nlmsg_seq(9)
π NAME π
okay so welcome to nlmsg_seq(9), section 9 of the Kernel API Manual β yes bestie, we're in kernel-doc territory today π
nlmsg_seq β return the seq number of netlink message
that's literally it. that's the whole job. one (1) job. and she does it flawlessly β¨
π¦ SYNOPSIS π¦
u32 nlmsg_seq (const struct nlmsghdr *nlh );
look at her. tiny signature. zero drama. the u32 up front telling you exactly what you're getting back, and then one little const struct nlmsghdr * pointer strolling in π
πΈ ARGUMENTS πΈ
nlhβ the netlink message header. that's the one and only thing you hand her. netlink message header in, seq number out. very "you give me the envelope, i give you the number written on it" energy π
β¨ RETURN β¨
she returns 0 if the netlink message is NULL π«Ά
fr fr that's the entire RETURN section, no cap β so ifnlhisNULL, expect0back. that's the documented case, and we are not out here inventing extra ones π the rest is the seq number of the netlink message, exactly like NAME says. no sneaky surprises.
π SEE ALSO π
put your seatbelt on bestie, this list is long and i mean iconic-long π every single one of these, in order, zero skips:
- kernel file
./include/net/netlink.h, thenstruct 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_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_u8_default(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)
that's a whole friend group right there and they're all invited to the reading list π§π
and that's the page, bestie!! π«Ά it lives in ./include/net, it's dated October 2026, and it's page nlmsg_seq(9) from the Kernel API Manual β screenshot it, cite it, love it πβ
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