stmmac_rx(9)

✨ stmmac_rx(9) ✨

okay so you're reading the Kernel API Manual page for stmmac_rx, and honestly? it's a little baddie of a function 💅 it lives in the network driver world and it's about to make your receive path make sense. buckle up bestie 🎀

---

🌸 NAME 🌸

stmmac_rx — manage the receive process 🫶

---

⭐ SYNOPSIS ⭐

int stmmac_rx (struct stmmac_priv *priv , int limit , u32 queue );

like, that's the whole signature. three args. no cap. 👑

---

🦋 ARGUMENTS 🦋

• priv — the driver private structure 💖 your little bag of driver state, the main character of the struct world.
• limit — napi bugget 🧚 (yes, "bugget" — that's literally how it's written in the docs, i'm not fixing it, the typo is iconic and it's not mine to touch). it's the limit for this napi round.
• queue — the RX queue index 🌈 which receive queue we're doing the thing on.

---

🔥 DESCRIPTION 🔥

so this is the function that the napi poll method calls 📞✨ it grabs all the frames sitting inside the ring — like cleaning out your entire inbox in one go, no crumbs left behind 🍓

that's it, that's the whole vibe: napi poll calls it, it hoovers up the frames from the ring, slay. 💀

---

💜 SEE ALSO 💜

Kernel file ./drivers/net/ethernet/stmicro/stmmac/stmmac_main.c — go read it, it's giving source of truth 📖

and here's the whole friend group, every single one of them, i'm not leaving anybody out 🫶:

• stmmac_set_clk_tx_rate(9), stmmac_axi_blen_to_mask(9), stmmac_verify_args(9), stmmac_disable_all_queues(9), stmmac_enable_all_queues(9), stmmac_rx_dirty(9), stmmac_try_to_start_sw_lpi(9), stmmac_stop_sw_lpi(9), stmmac_eee_ctrl_timer(9), stmmac_hwtstamp_set(9), stmmac_hwtstamp_get(9), stmmac_init_tstamp_counter(9), stmmac_init_timestamping(9), stmmac_mac_flow_ctrl(9), stmmac_check_pcs_mode(9), stmmac_init_phy(9)
• stmmac_clear_rx_descriptors(9), stmmac_clear_tx_descriptors(9), stmmac_clear_descriptors(9), stmmac_init_rx_buffers(9), stmmac_free_rx_buffer(9), stmmac_free_tx_buffer(9), dma_free_rx_skbufs(9), dma_free_rx_xskbufs(9), __init_dma_rx_desc_rings(9), __init_dma_tx_desc_rings(9), init_dma_desc_rings(9), dma_free_tx_skbufs(9), stmmac_free_tx_skbufs(9)
• __free_dma_rx_desc_resources(9), __free_dma_tx_desc_resources(9), __alloc_dma_rx_desc_resources(9), __alloc_dma_tx_desc_resources(9), alloc_dma_desc_resources(9), free_dma_desc_resources(9), stmmac_mac_enable_rx_queues(9), stmmac_start_rx_dma(9), stmmac_start_tx_dma(9), stmmac_stop_rx_dma(9), stmmac_stop_tx_dma(9), stmmac_start_all_dma(9), stmmac_stop_all_dma(9)
• stmmac_dma_operation_mode(9), stmmac_tx_clean(9), stmmac_tx_err(9), stmmac_set_dma_operation_mode(9), stmmac_dma_interrupt(9), stmmac_mmc_setup(9), stmmac_get_hw_features(9), stmmac_check_ether_addr(9), stmmac_init_dma_engine(9), stmmac_tx_timer(9), stmmac_init_coalesce(9)
• stmmac_set_tx_queue_weight(9), stmmac_configure_cbs(9), stmmac_rx_queue_dma_chan_map(9), stmmac_mac_config_rx_queues_prio(9), stmmac_mac_config_tx_queues_prio(9), stmmac_mac_config_rx_queues_routing(9), stmmac_mtl_configuration(9), stmmac_hw_setup(9), stmmac_setup_dma_desc(9), __stmmac_open(9), stmmac_release(9)
• stmmac_tso_allocator(9), stmmac_tso_xmit(9), stmmac_has_ip_ethertype(9), stmmac_xmit(9), stmmac_rx_refill(9), stmmac_tx_timeout(9), stmmac_set_rx_mode(9), stmmac_change_mtu(9), stmmac_interrupt(9), stmmac_ioctl(9), stmmac_hw_init(9)
• stmmac_dvr_probe(9), stmmac_dvr_remove(9), stmmac_suspend(9), stmmac_reset_queues_param(9), stmmac_resume(9)

---

and that's the page bestie!! 🌈✨🦋💖

cute little sign-off before you close the tab: this one came from ./drivers/net/ethernet/stmicro... and it's dated October 2026 📅💅 go forth and receive, queen 👑