STRUCT ETHTOOL_TCPIP6_SPEC(9)

💖 struct ethtool_tcpip6_spec(9) 💖

okay so this is a page straight out of the Kernel API Manual, and bestie, it's literally the blueprint for describing a network flow. it's giving "who are you talking to and on what port" energy, and honestly? we're obsessed. 💅

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✨ NAME ✨

struct ethtool_tcpip6_spec — the flow specification for TCP/IPv6 etc. no cap, that's the whole vibe. 🦋

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🎀 SYNOPSIS 🎀

here's the whole struct, exactly as it lives, don't touch a single character:

struct ethtool_tcpip6_spec {
    __be32 ip6src[4];
    __be32 ip6dst[4];
    __be16 psrc;
    __be16 pdst;
    __u8 tclass;
 };

look at her. five members. perfect. 🌸

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🧚 Members 🧚

so let's meet the cast, one by one:

• ip6src — the source host 🫶 like, where the packets are coming from, bestie.
• ip6dst — the destination host ✨ where they're headed. main character destination energy.
• psrc — the source port 💌
• pdst — the destination port 💌
• tclass — the Traffic Class 👑 yes, that's its actual name, capital T capital C, we respect it.

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🌈 Description 🌈

this bad boy can be used to specify a TCP/IPv6, UDP/IPv6 or SCTP/IPv6 flow. that's it, that's the whole description, and honestly it ate. 🔥

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⭐ SEE ALSO ⭐

okay this list is long long, but every single one is here because we don't skip anyone in this house. first up, the source file:

• Kernel file ./include/uapi/linux/ethtool.h

and now the whole extended family, no cap:

• struct ethtool_cmd(9)
• struct ethtool_drvinfo(9)
• struct ethtool_wolinfo(9)
• struct ethtool_regs(9)
• struct ethtool_eeprom(9)
• struct ethtool_eee(9)
• struct ethtool_modinfo(9)
• struct ethtool_coalesce(9)
• struct ethtool_ringparam(9)
• struct ethtool_channels(9)
• struct ethtool_pauseparam(9)
• enum ethtool_stringset(9)
• enum ethtool_mac_stats_src(9)
• enum ethtool_module_power_mode_policy(9)
• enum ethtool_module_power_mode(9)
• enum ethtool_c33_pse_ext_state(9)
• enum ethtool_c33_pse_ext_substate_mr_mps_valid(9)
• enum ethtool_c33_pse_ext_substate_error_condition(9)
• enum ethtool_c33_pse_ext_substate_mr_pse_enable(9)
• enum ethtool_c33_pse_ext_substate_option_detect_ted(9)
• enum ethtool_c33_pse_ext_substate_option_vport_lim(9)
• enum ethtool_c33_pse_ext_substate_ovld_detected(9)
• enum ethtool_c33_pse_ext_substate_power_not_available(9)
• enum ethtool_c33_pse_ext_substate_short_detected(9)
• enum ethtool_pse_types(9)
• enum ethtool_c33_pse_admin_state(9)
• enum ethtool_c33_pse_pw_d_status(9)
• enum ethtool_podl_pse_admin_state(9)
• enum ethtool_podl_pse_pw_d_status(9)
• enum ethtool_mm_verify_status(9)
• enum ethtool_module_fw_flash_status(9)
• struct ethtool_gstrings(9)
• struct ethtool_sset_info(9)
• enum ethtool_test_flags(9)
• struct ethtool_test(9)
• struct ethtool_stats(9)
• struct ethtool_perm_addr(9)
• struct ethtool_tcpip4_spec(9)
• struct ethtool_ah_espip4_spec(9)
• struct ethtool_usrip4_spec(9)
• struct ethtool_ah_espip6_spec(9)
• struct ethtool_usrip6_spec(9)
• struct ethtool_flow_ext(9)
• struct ethtool_rx_flow_spec(9)
• struct ethtool_rxnfc(9)
• struct ethtool_rxfh_indir(9)
• struct ethtool_rxfh(9)
• struct ethtool_rx_ntuple_flow_spec(9)
• struct ethtool_rx_ntuple(9)
• struct ethtool_dump(9)
• struct ethtool_get_features_block(9)
• struct ethtool_gfeatures(9)
• struct ethtool_set_features_block(9)
• struct ethtool_sfeatures(9)
• struct ethtool_ts_info(9)
• struct ethtool_per_queue_op(9)
• struct ethtool_fecparam(9)
• enum ethtool_fec_config_bits(9)
• struct ethtool_link_settings(9)
• enum phy_upstream(9)

sixty whole entries, we counted, we love a thorough queen. 👑

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💀 real talk: this page lives in ./include/uapi/linux, it's dated October 2026, and the whole thing is filed under struct ethtool_tcpip6_spec(9). that's the footer, bestie — consider it your little receipt. 🧾💖

stay flowy, go read the other sixty pages, ily, bye! 🫶✨🎀