pldm_verify_header_crc(9)

💖 pldm_verify_header_crc — kernel API manual, bestie edition 💖

okay so real talk, this one lives in the kernel API manual (section 9, iykyk) and it's literally the vibe check for your PLDM firmware header. yes girl, we're checking the CRC. 🎀

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✨ NAME ✨

pldm_verify_header_crc — verify that the CRC in the header matches 💅

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🦋 SYNOPSIS 🦋

int pldm_verify_header_crc (struct pldmfw_priv *data );

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🌸 ARGUMENTS 🌸

• data — pointer to private data. that's it, that's the whole argument. she's low maintenance 👑

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⭐ DESCRIPTION ⭐

so what does she actually do? she calculates the 32-bit CRC using the standard IEEE 802.3 CRC polynomial 🌈 and then compares it to the value stored in the header. that's the entire plot. it's giving "trust but verify" fr fr.

no cap, if the numbers match, we're slaying. if they don't… well, keep reading bestie 😭

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🔥 RETURN 🔥

• zero on success, if the CRC matches 🫶
• -EBADMSG on an invalid CRC 💀

like, that's the whole return contract. zero = good, -EBADMSG = the header said something and the math said "not today". 🙈

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👑 SEE ALSO 👑

the kernel file ./lib/pldmfw/pldmfw.c and honestly her whole friend group:

• pldm_check_fw_space(9)
• pldm_move_fw_offset(9)
• pldm_parse_header(9)
• pldm_check_desc_tlv_len(9)
• pldm_parse_desc_tlvs(9)
• pldm_parse_one_record(9)
• pldm_parse_records(9)
• pldm_parse_components(9)
• pldmfw_free_priv(9)
• pldm_parse_image(9)
• pldmfw_op_pci_match_record(9)
• pldm_find_matching_record(9)
• pldm_send_package_data(9)
• pldm_send_component_tables(9)
• pldm_flash_components(9)
• pldm_finalize_update(9)
• pldmfw_flash_image(9)

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and that's the page!! this little icon was brought to you by ./lib/pldmfw, dated October 2026 — crc-verified, header-approved, periodt 💜✨🧚