ixgbe_disab...ispeed_fiber(9)

💅 ixgbe_disable_tx_laser_multispeed_fiber — a Kernel API Manual moment ✨

okay so bestie, welcome to the Kernel API Manual, and today's main character is ixgbe_disable_tx_laser_multispeed_fiber — a function whose name is lowkey a whole paragraph, but we're gonna slay it together 🫶

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🌸 NAME 🌸

ixgbe_disable_tx_laser_multispeed_fiber — Disable Tx laser</p>. that's it, that's the vibe. short, sweet, and it does exactly what it says on the tin 💅

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✨ SYNOPSIS ✨

void ixgbe_disable_tx_laser_multispeed_fiber (struct ixgbe_hw *hw );

literally one function, one argument, returns nothing. no cap, it's giving "small but mighty" 🦋

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🎀 ARGUMENTS 🎀

• hw — pointer to hardware structure. yes bestie, the actual hardware struct — you're gonna hand it the whole thing and it'll go rummage around in there 🧚

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💜 DESCRIPTION 💜

so here's the tea, bestie: the base drivers may require better control over SFP+ module PHY states. that's the whole reason this function exists, and honestly? valid.

and what does "better control" mean here? it includes selectively shutting down the Tx laser on the PHY — like, just that one laser, very targeted, very demure — which effectively halts physical link 🔥

so yeah. you kill the Tx laser, the physical link goes bye-bye. periodt. that's the entire point, and it's iconic of it honestly 👑

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🔥 SEE ALSO 🔥

the friend group!! the whole 82599 squad shows up here and we're not skipping a single one, okay? 💖

• the actual kernel file, right here: ./drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c
• prot_autoc_read_82599(9)
• prot_autoc_write_82599(9)
• ixgbe_init_phy_ops_82599(9)
• ixgbe_get_link_capabilities_82599(9)
• ixgbe_get_media_type_82599(9)
• ixgbe_stop_mac_link_on_d3_82599(9)
• ixgbe_start_mac_link_82599(9)
• ixgbe_enable_tx_laser_multispeed_fiber(9)
• ixgbe_flap_tx_laser_multispeed_fiber(9)
• ixgbe_set_hard_rate_select_speed(9)
• ixgbe_setup_mac_link_smartspeed(9)
• ixgbe_setup_mac_link_82599(9)
• ixgbe_setup_copper_link_82599(9)
• ixgbe_reset_hw_82599(9)
• ixgbe_fdir_check_cmd_complete(9)
• ixgbe_reinit_fdir_tables_82599(9)
• ixgbe_fdir_enable_82599(9)
• ixgbe_init_fdir_signature_82599(9)
• ixgbe_init_fdir_perfect_82599(9)
• ixgbe_atr_compute_sig_hash_82599(9)
• ixgbe_fdir_add_signature_filter_82599(9)
• ixgbe_atr_compute_perfect_hash_82599(9)
• ixgbe_get_fdirtcpm_82599(9)
• ixgbe_read_analog_reg8_82599(9)
• ixgbe_write_analog_reg8_82599(9)
• ixgbe_start_hw_82599(9)
• ixgbe_identify_phy_82599(9)
• ixgbe_enable_rx_dma_82599(9)
• ixgbe_verify_fw_version_82599(9)
• ixgbe_verify_lesm_fw_enabled_82599(9)
• ixgbe_read_eeprom_buffer_82599(9)
• ixgbe_read_eeprom_82599(9)
• ixgbe_reset_pipeline_82599(9)
• ixgbe_read_i2c_byte_82599(9)
• ixgbe_write_i2c_byte_82599(9)

like, the way that list just keeps going?? 82599 really said "I have friends" and honestly we love that for them 💀🌸

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⭐ bye bestie ⭐

that's the page! this little gem came out of ./drivers/net/ethernet/intel/i..., dated October 2026, and it's serving Kernel API Manual realness in ixgbe_disab...ispeed_fiber(9) form 🦋 ngl you ate that reading session, see you in the next man page 💖✨🎀