From b2c374decbc3ed1ad39429b3213078a1fcdb0bb3 Mon Sep 17 00:00:00 2001
From: Brian Somers <brian@FreeBSD.org>
Date: Mon, 9 Oct 2000 22:49:44 +0000
Subject: [PATCH] If write() gives -1/ENOBUFS, keep the packet and sleep for
 1/10th of a second before attempting to write it again (unless there's
 something else to do instead).

---
 usr.sbin/ppp/physical.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/usr.sbin/ppp/physical.c b/usr.sbin/ppp/physical.c
index e605131397a..c0979a98c29 100644
--- a/usr.sbin/ppp/physical.c
+++ b/usr.sbin/ppp/physical.c
@@ -408,12 +408,13 @@ physical_DescriptorWrite(struct fdescriptor *d, struct bundle *bundle,
 	p->out = m_free(p->out);
       result = 1;
     } else if (nw < 0) {
-      if (errno != EAGAIN) {
+      if (errno == EAGAIN)
+        result = 1;
+      else if (errno != ENOBUFS) {
 	log_Printf(LogPHASE, "%s: write (%d): %s\n", p->link.name,
                    p->fd, strerror(errno));
         datalink_Down(p->dl, CLOSE_NORMAL);
       }
-      result = 1;
     }
     /* else we shouldn't really have been called !  select() is broken ! */
   }