Date: Sun, 11 Mar 2012 17:35:12 +0000 (UTC) From: Luigi Rizzo <luigi@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r232824 - head/sys/net Message-ID: <201203111735.q2BHZCww019970@svn.freebsd.org>
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Author: luigi Date: Sun Mar 11 17:35:12 2012 New Revision: 232824 URL: http://svn.freebsd.org/changeset/base/232824 Log: - remove an extra parenthesis in a closing brace; - add the macro NETMAP_RING_FIRST_RESERVED() which returns the index of the first non-released buffer in the ring (this is useful for code that retains buffers for some time instead of processing them immediately) Modified: head/sys/net/netmap_user.h Modified: head/sys/net/netmap_user.h ============================================================================== --- head/sys/net/netmap_user.h Sun Mar 11 15:58:27 2012 (r232823) +++ head/sys/net/netmap_user.h Sun Mar 11 17:35:12 2012 (r232824) @@ -77,11 +77,16 @@ #define NETMAP_BUF_IDX(ring, buf) \ ( ((char *)(buf) - ((char *)(ring) + (ring)->buf_ofs) ) / \ - (ring)->nr_buf_size) ) + (ring)->nr_buf_size ) #define NETMAP_RING_NEXT(r, i) \ ((i)+1 == (r)->num_slots ? 0 : (i) + 1 ) +#define NETMAP_RING_FIRST_RESERVED(r) \ + ( (r)->cur < (r)->reserved ? \ + (r)->cur + (r)->num_slots - (r)->reserved : \ + (r)->cur - (r)->reserved ) + /* * Return 1 if the given tx ring is empty. */
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