Author: rwatson Date: Sat Jun 20 18:27:19 2009 New Revision: 194549 URL: http://svn.freebsd.org/changeset/base/194549
Log: Remove definition of dtom(), which converted a data pointer into a pointer to the containing mbuf. This eliminates a strong assumption about the layout of network buffer memory, giving us greater flexibility to revise mbuf semantics in the future. Modified: head/sys/sys/mbuf.h Modified: head/sys/sys/mbuf.h ============================================================================== --- head/sys/sys/mbuf.h Sat Jun 20 18:24:29 2009 (r194548) +++ head/sys/sys/mbuf.h Sat Jun 20 18:27:19 2009 (r194549) @@ -60,12 +60,12 @@ #ifdef _KERNEL /*- - * Macros for type conversion: + * Macro for type conversion: convert mbuf pointer to data pointer of correct + * type: + * * mtod(m, t) -- Convert mbuf pointer to data pointer of correct type. - * dtom(x) -- Convert data pointer within mbuf to mbuf pointer (XXX). */ #define mtod(m, t) ((t)((m)->m_data)) -#define dtom(x) ((struct mbuf *)((intptr_t)(x) & ~(MSIZE-1))) /* * Argument structure passed to UMA routines during mbuf and packet _______________________________________________ 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"
