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authorbms <bms@FreeBSD.org>2007-02-28 21:58:37 +0000
committerbms <bms@FreeBSD.org>2007-02-28 21:58:37 +0000
commitcbe2d2bcd1c7c247c552eb3856d6f592e550bb65 (patch)
treec2c50e7960362a5b85c69babc46e58e6866d1614 /sys/netinet6/ip6_mroute.c
parent277afd00bb2a1810c31e0d9d6bc4df55a490751a (diff)
downloadFreeBSD-src-cbe2d2bcd1c7c247c552eb3856d6f592e550bb65.zip
FreeBSD-src-cbe2d2bcd1c7c247c552eb3856d6f592e550bb65.tar.gz
Add comments about common idioms for cleanup pass at a later date.
Diffstat (limited to 'sys/netinet6/ip6_mroute.c')
-rw-r--r--sys/netinet6/ip6_mroute.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/netinet6/ip6_mroute.c b/sys/netinet6/ip6_mroute.c
index 01bad3f..daab702 100644
--- a/sys/netinet6/ip6_mroute.c
+++ b/sys/netinet6/ip6_mroute.c
@@ -121,6 +121,7 @@
static MALLOC_DEFINE(M_MRTABLE6, "mf6c", "multicast forwarding cache entry");
+/* XXX: this is a very common idiom; move to <sys/mbuf.h> ? */
#define M_HASCL(m) ((m)->m_flags & M_EXT)
static int ip6_mdq __P((struct mbuf *, struct ifnet *, struct mf6c *));
@@ -253,6 +254,7 @@ static int pim6;
/*
* Macros to compute elapsed time efficiently
* Borrowed from Van Jacobson's scheduling code
+ * XXX: replace with timersub() ?
*/
#define TV_DELTA(a, b, delta) do { \
int xxs; \
@@ -272,6 +274,7 @@ static int pim6;
} \
} while (/*CONSTCOND*/ 0)
+/* XXX: replace with timercmp(a, b, <) ? */
#define TV_LT(a, b) (((a).tv_usec < (b).tv_usec && \
(a).tv_sec <= (b).tv_sec) || (a).tv_sec < (b).tv_sec)
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