netif_set_tso_max_size(9)

💅 netif_set_tso_max_size(9) — Kernel API Manual, bestie 💅

✨ NAME ✨

netif_set_tso_max_size — set the max size of TSO frames supported. That’s the whole name, no cap. 💖

🎀 SYNOPSIS 🎀

okay so here’s the exact signature, copy it character-for-character bestie:

void netif_set_tso_max_size (struct net_device *dev , unsigned int size
);

🦋 ARGUMENTS 🦋

Two arguments, both iconic:

• dev — netdev to update. The device you’re updating, periodt. 💅
• size — max skb->len of a TSO frame. Yes, that exact field. 🔥

🌸 DESCRIPTION 🌸

Set the limit on the size of TSO super-frames the device can handle. The way that works: unless explicitly set, the stack will assume the value of GSO_LEGACY_MAX_SIZE. That’s the default vibe check, fr fr. 👑

🌈 SEE ALSO 🌈

Kernel file ./net/core/dev.c — and literally the whole (9) friend group, no skips:

dev_add_pack(9), __dev_remove_pack(9),
dev_remove_pack(9), dev_get_iflink(9), dev_fill_metadata_dst(9),
netdev_napi_by_id_lock(9), __dev_get_by_name(9), dev_get_by_name_rcu(9),
netdev_get_by_name(9), __dev_get_by_index(9), dev_get_by_index_rcu(9),
netdev_get_by_index(9), dev_get_by_napi_id(9),
netdev_get_by_index_lock(9), netdev_get_name(9), dev_getbyhwaddr_rcu(9),
dev_getbyhwaddr(9), netdev_get_by_flags_rcu(9), dev_valid_name(9),
__dev_alloc_name(9), dev_alloc_name(9), dev_get_alias(9),
netdev_features_change(9), __netdev_notify_peers(9),
netdev_notify_peers(9), dev_disable_gro_hw(9),
register_netdevice_notifier(9), unregister_netdevice_notifier(9),
register_netdevice_notifier_net(9),
unregister_netdevice_notifier_net(9), call_netdevice_notifiers_info(9),
call_netdevice_notifiers_info_robust(9), call_netdevice_notifiers(9),
call_netdevice_notifiers_mtu(9), dev_forward_skb(9),
dev_nit_active_rcu(9), netif_setup_tc(9),
netif_set_real_num_rx_queues(9), netif_set_real_num_queues(9),
netif_set_tso_max_segs(9), netif_inherit_tso_max(9),
netif_get_num_default_rss_queues(9), netif_device_detach(9),
netif_device_attach(9), dev_loopback_xmit(9), __dev_queue_xmit(9),
rps_flow_is_active(9), rps_may_expire_flow(9), __netif_rx(9),
netif_rx(9), netdev_is_rx_handler_busy(9),
netdev_rx_handler_register(9), netdev_rx_handler_unregister(9),
netif_receive_skb_core(9), netif_receive_skb(9),
netif_receive_skb_list(9), __napi_schedule(9), napi_schedule_prep(9),
__napi_schedule_irqoff(9), netif_threaded_enable(9),
netif_queue_set_napi(9), napi_disable(9), napi_enable(9),
netdev_has_upper_dev(9), netdev_has_upper_dev_all_rcu(9),
netdev_has_any_upper_dev(9), netdev_master_upper_dev_get(9),
netdev_has_any_lower_dev(9), netdev_upper_get_next_dev_rcu(9),
netdev_lower_get_next_private(9), netdev_lower_get_next_private_rcu(9),
netdev_lower_get_next(9), netdev_lower_get_first_private_rcu(9),
netdev_master_upper_dev_get_rcu(9), netdev_upper_dev_link(9),
netdev_master_upper_dev_link(9), netdev_upper_dev_unlink(9),
netdev_bonding_info_change(9), netdev_get_xmit_slave(9),
netdev_sk_get_lowest_dev(9), netdev_lower_state_changed(9),
netif_get_flags(9), netif_set_mtu_ext(9),
netif_pre_changeaddr_notify(9), dev_get_phys_port_id(9),
dev_get_phys_port_name(9), netif_get_port_parent_id(9),
netdev_port_same_parent_id(9),
netdev_change_proto_down_reason_locked(9), dev_change_xdp_fd(9),
dev_index_reserve(9), netdev_update_features(9),
netdev_change_features(9), netif_stacked_transfer_operstate(9),
register_netdevice(9), register_netdev(9), netdev_wait_allrefs_any(9),
dev_get_stats(9), dev_fetch_sw_netstats(9), dev_get_tstats64(9),
netdev_sw_irq_coalesce_default_on(9), alloc_netdev_mqs(9),
free_netdev(9), alloc_netdev_dummy(9), synchronize_net(9),
unregister_netdevice_queue(9), unregister_netdevice_many(9),
unregister_netdev(9), netdev_increment_features(9),
netdev_compute_master_upper_features(9), netdev_drivername(9)

xoxo, ./net/core — October 2026 — netif_set_tso_max_size(9) 💖