STRUCT CPPI5_HOST_DESC_T(9)

💅 struct cppi5_host_desc_t(9) 💅

okay bestie, welcome to the Kernel API Manual page for struct cppi5_host_desc_t — literally the Host-mode packet and buffer descriptor definition. this is the struct, the whole struct, and nothing but the struct details, no cap. 💖

🌸 NAME 🌸

struct cppi5_host_desc_t — Host-mode packet and buffer descriptor definition. it’s giving “here’s the blueprint for a host-mode packet + buffer descriptor” and we are obsessed. ✨

✨ SYNOPSIS ✨

struct cppi5_host_desc_t {
    struct cppi5_desc_hdr_t hdr;
    u64 next_desc;
    u64 buf_ptr;
    u32 buf_info1;
    u32 org_buf_len;
    u64 org_buf_ptr;
    u32 epib[];
};

🎀 Members 🎀

here’s the whole cast, member by member — no skipping, bestie, every single one is main character energy:

• hdr — Descriptor header. the official little crown at the top. 👑
• next_desc — word 4/5: Linking word. yes, the linking word, exactly those words. 🫶
• buf_ptr — word 6/7: Buffer pointer. points at the buffer, periodt. 💅
• buf_info1 — word 8: Buffer valid data length. that’s the valid data length, literally.
• org_buf_len — word 9: Original buffer length. original flavor, unchanged. 🍓
• org_buf_ptr — word 10/11: Original buffer pointer. the original pointer, no cap. ✨
• epib — Extended Packet Info Data (optional, 4 words), and/or Protocol Specific Data (optional, 0-128 bytes in multiples of 4), and/or Other Software Data (0-N bytes, optional). it’s the flexible bonus section and it’s giving “optional but iconic”. 🌈

🦋 SEE ALSO 🦋

Kernel file ./include/linux/dma/ti-cppi5.h — and bestie, the full squad of related manual pages is right here, all (9) and all accounted for:

• struct cppi5_desc_hdr_t(9)
• struct cppi5_desc_epib_t(9)
• struct cppi5_monolithic_desc_t(9)
• cppi5_desc_is_tdcm(9)
• cppi5_desc_get_type(9)
• cppi5_desc_get_errflags(9)
• cppi5_desc_get_pktids(9)
• cppi5_desc_set_pktids(9)
• cppi5_desc_set_retpolicy(9)
• cppi5_desc_get_tags_ids(9)
• cppi5_desc_set_tags_ids(9)
• cppi5_hdesc_calc_size(9)
• cppi5_hdesc_init(9)
• cppi5_hdesc_update_flags(9)
• cppi5_hdesc_update_psdata_size(9)
• cppi5_hdesc_get_psdata_size(9)
• cppi5_hdesc_get_pktlen(9)
• cppi5_hdesc_set_pktlen(9)
• cppi5_hdesc_get_psflags(9)
• cppi5_hdesc_set_psflags(9)
• cppi5_hdesc_get_pkttype(9)
• cppi5_hdesc_set_pkttype(9)
• cppi5_hdesc_attach_buf(9)
• cppi5_hdesc_link_hbdesc(9)
• cppi5_hdesc_epib_present(9)
• cppi5_hdesc_get_psdata(9)
• cppi5_hdesc_get_swdata(9)
• enum cppi5_tr_types(9)
• enum cppi5_tr_event_size(9)
• enum cppi5_tr_trigger(9)
• enum cppi5_tr_trigger_type(9)
• struct cppi5_tr_type0_t(9)
• struct cppi5_tr_type1_t(9)
• struct cppi5_tr_type2_t(9)
• struct cppi5_tr_type3_t(9)
• struct cppi5_tr_type15_t(9)
• struct cppi5_tr_resp_t(9)
• enum cppi5_tr_resp_status_type(9)
• enum cppi5_tr_resp_status_submission(9)
• enum cppi5_tr_resp_status_unsupported(9)
• cppi5_trdesc_calc_size(9)
• cppi5_trdesc_init(9)
• cppi5_tr_init(9)
• cppi5_tr_set_trigger(9)
• cppi5_tr_csf_set(9)

and that’s the whole page, bestie — source ./include/linux/dma, dated October 2026, signed off with all the struct cppi5_host_desc_t(9) energy. slay. 💅✨