STRUCT PSP_DEV_OPS(9)

💖 struct psp_dev_ops(9) — like, the netdev driver's PSP callback era 💖

okay bestie, gather round, because this is a page out of the Kernel API Manual and it's genuinely iconic. it's all about struct psp_dev_ops — which is, no cap, the netdev driver facing PSP callbacks. that's the whole vibe. it's the little bundle of function pointers a netdev driver hands over so the PSP core can call back into it. iykyk 🫶

✨ NAME ✨

struct psp_dev_ops — netdev driver facing PSP callbacks. yes, that's it, that's the assignment. 💅

🌸 SYNOPSIS 🌸

ok so here's the shape of it, verbatim, do not touch, she's perfect:

struct psp_dev_ops {
    int (*set_config)(struct psp_dev *psd, struct psp_dev_config *conf,
struct netlink_ext_ack *extack);
    int (*key_rotate)(struct psp_dev *psd, struct netlink_ext_ack
*extack);
    int (*rx_spi_alloc)(struct psp_dev *psd, u32 version, struct
psp_key_parsed *assoc, struct netlink_ext_ack *extack);
    int (*tx_key_add)(struct psp_dev *psd, struct psp_assoc *pas, struct
netlink_ext_ack *extack);
    void (*tx_key_del)(struct psp_dev *psd, struct psp_assoc *pas);
    void (*get_stats)(struct psp_dev *psd, struct psp_dev_stats *stats);
 };

🎀 Members 🎀

bestie these are the six whole members and every single one is doing main character energy. let's go:

• set_config — set configuration of a PSP device. the driver is allowed to peek at psd->config to see the previous configuration (like, a little looky-loo at the old fit before the new one 👀). and then the Core will update psd->config with config on success. slay.
• key_rotate — rotate the device key. short, sweet, iconic. that's the whole thing. 🔄
• rx_spi_alloc — allocate an Rx SPI+key pair. it allocates an Rx SPI and the resulting derived key. and ngl, this key should remain valid until key rotation. periodt.
• tx_key_add — add a Tx key to the device. it installs an association in the device, and the Core will allocate space for the driver to use at drv_data. cute little reserved seat, we love that for you 🪑
• tx_key_del — remove a Tx key from the device. it removes an association from the device. bye bestie 👋
• get_stats — get statistics from the device. the Stats required by the spec must be maintained and filled in. and here's the ✨actually important✨ one:

⚠️ Stats must be filled in member-by-member, never memset the struct. like, do NOT do the lazy memset thing. i am begging. it's giving undefined chaos and we simply do not stan. 💀

🦋 SEE ALSO 🦋

go touch grass in the Kernel file ./include/net/psp/types.h — and while you're there, say hi to her friends:

• struct psp_dev_config(9)
• struct psp_assoc_dev(9)
• struct psp_dev(9)
• struct psp_dev_caps(9)

okay that's the whole page!! you ate that, honestly. this one lives in ./include/net/psp and it's tagged October 2026 — so go forth, fill your stats member-by-member, and remember: never memset. mwah 💋🌸💖