a | wdsEntr|y.tp;./*|
|00005e00| 20 54 43 50 2f 55 44 50 | 20 6f 72 20 49 43 4d 50 | TCP/UDP| or ICMP|
|00005e10| 20 68 65 61 64 65 72 20 | 2a 2f 0d 09 73 74 72 75 | header |*/..stru|
|00005e20| 63 74 20 77 64 73 45 6e | 74 72 79 09 64 61 74 61 |ct wdsEn|try.data|
|00005e30| 3b 09 2f 2a 20 54 43 50 | 2f 55 44 50 20 64 61 74 |;./* TCP|/UDP dat|
|00005e40| 61 20 2a 2f 0d 7d 3b 0d | 4f 53 45 72 72 20 4c 41 |a */.};.|OSErr LA|
|00005e50| 50 5f 64 65 74 61 63 68 | 50 48 28 6c 61 70 29 0d |P_detach|PH(lap).|
|00005e60| 4c 41 50 5f 64 65 74 61 | 63 68 50 48 20 69 73 20 |LAP_deta|chPH is |
|00005e70| 63 61 6c 6c 65 64 20 62 | 79 20 49 50 20 64 75 72 |called b|y IP dur|
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|00005ea0| 65 20 62 69 6e 64 69 6e | 67 20 74 6f 20 74 68 65 |e bindin|g to the|
|00005eb0| 20 49 50 20 70 61 63 6b | 65 74 20 72 65 63 65 70 | IP pack|et recep|
|00005ec0| 74 69 6f 6e 20 72 6f 75 | 74 69 6e 65 2e 20 20 4c |tion rou|tine.  L|
|00005ed0| 41 50 5f 64 65 74 61 63 | 68 50 48 20 69 73 20 6f |AP_detac|hPH is o|
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|00005ef0| 65 20 61 70 70 6c 69 63 | 61 74 69 6f 6e 20 6c 65 |e applic|ation le|
|00005f00| 76 65 6c 20 6f 72 20 73 | 79 73 74 65 6d 20 74 61 |vel or s|ystem ta|
|00005f10| 73 6b 20 74 69 6d 65 2e | 0d 4f 53 45 72 72 20 4c |sk time.|.OSErr L|
|00005f20| 41 50 5f 64 65 74 61 63 | 68 50 48 28 6c 61 70 29 |AP_detac|hPH(lap)|
|00005f30| 0d 73 74 72 75 63 74 20 | 4c 41 50 49 6e 66 6f 20 |.struct |LAPInfo |
|00005f40| 2a 6c 61 70 3b 0d 7b 0d | 09 6c 61 70 2d 3e 69 70 |*lap;.{.|.lap->ip|
|00005f50| 5f 70 68 20 3d 20 6e 69 | 6c 3b 0d 09 72 65 74 75 |_ph = ni|l;..retu|
|00005f60| 72 6e 28 6e 6f 45 72 72 | 29 3b 0d 09 7d 0d 4f 53 |rn(noErr|);..}.OS|
|00005f70| 45 72 72 20 4c 41 50 5f | 77 72 69 74 65 28 6c 61 |Err LAP_|write(la|
|00005f80| 70 2c 20 64 65 73 74 2c | 20 69 70 62 29 0d 4c 41 |p, dest,| ipb).LA|
|00005f90| 50 5f 77 72 69 74 65 20 | 69 73 20 63 61 6c 6c 65 |P_write |is calle|
|00005fa0| 64 20 62 79 20 49 50 20 | 74 6f 20 69 6e 69 74 69 |d by IP |to initi|
|00005fb0| 61 74 65 20 74 68 65 20 | 74 72 61 6e 73 6d 69 73 |ate the |transmis|
|00005fc0| 73 69 6f 6e 20 6f 66 20 | 61 20 70 61 63 6b 65 74 |sion of |a packet|
|00005fd0| 2e 20 20 50 61 63 6b 65 | 74 73 20 61 72 65 20 66 |.  Packe|ts are f|
|00005fe0| 6f 72 6d 61 74 74 65 64 | 20 61 73 20 61 20 4d 61 |ormatted| as a Ma|
|00005ff0| 63 69 6e 74 6f 73 68 20 | 4f 70 65 72 61 74 69 6e |cintosh |Operatin|
|00006000| 67 20 53 79 73 74 65 6d | 20 49 2f 4f 20 70 61 72 |g System| I/O par|
|00006010| 61 6d 65 74 65 72 20 62 | 6c 6f 63 6b 20 66 6f 6c |ameter b|lock fol|
|00006020| 6c 6f 77 65 64 20 62 79 | 20 61 20 77 72 69 74 65 |lowed by| a write|
|00006030| 20 64 65 73 63 72 69 70 | 74 6f 72 20 73 74 72 75 | descrip|tor stru|
|00006040| 63 74 75 72 65 20 28 57 | 44 53 29 2e 20 20 49 50 |cture (W|DS).  IP|
|00006050| 20 61 75 74 6f 6d 61 74 | 69 63 61 6c 6c 79 20 72 | automat|ically r|
|00006060| 65 73 65 72 76 65 73 20 | 74 68 65 20 66 69 72 73 |eserves |the firs|
|00006070| 74 20 57 44 53 20 65 6e | 74 72 79 20 66 6f 72 20 |t WDS en|try for |
|00006080| 74 68 65 20 4c 41 50 20 | 68 65 61 64 65 72 2e 20 |the LAP |header. |
|00006090| 20 49 6e 20 4d 61 63 54 | 43 50 20 31 2e 31 2c 20 | In MacT|CP 1.1, |
|000060a0| 74 68 69 73 20 57 44 53 | 20 65 6e 74 72 79 20 70 |this WDS| entry p|
|000060b0| 6f 69 6e 74 73 20 74 6f | 20 61 6e 20 61 72 65 61 |oints to| an area|
|000060c0| 20 74 68 61 74 20 69 73 | 20 61 20 6d 61 78 69 6d | that is| a maxim|
|000060d0| 75 6d 20 6f 66 20 34 38 | 20 62 79 74 65 73 20 6c |um of 48| bytes l|
|000060e0| 6f 6e 67 2e 20 20 49 66 | 20 61 20 6c 61 72 67 65 |ong.  If| a large|
|000060f0| 72 20 4c 41 50 20 68 65 | 61 64 65 72 20 69 73 20 |r LAP he|ader is |
|00006100| 6e 65 65 64 65 64 2c 20 | 74 68 65 20 4c 41 50 20 |needed, |the LAP |
|00006110| 77 69 6c 6c 20 6e 65 65 | 64 20 74 6f 20 70 72 6f |will nee|d to pro|
|00006120| 76 69 64 65 20 73 70 61 | 63 65 20 66 72 6f 6d 20 |vide spa|ce from |
|00006130| 69 74 73 20 6f 77 6e 20 | 62 75 66 66 65 72 73 2e |its own |buffers.|
|00006140| 20 20 54 68 65 20 4c 41 | 50 5f 77 72 69 74 65 20 |  The LA|P_write |
|00006150| 69 73 20 72 65 73 70 6f | 6e 73 69 62 6c 65 20 66 |is respo|nsible f|
|00006160| 6f 72 20 68 61 6e 64 6c | 69 6e 67 20 61 6c 6c 20 |or handl|ing all |
|00006170| 61 73 70 65 63 74 73 20 | 6f 66 20 74 72 61 6e 73 |aspects |of trans|
|00006180| 6c 61 74 69 6e 67 20 66 | 72 6f 6d 20 61 6e 20 49 |lating f|rom an I|
|00006190| 50 20 64 65 73 74 69 6e | 61 74 69 6f 6e 20 61 64 |P destin|ation ad|
|000061a0| 64 72 65 73 73 20 74 6f | 20 69 74 73 20 6c 6f 63 |dress to| its loc|
|000061b0| 61 6c 20 6e 65 74 77 6f | 72 6b 20 64 65 73 74 69 |al netwo|rk desti|
|000061c0| 6e 61 74 69 6f 6e 20 61 | 64 64 72 65 73 73 2e 20 |nation a|ddress. |
|000061d0| 20 54 68 69 73 20 69 6e | 63 6c 75 64 65 73 20 63 | This in|cludes c|
|000061e0| 6f 72 72 65 63 74 6c 79 | 20 69 6e 74 65 72 70 72 |orrectly| interpr|
|000061f0| 65 74 74 69 6e 67 20 74 | 68 65 20 49 50 20 62 72 |etting t|he IP br|
|00006200| 6f 61 64 63 61 73 74 20 | 61 64 64 72 65 73 73 20 |oadcast |address |
|00006210| 28 4d 61 63 54 43 50 20 | 6f 6e 6c 79 20 73 65 6e |(MacTCP |only sen|
|00006220| 64 73 20 74 68 65 20 31 | d5 73 20 66 6f 72 6d 29 |ds the 1|.s form)|
|00006230| 20 61 6e 64 20 68 61 6e | 64 6c 69 6e 67 20 70 61 | and han|dling pa|
|00006240| 63 6b 65 74 73 20 61 64 | 64 72 65 73 73 65 64 20 |ckets ad|dressed |
|00006250| 74 6f 20 74 68 65 20 73 | 61 6d 65 20 6e 6f 64 65 |to the s|ame node|
|00006260| 20 69 66 20 74 68 65 20 | 6c 69 6e 6b 20 64 6f 65 | if the |link doe|
|00006270| 73 20 6e 6f 74 20 64 6f | 20 6c 6f 6f 70 62 61 63 |s not do| loopbac|
|00006280| 6b 2e 20 20 4c 41 50 5f | 77 72 69 74 65 20 6d 61 |k.  LAP_|write ma|
|00006290| 79 20 62 65 20 63 61 6c | 6c 65 64 20 61 74 20 69 |y be cal|led at i|
|000062a0| 6e 74 65 72 72 75 70 74 | 20 6c 65 76 65 6c 20 61 |nterrupt| level a|
|000062b0| 6e 64 20 63 61 6e 6e 6f | 74 20 6d 61 6b 65 20 73 |nd canno|t make s|
|000062c0| 79 6e 63 68 72 6f 6e 6f | 75 73 20 73 79 73 74 65 |ynchrono|us syste|
|000062d0| 6d 20 63 61 6c 6c 73 2e | 20 20 4c 41 50 5f 77 72 |m calls.|  LAP_wr|
|000062e0| 69 74 65 20 6d 61 79 20 | 72 65 74 75 72 6e 20 61 |ite may |return a|
|000062f0| 20 6e 65 67 61 74 69 76 | 65 20 65 72 72 6f 72 20 | negativ|e error |
|00006300| 63 6f 64 65 20 75 70 6f | 6e 20 65 72 72 6f 72 3b |code upo|n error;|
|00006310| 20 6f 74 68 65 72 77 69 | 73 65 20 69 74 20 6d 75 | otherwi|se it mu|
|00006320| 73 74 20 72 65 74 75 72 | 6e 20 7a 65 72 6f 2e 0d |st retur|n zero..|
|00006330| 4f 53 45 72 72 20 4c 41 | 50 5f 77 72 69 74 65 28 |OSErr LA|P_write(|
|00006340| 6c 61 70 2c 20 64 65 73 | 74 2c 20 69 70 62 29 0d |lap, des|t, ipb).|
|00006350| 73 74 72 75 63 74 20 4c | 41 50 49 6e 66 6f 20 2a |struct L|APInfo *|
|00006360| 6c 61 70 3b 0d 69 70 5f | 61 64 64 72 20 64 65 73 |lap;.ip_|addr des|
|00006370| 74 3b 0d 73 74 72 75 63 | 74 20 69 70 62 75 66 20 |t;.struc|t ipbuf |
|00006380| 2a 69 70 62 3b 0d 7b 0d | 09 73 74 72 75 63 74 20 |*ipb;.{.|.struct |
|00006390| 4c 41 50 5f 68 65 61 64 | 65 72 20 2a 65 6e 5f 68 |LAP_head|er *en_h|
|000063a0| 64 72 3b 0d 09 73 74 72 | 75 63 74 20 61 72 70 5f |dr;..str|uct arp_|
|000063b0| 69 6e 66 6f 20 2a 61 72 | 70 3b 0d 09 73 74 72 75 |info *ar|p;..stru|
|000063c0| 63 74 20 4c 41 50 5f 61 | 64 64 72 20 2a 65 6e 61 |ct LAP_a|ddr *ena|
|000063d0| 3b 0d 09 4f 53 45 72 72 | 20 72 63 3b 0d 09 0d 09 |;..OSErr| rc;....|
|000063e0| 65 6e 5f 68 64 72 20 3d | 20 28 73 74 72 75 63 74 |en_hdr =| (struct|
|000063f0| 20 4c 41 50 5f 68 65 61 | 64 65 72 20 2a 29 69 70 | LAP_hea|der *)ip|
+--------+-------------------------+-------------------------+--------+--------+
Only 25.0 KB of data is shown above.