t4vf_sge_init(9)

💖 t4vf_sge_init — Kernel API Manual, but make it make sense ✨

okay bestie, so this one's from the Kernel API Manual (section 9, kernel-developer coded) and it's literally just one function that gets your SGE situation cute and ready. nothing more, nothing less. let's get into it 🎀

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✨ NAME ✨

t4vf_sge_init — initialize SGE 🦋

like. that's the whole job. it initializes the SGE. iconic brevity, no notes.

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✨ SYNOPSIS ✨

int t4vf_sge_init(struct adapter *adapter);

one argument, returns an int, that's her whole personality 💅

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✨ ARGUMENTS ✨

• adapter — the adapter 🫶 (yes that's the entire description, she's lowkey mysterious and we respect it)

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✨ DESCRIPTION ✨

so here's the tea: this does the SGE initialization that has to happen every single time after a chip reset. every time. no skipping. it's giving "ritual, not a one-off" 🔥

but — and this is the important part, so pay attention bestie 😭 — there are two things she deliberately does not do:

• she does not initialize any of the queue sets here. nope. instead the driver top-level has to request those individually, one by one, like the main character assigning side quests 👑
• she does not enable DMA here either. that one gets done after the queues have been set up. order matters, don't @ me 💀

so like, this function is the setup girlie, not the whole party planner. she preps the vibe, then the driver top-level handles the rest. periodt. 💜

real talk though: don't assume this does everything for you. queues? not here. DMA? not here. those are separate steps and you'll be sad if you forget 🙈

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✨ SEE ALSO ✨

bestie there are so many friends in this group chat, buckle up 🍨

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

and then the whole squad, in exactly this order: 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), do_gro(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)

forty-two entries and every single one is linked. that's not a SEE ALSO, that's a guest list 💀🎀

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and that's the whole page!! mwah, ily, go init your SGE responsibly 🌸

the footer credits the source over at ./drivers/net/ethernet/chelsio/... and stamps it October 2026, so jot that down in your notes app bestie 🦋💖