Author: rrs
Date: Tue Jun 12 13:31:32 2012
New Revision: 236957
URL: http://svn.freebsd.org/changeset/base/236957
Log:
Fix comment to better reflect how we are
cheating and using the csum_data. Also fix
style issues with the comments.
Modified:
head/sys/net/if_gif.c
Modified: head/sys/net/if_gif.c
==============================================================================
--- head/sys/net/if_gif.c Tue Jun 12 13:15:27 2012 (r236956)
+++ head/sys/net/if_gif.c Tue Jun 12 13:31:32 2012 (r236957)
@@ -385,8 +385,9 @@ keep_going:
m->m_pkthdr.len -= GIF_HDR_LEN6;
#endif
#endif
- /* Now pull back the af in packet that
- * was saved in the address location.
+ /*
+ * Now pull back the af that we
+ * stashed in the csum_data.
*/
af = m->m_pkthdr.csum_data;
@@ -504,9 +505,12 @@ gif_output(ifp, m, dst, ro)
dst->sa_family = af;
}
af = dst->sa_family;
- /* Now save the af in the inbound pkt csum
- * data, this is a cheat since really
- * gif tunnels don't do offload.
+ /*
+ * Now save the af in the inbound pkt csum
+ * data, this is a cheat since we are using
+ * the inbound csum_data field to carry the
+ * af over to the gif_start() routine, avoiding
+ * using yet another mtag.
*/
m->m_pkthdr.csum_data = af;
if (!(ifp->if_flags & IFF_UP) ||
@@ -516,7 +520,8 @@ gif_output(ifp, m, dst, ro)
goto end;
}
#ifdef ALTQ
- /* Make altq aware of the bytes we will add
+ /*
+ * Make altq aware of the bytes we will add
* when we actually send it.
*/
#ifdef INET
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