iwpm_create_nlmsg(9)

✨ iwpm_create_nlmsg — Kernel API Manual ✨

okay so bestie, we're in the kernel API manual today and the vibe is netlink messages. this one's iwpm_create_nlmsg, section 9 (kernel API, iykyk) 💅

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🌸 NAME 🌸

iwpm_create_nlmsg — allocate an skb and form a netlink message 🎀

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🦋 SYNOPSIS 🦋

struct sk_buff * iwpm_create_nlmsg (u32 nl_op , struct nlmsghdr **nlh ,
       int nl_client );

like, that's the whole signature, copy it exactly, no cap 📋

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💖 ARGUMENTS 💖

• nl_op — the netlink message opcode, aka which op we're doing ✨
• nlh — this bad boy holds the address of the netlink message header inside the skb 🫶
• nl_client — the index of the netlink client, so it knows who you are 😌

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🔥 DESCRIPTION 🔥

Returns the newly allocated skb — or NULL if the tailroom of the skb is insufficient to store the message header and payload 😭

fr fr, if you get NULL back, it's not a personality flaw, the tailroom just wasn't big enough for the header and the payload. check your space before you come for it 🧚

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💜 SEE ALSO 💜

Kernel file ./drivers/infiniband/core/iwpm_util.h

• iwpm_get_nlmsg_request(9)
• iwpm_free_nlmsg_request(9)
• iwpm_find_nlmsg_request(9)
• iwpm_wait_complete_req(9)
• iwpm_get_nlmsg_seq(9)
• iwpm_add_remote_info(9)
• iwpm_check_registration(9)
• iwpm_set_registration(9)
• iwpm_get_registration(9)
• iwpm_send_mapinfo(9)
• iwpm_mapinfo_available(9)
• iwpm_compare_sockaddr(9)
• iwpm_validate_nlmsg_attr(9)
• iwpm_parse_nlmsg(9)
• iwpm_print_sockaddr(9)
• iwpm_send_hello(9)

the whole friend group, assembled 🌈

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sign-off szn 🎀 this page lives under ./drivers/infiniband/core, and it's dated October 2026 — so yeah, bestie, we're reading from the future, obsessed ⭐ slay, go build your netlink message, and remember: NULL is a valid answer and so is walking away 💅💖