STRUCT ETHTOOL_RXFH_PARAM(9)

✨ NAME ✨

okay so bestie, this is the struct ethtool_rxfh_param(9) page from the Kernel API Manual, and it’s literally all about RXFH (RSS) parameters. No cap, it’s the struct that holds the RXFH/RSS parameter vibes 💖

🦋 SYNOPSIS 🦋

here’s the whole struct, copied exactly because we do not mess with code:

struct ethtool_rxfh_param {
    u8 hfunc;
    u32 indir_size;
    u32 *indir;
    u32 key_size;
    u8 *key;
    u32 rss_context;
    u8 rss_delete;
    u8 input_xfrm;
 };

💅 Members 💅

• hfunc — defines the current RSS hash function used by HW (or the one to be set to). Valid values are one of the ETH_RSS_HASH_*. slay, but keep it in the enum family ✨
• indir_size — On SET, it’s the array size of the user buffer for the indirection table, which may be zero, or ETH_RXFH_INDIR_NO_CHANGE. On GET (read from the driver), it’s the array size of the hardware indirection table. two modes, two meanings, iykyk 🎀
• indir — the indirection table of indir_size entries. 🦋
• key_size — On SET, the array size of the user buffer for the hash key, which may be zero. On GET (read from the driver), the size of the hardware hash key. 🔑
• key — the hash key of key_size bytes. keykeykey, literally 💜
• rss_context — RSS context identifier. Context 0 is the default for normal traffic; other contexts can be referenced as the destination for RX flow classification rules. On SET, ETH_RXFH_CONTEXT_ALLOC is used to allocate a new RSS context; on return this field will contain the ID of the newly allocated context. main character context energy 👑
• rss_delete — set to non-ZERO to remove the rss_context context. non-ZERO means delete, bestie 💀
• input_xfrm — defines how the input data is transformed. Valid values are one of RXH_XFRM_*. transformative, honestly ✨

🌈 SEE ALSO 🌈

so many friends, all here, no gatekeeping:

• Kernel file ./include/linux/ethtool.h
• enum ethtool_phys_id_state(9)
• struct kernel_ethtool_ringparam(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_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)

okay that’s the whole glow-up, bestie 💖 this page’s source/version is ./include/linux, dated October 2026, and it’s literally struct ethtool_rxfh_param(9) — slay and stay hydrated 🫶✨