Author: glebius Date: Sun Mar 17 07:39:45 2013 New Revision: 248417 URL: http://svnweb.freebsd.org/changeset/base/248417
Log: Add MEXT_ALIGN() macro, similar to M_ALIGN() and MH_ALIGN(), but for mbufs with external buffer. Modified: head/sys/sys/mbuf.h Modified: head/sys/sys/mbuf.h ============================================================================== --- head/sys/sys/mbuf.h Sun Mar 17 07:37:10 2013 (r248416) +++ head/sys/sys/mbuf.h Sun Mar 17 07:39:45 2013 (r248417) @@ -195,7 +195,7 @@ struct mbuf { #define M_FIRSTFRAG 0x00001000 /* packet is first fragment */ #define M_LASTFRAG 0x00002000 /* packet is last fragment */ #define M_SKIP_FIREWALL 0x00004000 /* skip firewall processing */ -#define M_FREELIST 0x00008000 /* mbuf is on the free list */ + /* 0x00008000 free */ #define M_VLANTAG 0x00010000 /* ether_vtag is valid */ #define M_PROMISC 0x00020000 /* packet was not for us */ #define M_NOFREE 0x00040000 /* do not free mbuf, embedded in cluster */ @@ -708,6 +708,18 @@ m_last(struct mbuf *m) } while (0) /* + * As above, for mbuf with external storage. + */ +#define MEXT_ALIGN(m, len) do { \ + KASSERT((m)->m_flags & M_EXT, \ + ("%s: MEXT_ALIGN not an M_EXT mbuf", __func__)); \ + KASSERT((m)->m_data == (m)->m_ext.ext_buf, \ + ("%s: MEXT_ALIGN not a virgin mbuf", __func__)); \ + (m)->m_data += ((m)->m_ext.ext_size - (len)) & \ + ~(sizeof(long) - 1); \ +} while (0) + +/* * Compute the amount of space available before the current start of data in * an mbuf. * _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"