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| author | luigi <luigi@FreeBSD.org> | 2002-06-22 11:29:08 +0000 |
|---|---|---|
| committer | luigi <luigi@FreeBSD.org> | 2002-06-22 11:29:08 +0000 |
| commit | ae0152f4c1645e2948481426e810382b76d0ebda (patch) | |
| tree | 17a572180cafbfd90d419cbc57b0101f8d23209f | |
| parent | 2719fbacdb1bb5e6498b73e5a76925ceb01f983b (diff) | |
| download | FreeBSD-src-ae0152f4c1645e2948481426e810382b76d0ebda.zip FreeBSD-src-ae0152f4c1645e2948481426e810382b76d0ebda.tar.gz | |
Define an mbuf type, MT_TAG, used for volatile annotations
prepended to mbuf chains in the network stack.
Reuse a previoulsy unused value to avoid changes in other
data structures.
| -rw-r--r-- | sys/sys/mbuf.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sys/sys/mbuf.h b/sys/sys/mbuf.h index dec48ec..92e0167 100644 --- a/sys/sys/mbuf.h +++ b/sys/sys/mbuf.h @@ -204,6 +204,7 @@ struct mbuf { #define MT_RIGHTS 12 /* access rights */ #define MT_IFADDR 13 /* interface address */ #endif +#define MT_TAG 13 /* volatile metadata associated to pkts */ #define MT_CONTROL 14 /* extra-data protocol message */ #define MT_OOBDATA 15 /* expedited data */ #define MT_NTYPES 16 /* number of mbuf types for mbtypes[] */ @@ -419,10 +420,10 @@ struct mauxtag { * * As a temporary and low impact solution to replace the even uglier * approach used so far in some parts of the network stack (which relies - * on global variables), these annotations are stored in MT_CONTROL + * on global variables), these annotations are stored in MT_TAG * mbufs (or lookalikes) prepended to the actual mbuf chain. * - * m_type = MT_CONTROL + * m_type = MT_TAG * m_flags = m_tag_id * m_next = next buffer in chain. * |
