e1000e_set_fc_watermarks(9)

💅 e1000e_set_fc_watermarks(9) — like, the whole glow-up

Okay bestie, welcome to the Kernel API Manual ✨ — this is the page for e1000e_set_fc_watermarks(9), and no cap, it's a little guy with a big job: it's the one that sets the flow control watermarks. Let's get into it 🫶

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🌸 NAME

e1000e_set_fc_watermarks — sets the flow control high/low watermarks. That's the whole vibe. Short, sweet, iconic. 💖

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✨ SYNOPSIS

s32 e1000e_set_fc_watermarks (struct e1000_hw *hw );

Notice the return type: s32. Yes, she returns a signed 32-bit value, she's that girl. 🎀

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🎯 ARGUMENTS

• hw — pointer to the HW structure. That's it, that's the only arg. Just hand her a pointer to your hardware struct and let her cook. 👑

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🦋 DESCRIPTION

So here's the tea: this function sets the flow control high/low threshold (watermark) registers. 💅

And there's a bonus clause — if flow control XON frame transmission is enabled, then it sets XON frame transmission as well. Two for the price of one, fr fr. 🔥

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🌈 SEE ALSO

The kernel file to go look at is literally right here: ./drivers/net/ethernet/intel/e1000e/mac.c — go touch some source code, bestie 📂

And now, the friend group. These are all the (9) functions that keep this one company. No skipping, we're listing every single one because they all matter 💜:

• e1000e_get_bus_info_pcie(9)
• e1000_set_lan_id_multi_port_pcie(9)
• e1000_set_lan_id_single_port(9)
• e1000_clear_vfta_generic(9)
• e1000_write_vfta_generic(9)
• e1000e_init_rx_addrs(9)
• e1000_check_alt_mac_addr_generic(9)
• e1000e_rar_set_generic(9)
• e1000_hash_mc_addr(9)
• e1000e_update_mc_addr_list_generic(9)
• e1000e_clear_hw_cntrs_base(9)
• e1000e_check_for_copper_link(9)
• e1000e_check_for_fiber_link(9)
• e1000e_check_for_serdes_link(9)
• e1000_set_default_fc_generic(9)
• e1000e_setup_link_generic(9)
• e1000_commit_fc_settings_generic(9)
• e1000_poll_fiber_serdes_link_generic(9)
• e1000e_setup_fiber_serdes_link(9)
• e1000e_config_collision_dist_generic(9)
• e1000e_force_mac_fc(9)
• e1000e_config_fc_after_link_up(9)
• e1000e_get_speed_and_duplex_copper(9)
• e1000e_get_speed_and_duplex_fiber_serdes(9)
• e1000e_get_hw_semaphore(9)
• e1000e_put_hw_semaphore(9)
• e1000e_get_auto_rd_done(9)
• e1000e_valid_led_default(9)
• e1000e_id_led_init_generic(9)
• e1000e_setup_led_generic(9)
• e1000e_cleanup_led_generic(9)
• e1000e_blink_led_generic(9)
• e1000e_led_on_generic(9)
• e1000e_led_off_generic(9)
• e1000e_set_pcie_no_snoop(9)
• e1000e_disable_pcie_master(9)
• e1000e_reset_adaptive(9)
• e1000e_update_adaptive(9)

Like, that's a lot of siblings, but every single one of them is serving. 🧚💫

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🎀 Sign-off

That's the page, bestie! 🌸 Source path on the footer is ./drivers/net/ethernet/intel/e... (yes, it got cut off, we don't gatekeep but the terminal does 😭) and the date stamp is October 2026 — so this info is fresh, fr fr. Go set those watermarks, you've got this! 💖🔥👑💅