usb_tx_block(9)

💖 usb_tx_block(9) 💖

okay bestie, welcome to the Kernel API Manual ✨ this is the page for usb_tx_block — literally just "transfer data to the device", that's the whole vibe 🫶

🌸 SYNOPSIS 🌸

int usb_tx_block (struct if_usb_card *cardp , uint8_t *payload ,
uint16_t nb , u8 data );

✨ ARGUMENTS ✨

• cardp — a pointer to the if_usb_card, like the little ID badge for the card you're talking to 🎀
• payload — pointer to the payload data, aka the actual stuff you wanna send 💅
• nb — the data length, so the kernel knows how many bytes we're serving 🍓
• data — non-zero means it's data, zero means it's a command. that's the whole switch, no cap 🦋

👑 RETURN 👑

Returns 0 on success, and nonzero if it didn't slay 😭 (i.e. anything nonzero = not success).

🌈 SEE ALSO 🌈

• Kernel file ./drivers/net/wireless/marvell/libertas_tf/if_usb.c
• if_usb_write_bulk_callback(9)
• if_usb_free(9)
• if_usb_probe(9)
• if_usb_disconnect(9)
• if_usb_send_fw_pkt(9)
• if_usb_receive(9)
• if_usb_host_to_card(9)
• if_usb_issue_boot_command(9)
• check_fwfile_format(9)

ngl bestie, read the SEE ALSO list like it's the group chat roster — every single one of those functions is in the mix 💀

okay that's the whole page, ily, go transfer some data 💜

source/version: ./drivers/net/wireless/marvell... ⭐ dated October 2026 — mwah, signed off with love 🧚‍♀️💖