fc_exch_mgr_reset(9)

💅 fc_exch_mgr_reset — a Kernel API Manual moment (yes bestie, we're in the kernel API manual)

okay so picture this: it's giving "one function to wipe the whole slate clean" ✨ This is fc_exch_mgr_reset, and it lives in the Kernel API Manual, which is exactly as iconic as it sounds 🎀

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✨ NAME ✨

fc_exch_mgr_reset — reset all the EMs of a local port 🧹💖

🌸 SYNOPSIS 🌸

void fc_exch_mgr_reset (struct fc_lport *lport , u32 sid , u32 did );

🦋 ARGUMENTS 🦋

• lport — the local port whose EMs we're resetting, like, the main character of this whole operation 👑
• sid — the source ID, no cap
• did — the destination ID, bestie 💅

💖 DESCRIPTION 💖

So what does it actually do? It resets all the EMs that are associated with a given local port. All of them. Every last one. Then it releases all sequences and exchanges — full clean slate energy, literally 🫶

And here's the nuance, because there's always nuance:

• if sid is non-zero, then it resets only the exchanges sent from the local port's FID 🌈
• if did is non-zero, then it resets only the exchanges destined for the local port's FID ⭐

so like… non-zero means "hey, narrow it down", zero means "go off, do all of them" 😭💀

🧚 SEE ALSO 🧚

Kernel file ./drivers/scsi/libfc/fc_exch.c — and the whole extended friend group 💜:

• struct fc_exch_pool(9)
• struct fc_exch_mgr(9)
• struct fc_exch_mgr_anchor(9)
• fc_exch_name_lookup(9)
• fc_exch_rctl_name(9)
• fc_exch_hold(9)
• fc_exch_setup_hdr(9)
• fc_exch_release(9)
• fc_exch_timer_cancel(9)
• fc_exch_timer_set_locked(9)
• fc_exch_timer_set(9)
• fc_exch_done_locked(9)
• fc_exch_ptr_get(9)
• fc_exch_ptr_set(9)
• fc_exch_delete(9)
• fc_seq_send(9)
• fc_seq_alloc(9)
• fc_seq_start_next_locked(9)
• fc_seq_start_next(9)
• fc_exch_abort_locked(9)
• fc_seq_exch_abort(9)
• fc_invoke_resp(9)
• fc_exch_timeout(9)
• fc_exch_em_alloc(9)
• fc_exch_alloc(9)
• fc_exch_find(9)
• fc_exch_done(9)
• fc_exch_resp(9)
• fc_seq_lookup_recip(9)
• fc_seq_lookup_orig(9)
• fc_exch_set_addr(9)
• fc_seq_els_rsp_send(9)
• fc_seq_send_last(9)
• fc_seq_send_ack(9)
• fc_exch_send_ba_rjt(9)
• fc_exch_recv_abts(9)
• fc_seq_assign(9)
• fc_seq_release(9)
• fc_exch_recv_req(9)
• fc_exch_recv_seq_resp(9)
• fc_exch_recv_resp(9)
• fc_exch_abts_resp(9)
• fc_exch_recv_bls(9)
• fc_seq_ls_acc(9)
• fc_seq_ls_rjt(9)
• fc_exch_reset(9)
• fc_exch_pool_reset(9)
• fc_exch_lookup(9)
• fc_exch_els_rec(9)
• fc_exch_rrq_resp(9)
• fc_exch_seq_send(9)
• fc_exch_rrq(9)
• fc_exch_els_rrq(9)
• fc_exch_update_stats(9)
• fc_exch_mgr_add(9)
• fc_exch_mgr_destroy(9)
• fc_exch_mgr_del(9)
• fc_exch_mgr_list_clone(9)
• fc_exch_mgr_alloc(9)
• fc_exch_mgr_free(9)
• fc_find_ema(9)
• fc_exch_recv(9)
• fc_exch_init(9)
• fc_setup_exch_mgr(9)
• fc_destroy_exch_mgr(9)

it's giving "squad goals", truly 😭🔥

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ngl bestie, that SEE ALSO list is a whole friend group chat and you're gonna want to @ all of them 💀

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okay that's the whole page, and before you go — this one's from ./drivers/scsi/libfc, dated October 2026, and it's fc_exch_mgr_reset(9) all the way down, periodt 💅✨🦋