我需要創建一個以太網數據包并在我的內核模塊中發送它.有人可以幫我這樣做嗎？

我想我需要使用dev_alloc_skb創建一個skb,然后我需要編寫mac_ethernet,插入數據并使用dev_queu_xmit發送它.

但我不確定這是否有效,或者它是否是正確和最簡單的方法.

最好的祝福

EDIT1：

int sendpacket ()

{

unsigned char dest[ETH_ALEN]={0x00,0x25,0x22,0x05,0xF3,0xF0};

unsigned char src[ETH_ALEN] = {0x90,0xE6,0xBA,0x48,0x7C,0x87};

struct sk_buff * skbt =alloc_skb(ETH_FRAME_LEN,GFP_KERNEL);

//skb_reserve(skb,ETH_FRAME_LEN);

dev_hard_header(skbt,dev_eth1,ETH_P_802_3,dest,src,dev_eth1->addr_len);

if(dev_queue_xmit(skbt)!=NET_XMIT_SUCCESS)

{

printk("Not send!!\n");

}

kfree_skb(skbt);

return 0;

}

> Dmesg command:

>

> 677.826933] Hello:I'm the hook module!!!! [ 677.826937] 2!!!! [ 677.826941] skb_under_panic: text:c0723608 len:14 put:14 head:f1843800 data:f18437f2 tail:0xf1843800 end:0xf1843e00 dev: [ 677.826959]

> ------------[ cut here ]------------ [ 677.826961] kernel BUG at net/core/skbuff.c:146! [ 677.826964] invalid opcode: 0000 [#1] SMP [

> 677.826967] last sysfs file: /sys/devices/system/cpu/cpu1/cache/index2/shared_cpu_map [

> 677.826969] Modules linked in: sendpacket(+) bluetooth rfkill vfat fat fuse sunrpc cpufreq_ondemand acpi_cpufreq mperf ip6t_REJECT

> nf_conntrack_ipv6 ip6table_filter ip6_tables ipv6 uinput

> snd_hda_codec_atihdmi snd_hda_codec_realtek snd_hda_intel

> snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd

> soundcore atl1e snd_page_alloc iTCO_wdt iTCO_vendor_support r8169 mii

> i2c_i801 microcode asus_atk0110 pcspkr ata_generic pata_acpi

> usb_storage pata_marvell radeon ttm drm_kms_helper drm i2c_algo_bit

> i2c_core [last unloaded: sendpacket] [ 677.827003] [ 677.827003]

> Pid: 4780, comm: insmod Tainted: G W 2.6.35101 #7 P5QL

> PRO/P5QL PRO [ 677.827003] EIP: 0060:[] EFLAGS: 00210246

> CPU: 0 [ 677.827003] EIP is at skb_push+0x57/0x62 [ 677.827003] EAX:

> 00000088 EBX: c08f9fdc ECX: f156bf10 EDX: c093b4ca [ 677.827003] ESI:

> 00000000 EDI: f51ca000 EBP: f156bf38 ESP: f156bf0c [ 677.827003] DS:

> 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 [ 677.827003] Process insmod

> (pid: 4780, ti=f156a000 task=f2b071a0 task.ti=f156a000) [ 677.827003]

> Stack: [ 677.827003] c093b4ca c0723608 0000000e 0000000e f1843800

> f18437f2 f1843800 f1843e00 [ 677.827003] <0> c08f9fdc f156bf64

> f156bf6a f156bf50 c0723608 00000001 c07235e5 f3b6c000 [ 677.827003]

> <0> 00835ff4 f156bf78 f7d640a8 f156bf6a f156bf64 00000006 48bae690

> 2500877c [ 677.827003] Call Trace: [ 677.827003] [] ?

> eth_header+0x23/0x93 [ 677.827003] [] ?

> eth_header+0x23/0x93 [ 677.827003] [] ?

> eth_header+0x0/0x93 [ 677.827003] [] ?

> sendpacket+0x8f/0xb6 [sendpacket] [ 677.827003] [] ?

> hook_init+0x0/0x46 [sendpacket] [ 677.827003] [] ?

> hook_init+0x44/0x46 [sendpacket] [ 677.827003] [] ?

> do_one_initcall+0x4f/0x139 [ 677.827003] [] ?

> blocking_notifier_call_chain+0x11/0x13 [ 677.827003] [] ?

> sys_init_module+0x7f/0x19b [ 677.827003] [] ?

> sysenter_do_call+0x12/0x28 [ 677.827003] Code: c0 85 f6 0f 45 de 53

> ff b0 a8 00 00 00 ff b0 a4 00 00 00 51 ff b0 ac 00 00 00 52 ff 70 50

> ff 75 04 68 ca b4 93 c0 e8 ad 4a 09 00 <0f> 0b 8d 65 f8 89 c8 5b 5e 5d

> c3 55 89 e5 56 53 0f 1f 44 00 00 [ 677.827116] EIP: []

> skb_push+0x57/0x62 SS:ESP 0068:f156bf0c [ 677.827154] ---[ end trace

> dee1e3278503a581 ]---

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