在Linux2.6.16上使用EV-DO USB网卡实现3G无线上网(转)
主处理器：SEP4020（东南大学自主设计SOC，基于ARM720T内核）开发板：UB4020EVB(1.5)
操作系统：Linux2.6.16
文件系统：BusyBox
无线网卡：中兴通讯（ZTE）3G网卡 AC580，EVDO
编译内核时，主要有几点要求
1、对ppp的支持
2、对usb serial的支持
3、对scsi cdrom 的支持
4、对usb host的支持
下面就是具体操作的流程
好吧，下面是流程
/ # ls /dev
buttons mtd0ro nbd5 ram3 tty17 tty37 tty57
cmx865 mtd1 nbd6 ram4 tty18 tty38 tty58
console mtd1ro nbd7 ram5 tty19 tty39 tty59
full mtd2 nbd8 ram6 tty2 tty4 tty6
fuse mtd2ro nbd9 ram7 tty20 tty40 tty60
graylcd mtd3 null ram8 tty21 tty41 tty61
ic mtd3ro port ram9 tty22 tty42 tty62
kmem mtdblock0ppp random tty23 tty43 tty63
kmsg mtdblock1printer rtc tty24 tty44 tty7
led mtdblock2psam sda tty25 tty45 tty8
loop0 mtdblock3psaux sg0 tty26 tty46 tty9
loop1 nbd0 pts tp tty27 tty47 ttyS0
loop2 nbd1 ptyp5 tty tty28 tty48 ttyS1
loop3 nbd10 ram0 tty0 tty29 tty49 ttyS2
loop4 nbd11 ram1 tty1 tty3 tty5 ttyS3
loop5 nbd12 ram10 tty10 tty30 tty50 ttyp5
loop6 nbd13 ram11 tty11 tty31 tty51 uba
loop7 nbd14 ram12 tty12 tty32 tty52 urandom
mem nbd15 ram13 tty13 tty33 tty53 usbdev1.1
mg_card nbd2 ram14 tty14 tty34 tty54 vcs
mice nbd3 ram15 tty15 tty35 tty55 vcsa
mtd0 nbd4 ram2 tty16 tty36 tty56 zero
/ # eject /dev/uba //用eject命令将uba弹出，然后无线网卡的其他设备才能出来
ub: reading capacity: error -5
ub: reading capacity: size 0
ub: reading capacity: error -5
ub: reading capacity: size 0
/ # usb 1-1: USB disconnect, address 2
usb 1-1: new full speed USB device using s1r72v17 and address 3
usb 1-1: Product: ZTE EVDO Technologies MSM
usb 1-1: Manufacturer: ZTE, Incorporated
usb 1-1: configuration #1 chosen from 1 choice
usbserial_generic 1-1:1.0: generic converter detected
usb 1-1: generic converter now attached to ttyUSB0
usbserial_generic 1-1:1.1: generic converter detected
usb 1-1: generic converter now attached to ttyUSB1
usbserial_generic 1-1:1.2: generic converter detected
usb 1-1: generic converter now attached to ttyUSB2
usbserial_generic 1-1:1.3: generic converter detected
usb 1-1: generic converter now attached to ttyUSB3
ub(1.3): GetMaxLUN returned 0, using 1 LUNs
ub: reading capacity: error -5
ub: reading capacity: size 0
ub: reading capacity: error -5
ub: reading capacity: size 0
ub(1.3): GetMaxLUN returned 0, using 1 LUNs
/ # mdev -s //主要是多了ttyUSBx 这几个设备节点，当然，必须要有usbserial驱动的支持
/ # ls /dev
buttons mtd1 nbd7 ram6 tty20 tty41 tty62
cmx865 mtd1ro nbd8 ram7 tty21 tty42 tty63
console mtd2 nbd9 ram8 tty22 tty43 tty7
full mtd2ro null ram9 tty23 tty44 tty8
fuse mtd3 port random tty24 tty45 tty9
graylcd mtd3ro ppp rtc tty25 tty46 ttyS0
ic mtdblock0printer sda tty26 tty47 ttyS1
kmem mtdblock1psam sg0 tty27 tty48 ttyS2
kmsg mtdblock2psaux tp tty28 tty49 ttyS3
led mtdblock3pts tty tty29 tty5 ttyUSB0
loop0 nbd0 ptyp5 tty0 tty3 tty50 ttyUSB1
loop1 nbd1 ram0 tty1 tty30 tty51 ttyUSB2
loop2 nbd10 ram1 tty10 tty31 tty52 ttyUSB3
loop3 nbd11 ram10 tty11 tty32 tty53 ttyp5
loop4 nbd12 ram11 tty12 tty33 tty54 uba
loop5 nbd13 ram12 tty13 tty34 tty55 ubb
loop6 nbd14 ram13 tty14 tty35 tty56 urandom
loop7 nbd15 ram14 tty15 tty36 tty57 usbdev1.1
mem nbd2 ram15 tty16 tty37 tty58 usbdev1.3
mg_card nbd3 ram2 tty17 tty38 tty59 vcs
mice nbd4 ram3 tty18 tty39 tty6 vcsa
mtd0 nbd5 ram4 tty19 tty4 tty60 zero
mtd0ro nbd6 ram5 tty2 tty40 tty61
/ # pppd call cdma& //这一步是拨号
/ # Serial connection established.
using channel 1
Using interface ppp0
Connect: ppp0 <--> /dev/ttyUSB0
sent
rcvd
rcvd
sent
rcvd
sent
rcvd
CHAP authentication succeeded:
CHAP authentication succeeded
sent
sent
rcvd
sent
rcvd
sent
rcvd
sent
rcvd
sent
rcvd
sent
rcvd
not replacing existing default route via 192.168.0.1
localIP address 117.61.124.196
remote IP address 115.168.74.46
primary DNS address 61.177.7.1
secondary DNS address 218.2.135.1
rcvd
/ # route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
115.168.74.46 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 eth0
/ # route add default dev ppp0 //将ppp0设置为默认路由
/ # route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
115.168.74.46 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
0.0.0.0 0.0.0.0 0.0.0.0 U 0 0 0 ppp0
0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 eth0
/ # ping www.baidu.com //现在就能ping通baidu了，当然，必须再/etc/resolv.conf中添加dns
PING www.baidu.com (119.75.213.61): 56 data bytes
the tp time is 0xa851bd57,the triptime is 0x00013a62,the triptime2 is 0xa852f7b9,the triptime3 is 0xa851bd57
64 bytes from 119.75.213.61: seq=0 ttl=58 time=80.482 ms
the tp time is 0xa8612142,the triptime is 0x0001465c,the triptime2 is 0xa862679e,the triptime3 is 0xa8612142
64 bytes from 119.75.213.61: seq=1 ttl=58 time=83.548 ms
the tp time is 0xa8708a2c,the triptime is 0x000146f1,the triptime2 is 0xa871d11d,the triptime3 is 0xa8708a2c
64 bytes from 119.75.213.61: seq=2 ttl=58 time=83.697 ms
--- www.baidu.com ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max = 80.482/82.575/83.697 ms
网络连上之后，就能实现一系列应用，下面是在控制台上通过telnet登陆东南大学虎踞龙盘bbs
http://cache.amobbs.com/bbs_upload782111/files_22/ourdev_507109.jpg
(原文件名:3G.jpg)
http://cache.amobbs.com/bbs_upload782111/files_22/ourdev_507110.jpg
(原文件名:seu.jpg) 不错,参考一下.我也正在搞3G网卡 Å£ 不错不错
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