Sending IOCTL messages from driver

Hi!
I need to perform some actions such as getting default gateway's IP and ARP, setting both NIC drivers to promiscuous mode etc, before my driver comes to work. I know how to implement it in user mode, but my task is to do it from kernel space when my driver is in its attach procedure.
So, I decide to use Interface Low Level structure (ill_t) to obtain pointers to downstream queue functions. I build message in my attachment procedure:
struct sockaddr sa;
mblk_t * ioc_mb;
struct iocblk * ioc;
ioc_mb = allocb(sizeof(struct iocblk), BPRI_LO);
// filling ioctl fields
ioc->ioc_cmd = SIOCGETPEER;
ioc->ioc_cr = ddi_get_cred();
ioc->ioc_id = OUR_DRIVER_ID;
ioc->ioc_count = sizeof(struct sockaddr);
^^^^^^^^^^^^^^^^^^
argument for SIOCGETPEER ioctl
msg = (char *)ioc;
ioc_mb->b_datap->db_type = M_IOCTL;
for(i = 0; i < sizeof(ioc); i++)
*ioc_mb->b_rptr++ = msg;
ioc_mb->b_cont->b_datap->db_type = M_DATA;
ioc_mb->b_cont->b_rptr = (char *)&sa;
According to theory first message block has type M_IOCTL, consequent - M_DATA. I put pointer to argument (sa) to second block's 1st unread data byte of buffer. After that I send just builded message downstream with downstream's queue qi_putp(q, ioc_mb) procedure. The reply for it was M_IOCNAK. What is problem here?
Can somebody explain me what is wrong in my technique?
Thank you.

Hi Mark,
Thanks for your quick reply. I have checked idx5 and there is only one message/TID from the sending system.
The other ECC system is owned by a different department so I will ask them to run SM58 to see if anything is stuck in there as well

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hi,
SMS API(WMA) is an optional package. It is not a MIDP1.0 or MIDP2.0 api's.
There are phones which has WMA api with MIDP1.0 support .... Nokia 3650
Seimens has some phone with their own api's to send sms.Check out seimens site for more info
BTW, What do you mean buy sending SMS to Server????
If you want to send message to server you can do it with Http.
HTH
phani

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