gsi_channel_trans_alloc(9)

💖 NAME 💖

gsi_channel_trans_alloc — bestie, this is the one that allocates a GSI transaction on a channel. That's it, that's the whole vibe ✨

🌸 SYNOPSIS 🌸

struct gsi_trans * gsi_channel_trans_alloc (struct gsi *gsi , u32
channel_id , u32 tre_count , enum dma_data_direction direction );

okay so this is the manual page for the Linux Kernel API, and the way this function signature just sits there looking all official?? iconic. Let's get into what all those args mean 🫶

🎀 ARGUMENTS 🎀

• gsi — the GSI pointer, literally just your GSI pointer bestie, nothing deeper 💅
• channel_id — which channel this transaction is associated with 🔥
• tre_count — the number of elements in the transaction, count 'em up 🍓
• direction — the DMA direction for the entire SGL, or DMA_NONE if you're feeling spicy 🌈

⭐ RETURN ⭐

You get back a GSI transaction structure, periodt. 💀 But — and this is the important part, ngl — if all available transactions are in use, you get a null pointer instead. So like… check it, bestie, don't just assume. 🙈

🦋 SEE ALSO 🦋

The whole friend group, fr fr — everyone's linked up here:

• Kernel file ./drivers/net/ipa/gsi_trans.h
• struct gsi_trans(9)
• gsi_trans_pool_init(9)
• gsi_trans_pool_alloc(9)
• gsi_trans_pool_exit(9)
• gsi_trans_pool_init_dma(9)
• gsi_trans_pool_alloc_dma(9)
• gsi_trans_pool_exit_dma(9)
• gsi_channel_trans_idle(9)
• gsi_trans_free(9)
• gsi_trans_cmd_add(9)
• gsi_trans_page_add(9)
• gsi_trans_skb_add(9)
• gsi_trans_commit(9)
• gsi_trans_commit_wait(9)
• gsi_trans_read_byte(9)
• gsi_trans_read_byte_done(9)

and that's the whole page, bestie 🧚💜 Little sign-off moment: this one lives in ./drivers/net/ipa, dated October 2026 — go off, kernel docs, you ate 👑✨