i40e_get_rx_buffer(9)

🎀 i40e_get_rx_buffer(9) 🎀

okay so bestie, this is a page straight out of the Kernel API Manual — i40e_get_rx_buffer(9) — and it's genuinely such a little main-character function. tiny page, huge job. let's get into it 💅

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✨ NAME ✨

i40e_get_rx_buffer — fetch an Rx buffer and synchronize the data so it's ready to use 🫶

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🦋 SYNOPSIS 🦋

struct i40e_rx_buffer * i40e_get_rx_buffer (struct i40e_ring *rx_ring ,
const unsigned int size );

that signature is literally giving "give me a ring and a size and I'll handle the rest" ✨

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💅 ARGUMENTS 💅

• rx_ring — the rx descriptor ring where the packet transactions happen. this is the ring, bestie, the whole vibe lives here 💫
• size — the size of the buffer to add to the skb. yep, that's the number you hand over 📏

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🌸 DESCRIPTION 🌸

so what does it actually do? it pulls an Rx buffer off the ring, and then it synchronizes that buffer so the CPU can use it 😌 that's the whole flex. fetch the buffer, make the data safe for CPU consumption. iconic, efficient, no notes 👑

ngl this is the kind of function that does one (1) job and does it flawlessly. we stan a specialist 🎀

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🔥 SEE ALSO 🔥

the kernel file in question is ./drivers/net/ethernet/intel/i40e/i40e_txrx.c — and then there's a whole friend group of related functions, so buckle up 💖

• i40e_fdir(9), i40e_program_fdir_filter(9), i40e_create_dummy_packet(9), i40e_create_dummy_udp_packet(9)
• i40e_create_dummy_tcp_packet(9), i40e_create_dummy_sctp_packet(9), i40e_prepare_fdir_filter(9), i40e_change_filter_num(9)
• i40e_add_del_fdir_udp(9), i40e_add_del_fdir_tcp(9), i40e_add_del_fdir_sctp(9), i40e_add_del_fdir_ip(9)
• i40e_add_del_fdir(9), i40e_fd_handle_status(9), i40e_unmap_and_free_tx_resource(9), i40e_clean_tx_ring(9)
• i40e_free_tx_resources(9), i40e_get_tx_pending(9), i40e_detect_recover_hung(9), i40e_clean_tx_irq(9)
• i40e_enable_wb_on_itr(9), i40e_force_wb(9), i40e_update_itr(9), i40e_reuse_rx_page(9)
• i40e_clean_programming_status(9), i40e_setup_tx_descriptors(9), i40e_clean_rx_ring(9), i40e_free_rx_resources(9)
• i40e_setup_rx_descriptors(9), i40e_release_rx_desc(9), i40e_alloc_mapped_page(9), i40e_alloc_rx_buffers(9)
• i40e_rx_checksum(9), i40e_rx_hash(9), i40e_process_skb_fields(9), i40e_cleanup_headers(9)
• i40e_can_reuse_rx_page(9), i40e_rx_buffer_flip(9), i40e_put_rx_buffer(9), i40e_process_rx_buffs(9)
• i40e_construct_skb(9), i40e_build_skb(9), i40e_is_non_eop(9), i40e_run_xdp(9)
• i40e_xdp_ring_update_tail(9), i40e_update_rx_stats(9), i40e_finalize_xdp_rx(9), i40e_inc_ntp(9)
• i40e_add_xdp_frag(9), i40e_consume_xdp_buff(9), i40e_clean_rx_irq(9), i40e_buildreg_itr(9)
• i40e_update_enable_itr(9), i40e_napi_poll(9), i40e_atr(9), i40e_tx_prepare_vlan_flags(9)
• i40e_tso(9), i40e_tsyn(9), i40e_tx_enable_csum(9), i40e_create_tx_ctx(9)
• __i40e_maybe_stop_tx(9), __i40e_chk_linearize(9), i40e_tx_map(9), i40e_xmit_xdp_ring(9)
• i40e_xmit_frame_ring(9), i40e_lan_xmit_frame(9), i40e_xdp_xmit(9)

like, that's a squad 😭💀 go read them, they're all right there in the same neighborhood, iykyk 🧚

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and that's the whole page, bestie — ty for coming to my ted talk 🫶

this cutie came out of ./drivers/net/ethernet/intel/i40e, dated October 2026, and yes i40e_get_rx_buffer(9) is the moment 💜⭐