STRUCT KERNEL_ETHTOOL_RINGPARAM(9)

💅 struct kernel_ethtool_ringparam(9) — Kernel API Manual, bestie edition 🎀

okay so picture this: you're deep in the Kernel API Manual, right, and you hit struct kernel_ethtool_ringparam and you're like "what is this even for" — no worries, I got you. This struct is literally the whole RX/TX ring configuration vibe. every knob you'd wanna twist on your rings lives here and she's iconic for it. ✨

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🌸 NAME 🌸

struct kernel_ethtool_ringparam — RX/TX ring configuration, aka the blueprint for how your rings are set up 🦋

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✨ SYNOPSIS ✨

so here's the shape of her, exactly as she is, no edits, periodt:

struct kernel_ethtool_ringparam {
    u32 rx_buf_len;
    u8 tcp_data_split;
    u8 tx_push;
    u8 rx_push;
    u32 cqe_size;
    u32 tx_push_buf_len;
    u32 tx_push_buf_max_len;
    u32 hds_thresh;
    u32 hds_thresh_max;
 };

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💖 Members 💖

okay bestie, member-by-member, let's go:

• rx_buf_len — the current length of the buffers chilling on the rx ring. that's it, that's the field. 🌈
• tcp_data_split — scatter packet headers and data into separate buffers. splitting the fit, honestly. 🫶
• tx_push — the flag of tx push mode. it's giving "push it, push it". 🔥
• rx_push — the flag of rx push mode. matching energy, we love a duo. 💜
• cqe_size — size of the TX/RX completion queue event. sizes matter, iykyk. ⭐
• tx_push_buf_len — size of the TX push buffer. how much room she's got. 🎀
• tx_push_buf_max_len — maximum allowed size of the TX push buffer. the ceiling, the limit, the "don't even try it". 🦋
• hds_thresh — packet size threshold for header data split (HDS). crossing this line = split time. 👑
• hds_thresh_max — maximum supported setting for hds_threshold. the absolute most, no cap. 💅

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🧚 SEE ALSO 🧚

the whole friend group, fr fr — go say hi:

• the Kernel file ./include/linux/ethtool.h
• enum ethtool_phys_id_state(9)
• enum ethtool_supported_ring_param(9)
• ethtool_rxfh_indir_default(9)
• struct ethtool_rxfh_context(9)
• ethtool_link_ksettings_zero_link_mode(9)
• ethtool_link_ksettings_add_link_mode(9)
• ethtool_link_ksettings_del_link_mode(9)
• ethtool_link_ksettings_test_link_mode(9)
• ethtool_intersect_link_masks(9)
• struct ethtool_phy_stats(9)
• struct ethtool_pause_stats(9)
• struct ethtool_fec_hist_range(9)
• struct ethtool_fec_stats(9)
• struct ethtool_rmon_hist_range(9)
• struct ethtool_rmon_stats(9)
• struct ethtool_ts_stats(9)
• struct ethtool_module_eeprom(9)
• struct ethtool_module_power_mode_params(9)
• struct ethtool_mm_state(9)
• struct ethtool_mm_cfg(9)
• struct ethtool_mm_stats(9)
• struct ethtool_mmsv_ops(9)
• struct ethtool_mmsv(9)
• struct ethtool_rxfh_param(9)
• struct ethtool_rxfh_fields(9)
• struct kernel_ethtool_ts_info(9)
• struct ethtool_ops(9)
• struct ethtool_netdev_state(9)
• struct ethtool_phy_ops(9)
• ethtool_set_ethtool_phy_ops(9)
• ethtool_params_from_link_mode(9)
• ethtool_get_phc_vclocks(9)
• ethtool_mm_frag_size_add_to_min(9)
• ethtool_mm_frag_size_min_to_add(9)
• ethtool_get_ts_info_by_layer(9)
• ethtool_sprintf(9)
• ethtool_puts(9)
• ethtool_cpy(9)

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and that's the whole page, bestie — you ate that 💅✨

little sign-off for the girlies who read the fine print: this one lives in ./include/linux, and she's dated October 2026. mwah, go configure some rings 🍓💜