libnvme_mi_submit_entry(9) libnvme API manual libnvme_mi_submit_entry(9)

libnvme_mi_submit_entry - Weak hook called before an MI message is sent.

void * libnvme_mi_submit_entry (__u8 type , const struct nvme_mi_msg_hdr *hdr , size_t hdr_len , const void *data , size_t data_len );

MCTP message type
Pointer to the MI message header
Length of the message header in bytes
Pointer to message payload data
Length of payload data in bytes

This is a weak symbol that can be overridden by an application to intercept outgoing MI messages for tracing or testing purposes. The return value is passed back as user_data to the matching libnvme_mi_submit_exit call.

An opaque pointer passed to libnvme_mi_submit_exit, or NULL.

libnvme_mi_submit_entry September 2026