igb_write_posted_mbx(9)

✨ NAME ✨

igb_write_posted_mbx — write a message to the mailbox, wait for ack. Ok bestie, this page is from the Kernel API Manual, and it is literally all about dropping a message into the mailbox and waiting for the ack to come back. 💌

💌 SYNOPSIS 💌

s32 igb_write_posted_mbx (struct e1000_hw *hw , u32 *msg , u16 size ,
       u16 mbx_id );

🎀 ARGUMENTS 🎀

• hw — pointer to the HW structure. The hardware pointer, the main character of this whole operation.
• msg — the message buffer. Yes, the actual message goes here.
• size — length of buffer. Gotta know how much buffer we're working with, periodt.
• mbx_id — id of mailbox to write. This tells you which mailbox is getting the message. Slay.

🦋 DESCRIPTION 🦋

This function returns SUCCESS if it successfully copied the message into the buffer and received an ack to that message within the delay * timeout period. That's the entire vibe: copy the message, get the ack, and if both happen inside that window, it's SUCCESS energy. 🔥

Ngl, the timing is the whole point: the ack has to arrive within delay * timeout, not just whenever it feels like it. 💅

🌈 SEE ALSO 🌈

Kernel file: ./drivers/net/ethernet/intel/igb/e1000_mbx.c

• igb_read_mbx(9)
• igb_write_mbx(9)
• igb_check_for_msg(9)
• igb_check_for_ack(9)
• igb_check_for_rst(9)
• igb_unlock_mbx(9)
• igb_poll_for_msg(9)
• igb_poll_for_ack(9)
• igb_read_posted_mbx(9)
• igb_check_for_msg_pf(9)
• igb_check_for_ack_pf(9)
• igb_check_for_rst_pf(9)
• igb_obtain_mbx_lock_pf(9)
• igb_release_mbx_lock_pf(9)
• igb_write_mbx_pf(9)
• igb_read_mbx_pf(9)
• igb_init_mbx_params_pf(9)

xoxo, source/version is ./drivers/net/ethernet/intel/igb, and the date on this cutie is October 2026 🫶