mac_set_cam(9)

💅 mac_set_cam(9) — ok so this is a page from the Kernel API Manual, bestie

Hey hi hello, welcome to mac_set_cam(9), a tiny little function from the Linux kernel that you literally cannot stop thinking about once you get it. It lives in the Kernel API Manual, it's a 9 (kernel API) page, and it's giving "small but crucial." ✨

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🌸 NAME 🌸

mac_set_cam — the one that sets CAM data, fr fr

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🎀 SYNOPSIS 🎀

void mac_set_cam (struct mac_regs __iomem *regs , int idx , const u8
*addr );

That's the whole signature, no cap. Returns void — it does the thing, it doesn't hand you a receipt. 💅

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🦋 ARGUMENTS 🦋

• regs — the register block of this velocity. Like, this specific velocity's registers. Not somebody else's. Respect the boundaries 🫶
• idx — the Cam index. That's your little parking spot number.
• addr — 2 or 6 bytes of CAM data. Two bytes? Six bytes? Both valid, icon behavior.

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💖 DESCRIPTION 💖

Load an address or vlan tag into a CAM. That's it, that's the whole gig. Short king of a description but it does exactly what it says on the tin. ✨

It's lowkey iconic how a four-line manpage can still be this useful. Slay.

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🌈 SEE ALSO 🌈

Squad list below, in order, all of them, nobody left behind 😭💜

• mac_get_cam_mask(9)
• mac_set_cam_mask(9)
• mac_wol_reset(9)
• get_chip_name(9)
• velocity_set_int_opt(9)
• velocity_set_bool_opt(9)
• velocity_get_options(9)
• velocity_init_cam_filter(9)
• velocity_rx_reset(9)
• velocity_get_opt_media_mode(9)
• safe_disable_mii_autopoll(9)
• enable_mii_autopoll(9)
• velocity_mii_read(9)
• mii_check_media_mode(9)
• velocity_mii_write(9)
• set_mii_flow_control(9)
• mii_set_auto_on(9)
• velocity_set_media_mode(9)
• velocity_print_link_status(9)
• enable_flow_control_ability(9)
• velocity_soft_reset(9)
• velocity_set_multi(9)
• mii_init(9)
• setup_queue_timers(9)
• setup_adaptive_interrupts(9)
• velocity_init_registers(9)
• velocity_init_dma_rings(9)
• velocity_alloc_rx_buf(9)
• velocity_free_rd_ring(9)
• velocity_init_rd_ring(9)
• velocity_init_td_ring(9)
• velocity_free_dma_rings(9)
• velocity_free_tx_buf(9)
• velocity_free_td_ring(9)
• velocity_error(9)
• velocity_tx_srv(9)
• velocity_rx_csum(9)
• velocity_rx_copy(9)
• velocity_iph_realign(9)
• velocity_receive_frame(9)
• velocity_rx_srv(9)
• velocity_intr(9)
• velocity_open(9)
• velocity_shutdown(9)
• velocity_change_mtu(9)
• velocity_poll_controller(9)
• velocity_mii_ioctl(9)
• velocity_ioctl(9)
• velocity_get_stats(9)
• velocity_close(9)
• velocity_xmit(9)
• velocity_init_info(9)
• velocity_get_pci_info(9)
• velocity_get_platform_info(9)
• velocity_print_info(9)
• velocity_probe(9)
• velocity_remove(9)
• wol_calc_crc(9)
• velocity_set_wol(9)
• velocity_save_context(9)
• velocity_restore_context(9)
• velocity_ethtool_up(9)
• velocity_ethtool_down(9)
• velocity_init_module(9)
• velocity_cleanup_module(9)

Kernel file to peek at if you're feeling nosy 👀:

./drivers/net/ethernet/via/via-velocity.c

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ok that's the whole page, you ate that, go read a driver or something 💜

sign-off szn 🎀 — this one comes from ./drivers/net/ethernet/via, dated October 2026, and it's filed under mac_set_cam(9) in the Kernel API Manual. bye bestie, ily, drink water 💖