hi all,
i am implementing delay for the acknowledgement of 10th packet using timer_list timer.i am using kernel 2.6.11.1
initiallyi have declared the structure struct timer_list *my_timer to be global in the file tcp_output.c
i initialized the timer using init_timer in the function tcp_send_ack
the inititalization is
my_timer->expires = jiffies+10*HZ
my_timer->data=""> my_timer->function = &my_function
i defined my_function after the function tcp_send_ack
in this function i am calling tcp_transmit_skb(sk,skb) which was called in the tcp_send_ack
for the 10th pkt i use the delay!
now when i compile & boot i get the kernel panic with oops message as:
EFLAGS:00010296
EIP is at my_function + 0x36/0x60
eax:ddf1f880 ebx:00000000 ecx:00000002c edx:df7ef740 esi:00000200 edi:ddf1f880 ebp:c02fabb0 esp:c0428fa4 ds:007b es:007b ss:0068
process swapper (pid:0, threadinfo=c0428000 task=c037cba0)
stack: 00000200 00000200 c13f6a60 c012d7f9 de446104 de446000 c13f7fa0 c13fff80
c0428000 c0428fc8 c0428fc8 00000001 c03ddb88 c0421bc0 0000000a c0129262
00000000 c0428000 c03e6fa0 c04251a0 004da007 c010664b
call trace:
[<c012d7f9>]run_timer_softirq+0xe9/0x1c0
[<c0129262>]__do_doftirq+0x72/0xf0
[<c010664b>]do_softirq+0x5b/0x60
------------------------
------------------------
[<c0104be4>]apic_timer_interrupt+0x1c/0x24
[<c0102030>]default_idle+0x0/0x30
[<c0102056>]default_idle+0x26/0x30
[<c01020ee>]cpu_idle+0x4e/0x70
[<c03e79b5>]start_kernel+0x165/0x1d0
[<c03e7380>]unknown_bootoption+0x0/0x200
code: 74 24 04 89 7c 24 08 74 0c 8b 74 24 04 8b 7c 24 08 83 c4 0c c3 a1
48 63 38 c0 ba 20 00 00 00 e8 51 29 e5 ff b9 2c 00 00 00 89 c7 <f3> a5 89 c2 89 f0 e8 af cd ff ff a1 e8 1b 4b c0 8b 74 24 04 8b
<0> kernel pabnic=not syncing:Fatal exception in interrupt
where i am going wrong! pls help me on this !
could u pls tell me how to set the delay to 2millisecs.
void msleep(unsigned int millisecs)
