skb_splice_from_iter(9)

🌸 skb_splice_from_iter(9) 🌸

okay bestie, welcome to the Kernel API Manual ✨ this one's a lil kernel helper and she's lowkey iconic — let's get into it 💅

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💖 NAME 💖

skb_splice_from_iter — splice (or copy) pages to skbuff 🫶

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✨ SYNOPSIS ✨

ssize_t skb_splice_from_iter (struct sk_buff *skb , struct iov_iter
*iter , ssize_t maxsize );

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🎀 ARGUMENTS 🎀

• skb — the buffer you're adding pages to 🧚
• iter — the iterator that represents the pages being added 👑
• maxsize — the maximum amount of pages that can be added ⭐

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🦋 DESCRIPTION 🦋

so this is the common helper function for supporting MSG_SPLICE_PAGES, periodt 💅 she extracts pages from an iterator and adds them to the socket buffer if possible — and if that's not possible (like, say, when they're slab pages 🙈), she copies them to fragments instead 🔥

Returns the amount of data spliced/copied, or -EMSGSIZE if there's not enough space in the buffer to transfer anything 😭

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🌈 SEE ALSO 🌈

Kernel file ./net/core/skbuff.c

• drop_reasons_register_subsys(9)
• drop_reasons_unregister_subsys(9)
• skb_panic(9)
• napi_skb_cache_get_bulk(9)
• __build_skb(9)
• build_skb_around(9)
• __napi_build_skb(9)
• napi_build_skb(9)
• __alloc_skb(9)
• __netdev_alloc_skb(9)
• napi_alloc_skb(9)
• skb_pp_cow_data(9)
• skb_pp_frag_ref(9)
• __kfree_skb(9)
• sk_skb_reason_drop(9)
• skb_tx_error(9)
• consume_skb(9)
• __consume_stateless_skb(9)
• napi_consume_skb(9)
• alloc_skb_for_msg(9)
• skb_morph(9)
• skb_copy_ubufs(9)
• skb_clone(9)
• skb_copy(9)
• __pskb_copy_fclone(9)
• pskb_expand_head(9)
• skb_expand_head(9)
• skb_copy_expand(9)
• __skb_pad(9)
• pskb_put(9)
• skb_put(9)
• skb_push(9)
• skb_pull(9)
• skb_pull_data(9)
• skb_trim(9)
• __pskb_pull_tail(9)
• skb_copy_bits(9)
• skb_store_bits(9)
• skb_zerocopy(9)
• skb_dequeue(9)
• skb_dequeue_tail(9)
• skb_queue_purge_reason(9)
• skb_rbtree_purge(9)
• skb_queue_head(9)
• skb_queue_tail(9)
• skb_unlink(9)
• skb_append(9)
• skb_split(9)
• skb_shift(9)
• skb_prepare_seq_read(9)
• skb_seq_read(9)
• skb_abort_seq_read(9)
• skb_copy_seq_read(9)
• skb_find_text(9)
• skb_pull_rcsum(9)
• skb_segment(9)
• skb_to_sgvec(9)
• skb_cow_data(9)
• skb_clone_sk(9)
• skb_partial_csum_set(9)
• skb_checksum_setup(9)
• skb_checksum_maybe_trim(9)
• skb_checksum_trimmed(9)
• skb_try_coalesce(9)
• skb_scrub_packet(9)
• skb_eth_pop(9)
• skb_eth_push(9)
• skb_mpls_push(9)
• skb_mpls_pop(9)
• skb_mpls_update_lse(9)
• skb_mpls_dec_ttl(9)
• alloc_skb_with_frags(9)
• skb_condense(9)
• __skb_ext_alloc(9)
• __skb_ext_set(9)
• skb_ext_add(9)
• skb_attempt_defer_free(9)

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that's the whole vibe check, bestie — this page came from ./net/core, dated October 2026, and she's filed under skb_splice_from_iter(9) 🍓 go forth and splice responsibly, iykyk 💜✨