csx_AccessConfigurationRegister(9F)
csx_Parse_CISTPL_BYTEORDER(9F)
csx_Parse_CISTPL_CFTABLE_ENTRY(9F)
csx_Parse_CISTPL_DEVICEGEO(9F)
csx_Parse_CISTPL_DEVICEGEO_A(9F)
csx_Parse_CISTPL_DEVICE_OA(9F)
csx_Parse_CISTPL_DEVICE_OC(9F)
csx_Parse_CISTPL_LINKTARGET(9F)
csx_Parse_CISTPL_LONGLINK_A(9F)
csx_Parse_CISTPL_LONGLINK_C(9F)
csx_Parse_CISTPL_LONGLINK_MFC(9F)
ddi_get_soft_iblock_cookie(9F)
ddi_intr_get_supported_types(9F)
ddi_prop_lookup_byte_array(9F)
ddi_prop_lookup_int64_array(9F)
ddi_prop_lookup_string_array(9F)
ddi_prop_update_byte_array(9F)
ddi_prop_update_int64_array(9F)
ddi_prop_update_string_array(9F)
ldi_prop_lookup_byte_array(9F)
ldi_prop_lookup_int64_array(9F)
ldi_prop_lookup_string_array(9F)
mac_prop_info_set_default_link_flowctrl(9F)
mac_prop_info_set_default_str(9F)
mac_prop_info_set_default_uint8(9F)
mac_prop_info_set_range_uint32(9F)
net_event_notify_unregister(9F)
net_instance_notify_register(9F)
net_instance_notify_unregister(9F)
net_instance_protocol_unregister(9F)
net_protocol_notify_register(9F)
nvlist_lookup_boolean_array(9F)
nvlist_lookup_boolean_value(9F)
nvlist_lookup_nvlist_array(9F)
nvlist_lookup_string_array(9F)
nvlist_lookup_uint16_array(9F)
nvlist_lookup_uint32_array(9F)
nvlist_lookup_uint64_array(9F)
nvpair_value_boolean_array(9F)
scsi_get_device_type_scsi_options(9F)
usb_get_current_frame_number(9F)
usb_get_max_pkts_per_isoc_request(9F)
usb_pipe_get_max_bulk_transfer_size(9F)
usb_pipe_stop_intr_polling(9F)
usb_pipe_stop_isoc_polling(9F)
- send a control message to a queue
#include <sys/stream.h> int putnextctl(queue_t *q, int type);
Architecture independent level 1 (DDI/DKI).
Queue to which the message is to be sent.
Message type (must be control, not data type).
The putnextctl() function tests the type argument to make sure a data type has not been specified, and then attempts to allocate a message block. putnextctl() fails if type is M_DATA, M_PROTO, or M_PCPROTO, or if a message block cannot be allocated. If successful, putnextctl() calls the put(9E) routine of the queue pointed to by q with the newly allocated and initialized messages.
A call to putnextctl(q,type) is an atomic equivalent of putctl(q->q_next,type). The STREAMS framework provides whatever mutual exclusion is necessary to insure that dereferencing q through its q_next field and then invoking putctl(9F) proceeds without interference from other threads.
The putnextctl() function should always be used in preference to putctl(9F)
On success, 1 is returned. If type is a data type, or if a message block cannot be allocated, 0 is returned.
The putnextctl() function can be user, interrupt, or kernel context.
The send_ctl routine is used to pass control messages downstream. M_BREAK messages are handled with putnextctl( ) (line 8). putnextctl1(9F) (line 13) is used for M_DELAY messages, so that parm can be used to specify the length of the delay. In either case, if a message block cannot be allocated a variable recording the number of allocation failures is incremented (lines 9, 14). If an invalid message type is detected, cmn_err(9F) panics the system (line 18).
1 void 2 send_ctl(queue_t *wrq, uchar_t type, uchar_t parm) 3 { 4 extern int num_alloc_fail; 5 6 switch (type) { 7 case M_BREAK: 8 if (!putnextctl(wrq, M_BREAK)) 9 num_alloc_fail++; 10 break; 11 12 case M_DELAY: 13 if (!putnextctl1(wrq, M_DELAY, parm)) 14 num_alloc_fail++; 15 break; 16 17 default: 18 cmn_err(CE_PANIC, "send_ctl: bad message type passed"); 19 break; 20 } 21 }
put(9E), cmn_err(9F), datamsg(9F), putctl(9F), putnextctl1(9F)