cxgb_up(9)

💖 cxgb_up(9) — like, the Kernel API Manual page, bestie 💖

okay so quick vibe check: this is from the Kernel API Manual, and it's about one function that wakes your adapter up. no cap, it's short but it matters. 🦋

---

✨ NAME ✨

cxgb_up — enable the adapter. that's it. that's the whole personality. 💅

---

🎀 SYNOPSIS 🎀

int cxgb_up (struct adapter *adap );

literally one argument, one return, iconic behavior. ⭐

---

🌸 ARGUMENTS 🌸

• adap — the adapter being enabled. like, this is the one getting the glow-up. 🫶

---

🔥 DESCRIPTION 🔥

okay so here's the tea ☕: cxgb_up is called when the first port is enabled — like the moment your adapter's main character era begins 👑. it does all the actions necessary to make an adapter operational, which lowkey includes:

• completing the initialization of HW modules 🧚
• enabling interrupts ⚡

🚨 bestie, heads up, fr fr: it must be called with the rtnl lock held. not "should", not "maybe", must. don't try it without the lock, that's giving undefined chaos energy and we don't do that here. 💀

---

🌈 SEE ALSO 🌈

• Kernel file ./drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
• cxgb4_change_mac(9)
• cxgb4_write_rss(9)
• setup_rss(9)
• setup_sge_queues(9)
• cxgb4_set_rspq_intr_params(9)
• cxgb4_create_server(9)
• cxgb4_best_mtu(9)
• cxgb4_best_aligned_mtu(9)
• cxgb4_port_chan(9)
• cxgb4_port_e2cchan(9)
• cxgb4_port_viid(9)
• cxgb4_port_idx(9)

all the sibling functions, the whole friend group, iykyk 💜

---

okay bye bestie, this page came from the source at ./drivers/net/ethernet/chelsio... and it's dated October 2026 — that's the sign-off, mwah, slay, periodt 💅✨🎀