Author: luigi
Date: Mon Nov 10 08:31:56 2014
New Revision: 274338
URL: https://svnweb.freebsd.org/changeset/base/274338
Log:
return kernel-supplied error if available.
Also fix field names in a comment.
Modified:
head/sys/net/netmap_user.h
Modified: head/sys/net/netmap_user.h
==============================================================================
--- head/sys/net/netmap_user.h Mon Nov 10 08:20:21 2014 (r274337)
+++ head/sys/net/netmap_user.h Mon Nov 10 08:31:56 2014 (r274338)
@@ -40,7 +40,7 @@
* From there:
* struct netmap_ring *NETMAP_TXRING(nifp, index)
* struct netmap_ring *NETMAP_RXRING(nifp, index)
- * we can access ring->nr_cur, ring->nr_avail, ring->nr_flags
+ * we can access ring->cur, ring->head, ring->tail, etc.
*
* ring->slot[i] gives us the i-th slot (we can access
* directly len, flags, buf_idx)
@@ -543,7 +543,8 @@ fail:
nm_close(d);
if (errmsg)
D("%s %s", errmsg, ifname);
- errno = EINVAL;
+ if (errno == 0)
+ errno = EINVAL;
return NULL;
}
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