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Date:   Fri, 21 Aug 2020 20:28:59 +0800
From:   kernel test robot <lkp@...el.com>
To:     Tom Parkin <tparkin@...alix.com>, netdev@...r.kernel.org
Cc:     kbuild-all@...ts.01.org, jchapman@...alix.com,
        Tom Parkin <tparkin@...alix.com>
Subject: Re: [PATCH 1/9] l2tp: don't log data frames

Hi Tom,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on net-next/master]

url:    https://github.com/0day-ci/linux/commits/Tom-Parkin/l2tp-replace-custom-logging-code-with-tracepoints/20200821-184919
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git d0a84e1f38d9d6ae2dfab0b6c2407d667a265aa5
config: riscv-randconfig-r035-20200820 (attached as .config)
compiler: riscv32-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

   net/l2tp/l2tp_core.c: In function 'l2tp_recv_common':
>> net/l2tp/l2tp_core.c:663:14: warning: variable 'nr' set but not used [-Wunused-but-set-variable]
     663 |  u32 ns = 0, nr = 0;
         |              ^~

# https://github.com/0day-ci/linux/commit/5b9d9c3057638c81876e600aa2210e4a3e35fa8d
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Tom-Parkin/l2tp-replace-custom-logging-code-with-tracepoints/20200821-184919
git checkout 5b9d9c3057638c81876e600aa2210e4a3e35fa8d
vim +/nr +663 net/l2tp/l2tp_core.c

b6dc01a43aaca24 James Chapman          2013-07-02  598  
f7faffa3ff8ef6a James Chapman          2010-04-02  599  /* Do receive processing of L2TP data frames. We handle both L2TPv2
f7faffa3ff8ef6a James Chapman          2010-04-02  600   * and L2TPv3 data frames here.
f7faffa3ff8ef6a James Chapman          2010-04-02  601   *
f7faffa3ff8ef6a James Chapman          2010-04-02  602   * L2TPv2 Data Message Header
f7faffa3ff8ef6a James Chapman          2010-04-02  603   *
f7faffa3ff8ef6a James Chapman          2010-04-02  604   *  0                   1                   2                   3
f7faffa3ff8ef6a James Chapman          2010-04-02  605   *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
f7faffa3ff8ef6a James Chapman          2010-04-02  606   * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
f7faffa3ff8ef6a James Chapman          2010-04-02  607   * |T|L|x|x|S|x|O|P|x|x|x|x|  Ver  |          Length (opt)         |
f7faffa3ff8ef6a James Chapman          2010-04-02  608   * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
f7faffa3ff8ef6a James Chapman          2010-04-02  609   * |           Tunnel ID           |           Session ID          |
f7faffa3ff8ef6a James Chapman          2010-04-02  610   * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
f7faffa3ff8ef6a James Chapman          2010-04-02  611   * |             Ns (opt)          |             Nr (opt)          |
f7faffa3ff8ef6a James Chapman          2010-04-02  612   * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
f7faffa3ff8ef6a James Chapman          2010-04-02  613   * |      Offset Size (opt)        |    Offset pad... (opt)
f7faffa3ff8ef6a James Chapman          2010-04-02  614   * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
f7faffa3ff8ef6a James Chapman          2010-04-02  615   *
f7faffa3ff8ef6a James Chapman          2010-04-02  616   * Data frames are marked by T=0. All other fields are the same as
f7faffa3ff8ef6a James Chapman          2010-04-02  617   * those in L2TP control frames.
f7faffa3ff8ef6a James Chapman          2010-04-02  618   *
f7faffa3ff8ef6a James Chapman          2010-04-02  619   * L2TPv3 Data Message Header
f7faffa3ff8ef6a James Chapman          2010-04-02  620   *
f7faffa3ff8ef6a James Chapman          2010-04-02  621   * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
f7faffa3ff8ef6a James Chapman          2010-04-02  622   * |                      L2TP Session Header                      |
f7faffa3ff8ef6a James Chapman          2010-04-02  623   * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
f7faffa3ff8ef6a James Chapman          2010-04-02  624   * |                      L2-Specific Sublayer                     |
f7faffa3ff8ef6a James Chapman          2010-04-02  625   * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
f7faffa3ff8ef6a James Chapman          2010-04-02  626   * |                        Tunnel Payload                      ...
f7faffa3ff8ef6a James Chapman          2010-04-02  627   * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
f7faffa3ff8ef6a James Chapman          2010-04-02  628   *
f7faffa3ff8ef6a James Chapman          2010-04-02  629   * L2TPv3 Session Header Over IP
f7faffa3ff8ef6a James Chapman          2010-04-02  630   *
f7faffa3ff8ef6a James Chapman          2010-04-02  631   *  0                   1                   2                   3
f7faffa3ff8ef6a James Chapman          2010-04-02  632   *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
f7faffa3ff8ef6a James Chapman          2010-04-02  633   * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
f7faffa3ff8ef6a James Chapman          2010-04-02  634   * |                           Session ID                          |
f7faffa3ff8ef6a James Chapman          2010-04-02  635   * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
f7faffa3ff8ef6a James Chapman          2010-04-02  636   * |               Cookie (optional, maximum 64 bits)...
f7faffa3ff8ef6a James Chapman          2010-04-02  637   * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
f7faffa3ff8ef6a James Chapman          2010-04-02  638   *                                                                 |
f7faffa3ff8ef6a James Chapman          2010-04-02  639   * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
f7faffa3ff8ef6a James Chapman          2010-04-02  640   *
f7faffa3ff8ef6a James Chapman          2010-04-02  641   * L2TPv3 L2-Specific Sublayer Format
f7faffa3ff8ef6a James Chapman          2010-04-02  642   *
f7faffa3ff8ef6a James Chapman          2010-04-02  643   *  0                   1                   2                   3
f7faffa3ff8ef6a James Chapman          2010-04-02  644   *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
f7faffa3ff8ef6a James Chapman          2010-04-02  645   * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
f7faffa3ff8ef6a James Chapman          2010-04-02  646   * |x|S|x|x|x|x|x|x|              Sequence Number                  |
f7faffa3ff8ef6a James Chapman          2010-04-02  647   * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
f7faffa3ff8ef6a James Chapman          2010-04-02  648   *
23fe846f9a48d53 Guillaume Nault        2018-01-05  649   * Cookie value and sublayer format are negotiated with the peer when
23fe846f9a48d53 Guillaume Nault        2018-01-05  650   * the session is set up. Unlike L2TPv2, we do not need to parse the
23fe846f9a48d53 Guillaume Nault        2018-01-05  651   * packet header to determine if optional fields are present.
f7faffa3ff8ef6a James Chapman          2010-04-02  652   *
f7faffa3ff8ef6a James Chapman          2010-04-02  653   * Caller must already have parsed the frame and determined that it is
f7faffa3ff8ef6a James Chapman          2010-04-02  654   * a data (not control) frame before coming here. Fields up to the
f7faffa3ff8ef6a James Chapman          2010-04-02  655   * session-id have already been parsed and ptr points to the data
f7faffa3ff8ef6a James Chapman          2010-04-02  656   * after the session-id.
fd558d186df2c13 James Chapman          2010-04-02  657   */
f7faffa3ff8ef6a James Chapman          2010-04-02  658  void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb,
f7faffa3ff8ef6a James Chapman          2010-04-02  659  		      unsigned char *ptr, unsigned char *optr, u16 hdrflags,
2b139e6b1ec86e1 Guillaume Nault        2018-07-25  660  		      int length)
fd558d186df2c13 James Chapman          2010-04-02  661  {
f7faffa3ff8ef6a James Chapman          2010-04-02  662  	struct l2tp_tunnel *tunnel = session->tunnel;
95075150d0bdaa7 Tom Parkin             2020-07-24 @663  	u32 ns = 0, nr = 0;
fd558d186df2c13 James Chapman          2010-04-02  664  	int offset;
fd558d186df2c13 James Chapman          2010-04-02  665  
f7faffa3ff8ef6a James Chapman          2010-04-02  666  	/* Parse and check optional cookie */
f7faffa3ff8ef6a James Chapman          2010-04-02  667  	if (session->peer_cookie_len > 0) {
f7faffa3ff8ef6a James Chapman          2010-04-02  668  		if (memcmp(ptr, &session->peer_cookie[0], session->peer_cookie_len)) {
a4ca44fa578c7c7 Joe Perches            2012-05-16  669  			l2tp_info(tunnel, L2TP_MSG_DATA,
f7faffa3ff8ef6a James Chapman          2010-04-02  670  				  "%s: cookie mismatch (%u/%u). Discarding.\n",
a4ca44fa578c7c7 Joe Perches            2012-05-16  671  				  tunnel->name, tunnel->tunnel_id,
a4ca44fa578c7c7 Joe Perches            2012-05-16  672  				  session->session_id);
7b7c0719cd7afee Tom Parkin             2013-03-19  673  			atomic_long_inc(&session->stats.rx_cookie_discards);
f7faffa3ff8ef6a James Chapman          2010-04-02  674  			goto discard;
f7faffa3ff8ef6a James Chapman          2010-04-02  675  		}
f7faffa3ff8ef6a James Chapman          2010-04-02  676  		ptr += session->peer_cookie_len;
f7faffa3ff8ef6a James Chapman          2010-04-02  677  	}
f7faffa3ff8ef6a James Chapman          2010-04-02  678  
fd558d186df2c13 James Chapman          2010-04-02  679  	/* Handle the optional sequence numbers. Sequence numbers are
fd558d186df2c13 James Chapman          2010-04-02  680  	 * in different places for L2TPv2 and L2TPv3.
fd558d186df2c13 James Chapman          2010-04-02  681  	 *
fd558d186df2c13 James Chapman          2010-04-02  682  	 * If we are the LAC, enable/disable sequence numbers under
fd558d186df2c13 James Chapman          2010-04-02  683  	 * the control of the LNS.  If no sequence numbers present but
fd558d186df2c13 James Chapman          2010-04-02  684  	 * we were expecting them, discard frame.
fd558d186df2c13 James Chapman          2010-04-02  685  	 */
fd558d186df2c13 James Chapman          2010-04-02  686  	L2TP_SKB_CB(skb)->has_seq = 0;
f7faffa3ff8ef6a James Chapman          2010-04-02  687  	if (tunnel->version == L2TP_HDR_VER_2) {
fd558d186df2c13 James Chapman          2010-04-02  688  		if (hdrflags & L2TP_HDRFLAG_S) {
f7faffa3ff8ef6a James Chapman          2010-04-02  689  			ns = ntohs(*(__be16 *)ptr);
fd558d186df2c13 James Chapman          2010-04-02  690  			ptr += 2;
fd558d186df2c13 James Chapman          2010-04-02  691  			nr = ntohs(*(__be16 *)ptr);
fd558d186df2c13 James Chapman          2010-04-02  692  			ptr += 2;
fd558d186df2c13 James Chapman          2010-04-02  693  
fd558d186df2c13 James Chapman          2010-04-02  694  			/* Store L2TP info in the skb */
fd558d186df2c13 James Chapman          2010-04-02  695  			L2TP_SKB_CB(skb)->ns = ns;
fd558d186df2c13 James Chapman          2010-04-02  696  			L2TP_SKB_CB(skb)->has_seq = 1;
fd558d186df2c13 James Chapman          2010-04-02  697  		}
f7faffa3ff8ef6a James Chapman          2010-04-02  698  	} else if (session->l2specific_type == L2TP_L2SPECTYPE_DEFAULT) {
f7faffa3ff8ef6a James Chapman          2010-04-02  699  		u32 l2h = ntohl(*(__be32 *)ptr);
f7faffa3ff8ef6a James Chapman          2010-04-02  700  
f7faffa3ff8ef6a James Chapman          2010-04-02  701  		if (l2h & 0x40000000) {
f7faffa3ff8ef6a James Chapman          2010-04-02  702  			ns = l2h & 0x00ffffff;
f7faffa3ff8ef6a James Chapman          2010-04-02  703  
f7faffa3ff8ef6a James Chapman          2010-04-02  704  			/* Store L2TP info in the skb */
f7faffa3ff8ef6a James Chapman          2010-04-02  705  			L2TP_SKB_CB(skb)->ns = ns;
f7faffa3ff8ef6a James Chapman          2010-04-02  706  			L2TP_SKB_CB(skb)->has_seq = 1;
f7faffa3ff8ef6a James Chapman          2010-04-02  707  		}
62e7b6a57c7b9bf Lorenzo Bianconi       2018-01-16  708  		ptr += 4;
f7faffa3ff8ef6a James Chapman          2010-04-02  709  	}
f7faffa3ff8ef6a James Chapman          2010-04-02  710  
fd558d186df2c13 James Chapman          2010-04-02  711  	if (L2TP_SKB_CB(skb)->has_seq) {
20dcb1107ab1a34 Tom Parkin             2020-07-22  712  		/* Received a packet with sequence numbers. If we're the LAC,
fd558d186df2c13 James Chapman          2010-04-02  713  		 * check if we sre sending sequence numbers and if not,
fd558d186df2c13 James Chapman          2010-04-02  714  		 * configure it so.
fd558d186df2c13 James Chapman          2010-04-02  715  		 */
6c0ec37b8283463 Tom Parkin             2020-07-23  716  		if (!session->lns_mode && !session->send_seq) {
a4ca44fa578c7c7 Joe Perches            2012-05-16  717  			l2tp_info(session, L2TP_MSG_SEQ,
fd558d186df2c13 James Chapman          2010-04-02  718  				  "%s: requested to enable seq numbers by LNS\n",
fd558d186df2c13 James Chapman          2010-04-02  719  				  session->name);
3f9b9770b479986 Asbjørn Sloth Tønnesen 2016-11-07  720  			session->send_seq = 1;
f7faffa3ff8ef6a James Chapman          2010-04-02  721  			l2tp_session_set_header_len(session, tunnel->version);
fd558d186df2c13 James Chapman          2010-04-02  722  		}
fd558d186df2c13 James Chapman          2010-04-02  723  	} else {
fd558d186df2c13 James Chapman          2010-04-02  724  		/* No sequence numbers.
fd558d186df2c13 James Chapman          2010-04-02  725  		 * If user has configured mandatory sequence numbers, discard.
fd558d186df2c13 James Chapman          2010-04-02  726  		 */
fd558d186df2c13 James Chapman          2010-04-02  727  		if (session->recv_seq) {
a4ca44fa578c7c7 Joe Perches            2012-05-16  728  			l2tp_warn(session, L2TP_MSG_SEQ,
a4ca44fa578c7c7 Joe Perches            2012-05-16  729  				  "%s: recv data has no seq numbers when required. Discarding.\n",
a4ca44fa578c7c7 Joe Perches            2012-05-16  730  				  session->name);
7b7c0719cd7afee Tom Parkin             2013-03-19  731  			atomic_long_inc(&session->stats.rx_seq_discards);
fd558d186df2c13 James Chapman          2010-04-02  732  			goto discard;
fd558d186df2c13 James Chapman          2010-04-02  733  		}
fd558d186df2c13 James Chapman          2010-04-02  734  
fd558d186df2c13 James Chapman          2010-04-02  735  		/* If we're the LAC and we're sending sequence numbers, the
fd558d186df2c13 James Chapman          2010-04-02  736  		 * LNS has requested that we no longer send sequence numbers.
fd558d186df2c13 James Chapman          2010-04-02  737  		 * If we're the LNS and we're sending sequence numbers, the
fd558d186df2c13 James Chapman          2010-04-02  738  		 * LAC is broken. Discard the frame.
fd558d186df2c13 James Chapman          2010-04-02  739  		 */
6c0ec37b8283463 Tom Parkin             2020-07-23  740  		if (!session->lns_mode && session->send_seq) {
a4ca44fa578c7c7 Joe Perches            2012-05-16  741  			l2tp_info(session, L2TP_MSG_SEQ,
fd558d186df2c13 James Chapman          2010-04-02  742  				  "%s: requested to disable seq numbers by LNS\n",
fd558d186df2c13 James Chapman          2010-04-02  743  				  session->name);
fd558d186df2c13 James Chapman          2010-04-02  744  			session->send_seq = 0;
f7faffa3ff8ef6a James Chapman          2010-04-02  745  			l2tp_session_set_header_len(session, tunnel->version);
fd558d186df2c13 James Chapman          2010-04-02  746  		} else if (session->send_seq) {
a4ca44fa578c7c7 Joe Perches            2012-05-16  747  			l2tp_warn(session, L2TP_MSG_SEQ,
a4ca44fa578c7c7 Joe Perches            2012-05-16  748  				  "%s: recv data has no seq numbers when required. Discarding.\n",
a4ca44fa578c7c7 Joe Perches            2012-05-16  749  				  session->name);
7b7c0719cd7afee Tom Parkin             2013-03-19  750  			atomic_long_inc(&session->stats.rx_seq_discards);
fd558d186df2c13 James Chapman          2010-04-02  751  			goto discard;
fd558d186df2c13 James Chapman          2010-04-02  752  		}
fd558d186df2c13 James Chapman          2010-04-02  753  	}
fd558d186df2c13 James Chapman          2010-04-02  754  
900631ee6a2651d James Chapman          2018-01-03  755  	/* Session data offset is defined only for L2TPv2 and is
900631ee6a2651d James Chapman          2018-01-03  756  	 * indicated by an optional 16-bit value in the header.
f7faffa3ff8ef6a James Chapman          2010-04-02  757  	 */
f7faffa3ff8ef6a James Chapman          2010-04-02  758  	if (tunnel->version == L2TP_HDR_VER_2) {
fd558d186df2c13 James Chapman          2010-04-02  759  		/* If offset bit set, skip it. */
fd558d186df2c13 James Chapman          2010-04-02  760  		if (hdrflags & L2TP_HDRFLAG_O) {
fd558d186df2c13 James Chapman          2010-04-02  761  			offset = ntohs(*(__be16 *)ptr);
fd558d186df2c13 James Chapman          2010-04-02  762  			ptr += 2 + offset;
fd558d186df2c13 James Chapman          2010-04-02  763  		}
900631ee6a2651d James Chapman          2018-01-03  764  	}
fd558d186df2c13 James Chapman          2010-04-02  765  
fd558d186df2c13 James Chapman          2010-04-02  766  	offset = ptr - optr;
fd558d186df2c13 James Chapman          2010-04-02  767  	if (!pskb_may_pull(skb, offset))
fd558d186df2c13 James Chapman          2010-04-02  768  		goto discard;
fd558d186df2c13 James Chapman          2010-04-02  769  
fd558d186df2c13 James Chapman          2010-04-02  770  	__skb_pull(skb, offset);
fd558d186df2c13 James Chapman          2010-04-02  771  
fd558d186df2c13 James Chapman          2010-04-02  772  	/* Prepare skb for adding to the session's reorder_q.  Hold
fd558d186df2c13 James Chapman          2010-04-02  773  	 * packets for max reorder_timeout or 1 second if not
fd558d186df2c13 James Chapman          2010-04-02  774  	 * reordering.
fd558d186df2c13 James Chapman          2010-04-02  775  	 */
fd558d186df2c13 James Chapman          2010-04-02  776  	L2TP_SKB_CB(skb)->length = length;
fd558d186df2c13 James Chapman          2010-04-02  777  	L2TP_SKB_CB(skb)->expires = jiffies +
fd558d186df2c13 James Chapman          2010-04-02  778  		(session->reorder_timeout ? session->reorder_timeout : HZ);
fd558d186df2c13 James Chapman          2010-04-02  779  
fd558d186df2c13 James Chapman          2010-04-02  780  	/* Add packet to the session's receive queue. Reordering is done here, if
fd558d186df2c13 James Chapman          2010-04-02  781  	 * enabled. Saved L2TP protocol info is stored in skb->sb[].
fd558d186df2c13 James Chapman          2010-04-02  782  	 */
fd558d186df2c13 James Chapman          2010-04-02  783  	if (L2TP_SKB_CB(skb)->has_seq) {
b6dc01a43aaca24 James Chapman          2013-07-02  784  		if (l2tp_recv_data_seq(session, skb))
fd558d186df2c13 James Chapman          2010-04-02  785  			goto discard;
fd558d186df2c13 James Chapman          2010-04-02  786  	} else {
fd558d186df2c13 James Chapman          2010-04-02  787  		/* No sequence numbers. Add the skb to the tail of the
fd558d186df2c13 James Chapman          2010-04-02  788  		 * reorder queue. This ensures that it will be
fd558d186df2c13 James Chapman          2010-04-02  789  		 * delivered after all previous sequenced skbs.
fd558d186df2c13 James Chapman          2010-04-02  790  		 */
fd558d186df2c13 James Chapman          2010-04-02  791  		skb_queue_tail(&session->reorder_q, skb);
fd558d186df2c13 James Chapman          2010-04-02  792  	}
fd558d186df2c13 James Chapman          2010-04-02  793  
fd558d186df2c13 James Chapman          2010-04-02  794  	/* Try to dequeue as many skbs from reorder_q as we can. */
fd558d186df2c13 James Chapman          2010-04-02  795  	l2tp_recv_dequeue(session);
fd558d186df2c13 James Chapman          2010-04-02  796  
f7faffa3ff8ef6a James Chapman          2010-04-02  797  	return;
fd558d186df2c13 James Chapman          2010-04-02  798  
fd558d186df2c13 James Chapman          2010-04-02  799  discard:
7b7c0719cd7afee Tom Parkin             2013-03-19  800  	atomic_long_inc(&session->stats.rx_errors);
fd558d186df2c13 James Chapman          2010-04-02  801  	kfree_skb(skb);
f7faffa3ff8ef6a James Chapman          2010-04-02  802  }
ca7885dbcd899e6 Tom Parkin             2020-07-28  803  EXPORT_SYMBOL_GPL(l2tp_recv_common);
f7faffa3ff8ef6a James Chapman          2010-04-02  804  

---
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