ksz88x3_tc_ets_add(9)

✨ ksz88x3_tc_ets_add(9) ✨

okay so bestie, welcome to ksz88x3_tc_ets_add(9) — a page straight out of the Kernel API Manual and honestly? it's giving "small function, big scheduling opinions" 💅

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🌸 NAME 🌸

ksz88x3_tc_ets_add — the one where you configure ETS (Enhanced Transmission Selection, yes queen, spell it out) for a port on a KSZ88x3 switch 🦋

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🎀 SYNOPSIS 🎀

int ksz88x3_tc_ets_add (struct ksz_device *dev , int port , struct
tc_ets_qopt_offload_replace_params *p );

that's the whole vibe. three args, one int back, no cap 💖

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🫶 ARGUMENTS 🫶

• dev — pointer to the KSZ switch device structure. it's the switch itself, the main character of this whole operation 👑
• port — the port number you're configuring. which port? your port, bestie, you pick 🌈
• p — pointer to the offload replace parameters, aka the little bundle that describes the ETS bands and mapping 🎀

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💀 DESCRIPTION 💀

okay so here's the tea ☕ — the KSZ88x3 rocks two scheduling modes:

1. Strict Priority 🔥
2. Weighted Fair Queuing (WFQ) ⚖️

and both of them have fixed behavior. like, no notes, no knobs, no sliders, periodt:

• no configurable queue-to-priority mapping 🙈
• no weight adjustment in WFQ mode 😭

so what does this function actually do? it configures the switch to use strict priority mode by clearing the WFQ enable bit for all queues associated with ETS bands 💅 that's it, that's the whole job, and she does it flawlessly.

⚠️ important bestie: if strict priority is not explicitly requested, the switch will default to WFQ mode. so like… ask for what you want or the switch picks for you 🤷‍♀️

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⭐ RETURN ⭐

0 on success 🎉 — or a negative error code on failure 💀 (iykyk, always check the return value, it's the vibe check of syscalls fr fr)

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🧚 SEE ALSO 🧚

the whole friend group lives in the kernel file ./drivers/net/dsa/microchip/ksz8.c and they are:

• ksz8_ind_write8(9)
• ksz8_ind_read8(9)
• ksz879x_get_loopback(9)
• ksz879x_set_loopback(9)
• ksz8_r_phy_ctrl(9)
• ksz8_r_phy_bmcr(9)
• ksz8_w_phy_ctrl(9)
• ksz8_w_phy_bmcr(9)
• ksz88x3_tc_ets_del(9)
• ksz8_phy_port_link_up(9)
• ksz8_cpu_port_link_up(9)
• ksz88x3_drive_strength_write(9)
• ksz8_parse_drive_strength(9)

go read them too, they're iconic ✨

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and that's a wrap on this little manpage date 🍓 source: ./drivers/net/dsa/microchip, dated October 2026 — slay, bye bestie, go configure some strict priority 💜🎀