wx_change_mtu(9)

💅 wx_change_mtu — the kernel API manual, bestie edition

okay so real quick, before we dive in: this is a page from the Kernel API Manual (section 9, kernel land, iykyk) and it's literally all about one lil' function. let's go 🫶

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✨ NAME ✨

wx_change_mtu — Change the Maximum Transfer Unit

like... that's the whole vibe. it changes the MTU. iconic behavior honestly.

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🌸 SYNOPSIS 🌸

int wx_change_mtu (struct net_device *netdev , int new_mtu );

yes bestie, exactly like that, spaces and all. don't @ me, that's how it's written 😭

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🎀 ARGUMENTS 🎀

• netdev — the network interface device structure. your actual lil' network baby, the thing you're poking at 🦋
• new_mtu — the new value for maximum frame size. the glow-up number you're assigning ✨

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💖 DESCRIPTION 💖

Returns 0 on success, negative on failure. that's it. that's the whole description. no cap, she's a short queen 👑

so when your call comes back 0? slay, it worked. comes back negative? it's giving failure, go check yourself 🙈

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🔥 SEE ALSO 🔥

okay so this is the part where the manpage just dumps the entire friend group on you. like a group chat roster. every single one, no skips:

the kernel file:

• ./drivers/net/ethernet/wangxun/libwx/wx_hw.c ⭐

and then, in order:

• wx_irq_disable(9)
• wx_mng_present(9)
• wx_release_sw_sync(9)
• wx_acquire_sw_sync(9)
• wx_host_interface_command(9)
• wx_read_ee_hostif_data(9)
• wx_read_ee_hostif(9)
• wx_read_ee_hostif_buffer(9)
• wx_init_eeprom_params(9)
• wx_get_mac_addr(9)
• wx_set_rar(9)
• wx_clear_rar(9)
• wx_clear_vmdq(9)
• wx_init_uta_tables(9)
• wx_init_rx_addrs(9)
• wx_write_uc_addr_list(9)
• wx_mta_vector(9)
• wx_set_mta(9)
• wx_update_mc_addr_list(9)
• wx_write_mc_addr_list(9)
• wx_set_mac(9)
• wx_set_rxpba(9)
• wx_hpbthresh(9)
• wx_lpbthresh(9)
• wx_pbthresh_setup(9)
• wx_disable_sec_rx_path(9)
• wx_enable_sec_rx_path(9)
• wx_configure_tx(9)
• wx_configure_rx(9)
• wx_disable_pcie_master(9)
• wx_stop_adapter(9)
• wx_get_pcie_msix_counts(9)
• wx_init_rss_key(9)
• wx_find_vlvf_slot(9)
• wx_set_vlvf(9)
• wx_set_vfta(9)
• wx_clear_vfta(9)
• wx_update_stats(9)
• wx_clear_hw_cntrs(9)
• wx_start_hw(9)

forty of them. that's not a typo, that's a whole squad 💀💜

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quick reminder bestie: everything above that starts with wx_ is a manpage in section 9, so go read them with the section number or the man command will ghost you 😭

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and that's the page!! 🌈 this lil' beauty comes from ./drivers/net/ethernet/wangxun... (that's the source/version tag, she's long, she's beautiful, she got truncated mid-path) and it's dated October 2026. signed, sealed, wx_change_mtu(9) — mwah 💋🎀✨