dpni_set_buffer_layout(9)

💅 dpni_set_buffer_layout(9) — like, the Kernel API Manual one 🎀

Okay bestie, so this is dpni_set_buffer_layout(9) from the Kernel API Manual, and it's literally the glow-up button for your buffer layout config ✨ like the function that sets the whole vibe of how buffers are laid out. Let's go 🫶

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🌸 NAME 🌸

dpni_set_buffer_layout — Set buffer layout configuration. That's it, that's the whole thing, no cap 💅

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✨ SYNOPSIS ✨

int dpni_set_buffer_layout (struct fsl_mc_io *mc_io , u32 cmd_flags ,
       u16 token , enum dpni_queue_type qtype , const struct dpni_buffer_layout
       *layout );

She takes five arguments and returns an int — iconic signature, no notes 👑

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🎀 ARGUMENTS 🎀

• mc_io — Pointer to MC portal's I/O object. Your little doorway into the MC portal, fr fr 🚪
• cmd_flags — Command flags; one or more of 'MC_CMD_FLAG_'. Yes bestie, one or more, stack 'em 🌈
• token — Token of DPNI object. It's the DPNI's little ID badge 🪪
• qtype — Type of queue this configuration applies to. Which queue are we doing a makeover on? 👀
• layout — Buffer layout configuration. The actual fit check, the outfit itself 💖

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🔥 RETURN 🔥

So the RETURN section is just... sitting there. Nothing in it. The manpage gives it a heading and then dips 😭 no description, no exit codes, nothing — not me noticing the silence 💀

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🦋 DESCRIPTION 🦋

• warning — Allowed only when DPNI is disabled. Read that again, bestie 🚨 the DPNI has to be off before you touch the buffer layout. Do not come for this while she's running, that's the whole rule 🙈

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👑 SEE ALSO 👑

The kernel file lives right here, go peek: ./drivers/net/ethernet/freescale/dpaa2/dpni.c 📁

And the whole friend group, in order, every single one of them:

• dpni_prepare_key_cfg(9), dpni_open(9), dpni_close(9), dpni_set_pools(9), dpni_enable(9), dpni_disable(9), dpni_is_enabled(9), dpni_reset(9), dpni_set_irq_enable(9), dpni_get_irq_enable(9), dpni_set_irq_mask(9), dpni_get_irq_mask(9), dpni_get_irq_status(9), dpni_clear_irq_status(9), dpni_get_attributes(9), dpni_set_errors_behavior(9), dpni_get_buffer_layout(9), dpni_set_offload(9), dpni_get_qdid(9), dpni_get_tx_data_offset(9), dpni_set_link_cfg(9), dpni_get_link_cfg(9), dpni_get_link_state(9), dpni_set_max_frame_length(9), dpni_get_max_frame_length(9), dpni_set_multicast_promisc(9), dpni_get_multicast_promisc(9), dpni_set_unicast_promisc(9), dpni_get_unicast_promisc(9), dpni_set_primary_mac_addr(9), dpni_get_primary_mac_addr(9), dpni_get_port_mac_addr(9), dpni_enable_vlan_filter(9), dpni_add_vlan_id(9), dpni_remove_vlan_id(9), dpni_add_mac_addr(9), dpni_remove_mac_addr(9), dpni_clear_mac_filters(9), dpni_set_rx_tc_dist(9), dpni_set_congestion_notification(9), dpni_set_queue(9), dpni_get_queue(9), dpni_get_statistics(9), dpni_set_taildrop(9), dpni_get_taildrop(9), dpni_get_api_version(9), dpni_set_rx_fs_dist(9), dpni_set_rx_hash_dist(9), dpni_add_fs_entry(9), dpni_remove_fs_entry(9), dpni_set_qos_table(9), dpni_add_qos_entry(9), dpni_remove_qos_entry(9), dpni_clear_qos_table(9), dpni_set_tx_shaping(9), dpni_get_single_step_cfg(9), dpni_set_single_step_cfg(9)

Like, all of them. Every last one. I counted, she counted, we all counted 💅

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And that's the page, bestie — sourced from ./drivers/net/ethernet/freesca... and dated October 2026 🗓️✨ mwah, go set those buffer layouts (with the DPNI disabled, obviously) 🧚‍♀️💜