ethtool_inte...t_link_masks(9)

✨ ethtool_intersect_link_masks — the Kernel API Manual moment ✨

okay so this one lives in the Kernel API Manual, bestie, and it's honestly such a clean little function. no drama, no side quests, just two link masks meeting and finding their common ground 🫶

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💖 NAME

ethtool_intersect_link_masks — give it two link masks and it ANDs them together. that's it. that's the whole vibe. periodt 💅

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🌸 SYNOPSIS

void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst,
                                  struct ethtool_link_ksettings *src);

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🎀 ARGUMENTS

• dst — the first mask, and also literally where the result gets stored. it's giving main character energy because it goes in AND comes out changed 👑
• src — the second mask, the one we're intersecting with. support role but essential, ngl 💜

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🦋 DESCRIPTION

so picture this: you've got two link mode masks, right? this function ANDs them together and saves the result in dst. no cap, that's the entire plot 😭 it's a bitwise intersection and honestly it ate.

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🌈 SEE ALSO

like, the whole extended friend group 💖 all of these are chillin' in the 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)
• 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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bestie this is a void function so there's no return value to obsess over — nothing comes back, the result just lives in dst ✨

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and that's the whole page, mwah 💋 shipped straight out of ./include/linux, dated October 2026 — go forth and intersect those masks, ily 🧚💜