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kernel/os_mbuf: Add OS_MBUF_USRHDR_TO_MBUF #3463

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Merged
merged 1 commit into from
Aug 13, 2025
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kernel/os_mbuf: Add OS_MBUF_USRHDR_TO_MBUF #3463

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5 changes: 5 additions & 0 deletions kernel/os/include/os/os_mbuf.h
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Original file line number Diff line number Diff line change
Expand Up @@ -150,6 +150,11 @@ struct os_mqueue {
#define OS_MBUF_PKTHDR_TO_MBUF(__hdr) \
(struct os_mbuf *)((uint8_t *)(__hdr) - sizeof(struct os_mbuf))

/** Given a user packet header pointer, return a pointer to the mbuf */
#define OS_MBUF_USRHDR_TO_MBUF(__hdr) \
((struct os_mbuf *)((uint8_t *)OS_MBUF_PKTHDR_TO_MBUF(__hdr) - \
sizeof(struct os_mbuf_pkthdr)))

/**
* Gets the length of an entire mbuf chain. The specified mbuf must have a
* packet header.
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