is_imm(9)

💖 NAME 💖

okay so welcome to is_imm(9), bestie — this is the Kernel API Manual page for the function that checks whether a packet can be sent as immediate data. It’s giving “tiny but important” energy 🎀

✨ SYNOPSIS ✨

int is_imm (const struct sk_buff *skb );

🦋 ARGUMENTS 🦋

• skb — the packet. That’s the whole argument, no side quests 🫶

🌸 DESCRIPTION 🌸

It returns true if a packet can be sent as a WR with immediate data. That’s the vibe check, and that’s the whole plot 💅✅

👑 SEE ALSO 👑

the guest list is LONG and every single one is invited, no cap:

Kernel file ./drivers/net/ethernet/chelsio/cxgb4/sge.c txq_avail(9),
fl_cap(9), fl_starving(9), deferred_unmap_destructor(9),
free_tx_desc(9), reclaim_completed_tx(9), cxgb4_reclaim_completed_tx(9),
free_rx_bufs(9), unmap_rx_buf(9), refill_fl(9), alloc_ring(9),
sgl_len(9), flits_to_desc(9), is_eth_imm(9), calc_tx_flits(9),
cxgb4_write_sgl(9), cxgb4_ring_tx_db(9), cxgb4_inline_tx_skb(9),
t4_sge_eth_txq_egress_update(9), cxgb4_eth_xmit(9), t4vf_is_eth_imm(9),
t4vf_calc_tx_flits(9), cxgb4_vf_eth_xmit(9),
reclaim_completed_tx_imm(9), cxgb4_ethofld_send_flowc(9),
ctrlq_check_stop(9), ctrl_xmit(9), restart_ctrlq(9), t4_mgmt_tx(9),
is_ofld_imm(9), calc_tx_flits_ofld(9), txq_stop_maperr(9),
ofldtxq_stop(9), service_ofldq(9), ofld_xmit(9), restart_ofldq(9),
skb_txq(9), is_ctrl_pkt(9), t4_ofld_send(9), cxgb4_ofld_send(9),
ofld_xmit_direct(9), t4_crypto_send(9), cxgb4_crypto_send(9),
cxgb4_pktgl_to_skb(9), t4_pktgl_free(9), cxgb4_sgetim_to_hwtstamp(9),
t4_systim_to_hwstamp(9), t4_rx_hststamp(9), t4_tx_hststamp(9),
t4_tx_completion_handler(9), t4_ethrx_handler(9), restore_rx_bufs(9),
is_new_response(9), rspq_next(9), process_responses(9),
napi_rx_handler(9), t4_intr_handler(9), bar2_address(9),
t4_sge_alloc_eth_txq(9), t4_free_sge_resources(9), t4_sge_stop(9),
t4_sge_init_soft(9), t4_sge_init(9)

mwah 💋 and that’s the page — is_imm(9) from the Kernel API Manual, with source/version vibes ./drivers/net/ethernet/chelsio... and date October 2026 🎀✨