set_segment_bits(9)

💅 set_segment_bits(9) — bestie edition 🎀

okay so real talk, this one is from the Kernel API Manual, and it's a tiny little function that does exactly one thing and does it slay. no notes, honestly.

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✨ NAME ✨

set_segment_bits — sets the segment-related bits in the options field. that's it. that's the whole gig. 💖

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🌸 SYNOPSIS 🌸

void set_segment_bits (uint16_t *options , int segment_index , int total
);

like, it returns void because it's not here to give you answers, it's here to do the work. main character energy fr fr. 👑

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🦋 ARGUMENTS 🦋

• options — pointer to the options field. you're handing her a uint16_t * and she's gonna flip bits in it, so bestie… that pointer better be real. 🙈
• segment_index — the index of the current segment. which segment are we on rn? this one knows.
• total — the total number of segments. the whole picture, the big picture, the full count. 💅

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💜 DESCRIPTION 💜

so what does she actually do? she sets the appropriate bits in the options field to indicate whether the current segment is the first one, the last one, or a single segment. that's it!!

first segment? bits set. last segment? bits set. only one segment, so it's first and last at the same time?? iconic, honestly, bits set for that too. 🫶✨

no cap, this is the kind of function that does one small thing perfectly and then dips. we respect her.

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🍓 SEE ALSO 🍓

the whole friend group, gathered for you, in ./drivers/scsi/qla2xxx/qla_sup.c:

• qla29xx_get_flt_layout(9)
• qla29xx_get_fdt_info(9)
• qla29xx_get_flash_region(9)
• set_chunk_bits(9)
• qla29xx_write_optrom_data(9)
• qla29xx_read_optrom_data(9)
• qla29xx_mpi_optrom_data(9)
• qla2x00_lock_nvram_access(9)
• qla2x00_unlock_nvram_access(9)
• qla2x00_nv_write(9)
• qla2x00_nvram_request(9)
• qla2x00_get_nvram_word(9)
• qla2x00_nv_deselect(9)
• qla2x00_write_nvram_word(9)
• qla2x00_clear_nvram_protection(9)
• qla2x00_flash_enable(9)
• qla2x00_flash_disable(9)
• qla2x00_read_flash_byte(9)
• qla2x00_write_flash_byte(9)
• qla2x00_poll_flash(9)
• qla2x00_program_flash_address(9)
• qla2x00_erase_flash(9)
• qla2x00_erase_flash_sector(9)
• qla2x00_get_flash_manufacturer(9)
• qla2x00_get_fcode_version(9)

reading the whole list in one breath is a flex, and you should absolutely attempt it. iykyk. 💀

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🌈 k bye, sign-off 🌈

this little page lives in ./drivers/scsi/qla2xxx, and it's dated October 2026. yeah, the future. she's ahead of her time, obviously. ⭐🦋💖