ice_get_nvm_css_hdr_len(9)

💅 ice_get_nvm_css_hdr_len(9) — the kernel API manual, but make it make sense 🎀

okay so bestie, we're in the <cyan>Kernel API Manual</cyan> and today's main character is ice_get_nvm_css_hdr_len. yes it's a mouthful. no you cannot shorten it. it's giving "intel ice driver NVM internals" and honestly? iconic. let's get into it 🦋

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✨ NAME ✨

ice_get_nvm_css_hdr_len — literally just reads the CSS header length out of the NVM CSS header 🌸 no cap, that's the whole job.

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✨ SYNOPSIS ✨

int ice_get_nvm_css_hdr_len (struct ice_hw *hw , enum ice_bank_select
bank , u32 *hdr_len );

three args, one int back. that's it. keep the squiggles where they are, they're load-bearing 💅

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✨ ARGUMENTS ✨

• hw — pointer to the HW struct 🫶 your whole hardware situation lives in here.
• bank — whether to read from the active or the inactive flash bank 👀 yes you gotta pick. choose wisely.
• hdr_len — storage for header length in words 📝 that's words, not bytes, don't come for me.

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✨ DESCRIPTION ✨

so here's the vibe: it reads the CSS header length from the NVM CSS header, then adds the Authentication header size on top, and then converts the whole thing to words ✨. read it, add it, convert it. three steps, zero drama (well, zero extra drama).

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✨ RETURN ✨

• zero on success 🎉 slay
• a negative error code on failure 😭 that's it, that's the contract

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✨ SEE ALSO ✨

the kernel file we're living in: ./drivers/net/ethernet/intel/ice/ice_nvm.c — and the whole friend group, fr fr:

• ice_aq_read_nvm(9)
• ice_read_flat_nvm(9)
• ice_aq_update_nvm(9)
• ice_aq_erase_nvm(9)
• ice_read_sr_word(9)
• ice_acquire_nvm(9)
• ice_release_nvm(9)
• ice_get_flash_bank_offset(9)
• ice_read_flash_module(9)
• ice_read_nvm_module(9)
• ice_read_nvm_sr_copy(9)
• ice_read_netlist_module(9)
• ice_get_pfa_module_tlv(9)
• ice_read_pba_string(9)
• ice_get_nvm_ver_info(9)
• ice_get_inactive_nvm_ver(9)
• ice_get_orom_civd_data(9)
• ice_get_orom_ver_info(9)
• ice_get_inactive_orom_ver(9)
• ice_get_netlist_info(9)
• ice_get_inactive_netlist_ver(9)
• ice_discover_flash_size(9)
• ice_read_sr_pointer(9)
• ice_read_sr_area_size(9)
• ice_determine_active_flash_banks(9)
• ice_determine_css_hdr_len(9)
• ice_init_nvm(9)
• ice_nvm_validate_checksum(9)
• ice_nvm_write_activate(9)
• ice_aq_nvm_update_empr(9)

like, the entire roster 😭 they all live in ./drivers/net/ethernet/intel/ice. go say hi.

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okay that's the page!! sourced straight from ./drivers/net/ethernet/intel/ice, dated October 2026, and titled ice_get_nvm_css_hdr_len(9) — mwah 💋 thanks for reading bestie, go read some flash banks 🧚‍♀️✨