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+--------+-------------------------+-------------------------+--------+--------+
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|00000f20| 70 20 68 65 61 64 65 72 | 20 63 6f 6d 70 72 65 73 |p header| compres|
|00000f30| 73 69 6f 6e 3b 20 6d 6f | 72 65 20 75 6e 69 66 69 |sion; mo|re unifi|
|00000f40| 65 64 20 69 6f 63 74 6c | 73 0a 20 2a 2f 0a 0a 2f |ed ioctl|s. */../|
|00000f50| 2a 20 24 48 65 61 64 65 | 72 3a 20 69 66 5f 73 6c |* $Heade|r: if_sl|
|00000f60| 2e 63 2c 76 20 31 2e 31 | 32 20 38 35 2f 31 32 2f |.c,v 1.1|2 85/12/|
|00000f70| 32 30 20 32 31 3a 35 34 | 3a 35 35 20 63 68 72 69 |20 21:54|:55 chri|
|00000f80| 73 20 45 78 70 20 24 20 | 2a 2f 0a 2f 2a 20 66 72 |s Exp $ |*/./* fr|
|00000f90| 6f 6d 20 69 66 5f 73 6c | 2e 63 2c 76 20 31 2e 31 |om if_sl|.c,v 1.1|
|00000fa0| 31 20 38 34 2f 31 30 2f | 30 34 20 31 32 3a 35 34 |1 84/10/|04 12:54|
|00000fb0| 3a 34 37 20 72 69 63 6b | 20 45 78 70 20 2a 2f 0a |:47 rick| Exp */.|
|00000fc0| 0a 23 69 6e 63 6c 75 64 | 65 20 22 70 70 70 2e 68 |.#includ|e "ppp.h|
|00000fd0| 22 0a 23 69 66 20 4e 50 | 50 50 20 3e 20 30 0a 0a |".#if NP|PP > 0..|
|00000fe0| 23 64 65 66 69 6e 65 20 | 56 4a 43 0a 0a 23 69 6e |#define |VJC..#in|
|00000ff0| 63 6c 75 64 65 20 22 70 | 61 72 61 6d 2e 68 22 0a |clude "p|aram.h".|
|00001000| 23 69 6e 63 6c 75 64 65 | 20 22 70 72 6f 63 2e 68 |#include| "proc.h|
|00001010| 22 0a 23 69 6e 63 6c 75 | 64 65 20 22 6d 62 75 66 |".#inclu|de "mbuf|
|00001020| 2e 68 22 0a 23 69 6e 63 | 6c 75 64 65 20 22 62 75 |.h".#inc|lude "bu|
|00001030| 66 2e 68 22 0a 23 69 6e | 63 6c 75 64 65 20 22 64 |f.h".#in|clude "d|
|00001040| 6b 73 74 61 74 2e 68 22 | 0a 23 69 6e 63 6c 75 64 |kstat.h"|.#includ|
|00001050| 65 20 22 73 6f 63 6b 65 | 74 2e 68 22 0a 23 69 6e |e "socke|t.h".#in|
|00001060| 63 6c 75 64 65 20 22 69 | 6f 63 74 6c 2e 68 22 0a |clude "i|octl.h".|
|00001070| 23 69 6e 63 6c 75 64 65 | 20 22 66 69 6c 65 2e 68 |#include| "file.h|
|00001080| 22 0a 23 69 6e 63 6c 75 | 64 65 20 22 74 74 79 2e |".#inclu|de "tty.|
|00001090| 68 22 0a 23 69 6e 63 6c | 75 64 65 20 22 6b 65 72 |h".#incl|ude "ker|
|000010a0| 6e 65 6c 2e 68 22 0a 23 | 69 6e 63 6c 75 64 65 20 |nel.h".#|include |
|000010b0| 22 63 6f 6e 66 2e 68 22 | 0a 0a 23 69 6e 63 6c 75 |"conf.h"|..#inclu|
|000010c0| 64 65 20 22 69 66 2e 68 | 22 0a 23 69 6e 63 6c 75 |de "if.h|".#inclu|
|000010d0| 64 65 20 22 69 66 5f 74 | 79 70 65 73 2e 68 22 0a |de "if_t|ypes.h".|
|000010e0| 23 69 6e 63 6c 75 64 65 | 20 22 6e 65 74 69 73 72 |#include| "netisr|
|000010f0| 2e 68 22 0a 23 69 6e 63 | 6c 75 64 65 20 22 72 6f |.h".#inc|lude "ro|
|00001100| 75 74 65 2e 68 22 0a 23 | 69 66 20 49 4e 45 54 0a |ute.h".#|if INET.|
|00001110| 23 69 6e 63 6c 75 64 65 | 20 22 2e 2e 2f 6e 65 74 |#include| "../net|
|00001120| 69 6e 65 74 2f 69 6e 2e | 68 22 0a 23 69 6e 63 6c |inet/in.|h".#incl|
|00001130| 75 64 65 20 22 2e 2e 2f | 6e 65 74 69 6e 65 74 2f |ude "../|netinet/|
|00001140| 69 6e 5f 73 79 73 74 6d | 2e 68 22 0a 23 69 6e 63 |in_systm|.h".#inc|
|00001150| 6c 75 64 65 20 22 2e 2e | 2f 6e 65 74 69 6e 65 74 |lude "..|/netinet|
|00001160| 2f 69 6e 5f 76 61 72 2e | 68 22 0a 23 69 6e 63 6c |/in_var.|h".#incl|
|00001170| 75 64 65 20 22 2e 2e 2f | 6e 65 74 69 6e 65 74 2f |ude "../|netinet/|
|00001180| 69 70 2e 68 22 0a 23 65 | 6c 73 65 0a 23 65 6e 64 |ip.h".#e|lse.#end|
|00001190| 69 66 0a 0a 23 69 66 64 | 65 66 20 56 4a 43 0a 23 |if..#ifd|ef VJC.#|
|000011a0| 64 65 66 69 6e 65 09 48 | 44 52 4f 46 46 09 28 36 |define.H|DROFF.(6|
|000011b0| 34 29 0a 23 69 6e 63 6c | 75 64 65 20 22 73 6c 63 |4).#incl|ude "slc|
|000011c0| 6f 6d 70 72 65 73 73 2e | 68 22 0a 23 65 6c 73 65 |ompress.|h".#else|
|000011d0| 0a 23 64 65 66 69 6e 65 | 09 48 44 52 4f 46 46 09 |.#define|.HDROFF.|
|000011e0| 28 30 29 0a 23 65 6e 64 | 69 66 0a 0a 23 69 6e 63 |(0).#end|if..#inc|
|000011f0| 6c 75 64 65 20 22 69 66 | 5f 70 70 70 2e 68 22 0a |lude "if|_ppp.h".|
|00001200| 0a 73 74 72 75 63 74 20 | 70 70 70 5f 73 6f 66 74 |.struct |ppp_soft|
|00001210| 63 20 70 70 70 5f 73 6f | 66 74 63 5b 4e 50 50 50 |c ppp_so|ftc[NPPP|
|00001220| 5d 3b 0a 69 6e 74 20 70 | 70 70 5f 61 73 79 6e 63 |];.int p|pp_async|
|00001230| 5f 6f 75 74 5f 64 65 62 | 75 67 20 3d 20 30 3b 0a |_out_deb|ug = 0;.|
|00001240| 69 6e 74 20 70 70 70 5f | 61 73 79 6e 63 5f 69 6e |int ppp_|async_in|
|00001250| 5f 64 65 62 75 67 20 3d | 20 30 3b 0a 69 6e 74 20 |_debug =| 0;.int |
|00001260| 70 70 70 5f 64 65 62 75 | 67 20 3d 20 31 3b 0a 0a |ppp_debu|g = 1;..|
|00001270| 69 6e 74 20 70 70 70 6f | 75 74 70 75 74 28 29 2c |int pppo|utput(),|
|00001280| 20 70 70 70 69 6f 63 74 | 6c 28 29 3b 0a 0a 2f 2a | pppioct|l();../*|
|00001290| 0a 20 2a 20 43 61 6c 6c | 65 64 20 66 72 6f 6d 20 |. * Call|ed from |
|000012a0| 62 6f 6f 74 20 63 6f 64 | 65 20 74 6f 20 65 73 74 |boot cod|e to est|
|000012b0| 61 62 6c 69 73 68 20 70 | 70 70 20 69 6e 74 65 72 |ablish p|pp inter|
|000012c0| 66 61 63 65 73 2e 0a 20 | 2a 2f 0a 70 70 70 61 74 |faces.. |*/.pppat|
|000012d0| 74 61 63 68 28 29 0a 7b | 0a 09 72 65 67 69 73 74 |tach().{|..regist|
|000012e0| 65 72 20 73 74 72 75 63 | 74 20 70 70 70 5f 73 6f |er struc|t ppp_so|
|000012f0| 66 74 63 20 2a 73 63 3b | 0a 09 72 65 67 69 73 74 |ftc *sc;|..regist|
|00001300| 65 72 20 69 6e 74 20 69 | 20 3d 20 30 3b 0a 0a 09 |er int i| = 0;...|
|00001310| 66 6f 72 20 28 73 63 20 | 3d 20 70 70 70 5f 73 6f |for (sc |= ppp_so|
|00001320| 66 74 63 3b 20 69 20 3c | 20 4e 50 50 50 3b 20 73 |ftc; i <| NPPP; s|
|00001330| 63 2b 2b 29 20 7b 0a 09 | 09 73 63 2d 3e 73 63 5f |c++) {..|.sc->sc_|
|00001340| 69 66 2e 69 66 5f 6e 61 | 6d 65 20 3d 20 22 70 70 |if.if_na|me = "pp|
|00001350| 70 22 3b 0a 09 09 73 63 | 2d 3e 73 63 5f 69 66 2e |p";...sc|->sc_if.|
|00001360| 69 66 5f 75 6e 69 74 20 | 3d 20 69 2b 2b 3b 0a 09 |if_unit |= i++;..|
|00001370| 09 73 63 2d 3e 73 63 5f | 69 66 2e 69 66 5f 6d 74 |.sc->sc_|if.if_mt|
|00001380| 75 20 3d 20 50 50 50 5f | 4d 54 55 3b 0a 09 09 73 |u = PPP_|MTU;...s|
|00001390| 63 2d 3e 73 63 5f 69 66 | 2e 69 66 5f 66 6c 61 67 |c->sc_if|.if_flag|
|000013a0| 73 20 3d 20 49 46 46 5f | 50 4f 49 4e 54 4f 50 4f |s = IFF_|POINTOPO|
|000013b0| 49 4e 54 3b 0a 09 09 73 | 63 2d 3e 73 63 5f 69 66 |INT;...s|c->sc_if|
|000013c0| 2e 69 66 5f 74 79 70 65 | 20 3d 20 49 46 54 5f 50 |.if_type| = IFT_P|
|000013d0| 50 50 3b 0a 09 09 73 63 | 2d 3e 73 63 5f 69 66 2e |PP;...sc|->sc_if.|
|000013e0| 69 66 5f 69 6f 63 74 6c | 20 3d 20 70 70 70 69 6f |if_ioctl| = pppio|
|000013f0| 63 74 6c 3b 0a 09 09 73 | 63 2d 3e 73 63 5f 69 66 |ctl;...s|c->sc_if|
|00001400| 2e 69 66 5f 6f 75 74 70 | 75 74 20 3d 20 70 70 70 |.if_outp|ut = ppp|
|00001410| 6f 75 74 70 75 74 3b 0a | 09 09 73 63 2d 3e 73 63 |output;.|..sc->sc|
|00001420| 5f 69 66 2e 69 66 5f 73 | 6e 64 2e 69 66 71 5f 6d |_if.if_s|nd.ifq_m|
|00001430| 61 78 6c 65 6e 20 3d 20 | 49 46 51 5f 4d 41 58 4c |axlen = |IFQ_MAXL|
|00001440| 45 4e 3b 0a 09 09 73 63 | 2d 3e 73 63 5f 69 6e 71 |EN;...sc|->sc_inq|
|00001450| 2e 69 66 71 5f 6d 61 78 | 6c 65 6e 20 3d 20 49 46 |.ifq_max|len = IF|
|00001460| 51 5f 4d 41 58 4c 45 4e | 3b 0a 09 09 69 66 5f 61 |Q_MAXLEN|;...if_a|
|00001470| 74 74 61 63 68 28 26 73 | 63 2d 3e 73 63 5f 69 66 |ttach(&s|c->sc_if|
|00001480| 29 3b 0a 09 7d 0a 7d 0a | 0a 2f 2a 0a 20 2a 20 4c |);..}.}.|./*. * L|
|00001490| 69 6e 65 20 73 70 65 63 | 69 66 69 63 20 6f 70 65 |ine spec|ific ope|
|000014a0| 6e 20 72 6f 75 74 69 6e | 65 2e 0a 20 2a 20 41 74 |n routin|e.. * At|
|000014b0| 74 61 63 68 20 74 68 65 | 20 67 69 76 65 6e 20 74 |tach the| given t|
|000014c0| 74 79 20 74 6f 20 74 68 | 65 20 66 69 72 73 74 20 |ty to th|e first |
|000014d0| 61 76 61 69 6c 61 62 6c | 65 20 70 70 70 20 75 6e |availabl|e ppp un|
|000014e0| 69 74 2e 0a 20 2a 2f 0a | 2f 2a 20 41 52 47 53 55 |it.. */.|/* ARGSU|
|000014f0| 53 45 44 20 2a 2f 0a 70 | 70 70 6f 70 65 6e 28 64 |SED */.p|ppopen(d|
|00001500| 65 76 2c 20 74 70 29 0a | 09 64 65 76 5f 74 20 64 |ev, tp).|.dev_t d|
|00001510| 65 76 3b 0a 09 72 65 67 | 69 73 74 65 72 20 73 74 |ev;..reg|ister st|
|00001520| 72 75 63 74 20 74 74 79 | 20 2a 74 70 3b 0a 7b 0a |ruct tty| *tp;.{.|
|00001530| 09 73 74 72 75 63 74 20 | 70 72 6f 63 20 2a 70 20 |.struct |proc *p |
|00001540| 3d 20 63 75 72 70 72 6f | 63 3b 09 09 2f 2a 20 58 |= curpro|c;../* X|
|00001550| 58 58 20 2a 2f 0a 09 72 | 65 67 69 73 74 65 72 20 |XX */..r|egister |
|00001560| 73 74 72 75 63 74 20 70 | 70 70 5f 73 6f 66 74 63 |struct p|pp_softc|
|00001570| 20 2a 73 63 3b 0a 09 72 | 65 67 69 73 74 65 72 20 | *sc;..r|egister |
|00001580| 69 6e 74 20 6e 70 70 70 | 3b 0a 09 69 6e 74 20 65 |int nppp|;..int e|
|00001590| 72 72 6f 72 3b 0a 0a 2f | 2a 0a 09 69 66 20 28 65 |rror;../|*..if (e|
|000015a0| 72 72 6f 72 20 3d 20 73 | 75 73 65 72 28 70 2d 3e |rror = s|user(p->|
|000015b0| 70 5f 75 63 72 65 64 2c | 20 26 70 2d 3e 70 5f 61 |p_ucred,| &p->p_a|
|000015c0| 63 66 6c 61 67 29 29 0a | 09 20 20 72 65 74 75 72 |cflag)).|.  retur|
|000015d0| 6e 20 28 65 72 72 6f 72 | 29 3b 0a 2a 2f 0a 0a 09 |n (error|);.*/...|
|000015e0| 69 66 20 28 74 70 2d 3e | 74 5f 6c 69 6e 65 20 3d |if (tp->|t_line =|
|000015f0| 3d 20 50 50 50 44 49 53 | 43 29 0a 09 20 20 72 65 |= PPPDIS|C)..  re|
|00001600| 74 75 72 6e 20 28 30 29 | 3b 0a 0a 09 66 6f 72 20 |turn (0)|;...for |
|00001610| 28 6e 70 70 70 20 3d 20 | 30 2c 20 73 63 20 3d 20 |(nppp = |0, sc = |
|00001620| 70 70 70 5f 73 6f 66 74 | 63 3b 20 6e 70 70 70 20 |ppp_soft|c; nppp |
|00001630| 3c 20 4e 50 50 50 3b 20 | 6e 70 70 70 2b 2b 2c 20 |< NPPP; |nppp++, |
|00001640| 73 63 2b 2b 29 0a 09 09 | 69 66 20 28 73 63 2d 3e |sc++)...|if (sc->|
|00001650| 73 63 5f 74 74 79 70 20 | 3d 3d 20 4e 55 4c 4c 29 |sc_ttyp |== NULL)|
|00001660| 20 7b 0a 09 09 09 73 63 | 2d 3e 73 63 5f 66 6c 61 | {....sc|->sc_fla|
|00001670| 67 73 20 3d 20 30 3b 0a | 09 09 09 73 63 2d 3e 73 |gs = 0;.|...sc->s|
|00001680| 63 5f 69 6c 65 6e 20 3d | 20 30 3b 0a 09 09 09 73 |c_ilen =| 0;....s|
|00001690| 63 2d 3e 73 63 5f 61 73 | 79 6e 63 6d 61 70 20 3d |c->sc_as|yncmap =|
|000016a0| 20 30 78 66 66 66 66 66 | 66 66 66 3b 0a 23 69 66 | 0xfffff|fff;.#if|
|000016b0| 64 65 66 20 56 4a 43 0a | 09 09 09 73 6c 5f 63 6f |def VJC.|...sl_co|
|000016c0| 6d 70 72 65 73 73 5f 69 | 6e 69 74 28 26 73 63 2d |mpress_i|nit(&sc-|
|000016d0| 3e 73 63 5f 63 6f 6d 70 | 29 3b 0a 23 65 6e 64 69 |>sc_comp|);.#endi|
|000016e0| 66 0a 09 09 09 69 66 20 | 28 70 70 70 69 6e 69 74 |f....if |(pppinit|
|000016f0| 28 73 63 29 20 3d 3d 20 | 30 29 20 7b 0a 09 09 09 |(sc) == |0) {....|
|00001700| 09 73 63 2d 3e 73 63 5f | 69 66 2e 69 66 5f 66 6c |.sc->sc_|if.if_fl|
|00001710| 61 67 73 20 26 3d 20 7e | 28 49 46 46 5f 55 50 7c |ags &= ~|(IFF_UP||
|00001720| 49 46 46 5f 52 55 4e 4e | 49 4e 47 29 3b 0a 09 09 |IFF_RUNN|ING);...|
|00001730| 09 09 72 65 74 75 72 6e | 20 28 45 4e 4f 42 55 46 |..return| (ENOBUF|
|00001740| 53 29 3b 0a 09 09 09 7d | 0a 09 09 09 74 70 2d 3e |S);....}|....tp->|
|00001750| 74 5f 73 63 20 3d 20 28 | 63 61 64 64 72 5f 74 29 |t_sc = (|caddr_t)|
|00001760| 73 63 3b 0a 09 09 09 73 | 63 2d 3e 73 63 5f 74 74 |sc;....s|c->sc_tt|
|00001770| 79 70 20 3d 20 74 70 3b | 0a 09 09 09 74 74 79 66 |yp = tp;|....ttyf|
|00001780| 6c 75 73 68 28 74 70 2c | 20 46 52 45 41 44 20 7c |lush(tp,| FREAD ||
|00001790| 20 46 57 52 49 54 45 29 | 3b 0a 09 09 09 73 63 2d | FWRITE)|;....sc-|
|000017a0| 3e 73 63 5f 69 66 2e 69 | 66 5f 66 6c 61 67 73 20 |>sc_if.i|f_flags |
|000017b0| 7c 3d 20 49 46 46 5f 52 | 55 4e 4e 49 4e 47 3b 0a ||= IFF_R|UNNING;.|
|000017c0| 09 09 09 72 65 74 75 72 | 6e 20 28 30 29 3b 0a 09 |...retur|n (0);..|
|000017d0| 09 7d 0a 0a 09 72 65 74 | 75 72 6e 20 28 45 4e 58 |.}...ret|urn (ENX|
|000017e0| 49 4f 29 3b 0a 7d 0a 0a | 2f 2a 0a 20 2a 20 4c 69 |IO);.}..|/*. * Li|
|000017f0| 6e 65 20 73 70 65 63 69 | 66 69 63 20 63 6c 6f 73 |ne speci|fic clos|
|00001800| 65 20 72 6f 75 74 69 6e | 65 2e 0a 20 2a 20 44 65 |e routin|e.. * De|
|00001810| 74 61 63 68 20 74 68 65 | 20 74 74 79 20 66 72 6f |tach the| tty fro|
|00001820| 6d 20 74 68 65 20 70 70 | 70 20 75 6e 69 74 2e 0a |m the pp|p unit..|
|00001830| 20 2a 20 4d 69 6d 69 63 | 73 20 70 61 72 74 20 6f | * Mimic|s part o|
|00001840| 66 20 74 74 79 63 6c 6f | 73 65 28 29 2e 0a 20 2a |f ttyclo|se().. *|
|00001850| 2f 0a 70 70 70 63 6c 6f | 73 65 28 74 70 29 0a 09 |/.pppclo|se(tp)..|
|00001860| 73 74 72 75 63 74 20 74 | 74 79 20 2a 74 70 3b 0a |struct t|ty *tp;.|
|00001870| 7b 0a 09 72 65 67 69 73 | 74 65 72 20 73 74 72 75 |{..regis|ter stru|
|00001880| 63 74 20 70 70 70 5f 73 | 6f 66 74 63 20 2a 73 63 |ct ppp_s|oftc *sc|
|00001890| 3b 0a 09 73 74 72 75 63 | 74 20 6d 62 75 66 20 2a |;..struc|t mbuf *|
|000018a0| 6d 3b 0a 09 69 6e 74 20 | 73 3b 0a 0a 09 74 74 79 |m;..int |s;...tty|
|000018b0| 77 66 6c 75 73 68 28 74 | 70 29 3b 0a 09 73 20 3d |wflush(t|p);..s =|
|000018c0| 20 73 70 6c 69 6d 70 28 | 29 3b 09 09 2f 2a 20 70 | splimp(|);../* p|
|000018d0| 61 72 61 6e 6f 69 64 3b | 20 73 70 6c 6e 65 74 20 |aranoid;| splnet |
|000018e0| 70 72 6f 62 61 62 6c 79 | 20 6f 6b 20 2a 2f 0a 09 |probably| ok */..|
|000018f0| 74 70 2d 3e 74 5f 6c 69 | 6e 65 20 3d 20 30 3b 0a |tp->t_li|ne = 0;.|
|00001900| 09 73 63 20 3d 20 28 73 | 74 72 75 63 74 20 70 70 |.sc = (s|truct pp|
|00001910| 70 5f 73 6f 66 74 63 20 | 2a 29 74 70 2d 3e 74 5f |p_softc |*)tp->t_|
|00001920| 73 63 3b 0a 09 69 66 20 | 28 73 63 20 21 3d 20 4e |sc;..if |(sc != N|
|00001930| 55 4c 4c 29 20 7b 0a 09 | 09 69 66 5f 64 6f 77 6e |ULL) {..|.if_down|
|00001940| 28 26 73 63 2d 3e 73 63 | 5f 69 66 29 3b 0a 09 09 |(&sc->sc|_if);...|
|00001950| 73 63 2d 3e 73 63 5f 74 | 74 79 70 20 3d 20 4e 55 |sc->sc_t|typ = NU|
|00001960| 4c 4c 3b 0a 09 09 74 70 | 2d 3e 74 5f 73 63 20 3d |LL;...tp|->t_sc =|
|00001970| 20 4e 55 4c 4c 3b 0a 09 | 09 6d 5f 66 72 65 65 6d | NULL;..|.m_freem|
|00001980| 28 73 63 2d 3e 73 63 5f | 6d 29 3b 0a 09 09 73 63 |(sc->sc_|m);...sc|
|00001990| 2d 3e 73 63 5f 6d 20 3d | 20 4e 55 4c 4c 3b 0a 09 |->sc_m =| NULL;..|
|000019a0| 09 66 6f 72 20 28 3b 3b | 29 20 7b 0a 09 09 09 49 |.for (;;|) {....I|
|000019b0| 46 5f 44 45 51 55 45 55 | 45 28 26 73 63 2d 3e 73 |F_DEQUEU|E(&sc->s|
|000019c0| 63 5f 69 6e 71 2c 20 6d | 29 3b 0a 09 09 09 69 66 |c_inq, m|);....if|
|000019d0| 20 28 6d 20 3d 3d 20 4e | 55 4c 4c 29 0a 09 09 09 | (m == N|ULL)....|
|000019e0| 09 62 72 65 61 6b 3b 0a | 09 09 09 6d 5f 66 72 65 |.break;.|...m_fre|
|000019f0| 65 6d 28 6d 29 3b 0a 09 | 09 7d 0a 09 09 73 63 2d |em(m);..|.}...sc-|
|00001a00| 3e 73 63 5f 69 66 2e 69 | 66 5f 66 6c 61 67 73 20 |>sc_if.i|f_flags |
|00001a10| 26 3d 20 7e 28 49 46 46 | 5f 55 50 7c 49 46 46 5f |&= ~(IFF|_UP|IFF_|
|00001a20| 52 55 4e 4e 49 4e 47 29 | 3b 0a 09 7d 0a 09 73 70 |RUNNING)|;..}..sp|
|00001a30| 6c 78 28 73 29 3b 0a 7d | 0a 0a 2f 2a 0a 20 2a 20 |lx(s);.}|../*. * |
|00001a40| 4c 69 6e 65 20 73 70 65 | 63 69 66 69 63 20 28 74 |Line spe|cific (t|
|00001a50| 74 79 29 20 72 65 61 64 | 20 72 6f 75 74 69 6e 65 |ty) read| routine|
|00001a60| 2e 0a 20 2a 2f 0a 70 70 | 70 72 65 61 64 28 74 70 |.. */.pp|pread(tp|
|00001a70| 2c 20 75 69 6f 29 0a 09 | 72 65 67 69 73 74 65 72 |, uio)..|register|
|00001a80| 20 73 74 72 75 63 74 20 | 74 74 79 20 2a 74 70 3b | struct |tty *tp;|
|00001a90| 0a 09 73 74 72 75 63 74 | 20 75 69 6f 20 2a 75 69 |..struct| uio *ui|
|00001aa0| 6f 3b 0a 7b 0a 09 72 65 | 67 69 73 74 65 72 20 73 |o;.{..re|gister s|
|00001ab0| 74 72 75 63 74 20 70 70 | 70 5f 73 6f 66 74 63 20 |truct pp|p_softc |
|00001ac0| 2a 73 63 20 3d 20 28 73 | 74 72 75 63 74 20 70 70 |*sc = (s|truct pp|
|00001ad0| 70 5f 73 6f 66 74 63 20 | 2a 29 74 70 2d 3e 74 5f |p_softc |*)tp->t_|
|00001ae0| 73 63 3b 0a 09 73 74 72 | 75 63 74 20 6d 62 75 66 |sc;..str|uct mbuf|
|00001af0| 20 2a 6d 2c 20 2a 6d 30 | 3b 0a 09 72 65 67 69 73 | *m, *m0|;..regis|
|00001b00| 74 65 72 20 69 6e 74 20 | 73 3b 0a 09 69 6e 74 20 |ter int |s;..int |
|00001b10| 65 72 72 6f 72 3b 0a 0a | 09 2f 2a 20 74 68 69 73 |error;..|./* this|
|00001b20| 20 69 73 20 62 6f 67 75 | 73 3b 20 70 75 6c 6c 20 | is bogu|s; pull |
|00001b30| 62 79 74 65 20 6f 75 74 | 20 6f 66 20 72 69 6e 67 |byte out| of ring|
|00001b40| 20 62 75 66 66 65 72 20 | 2a 2f 0a 09 67 65 74 63 | buffer |*/..getc|
|00001b50| 28 26 74 70 2d 3e 74 5f | 63 61 6e 29 3b 0a 0a 09 |(&tp->t_|can);...|
|00001b60| 69 66 20 28 28 74 70 2d | 3e 74 5f 73 74 61 74 65 |if ((tp-|>t_state|
|00001b70| 20 26 20 54 53 5f 43 41 | 52 52 5f 4f 4e 29 3d 3d | & TS_CA|RR_ON)==|
|00001b80| 30 29 0a 09 09 72 65 74 | 75 72 6e 20 28 45 49 4f |0)...ret|urn (EIO|
|00001b90| 29 3b 0a 09 73 20 3d 20 | 73 70 6c 69 6d 70 28 29 |);..s = |splimp()|
|00001ba0| 3b 0a 09 77 68 69 6c 65 | 20 28 73 63 2d 3e 73 63 |;..while| (sc->sc|
|00001bb0| 5f 69 6e 71 2e 69 66 71 | 5f 68 65 61 64 20 3d 3d |_inq.ifq|_head ==|
|00001bc0| 20 4e 55 4c 4c 20 26 26 | 0a 09 20 20 20 20 20 20 | NULL &&|..      |
|00001bd0| 20 74 70 2d 3e 74 5f 6c | 69 6e 65 20 3d 3d 20 50 | tp->t_l|ine == P|
|00001be0| 50 50 44 49 53 43 29 0a | 09 09 69 66 20 28 74 70 |PPDISC).|..if (tp|
|00001bf0| 2d 3e 74 5f 73 74 61 74 | 65 20 26 20 54 53 5f 41 |->t_stat|e & TS_A|
|00001c00| 53 59 4e 43 29 20 7b 0a | 09 09 09 73 70 6c 78 28 |SYNC) {.|...splx(|
|00001c10| 73 29 3b 0a 09 09 09 72 | 65 74 75 72 6e 20 28 45 |s);....r|eturn (E|
|00001c20| 57 4f 55 4c 44 42 4c 4f | 43 4b 29 3b 0a 09 09 7d |WOULDBLO|CK);...}|
|00001c30| 0a 09 09 65 6c 73 65 0a | 09 09 09 73 6c 65 65 70 |...else.|...sleep|
|00001c40| 28 28 63 61 64 64 72 5f | 74 29 26 74 70 2d 3e 74 |((caddr_|t)&tp->t|
|00001c50| 5f 72 61 77 2c 20 54 54 | 49 50 52 49 29 3b 0a 09 |_raw, TT|IPRI);..|
|00001c60| 69 66 20 28 74 70 2d 3e | 74 5f 6c 69 6e 65 20 21 |if (tp->|t_line !|
|00001c70| 3d 20 50 50 50 44 49 53 | 43 29 20 7b 0a 09 09 73 |= PPPDIS|C) {...s|
|00001c80| 70 6c 78 28 73 29 3b 0a | 09 09 72 65 74 75 72 6e |plx(s);.|..return|
|00001c90| 20 28 2d 31 29 3b 0a 09 | 7d 0a 09 49 46 5f 44 45 | (-1);..|}..IF_DE|
|00001ca0| 51 55 45 55 45 28 26 73 | 63 2d 3e 73 63 5f 69 6e |QUEUE(&s|c->sc_in|
|00001cb0| 71 2c 20 6d 29 3b 0a 09 | 73 70 6c 78 28 73 29 3b |q, m);..|splx(s);|
|00001cc0| 0a 0a 09 66 6f 72 20 28 | 6d 30 20 3d 20 6d 3b 20 |...for (|m0 = m; |
|00001cd0| 6d 30 20 26 26 20 75 69 | 6f 2d 3e 75 69 6f 5f 72 |m0 && ui|o->uio_r|
|00001ce0| 65 73 69 64 3b 20 6d 30 | 20 3d 20 6d 30 2d 3e 6d |esid; m0| = m0->m|
|00001cf0| 5f 6e 65 78 74 29 0a 09 | 09 69 66 20 28 65 72 72 |_next)..|.if (err|
|00001d00| 6f 72 20 3d 20 75 69 6f | 6d 6f 76 65 28 6d 74 6f |or = uio|move(mto|
|00001d10| 64 28 6d 2c 20 75 5f 63 | 68 61 72 20 2a 29 2c 20 |d(m, u_c|har *), |
|00001d20| 6d 2d 3e 6d 5f 6c 65 6e | 2c 20 75 69 6f 29 29 0a |m->m_len|, uio)).|
|00001d30| 09 09 09 62 72 65 61 6b | 3b 0a 09 6d 5f 66 72 65 |...break|;..m_fre|
|00001d40| 65 6d 28 6d 29 3b 0a 09 | 72 65 74 75 72 6e 20 28 |em(m);..|return (|
|00001d50| 65 72 72 6f 72 29 3b 0a | 7d 0a 0a 2f 2a 0a 20 2a |error);.|}../*. *|
|00001d60| 20 4c 69 6e 65 20 73 70 | 65 63 69 66 69 63 20 28 | Line sp|ecific (|
|00001d70| 74 74 79 29 20 77 72 69 | 74 65 20 72 6f 75 74 69 |tty) wri|te routi|
|00001d80| 6e 65 2e 0a 20 2a 2f 0a | 70 70 70 77 72 69 74 65 |ne.. */.|pppwrite|
|00001d90| 28 74 70 2c 20 75 69 6f | 29 0a 09 72 65 67 69 73 |(tp, uio|)..regis|
|00001da0| 74 65 72 20 73 74 72 75 | 63 74 20 74 74 79 20 2a |ter stru|ct tty *|
|00001db0| 74 70 3b 0a 09 73 74 72 | 75 63 74 20 75 69 6f 20 |tp;..str|uct uio |
|00001dc0| 2a 75 69 6f 3b 0a 7b 0a | 09 72 65 67 69 73 74 65 |*uio;.{.|.registe|
|00001dd0| 72 20 73 74 72 75 63 74 | 20 70 70 70 5f 73 6f 66 |r struct| ppp_sof|
|00001de0| 74 63 20 2a 73 63 20 3d | 20 28 73 74 72 75 63 74 |tc *sc =| (struct|
|00001df0| 20 70 70 70 5f 73 6f 66 | 74 63 20 2a 29 74 70 2d | ppp_sof|tc *)tp-|
|00001e00| 3e 74 5f 73 63 3b 0a 09 | 73 74 72 75 63 74 20 6d |>t_sc;..|struct m|
|00001e10| 62 75 66 20 2a 6d 2c 20 | 2a 6d 30 2c 20 2a 2a 6d |buf *m, |*m0, **m|
|00001e20| 70 3b 0a 09 73 74 72 75 | 63 74 20 73 6f 63 6b 61 |p;..stru|ct socka|
|00001e30| 64 64 72 20 64 73 74 3b | 0a 09 73 74 72 75 63 74 |ddr dst;|..struct|
|00001e40| 20 70 70 70 5f 68 65 61 | 64 65 72 20 2a 70 68 31 | ppp_hea|der *ph1|
|00001e50| 2c 20 2a 70 68 32 3b 0a | 09 69 6e 74 20 6c 65 6e |, *ph2;.|.int len|
|00001e60| 2c 20 65 72 72 6f 72 3b | 0a 0a 0a 09 69 66 20 28 |, error;|....if (|
|00001e70| 28 74 70 2d 3e 74 5f 73 | 74 61 74 65 20 26 20 54 |(tp->t_s|tate & T|
|00001e80| 53 5f 43 41 52 52 5f 4f | 4e 29 3d 3d 30 29 0a 09 |S_CARR_O|N)==0)..|
|00001e90| 09 72 65 74 75 72 6e 20 | 28 45 49 4f 29 3b 0a 09 |.return |(EIO);..|
|00001ea0| 69 66 20 28 74 70 2d 3e | 74 5f 6c 69 6e 65 20 21 |if (tp->|t_line !|
|00001eb0| 3d 20 50 50 50 44 49 53 | 43 29 0a 09 09 72 65 74 |= PPPDIS|C)...ret|
|00001ec0| 75 72 6e 20 28 2d 31 29 | 3b 0a 09 69 66 20 28 75 |urn (-1)|;..if (u|
|00001ed0| 69 6f 2d 3e 75 69 6f 5f | 72 65 73 69 64 20 3e 20 |io->uio_|resid > |
|00001ee0| 73 63 2d 3e 73 63 5f 69 | 66 2e 69 66 5f 6d 74 75 |sc->sc_i|f.if_mtu|
|00001ef0| 20 2b 20 73 69 7a 65 6f | 66 20 28 73 74 72 75 63 | + sizeo|f (struc|
|00001f00| 74 20 70 70 70 5f 68 65 | 61 64 65 72 29 20 7c 7c |t ppp_he|ader) |||
|00001f10| 0a 09 20 20 20 20 75 69 | 6f 2d 3e 75 69 6f 5f 72 |..    ui|o->uio_r|
|00001f20| 65 73 69 64 20 3c 20 73 | 69 7a 65 6f 66 20 28 73 |esid < s|izeof (s|
|00001f30| 74 72 75 63 74 20 70 70 | 70 5f 68 65 61 64 65 72 |truct pp|p_header|
|00001f40| 29 29 0a 09 09 72 65 74 | 75 72 6e 20 28 45 4d 53 |))...ret|urn (EMS|
|00001f50| 47 53 49 5a 45 29 3b 0a | 09 66 6f 72 20 28 6d 70 |GSIZE);.|.for (mp|
|00001f60| 20 3d 20 26 6d 30 3b 20 | 75 69 6f 2d 3e 75 69 6f | = &m0; |uio->uio|
|00001f70| 5f 72 65 73 69 64 3b 20 | 6d 70 20 3d 20 26 6d 2d |_resid; |mp = &m-|
|00001f80| 3e 6d 5f 6e 65 78 74 29 | 20 7b 0a 09 09 4d 47 45 |>m_next)| {...MGE|
|00001f90| 54 28 6d 2c 20 4d 5f 57 | 41 49 54 2c 20 4d 54 5f |T(m, M_W|AIT, MT_|
|00001fa0| 44 41 54 41 29 3b 0a 09 | 09 69 66 20 28 28 2a 6d |DATA);..|.if ((*m|
|00001fb0| 70 20 3d 20 6d 29 20 3d | 3d 20 4e 55 4c 4c 29 20 |p = m) =|= NULL) |
|00001fc0| 7b 0a 09 09 09 6d 5f 66 | 72 65 65 6d 28 6d 30 29 |{....m_f|reem(m0)|
|00001fd0| 3b 0a 09 09 09 72 65 74 | 75 72 6e 20 28 45 4e 4f |;....ret|urn (ENO|
|00001fe0| 42 55 46 53 29 3b 0a 09 | 09 7d 0a 09 09 69 66 20 |BUFS);..|.}...if |
|00001ff0| 28 75 69 6f 2d 3e 75 69 | 6f 5f 72 65 73 69 64 20 |(uio->ui|o_resid |
|00002000| 3e 3d 20 43 4c 42 59 54 | 45 53 20 2f 20 32 29 20 |>= CLBYT|ES / 2) |
|00002010| 7b 0a 09 09 09 4d 43 4c | 47 45 54 28 6d 2c 20 4d |{....MCL|GET(m, M|
|00002020| 5f 44 4f 4e 54 57 41 49 | 54 29 3b 0a 09 09 7d 0a |_DONTWAI|T);...}.|
|00002030| 09 09 65 6c 73 65 0a 09 | 09 20 20 20 20 6d 2d 3e |..else..|.    m->|
|00002040| 6d 5f 6c 65 6e 20 3d 20 | 4d 4c 45 4e 3b 0a 09 09 |m_len = |MLEN;...|
|00002050| 6c 65 6e 20 3d 20 4d 49 | 4e 28 6d 2d 3e 6d 5f 6c |len = MI|N(m->m_l|
|00002060| 65 6e 2c 20 75 69 6f 2d | 3e 75 69 6f 5f 72 65 73 |en, uio-|>uio_res|
|00002070| 69 64 29 3b 0a 09 09 69 | 66 20 28 65 72 72 6f 72 |id);...i|f (error|
|00002080| 20 3d 20 75 69 6f 6d 6f | 76 65 28 6d 74 6f 64 28 | = uiomo|ve(mtod(|
|00002090| 6d 2c 20 75 5f 63 68 61 | 72 20 2a 29 2c 20 6c 65 |m, u_cha|r *), le|
|000020a0| 6e 2c 20 75 69 6f 29 29 | 20 7b 0a 09 09 09 6d 5f |n, uio))| {....m_|
|000020b0| 66 72 65 65 6d 28 6d 30 | 29 3b 0a 09 09 09 72 65 |freem(m0|);....re|
|000020c0| 74 75 72 6e 20 28 65 72 | 72 6f 72 29 3b 0a 09 09 |turn (er|ror);...|
|000020d0| 7d 0a 09 09 6d 2d 3e 6d | 5f 6c 65 6e 20 3d 20 6c |}...m->m|_len = l|
|000020e0| 65 6e 3b 0a 09 7d 0a 09 | 64 73 74 2e 73 61 5f 66 |en;..}..|dst.sa_f|
|000020f0| 61 6d 69 6c 79 20 3d 20 | 41 46 5f 55 4e 53 50 45 |amily = |AF_UNSPE|
|00002100| 43 3b 0a 09 70 68 31 20 | 3d 20 28 73 74 72 75 63 |C;..ph1 |= (struc|
|00002110| 74 20 70 70 70 5f 68 65 | 61 64 65 72 20 2a 29 20 |t ppp_he|ader *) |
|00002120| 26 64 73 74 2e 73 61 5f | 64 61 74 61 3b 0a 09 70 |&dst.sa_|data;..p|
|00002130| 68 32 20 3d 20 6d 74 6f | 64 28 6d 30 2c 20 73 74 |h2 = mto|d(m0, st|
|00002140| 72 75 63 74 20 70 70 70 | 5f 68 65 61 64 65 72 20 |ruct ppp|_header |
|00002150| 2a 29 3b 0a 09 2a 70 68 | 31 20 3d 20 2a 70 68 32 |*);..*ph|1 = *ph2|
|00002160| 3b 0a 09 6d 30 2d 3e 6d | 5f 64 61 74 61 20 2b 3d |;..m0->m|_data +=|
|00002170| 20 73 69 7a 65 6f 66 20 | 28 73 74 72 75 63 74 20 | sizeof |(struct |
|00002180| 70 70 70 5f 68 65 61 64 | 65 72 29 3b 0a 09 6d 30 |ppp_head|er);..m0|
|00002190| 2d 3e 6d 5f 6c 65 6e 20 | 2d 3d 20 73 69 7a 65 6f |->m_len |-= sizeo|
|000021a0| 66 20 28 73 74 72 75 63 | 74 20 70 70 70 5f 68 65 |f (struc|t ppp_he|
|000021b0| 61 64 65 72 29 3b 0a 09 | 72 65 74 75 72 6e 20 28 |ader);..|return (|
|000021c0| 70 70 70 6f 75 74 70 75 | 74 28 26 73 63 2d 3e 73 |pppoutpu|t(&sc->s|
|000021d0| 63 5f 69 66 2c 20 6d 30 | 2c 20 26 64 73 74 29 29 |c_if, m0|, &dst))|
|000021e0| 3b 0a 7d 0a 0a 23 69 66 | 64 65 66 20 55 4e 55 53 |;.}..#if|def UNUS|
|000021f0| 45 44 0a 2f 2a 0a 20 2a | 20 4c 69 6e 65 20 73 70 |ED./*. *| Line sp|
|00002200| 65 63 69 66 69 63 20 28 | 74 74 79 29 20 73 65 6c |ecific (|tty) sel|
|00002210| 65 63 74 20 72 6f 75 74 | 69 6e 65 2e 0a 20 2a 2f |ect rout|ine.. */|
|00002220| 0a 70 70 70 73 65 6c 65 | 63 74 28 64 65 76 2c 20 |.pppsele|ct(dev, |
|00002230| 72 77 29 0a 09 64 65 76 | 5f 74 20 64 65 76 3b 0a |rw)..dev|_t dev;.|
|00002240| 09 69 6e 74 20 72 77 3b | 0a 7b 0a 09 72 65 67 69 |.int rw;|.{..regi|
|00002250| 73 74 65 72 20 73 74 72 | 75 63 74 20 74 74 79 20 |ster str|uct tty |
|00002260| 2a 74 70 20 3d 20 26 63 | 64 65 76 73 77 5b 6d 61 |*tp = &c|devsw[ma|
|00002270| 6a 6f 72 28 64 65 76 29 | 5d 2e 64 5f 74 74 79 73 |jor(dev)|].d_ttys|
|00002280| 5b 6d 69 6e 6f 72 28 64 | 65 76 29 5d 3b 0a 09 72 |[minor(d|ev)];..r|
|00002290| 65 67 69 73 74 65 72 20 | 73 74 72 75 63 74 20 70 |egister |struct p|
|000022a0| 70 70 5f 73 6f 66 74 63 | 20 2a 73 63 20 3d 20 28 |pp_softc| *sc = (|
|000022b0| 73 74 72 75 63 74 20 70 | 70 70 5f 73 6f 66 74 63 |struct p|pp_softc|
|000022c0| 20 2a 29 74 70 2d 3e 74 | 5f 73 63 3b 0a 09 69 6e | *)tp->t|_sc;..in|
|000022d0| 74 20 73 20 3d 20 73 70 | 6c 74 74 79 28 29 3b 0a |t s = sp|ltty();.|
|000022e0| 0a 09 69 66 20 28 74 70 | 20 3d 3d 20 30 29 0a 09 |..if (tp| == 0)..|
|000022f0| 09 70 61 6e 69 63 28 22 | 74 74 73 65 6c 65 63 74 |.panic("|ttselect|
|00002300| 22 29 3b 0a 09 73 77 69 | 74 63 68 20 28 72 77 29 |");..swi|tch (rw)|
|00002310| 20 7b 0a 0a 09 63 61 73 | 65 20 46 52 45 41 44 3a | {...cas|e FREAD:|
|00002320| 0a 09 09 69 66 20 28 73 | 63 2d 3e 73 63 5f 69 6e |...if (s|c->sc_in|
|00002330| 71 2e 69 66 71 5f 68 65 | 61 64 20 7c 7c 20 28 28 |q.ifq_he|ad || ((|
|00002340| 74 70 2d 3e 74 5f 73 74 | 61 74 65 20 26 20 54 53 |tp->t_st|ate & TS|
|00002350| 5f 43 41 52 52 5f 4f 4e | 29 20 3d 3d 20 30 29 29 |_CARR_ON|) == 0))|
|00002360| 0a 09 09 09 67 6f 74 6f | 20 77 69 6e 3b 0a 09 09 |....goto| win;...|
|00002370| 69 66 20 28 74 70 2d 3e | 74 5f 72 73 65 6c 20 26 |if (tp->|t_rsel &|
|00002380| 26 20 74 70 2d 3e 74 5f | 72 73 65 6c 2d 3e 70 5f |& tp->t_|rsel->p_|
|00002390| 77 63 68 61 6e 20 3d 3d | 20 28 63 61 64 64 72 5f |wchan ==| (caddr_|
|000023a0| 74 29 26 73 65 6c 77 61 | 69 74 29 0a 09 09 09 74 |t)&selwa|it)....t|
|000023b0| 70 2d 3e 74 5f 73 74 61 | 74 65 20 7c 3d 20 54 53 |p->t_sta|te |= TS|
|000023c0| 5f 52 43 4f 4c 4c 3b 0a | 09 09 65 6c 73 65 0a 09 |_RCOLL;.|..else..|
|000023d0| 09 09 74 70 2d 3e 74 5f | 72 73 65 6c 20 3d 20 75 |..tp->t_|rsel = u|
|000023e0| 2e 75 5f 70 72 6f 63 70 | 3b 0a 09 09 62 72 65 61 |.u_procp|;...brea|
|000023f0| 6b 3b 0a 0a 09 63 61 73 | 65 20 46 57 52 49 54 45 |k;...cas|e FWRITE|
|00002400| 3a 0a 09 09 69 66 20 28 | 21 49 46 5f 51 46 55 4c |:...if (|!IF_QFUL|
|00002410| 4c 28 26 73 63 2d 3e 73 | 63 5f 69 66 2e 69 66 5f |L(&sc->s|c_if.if_|
|00002420| 73 6e 64 29 29 0a 09 09 | 09 67 6f 74 6f 20 77 69 |snd))...|.goto wi|
|00002430| 6e 3b 0a 09 09 69 66 20 | 28 74 70 2d 3e 74 5f 77 |n;...if |(tp->t_w|
|00002440| 73 65 6c 20 26 26 20 74 | 70 2d 3e 74 5f 77 73 65 |sel && t|p->t_wse|
|00002450| 6c 2d 3e 70 5f 77 63 68 | 61 6e 20 3d 3d 20 28 63 |l->p_wch|an == (c|
|00002460| 61 64 64 72 5f 74 29 26 | 73 65 6c 77 61 69 74 29 |addr_t)&|selwait)|
|00002470| 0a 09 09 09 74 70 2d 3e | 74 5f 73 74 61 74 65 20 |....tp->|t_state |
|00002480| 7c 3d 20 54 53 5f 57 43 | 4f 4c 4c 3b 0a 09 09 65 ||= TS_WC|OLL;...e|
|00002490| 6c 73 65 0a 09 09 09 74 | 70 2d 3e 74 5f 77 73 65 |lse....t|p->t_wse|
|000024a0| 6c 20 3d 20 75 2e 75 5f | 70 72 6f 63 70 3b 0a 09 |l = u.u_|procp;..|
|000024b0| 09 62 72 65 61 6b 3b 0a | 09 7d 0a 09 73 70 6c 78 |.break;.|.}..splx|
|000024c0| 28 73 29 3b 0a 09 72 65 | 74 75 72 6e 20 28 30 29 |(s);..re|turn (0)|
|000024d0| 3b 0a 77 69 6e 3a 0a 09 | 73 70 6c 78 28 73 29 3b |;.win:..|splx(s);|
|000024e0| 0a 09 72 65 74 75 72 6e | 20 28 31 29 3b 0a 7d 0a |..return| (1);.}.|
|000024f0| 23 65 6e 64 69 66 0a 0a | 2f 2a 0a 20 2a 20 4c 69 |#endif..|/*. * Li|
|00002500| 6e 65 20 73 70 65 63 69 | 66 69 63 20 28 74 74 79 |ne speci|fic (tty|
|00002510| 29 20 69 6f 63 74 6c 20 | 72 6f 75 74 69 6e 65 2e |) ioctl |routine.|
|00002520| 0a 20 2a 20 50 72 6f 76 | 69 64 65 20 61 20 77 61 |. * Prov|ide a wa|
|00002530| 79 20 74 6f 20 67 65 74 | 20 74 68 65 20 70 70 70 |y to get| the ppp|
|00002540| 20 75 6e 69 74 20 6e 75 | 6d 62 65 72 2e 0a 20 2a | unit nu|mber.. *|
|00002550| 20 54 68 69 73 20 64 69 | 73 63 69 70 6c 69 6e 65 | This di|scipline|
|00002560| 20 72 65 71 75 69 72 65 | 73 20 74 68 61 74 20 74 | require|s that t|
|00002570| 74 79 20 64 65 76 69 63 | 65 20 64 72 69 76 65 72 |ty devic|e driver|
|00002580| 73 20 63 61 6c 6c 0a 20 | 2a 20 74 68 65 20 6c 69 |s call. |* the li|
|00002590| 6e 65 20 73 70 65 63 69 | 66 69 63 20 6c 5f 69 6f |ne speci|fic l_io|
|000025a0| 63 74 6c 20 72 6f 75 74 | 69 6e 65 20 66 72 6f 6d |ctl rout|ine from|
|000025b0| 20 74 68 65 69 72 20 69 | 6f 63 74 6c 20 72 6f 75 | their i|octl rou|
|000025c0| 74 69 6e 65 73 2e 0a 20 | 2a 2f 0a 2f 2a 20 41 52 |tines.. |*/./* AR|
|000025d0| 47 53 55 53 45 44 20 2a | 2f 0a 70 70 70 74 69 6f |GSUSED *|/.ppptio|
|000025e0| 63 74 6c 28 74 70 2c 20 | 63 6d 64 2c 20 64 61 74 |ctl(tp, |cmd, dat|
|000025f0| 61 2c 20 66 6c 61 67 29 | 0a 09 73 74 72 75 63 74 |a, flag)|..struct|
|00002600| 20 74 74 79 20 2a 74 70 | 3b 0a 09 63 61 64 64 72 | tty *tp|;..caddr|
|00002610| 5f 74 20 64 61 74 61 3b | 0a 7b 0a 20 20 20 20 72 |_t data;|.{.    r|
|00002620| 65 67 69 73 74 65 72 20 | 73 74 72 75 63 74 20 70 |egister |struct p|
|00002630| 70 70 5f 73 6f 66 74 63 | 20 2a 73 63 20 3d 20 28 |pp_softc| *sc = (|
|00002640| 73 74 72 75 63 74 20 70 | 70 70 5f 73 6f 66 74 63 |struct p|pp_softc|
|00002650| 20 2a 29 74 70 2d 3e 74 | 5f 73 63 3b 0a 20 20 20 | *)tp->t|_sc;.   |
|00002660| 20 69 6e 74 20 73 3b 0a | 0a 20 20 20 20 73 77 69 | int s;.|.    swi|
|00002670| 74 63 68 20 28 63 6d 64 | 29 20 7b 0a 20 20 20 20 |tch (cmd|) {.    |
|00002680| 20 20 63 61 73 65 20 54 | 49 4f 43 47 45 54 44 3a |  case T|IOCGETD:|
|00002690| 0a 09 2a 28 69 6e 74 20 | 2a 29 64 61 74 61 20 3d |..*(int |*)data =|
|000026a0| 20 73 63 2d 3e 73 63 5f | 69 66 2e 69 66 5f 75 6e | sc->sc_|if.if_un|
|000026b0| 69 74 3b 0a 09 62 72 65 | 61 6b 3b 0a 20 20 20 20 |it;..bre|ak;.    |
|000026c0| 20 20 63 61 73 65 20 46 | 49 4f 4e 52 45 41 44 3a |  case F|IONREAD:|
|000026d0| 0a 09 2a 28 69 6e 74 20 | 2a 29 64 61 74 61 20 3d |..*(int |*)data =|
|000026e0| 20 73 63 2d 3e 73 63 5f | 69 6e 71 2e 69 66 71 5f | sc->sc_|inq.ifq_|
|000026f0| 6c 65 6e 3b 0a 09 62 72 | 65 61 6b 3b 0a 0a 20 20 |len;..br|eak;..  |
|00002700| 20 20 20 20 63 61 73 65 | 20 50 50 50 49 4f 43 47 |    case| PPPIOCG|
|00002710| 55 4e 49 54 3a 0a 09 2a | 28 69 6e 74 20 2a 29 64 |UNIT:..*|(int *)d|
|00002720| 61 74 61 20 3d 20 73 63 | 2d 3e 73 63 5f 69 66 2e |ata = sc|->sc_if.|
|00002730| 69 66 5f 75 6e 69 74 3b | 0a 09 62 72 65 61 6b 3b |if_unit;|..break;|
|00002740| 0a 0a 20 20 20 20 20 20 | 63 61 73 65 20 50 50 50 |..      |case PPP|
|00002750| 49 4f 43 47 46 4c 41 47 | 53 3a 0a 09 2a 28 75 5f |IOCGFLAG|S:..*(u_|
|00002760| 69 6e 74 20 2a 29 64 61 | 74 61 20 3d 20 73 63 2d |int *)da|ta = sc-|
|00002770| 3e 73 63 5f 66 6c 61 67 | 73 3b 0a 09 62 72 65 61 |>sc_flag|s;..brea|
|00002780| 6b 3b 0a 0a 20 20 20 20 | 20 20 63 61 73 65 20 50 |k;..    |  case P|
|00002790| 50 50 49 4f 43 53 46 4c | 41 47 53 3a 0a 23 64 65 |PPIOCSFL|AGS:.#de|
|000027a0| 66 69 6e 65 09 53 43 5f | 4d 41 53 4b 09 30 78 66 |fine.SC_|MASK.0xf|
|000027b0| 66 66 66 0a 09 73 20 3d | 20 73 70 6c 69 6d 70 28 |fff..s =| splimp(|
|000027c0| 29 3b 0a 09 73 63 2d 3e | 73 63 5f 66 6c 61 67 73 |);..sc->|sc_flags|
|000027d0| 20 3d 0a 09 20 20 20 20 | 28 73 63 2d 3e 73 63 5f | =..    |(sc->sc_|
|000027e0| 66 6c 61 67 73 20 26 20 | 7e 53 43 5f 4d 41 53 4b |flags & |~SC_MASK|
|000027f0| 29 20 7c 20 28 28 2a 28 | 69 6e 74 20 2a 29 64 61 |) | ((*(|int *)da|
|00002800| 74 61 29 20 26 20 53 43 | 5f 4d 41 53 4b 29 3b 0a |ta) & SC|_MASK);.|
|00002810| 09 73 70 6c 78 28 73 29 | 3b 0a 09 62 72 65 61 6b |.splx(s)|;..break|
|00002820| 3b 0a 0a 20 20 20 20 20 | 20 63 61 73 65 20 50 50 |;..     | case PP|
|00002830| 50 49 4f 43 53 41 53 59 | 4e 43 4d 41 50 3a 0a 2f |PIOCSASY|NCMAP:./|
|00002840| 2a 0a 09 69 66 20 28 21 | 73 75 73 65 72 28 70 2d |*..if (!|suser(p-|
|00002850| 3e 70 5f 75 63 72 65 64 | 2c 20 26 70 2d 3e 70 5f |>p_ucred|, &p->p_|
|00002860| 61 63 66 6c 61 67 29 29 | 0a 09 20 20 20 20 72 65 |acflag))|..    re|
|00002870| 74 75 72 6e 20 28 45 50 | 45 52 4d 29 3b 0a 2a 2f |turn (EP|ERM);.*/|
|00002880| 0a 09 73 63 2d 3e 73 63 | 5f 61 73 79 6e 63 6d 61 |..sc->sc|_asyncma|
|00002890| 70 20 3d 20 2a 28 75 5f | 69 6e 74 20 2a 29 64 61 |p = *(u_|int *)da|
|000028a0| 74 61 3b 0a 09 62 72 65 | 61 6b 3b 0a 0a 20 20 20 |ta;..bre|ak;..   |
|000028b0| 20 20 20 63 61 73 65 20 | 50 50 50 49 4f 43 47 41 |   case |PPPIOCGA|
|000028c0| 53 59 4e 43 4d 41 50 3a | 0a 09 2a 28 75 5f 69 6e |SYNCMAP:|..*(u_in|
|000028d0| 74 20 2a 29 64 61 74 61 | 20 3d 20 73 63 2d 3e 73 |t *)data| = sc->s|
|000028e0| 63 5f 61 73 79 6e 63 6d | 61 70 3b 0a 09 62 72 65 |c_asyncm|ap;..bre|
|000028f0| 61 6b 3b 0a 0a 20 20 20 | 20 20 20 64 65 66 61 75 |ak;..   |   defau|
|00002900| 6c 74 3a 0a 09 72 65 74 | 75 72 6e 20 28 2d 31 29 |lt:..ret|urn (-1)|
|00002910| 3b 0a 20 20 20 20 7d 0a | 20 20 20 20 72 65 74 75 |;.    }.|    retu|
|00002920| 72 6e 20 28 30 29 3b 0a | 7d 0a 0a 2f 2a 0a 20 2a |rn (0);.|}../*. *|
|00002930| 20 46 43 53 20 6c 6f 6f | 6b 75 70 20 74 61 62 6c | FCS loo|kup tabl|
|00002940| 65 20 61 73 20 63 61 6c | 63 75 6c 61 74 65 64 20 |e as cal|culated |
|00002950| 62 79 20 67 65 6e 66 63 | 73 74 61 62 2e 0a 20 2a |by genfc|stab.. *|
|00002960| 2f 0a 73 74 61 74 69 63 | 20 75 5f 73 68 6f 72 74 |/.static| u_short|
|00002970| 20 66 63 73 74 61 62 5b | 32 35 36 5d 20 3d 20 7b | fcstab[|256] = {|
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|000031a0| 7d 3b 0a 0a 2f 2a 0a 20 | 2a 20 43 61 6c 63 75 6c |};../*. |* Calcul|
|000031b0| 61 74 65 20 61 20 6e 65 | 77 20 46 43 53 20 67 69 |ate a ne|w FCS gi|
|000031c0| 76 65 6e 20 74 68 65 20 | 63 75 72 72 65 6e 74 20 |ven the |current |
|000031d0| 46 43 53 20 61 6e 64 20 | 74 68 65 20 6e 65 77 20 |FCS and |the new |
|000031e0| 64 61 74 61 2e 0a 20 2a | 2f 0a 75 5f 73 68 6f 72 |data.. *|/.u_shor|
|000031f0| 74 20 70 70 70 66 63 73 | 28 66 63 73 2c 20 63 70 |t pppfcs|(fcs, cp|
|00003200| 2c 20 6c 65 6e 29 0a 20 | 20 20 20 72 65 67 69 73 |, len). |   regis|
|00003210| 74 65 72 20 75 5f 73 68 | 6f 72 74 20 66 63 73 3b |ter u_sh|ort fcs;|
|00003220| 0a 20 20 20 20 72 65 67 | 69 73 74 65 72 20 75 5f |.    reg|ister u_|
|00003230| 63 68 61 72 20 2a 63 70 | 3b 0a 20 20 20 20 72 65 |char *cp|;.    re|
|00003240| 67 69 73 74 65 72 20 69 | 6e 74 20 6c 65 6e 3b 0a |gister i|nt len;.|
|00003250| 7b 0a 20 20 20 20 77 68 | 69 6c 65 20 28 6c 65 6e |{.    wh|ile (len|
|00003260| 2d 2d 29 0a 09 66 63 73 | 20 3d 20 50 50 50 5f 46 |--)..fcs| = PPP_F|
|00003270| 43 53 28 66 63 73 2c 20 | 2a 63 70 2b 2b 29 3b 0a |CS(fcs, |*cp++);.|
|00003280| 20 20 20 20 72 65 74 75 | 72 6e 20 28 66 63 73 29 |    retu|rn (fcs)|
|00003290| 3b 0a 7d 0a 0a 2f 2a 0a | 20 2a 20 51 75 65 75 65 |;.}../*.| * Queue|
|000032a0| 20 61 20 70 61 63 6b 65 | 74 2e 20 20 53 74 61 72 | a packe|t.  Star|
|000032b0| 74 20 74 72 61 6e 73 6d | 69 73 73 69 6f 6e 20 69 |t transm|ission i|
|000032c0| 66 20 6e 6f 74 20 61 63 | 74 69 76 65 2e 0a 20 2a |f not ac|tive.. *|
|000032d0| 20 50 61 63 6b 65 74 20 | 69 73 20 70 6c 61 63 65 | Packet |is place|
|000032e0| 64 20 69 6e 20 6e 6f 72 | 6d 61 6c 6c 79 20 49 6e |d in nor|mally In|
|000032f0| 66 6f 72 6d 61 74 69 6f | 6e 20 66 69 65 6c 64 20 |formatio|n field |
|00003300| 6f 66 20 50 50 50 20 66 | 72 61 6d 65 2e 0a 20 2a |of PPP f|rame.. *|
|00003310| 2f 0a 70 70 70 6f 75 74 | 70 75 74 28 69 66 70 2c |/.pppout|put(ifp,|
|00003320| 20 6d 30 2c 20 64 73 74 | 29 0a 09 73 74 72 75 63 | m0, dst|)..struc|
|00003330| 74 20 69 66 6e 65 74 20 | 2a 69 66 70 3b 0a 09 73 |t ifnet |*ifp;..s|
|00003340| 74 72 75 63 74 20 6d 62 | 75 66 20 2a 6d 30 3b 0a |truct mb|uf *m0;.|
|00003350| 09 73 74 72 75 63 74 20 | 73 6f 63 6b 61 64 64 72 |.struct |sockaddr|
|00003360| 20 2a 64 73 74 3b 0a 7b | 0a 09 72 65 67 69 73 74 | *dst;.{|..regist|
|00003370| 65 72 20 73 74 72 75 63 | 74 20 70 70 70 5f 73 6f |er struc|t ppp_so|
|00003380| 66 74 63 20 2a 73 63 20 | 3d 20 26 70 70 70 5f 73 |ftc *sc |= &ppp_s|
|00003390| 6f 66 74 63 5b 69 66 70 | 2d 3e 69 66 5f 75 6e 69 |oftc[ifp|->if_uni|
|000033a0| 74 5d 3b 0a 09 73 74 72 | 75 63 74 20 6d 62 75 66 |t];..str|uct mbuf|
|000033b0| 20 2a 6d 2c 20 2a 6d 31 | 3b 0a 09 73 74 72 75 63 | *m, *m1|;..struc|
|000033c0| 74 20 70 70 70 5f 68 65 | 61 64 65 72 20 2a 70 68 |t ppp_he|ader *ph|
|000033d0| 3b 0a 09 75 5f 73 68 6f | 72 74 20 70 72 6f 74 6f |;..u_sho|rt proto|
|000033e0| 63 6f 6c 2c 20 66 63 73 | 3b 0a 09 75 5f 63 68 61 |col, fcs|;..u_cha|
|000033f0| 72 20 61 64 64 72 65 73 | 73 2c 20 63 6f 6e 74 72 |r addres|s, contr|
|00003400| 6f 6c 2c 20 2a 63 70 3b | 0a 09 69 6e 74 20 73 2c |ol, *cp;|..int s,|
|00003410| 20 65 72 72 6f 72 2c 20 | 63 6f 6d 70 61 63 2c 20 | error, |compac, |
|00003420| 63 6f 6d 70 70 72 6f 74 | 3b 0a 0a 0a 09 69 66 20 |compprot|;....if |
|00003430| 28 73 63 2d 3e 73 63 5f | 74 74 79 70 20 3d 3d 20 |(sc->sc_|ttyp == |
|00003440| 4e 55 4c 4c 20 7c 7c 0a | 09 20 20 20 20 28 69 66 |NULL ||.|.    (if|
|00003450| 70 2d 3e 69 66 5f 66 6c | 61 67 73 20 26 20 49 46 |p->if_fl|ags & IF|
|00003460| 46 5f 52 55 4e 4e 49 4e | 47 29 20 21 3d 20 49 46 |F_RUNNIN|G) != IF|
|00003470| 46 5f 52 55 4e 4e 49 4e | 47 29 20 7b 0a 09 09 65 |F_RUNNIN|G) {...e|
|00003480| 72 72 6f 72 20 3d 20 45 | 4e 45 54 44 4f 57 4e 3b |rror = E|NETDOWN;|
|00003490| 09 2f 2a 20 73 6f 72 74 | 20 6f 66 20 2a 2f 0a 09 |./* sort| of */..|
|000034a0| 09 67 6f 74 6f 20 62 61 | 64 3b 0a 09 7d 0a 09 69 |.goto ba|d;..}..i|
|000034b0| 66 20 28 28 73 63 2d 3e | 73 63 5f 74 74 79 70 2d |f ((sc->|sc_ttyp-|
|000034c0| 3e 74 5f 73 74 61 74 65 | 20 26 20 54 53 5f 43 41 |>t_state| & TS_CA|
|000034d0| 52 52 5f 4f 4e 29 20 3d | 3d 20 30 29 20 7b 0a 09 |RR_ON) =|= 0) {..|
|000034e0| 09 65 72 72 6f 72 20 3d | 20 45 48 4f 53 54 55 4e |.error =| EHOSTUN|
|000034f0| 52 45 41 43 48 3b 0a 09 | 09 67 6f 74 6f 20 62 61 |REACH;..|.goto ba|
|00003500| 64 3b 0a 09 7d 0a 0a 09 | 2f 2a 0a 09 20 2a 20 43 |d;..}...|/*.. * C|
|00003510| 6f 6d 70 75 74 65 20 50 | 50 50 20 68 65 61 64 65 |ompute P|PP heade|
|00003520| 72 2e 0a 09 20 2a 2f 0a | 09 61 64 64 72 65 73 73 |r... */.|.address|
|00003530| 20 3d 20 50 50 50 5f 41 | 4c 4c 53 54 41 54 49 4f | = PPP_A|LLSTATIO|
|00003540| 4e 53 3b 0a 09 63 6f 6e | 74 72 6f 6c 20 3d 20 50 |NS;..con|trol = P|
|00003550| 50 50 5f 55 49 3b 0a 09 | 73 77 69 74 63 68 20 28 |PP_UI;..|switch (|
|00003560| 64 73 74 2d 3e 73 61 5f | 66 61 6d 69 6c 79 29 20 |dst->sa_|family) |
|00003570| 7b 0a 23 69 66 64 65 66 | 20 49 4e 45 54 0a 09 20 |{.#ifdef| INET.. |
|00003580| 20 20 20 63 61 73 65 20 | 41 46 5f 49 4e 45 54 3a |   case |AF_INET:|
|00003590| 0a 09 09 70 72 6f 74 6f | 63 6f 6c 20 3d 20 50 50 |...proto|col = PP|
|000035a0| 50 5f 49 50 3b 0a 23 69 | 66 64 65 66 20 56 4a 43 |P_IP;.#i|fdef VJC|
|000035b0| 0a 09 09 69 66 20 28 73 | 63 2d 3e 73 63 5f 66 6c |...if (s|c->sc_fl|
|000035c0| 61 67 73 20 26 20 53 43 | 5f 43 4f 4d 50 5f 54 43 |ags & SC|_COMP_TC|
|000035d0| 50 29 0a 09 09 7b 0a 09 | 09 20 20 20 20 72 65 67 |P)...{..|.    reg|
|000035e0| 69 73 74 65 72 20 73 74 | 72 75 63 74 20 69 70 20 |ister st|ruct ip |
|000035f0| 2a 69 70 3b 0a 0a 09 09 | 20 20 20 20 69 66 20 28 |*ip;....|    if (|
|00003600| 28 69 70 20 3d 20 6d 74 | 6f 64 28 6d 30 2c 20 73 |(ip = mt|od(m0, s|
|00003610| 74 72 75 63 74 20 69 70 | 20 2a 29 29 2d 3e 69 70 |truct ip| *))->ip|
|00003620| 5f 70 20 3d 3d 20 49 50 | 50 52 4f 54 4f 5f 54 43 |_p == IP|PROTO_TC|
|00003630| 50 29 20 7b 0a 09 09 09 | 69 6e 74 20 74 79 70 65 |P) {....|int type|
|00003640| 20 3d 20 73 6c 5f 63 6f | 6d 70 72 65 73 73 5f 74 | = sl_co|mpress_t|
|00003650| 63 70 28 6d 30 2c 20 69 | 70 2c 20 26 73 63 2d 3e |cp(m0, i|p, &sc->|
|00003660| 73 63 5f 63 6f 6d 70 2c | 20 31 29 3b 0a 09 09 09 |sc_comp,| 1);....|
|00003670| 73 77 69 74 63 68 20 28 | 74 79 70 65 29 20 7b 0a |switch (|type) {.|
|00003680| 09 09 09 20 20 63 61 73 | 65 20 54 59 50 45 5f 55 |...  cas|e TYPE_U|
|00003690| 4e 43 4f 4d 50 52 45 53 | 53 45 44 5f 54 43 50 3a |NCOMPRES|SED_TCP:|
|000036a0| 0a 09 09 09 20 20 20 20 | 70 72 6f 74 6f 63 6f 6c |....    |protocol|
|000036b0| 20 3d 20 50 50 50 5f 56 | 4a 43 5f 55 4e 43 4f 4d | = PPP_V|JC_UNCOM|
|000036c0| 50 3b 0a 09 09 09 20 20 | 20 20 62 72 65 61 6b 3b |P;....  |  break;|
|000036d0| 0a 09 09 09 20 20 63 61 | 73 65 20 54 59 50 45 5f |....  ca|se TYPE_|
|000036e0| 43 4f 4d 50 52 45 53 53 | 45 44 5f 54 43 50 3a 0a |COMPRESS|ED_TCP:.|
|000036f0| 09 09 09 20 20 20 20 70 | 72 6f 74 6f 63 6f 6c 20 |...    p|rotocol |
|00003700| 3d 20 50 50 50 5f 56 4a | 43 5f 43 4f 4d 50 3b 0a |= PPP_VJ|C_COMP;.|
|00003710| 09 09 09 20 20 20 20 62 | 72 65 61 6b 3b 0a 09 09 |...    b|reak;...|
|00003720| 09 20 20 64 65 66 61 75 | 6c 74 3a 3b 0a 09 09 09 |.  defau|lt:;....|
|00003730| 7d 0a 09 09 20 20 20 20 | 7d 0a 09 09 7d 0a 23 65 |}...    |}...}.#e|
|00003740| 6e 64 69 66 0a 09 09 62 | 72 65 61 6b 3b 0a 23 65 |ndif...b|reak;.#e|
|00003750| 6e 64 69 66 0a 23 69 66 | 64 65 66 20 4e 53 0a 09 |ndif.#if|def NS..|
|00003760| 20 20 20 20 63 61 73 65 | 20 41 46 5f 4e 53 3a 0a |    case| AF_NS:.|
|00003770| 09 09 70 72 6f 74 6f 63 | 6f 6c 20 3d 20 50 50 50 |..protoc|ol = PPP|
|00003780| 5f 58 4e 53 3b 0a 09 09 | 62 72 65 61 6b 3b 0a 23 |_XNS;...|break;.#|
|00003790| 65 6e 64 69 66 0a 09 20 | 20 20 20 63 61 73 65 20 |endif.. |   case |
|000037a0| 41 46 5f 55 4e 53 50 45 | 43 3a 0a 09 09 70 68 20 |AF_UNSPE|C:...ph |
|000037b0| 3d 20 28 73 74 72 75 63 | 74 20 70 70 70 5f 68 65 |= (struc|t ppp_he|
|000037c0| 61 64 65 72 20 2a 29 20 | 64 73 74 2d 3e 73 61 5f |ader *) |dst->sa_|
|000037d0| 64 61 74 61 3b 0a 09 09 | 61 64 64 72 65 73 73 20 |data;...|address |
|000037e0| 3d 20 70 68 2d 3e 70 68 | 5f 61 64 64 72 65 73 73 |= ph->ph|_address|
|000037f0| 3b 0a 09 09 63 6f 6e 74 | 72 6f 6c 20 3d 20 70 68 |;...cont|rol = ph|
|00003800| 2d 3e 70 68 5f 63 6f 6e | 74 72 6f 6c 3b 0a 09 09 |->ph_con|trol;...|
|00003810| 70 72 6f 74 6f 63 6f 6c | 20 3d 20 6e 74 6f 68 73 |protocol| = ntohs|
|00003820| 28 70 68 2d 3e 70 68 5f | 70 72 6f 74 6f 63 6f 6c |(ph->ph_|protocol|
|00003830| 29 3b 0a 09 09 62 72 65 | 61 6b 3b 0a 09 20 20 20 |);...bre|ak;..   |
|00003840| 20 64 65 66 61 75 6c 74 | 3a 0a 09 09 70 72 69 6e | default|:...prin|
|00003850| 74 66 28 22 70 70 70 25 | 64 3a 20 61 66 25 64 20 |tf("ppp%|d: af%d |
|00003860| 6e 6f 74 20 73 75 70 70 | 6f 72 74 65 64 5c 6e 22 |not supp|orted\n"|
|00003870| 2c 20 69 66 70 2d 3e 69 | 66 5f 75 6e 69 74 2c 0a |, ifp->i|f_unit,.|
|00003880| 09 09 09 64 73 74 2d 3e | 73 61 5f 66 61 6d 69 6c |...dst->|sa_famil|
|00003890| 79 29 3b 0a 09 09 65 72 | 72 6f 72 20 3d 20 45 41 |y);...er|ror = EA|
|000038a0| 46 4e 4f 53 55 50 50 4f | 52 54 3b 0a 09 09 67 6f |FNOSUPPO|RT;...go|
|000038b0| 74 6f 20 62 61 64 3b 0a | 09 7d 0a 09 63 6f 6d 70 |to bad;.|.}..comp|
|000038c0| 61 63 20 3d 20 73 63 2d | 3e 73 63 5f 66 6c 61 67 |ac = sc-|>sc_flag|
|000038d0| 73 20 26 20 53 43 5f 43 | 4f 4d 50 5f 41 43 20 26 |s & SC_C|OMP_AC &|
|000038e0| 26 0a 09 09 20 61 64 64 | 72 65 73 73 20 3d 3d 20 |&... add|ress == |
|000038f0| 50 50 50 5f 41 4c 4c 53 | 54 41 54 49 4f 4e 53 20 |PPP_ALLS|TATIONS |
|00003900| 26 26 0a 09 09 20 63 6f | 6e 74 72 6f 6c 20 3d 3d |&&... co|ntrol ==|
|00003910| 20 50 50 50 5f 55 49 20 | 26 26 0a 09 09 20 70 72 | PPP_UI |&&... pr|
|00003920| 6f 74 6f 63 6f 6c 20 21 | 3d 20 50 50 50 5f 41 4c |otocol !|= PPP_AL|
|00003930| 4c 53 54 41 54 49 4f 4e | 53 3b 0a 09 63 6f 6d 70 |LSTATION|S;..comp|
|00003940| 70 72 6f 74 20 3d 20 73 | 63 2d 3e 73 63 5f 66 6c |prot = s|c->sc_fl|
|00003950| 61 67 73 20 26 20 53 43 | 5f 43 4f 4d 50 5f 50 52 |ags & SC|_COMP_PR|
|00003960| 4f 54 20 26 26 0a 09 09 | 20 70 72 6f 74 6f 63 6f |OT &&...| protoco|
|00003970| 6c 20 3c 20 30 78 31 30 | 30 3b 0a 0a 09 2f 2a 0a |l < 0x10|0;.../*.|
|00003980| 09 20 2a 20 41 64 64 20 | 50 50 50 20 68 65 61 64 |. * Add |PPP head|
|00003990| 65 72 2e 20 20 49 66 20 | 6e 6f 20 73 70 61 63 65 |er.  If |no space|
|000039a0| 20 69 6e 20 66 69 72 73 | 74 20 6d 62 75 66 2c 20 | in firs|t mbuf, |
|000039b0| 61 6c 6c 6f 63 61 74 65 | 20 61 6e 6f 74 68 65 72 |allocate| another|
|000039c0| 2e 0a 09 20 2a 2f 0a 09 | 69 66 20 28 4d 5f 4c 45 |... */..|if (M_LE|
|000039d0| 41 44 49 4e 47 53 50 41 | 43 45 28 6d 30 29 20 3c |ADINGSPA|CE(m0) <|
|000039e0| 20 73 69 7a 65 6f 66 28 | 73 74 72 75 63 74 20 70 | sizeof(|struct p|
|000039f0| 70 70 5f 68 65 61 64 65 | 72 29 29 20 7b 0a 09 20 |pp_heade|r)) {.. |
|00003a00| 20 6d 30 20 3d 20 6d 5f | 70 72 65 70 65 6e 64 28 | m0 = m_|prepend(|
|00003a10| 6d 30 2c 20 73 69 7a 65 | 6f 66 28 73 74 72 75 63 |m0, size|of(struc|
|00003a20| 74 20 70 70 70 5f 68 65 | 61 64 65 72 29 2c 20 4d |t ppp_he|ader), M|
|00003a30| 5f 44 4f 4e 54 57 41 49 | 54 29 3b 0a 09 20 20 69 |_DONTWAI|T);..  i|
|00003a40| 66 20 28 6d 30 20 3d 3d | 20 30 29 20 7b 0a 09 20 |f (m0 ==| 0) {.. |
|00003a50| 20 20 20 65 72 72 6f 72 | 20 3d 20 45 4e 4f 42 55 |   error| = ENOBU|
|00003a60| 46 53 3b 0a 09 20 20 20 | 20 67 6f 74 6f 20 62 61 |FS;..   | goto ba|
|00003a70| 64 3b 0a 09 20 20 7d 0a | 09 20 20 6d 30 2d 3e 6d |d;..  }.|.  m0->m|
|00003a80| 5f 6c 65 6e 20 3d 20 30 | 3b 0a 09 7d 20 65 6c 73 |_len = 0|;..} els|
|00003a90| 65 0a 09 20 20 6d 30 2d | 3e 6d 5f 64 61 74 61 20 |e..  m0-|>m_data |
|00003aa0| 2d 3d 20 28 63 6f 6d 70 | 61 63 20 3f 20 30 20 3a |-= (comp|ac ? 0 :|
|00003ab0| 20 32 29 20 2b 20 28 63 | 6f 6d 70 70 72 6f 74 20 | 2) + (c|ompprot |
|00003ac0| 3f 20 31 20 3a 20 32 29 | 3b 0a 0a 09 63 70 20 3d |? 1 : 2)|;...cp =|
|00003ad0| 20 6d 74 6f 64 28 6d 30 | 2c 20 75 5f 63 68 61 72 | mtod(m0|, u_char|
|00003ae0| 20 2a 29 3b 0a 09 69 66 | 20 28 21 63 6f 6d 70 61 | *);..if| (!compa|
|00003af0| 63 29 20 7b 0a 09 20 20 | 20 20 2a 63 70 2b 2b 20 |c) {..  |  *cp++ |
|00003b00| 3d 20 61 64 64 72 65 73 | 73 3b 0a 09 20 20 20 20 |= addres|s;..    |
|00003b10| 2a 63 70 2b 2b 20 3d 20 | 63 6f 6e 74 72 6f 6c 3b |*cp++ = |control;|
|00003b20| 0a 09 20 20 20 20 6d 30 | 2d 3e 6d 5f 6c 65 6e 20 |..    m0|->m_len |
|00003b30| 2b 3d 20 32 3b 0a 09 7d | 0a 09 69 66 20 28 21 63 |+= 2;..}|..if (!c|
|00003b40| 6f 6d 70 70 72 6f 74 29 | 20 7b 0a 09 20 20 20 20 |ompprot)| {..    |
|00003b50| 2a 63 70 2b 2b 20 3d 20 | 70 72 6f 74 6f 63 6f 6c |*cp++ = |protocol|
|00003b60| 20 3e 3e 20 38 3b 0a 09 | 20 20 20 20 6d 30 2d 3e | >> 8;..|    m0->|
|00003b70| 6d 5f 6c 65 6e 2b 2b 3b | 0a 09 7d 0a 09 2a 63 70 |m_len++;|..}..*cp|
|00003b80| 2b 2b 20 3d 20 70 72 6f | 74 6f 63 6f 6c 20 26 20 |++ = pro|tocol & |
|00003b90| 30 78 66 66 3b 0a 09 6d | 30 2d 3e 6d 5f 6c 65 6e |0xff;..m|0->m_len|
|00003ba0| 2b 2b 3b 0a 0a 09 2f 2a | 0a 09 20 2a 20 41 64 64 |++;.../*|.. * Add|
|00003bb0| 20 50 50 50 20 74 72 61 | 69 6c 65 72 2e 20 20 43 | PPP tra|iler.  C|
|00003bc0| 6f 6d 70 75 74 65 20 6f | 6e 65 27 73 20 63 6f 6d |ompute o|ne's com|
|00003bd0| 70 6c 65 6d 65 6e 74 20 | 6f 66 20 46 43 53 20 6f |plement |of FCS o|
|00003be0| 76 65 72 20 66 72 61 6d | 65 0a 09 20 2a 20 61 6e |ver fram|e.. * an|
|00003bf0| 64 20 61 74 74 61 63 68 | 20 74 6f 20 6d 62 75 66 |d attach| to mbuf|
|00003c00| 20 63 68 61 69 6e 20 6c | 65 61 73 74 20 73 69 67 | chain l|east sig|
|00003c10| 6e 69 66 69 63 61 6e 74 | 20 62 79 74 65 20 66 69 |nificant| byte fi|
|00003c20| 72 73 74 2e 0a 09 20 2a | 2f 0a 09 66 63 73 20 3d |rst... *|/..fcs =|
|00003c30| 20 50 50 50 5f 49 4e 49 | 54 46 43 53 3b 0a 09 66 | PPP_INI|TFCS;..f|
|00003c40| 6f 72 20 28 6d 20 3d 20 | 6d 30 3b 20 6d 3b 20 6d |or (m = |m0; m; m|
|00003c50| 20 3d 20 6d 2d 3e 6d 5f | 6e 65 78 74 29 20 7b 0a | = m->m_|next) {.|
|00003c60| 09 20 20 20 20 66 63 73 | 20 3d 20 70 70 70 66 63 |.    fcs| = pppfc|
|00003c70| 73 28 66 63 73 2c 20 6d | 74 6f 64 28 6d 2c 20 75 |s(fcs, m|tod(m, u|
|00003c80| 5f 63 68 61 72 20 2a 29 | 2c 20 6d 2d 3e 6d 5f 6c |_char *)|, m->m_l|
|00003c90| 65 6e 29 3b 0a 09 20 20 | 20 20 6d 31 20 3d 20 6d |en);..  |  m1 = m|
|00003ca0| 3b 0a 09 7d 0a 09 66 63 | 73 20 5e 3d 20 30 78 66 |;..}..fc|s ^= 0xf|
|00003cb0| 66 66 66 3b 0a 0a 09 69 | 66 20 28 4d 5f 54 52 41 |fff;...i|f (M_TRA|
|00003cc0| 49 4c 49 4e 47 53 50 41 | 43 45 28 6d 31 29 20 3c |ILINGSPA|CE(m1) <|
|00003cd0| 20 73 69 7a 65 6f 66 28 | 73 68 6f 72 74 29 29 20 | sizeof(|short)) |
|00003ce0| 7b 0a 09 20 20 20 20 6d | 20 3d 20 6d 5f 67 65 74 |{..    m| = m_get|
|00003cf0| 28 4d 5f 44 4f 4e 54 57 | 41 49 54 2c 20 4d 54 5f |(M_DONTW|AIT, MT_|
|00003d00| 48 45 41 44 45 52 29 3b | 0a 09 20 20 20 20 69 66 |HEADER);|..    if|
|00003d10| 20 28 6d 20 3d 3d 20 30 | 29 20 7b 0a 09 09 65 72 | (m == 0|) {...er|
|00003d20| 72 6f 72 20 3d 20 45 4e | 4f 42 55 46 53 3b 0a 09 |ror = EN|OBUFS;..|
|00003d30| 09 67 6f 74 6f 20 62 61 | 64 3b 0a 09 20 20 20 20 |.goto ba|d;..    |
|00003d40| 7d 0a 09 20 20 20 20 6d | 2d 3e 6d 5f 6e 65 78 74 |}..    m|->m_next|
|00003d50| 20 3d 20 4e 55 4c 4c 3b | 0a 09 20 20 20 20 6d 2d | = NULL;|..    m-|
|00003d60| 3e 6d 5f 6c 65 6e 20 3d | 20 30 3b 0a 09 20 20 20 |>m_len =| 0;..   |
|00003d70| 20 6d 31 2d 3e 6d 5f 6e | 65 78 74 20 3d 20 6d 3b | m1->m_n|ext = m;|
|00003d80| 0a 09 20 20 20 20 6d 31 | 20 3d 20 6d 3b 0a 09 7d |..    m1| = m;..}|
|00003d90| 0a 09 63 70 20 3d 20 6d | 74 6f 64 28 6d 31 2c 20 |..cp = m|tod(m1, |
|00003da0| 75 5f 63 68 61 72 20 2a | 29 20 2b 20 6d 31 2d 3e |u_char *|) + m1->|
|00003db0| 6d 5f 6c 65 6e 3b 0a 0a | 09 2a 63 70 2b 2b 20 3d |m_len;..|.*cp++ =|
|00003dc0| 20 66 63 73 20 26 20 30 | 78 66 66 3b 0a 09 2a 63 | fcs & 0|xff;..*c|
|00003dd0| 70 2b 2b 20 3d 20 66 63 | 73 20 3e 3e 20 38 3b 0a |p++ = fc|s >> 8;.|
|00003de0| 09 6d 31 2d 3e 6d 5f 6c | 65 6e 20 2b 3d 20 32 3b |.m1->m_l|en += 2;|
|00003df0| 0a 0a 09 69 66 20 28 70 | 70 70 5f 61 73 79 6e 63 |...if (p|pp_async|
|00003e00| 5f 6f 75 74 5f 64 65 62 | 75 67 29 20 7b 0a 09 20 |_out_deb|ug) {.. |
|00003e10| 20 20 20 70 72 69 6e 74 | 66 28 22 66 63 73 20 25 |   print|f("fcs %|
|00003e20| 78 5c 6e 22 2c 20 66 63 | 73 20 26 20 30 78 66 66 |x\n", fc|s & 0xff|
|00003e30| 66 66 29 3b 0a 09 20 20 | 20 20 70 72 69 6e 74 66 |ff);..  |  printf|
|00003e40| 28 22 6f 75 74 70 75 74 | 3a 20 22 29 3b 0a 09 20 |("output|: ");.. |
|00003e50| 20 20 20 70 70 70 64 75 | 6d 70 6d 28 6d 30 29 3b |   pppdu|mpm(m0);|
|00003e60| 0a 09 7d 0a 0a 09 73 20 | 3d 20 73 70 6c 69 6d 70 |..}...s |= splimp|
|00003e70| 28 29 3b 0a 09 69 66 20 | 28 49 46 5f 51 46 55 4c |();..if |(IF_QFUL|
|00003e80| 4c 28 26 69 66 70 2d 3e | 69 66 5f 73 6e 64 29 29 |L(&ifp->|if_snd))|
|00003e90| 20 7b 0a 09 09 49 46 5f | 44 52 4f 50 28 26 69 66 | {...IF_|DROP(&if|
|00003ea0| 70 2d 3e 69 66 5f 73 6e | 64 29 3b 0a 09 09 73 70 |p->if_sn|d);...sp|
|00003eb0| 6c 78 28 73 29 3b 0a 09 | 09 73 63 2d 3e 73 63 5f |lx(s);..|.sc->sc_|
|00003ec0| 69 66 2e 69 66 5f 6f 65 | 72 72 6f 72 73 2b 2b 3b |if.if_oe|rrors++;|
|00003ed0| 0a 09 09 65 72 72 6f 72 | 20 3d 20 45 4e 4f 42 55 |...error| = ENOBU|
|00003ee0| 46 53 3b 0a 09 09 67 6f | 74 6f 20 62 61 64 3b 0a |FS;...go|to bad;.|
|00003ef0| 09 7d 0a 09 49 46 5f 45 | 4e 51 55 45 55 45 28 26 |.}..IF_E|NQUEUE(&|
|00003f00| 69 66 70 2d 3e 69 66 5f | 73 6e 64 2c 20 6d 30 29 |ifp->if_|snd, m0)|
|00003f10| 3b 0a 09 69 66 20 28 52 | 42 5f 4c 45 4e 28 26 73 |;..if (R|B_LEN(&s|
|00003f20| 63 2d 3e 73 63 5f 74 74 | 79 70 2d 3e 74 5f 6f 75 |c->sc_tt|yp->t_ou|
|00003f30| 74 29 20 3d 3d 20 30 29 | 0a 09 09 70 70 70 73 74 |t) == 0)|...pppst|
|00003f40| 61 72 74 28 73 63 2d 3e | 73 63 5f 74 74 79 70 29 |art(sc->|sc_ttyp)|
|00003f50| 3b 0a 09 73 70 6c 78 28 | 73 29 3b 0a 09 72 65 74 |;..splx(|s);..ret|
|00003f60| 75 72 6e 20 28 30 29 3b | 0a 0a 62 61 64 3a 0a 09 |urn (0);|..bad:..|
|00003f70| 6d 5f 66 72 65 65 6d 28 | 6d 30 29 3b 0a 09 72 65 |m_freem(|m0);..re|
|00003f80| 74 75 72 6e 20 28 65 72 | 72 6f 72 29 3b 0a 7d 0a |turn (er|ror);.}.|
|00003f90| 0a 2f 2a 0a 20 2a 20 53 | 74 61 72 74 20 6f 75 74 |./*. * S|tart out|
|00003fa0| 70 75 74 20 6f 6e 20 69 | 6e 74 65 72 66 61 63 65 |put on i|nterface|
|00003fb0| 2e 20 20 47 65 74 20 61 | 6e 6f 74 68 65 72 20 64 |.  Get a|nother d|
|00003fc0| 61 74 61 67 72 61 6d 0a | 20 2a 20 74 6f 20 73 65 |atagram.| * to se|
|00003fd0| 6e 64 20 66 72 6f 6d 20 | 74 68 65 20 69 6e 74 65 |nd from |the inte|
|00003fe0| 72 66 61 63 65 20 71 75 | 65 75 65 20 61 6e 64 20 |rface qu|eue and |
|00003ff0| 6d 61 70 20 69 74 20 74 | 6f 0a 20 2a 20 74 68 65 |map it t|o. * the|
|00004000| 20 69 6e 74 65 72 66 61 | 63 65 20 62 65 66 6f 72 | interfa|ce befor|
|00004010| 65 20 73 74 61 72 74 69 | 6e 67 20 6f 75 74 70 75 |e starti|ng outpu|
|00004020| 74 2e 0a 20 2a 2f 0a 70 | 70 70 73 74 61 72 74 28 |t.. */.p|ppstart(|
|00004030| 74 70 29 0a 09 72 65 67 | 69 73 74 65 72 20 73 74 |tp)..reg|ister st|
|00004040| 72 75 63 74 20 74 74 79 | 20 2a 74 70 3b 0a 7b 0a |ruct tty| *tp;.{.|
|00004050| 09 72 65 67 69 73 74 65 | 72 20 73 74 72 75 63 74 |.registe|r struct|
|00004060| 20 70 70 70 5f 73 6f 66 | 74 63 20 2a 73 63 20 3d | ppp_sof|tc *sc =|
|00004070| 20 28 73 74 72 75 63 74 | 20 70 70 70 5f 73 6f 66 | (struct| ppp_sof|
|00004080| 74 63 20 2a 29 74 70 2d | 3e 74 5f 73 63 3b 0a 09 |tc *)tp-|>t_sc;..|
|00004090| 72 65 67 69 73 74 65 72 | 20 73 74 72 75 63 74 20 |register| struct |
|000040a0| 6d 62 75 66 20 2a 6d 3b | 0a 09 72 65 67 69 73 74 |mbuf *m;|..regist|
|000040b0| 65 72 20 69 6e 74 20 6c | 65 6e 3b 0a 09 72 65 67 |er int l|en;..reg|
|000040c0| 69 73 74 65 72 20 75 5f | 63 68 61 72 20 2a 73 74 |ister u_|char *st|
|000040d0| 61 72 74 2c 20 2a 73 74 | 6f 70 2c 20 2a 63 70 3b |art, *st|op, *cp;|
|000040e0| 0a 09 69 6e 74 20 6e 2c | 20 73 3b 0a 09 73 74 72 |..int n,| s;..str|
|000040f0| 75 63 74 20 6d 62 75 66 | 20 2a 6d 32 3b 0a 0a 0a |uct mbuf| *m2;...|
|00004100| 09 66 6f 72 20 28 3b 3b | 29 20 7b 0a 09 09 2f 2a |.for (;;|) {.../*|
|00004110| 0a 09 09 20 2a 20 49 66 | 20 74 68 65 72 65 20 69 |... * If| there i|
|00004120| 73 20 6d 6f 72 65 20 69 | 6e 20 74 68 65 20 6f 75 |s more i|n the ou|
|00004130| 74 70 75 74 20 71 75 65 | 75 65 2c 20 6a 75 73 74 |tput que|ue, just|
|00004140| 20 73 65 6e 64 20 69 74 | 20 6e 6f 77 2e 0a 09 09 | send it| now....|
|00004150| 20 2a 20 57 65 20 61 72 | 65 20 62 65 69 6e 67 20 | * We ar|e being |
|00004160| 63 61 6c 6c 65 64 20 69 | 6e 20 6c 69 65 75 20 6f |called i|n lieu o|
|00004170| 66 20 74 74 73 74 61 72 | 74 20 61 6e 64 20 6d 75 |f ttstar|t and mu|
|00004180| 73 74 20 64 6f 20 77 68 | 61 74 0a 09 09 20 2a 20 |st do wh|at... * |
|00004190| 69 74 20 77 6f 75 6c 64 | 2e 0a 09 09 20 2a 2f 0a |it would|.... */.|
|000041a0| 09 09 69 66 20 28 52 42 | 5f 4c 45 4e 28 26 74 70 |..if (RB|_LEN(&tp|
|000041b0| 2d 3e 74 5f 6f 75 74 29 | 20 21 3d 20 30 29 20 7b |->t_out)| != 0) {|
|000041c0| 0a 09 09 20 20 28 2a 74 | 70 2d 3e 74 5f 6f 70 72 |...  (*t|p->t_opr|
|000041d0| 6f 63 29 28 74 70 29 3b | 0a 09 09 20 20 69 66 20 |oc)(tp);|...  if |
|000041e0| 28 52 42 5f 4c 45 4e 28 | 26 74 70 2d 3e 74 5f 6f |(RB_LEN(|&tp->t_o|
|000041f0| 75 74 29 20 3e 20 50 50 | 50 5f 48 49 57 41 54 29 |ut) > PP|P_HIWAT)|
|00004200| 0a 09 09 20 20 20 20 72 | 65 74 75 72 6e 3b 0a 09 |...    r|eturn;..|
|00004210| 09 7d 0a 09 09 2f 2a 0a | 09 09 20 2a 20 54 68 69 |.}.../*.|.. * Thi|
|00004220| 73 20 68 61 70 70 65 6e | 73 20 62 72 69 65 66 6c |s happen|s briefl|
|00004230| 79 20 77 68 65 6e 20 74 | 68 65 20 6c 69 6e 65 20 |y when t|he line |
|00004240| 73 68 75 74 73 20 64 6f | 77 6e 2e 0a 09 09 20 2a |shuts do|wn.... *|
|00004250| 2f 0a 09 09 69 66 20 28 | 73 63 20 3d 3d 20 4e 55 |/...if (|sc == NU|
|00004260| 4c 4c 29 0a 09 09 09 72 | 65 74 75 72 6e 3b 0a 0a |LL)....r|eturn;..|
|00004270| 09 09 2f 2a 0a 09 09 20 | 2a 20 47 65 74 20 61 20 |../*... |* Get a |
|00004280| 70 61 63 6b 65 74 20 61 | 6e 64 20 73 65 6e 64 20 |packet a|nd send |
|00004290| 69 74 20 74 6f 20 74 68 | 65 20 69 6e 74 65 72 66 |it to th|e interf|
|000042a0| 61 63 65 2e 0a 09 09 20 | 2a 2f 0a 09 09 73 20 3d |ace.... |*/...s =|
|000042b0| 20 73 70 6c 69 6d 70 28 | 29 3b 0a 09 09 49 46 5f | splimp(|);...IF_|
|000042c0| 44 45 51 55 45 55 45 28 | 26 73 63 2d 3e 73 63 5f |DEQUEUE(|&sc->sc_|
|000042d0| 69 66 2e 69 66 5f 73 6e | 64 2c 20 6d 29 3b 0a 09 |if.if_sn|d, m);..|
|000042e0| 09 73 70 6c 78 28 73 29 | 3b 0a 09 09 69 66 20 28 |.splx(s)|;...if (|
|000042f0| 6d 20 3d 3d 20 4e 55 4c | 4c 29 0a 09 09 09 72 65 |m == NUL|L)....re|
|00004300| 74 75 72 6e 3b 0a 0a 09 | 09 2f 2a 0a 09 09 20 2a |turn;...|./*... *|
|00004310| 20 54 68 65 20 65 78 74 | 72 61 20 50 50 50 5f 46 | The ext|ra PPP_F|
|00004320| 4c 41 47 20 77 69 6c 6c | 20 73 74 61 72 74 20 75 |LAG will| start u|
|00004330| 70 20 61 20 6e 65 77 20 | 70 61 63 6b 65 74 2c 20 |p a new |packet, |
|00004340| 61 6e 64 20 74 68 75 73 | 0a 09 09 20 2a 20 77 69 |and thus|... * wi|
|00004350| 6c 6c 20 66 6c 75 73 68 | 20 61 6e 79 20 61 63 63 |ll flush| any acc|
|00004360| 75 6d 75 6c 61 74 65 64 | 20 67 61 72 62 61 67 65 |umulated| garbage|
|00004370| 2e 20 20 57 65 20 64 6f | 20 74 68 69 73 20 77 68 |.  We do| this wh|
|00004380| 65 6e 65 76 65 72 0a 09 | 09 20 2a 20 74 68 65 20 |enever..|. * the |
|00004390| 6c 69 6e 65 20 6d 61 79 | 20 68 61 76 65 20 62 65 |line may| have be|
|000043a0| 65 6e 20 69 64 6c 65 20 | 66 6f 72 20 73 6f 6d 65 |en idle |for some|
|000043b0| 20 74 69 6d 65 2e 0a 09 | 09 20 2a 2f 0a 09 09 69 | time...|. */...i|
|000043c0| 66 20 28 52 42 5f 4c 45 | 4e 28 26 74 70 2d 3e 74 |f (RB_LE|N(&tp->t|
|000043d0| 5f 6f 75 74 29 20 3d 3d | 20 30 29 20 7b 0a 20 09 |_out) ==| 0) {. .|
|000043e0| 09 20 20 2b 2b 73 63 2d | 3e 73 63 5f 62 79 74 65 |.  ++sc-|>sc_byte|
|000043f0| 73 73 65 6e 74 3b 0a 09 | 09 20 20 28 76 6f 69 64 |ssent;..|.  (void|
|00004400| 29 20 70 75 74 63 28 50 | 50 50 5f 46 4c 41 47 2c |) putc(P|PP_FLAG,|
|00004410| 20 26 74 70 2d 3e 74 5f | 6f 75 74 29 3b 0a 09 09 | &tp->t_|out);...|
|00004420| 7d 0a 0a 09 09 77 68 69 | 6c 65 20 28 6d 29 20 7b |}....whi|le (m) {|
|00004430| 0a 09 09 09 73 74 61 72 | 74 20 3d 20 6d 74 6f 64 |....star|t = mtod|
|00004440| 28 6d 2c 20 75 5f 63 68 | 61 72 20 2a 29 3b 0a 09 |(m, u_ch|ar *);..|
|00004450| 09 09 6c 65 6e 20 3d 20 | 6d 2d 3e 6d 5f 6c 65 6e |..len = |m->m_len|
|00004460| 3b 0a 09 09 09 73 74 6f | 70 20 3d 20 73 74 61 72 |;....sto|p = star|
|00004470| 74 20 2b 20 6c 65 6e 3b | 0a 09 09 09 77 68 69 6c |t + len;|....whil|
|00004480| 65 20 28 6c 65 6e 20 3e | 20 30 29 20 7b 0a 09 09 |e (len >| 0) {...|
|00004490| 09 09 2f 2a 0a 09 09 09 | 09 20 2a 20 46 69 6e 64 |../*....|. * Find|
|000044a0| 20 6f 75 74 20 68 6f 77 | 20 6d 61 6e 79 20 62 79 | out how| many by|
|000044b0| 74 65 73 20 69 6e 20 74 | 68 65 20 73 74 72 69 6e |tes in t|he strin|
|000044c0| 67 20 77 65 20 63 61 6e | 0a 09 09 09 09 20 2a 20 |g we can|..... * |
|000044d0| 68 61 6e 64 6c 65 20 77 | 69 74 68 6f 75 74 20 64 |handle w|ithout d|
|000044e0| 6f 69 6e 67 20 73 6f 6d | 65 74 68 69 6e 67 20 73 |oing som|ething s|
|000044f0| 70 65 63 69 61 6c 2e 0a | 09 09 09 09 20 2a 2f 0a |pecial..|.... */.|
|00004500| 09 09 09 09 66 6f 72 20 | 28 63 70 20 3d 20 73 74 |....for |(cp = st|
|00004510| 61 72 74 3b 20 63 70 20 | 3c 20 73 74 6f 70 3b 20 |art; cp |< stop; |
|00004520| 63 70 2b 2b 29 0a 09 09 | 09 09 09 69 66 20 28 28 |cp++)...|...if ((|
|00004530| 2a 63 70 20 3d 3d 20 50 | 50 50 5f 46 4c 41 47 29 |*cp == P|PP_FLAG)|
|00004540| 20 7c 7c 0a 09 09 09 09 | 09 20 20 20 20 28 2a 63 | ||.....|.    (*c|
|00004550| 70 20 3d 3d 20 50 50 50 | 5f 45 53 43 41 50 45 29 |p == PPP|_ESCAPE)|
|00004560| 20 7c 7c 0a 09 09 09 09 | 09 20 20 20 20 28 2a 63 | ||.....|.    (*c|
|00004570| 70 20 3c 20 30 78 32 30 | 20 26 26 0a 09 09 09 09 |p < 0x20| &&.....|
|00004580| 09 20 20 20 20 20 28 73 | 63 2d 3e 73 63 5f 61 73 |.     (s|c->sc_as|
|00004590| 79 6e 63 6d 61 70 20 26 | 20 28 31 20 3c 3c 20 2a |yncmap &| (1 << *|
|000045a0| 63 70 29 29 29 29 0a 09 | 09 09 09 09 09 62 72 65 |cp))))..|.....bre|
|000045b0| 61 6b 3b 0a 09 09 09 09 | 6e 20 3d 20 63 70 20 2d |ak;.....|n = cp -|
|000045c0| 20 73 74 61 72 74 3b 0a | 09 09 09 09 69 66 20 28 | start;.|....if (|
|000045d0| 6e 29 20 7b 0a 09 09 09 | 09 20 20 69 6e 74 20 63 |n) {....|.  int c|
|000045e0| 63 3b 0a 09 09 09 09 20 | 20 2f 2a 0a 09 09 09 09 |c;..... | /*.....|
|000045f0| 20 20 20 2a 20 50 75 74 | 20 6e 20 63 68 61 72 61 |   * Put| n chara|
|00004600| 63 74 65 72 73 20 61 74 | 20 6f 6e 63 65 0a 09 09 |cters at| once...|
|00004610| 09 09 20 20 20 2a 20 69 | 6e 74 6f 20 74 68 65 20 |..   * i|nto the |
|00004620| 74 74 79 20 6f 75 74 70 | 75 74 20 71 75 65 75 65 |tty outp|ut queue|
|00004630| 2e 0a 09 09 09 09 20 20 | 20 2a 2f 0a 09 09 09 09 |......  | */.....|
|00004640| 20 20 69 66 20 28 63 63 | 20 3d 20 52 42 5f 43 4f |  if (cc| = RB_CO|
|00004650| 4e 54 49 47 50 55 54 28 | 26 74 70 2d 3e 74 5f 6f |NTIGPUT(|&tp->t_o|
|00004660| 75 74 29 29 20 7b 0a 09 | 09 09 09 20 20 20 20 63 |ut)) {..|...    c|
|00004670| 63 20 3d 20 6d 69 6e 20 | 28 63 63 2c 20 6e 29 3b |c = min |(cc, n);|
|00004680| 0a 09 09 09 09 20 20 20 | 20 62 63 6f 70 79 28 28 |.....   | bcopy((|
|00004690| 63 68 61 72 20 2a 29 73 | 74 61 72 74 2c 20 74 70 |char *)s|tart, tp|
|000046a0| 2d 3e 74 5f 6f 75 74 2e | 72 62 5f 74 6c 2c 20 63 |->t_out.|rb_tl, c|
|000046b0| 63 29 3b 0a 09 09 09 09 | 20 20 20 20 74 70 2d 3e |c);.....|    tp->|
|000046c0| 74 5f 6f 75 74 2e 72 62 | 5f 74 6c 20 3d 0a 09 09 |t_out.rb|_tl =...|
|000046d0| 09 09 20 20 20 20 20 20 | 52 42 5f 52 4f 4c 4c 4f |..      |RB_ROLLO|
|000046e0| 56 45 52 28 26 74 70 2d | 3e 74 5f 6f 75 74 2c 0a |VER(&tp-|>t_out,.|
|000046f0| 09 09 09 09 09 09 20 20 | 74 70 2d 3e 74 5f 6f 75 |......  |tp->t_ou|
|00004700| 74 2e 72 62 5f 74 6c 20 | 2b 20 63 63 29 3b 0a 09 |t.rb_tl |+ cc);..|
|00004710| 09 09 09 20 20 7d 20 65 | 6c 73 65 0a 09 09 09 09 |...  } e|lse.....|
|00004720| 20 20 20 20 62 72 65 61 | 6b 3b 0a 0a 09 09 09 09 |    brea|k;......|
|00004730| 20 20 6c 65 6e 20 2d 3d | 20 63 63 3b 0a 09 09 09 |  len -=| cc;....|
|00004740| 09 20 20 73 74 61 72 74 | 20 2b 3d 20 63 63 3b 0a |.  start| += cc;.|
|00004750| 09 09 09 09 20 20 73 63 | 2d 3e 73 63 5f 62 79 74 |....  sc|->sc_byt|
|00004760| 65 73 73 65 6e 74 20 2b | 3d 20 63 63 3b 0a 09 09 |essent +|= cc;...|
|00004770| 09 09 7d 0a 09 09 09 09 | 2f 2a 0a 09 09 09 09 20 |..}.....|/*..... |
|00004780| 2a 20 49 66 20 74 68 65 | 72 65 20 61 72 65 20 63 |* If the|re are c|
|00004790| 68 61 72 61 63 74 65 72 | 73 20 6c 65 66 74 20 69 |haracter|s left i|
|000047a0| 6e 20 74 68 65 20 6d 62 | 75 66 2c 0a 09 09 09 09 |n the mb|uf,.....|
|000047b0| 20 2a 20 74 68 65 20 66 | 69 72 73 74 20 6f 6e 65 | * the f|irst one|
|000047c0| 20 6d 75 73 74 20 62 65 | 20 73 70 65 63 69 61 6c | must be| special|
|000047d0| 2e 2e 0a 09 09 09 09 20 | 2a 20 50 75 74 20 69 74 |....... |* Put it|
|000047e0| 20 6f 75 74 20 69 6e 20 | 61 20 64 69 66 66 65 72 | out in |a differ|
|000047f0| 65 6e 74 20 66 6f 72 6d | 2e 0a 09 09 09 09 20 2a |ent form|...... *|
|00004800| 2f 0a 09 09 09 09 69 66 | 20 28 6c 65 6e 29 20 7b |/.....if| (len) {|
|00004810| 0a 09 09 09 09 09 69 66 | 20 28 70 75 74 63 28 50 |......if| (putc(P|
|00004820| 50 50 5f 45 53 43 41 50 | 45 2c 20 26 74 70 2d 3e |PP_ESCAP|E, &tp->|
|00004830| 74 5f 6f 75 74 29 29 0a | 09 09 09 09 09 09 62 72 |t_out)).|......br|
|00004840| 65 61 6b 3b 0a 09 09 09 | 09 09 69 66 20 28 70 75 |eak;....|..if (pu|
|00004850| 74 63 28 2a 73 74 61 72 | 74 20 5e 20 50 50 50 5f |tc(*star|t ^ PPP_|
|00004860| 54 52 41 4e 53 2c 0a 09 | 09 09 09 09 09 20 26 74 |TRANS,..|..... &t|
|00004870| 70 2d 3e 74 5f 6f 75 74 | 29 29 20 7b 0a 09 09 09 |p->t_out|)) {....|
|00004880| 09 09 09 28 76 6f 69 64 | 29 20 75 6e 70 75 74 63 |...(void|) unputc|
|00004890| 28 26 74 70 2d 3e 74 5f | 6f 75 74 29 3b 0a 09 09 |(&tp->t_|out);...|
|000048a0| 09 09 09 09 62 72 65 61 | 6b 3b 0a 09 09 09 09 09 |....brea|k;......|
|000048b0| 7d 0a 09 09 09 09 09 73 | 63 2d 3e 73 63 5f 62 79 |}......s|c->sc_by|
|000048c0| 74 65 73 73 65 6e 74 20 | 2b 3d 20 32 3b 0a 09 09 |tessent |+= 2;...|
|000048d0| 09 09 09 73 74 61 72 74 | 2b 2b 3b 0a 09 09 09 09 |...start|++;.....|
|000048e0| 09 6c 65 6e 2d 2d 3b 0a | 09 09 09 09 7d 0a 09 09 |.len--;.|....}...|
|000048f0| 09 7d 0a 09 09 09 4d 46 | 52 45 45 28 6d 2c 20 6d |.}....MF|REE(m, m|
|00004900| 32 29 3b 0a 09 09 09 6d | 20 3d 20 6d 32 3b 0a 09 |2);....m| = m2;..|
|00004910| 09 7d 0a 0a 09 09 69 66 | 20 28 70 75 74 63 28 50 |.}....if| (putc(P|
|00004920| 50 50 5f 46 4c 41 47 2c | 20 26 74 70 2d 3e 74 5f |PP_FLAG,| &tp->t_|
|00004930| 6f 75 74 29 29 20 7b 0a | 09 09 09 2f 2a 0a 09 09 |out)) {.|.../*...|
|00004940| 09 20 2a 20 4e 6f 74 20 | 65 6e 6f 75 67 68 20 72 |. * Not |enough r|
|00004950| 6f 6f 6d 2e 20 20 52 65 | 6d 6f 76 65 20 61 20 63 |oom.  Re|move a c|
|00004960| 68 61 72 20 74 6f 20 6d | 61 6b 65 20 72 6f 6f 6d |har to m|ake room|
|00004970| 0a 09 09 09 20 2a 20 61 | 6e 64 20 65 6e 64 20 74 |.... * a|nd end t|
|00004980| 68 65 20 70 61 63 6b 65 | 74 20 6e 6f 72 6d 61 6c |he packe|t normal|
|00004990| 6c 79 2e 0a 09 09 09 20 | 2a 20 49 66 20 79 6f 75 |ly..... |* If you|
|000049a0| 20 67 65 74 20 6d 61 6e | 79 20 63 6f 6c 6c 69 73 | get man|y collis|
|000049b0| 69 6f 6e 73 20 28 6d 6f | 72 65 20 74 68 61 6e 20 |ions (mo|re than |
|000049c0| 6f 6e 65 20 6f 72 20 74 | 77 6f 0a 09 09 09 20 2a |one or t|wo.... *|
|000049d0| 20 61 20 64 61 79 29 20 | 79 6f 75 20 70 72 6f 62 | a day) |you prob|
|000049e0| 61 62 6c 79 20 64 6f 20 | 6e 6f 74 20 68 61 76 65 |ably do |not have|
|000049f0| 20 65 6e 6f 75 67 68 20 | 63 6c 69 73 74 73 0a 09 | enough |clists..|
|00004a00| 09 09 20 2a 20 61 6e 64 | 20 79 6f 75 20 73 68 6f |.. * and| you sho|
|00004a10| 75 6c 64 20 69 6e 63 72 | 65 61 73 65 20 22 6e 63 |uld incr|ease "nc|
|00004a20| 6c 69 73 74 22 20 69 6e | 20 70 61 72 61 6d 2e 63 |list" in| param.c|
|00004a30| 2e 0a 09 09 09 20 2a 2f | 0a 09 09 09 28 76 6f 69 |..... */|....(voi|
|00004a40| 64 29 20 75 6e 70 75 74 | 63 28 26 74 70 2d 3e 74 |d) unput|c(&tp->t|
|00004a50| 5f 6f 75 74 29 3b 0a 09 | 09 09 28 76 6f 69 64 29 |_out);..|..(void)|
|00004a60| 20 70 75 74 63 28 50 50 | 50 5f 46 4c 41 47 2c 20 | putc(PP|P_FLAG, |
|00004a70| 26 74 70 2d 3e 74 5f 6f | 75 74 29 3b 0a 09 09 09 |&tp->t_o|ut);....|
|00004a80| 73 63 2d 3e 73 63 5f 69 | 66 2e 69 66 5f 63 6f 6c |sc->sc_i|f.if_col|
|00004a90| 6c 69 73 69 6f 6e 73 2b | 2b 3b 0a 09 09 7d 20 65 |lisions+|+;...} e|
|00004aa0| 6c 73 65 20 7b 0a 09 09 | 09 73 63 2d 3e 73 63 5f |lse {...|.sc->sc_|
|00004ab0| 62 79 74 65 73 73 65 6e | 74 2b 2b 3b 0a 09 09 09 |bytessen|t++;....|
|00004ac0| 73 63 2d 3e 73 63 5f 69 | 66 2e 69 66 5f 6f 70 61 |sc->sc_i|f.if_opa|
|00004ad0| 63 6b 65 74 73 2b 2b 3b | 0a 09 09 20 20 20 20 20 |ckets++;|...     |
|00004ae0| 20 7d 0a 09 09 73 63 2d | 3e 73 63 5f 69 66 2e 69 | }...sc-|>sc_if.i|
|00004af0| 66 5f 6f 62 79 74 65 73 | 20 3d 20 73 63 2d 3e 73 |f_obytes| = sc->s|
|00004b00| 63 5f 62 79 74 65 73 73 | 65 6e 74 3b 0a 09 7d 0a |c_bytess|ent;..}.|
|00004b10| 7d 0a 0a 2f 2a 0a 20 2a | 20 41 6c 6c 6f 63 61 74 |}../*. *| Allocat|
|00004b20| 65 20 65 6e 6f 75 67 68 | 20 6d 62 75 66 20 74 6f |e enough| mbuf to|
|00004b30| 20 68 61 6e 64 6c 65 20 | 63 75 72 72 65 6e 74 20 | handle |current |
|00004b40| 4d 54 55 2e 0a 20 2a 2f | 0a 70 70 70 69 6e 69 74 |MTU.. */|.pppinit|
|00004b50| 28 73 63 29 0a 09 72 65 | 67 69 73 74 65 72 20 73 |(sc)..re|gister s|
|00004b60| 74 72 75 63 74 20 70 70 | 70 5f 73 6f 66 74 63 20 |truct pp|p_softc |
|00004b70| 2a 73 63 3b 0a 7b 0a 09 | 73 74 72 75 63 74 20 6d |*sc;.{..|struct m|
|00004b80| 62 75 66 20 2a 6d 2c 20 | 2a 2a 6d 70 3b 0a 09 69 |buf *m, |**mp;..i|
|00004b90| 6e 74 20 6c 65 6e 20 3d | 20 4d 41 58 28 73 63 2d |nt len =| MAX(sc-|
|00004ba0| 3e 73 63 5f 69 66 2e 69 | 66 5f 6d 74 75 2c 20 50 |>sc_if.i|f_mtu, P|
|00004bb0| 50 50 5f 4d 54 55 29 20 | 2b 0a 09 20 20 20 20 73 |PP_MTU) |+..    s|
|00004bc0| 69 7a 65 6f 66 20 28 73 | 74 72 75 63 74 20 70 70 |izeof (s|truct pp|
|00004bd0| 70 5f 68 65 61 64 65 72 | 29 20 2b 20 73 69 7a 65 |p_header|) + size|
|00004be0| 6f 66 20 28 75 5f 73 68 | 6f 72 74 29 3b 0a 09 69 |of (u_sh|ort);..i|
|00004bf0| 6e 74 20 73 3b 0a 0a 0a | 09 73 20 3d 20 73 70 6c |nt s;...|.s = spl|
|00004c00| 69 6d 70 28 29 3b 0a 09 | 66 6f 72 20 28 6d 70 20 |imp();..|for (mp |
|00004c10| 3d 20 26 73 63 2d 3e 73 | 63 5f 6d 3b 20 2a 6d 70 |= &sc->s|c_m; *mp|
|00004c20| 3b 20 6d 70 20 3d 20 26 | 28 2a 6d 70 29 2d 3e 6d |; mp = &|(*mp)->m|
|00004c30| 5f 6e 65 78 74 29 0a 09 | 09 69 66 20 28 28 6c 65 |_next)..|.if ((le|
|00004c40| 6e 20 2d 3d 20 4d 5f 54 | 52 41 49 4c 49 4e 47 53 |n -= M_T|RAILINGS|
|00004c50| 50 41 43 45 28 2a 6d 70 | 29 20 2b 20 48 44 52 4f |PACE(*mp|) + HDRO|
|00004c60| 46 46 29 20 3c 3d 20 30 | 29 20 7b 0a 09 09 09 73 |FF) <= 0|) {....s|
|00004c70| 70 6c 78 28 73 29 3b 0a | 09 09 09 72 65 74 75 72 |plx(s);.|...retur|
|00004c80| 6e 20 28 31 29 3b 0a 09 | 09 7d 0a 0a 09 66 6f 72 |n (1);..|.}...for|
|00004c90| 20 28 3b 3b 20 6d 70 20 | 3d 20 26 6d 2d 3e 6d 5f | (;; mp |= &m->m_|
|00004ca0| 6e 65 78 74 29 20 7b 0a | 09 09 4d 47 45 54 48 44 |next) {.|..MGETHD|
|00004cb0| 52 28 6d 2c 20 4d 5f 44 | 4f 4e 54 57 41 49 54 2c |R(m, M_D|ONTWAIT,|
|00004cc0| 20 4d 54 5f 44 41 54 41 | 29 3b 0a 09 09 69 66 20 | MT_DATA|);...if |
|00004cd0| 28 6d 29 20 7b 0a 09 09 | 09 2a 6d 70 20 3d 20 6d |(m) {...|.*mp = m|
|00004ce0| 3b 0a 09 09 09 4d 43 4c | 47 45 54 28 6d 2c 20 4d |;....MCL|GET(m, M|
|00004cf0| 5f 44 4f 4e 54 57 41 49 | 54 29 3b 0a 09 09 09 6d |_DONTWAI|T);....m|
|00004d00| 2d 3e 6d 5f 64 61 74 61 | 20 2b 3d 20 48 44 52 4f |->m_data| += HDRO|
|00004d10| 46 46 3b 0a 09 09 09 69 | 66 20 28 28 6c 65 6e 20 |FF;....i|f ((len |
|00004d20| 2d 3d 20 4d 5f 54 52 41 | 49 4c 49 4e 47 53 50 41 |-= M_TRA|ILINGSPA|
|00004d30| 43 45 28 6d 29 20 2b 20 | 48 44 52 4f 46 46 29 20 |CE(m) + |HDROFF) |
|00004d40| 3c 3d 20 30 29 20 7b 0a | 09 09 09 09 73 70 6c 78 |<= 0) {.|....splx|
|00004d50| 28 73 29 3b 0a 09 09 09 | 09 72 65 74 75 72 6e 20 |(s);....|.return |
|00004d60| 28 31 29 3b 0a 09 09 09 | 7d 0a 09 09 7d 0a 09 09 |(1);....|}...}...|
|00004d70| 65 6c 73 65 20 7b 0a 09 | 09 09 6d 5f 66 72 65 65 |else {..|..m_free|
|00004d80| 6d 28 73 63 2d 3e 73 63 | 5f 6d 29 3b 0a 09 09 09 |m(sc->sc|_m);....|
|00004d90| 73 63 2d 3e 73 63 5f 6d | 20 3d 20 4e 55 4c 4c 3b |sc->sc_m| = NULL;|
|00004da0| 0a 09 09 09 73 70 6c 78 | 28 73 29 3b 0a 09 09 09 |....splx|(s);....|
|00004db0| 70 72 69 6e 74 66 28 22 | 70 70 70 25 64 3a 20 63 |printf("|ppp%d: c|
|00004dc0| 61 6e 27 74 20 61 6c 6c | 6f 63 61 74 65 20 6d 62 |an't all|ocate mb|
|00004dd0| 75 66 5c 6e 22 2c 20 73 | 63 20 2d 20 70 70 70 5f |uf\n", s|c - ppp_|
|00004de0| 73 6f 66 74 63 29 3b 0a | 09 09 09 72 65 74 75 72 |softc);.|...retur|
|00004df0| 6e 20 28 30 29 3b 0a 09 | 09 7d 0a 09 7d 0a 7d 0a |n (0);..|.}..}.}.|
|00004e00| 0a 2f 2a 0a 20 2a 20 43 | 6f 70 79 20 6d 62 75 66 |./*. * C|opy mbuf|
|00004e10| 20 63 68 61 69 6e 2e 20 | 20 57 6f 75 6c 64 20 6c | chain. | Would l|
|00004e20| 69 6b 65 20 74 6f 20 75 | 73 65 20 6d 5f 63 6f 70 |ike to u|se m_cop|
|00004e30| 79 28 29 2c 20 62 75 74 | 20 77 65 20 6e 65 65 64 |y(), but| we need|
|00004e40| 20 61 20 72 65 61 6c 20 | 63 6f 70 79 0a 20 2a 20 | a real |copy. * |
|00004e50| 6f 66 20 74 68 65 20 64 | 61 74 61 2c 20 6e 6f 74 |of the d|ata, not|
|00004e60| 20 6a 75 73 74 20 63 6f | 70 69 65 73 20 6f 66 20 | just co|pies of |
|00004e70| 70 6f 69 6e 74 65 72 73 | 20 74 6f 20 74 68 65 20 |pointers| to the |
|00004e80| 64 61 74 61 2e 0a 20 2a | 2f 0a 73 74 72 75 63 74 |data.. *|/.struct|
|00004e90| 20 6d 62 75 66 20 2a 0a | 70 70 70 5f 62 74 6f 6d | mbuf *.|ppp_btom|
|00004ea0| 28 73 63 29 0a 09 73 74 | 72 75 63 74 20 70 70 70 |(sc)..st|ruct ppp|
|00004eb0| 5f 73 6f 66 74 63 20 2a | 73 63 3b 0a 7b 0a 09 72 |_softc *|sc;.{..r|
|00004ec0| 65 67 69 73 74 65 72 20 | 73 74 72 75 63 74 20 6d |egister |struct m|
|00004ed0| 62 75 66 20 2a 6d 2c 20 | 2a 2a 6d 70 3b 0a 09 73 |buf *m, |**mp;..s|
|00004ee0| 74 72 75 63 74 20 6d 62 | 75 66 20 2a 74 6f 70 20 |truct mb|uf *top |
|00004ef0| 3d 20 73 63 2d 3e 73 63 | 5f 6d 3b 0a 0a 09 2f 2a |= sc->sc|_m;.../*|
|00004f00| 0a 09 20 2a 20 46 69 72 | 73 74 20 63 68 65 63 6b |.. * Fir|st check|
|00004f10| 20 63 75 72 72 65 6e 74 | 20 6d 62 75 66 2e 20 20 | current| mbuf.  |
|00004f20| 49 66 20 77 65 20 68 61 | 76 65 20 6d 6f 72 65 20 |If we ha|ve more |
|00004f30| 74 68 61 6e 20 61 20 73 | 6d 61 6c 6c 20 6d 62 75 |than a s|mall mbu|
|00004f40| 66 2c 0a 09 20 2a 20 72 | 65 74 75 72 6e 20 74 68 |f,.. * r|eturn th|
|00004f50| 65 20 77 68 6f 6c 65 20 | 63 6c 75 73 74 65 72 20 |e whole |cluster |
|00004f60| 61 6e 64 20 73 65 74 20 | 62 65 67 69 6e 6e 69 6e |and set |beginnin|
|00004f70| 67 20 6f 66 20 62 75 66 | 66 65 72 20 74 6f 20 74 |g of buf|fer to t|
|00004f80| 68 65 0a 09 20 2a 20 6e | 65 78 74 20 6d 62 75 66 |he.. * n|ext mbuf|
|00004f90| 2e 0a 09 20 2a 20 45 6c | 73 65 2c 20 63 6f 70 79 |... * El|se, copy|
|00004fa0| 20 74 68 65 20 63 75 72 | 72 65 6e 74 20 62 79 74 | the cur|rent byt|
|00004fb0| 65 73 20 69 6e 74 6f 20 | 61 20 73 6d 61 6c 6c 20 |es into |a small |
|00004fc0| 6d 62 75 66 2c 20 61 74 | 74 61 63 68 20 74 68 65 |mbuf, at|tach the|
|00004fd0| 20 6e 65 77 0a 09 20 2a | 20 6d 62 75 66 20 74 6f | new.. *| mbuf to|
|00004fe0| 20 74 68 65 20 65 6e 64 | 20 6f 66 20 74 68 65 20 | the end| of the |
|00004ff0| 63 68 61 69 6e 20 61 6e | 64 20 73 65 74 20 62 65 |chain an|d set be|
|00005000| 67 69 6e 6e 69 6e 67 20 | 6f 66 20 62 75 66 66 65 |ginning |of buffe|
|00005010| 72 20 74 6f 20 74 68 65 | 0a 09 20 2a 20 63 75 72 |r to the|.. * cur|
|00005020| 72 65 6e 74 20 6d 62 75 | 66 2e 0a 09 20 2a 2f 0a |rent mbu|f... */.|
|00005030| 0a 09 69 66 20 28 73 63 | 2d 3e 73 63 5f 6d 63 2d |..if (sc|->sc_mc-|
|00005040| 3e 6d 5f 6c 65 6e 20 3e | 20 4d 48 4c 45 4e 20 2d |>m_len >| MHLEN -|
|00005050| 20 48 44 52 4f 46 46 29 | 20 7b 0a 09 09 73 63 2d | HDROFF)| {...sc-|
|00005060| 3e 73 63 5f 6d 20 3d 20 | 73 63 2d 3e 73 63 5f 6d |>sc_m = |sc->sc_m|
|00005070| 63 2d 3e 6d 5f 6e 65 78 | 74 3b 0a 09 09 73 63 2d |c->m_nex|t;...sc-|
|00005080| 3e 73 63 5f 6d 63 2d 3e | 6d 5f 6e 65 78 74 20 3d |>sc_mc->|m_next =|
|00005090| 20 4e 55 4c 4c 3b 0a 09 | 7d 0a 09 65 6c 73 65 20 | NULL;..|}..else |
|000050a0| 7b 0a 09 20 20 20 20 2f | 2a 20 72 61 74 68 65 72 |{..    /|* rather|
|000050b0| 20 74 68 61 6e 20 77 61 | 73 74 65 20 61 20 68 6f | than wa|ste a ho|
|000050c0| 6c 65 20 63 6c 75 73 74 | 65 72 20 6f 6e 20 3c 4d |le clust|er on <M|
|000050d0| 48 4c 45 4e 20 62 79 74 | 65 73 2c 0a 09 20 20 20 |HLEN byt|es,..   |
|000050e0| 20 20 20 20 61 6c 6c 6f | 63 20 61 20 73 6d 61 6c |    allo|c a smal|
|000050f0| 6c 20 6d 62 75 66 20 61 | 6e 64 20 63 6f 70 79 20 |l mbuf a|nd copy |
|00005100| 74 6f 20 69 74 20 2a 2f | 0a 09 20 20 20 20 4d 47 |to it */|..    MG|
|00005110| 45 54 48 44 52 28 6d 2c | 20 4d 5f 44 4f 4e 54 57 |ETHDR(m,| M_DONTW|
|00005120| 41 49 54 2c 20 4d 54 5f | 44 41 54 41 29 3b 0a 09 |AIT, MT_|DATA);..|
|00005130| 20 20 20 20 69 66 20 28 | 6d 20 3d 3d 20 4e 55 4c |    if (|m == NUL|
|00005140| 4c 29 0a 09 09 72 65 74 | 75 72 6e 20 28 4e 55 4c |L)...ret|urn (NUL|
|00005150| 4c 29 3b 0a 0a 09 20 20 | 20 20 6d 2d 3e 6d 5f 64 |L);...  |  m->m_d|
|00005160| 61 74 61 20 2b 3d 20 48 | 44 52 4f 46 46 3b 0a 09 |ata += H|DROFF;..|
|00005170| 20 20 20 20 62 63 6f 70 | 79 28 6d 74 6f 64 28 73 |    bcop|y(mtod(s|
|00005180| 63 2d 3e 73 63 5f 6d 63 | 2c 20 63 61 64 64 72 5f |c->sc_mc|, caddr_|
|00005190| 74 29 2c 20 6d 74 6f 64 | 28 6d 2c 20 63 61 64 64 |t), mtod|(m, cadd|
|000051a0| 72 5f 74 29 2c 0a 09 09 | 20 20 73 63 2d 3e 73 63 |r_t),...|  sc->sc|
|000051b0| 5f 6d 63 2d 3e 6d 5f 6c | 65 6e 29 3b 0a 09 20 20 |_mc->m_l|en);..  |
|000051c0| 20 20 6d 2d 3e 6d 5f 6c | 65 6e 20 3d 20 73 63 2d |  m->m_l|en = sc-|
|000051d0| 3e 73 63 5f 6d 63 2d 3e | 6d 5f 6c 65 6e 3b 0a 09 |>sc_mc->|m_len;..|
|000051e0| 20 20 20 20 66 6f 72 20 | 28 6d 70 20 3d 20 26 74 |    for |(mp = &t|
|000051f0| 6f 70 3b 20 2a 6d 70 20 | 21 3d 20 73 63 2d 3e 73 |op; *mp |!= sc->s|
|00005200| 63 5f 6d 63 3b 20 6d 70 | 20 3d 20 26 28 2a 6d 70 |c_mc; mp| = &(*mp|
|00005210| 29 2d 3e 6d 5f 6e 65 78 | 74 29 0a 09 09 3b 0a 09 |)->m_nex|t)...;..|
|00005220| 20 20 20 20 2a 6d 70 20 | 3d 20 6d 3b 0a 09 20 20 |    *mp |= m;..  |
|00005230| 20 20 73 63 2d 3e 73 63 | 5f 6d 20 3d 20 73 63 2d |  sc->sc|_m = sc-|
|00005240| 3e 73 63 5f 6d 63 3b 0a | 09 7d 0a 0a 09 69 66 20 |>sc_mc;.|.}...if |
|00005250| 28 70 70 70 69 6e 69 74 | 28 73 63 29 20 3d 3d 20 |(pppinit|(sc) == |
|00005260| 30 29 20 7b 0a 09 09 6d | 5f 66 72 65 65 6d 28 74 |0) {...m|_freem(t|
|00005270| 6f 70 29 3b 0a 09 09 69 | 66 20 28 70 70 70 69 6e |op);...i|f (pppin|
|00005280| 69 74 28 73 63 29 20 3d | 3d 20 30 29 0a 09 09 09 |it(sc) =|= 0)....|
|00005290| 73 63 2d 3e 73 63 5f 69 | 66 2e 69 66 5f 66 6c 61 |sc->sc_i|f.if_fla|
|000052a0| 67 73 20 26 3d 20 7e 49 | 46 46 5f 55 50 3b 0a 09 |gs &= ~I|FF_UP;..|
|000052b0| 09 72 65 74 75 72 6e 20 | 28 4e 55 4c 4c 29 3b 0a |.return |(NULL);.|
|000052c0| 09 7d 0a 0a 09 74 6f 70 | 2d 3e 6d 5f 70 6b 74 68 |.}...top|->m_pkth|
|000052d0| 64 72 2e 6c 65 6e 20 3d | 20 73 63 2d 3e 73 63 5f |dr.len =| sc->sc_|
|000052e0| 69 6c 65 6e 3b 0a 09 74 | 6f 70 2d 3e 6d 5f 70 6b |ilen;..t|op->m_pk|
|000052f0| 74 68 64 72 2e 72 63 76 | 69 66 20 3d 20 26 73 63 |thdr.rcv|if = &sc|
|00005300| 2d 3e 73 63 5f 69 66 3b | 0a 09 72 65 74 75 72 6e |->sc_if;|..return|
|00005310| 20 28 74 6f 70 29 3b 0a | 7d 0a 0a 2f 2a 0a 20 2a | (top);.|}../*. *|
|00005320| 20 74 74 79 20 69 6e 74 | 65 72 66 61 63 65 20 72 | tty int|erface r|
|00005330| 65 63 65 69 76 65 72 20 | 69 6e 74 65 72 72 75 70 |eceiver |interrup|
|00005340| 74 2e 0a 20 2a 2f 0a 70 | 70 70 69 6e 70 75 74 28 |t.. */.p|ppinput(|
|00005350| 63 2c 20 74 70 29 0a 09 | 69 6e 74 20 63 3b 0a 09 |c, tp)..|int c;..|
|00005360| 72 65 67 69 73 74 65 72 | 20 73 74 72 75 63 74 20 |register| struct |
|00005370| 74 74 79 20 2a 74 70 3b | 0a 7b 0a 20 20 20 20 72 |tty *tp;|.{.    r|
|00005380| 65 67 69 73 74 65 72 20 | 73 74 72 75 63 74 20 70 |egister |struct p|
|00005390| 70 70 5f 73 6f 66 74 63 | 20 2a 73 63 3b 0a 20 20 |pp_softc| *sc;.  |
|000053a0| 20 20 73 74 72 75 63 74 | 20 6d 62 75 66 20 2a 6d |  struct| mbuf *m|
|000053b0| 3b 0a 20 20 20 20 73 74 | 72 75 63 74 20 69 66 71 |;.    st|ruct ifq|
|000053c0| 75 65 75 65 20 2a 69 6e | 71 3b 0a 20 20 20 20 73 |ueue *in|q;.    s|
|000053d0| 74 72 75 63 74 20 70 70 | 70 5f 68 65 61 64 65 72 |truct pp|p_header|
|000053e0| 20 2a 70 68 3b 0a 20 20 | 20 20 69 6e 74 20 73 3b | *ph;.  |  int s;|
|000053f0| 0a 0a 20 20 20 20 74 6b | 5f 6e 69 6e 2b 2b 3b 0a |..    tk|_nin++;.|
|00005400| 20 20 20 20 73 63 20 3d | 20 28 73 74 72 75 63 74 |    sc =| (struct|
|00005410| 20 70 70 70 5f 73 6f 66 | 74 63 20 2a 29 74 70 2d | ppp_sof|tc *)tp-|
|00005420| 3e 74 5f 73 63 3b 0a 20 | 20 20 20 69 66 20 28 73 |>t_sc;. |   if (s|
|00005430| 63 20 3d 3d 20 4e 55 4c | 4c 29 0a 09 72 65 74 75 |c == NUL|L)..retu|
|00005440| 72 6e 3b 0a 0a 20 20 20 | 20 2b 2b 73 63 2d 3e 73 |rn;..   | ++sc->s|
|00005450| 63 5f 69 66 2e 69 66 5f | 69 62 79 74 65 73 3b 0a |c_if.if_|ibytes;.|
|00005460| 20 20 20 20 63 20 26 3d | 20 30 78 66 66 3b 0a 20 |    c &=| 0xff;. |
|00005470| 20 20 20 69 66 20 28 63 | 20 3d 3d 20 50 50 50 5f |   if (c| == PPP_|
|00005480| 46 4c 41 47 29 20 7b 0a | 09 73 63 2d 3e 73 63 5f |FLAG) {.|.sc->sc_|
|00005490| 66 6c 61 67 73 20 26 3d | 20 7e 53 43 5f 46 4c 55 |flags &=| ~SC_FLU|
|000054a0| 53 48 3b 0a 0a 09 69 66 | 20 28 73 63 2d 3e 73 63 |SH;...if| (sc->sc|
|000054b0| 5f 69 6c 65 6e 20 3e 20 | 32 29 20 7b 0a 09 20 20 |_ilen > |2) {..  |
|000054c0| 20 20 2f 2a 0a 09 20 20 | 20 20 20 2a 20 52 65 6d |  /*..  |   * Rem|
|000054d0| 6f 76 65 20 46 43 53 20 | 74 72 61 69 6c 65 72 2e |ove FCS |trailer.|
|000054e0| 20 20 53 6f 6d 65 77 68 | 61 74 20 70 61 69 6e 66 |  Somewh|at painf|
|000054f0| 75 6c 2e 2e 2e 0a 09 20 | 20 20 20 20 2a 2f 0a 09 |ul..... |    */..|
|00005500| 20 20 20 20 73 63 2d 3e | 73 63 5f 69 6c 65 6e 20 |    sc->|sc_ilen |
|00005510| 2d 3d 20 32 3b 0a 09 20 | 20 20 20 69 66 20 28 2d |-= 2;.. |   if (-|
|00005520| 2d 73 63 2d 3e 73 63 5f | 6d 63 2d 3e 6d 5f 6c 65 |-sc->sc_|mc->m_le|
|00005530| 6e 20 3d 3d 20 30 29 20 | 7b 0a 09 09 66 6f 72 20 |n == 0) |{...for |
|00005540| 28 6d 20 3d 20 73 63 2d | 3e 73 63 5f 6d 3b 0a 09 |(m = sc-|>sc_m;..|
|00005550| 09 20 20 20 20 20 6d 2d | 3e 6d 5f 6e 65 78 74 20 |.     m-|>m_next |
|00005560| 21 3d 20 73 63 2d 3e 73 | 63 5f 6d 63 3b 0a 09 09 |!= sc->s|c_mc;...|
|00005570| 20 20 20 20 20 6d 20 3d | 20 6d 2d 3e 6d 5f 6e 65 |     m =| m->m_ne|
|00005580| 78 74 29 0a 09 09 20 20 | 20 20 3b 0a 09 09 73 63 |xt)...  |  ;...sc|
|00005590| 2d 3e 73 63 5f 6d 63 20 | 3d 20 6d 3b 0a 09 20 20 |->sc_mc |= m;..  |
|000055a0| 20 20 7d 0a 09 20 20 20 | 20 73 63 2d 3e 73 63 5f |  }..   | sc->sc_|
|000055b0| 6d 63 2d 3e 6d 5f 6c 65 | 6e 2d 2d 3b 0a 09 7d 0a |mc->m_le|n--;..}.|
|000055c0| 0a 09 69 66 20 28 73 63 | 2d 3e 73 63 5f 69 6c 65 |..if (sc|->sc_ile|
|000055d0| 6e 20 3c 20 73 69 7a 65 | 6f 66 20 28 73 74 72 75 |n < size|of (stru|
|000055e0| 63 74 20 70 70 70 5f 68 | 65 61 64 65 72 29 29 20 |ct ppp_h|eader)) |
|000055f0| 7b 0a 09 20 20 20 20 69 | 66 20 28 73 63 2d 3e 73 |{..    i|f (sc->s|
|00005600| 63 5f 69 6c 65 6e 29 20 | 7b 0a 09 09 69 66 20 28 |c_ilen) |{...if (|
|00005610| 70 70 70 5f 64 65 62 75 | 67 29 0a 09 09 20 20 20 |ppp_debu|g)...   |
|00005620| 20 70 72 69 6e 74 66 28 | 22 70 70 70 3a 20 74 6f | printf(|"ppp: to|
|00005630| 6f 20 73 68 6f 72 74 20 | 25 64 5c 6e 22 2c 20 73 |o short |%d\n", s|
|00005640| 63 2d 3e 73 63 5f 69 6c | 65 6e 29 3b 0a 09 09 73 |c->sc_il|en);...s|
|00005650| 63 2d 3e 73 63 5f 69 66 | 2e 69 66 5f 69 65 72 72 |c->sc_if|.if_ierr|
|00005660| 6f 72 73 2b 2b 3b 0a 09 | 20 20 20 20 7d 0a 09 20 |ors++;..|    }.. |
|00005670| 20 20 20 73 63 2d 3e 73 | 63 5f 69 6c 65 6e 20 3d |   sc->s|c_ilen =|
|00005680| 20 30 3b 0a 09 20 20 20 | 20 72 65 74 75 72 6e 3b | 0;..   | return;|
|00005690| 0a 09 7d 0a 09 69 66 20 | 28 73 63 2d 3e 73 63 5f |..}..if |(sc->sc_|
|000056a0| 66 63 73 20 21 3d 20 50 | 50 50 5f 47 4f 4f 44 46 |fcs != P|PP_GOODF|
|000056b0| 43 53 20 7c 7c 0a 09 20 | 20 20 20 28 28 6d 20 3d |CS ||.. |   ((m =|
|000056c0| 20 70 70 70 5f 62 74 6f | 6d 28 73 63 29 29 20 3d | ppp_bto|m(sc)) =|
|000056d0| 3d 20 4e 55 4c 4c 29 29 | 20 7b 0a 09 20 20 20 20 |= NULL))| {..    |
|000056e0| 69 66 20 28 70 70 70 5f | 64 65 62 75 67 29 0a 09 |if (ppp_|debug)..|
|000056f0| 09 70 72 69 6e 74 66 28 | 22 70 70 70 3a 20 62 61 |.printf(|"ppp: ba|
|00005700| 64 20 66 63 73 5c 6e 22 | 29 3b 0a 09 20 20 20 20 |d fcs\n"|);..    |
|00005710| 73 63 2d 3e 73 63 5f 69 | 66 2e 69 66 5f 69 65 72 |sc->sc_i|f.if_ier|
|00005720| 72 6f 72 73 2b 2b 3b 0a | 09 20 20 20 20 73 63 2d |rors++;.|.    sc-|
|00005730| 3e 73 63 5f 69 6c 65 6e | 20 3d 20 30 3b 0a 09 20 |>sc_ilen| = 0;.. |
|00005740| 20 20 20 72 65 74 75 72 | 6e 3b 0a 09 7d 0a 0a 09 |   retur|n;..}...|
|00005750| 73 63 2d 3e 73 63 5f 69 | 6c 65 6e 20 3d 20 30 3b |sc->sc_i|len = 0;|
|00005760| 0a 09 73 63 2d 3e 73 63 | 5f 69 66 2e 69 66 5f 69 |..sc->sc|_if.if_i|
|00005770| 70 61 63 6b 65 74 73 2b | 2b 3b 0a 09 70 68 20 3d |packets+|+;..ph =|
|00005780| 20 6d 74 6f 64 28 6d 2c | 20 73 74 72 75 63 74 20 | mtod(m,| struct |
|00005790| 70 70 70 5f 68 65 61 64 | 65 72 20 2a 29 3b 0a 09 |ppp_head|er *);..|
|000057a0| 73 77 69 74 63 68 20 28 | 6e 74 6f 68 73 28 70 68 |switch (|ntohs(ph|
|000057b0| 2d 3e 70 68 5f 70 72 6f | 74 6f 63 6f 6c 29 29 20 |->ph_pro|tocol)) |
|000057c0| 7b 0a 23 69 66 64 65 66 | 20 49 4e 45 54 0a 09 20 |{.#ifdef| INET.. |
|000057d0| 20 63 61 73 65 20 50 50 | 50 5f 49 50 3a 0a 09 20 | case PP|P_IP:.. |
|000057e0| 20 20 20 73 63 68 65 64 | 6e 65 74 69 73 72 28 4e |   sched|netisr(N|
|000057f0| 45 54 49 53 52 5f 49 50 | 29 3b 0a 09 20 20 20 20 |ETISR_IP|);..    |
|00005800| 69 6e 71 20 3d 20 26 69 | 70 69 6e 74 72 71 3b 0a |inq = &i|pintrq;.|
|00005810| 09 20 20 20 20 6d 2d 3e | 6d 5f 70 6b 74 68 64 72 |.    m->|m_pkthdr|
|00005820| 2e 6c 65 6e 20 2d 3d 20 | 73 69 7a 65 6f 66 20 28 |.len -= |sizeof (|
|00005830| 73 74 72 75 63 74 20 70 | 70 70 5f 68 65 61 64 65 |struct p|pp_heade|
|00005840| 72 29 3b 0a 0a 09 20 20 | 20 20 6d 2d 3e 6d 5f 64 |r);...  |  m->m_d|
|00005850| 61 74 61 20 2b 3d 20 73 | 69 7a 65 6f 66 20 28 73 |ata += s|izeof (s|
|00005860| 74 72 75 63 74 20 70 70 | 70 5f 68 65 61 64 65 72 |truct pp|p_header|
|00005870| 29 3b 0a 09 20 20 20 20 | 6d 2d 3e 6d 5f 6c 65 6e |);..    |m->m_len|
|00005880| 20 2d 3d 20 73 69 7a 65 | 6f 66 20 28 73 74 72 75 | -= size|of (stru|
|00005890| 63 74 20 70 70 70 5f 68 | 65 61 64 65 72 29 3b 0a |ct ppp_h|eader);.|
|000058a0| 09 20 20 20 20 62 72 65 | 61 6b 3b 0a 23 69 66 64 |.    bre|ak;.#ifd|
|000058b0| 65 66 20 56 4a 43 0a 09 | 20 20 63 61 73 65 20 50 |ef VJC..|  case P|
|000058c0| 50 50 5f 56 4a 43 5f 43 | 4f 4d 50 3a 0a 09 20 20 |PP_VJC_C|OMP:..  |
|000058d0| 20 20 69 66 20 28 73 63 | 2d 3e 73 63 5f 66 6c 61 |  if (sc|->sc_fla|
|000058e0| 67 73 20 26 20 53 43 5f | 43 4f 4d 50 5f 54 43 50 |gs & SC_|COMP_TCP|
|000058f0| 29 20 7b 0a 09 09 69 6e | 74 20 78 6c 65 6e 3b 0a |) {...in|t xlen;.|
|00005900| 0a 09 09 6d 2d 3e 6d 5f | 64 61 74 61 20 2b 3d 20 |...m->m_|data += |
|00005910| 73 69 7a 65 6f 66 20 28 | 73 74 72 75 63 74 20 70 |sizeof (|struct p|
|00005920| 70 70 5f 68 65 61 64 65 | 72 29 3b 0a 09 09 6d 2d |pp_heade|r);...m-|
|00005930| 3e 6d 5f 6c 65 6e 20 2d | 3d 20 73 69 7a 65 6f 66 |>m_len -|= sizeof|
|00005940| 20 28 73 74 72 75 63 74 | 20 70 70 70 5f 68 65 61 | (struct| ppp_hea|
|00005950| 64 65 72 29 3b 0a 0a 09 | 09 2f 2a 20 67 6c 75 67 |der);...|./* glug|
|00005960| 2e 20 74 68 69 73 20 63 | 6f 64 65 20 61 73 73 75 |. this c|ode assu|
|00005970| 6d 65 73 20 70 6b 74 20 | 69 73 20 69 6e 20 61 20 |mes pkt |is in a |
|00005980| 73 69 6e 67 6c 65 20 6d | 62 75 66 20 2a 2f 0a 09 |single m|buf */..|
|00005990| 09 78 6c 65 6e 20 3d 20 | 28 6d 2d 3e 6d 5f 70 6b |.xlen = |(m->m_pk|
|000059a0| 74 68 64 72 2e 6c 65 6e | 20 2d 3d 20 73 69 7a 65 |thdr.len| -= size|
|000059b0| 6f 66 28 73 74 72 75 63 | 74 20 70 70 70 5f 68 65 |of(struc|t ppp_he|
|000059c0| 61 64 65 72 29 29 3b 0a | 0a 09 09 78 6c 65 6e 20 |ader));.|...xlen |
|000059d0| 3d 20 73 6c 5f 75 6e 63 | 6f 6d 70 72 65 73 73 5f |= sl_unc|ompress_|
|000059e0| 74 63 70 28 26 6d 2d 3e | 6d 5f 64 61 74 61 2c 20 |tcp(&m->|m_data, |
|000059f0| 78 6c 65 6e 2c 20 54 59 | 50 45 5f 43 4f 4d 50 52 |xlen, TY|PE_COMPR|
|00005a00| 45 53 53 45 44 5f 54 43 | 50 2c 0a 09 09 09 09 09 |ESSED_TC|P,......|
|00005a10| 20 26 73 63 2d 3e 73 63 | 5f 63 6f 6d 70 29 3b 0a | &sc->sc|_comp);.|
|00005a20| 0a 09 09 69 66 20 28 21 | 78 6c 65 6e 29 20 7b 0a |...if (!|xlen) {.|
|00005a30| 09 09 20 20 20 20 70 72 | 69 6e 74 66 28 22 70 70 |..    pr|intf("pp|
|00005a40| 70 25 64 3a 20 73 6c 5f | 75 6e 63 6f 6d 70 72 65 |p%d: sl_|uncompre|
|00005a50| 73 73 20 66 61 69 6c 65 | 64 20 6f 6e 20 74 79 70 |ss faile|d on typ|
|00005a60| 65 20 63 6f 6d 70 72 65 | 73 73 65 64 22 2c 0a 09 |e compre|ssed",..|
|00005a70| 09 09 20 20 20 73 63 2d | 3e 73 63 5f 69 66 2e 69 |..   sc-|>sc_if.i|
|00005a80| 66 5f 75 6e 69 74 29 3b | 0a 09 09 20 20 20 20 67 |f_unit);|...    g|
|00005a90| 6f 74 6f 20 72 65 6a 65 | 63 74 3b 0a 09 09 7d 0a |oto reje|ct;...}.|
|00005aa0| 0a 09 09 2f 2a 20 61 64 | 6a 75 73 74 20 74 68 65 |.../* ad|just the|
|00005ab0| 20 66 69 72 73 74 20 6d | 62 75 66 20 62 79 20 74 | first m|buf by t|
|00005ac0| 68 65 20 64 65 63 6f 6d | 70 72 65 73 73 65 64 20 |he decom|pressed |
|00005ad0| 61 6d 74 20 2a 2f 0a 09 | 09 6d 2d 3e 6d 5f 6c 65 |amt */..|.m->m_le|
|00005ae0| 6e 20 2b 3d 20 78 6c 65 | 6e 20 2d 20 6d 2d 3e 6d |n += xle|n - m->m|
|00005af0| 5f 70 6b 74 68 64 72 2e | 6c 65 6e 3b 0a 09 09 6d |_pkthdr.|len;...m|
|00005b00| 2d 3e 6d 5f 70 6b 74 68 | 64 72 2e 6c 65 6e 20 3d |->m_pkth|dr.len =|
|00005b10| 20 78 6c 65 6e 3b 0a 0a | 09 09 69 66 20 28 70 70 | xlen;..|..if (pp|
|00005b20| 70 5f 61 73 79 6e 63 5f | 69 6e 5f 64 65 62 75 67 |p_async_|in_debug|
|00005b30| 29 20 7b 0a 09 09 20 20 | 20 20 70 72 69 6e 74 66 |) {...  |  printf|
|00005b40| 28 22 76 6a 63 6f 6d 70 | 5c 6e 22 29 3b 0a 09 09 |("vjcomp|\n");...|
|00005b50| 20 20 20 20 70 70 70 64 | 75 6d 70 6d 28 6d 29 3b |    pppd|umpm(m);|
|00005b60| 0a 09 09 7d 0a 0a 09 09 | 69 6e 71 20 3d 20 26 69 |...}....|inq = &i|
|00005b70| 70 69 6e 74 72 71 3b 0a | 09 09 73 63 68 65 64 6e |pintrq;.|..schedn|
|00005b80| 65 74 69 73 72 28 4e 45 | 54 49 53 52 5f 49 50 29 |etisr(NE|TISR_IP)|
|00005b90| 3b 0a 09 09 62 72 65 61 | 6b 3b 0a 09 20 20 20 20 |;...brea|k;..    |
|00005ba0| 7d 0a 0a 09 20 20 20 20 | 69 66 20 28 70 70 70 5f |}...    |if (ppp_|
|00005bb0| 64 65 62 75 67 29 0a 09 | 09 70 72 69 6e 74 66 28 |debug)..|.printf(|
|00005bc0| 22 70 70 70 3a 20 63 6f | 6d 70 20 70 6b 74 20 77 |"ppp: co|mp pkt w|
|00005bd0| 2f 6f 20 63 6f 6d 70 72 | 65 73 73 69 6f 6e 3b 20 |/o compr|ession; |
|00005be0| 66 6c 61 67 73 20 30 78 | 25 78 20 5c 6e 22 2c 0a |flags 0x|%x \n",.|
|00005bf0| 09 09 20 20 20 20 20 20 | 20 73 63 2d 3e 73 63 5f |..      | sc->sc_|
|00005c00| 66 6c 61 67 73 29 3b 0a | 09 20 20 20 20 67 6f 74 |flags);.|.    got|
|00005c10| 6f 20 72 65 6a 65 63 74 | 3b 0a 09 20 20 20 20 62 |o reject|;..    b|
|00005c20| 72 65 61 6b 3b 0a 0a 09 | 20 20 63 61 73 65 20 50 |reak;...|  case P|
|00005c30| 50 50 5f 56 4a 43 5f 55 | 4e 43 4f 4d 50 3a 0a 09 |PP_VJC_U|NCOMP:..|
|00005c40| 20 20 20 20 69 66 28 73 | 63 2d 3e 73 63 5f 66 6c |    if(s|c->sc_fl|
|00005c50| 61 67 73 20 26 20 53 43 | 5f 43 4f 4d 50 5f 54 43 |ags & SC|_COMP_TC|
|00005c60| 50 29 20 7b 0a 09 09 6d | 2d 3e 6d 5f 70 6b 74 68 |P) {...m|->m_pkth|
|00005c70| 64 72 2e 6c 65 6e 20 2d | 3d 20 73 69 7a 65 6f 66 |dr.len -|= sizeof|
|00005c80| 20 28 73 74 72 75 63 74 | 20 70 70 70 5f 68 65 61 | (struct| ppp_hea|
|00005c90| 64 65 72 29 3b 0a 0a 09 | 09 6d 2d 3e 6d 5f 64 61 |der);...|.m->m_da|
|00005ca0| 74 61 20 2b 3d 20 73 69 | 7a 65 6f 66 20 28 73 74 |ta += si|zeof (st|
|00005cb0| 72 75 63 74 20 70 70 70 | 5f 68 65 61 64 65 72 29 |ruct ppp|_header)|
|00005cc0| 3b 0a 09 09 6d 2d 3e 6d | 5f 6c 65 6e 20 2d 3d 20 |;...m->m|_len -= |
|00005cd0| 73 69 7a 65 6f 66 20 28 | 73 74 72 75 63 74 20 70 |sizeof (|struct p|
|00005ce0| 70 70 5f 68 65 61 64 65 | 72 29 3b 0a 0a 09 09 2f |pp_heade|r);..../|
|00005cf0| 2a 20 67 6c 75 67 2e 20 | 74 68 69 73 20 63 6f 64 |* glug. |this cod|
|00005d00| 65 20 61 73 73 75 6d 65 | 73 20 69 74 20 63 61 6e |e assume|s it can|
|00005d10| 20 62 75 69 6c 64 20 61 | 20 74 63 70 20 68 64 72 | build a| tcp hdr|
|00005d20| 20 69 6e 20 0a 09 09 20 | 2a 20 66 72 6f 6e 74 20 | in ... |* front |
|00005d30| 6f 66 20 74 68 65 20 63 | 75 72 72 65 6e 74 20 6d |of the c|urrent m|
|00005d40| 62 75 66 0a 09 09 20 2a | 2f 0a 09 09 69 66 28 21 |buf... *|/...if(!|
|00005d50| 73 6c 5f 75 6e 63 6f 6d | 70 72 65 73 73 5f 74 63 |sl_uncom|press_tc|
|00005d60| 70 28 26 6d 2d 3e 6d 5f | 64 61 74 61 2c 20 31 2c |p(&m->m_|data, 1,|
|00005d70| 20 54 59 50 45 5f 55 4e | 43 4f 4d 50 52 45 53 53 | TYPE_UN|COMPRESS|
|00005d80| 45 44 5f 54 43 50 2c 0a | 09 09 09 09 20 20 20 20 |ED_TCP,.|....    |
|00005d90| 20 20 26 73 63 2d 3e 73 | 63 5f 63 6f 6d 70 29 29 |  &sc->s|c_comp))|
|00005da0| 0a 09 09 7b 0a 09 09 20 | 20 20 20 70 72 69 6e 74 |...{... |   print|
|00005db0| 66 28 22 70 70 70 25 64 | 3a 20 73 6c 5f 75 6e 63 |f("ppp%d|: sl_unc|
|00005dc0| 6f 6d 70 72 65 73 73 20 | 66 61 69 6c 65 64 20 6f |ompress |failed o|
|00005dd0| 6e 20 74 79 70 65 20 55 | 6e 63 6f 6d 70 72 65 73 |n type U|ncompres|
|00005de0| 65 64 5c 6e 22 2c 0a 09 | 09 09 20 20 20 73 63 2d |ed\n",..|..   sc-|
|00005df0| 3e 73 63 5f 69 66 2e 69 | 66 5f 75 6e 69 74 29 3b |>sc_if.i|f_unit);|
|00005e00| 0a 09 09 20 20 20 20 67 | 6f 74 6f 20 72 65 6a 65 |...    g|oto reje|
|00005e10| 63 74 3b 0a 09 09 7d 0a | 0a 09 09 69 66 20 28 70 |ct;...}.|...if (p|
|00005e20| 70 70 5f 61 73 79 6e 63 | 5f 69 6e 5f 64 65 62 75 |pp_async|_in_debu|
|00005e30| 67 29 20 7b 0a 09 09 20 | 20 20 20 70 72 69 6e 74 |g) {... |   print|
|00005e40| 66 28 22 76 6a 75 6e 63 | 6f 6d 70 5c 6e 22 29 3b |f("vjunc|omp\n");|
|00005e50| 0a 09 09 20 20 20 20 70 | 70 70 64 75 6d 70 6d 28 |...    p|ppdumpm(|
|00005e60| 6d 29 3b 0a 09 09 7d 0a | 0a 09 09 69 6e 71 20 3d |m);...}.|...inq =|
|00005e70| 20 26 69 70 69 6e 74 72 | 71 3b 0a 09 09 73 63 68 | &ipintr|q;...sch|
|00005e80| 65 64 6e 65 74 69 73 72 | 28 4e 45 54 49 53 52 5f |ednetisr|(NETISR_|
|00005e90| 49 50 29 3b 0a 09 09 62 | 72 65 61 6b 3b 0a 09 20 |IP);...b|reak;.. |
|00005ea0| 20 20 20 7d 0a 0a 09 20 | 20 20 20 69 66 20 28 70 |   }... |   if (p|
|00005eb0| 70 70 5f 64 65 62 75 67 | 29 0a 09 09 70 72 69 6e |pp_debug|)...prin|
|00005ec0| 74 66 28 22 70 70 70 3a | 20 75 6e 63 6f 6d 70 20 |tf("ppp:| uncomp |
|00005ed0| 70 6b 74 20 77 2f 6f 20 | 63 6f 6d 70 72 65 73 73 |pkt w/o |compress|
|00005ee0| 69 6f 6e 3b 20 66 6c 61 | 67 73 20 30 78 25 78 20 |ion; fla|gs 0x%x |
|00005ef0| 5c 6e 22 2c 0a 09 09 20 | 20 20 20 20 20 20 73 63 |\n",... |      sc|
|00005f00| 2d 3e 73 63 5f 66 6c 61 | 67 73 29 3b 0a 0a 09 20 |->sc_fla|gs);... |
|00005f10| 20 72 65 6a 65 63 74 3a | 3b 0a 09 20 20 20 20 69 | reject:|;..    i|
|00005f20| 66 20 28 70 70 70 5f 64 | 65 62 75 67 29 0a 09 09 |f (ppp_d|ebug)...|
|00005f30| 70 72 69 6e 74 66 28 22 | 70 70 70 3a 20 70 61 63 |printf("|ppp: pac|
|00005f40| 6b 65 74 20 72 65 6a 65 | 63 74 65 64 2c 20 70 72 |ket reje|cted, pr|
|00005f50| 6f 74 6f 63 6f 6c 20 30 | 78 25 78 5c 6e 22 2c 0a |otocol 0|x%x\n",.|
|00005f60| 09 09 20 20 20 20 20 20 | 20 6e 74 6f 68 73 28 70 |..      | ntohs(p|
|00005f70| 68 2d 3e 70 68 5f 70 72 | 6f 74 6f 63 6f 6c 29 29 |h->ph_pr|otocol))|
|00005f80| 3b 0a 09 20 20 20 20 73 | 63 2d 3e 73 63 5f 69 66 |;..    s|c->sc_if|
|00005f90| 2e 69 66 5f 69 65 72 72 | 6f 72 73 2b 2b 3b 0a 09 |.if_ierr|ors++;..|
|00005fa0| 20 20 20 20 6d 5f 66 72 | 65 65 6d 28 6d 29 3b 0a |    m_fr|eem(m);.|
|00005fb0| 09 20 20 20 20 72 65 74 | 75 72 6e 3b 09 09 09 09 |.    ret|urn;....|
|00005fc0| 0a 09 20 20 20 20 62 72 | 65 61 6b 3b 0a 23 65 6e |..    br|eak;.#en|
|00005fd0| 64 69 66 0a 23 65 6e 64 | 69 66 0a 09 20 20 64 65 |dif.#end|if..  de|
|00005fe0| 66 61 75 6c 74 3a 0a 09 | 20 20 20 20 2f 2a 20 74 |fault:..|    /* t|
|00005ff0| 68 69 73 20 69 73 20 62 | 75 67 75 73 3b 20 70 75 |his is b|ugus; pu|
|00006000| 74 20 63 68 61 72 20 69 | 6e 20 72 69 6e 67 20 62 |t char i|n ring b|
|00006010| 75 66 66 65 72 20 66 6f | 72 20 73 65 6c 65 63 74 |uffer fo|r select|
|00006020| 28 29 20 2a 2f 0a 09 20 | 20 20 20 70 75 74 63 28 |() */.. |   putc(|
|00006030| 30 2c 20 26 74 70 2d 3e | 74 5f 63 61 6e 29 3b 0a |0, &tp->|t_can);.|
|00006040| 0a 09 20 20 20 20 2f 2a | 20 75 6e 6b 6e 6f 77 6e |..    /*| unknown|
|00006050| 20 70 72 6f 74 6f 63 6f | 6c 20 2d 20 70 6c 61 63 | protoco|l - plac|
|00006060| 65 20 6f 6e 20 69 6e 70 | 75 74 20 71 75 65 20 66 |e on inp|ut que f|
|00006070| 6f 72 20 72 65 61 64 28 | 29 20 2a 2f 0a 09 20 20 |or read(|) */..  |
|00006080| 20 20 74 74 77 61 6b 65 | 75 70 28 74 70 29 3b 0a |  ttwake|up(tp);.|
|00006090| 09 20 20 20 20 69 6e 71 | 20 3d 20 26 73 63 2d 3e |.    inq| = &sc->|
|000060a0| 73 63 5f 69 6e 71 3b 0a | 09 7d 0a 09 73 20 3d 20 |sc_inq;.|.}..s = |
|000060b0| 73 70 6c 69 6d 70 28 29 | 3b 0a 09 69 66 20 28 49 |splimp()|;..if (I|
|000060c0| 46 5f 51 46 55 4c 4c 28 | 69 6e 71 29 29 20 7b 0a |F_QFULL(|inq)) {.|
|000060d0| 09 20 20 20 20 49 46 5f | 44 52 4f 50 28 69 6e 71 |.    IF_|DROP(inq|
|000060e0| 29 3b 0a 09 20 20 20 20 | 69 66 20 28 70 70 70 5f |);..    |if (ppp_|
|000060f0| 64 65 62 75 67 29 0a 09 | 09 70 72 69 6e 74 66 28 |debug)..|.printf(|
|00006100| 22 70 70 70 3a 20 71 75 | 65 20 66 75 6c 6c 5c 6e |"ppp: qu|e full\n|
|00006110| 22 29 3b 0a 09 20 20 20 | 20 73 63 2d 3e 73 63 5f |");..   | sc->sc_|
|00006120| 69 66 2e 69 66 5f 69 65 | 72 72 6f 72 73 2b 2b 3b |if.if_ie|rrors++;|
|00006130| 0a 09 20 20 20 20 73 63 | 2d 3e 73 63 5f 69 66 2e |..    sc|->sc_if.|
|00006140| 69 66 5f 69 71 64 72 6f | 70 73 2b 2b 3b 0a 09 20 |if_iqdro|ps++;.. |
|00006150| 20 20 20 6d 5f 66 72 65 | 65 6d 28 6d 29 3b 0a 09 |   m_fre|em(m);..|
|00006160| 7d 20 65 6c 73 65 0a 09 | 20 20 20 20 49 46 5f 45 |} else..|    IF_E|
|00006170| 4e 51 55 45 55 45 28 69 | 6e 71 2c 20 6d 29 3b 0a |NQUEUE(i|nq, m);.|
|00006180| 0a 09 73 70 6c 78 28 73 | 29 3b 0a 09 72 65 74 75 |..splx(s|);..retu|
|00006190| 72 6e 3b 0a 20 20 20 20 | 7d 0a 20 20 20 20 65 6c |rn;.    |}.    el|
|000061a0| 73 65 20 69 66 20 28 73 | 63 2d 3e 73 63 5f 66 6c |se if (s|c->sc_fl|
|000061b0| 61 67 73 20 26 20 53 43 | 5f 46 4c 55 53 48 29 0a |ags & SC|_FLUSH).|
|000061c0| 09 72 65 74 75 72 6e 3b | 0a 20 20 20 20 65 6c 73 |.return;|.    els|
|000061d0| 65 20 69 66 20 28 63 20 | 3d 3d 20 50 50 50 5f 45 |e if (c |== PPP_E|
|000061e0| 53 43 41 50 45 29 20 7b | 0a 09 73 63 2d 3e 73 63 |SCAPE) {|..sc->sc|
|000061f0| 5f 66 6c 61 67 73 20 7c | 3d 20 53 43 5f 45 53 43 |_flags ||= SC_ESC|
|00006200| 41 50 45 44 3b 0a 09 72 | 65 74 75 72 6e 3b 0a 20 |APED;..r|eturn;. |
|00006210| 20 20 20 7d 0a 0a 20 20 | 20 20 69 66 20 28 73 63 |   }..  |  if (sc|
|00006220| 2d 3e 73 63 5f 66 6c 61 | 67 73 20 26 20 53 43 5f |->sc_fla|gs & SC_|
|00006230| 45 53 43 41 50 45 44 29 | 20 7b 0a 09 73 63 2d 3e |ESCAPED)| {..sc->|
|00006240| 73 63 5f 66 6c 61 67 73 | 20 26 3d 20 7e 53 43 5f |sc_flags| &= ~SC_|
|00006250| 45 53 43 41 50 45 44 3b | 0a 09 63 20 5e 3d 20 50 |ESCAPED;|..c ^= P|
|00006260| 50 50 5f 54 52 41 4e 53 | 3b 0a 20 20 20 20 7d 0a |PP_TRANS|;.    }.|
|00006270| 0a 20 20 20 20 2f 2a 0a | 20 20 20 20 20 2a 20 49 |.    /*.|     * I|
|00006280| 6e 69 74 69 61 6c 69 7a | 65 20 62 75 66 66 65 72 |nitializ|e buffer|
|00006290| 20 6f 6e 20 66 69 72 73 | 74 20 6f 63 74 65 74 20 | on firs|t octet |
|000062a0| 72 65 63 65 69 76 65 64 | 2e 0a 20 20 20 20 20 2a |received|..     *|
|000062b0| 20 46 69 72 73 74 20 6f | 63 74 65 74 20 63 6f 75 | First o|ctet cou|
|000062c0| 6c 64 20 62 65 20 61 64 | 64 72 65 73 73 20 6f 72 |ld be ad|dress or|
|000062d0| 20 70 72 6f 74 6f 63 6f | 6c 20 28 77 68 65 6e 20 | protoco|l (when |
|000062e0| 63 6f 6d 70 72 65 73 73 | 69 6e 67 0a 20 20 20 20 |compress|ing.    |
|000062f0| 20 2a 20 61 64 64 72 65 | 73 73 2f 63 6f 6e 74 72 | * addre|ss/contr|
|00006300| 6f 6c 29 2e 0a 20 20 20 | 20 20 2a 20 53 65 63 6f |ol)..   |  * Seco|
|00006310| 6e 64 20 6f 63 74 65 74 | 20 69 73 20 63 6f 6e 74 |nd octet| is cont|
|00006320| 72 6f 6c 2e 0a 20 20 20 | 20 20 2a 20 54 68 69 72 |rol..   |  * Thir|
|00006330| 64 20 6f 63 74 65 74 20 | 69 73 20 66 69 72 73 74 |d octet |is first|
|00006340| 20 6f 72 20 73 65 63 6f | 6e 64 20 28 77 68 65 6e | or seco|nd (when|
|00006350| 20 63 6f 6d 70 72 65 73 | 73 69 6e 67 20 70 72 6f | compres|sing pro|
|00006360| 74 6f 63 6f 6c 29 0a 20 | 20 20 20 20 2a 20 6f 63 |tocol). |    * oc|
|00006370| 74 65 74 20 6f 66 20 70 | 72 6f 74 6f 63 6f 6c 2e |tet of p|rotocol.|
|00006380| 0a 20 20 20 20 20 2a 20 | 46 6f 75 72 74 68 20 6f |.     * |Fourth o|
|00006390| 63 74 65 74 20 69 73 20 | 73 65 63 6f 6e 64 20 6f |ctet is |second o|
|000063a0| 63 74 65 74 20 6f 66 20 | 70 72 6f 74 6f 63 6f 6c |ctet of |protocol|
|000063b0| 2e 0a 20 20 20 20 20 2a | 2f 0a 20 20 20 20 69 66 |..     *|/.    if|
|000063c0| 20 28 73 63 2d 3e 73 63 | 5f 69 6c 65 6e 20 3d 3d | (sc->sc|_ilen ==|
|000063d0| 20 30 29 20 7b 0a 09 73 | 63 2d 3e 73 63 5f 6d 63 | 0) {..s|c->sc_mc|
|000063e0| 20 3d 20 73 63 2d 3e 73 | 63 5f 6d 3b 0a 09 73 63 | = sc->s|c_m;..sc|
|000063f0| 2d 3e 73 63 5f 6d 70 20 | 3d 20 6d 74 6f 64 28 73 |->sc_mp |= mtod(s|
+--------+-------------------------+-------------------------+--------+--------+