From: Ben Gras <ben@minix3.org>
Date: Wed, 22 Jun 2005 15:22:34 +0000 (+0000)
Subject: Workaround for fishy situation that caused checksum on outgoing packets
X-Git-Tag: v3.1.0~713
X-Git-Url: http://zhaoyanbai.com/repos/%22http:/www.isc.org/icons/zpipe.c?a=commitdiff_plain;h=4ab7f34ea03a6423705c2460f3870323c3fbbff5;p=minix.git

Workaround for fishy situation that caused checksum on outgoing packets
to be broken in certain cases. (Seemingly when 2 short packets sent
back-to-back.) Buffer alignment seems to fix this ...
---

diff --git a/drivers/fxp/fxp.c b/drivers/fxp/fxp.c
index 8dfca6a1c..91f0b8ffa 100644
--- a/drivers/fxp/fxp.c
+++ b/drivers/fxp/fxp.c
@@ -806,10 +806,10 @@ fxp_t *fp;
 		assert(first_time);
 		first_time= 0;
 
-#if 0
-		assert(tot_bufsize <= buffer);
-#endif
+#define BUFALIGN	4096
+		assert(tot_bufsize <= sizeof(buffer)-BUFALIGN); 
 		buf= (phys_bytes)buffer;
+		buf += BUFALIGN - (buf % BUFALIGN);
 	}
 
 	fp->fxp_rx_buf= (struct rfd *)buf;