STRUCT PPE_QM_QUEUE_CONFIG(9)

💖 struct ppe_qm_queue_config — PPE queue config 💖

Okay bestie, sit down, because we're reading a Kernel API Manual page together and honestly? It slaps. This is the struct ppe_qm_queue_config page, and it's giving hardware queue threshold realness — like, this is the little config bundle that tells the PPE exactly when to start dropping packets. Iconic behavior fr fr 💅

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✨ NAME ✨

struct ppe_qm_queue_config — PPE queue config. That's it, that's the whole vibe. Short. Punchy. Main character energy 🎀

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🌸 SYNOPSIS 🌸

Here's the struct in all its glory, character-for-character, don't touch a single semicolon:

struct ppe_qm_queue_config {
    unsigned int queue_start;
    unsigned int queue_end;
    unsigned int prealloc_buf;
    unsigned int ceil;
    unsigned int weight;
    unsigned int resume_offset;
    bool dynamic;
 };

Look at those fields. Seven of them. Each one pulling its weight (pun fully intended, you'll see) 👑

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🦋 Members 🦋

Let's meet the cast, one by one:

• queue_start — the PPE start of queue ID. Where the queue begins, bestie. The opening act 💫
• queue_end — the PPE end of queue ID. The finale. The curtain call. 🎬
• prealloc_buf — the queue dedicated buffer number. Dedicated! Like it has its own little reserved spot. We love a buffer with commitment 🫶
• ceil — the ceil to start drop packet from queue. This is the ceiling where the PPE goes "okay that's enough, packets gotta go" 📉
• weight — the weight value. Yes it's literally just called that. No notes. ⚖️
• resume_offset — the resume offset from the threshold. Where things pick back up after the threshold moment 🌈
• dynamic — a bool that says whether the threshold value is decided dynamically or statically. Dynamic or static, pick your fighter 💀

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🧚 Description 🧚

So here's the tea: the queue configuration decides the threshold to drop packet from PPE hardware queue. That's the whole job. It's the thing that determines when the hardware queue says "nope, dropping you" — and honestly, someone's gotta make that call 😭

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🔥 SEE ALSO 🔥

Bestie, the cross-reference list is long and we're reading every single one, no skips, no shortcuts:

• Kernel file ./drivers/net/ethernet/qualcomm/ppe/ppe_config.c struct ppe_bm_port_config(9)
• enum ppe_scheduler_direction(9)
• struct ppe_scheduler_bm_config(9)
• struct ppe_scheduler_qm_config(9)
• struct ppe_scheduler_port_config(9)
• struct ppe_port_schedule_resource(9)
• ppe_queue_scheduler_set(9)
• ppe_queue_ucast_base_set(9)
• ppe_queue_ucast_offset_pri_set(9)
• ppe_queue_ucast_offset_hash_set(9)
• ppe_port_resource_get(9)
• ppe_sc_config_set(9)
• ppe_counter_enable_set(9)
• ppe_rss_hash_config_set(9)
• ppe_ring_queue_map_set(9)

Go read them all, I'll wait. Take your time. Hydrate first 💜

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Heads up bestie: everything above is exactly what the page says — don't go inventing behavior that isn't there, iykyk 🙈

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Okay that's the whole page, and it ate, no cap. This one came from ./drivers/net/ethernet/qualcom... and it's dated October 2026 — so like, future knowledge, lowkey iconic 👑✨💖 Slay responsibly, and remember: the threshold is only as good as the config. Periodt. 🎀