do_gro(9)

💅 do_gro(9) — like, the whole Kernel API Manual vibe ✨

okay bestie, welcome to another episode of "kernel functions that are lowkey iconic." this one's called do_gro, and she lives in the Kernel API Manual, so you know she's official 🎀

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🌸 NAME 🌸

do_gro — perform Generic Receive Offload ingress packet processing

like, she does the GRO thing on packets coming in. ingress girlie. 🦋

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✨ SYNOPSIS ✨

void do_gro (struct sge_eth_rxq *rxq , const struct pkt_gl *gl , const
struct cpl_rx_pkt *pkt );

returns void, so no sneaky return values to worry about, periodt 💅

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🫶 ARGUMENTS 🫶

• rxq — ingress RX Ethernet Queue. yes bestie, the receive queue, she's the one holding the packets 💖
• gl — gather list for ingress packet. it's giving "all the fragments, gathered" 🌸
• pkt — CPL header for last packet fragment. the final little header, the last one in the lineup ⭐

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🔥 DESCRIPTION 🔥

Perform Generic Receive Offload (GRO) ingress packet processing. fr fr that's the whole job description 💀

and the way we do it? we use the standard Linux GRO interfaces for this. no custom homemade situation, just the standard Linux ones, iykyk 👑

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🧚 SEE ALSO 🧚

Kernel file ./drivers/net/ethernet/chelsio/cxgb4vf/sge.c

and now the friend group, the whole crew, no cap, all of them:

• get_buf_addr(9)
• is_buf_mapped(9)
• need_skb_unmap(9)
• txq_avail(9)
• fl_cap(9)
• fl_starving(9)
• map_skb(9)
• free_tx_desc(9)
• reclaim_completed_tx(9)
• get_buf_size(9)
• free_rx_bufs(9)
• unmap_rx_buf(9)
• ring_fl_db(9)
• set_rx_sw_desc(9)
• refill_fl(9)
• alloc_ring(9)
• sgl_len(9)
• flits_to_desc(9)
• is_eth_imm(9)
• calc_tx_flits(9)
• write_sgl(9)
• ring_tx_db(9)
• inline_tx_skb(9)
• t4vf_eth_xmit(9)
• copy_frags(9)
• t4vf_pktgl_to_skb(9)
• t4vf_pktgl_free(9)
• t4vf_ethrx_handler(9)
• is_new_response(9)
• restore_rx_bufs(9)
• rspq_next(9)
• process_responses(9)
• napi_rx_handler(9)
• t4vf_intr_handler(9)
• sge_rx_timer_cb(9)
• sge_tx_timer_cb(9)
• bar2_address(9)
• t4vf_sge_alloc_rxq(9)
• t4vf_sge_alloc_eth_txq(9)
• t4vf_free_sge_resources(9)
• t4vf_sge_start(9)
• t4vf_sge_stop(9)
• t4vf_sge_init(9)

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ok that's the whole page, nothing skipped, every single one of those (9) cross-refs is up there 👆 go read them, they're literally all connected 💀

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and that's a wrap, bestie 🎀 sign-off time: this lil masterpiece comes from ./drivers/net/ethernet/chelsio... and she's dated October 2026 — iconic behavior honestly, slay 💜🌈