fm10k_host_mbx_ready(9)

✨ fm10k_host_mbx_ready(9) ✨

okay bestie, gather round 💖 this one's a kernel API page from the Kernel API Manual and it's lowkey a little gatekeeper function — it does a vibe check on the PF interface's mailbox before we start shoving messages at it. let's get into it 🎀

🌸 NAME 🌸

fm10k_host_mbx_ready — Check PF interface's mailbox readiness 👑

🦋 SYNOPSIS 🦋

bool fm10k_host_mbx_ready (struct fm10k_intfc *interface );

💅 ARGUMENTS 💅

• interface — board private structure 🫶

⭐ DESCRIPTION ⭐

so here's the tea: this function checks if the PF interface's mailbox is ready before you queue up mailbox messages for transmission. it's giving polite bestie energy — it literally stops you from filling the TX mailbox queue when the receiver isn't ready yet, which is such a slay. no wasting queue space on someone who isn't picking up the phone, periodt 💀

VF interfaces are exempt from this check, and honestly there's a good reason for that: doing the check on them would block all PF-VF mailbox messages from being sent from the VF to the PF at initialization. and like… that would be a mess 😭 so the VFs get a pass. iconic behavior, truly.

🔥 SEE ALSO 🔥

the whole friend group, no cap:

• Kernel file ./drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
• fm10k_setup_tx_resources(9), fm10k_setup_all_tx_resources(9)
• fm10k_setup_rx_resources(9), fm10k_setup_all_rx_resources(9)
• fm10k_clean_tx_ring(9), fm10k_free_tx_resources(9)
• fm10k_clean_all_tx_rings(9), fm10k_free_all_tx_resources(9)
• fm10k_clean_rx_ring(9), fm10k_free_rx_resources(9)
• fm10k_clean_all_rx_rings(9), fm10k_free_all_rx_resources(9)
• fm10k_request_glort_range(9), fm10k_restore_udp_port_info(9)
• fm10k_udp_tunnel_sync(9), fm10k_open(9), fm10k_close(9)
• fm10k_tx_timeout(9), fm10k_queue_vlan_request(9)
• fm10k_queue_mac_request(9), fm10k_clear_macvlan_queue(9)
• fm10k_get_stats64(9)

and that's the whole page, bestie 💜 this lil gem lives over at ./drivers/net/ethernet/intel/f... and it's dated October 2026 — same manual, same function, just way more glitter ✨🦋💖 mwah, go check that mailbox readiness before you queue anything, iykyk 🌈👑