igb_check_for_msg(9)

💖 igb_check_for_msg — the "u got mail?" check 💌

okay bestie, so this is igb_check_for_msg(9) from the Kernel API Manual, and honestly? it's giving mailbox receptionist energy. it's literally just asking "hey… did someone send us mail??" 🎀

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✨ SYNOPSIS ✨

s32 igb_check_for_msg (struct e1000_hw *hw , u16 mbx_id );

that's the whole vibe. returns an s32, takes two args, no drama. 💅

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🌸 ARGUMENTS 🌸

• hw — pointer to the HW structure. it's the hardware handshake, the main character, the thing that actually knows stuff. 🫶
• mbx_id — id of mailbox to check. yes they're numbered, yes you gotta say which mailbox you're snooping on. 👑

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🦋 DESCRIPTION 🦋

so it returns SUCCESS if the Status bit was found — like, congrats, there IS mail, slay 💌 — or else ERR_MBX. no Status bit, no mail, no vibes. that's it, that's the function. lowkey iconic in its simplicity fr fr ✨

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🔥 SEE ALSO 🔥

the kernel file, obvi:

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

and the whole mbx friend group — they all show up together, it's a whole squad 🧚:

• igb_read_mbx(9)
• igb_write_mbx(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_write_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)

ngl, that's a lot of mbx functions, but every single one matters and none of them are getting cut from this page 💀💖

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and that's the page, bestie! brought to you by ./drivers/net/ethernet/intel/igb 🌈, version-dated October 2026 ⭐ — go check ur mail, ilysm 🫶🎀