hns_dsaf_fi...ty_mac_entry(9)

💅 hns_dsaf_find_empty_mac_entry — bestie's guide to finding an empty MAC slot

okay so first things first, this is a page from the Kernel API Manual (yes, that's the manual's name, we're in kernel-land now 🧚) and it's all about one little function that goes hunting for a free spot in the DSA fabric's soft MAC table. She's small, she's specific, she's doing her job. Slay.

---

✨ NAME ✨

hns_dsaf_find_empty_mac_entry — literally goes searching the dsa fabric for a soft empty-entry 💅 that's it, that's the whole gig.

---

🌸 SYNOPSIS 🌸

u16 hns_dsaf_find_empty_mac_entry (struct dsaf_device *dsaf_dev );

no cap, that's the signature. one argument, returns a u16. simple, iconic, no drama.

---

🎀 ARGUMENTS 🎀

• dsaf_dev — dsa fabric device struct pointer 🫶. this is the device you're handing over so she knows where to go look. she needs the pointer, bestie, don't forget it.

---

🦋 SEE ALSO 🦋

okay this is the part where the manpage just dumps the entire friend group in the group chat 😭 like literally everyone from hns_dsaf_main.c shows up. so here's the whole squad, no one gets left out:

• hns_dsaf_sbm_link_sram_init_en(9), hns_dsaf_reg_cnt_clr_ce(9), hns_dsaf_ppe_qid_cfg(9), hns_dsaf_sw_port_type_cfg(9), hns_dsaf_stp_port_type_cfg(9), hns_dsaf_sbm_cfg(9)
• hns_dsaf_sbm_cfg_mib_en(9), hns_dsaf_sbm_bp_wl_cfg(9), hns_dsaf_voq_bp_all_thrd_cfg(9), hns_dsaf_tbl_tcam_data_cfg(9)
• hns_dsaf_tbl_tcam_mcast_cfg(9), hns_dsaf_tbl_tcam_ucast_cfg(9), hns_dsaf_tbl_line_cfg(9), hns_dsaf_tbl_tcam_mcast_pul(9)
• hns_dsaf_tbl_line_pul(9), hns_dsaf_tbl_tcam_data_mcast_pul(9), hns_dsaf_tbl_tcam_data_ucast_pul(9), hns_dsaf_tbl_stat_en(9)
• hns_dsaf_rocee_bp_en(9), hns_dsaf_single_line_tbl_cfg(9), hns_dsaf_tcam_uc_cfg(9), hns_dsaf_tcam_mc_cfg(9)
• hns_dsaf_tcam_uc_cfg_vague(9), hns_dsaf_tcam_mc_cfg_vague(9), hns_dsaf_tcam_mc_invld(9), hns_dsaf_tcam_uc_get(9)
• hns_dsaf_tcam_mc_get(9), hns_dsaf_tbl_line_init(9), hns_dsaf_tbl_tcam_init(9), hns_dsaf_pfc_en_cfg(9)
• hns_dsaf_comm_init(9), hns_dsaf_inode_init(9), hns_dsaf_sbm_init(9), hns_dsaf_tbl_init(9)
• hns_dsaf_voq_init(9), hns_dsaf_init_hw(9), hns_dsaf_remove_hw(9), hns_dsaf_init(9)
• hns_dsaf_free(9), hns_dsaf_find_soft_mac_entry(9), hns_dsaf_find_empty_mac_entry_reverse(9), hns_dsaf_set_mac_key(9)
• hns_dsaf_set_mac_uc_entry(9), hns_dsaf_add_mac_mc_port(9), hns_dsaf_del_mac_entry(9), hns_dsaf_del_mac_mc_port(9)
• hns_dsaf_free_dev(9), hns_dsaf_pfc_unit_cnt(9), hns_dsaf_port_work_rate_cfg(9), hns_dsaf_fix_mac_mode(9)
• hns_dsaf_get_regs(9), hns_dsaf_get_stats(9), hns_dsaf_get_sset_count(9), hns_dsaf_get_strings(9)
• hns_dsaf_get_regs_count(9), hns_dsaf_probe(9), hns_dsaf_remove(9)

and yeah, she lives in the kernel file ./drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c — that's the address, that's where she hangs out 🏠

---

💜 the cute sign-off 💜

this page came to you straight from the ./drivers/net/ethernet/hisilic... corner of the source tree, dated October 2026 (yes bestie, the future, we're ahead of schedule ✨⏳), and it's titled hns_dsaf_fi...ty_mac_entry(9) in case you forgot what you clicked on. go find those empty entries, you absolute main character 👑💖