get_buf_size(9)

💅 get_buf_size — a whole manpage, bestie

okay so first things first, we're in the Kernel API Manual (section 9, the kernel-API girlies) and this page is called get_buf_size. That's the whole header situation, consider it handled 🎀

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✨ NAME ✨

get_buf_size — literally just returns the size of an RX Free List buffer. that's it. that's the function. no cap 💖

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✨ SYNOPSIS ✨

int get_buf_size (const struct adapter *adapter , const struct
rx_sw_desc *sdesc );

copy it exactly like that, spacing and all, she's sensitive 🙈

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✨ ARGUMENTS ✨

• adapter — a pointer to the associated adapter. like, the adapter she's attached to. her plus-one 🫶
• sdesc — a pointer to the software buffer descriptor. the sw desc in question. iconic behavior honestly ✨

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✨ SEE ALSO ✨

bestie there is a whole friend group here, and you're gonna meet all of them. no skipping, i'm serious, this is the roster 🌈

• Kernel file ./drivers/net/ethernet/chelsio/cxgb4vf/sge.c — yes, that's the actual file, go look, she lives there 💅
• 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)
• 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)
• t4vf_sge_init(9)

like, the whole sge.c cast list. read them all, they're all main characters 👑

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ngl this page is short and sweet — which means there is zero excuse for not remembering that get_buf_size returns the size of an RX Free List buffer. periodt. 💀

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and that's the vibe check, done ✅ this lil page came from the ./drivers/net/ethernet/chelsio... source, dated October 2026, and she answers to get_buf_size(9) — mwah, love her, bye 🦋💜