cipso_v4_map_cat_rbm_hton(9)

💅 cipso_v4_map_cat_rbm_hton(9) 💅

okay bestie, welcome to this Kernel API Manual page for cipso_v4_map_cat_rbm_hton(9). It’s giving “host-to-network category mapping” and honestly the vibe is very specific, but we’re gonna get through it together. 🫶

🌸 NAME 🌸

cipso_v4_map_cat_rbm_hton — perform a category mapping from host to network. periodt. 💖

🦋 SYNOPSIS 🦋

int cipso_v4_map_cat_rbm_hton (const struct cipso_v4_doi *doi_def , const struct netlbl_lsm_secattr *secattr , unsigned char *net_cat , u32 net_cat_len );

🎀 ARGUMENTS 🎀

• doi_def — the DOI definition. like, the definition definition, iykyk. 🎀
• secattr — the security attributes.
• net_cat — the zero'd out category bitmap in network/CIPSO format. yes, already zero'd out — it’s cleared for takeoff ✨
• net_cat_len — the length of the CIPSO bitmap in bytes.

✨ DESCRIPTION ✨

bestie, this one does a label mapping: it translates a local MLS category bitmap into the correct CIPSO bitmap using the DOI definition you gave it. On success it returns the minimum size in bytes of the network bitmap; otherwise it returns negative values. That’s the contract, fr fr. 💅

👑 SEE ALSO 👑

Kernel file ./net/ipv4/cipso_ipv4.c plus this whole reference group chat:

• cipso_v4_cache_entry_free(9), cipso_v4_map_cache_hash(9), cipso_v4_cache_init(9), cipso_v4_cache_invalidate(9), cipso_v4_cache_check(9), cipso_v4_cache_add(9), cipso_v4_doi_search(9), cipso_v4_doi_add(9)
• cipso_v4_doi_free(9), cipso_v4_doi_free_rcu(9), cipso_v4_doi_remove(9), cipso_v4_doi_getdef(9), cipso_v4_doi_putdef(9), cipso_v4_doi_walk(9), cipso_v4_map_lvl_valid(9), cipso_v4_map_lvl_hton(9)
• cipso_v4_map_lvl_ntoh(9), cipso_v4_map_cat_rbm_valid(9), cipso_v4_map_cat_rbm_ntoh(9), cipso_v4_map_cat_enum_valid(9), cipso_v4_map_cat_enum_hton(9), cipso_v4_map_cat_enum_ntoh(9), cipso_v4_map_cat_rng_valid(9), cipso_v4_map_cat_rng_hton(9)
• cipso_v4_map_cat_rng_ntoh(9), cipso_v4_gentag_hdr(9), cipso_v4_gentag_rbm(9), cipso_v4_parsetag_rbm(9), cipso_v4_gentag_enum(9), cipso_v4_parsetag_enum(9), cipso_v4_gentag_rng(9), cipso_v4_parsetag_rng(9)
• cipso_v4_gentag_loc(9), cipso_v4_parsetag_loc(9), cipso_v4_optptr(9), cipso_v4_validate(9), cipso_v4_error(9), cipso_v4_genopt(9), cipso_v4_sock_setattr(9), cipso_v4_req_setattr(9)
• cipso_v4_delopt(9), cipso_v4_sock_delattr(9), cipso_v4_req_delattr(9), cipso_v4_getattr(9), cipso_v4_sock_getattr(9), cipso_v4_skbuff_setattr(9), cipso_v4_skbuff_delattr(9), cipso_v4_init(9)

🫶 and that’s the page, bestie! footer source/version: ./net/ipv4 · date: October 2026 · page: cipso_v4_map_cat_rbm_hton(9). bye, love u, don’t forget the zero'd-out bitmap 💖