cppi5_hdesc_update_flags(9)

💅 cppi5_hdesc_update_flags(9) — from the Kernel API Manual, bestie

Okay so this one's from the Linux kernel API manual, and it's honestly a little icon ✨ — it's the function that replaces your host descriptor's flags. Not appends, not merges, replaces. Like a glow-up for your descriptor's flag field. Obsessed.

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🌸 NAME 🌸

cppi5_hdesc_update_flags — Replace descriptor flags

That's it. That's the whole gig. She swaps out the flags. Periodt 💅

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🦋 SYNOPSIS 🦋

void cppi5_hdesc_update_flags (struct cppi5_host_desc_t *desc , u32 flags );

Look at that return type — void. She does her thing and doesn't report back. No return value, no drama, no notes. Main character energy fr fr 🎀

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🧚 ARGUMENTS 🧚

• desc — Host packet descriptor. This is the descriptor you're doing the flag glow-up on. Give her a pointer and she'll handle it 🫶
• flags — The new flags, and the supported values are specifically these two, no cap:
  • CPPI5_INFO0_HDESC_EPIB_PRESENT
  • CPPI5_INFO0_HDESC_PSINFO_LOCATION

Heads up bestie: those are the supported values listed for this argument — the manpage isn't giving you a bigger menu than that, so don't go inventing your own 🔥

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💜 SEE ALSO 💜

So the kernel file you want is ./include/linux/dma/ti-cppi5.h — that's where this whole family lives. And here's the full friend group, everyone's invited, all (9) sections:

• struct cppi5_desc_hdr_t(9)
• struct cppi5_host_desc_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_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)

Like, the whole squad showed up for this one function. Respect 🙈💖

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👑 sign-off 👑

That's the whole page, bestie! Source path ./include/linux/dma, dated October 2026, and this little baddie is filed under cppi5_hdesc_update_flags(9). Go update those flags, you icon 🌈⭐💅