STRUCT ETHTOOL_RXFH_CONTEXT(9)

✨ struct ethtool_rxfh_context(9) ✨

okay so bestie, this is a page straight out of the Kernel API Manual, section 9, and it's all about struct ethtool_rxfh_context — literally the little config blob that holds a custom RSS context configuration. if you've ever wanted to tell your NIC "no babe, I pick the indirection table", this is the struct you'd be gossiping with 💅

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🎀 NAME 🎀

struct ethtool_rxfh_context — a custom RSS context configuration 🦋

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🌸 SYNOPSIS 🌸

here's the whole glow-up, verbatim, no edits, she's perfect:

struct ethtool_rxfh_context {
    u32 indir_size;
    u32 key_size;
    u32 indir_user_size;
    u16 priv_size;
    u8 hfunc;
    u8 input_xfrm;
    u8 indir_configured:1;
    u8 key_configured:1;
 };

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💖 MEMBERS 💖

okay let's meet the cast, one by one, no skipping, they all matter:

• indir_size — the number of u32 entries in the indirection table. that's it, that's the count 🔢
• key_size — size of the hash key, in bytes. measured in bytes, not vibes 🗝️
• indir_user_size — the number of user-provided entries for the indirection table. lowkey important, that "user provided" part is doing work 👀
• priv_size — size of the driver private data, in bytes. driver's own little stash 🎒
• hfunc — the RSS hash function identifier. it's one of the ETH_RSS_HASH_* values, periodt 🌈
• input_xfrm — defines how the input data is transformed. valid values are one of RXH_XFRM_* 🔄
• indir_configured — indir has been specified (at create time or subsequently). note she's a u8 indir_configured:1; bitfield bestie, one whole bit of truth 🫶
• key_configured — hkey has been specified (at create time or subsequently). also a u8 key_configured:1; bitfield, also one bit, also not playing games ✅

ngl, those last two are giving "did you actually fill this in or are we lying to ourselves" energy — they only track whether it was specified, at create time or subsequently. that's the whole claim, don't read more into it 🙈

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🔥 SEE ALSO 🔥

the friend group is large, so buckle up. first, the source file herself: Kernel file ./include/linux/ethtool.h. then:

• enum ethtool_phys_id_state(9)
• struct kernel_ethtool_ringparam(9)
• enum ethtool_supported_ring_param(9)
• ethtool_rxfh_indir_default(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)

like I said. huge friend group. all of them ate tho 👑

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and that's the whole page, bestie — no crumbs left behind 🍓 this cutie lives in ./include/linux, and this particular edition is dated October 2026, filed under struct ethtool_rxfh_context(9). go forth and configure your RSS context with main character energy 💜✨