ssh_ptl_init(9)

✨ ssh_ptl_init(9) ✨

okay so bestie, we're in the Kernel API Manual today and this page is literally about ssh_ptl_init — a kernel function, not the ssh you're thinking of, iykyk. grab a lil snack 🍓 and let's get into it.

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🌸 NAME 🌸

ssh_ptl_init — initialize the packet transport layer. that's it, that's the whole vibe. 💅

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🦋 SYNOPSIS 🦋

int ssh_ptl_init (struct ssh_ptl *ptl , struct serdev_device *serdev ,
       struct ssh_ptl_ops *ops );

like, it returns an int, it takes three things, iconic behavior honestly.

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🎀 ARGUMENTS 🎀

• ptl — the packet transport layer you're initializing. this is your main character right here 👑
• serdev — the underlying serial device, a.k.a. the lower-level transport. the supporting cast. the bestie in the back. 🫶
• ops — the packet layer operations. all the little behaviors. ✨

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🌈 DESCRIPTION 🌈

so what it does: it initializes the given packet transport layer. simple, clean, slay.

but — and this is the part everyone skips — it does not start the threads for you, no ma'am. the transmitter and receiver threads have to be started separately via ssh_ptl_tx_start and ssh_ptl_rx_start. and the order matters, bestie:

do it after the packet-layer has been initialized and the lower-level transport layer has been set up. not before. periodt. 🔥

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💜 RETURN 💜

• returns zero on success 🎉
• returns a nonzero error code on failure 😭

no in-between, it's giving binary.

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⭐ SEE ALSO ⭐

literally the whole friend group, no cap — they all show up:

• Kernel file ./drivers/platform/surface/aggregator/ssh_packet_layer.c
• ssh_ptl_should_drop_ack_packet(9)
• ssh_ptl_should_drop_nak_packet(9)
• ssh_ptl_should_drop_dsq_packet(9)
• ssh_ptl_should_fail_write(9)
• ssh_ptl_should_corrupt_tx_data(9)
• ssh_ptl_should_corrupt_rx_syn(9)
• ssh_ptl_should_corrupt_rx_data(9)
• ssh_packet_get(9)
• ssh_packet_put(9)
• ssh_packet_init(9)
• ssh_ctrl_packet_cache_init(9)
• ssh_ctrl_packet_cache_destroy(9)
• ssh_ctrl_packet_alloc(9)
• ssh_ctrl_packet_free(9)
• ssh_ptl_tx_wakeup_packet(9)
• ssh_ptl_tx_start(9)
• ssh_ptl_tx_stop(9)
• ssh_ptl_submit(9)
• ssh_ptl_cancel(9)
• ssh_ptl_rx_start(9)
• ssh_ptl_rx_stop(9)
• ssh_ptl_rx_rcvbuf(9)
• ssh_ptl_shutdown(9)
• ssh_ptl_destroy(9)

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and that's the page, babes 🧚 this lil doc came out of ./drivers/platform/surface/agg... and it's dated October 2026 — so like, future vibes fr fr. go forth and initialize responsibly 💖🎀💅