xcan_rx_poll(9)

💖 xcan_rx_poll 💖

okay bestie, welcome to xcan_rx_poll(9) — it's a Kernel API Manual page and it's literally the poll routine for rx packets (NAPI). yes, we're in the CAN driver trenches today and we're gonna slay it 🦋

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✨ NAME ✨

xcan_rx_poll — the poll routine for rx packets, and yes it's NAPI, iykyk 💅

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✨ SYNOPSIS ✨

int xcan_rx_poll (struct napi_struct *napi , int quota );

like, that's the whole vibe. two args, one int coming back at you 🎀

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✨ ARGUMENTS ✨

• napi — a pointer to the napi structure. that's it, that's the whole thing, she's just a pointer 💫
• quota — the max number of rx packets to be processed. think of it as the packet budget, and we do not go over budget bestie 🙈

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✨ DESCRIPTION ✨

so this is the poll routine for the rx part, periodt. it processes the packets up to that maximum quota value — no more, no less, the girl knows her limits 💅✨

ngl it's a short one but she's lowkey the main character of the receive path 🎀

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✨ RETURN ✨

it returns the number of packets received 🫶 that's the whole return value. count 'em and hand 'em over, no cap 📦

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✨ SEE ALSO ✨

bestie there's a whole friend group here, like an entire group chat of xilinx CAN functions, and every single one of them is invited 🌸

first up, the source file itself: the kernel file ./drivers/net/can/xilinx_can.c 👑

then the ensemble cast, in order, no one gets left out:

• struct xcan_priv(9)
• xcan_write_reg_le(9)
• xcan_read_reg_le(9)
• xcan_write_reg_be(9)
• xcan_read_reg_be(9)
• xcan_rx_int_mask(9)
• set_reset_mode(9)
• xcan_set_bittiming(9)
• xcan_chip_start(9)
• xcan_do_set_mode(9)
• xcan_write_frame(9)
• xcan_start_xmit_fifo(9)
• xcan_start_xmit_mailbox(9)
• xcan_start_xmit(9)
• xcan_rx(9)
• xcanfd_rx(9)
• xcan_current_error_state(9)
• xcan_set_error_state(9)
• xcan_update_error_state_after_rxtx(9)
• xcan_err_interrupt(9)
• xcan_state_interrupt(9)
• xcan_rx_fifo_get_next_frame(9)
• xcan_tx_interrupt(9)
• xcan_interrupt(9)
• xcan_chip_stop(9)
• xcan_open(9)
• xcan_close(9)
• xcan_get_berr_counter(9)
• xcan_get_auto_tdcv(9)
• xcan_suspend(9)
• xcan_resume(9)
• xcan_runtime_suspend(9)
• xcan_runtime_resume(9)
• xcan_probe(9)
• xcan_remove(9)

like, go read them all, they're all icons in their own right 💜

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lowkey reminder: this is kernel documentation, so if you're poking at the rx path, read the actual source too — the manpage is the vibe check, not the whole story 🧚

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and that's the page bestie!! 💖 this lil beauty lives down in ./drivers/net/can and it's dated October 2026 — so yeah, she's from the future and she's still iconic 🌈⭐ mwah, go process those packets responsibly 🎀