nla_reserve_nohdr(9)

🦋 nla_reserve_nohdr(9) — NAME 💖

okay so this is from the Kernel API Manual, and bestie, the name says it all: nla_reserve_nohdr reserves room for an attribute without a header. literally that. no header, just payload, main character energy ✨

✨ SYNOPSIS ✨

void * nla_reserve_nohdr (struct sk_buff *skb , int attrlen );

🎀 ARGUMENTS 🎀

• skb — socket buffer to reserve room on. it's the bag you're stuffing, basically 👜
• attrlen — length of attribute payload. like, how many bytes of payload we're talking about, no cap 💅

💅 DESCRIPTION 💅

Reserves room for attribute payload without a header. it's giving “payload only, header who?” 🦋

Returns NULL if the tailroom of the skb is insufficient to store the attribute payload. that's the vibe check failing 😭 so yeah, NULL means not enough tailroom, periodt.

🌈 SEE ALSO 🌈

• Kernel file ./lib/nlattr.c
• __nla_validate(9)
• nla_policy_len(9)
• __nla_parse(9)
• nla_find(9)
• nla_strscpy(9)
• nla_strdup(9)
• nla_memcpy(9)
• nla_memcmp(9)
• nla_strcmp(9)
• __nla_reserve(9)
• __nla_reserve_64bit(9)
• __nla_reserve_nohdr(9)
• nla_reserve(9)
• nla_reserve_64bit(9)
• __nla_put(9)
• __nla_put_64bit(9)
• __nla_put_nohdr(9)
• nla_put(9)
• nla_put_64bit(9)
• nla_put_nohdr(9)
• nla_append(9)

mwah 💋 this cutie comes from source/version ./lib, dated October 2026 — nla_reserve_nohdr(9) out, bestie 🫶