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Revision 21f1b8a6636c4dbde4aa1ec0343f42eaf653ffcc authored by Paolo Abeni on 26 April 2019, 10:50:44 UTC, committed by David S. Miller on 28 April 2019, 02:07:24 UTC 
udp: fix GRO reception in case of length mismatch
 
Currently, the UDP GRO code path does bad things on some edge
conditions - Aggregation can happen even on packet with different
lengths.

Fix the above by rewriting the 'complete' condition for GRO
packets. While at it, note explicitly that we allow merging the
first packet per burst below gso_size.

Reported-by: Sean Tong <seantong114@gmail.com>
Fixes: e20cf8d3f1f7 ("udp: implement GRO for plain UDP sockets.")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent fbef947
Raw File
ceph_debug.h 
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _FS_CEPH_DEBUG_H
#define _FS_CEPH_DEBUG_H

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/string.h>

#ifdef CONFIG_CEPH_LIB_PRETTYDEBUG

/*
 * wrap pr_debug to include a filename:lineno prefix on each line.
 * this incurs some overhead (kernel size and execution time) due to
 * the extra function call at each call site.
 */

# if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG)
#  define dout(fmt, ...)						\
	pr_debug("%.*s %12.12s:%-4d : " fmt,				\
		 8 - (int)sizeof(KBUILD_MODNAME), "    ",		\
		 kbasename(__FILE__), __LINE__, ##__VA_ARGS__)
# else
/* faux printk call just to see any compiler warnings. */
#  define dout(fmt, ...)	do {				\
		if (0)						\
			printk(KERN_DEBUG fmt, ##__VA_ARGS__);	\
	} while (0)
# endif

#else

/*
 * or, just wrap pr_debug
 */
# define dout(fmt, ...)	pr_debug(" " fmt, ##__VA_ARGS__)

#endif

#endif
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