iwpm_register_pid(9)

💖 iwpm_register_pid(9) 💖

okay so bestie, welcome to the Kernel API Manual — we're looking at iwpm_register_pid(9) today, and it's giving "netlink messenger to userspace" realness. 🫶

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🌸 NAME 🌸

iwpm_register_pid — send a netlink query to userspace to get the iwarp port mapper pid ✨

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✨ SYNOPSIS ✨

int iwpm_register_pid (struct iwpm_dev_data *pm_msg , u8 nl_client );

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🎀 ARGUMENTS 🎀

• pm_msg — contains the driver info that gets sent to the userspace port mapper, periodt 💅
• nl_client — the index of the netlink client, iykyk 🦋

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🦋 DESCRIPTION 🦋

the nlmsg attributes are exactly these four, no cap:

[IWPM_NLA_REG_PID_SEQ] [IWPM_NLA_REG_IF_NAME] [IWPM_NLA_REG_IBDEV_NAME] [IWPM_NLA_REG_ULIB_NAME]

that's literally the lineup. 🌈

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💅 SEE ALSO 💅

also go peek at the kernel file ./drivers/infiniband/core/iwpm_msg.c, plus these iconic little functions:

• iwpm_valid_pid(9)
• iwpm_add_mapping(9)
• iwpm_add_and_query_mapping(9)
• iwpm_remove_mapping(9)
• iwpm_register_pid_cb(9)
• iwpm_add_mapping_cb(9)
• iwpm_add_and_query_mapping_cb(9)
• iwpm_remote_info_cb(9)
• iwpm_mapping_info_cb(9)
• iwpm_ack_mapping_info_cb(9)
• iwpm_mapping_error_cb(9)
• iwpm_hello_cb(9)

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mwah 💋 this page lives in ./drivers/infiniband/core and is dated October 2026 — slay and goodbye, bestie! 🎀💖