t4_get_link_params(9)

💖 NAME 💖

t4_get_link_params — retrieve basic link parameters for given port. This is the Kernel API Manual page for it, and yes bestie, it's a lil int-returning function with pointer outputs. iconic ✨

✨ SYNOPSIS ✨

int t4_get_link_params (struct port_info *pi , unsigned int *link_okp ,
       unsigned int *speedp , unsigned int *mtup );

🎀 ARGUMENTS 🎀

• pi — the port. That's the main character here 💅
• link_okp — value return pointer for link up/down. It tells you if the link is up or down, no cap.
• speedp — value return pointer for speed (Mb/s). Speed as in megabits per second, not vibes per second 😭
• mtup — value return pointer for mtu. (It's mtup, not mtu, don't come for me.)

🦋 DESCRIPTION 🦋

Okay so t4_get_link_params retrieves basic link parameters for a port: link up/down, speed (Mb/s), and MTU for a specified port. That's the whole function, lowkey simple and highkey useful.

A negative error is returned on failure; 0 on success. So yes, check your return value, bestie — negative means something went off, 0 means slay 💖

🌈 SEE ALSO 🌈

Kernel file: ./drivers/net/ethernet/chelsio/cxgb4/t4_hw.c — that's the spot 🫶

And here is the entire see-also friend group, every single one, no skips, all exact:

t4_wait_op_done_val(9), t4_set_reg_field(9), t4_read_indirect(9),
t4_write_indirect(9), t4_record_mbox(9), t4_wr_mbox_meat_timeout(9),
t4_memory_rw_init(9), t4_memory_update_win(9), t4_memory_rw_residual(9),
t4_memory_rw(9), t4_get_regs_len(9), t4_get_regs(9), t4_eeprom_ptov(9),
t4_seeprom_wp(9), t4_get_raw_vpd_params(9), t4_get_vpd_params(9),
t4_get_pfres(9), sf1_read(9), sf1_write(9), flash_wait_op(9),
t4_read_flash(9), t4_write_flash(9), t4_get_fw_version(9),
t4_get_bs_version(9), t4_get_tp_version(9), t4_get_exprom_version(9),
t4_get_vpd_version(9), t4_get_scfg_version(9), t4_get_version_info(9),
t4_dump_version_info(9), t4_check_fw_version(9),
t4_flash_erase_sectors(9), t4_flash_cfg_addr(9), t4_load_fw(9),
t4_phy_fw_ver(9), t4_load_phy_fw(9), t4_fwcache(9),
fwcaps16_to_caps32(9), fwcaps32_to_caps16(9), t4_link_acaps(9),
t4_link_l1cfg_core(9), t4_restart_aneg(9), t4_handle_intr_status(9),
t4_slow_intr_handler(9), t4_intr_enable(9), t4_intr_disable(9),
t4_config_rss_range(9), t4_config_glbl_rss(9), t4_config_vi_rss(9),
t4_read_rss(9), t4_tp_fw_ldst_rw(9), t4_tp_indirect_rw(9),
t4_tp_pio_read(9), t4_tp_pio_write(9), t4_tp_tm_pio_read(9),
t4_tp_mib_read(9), t4_read_rss_key(9), t4_write_rss_key(9),
t4_read_rss_pf_config(9), t4_read_rss_vf_config(9),
t4_read_rss_pf_map(9), t4_read_rss_pf_mask(9), t4_tp_get_tcp_stats(9),
t4_tp_get_err_stats(9), t4_tp_get_cpl_stats(9), t4_tp_get_rdma_stats(9),
t4_get_fcoe_stats(9), t4_get_usm_stats(9), t4_read_mtu_tbl(9),
t4_read_cong_tbl(9), t4_tp_wr_bits_indirect(9), init_cong_ctrl(9),
t4_load_mtus(9), t4_get_chan_txrate(9), t4_set_trace_filter(9),
t4_get_trace_filter(9), t4_pmtx_get_stats(9), t4_pmrx_get_stats(9),
compute_mps_bg_map(9), t4_get_mps_bg_map(9), t4_get_tp_e2c_map(9),
t4_get_tp_ch_map(9), t4_get_port_type_description(9),
t4_get_port_stats_offset(9), t4_get_port_stats(9), t4_get_lb_stats(9),
t4_mdio_rd(9), t4_mdio_wr(9), t4_sge_decode_idma_state(9),
t4_sge_ctxt_flush(9), t4_read_sge_dbqtimers(9), t4_fw_hello(9),
t4_fw_bye(9), t4_early_init(9), t4_fw_reset(9), t4_fw_halt(9),
t4_fw_restart(9), t4_fw_upgrade(9), t4_fl_pkt_align(9),
t4_fixup_host_params(9), t4_fw_initialize(9), t4_query_params_rw(9),
t4_set_params_timeout(9), t4_set_params(9), t4_cfg_pfvf(9),
t4_alloc_vi(9), t4_free_vi(9), t4_set_rxmode(9),
t4_free_encap_mac_filt(9), t4_free_raw_mac_filt(9),
t4_alloc_encap_mac_filt(9), t4_alloc_raw_mac_filt(9),
t4_alloc_mac_filt(9), t4_free_mac_filt(9), t4_change_mac(9),
t4_set_addr_hash(9), t4_enable_vi_params(9), t4_enable_vi(9),
t4_enable_pi_params(9), t4_identify_port(9), t4_iq_stop(9),
t4_iq_free(9), t4_eth_eq_free(9), t4_ctrl_eq_free(9),
t4_ofld_eq_free(9), t4_link_down_rc_str(9), fwcap_to_fwspeed(9),
lstatus_to_fwcap(9), t4_handle_get_port_info(9), t4_update_port_info(9),
t4_handle_fw_rpl(9), init_link_config(9), t4_prep_adapter(9),
t4_shutdown_adapter(9), t4_bar2_sge_qregs(9), t4_init_devlog_params(9),
t4_init_sge_params(9), t4_init_tp_params(9), t4_filter_field_shift(9),
t4_init_portinfo(9), t4_read_cimq_cfg(9), t4_read_cim_ibq(9),
t4_read_cim_obq(9), t4_cim_read(9), t4_cim_write(9), t4_cim_read_la(9),
t4_tp_read_la(9), t4_idma_monitor_init(9), t4_idma_monitor(9),
t4_load_cfg(9), t4_set_vf_mac_acl(9), t4_read_pace_tbl(9),
t4_get_tx_sched(9), t4_sge_ctxt_rd_bd(9), t4_i2c_rd(9),
t4_set_vlan_acl(9), modify_device_id(9), t4_load_boot(9),
t4_flash_bootcfg_addr(9)

Bye bestie 🎀 — this page's source/version footer is ./drivers/net/ethernet/chelsio..., the date on it is October 2026, and the page is t4_get_link_params(9). It ate, periodt 💅✨