ib_send_cm_rej(9)

✨ NAME ✨

Okay bestie, welcome to ib_send_cm_rej(9) from the Kernel API Manual 💅. This function sends a connection rejection message to the remote node. That's the whole vibe: connection request said no, and this is the little message that says it with style. 💌

✨ SYNOPSIS ✨

int ib_send_cm_rej (struct ib_cm_id *cm_id , enum ib_cm_rej_reason
reason , void *ari , u8 ari_length , const void *private_data , u8
private_data_len );

💖 ARGUMENTS 💖

• cm_id — Connection identifier associated with the connection being rejected. Basically the handshake's main character 🫶.
• reason — Reason for the connection request rejection. The "why, though?" of it all.
• ari — Optional additional rejection information. Extra tea, if you have it 🍓.
• ari_length — Size of the additional rejection information, in bytes. Gotta tell everyone how much extra tea there is.
• private_data — Optional user-defined private data sent with the rejection message. Your personal little note in the rejection 💌.
• private_data_len — Size of the private data buffer, in bytes. The byte count for your note, periodt.

🦋 SEE ALSO 🦋

Kernel file ./include/rdma/ib_cm.h is the place to peek at, and these friends are all in the group chat too:

• ib_cm_handler(9)
• ib_create_cm_id(9)
• ib_destroy_cm_id(9)
• ib_cm_listen(9)
• ib_send_cm_req(9)
• ib_send_cm_rep(9)
• ib_send_cm_rtu(9)
• ib_send_cm_dreq(9)
• ib_send_cm_drep(9)
• ib_cm_notify(9)
• ib_prepare_cm_mra(9)
• ib_cm_init_qp_attr(9)
• ib_send_cm_sidr_req(9)
• ib_send_cm_sidr_rep(9)
• ibcm_reject_msg(9)

Signed, sealed, delivered: source/version ./include/rdma, date October 2026, page ib_send_cm_rej(9) 🌈💜