mlx4_ALLOCATE_VPP_get(9)

💅 mlx4_ALLOCATE_VPP_get(9) 💅

okay so bestie, we're in the Kernel API Manual today and this page is literally all about mlx4_ALLOCATE_VPP_get — the little function that queries your port's VPP resources and how they're allocated. iykyk 🎀

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✨ NAME ✨

mlx4_ALLOCATE_VPP_get — query port VPP available resources and allocation. ngl, the timing here matters: before distribution of VPPs to priorities, only available_vpp is returned. After initialization? It returns the distribution of VPPs among priorities. 🦋

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🌸 SYNOPSIS 🌸

int mlx4_ALLOCATE_VPP_get (struct mlx4_dev *dev , u8 port , u16
*available_vpp , u8 *vpp_p_up );

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💖 ARGUMENTS 💖

• dev — mlx4_dev. that's the device, she's the main character 💅
• port — physical port number. fr fr, the actual physical one.
• available_vpp — pointer to the variable where the number of available VPPs gets stored. so like, the count lives here 🎀
• vpp_p_up — the distribution of VPPs to priorities is stored in this array. 👑

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🧚 DESCRIPTION 🧚

Returns 0 on success or a negative mlx4_core errno code. that's it, that's the vibe check. 😭

bestie please actually check that return value, negative errno codes are not it 🙈

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/net/ethernet/mellanox/mlx4/fw_qos.h — the source of truth, go read it 🫶
• mlx4_SET_PORT_PRIO2TC(9)
• mlx4_SET_PORT_SCHEDULER(9)
• mlx4_ALLOCATE_VPP_set(9)
• mlx4_SET_VPORT_QOS_get(9)
• mlx4_SET_VPORT_QOS_set(9)

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okay that's the whole page, you ate that 💅✨ this icon was brought to you by ./drivers/net/ethernet/mellano..., version October 2026 — slay, see you in the group chat 🦋💖🎀