iavf_is_descriptor_done(9)

💅 iavf_is_descriptor_done — Kernel API Manual ✨

okay bestie, welcome to the iavf corner of the kernel, this one's a lil baby function from the Kernel API Manual and honestly it's giving "small but essential." 🎀

✨ NAME ✨

iavf_is_descriptor_done — it tests the DD bit in the Rx descriptor, that's the whole gig 🫶

🌸 SYNOPSIS 🌸

bool iavf_is_descriptor_done (u64 qw1 , bool flex );

🦋 ARGUMENTS 🦋

• qw1 — this is quad word 1 from the descriptor, and it's literally just there so we can grab the Descriptor Done field out of it 💖
• flex — tells us whether the descriptor is flex or legacy, like which era of descriptor we're dealing with 💅

🔥 DESCRIPTION 🔥

So what it does: it tests the descriptor done bit in the specified descriptor. Simple, iconic, no notes.

But here's the thing — there are two types of descriptors (legacy and flex, in case you missed it 👀) and the parameter rx_ring is used to distinguish between them. yep, that's what the page says, rx_ring, we don't make the rules we just read the docs fr fr 🙈

⭐ RETURN ⭐

true or false, based on the state of the DD bit in the Rx descriptor. that's it, that's the whole vibe check 💀

🌈 SEE ALSO 🌈

Kernel file ./drivers/net/ethernet/intel/iavf/iavf_txrx.c — go read it, it's a whole moment 🧚

• iavf_unmap_and_free_tx_resource(9)
• iavf_clean_tx_ring(9)
• iavf_free_tx_resources(9)
• iavf_get_tx_pending(9)
• iavf_force_wb(9)
• iavf_detect_recover_hung(9)
• iavf_clean_tx_irq(9)
• iavf_enable_wb_on_itr(9)
• iavf_update_itr(9)
• iavf_setup_tx_descriptors(9)
• iavf_clean_rx_ring(9)
• iavf_free_rx_resources(9)
• iavf_setup_rx_descriptors(9)
• iavf_release_rx_desc(9)
• iavf_receive_skb(9)
• iavf_alloc_rx_buffers(9)
• iavf_rx_csum(9)
• iavf_legacy_rx_csum(9)
• iavf_flex_rx_csum(9)
• iavf_legacy_rx_hash(9)
• iavf_flex_rx_hash(9)
• iavf_flex_rx_tstamp(9)
• iavf_process_skb_fields(9)
• iavf_cleanup_headers(9)
• iavf_add_rx_frag(9)
• iavf_build_skb(9)
• iavf_is_non_eop(9)
• iavf_extract_legacy_rx_fields(9)
• iavf_extract_flex_rx_fields(9)
• iavf_clean_rx_irq(9)
• iavf_update_enable_itr(9)
• iavf_napi_poll(9)
• iavf_tx_prepare_vlan_flags(9)
• iavf_tso(9)
• iavf_tx_enable_csum(9)
• iavf_create_tx_ctx(9)
• __iavf_chk_linearize(9)
• __iavf_maybe_stop_tx(9)
• iavf_tx_map(9)
• iavf_xmit_frame_ring(9)
• iavf_xmit_frame(9)

and that's the whole page bestie, mwah 💋 this came to you from ./drivers/net/ethernet/intel/iavf and it's dated October 2026 — iavf_is_descriptor_done(9), slay, periodt, go check that DD bit 🍓👑