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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/net/sctp/chunk.c
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..
@@ -1,25 +1,10 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /* SCTP kernel implementation
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  * (C) Copyright IBM Corp. 2003, 2004
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  *
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  * This file is part of the SCTP kernel implementation
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  *
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  * This file contains the code relating the chunk abstraction.
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- *
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- * This SCTP implementation is free software;
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- * you can redistribute it and/or modify it under the terms of
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- * the GNU General Public License as published by
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- * the Free Software Foundation; either version 2, or (at your option)
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- * any later version.
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- *
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- * This SCTP implementation is distributed in the hope that it
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- * will be useful, but WITHOUT ANY WARRANTY; without even the implied
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- *                 ************************
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- * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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- * See the GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with GNU CC; see the file COPYING.  If not, see
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- * <http://www.gnu.org/licenses/>.
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  *
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  * Please send any bug reports or fixes you make to the
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  * email address(es):
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@@ -86,43 +71,39 @@
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 /* Final destructruction of datamsg memory. */
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 static void sctp_datamsg_destroy(struct sctp_datamsg *msg)
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 {
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+	struct sctp_association *asoc = NULL;
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 	struct list_head *pos, *temp;
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 	struct sctp_chunk *chunk;
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-	struct sctp_sock *sp;
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 	struct sctp_ulpevent *ev;
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-	struct sctp_association *asoc = NULL;
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-	int error = 0, notify;
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-
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-	/* If we failed, we may need to notify. */
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-	notify = msg->send_failed ? -1 : 0;
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+	int error, sent;
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 	/* Release all references. */
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 	list_for_each_safe(pos, temp, &msg->chunks) {
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 		list_del_init(pos);
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 		chunk = list_entry(pos, struct sctp_chunk, frag_list);
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-		/* Check whether we _really_ need to notify. */
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-		if (notify < 0) {
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-			asoc = chunk->asoc;
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-			if (msg->send_error)
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-				error = msg->send_error;
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-			else
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-				error = asoc->outqueue.error;
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-			sp = sctp_sk(asoc->base.sk);
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-			notify = sctp_ulpevent_type_enabled(SCTP_SEND_FAILED,
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-							    &sp->subscribe);
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+		if (!msg->send_failed) {
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+			sctp_chunk_put(chunk);
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+			continue;
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 		}
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-		/* Generate a SEND FAILED event only if enabled. */
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-		if (notify > 0) {
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-			int sent;
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-			if (chunk->has_tsn)
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-				sent = SCTP_DATA_SENT;
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-			else
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-				sent = SCTP_DATA_UNSENT;
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+		asoc = chunk->asoc;
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+		error = msg->send_error ?: asoc->outqueue.error;
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+		sent = chunk->has_tsn ? SCTP_DATA_SENT : SCTP_DATA_UNSENT;
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+		if (sctp_ulpevent_type_enabled(asoc->subscribe,
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+					       SCTP_SEND_FAILED)) {
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 			ev = sctp_ulpevent_make_send_failed(asoc, chunk, sent,
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 							    error, GFP_ATOMIC);
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+			if (ev)
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+				asoc->stream.si->enqueue_event(&asoc->ulpq, ev);
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+		}
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+
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+		if (sctp_ulpevent_type_enabled(asoc->subscribe,
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+					       SCTP_SEND_FAILED_EVENT)) {
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+			ev = sctp_ulpevent_make_send_failed_event(asoc, chunk,
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+								  sent, error,
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+								  GFP_ATOMIC);
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 			if (ev)
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 				asoc->stream.si->enqueue_event(&asoc->ulpq, ev);
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 		}
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@@ -194,11 +175,11 @@
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 	if (unlikely(!max_data)) {
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 		max_data = sctp_min_frag_point(sctp_sk(asoc->base.sk),
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 					       sctp_datachk_len(&asoc->stream));
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-		pr_warn_ratelimited("%s: asoc:%p frag_point is zero, forcing max_data to default minimum (%Zu)",
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+		pr_warn_ratelimited("%s: asoc:%p frag_point is zero, forcing max_data to default minimum (%zu)",
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 				    __func__, asoc, max_data);
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 	}
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-	/* If the the peer requested that we authenticate DATA chunks
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+	/* If the peer requested that we authenticate DATA chunks
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 	 * we need to account for bundling of the AUTH chunks along with
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 	 * DATA.
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 	 */
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@@ -244,7 +225,7 @@
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 	if (msg_len >= first_len) {
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 		msg->can_delay = 0;
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 		if (msg_len > first_len)
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-			SCTP_INC_STATS(sock_net(asoc->base.sk),
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+			SCTP_INC_STATS(asoc->base.net,
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 				       SCTP_MIB_FRAGUSRMSGS);
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 	} else {
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 		/* Which may be the only one... */