nla_get_u8_default(9)
π nla_get_u8_default β Kernel API Manual, section 9 π
okay so bestie, welcome to the Kernel API Manual (that's section 9, iykyk) and today's main character is nla_get_u8_default. she's a tiny little helper, but she's fr fr carrying the whole "don't crash when the attribute is missing" agenda. no cap. β¨
πΈ NAME πΈ
nla_get_u8_default β return payload of u8 attribute or default
like, she gets you the u8 payload... or she gets you the default. either way you're covered, she's not gonna leave you hanging. π«Ά
π¦ SYNOPSIS π¦
u8 nla_get_u8_default (const struct nlattr *nla , u8 defvalue );
look at her. so small. so powerful. π
β¨ ARGUMENTS β¨
nlaβ the u8 netlink attribute, and bestieβ¦ she may beNULL. yes, actually NULL. that's literally the whole point of this function, we're being brave today. πdefvalueβ the default value to use ifnlaisNULL. your safety net. your emotional support u8. π
π₯ RETURN π₯
the value of the attribute, or the default value if not present. periodt. that's it, that's the return. π
π SEE ALSO π
okay so this is the part where the manpage flexes on you, because the kernel file ./include/net/netlink.h comes with a whole entourage. like, an entire friend group. we are not skipping anyone, everyone gets their moment, slay:
struct nla_policy(9)struct nl_info(9)enum netlink_validation(9)nlmsg_msg_size(9)nlmsg_total_size(9)nlmsg_padlen(9)nlmsg_data(9)nlmsg_len(9)nlmsg_payload(9)nlmsg_attrdata(9)nlmsg_attrlen(9)nlmsg_ok(9)nlmsg_next(9)nla_parse(9)nla_parse_deprecated(9)nla_parse_deprecated_strict(9)__nlmsg_parse(9)nlmsg_parse(9)nlmsg_parse_deprecated(9)nlmsg_parse_deprecated_strict(9)nlmsg_find_attr(9)nla_validate_deprecated(9)nla_validate(9)nlmsg_validate_deprecated(9)nlmsg_report(9)nlmsg_seq(9)nlmsg_for_each_attr(9)nlmsg_for_each_attr_type(9)nlmsg_put(9)nlmsg_append(9)nlmsg_put_answer(9)nlmsg_new(9)nlmsg_new_large(9)nlmsg_end(9)nlmsg_get_pos(9)nlmsg_trim(9)nlmsg_cancel(9)nlmsg_free(9)nlmsg_consume(9)nlmsg_multicast_filtered(9)nlmsg_multicast(9)nlmsg_unicast(9)nlmsg_for_each_msg(9)nl_dump_check_consistent(9)nla_attr_size(9)nla_total_size(9)nla_padlen(9)nla_type(9)nla_data(9)nla_len(9)nla_ok(9)nla_next(9)nla_find_nested(9)nla_parse_nested(9)nla_parse_nested_deprecated(9)nla_put_u8(9)nla_put_u16(9)nla_put_be16(9)nla_put_net16(9)nla_put_le16(9)nla_put_u32(9)nla_put_uint(9)nla_put_be32(9)nla_put_net32(9)nla_put_le32(9)nla_put_u64_64bit(9)nla_put_be64(9)nla_put_net64(9)nla_put_le64(9)nla_put_s8(9)nla_put_s16(9)nla_put_s32(9)nla_put_s64(9)nla_put_sint(9)nla_put_string(9)nla_put_flag(9)nla_put_msecs(9)nla_put_in_addr(9)nla_put_in6_addr(9)nla_put_bitfield32(9)nla_get_u32(9)nla_get_u32_default(9)nla_get_be32(9)nla_get_be32_default(9)nla_get_le32(9)nla_get_le32_default(9)nla_get_u16(9)nla_get_u16_default(9)nla_get_be16(9)nla_get_be16_default(9)nla_get_le16(9)nla_get_le16_default(9)nla_get_u8(9)nla_get_u64(9)nla_get_u64_default(9)nla_get_uint(9)nla_get_uint_default(9)nla_get_be64(9)nla_get_be64_default(9)nla_get_le64(9)nla_get_le64_default(9)nla_get_s32(9)nla_get_s32_default(9)nla_get_s16(9)nla_get_s16_default(9)nla_get_s8(9)nla_get_s8_default(9)nla_get_s64(9)nla_get_s64_default(9)nla_get_sint(9)nla_get_sint_default(9)nla_get_flag(9)nla_get_msecs(9)nla_get_msecs_default(9)nla_get_in_addr(9)nla_get_in_addr_default(9)nla_get_in6_addr(9)nla_get_bitfield32(9)nla_memdup(9)nla_nest_start_noflag(9)nla_nest_start(9)nla_nest_end(9)nla_nest_end_safe(9)nla_nest_cancel(9)nla_put_empty_nest(9)__nla_validate_nested(9)nla_need_padding_for_64bit(9)nla_align_64bit(9)nla_total_size_64bit(9)nla_for_each_attr(9)nla_for_each_attr_type(9)nla_for_each_nested(9)nla_for_each_nested_type(9)nla_is_last(9)
look at that list. iconic. absolutely ate. π₯π
and that's the whole vibe check, bestie β this page lives in ./include/net, stamped October 2026, and it's part of the Kernel API Manual. go forth and read your attributes safely, mwah ππ¦πΈ
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms