ice_min_tx_r...ersubscribed(9)

💅 ice_min_tx_rate_oversubscribed — kernel API, section 9

okay bestie so this is a page out of the Kernel API Manual (section 9, the kernel internals one, not the "type man ls" one ✨) and it's about one single tiny bouncer function that checks whether a VF is about to be way too greedy with its minimum Tx rate. it's giving security-guard-at-the-club energy 🎀

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✨ NAME ✨

ice_min_tx_rate_oversubscribed — check if min Tx rate causes oversubscription

like, literally just that. it peeks at the number you're trying to set and goes "mm, no bestie, that's too much" 😭

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🌸 SYNOPSIS 🌸

bool ice_min_tx_rate_oversubscribed (struct ice_vf *vf , int min_tx_rate );

returns a bool, takes a struct ice_vf * and an int. simple. clean. iconic. 💅

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🦋 ARGUMENTS 🦋

• vf — the VF that's trying to configure min_tx_rate. it's the one standing at the counter with its little request form 🫶
• min_tx_rate — min Tx rate in Mbps. this is the number being put up for approval 💖

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🌈 DESCRIPTION 🌈

so here's the vibe: this function checks whether the min_tx_rate being passed in will cause oversubscription of total min_tx_rate — and it figures that out based on the current link speed plus all the other VFs' already-configured min_tx_rate. ngl it's doing math on behalf of everybody else in the group chat 🔥

Return true if the passed min_tx_rate would cause oversubscription, else return false.

that's it. that's the whole function. true = nope, too much, denial. false = you're good, go off 👑

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💜 SEE ALSO 💜

the source lives right here, miss thing:

Kernel file ./drivers/net/ethernet/intel/ice/ice_sriov.c

and here's the whole extended friend group — every single one of these is a real (9) page, no cap:

• ice_free_vf_entries(9)
• ice_free_vf_res(9)
• ice_dis_vf_mappings(9)
• ice_free_vfs(9)
• ice_vf_vsi_setup(9)
• ice_ena_vf_msix_mappings(9)
• ice_ena_vf_q_mappings(9)
• ice_ena_vf_mappings(9)
• ice_calc_vf_reg_idx(9)
• ice_set_per_vf_res(9)
• ice_init_vf_vsi_res(9)
• ice_start_vfs(9)
• ice_sriov_free_vf(9)
• ice_sriov_clear_reset_state(9)
• ice_sriov_clear_mbx_register(9)
• ice_sriov_trigger_reset_register(9)
• ice_sriov_poll_reset_status(9)
• ice_sriov_clear_reset_trigger(9)
• ice_sriov_post_vsi_rebuild(9)
• ice_create_vf_entries(9)
• ice_ena_vfs(9)
• ice_pci_sriov_ena(9)
• ice_check_sriov_allowed(9)
• ice_sriov_get_vf_total_msix(9)
• ice_sriov_set_msix_vec_count(9)
• ice_sriov_configure(9)
• ice_process_vflr_event(9)
• ice_get_vf_from_pfq(9)
• ice_globalq_to_pfq(9)
• ice_vf_lan_overflow_event(9)
• ice_set_vf_spoofchk(9)
• ice_get_vf_cfg(9)
• __ice_set_vf_mac(9)
• ice_set_vf_mac(9)
• ice_setup_vf_trust(9)
• ice_set_vf_trust(9)
• ice_set_vf_link_state(9)
• ice_calc_all_vfs_min_tx_rate(9)
• ice_set_vf_bw(9)
• ice_get_vf_stats(9)
• ice_is_supported_port_vlan_proto(9)
• ice_set_vf_port_vlan(9)
• ice_print_vf_rx_mdd_event(9)
• ice_print_vf_tx_mdd_event(9)
• ice_print_vfs_mdd_events(9)
• ice_restore_all_vfs_msi_state(9)

like okay that's a lot of siblings but they're all valid and we love them equally 🧚

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heads up babe: ice_calc_all_vfs_min_tx_rate(9) in that list is lowkey the accomplice here — it's the one doing the total across all VFs. this page just does the verdict 💀

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that's the whole page, no filler, no sketchy extra claims, we keep the facts exactly as they came 💜 source path is ./drivers/net/ethernet/intel/ice, and this little beauty is dated October 2026 — see you in the next one, mwah 😘🎀✨