velocity_open(9)

💅 velocity_open(9) — Kernel API Manual 🌸

okay bestie, welcome to the velocity_open(9) page, straight out of the Kernel API Manual ✨ this is the lil' activation callback for the via-velocity driver and honestly? she's lowkey iconic for doing all her setup work only when someone actually needs her 🫶

---

🌈 NAME

velocity_open — the interface activation callback 💫 (yes that's her whole job title, and she ate)

---

🎀 SYNOPSIS

int velocity_open (struct net_device *dev );

---

✨ ARGUMENTS

• dev — the network layer device that's getting opened 🦋 literally the thing being brought to life, no cap

---

💖 DESCRIPTION

So here's the vibe: this gets called when the network layer brings the interface up ⬆️ like, the moment your NIC gets woken from its little nap and told to be a main character 😤

Return value check, bestie, because it matters:

• returns a negative posix error code on failure 😭 (something went wrong, deal with it)
• returns zero on success 👑 (we slayed, we're up)

And here's the part I'm obsessed with: all the ring allocation and set up is done on open for this adapter — like, all of it, right here, at open time 🎀 and the reason is honestly so smart: it's to minimise memory usage when inactive 💜 so when the interface is just chillin' doing nothing, it's not hogging RAM it doesn't need. frugal queen behavior fr fr 💅

---

🦋 SEE ALSO

the whole extended friend group 💖:

• Kernel file ./drivers/net/ethernet/via/via-velocity.c
• mac_get_cam_mask(9)
• mac_set_cam_mask(9)
• mac_set_cam(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_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)

---

that's the whole page, bestie 🫶 tysm for reading, and remember: this lil' beauty lives over at ./drivers/net/ethernet/via, the page is dated October 2026, and she goes by velocity_open(9) 💖 mwah, go open some interfaces ✨💅