fbnic_fw_xmit_test_msg(9)

💌 fbnic_fw_xmit_test_msg — like, the kernel API manual page, bestie

okay so real talk, this is fbnic_fw_xmit_test_msg(9) from the Kernel API Manual and it's genuinely such a little icon. it builds a test message and yeets it at the firmware mailbox. that's the whole vibe. let's get into it 🫶

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✨ SYNOPSIS ✨

int fbnic_fw_xmit_test_msg (struct fbnic_dev *fbd , struct
       fbnic_fw_completion *cmpl );

that's it. that's the function. int going in, int coming out (well, an int comes back, you know what i mean 💅).

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🎀 ARGUMENTS 🎀

• fbd — the FBNIC device structure. your actual device. the main character of the operation, ngl 🦋
• cmpl — the fw completion struct. lowkey optional-ish in spirit, but we'll get to that in a sec 😌

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🌸 RETURN 🌸

• zero on success — slay ✨
• negative value on failure — not slay 😭

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💖 DESCRIPTION 💖

so what this does is it generates a single page mailbox test message and places it in the Tx mailbox queue. that's the whole move. one page. test message. into the queue. periodt 🎀

the expectation here is that the FW will validate that the nested value matches the external values, and then it'll echo them back to us. so it's basically the firmware going "mhm yes i see your values, they match, here they are right back at you" — a little mirror moment, a vibe check in mailbox form 🌈

also!! when the cmpl arg is non-NULL, it sets a completion slot for use in the completion wait calls. so like, if you pass a real completion struct you get a lil slot reserved so you can wait on it later. if you pass NULL, no slot, no waiting, no problem 🙈

heads up bestie — the completion slot only gets set when cmpl is non-NULL. that's the condition. don't forget it 💀

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/net/ethernet/meta/fbnic/fbnic_fw.c
• fbnic_fw_xmit_simple_msg(9)
• fbnic_fw_xmit_ownership_msg(9)
• fbnic_fw_xmit_coredump_info_msg(9)
• fbnic_fw_xmit_coredump_read_msg(9)
• fbnic_fw_xmit_qsfp_read_msg(9)
• fbnic_fw_xmit_tsene_read_msg(9)
• fbnic_fw_mbx_self_test(9)

like the whole xmit squad fr fr 👑

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and that's the page!! brought to you by ./drivers/net/ethernet/meta/fbnic, dated October 2026, and the manual itself is fbnic_fw_xmit_test_msg(9) — go forth and transmit your test messages, bestie, ily 💜🧚‍♀️🍓