Date: Sun, 23 Sep 2001 16:59:21 -0800 From: "Lars Eggert" <larse@ISI.EDU> To: "Michael Collette" <metrol@earthlink.net>, "Warner Losh" <imp@harmony.village.org> Cc: "FreeBSD" <freebsd-mobile@FreeBSD.ORG> Subject: RE: Same old pccard probs Message-ID: <PCELJJEJJMODEMKEBLLBIEDGCAAA.larse@isi.edu> In-Reply-To: <20010923232520.1DEF737B438@hub.freebsd.org>
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This is a multi-part message in MIME format. ------=_NextPart_000_0035_01C14451.17373BA0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sorry, couldn't find this in the thread - is this a Linksys card? If so, this patch might help: [This is from a -stable email from 11/30/00 titled "Re: Linksys PCMPC100 problem"] Another piece to the puzzle of bad network performance of the Linksys cards is that they're only supported as generic NE2000 cards with 8K of memory by the ed driver. 1.5K are used for the send buffer, 6.5K remain for the receive buffer. This is a shortcoming of the ed driver, since the Linksys cards have 32K of memory. If a sender sends large packets to a Linksys cards (NFS over UDP), the IP fragments arrive too fast and overrun the buffer. The last fragment(s) are lost and the wohle packet is dropped. The patch below fixes a small bug in the ed driver that causes only 8K instead of 16K (as normal for 16bit cards) to be used. However, full support for the Linksys cards should really be added to the ed driver. The code in http://www.FreeBSD.org/cgi/query-pr.cgi?pr=12088 looks promising, but doesn't apply cleanly due to bitrot. Index: if_ed.c =================================================================== RCS file: /home/larse/CVSROOT/RELENG_4/sys/dev/ed/if_ed.c,v retrieving revision 1.1.1.1 diff -u -r1.1.1.1 if_ed.c --- if_ed.c 2000/10/25 01:15:38 1.1.1.1 +++ if_ed.c 2000/11/30 22:16:13 @@ -1046,6 +1046,18 @@ } + /* + * Hack: + * Reprobe Linksys. This sets sc->isa16bit, which causes 16K + * of the card memory to be used instead of only 8K. However, + * the Linksys cards (at least my PCMPC100) have 32K memory. + * This driver should really be changed to fully support the + * Linksys cards. The patch in + * http://www.FreeBSD.org/cgi/query-pr.cgi?pr=12088 looks + * promising, but doesn't apply cleanly due to bitrot. + */ + ed_get_Linksys(sc); + /* 8k of memory plus an additional 8k if 16bit */ memsize = 8192 + sc->isa16bit * 8192; @@ -1690,6 +1702,13 @@ printf("%s\n", (((sc->vendor == ED_VENDOR_3COM) || (sc->vendor == ED_VENDOR_HP)) && (ifp->if_flags & IFF_ALTPHYS)) ? " tranceiver disabled" : ""); +#if ED_DEBUG + printf("%s%d: %u/%u/%u bytes tx/rx/total card memory\n", + ifp->if_name, ifp->if_unit, + sc->txb_cnt * ED_PAGE_SIZE * ED_TXBUF_SIZE, + (sc->rec_page_stop - sc->rec_page_start) * ED_PAGE_SIZE, + sc->mem_size); +#endif return (0); } -- Lars Eggert <larse@isi.edu> Information Sciences Institute http://www.isi.edu/larse/ University of Southern California ------=_NextPart_000_0035_01C14451.17373BA0 Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIF5jCCArUw ggIeoAMCAQICAwWBRzANBgkqhkiG9w0BAQIFADCBkjELMAkGA1UEBhMCWkExFTATBgNVBAgTDFdl c3Rlcm4gQ2FwZTESMBAGA1UEBxMJQ2FwZSBUb3duMQ8wDQYDVQQKEwZUaGF3dGUxHTAbBgNVBAsT FENlcnRpZmljYXRlIFNlcnZpY2VzMSgwJgYDVQQDEx9QZXJzb25hbCBGcmVlbWFpbCBSU0EgMjAw MC44LjMwMB4XDTAxMDgyNDE2NDAwMFoXDTAyMDgyNDE2NDAwMFowVDEPMA0GA1UEBBMGRWdnZXJ0 MQ0wCwYDVQQqEwRMYXJzMRQwEgYDVQQDEwtMYXJzIEVnZ2VydDEcMBoGCSqGSIb3DQEJARYNbGFy c2VAaXNpLmVkdTCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEA0AvLBsD78nxcUHeHkaMgl3b4 qYPnfgbf8Lh+HQP8RgGMRG/Yb+vTpkGezlwt9pkJxiD11uZDy4CNNJUu3gKxKSb+zRV70O+lkwwf tuHoLHoH4xwo3LcQ2LGDpd+I95tUN4dfJ3TmeEcUSF50dC/SuUI4w8AlhXQ8IxrhgdayTpECAwEA AaNWMFQwKgYFK2UBBAEEITAfAgEAMBowGAIBBAQTTDJ1TXlmZkJOVWJOSkpjZFoyczAYBgNVHREE ETAPgQ1sYXJzZUBpc2kuZWR1MAwGA1UdEwEB/wQCMAAwDQYJKoZIhvcNAQECBQADgYEAheZhn0pQ A8zI7U2K1ZIAl11j0a1DKxnp3GtTvOUrGRB3WvYxidvdZ1kizhEsWeXU81TkNDH0DaRqtOEeu6Q2 OhB+jeKEqY7IDAJE4/fI0e+d6PnG1hd+vEvYmsKHkmzBhPc94XUOKNWO+qVNP2NGyNI3QIDy5wX4 fdcOo1S34r4wggMpMIICkqADAgECAgEMMA0GCSqGSIb3DQEBBAUAMIHRMQswCQYDVQQGEwJaQTEV MBMGA1UECBMMV2VzdGVybiBDYXBlMRIwEAYDVQQHEwlDYXBlIFRvd24xGjAYBgNVBAoTEVRoYXd0 ZSBDb25zdWx0aW5nMSgwJgYDVQQLEx9DZXJ0aWZpY2F0aW9uIFNlcnZpY2VzIERpdmlzaW9uMSQw IgYDVQQDExtUaGF3dGUgUGVyc29uYWwgRnJlZW1haWwgQ0ExKzApBgkqhkiG9w0BCQEWHHBlcnNv bmFsLWZyZWVtYWlsQHRoYXd0ZS5jb20wHhcNMDAwODMwMDAwMDAwWhcNMDIwODI5MjM1OTU5WjCB kjELMAkGA1UEBhMCWkExFTATBgNVBAgTDFdlc3Rlcm4gQ2FwZTESMBAGA1UEBxMJQ2FwZSBUb3du MQ8wDQYDVQQKEwZUaGF3dGUxHTAbBgNVBAsTFENlcnRpZmljYXRlIFNlcnZpY2VzMSgwJgYDVQQD Ex9QZXJzb25hbCBGcmVlbWFpbCBSU0EgMjAwMC44LjMwMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCB iQKBgQDeMzKmY8cJJUU+0m54J2eBxdqIGYKXDuNEKYpjNSptcDz63K737nRvMLwzkH/5NHGgo22Y 8cNPomXbDfpL8dbdYaX5hc1VmjUanZJ1qCeu2HL5ugL217CR3hzpq+AYA6h8Q0JQUYeDPPA5tJtU ihOH/7ObnUlmAC0JieyUa+mhaQIDAQABo04wTDApBgNVHREEIjAgpB4wHDEaMBgGA1UEAxMRUHJp dmF0ZUxhYmVsMS0yOTcwEgYDVR0TAQH/BAgwBgEB/wIBADALBgNVHQ8EBAMCAQYwDQYJKoZIhvcN AQEEBQADgYEAcxtvJmWL/xU0S1liiu1EvknH6A27j7kNaiYqYoQfuIdjdBxtt88aU5FL4c3mONnt UPQ6bDSSrOaSnG7BIwHCCafvS65y3QZn9VBvLli4tgvBUFe17BzX7xe21Yibt6KIGu05Wzl9NPy2 lhglTWr0ncXDkS+plrgFPFL83eliA0gxggKqMIICpgIBATCBmjCBkjELMAkGA1UEBhMCWkExFTAT BgNVBAgTDFdlc3Rlcm4gQ2FwZTESMBAGA1UEBxMJQ2FwZSBUb3duMQ8wDQYDVQQKEwZUaGF3dGUx HTAbBgNVBAsTFENlcnRpZmljYXRlIFNlcnZpY2VzMSgwJgYDVQQDEx9QZXJzb25hbCBGcmVlbWFp bCBSU0EgMjAwMC44LjMwAgMFgUcwCQYFKw4DAhoFAKCCAWUwGAYJKoZIhvcNAQkDMQsGCSqGSIb3 DQEHATAcBgkqhkiG9w0BCQUxDxcNMDEwOTI0MDA1OTIxWjAjBgkqhkiG9w0BCQQxFgQUZ9pzerq/ k/9TfDTMQgdLGZe2ECcwWAYJKoZIhvcNAQkPMUswSTAKBggqhkiG9w0DBzAOBggqhkiG9w0DAgIC AIAwBwYFKw4DAgcwDQYIKoZIhvcNAwICASgwBwYFKw4DAhowCgYIKoZIhvcNAgUwgasGCSsGAQQB gjcQBDGBnTCBmjCBkjELMAkGA1UEBhMCWkExFTATBgNVBAgTDFdlc3Rlcm4gQ2FwZTESMBAGA1UE BxMJQ2FwZSBUb3duMQ8wDQYDVQQKEwZUaGF3dGUxHTAbBgNVBAsTFENlcnRpZmljYXRlIFNlcnZp Y2VzMSgwJgYDVQQDEx9QZXJzb25hbCBGcmVlbWFpbCBSU0EgMjAwMC44LjMwAgMFgUcwDQYJKoZI hvcNAQEBBQAEgYCZLLSVlRWQ5KyC3F0yyW9TeIUOpbsCc2Cw8kR/v5FttuTmQIy1ae7oe+k/lXSO R1IGOMjkk1HfMXdZIWmYGynxeAQSfB23cI0LG1ebjFCNSIG/RF9yqCVHCvcjm941KwJtE/OPmjVq OVZgBQbbPhy0xt1d16MEPZ7huE55W4JIWAAAAAAAAA== ------=_NextPart_000_0035_01C14451.17373BA0-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message
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