igb_mta_set(9)

💅 igb_mta_set(9) — the Kernel API Manual, bestie edition 🎀

okay so real talk, this page lives in the Kernel API Manual and it's about igb_mta_set — yes that's the whole name, and yes it's iconic. it sets the multicast filter table address ✨ let's get into it.

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🌸 NAME 🌸

igb_mta_set — Set multicast filter table address 💖 literally what it says on the tin, no cap.

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✨ SYNOPSIS ✨

void igb_mta_set (struct e1000_hw *hw , u32 hash_value );

it returns void, so like… nothing comes back. it just does the thing. main character energy, honestly 👑

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🦋 ARGUMENTS 🦋

• hw — pointer to the HW structure 🫶 your whole hardware situation, handed over by reference.
• hash_value — determines the MTA register and bit to set 🎯 it's the little map that says "this register, this bit, go."

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🌈 DESCRIPTION 🌈

okay so picture this: the multicast table address is a whole register array of 32-bit registers 🧚 like a lil row of boxes, all 32-bit, all chilling.

hash_value is the thing that figures out which register the bit lives in, and then the routine does the cute little dance:

1. read the current value 👀
2. OR the new bit in, so nothing gets lost 💅
3. write the new value straight back into the register ✅

read → OR → write. that's the whole vibe. it's giving read-modify-write and honestly? slay.

ngl there's no drama here — no return value, no error path mentioned, just a clean lil bit-set. but keep hash_value correct or you'll be poking the wrong bit, and that's a whole mess 😭

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💜 SEE ALSO 💜

• Kernel file ./drivers/net/ethernet/intel/igb/e1000_mac.c — go read the source, bestie, iykyk 📖

and the whole friend group of related calls (yes, all of them, we're not skipping anyone, periodt):

• igb_get_bus_info_pcie(9)
• igb_clear_vfta(9)
• igb_write_vfta(9)
• igb_init_rx_addrs(9)
• igb_find_vlvf_slot(9)
• igb_vfta_set(9)
• igb_check_alt_mac_addr(9)
• igb_rar_set(9)
• igb_hash_mc_addr(9)
• igb_i21x_hw_doublecheck(9)
• igb_update_mc_addr_list(9)
• igb_clear_hw_cntrs_base(9)
• igb_check_for_copper_link(9)
• igb_setup_link(9)
• igb_config_collision_dist(9)
• igb_set_fc_watermarks(9)
• igb_set_default_fc(9)
• igb_force_mac_fc(9)
• igb_config_fc_after_link_up(9)
• igb_get_speed_and_duplex_copper(9)
• igb_get_hw_semaphore(9)
• igb_put_hw_semaphore(9)
• igb_get_auto_rd_done(9)
• igb_valid_led_default(9)
• igb_id_led_init(9)
• igb_cleanup_led(9)
• igb_blink_led(9)
• igb_led_off(9)
• igb_disable_pcie_master(9)
• igb_validate_mdi_setting(9)
• igb_write_8bit_ctrl_reg(9)
• igb_enable_mng_pass_thru(9)

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💀 one (1) warning-free page, no bugs listed, no deprecated nonsense to warn you about — enjoy the peace while it lasts 🙈

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and that's the page!! 🎀 from ./drivers/net/ethernet/intel/igb, dated October 2026 — mwah, go set some multicast bits, bestie 🫶💖