modify sin led gpio

hc

2024-05-13 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e

 kernel/net/sctp/ulpevent.c
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..
@@ -1,3 +1,4 @@
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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. 2001, 2004
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  * Copyright (c) 1999-2000 Cisco, Inc.
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@@ -8,22 +9,6 @@
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  *
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  * These functions manipulate an sctp event.   The struct ulpevent is used
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  * to carry notifications and data to the ULP (sockets).
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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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..
@@ -253,7 +238,7 @@
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  * When a destination address on a multi-homed peer encounters a change
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  * an interface details event is sent.
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  */
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-struct sctp_ulpevent *sctp_ulpevent_make_peer_addr_change(
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+static struct sctp_ulpevent *sctp_ulpevent_make_peer_addr_change(
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 	const struct sctp_association *asoc,
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 	const struct sockaddr_storage *aaddr,
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 	int flags, int state, int error, gfp_t gfp)
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@@ -349,6 +334,25 @@
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334
 
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 fail:
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 	return NULL;
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+}
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+
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+void sctp_ulpevent_notify_peer_addr_change(struct sctp_transport *transport,
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+					   int state, int error)
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+{
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+	struct sctp_association *asoc = transport->asoc;
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+	struct sockaddr_storage addr;
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+	struct sctp_ulpevent *event;
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+
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+	if (asoc->state < SCTP_STATE_ESTABLISHED)
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+		return;
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+
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+	memset(&addr, 0, sizeof(struct sockaddr_storage));
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+	memcpy(&addr, &transport->ipaddr, transport->af_specific->sockaddr_len);
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+
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+	event = sctp_ulpevent_make_peer_addr_change(asoc, &addr, 0, state,
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+						    error, GFP_ATOMIC);
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+	if (event)
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+		asoc->stream.si->enqueue_event(&asoc->ulpq, event);
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 }
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357
 
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 /* Create and initialize an SCTP_REMOTE_ERROR notification.
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@@ -526,6 +530,45 @@
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 	return NULL;
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531
 }
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532
 
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+struct sctp_ulpevent *sctp_ulpevent_make_send_failed_event(
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+	const struct sctp_association *asoc, struct sctp_chunk *chunk,
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+	__u16 flags, __u32 error, gfp_t gfp)
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+{
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+	struct sctp_send_failed_event *ssf;
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+	struct sctp_ulpevent *event;
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+	struct sk_buff *skb;
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+	int len;
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+
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+	skb = skb_copy_expand(chunk->skb, sizeof(*ssf), 0, gfp);
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+	if (!skb)
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+		return NULL;
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+
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+	len = ntohs(chunk->chunk_hdr->length);
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+	len -= sctp_datachk_len(&asoc->stream);
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+
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+	skb_pull(skb, sctp_datachk_len(&asoc->stream));
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+	event = sctp_skb2event(skb);
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+	sctp_ulpevent_init(event, MSG_NOTIFICATION, skb->truesize);
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+
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+	ssf = skb_push(skb, sizeof(*ssf));
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+	ssf->ssf_type = SCTP_SEND_FAILED_EVENT;
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+	ssf->ssf_flags = flags;
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+	ssf->ssf_length = sizeof(*ssf) + len;
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+	skb_trim(skb, ssf->ssf_length);
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+	ssf->ssf_error = error;
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+
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+	ssf->ssfe_info.snd_sid = chunk->sinfo.sinfo_stream;
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+	ssf->ssfe_info.snd_ppid = chunk->sinfo.sinfo_ppid;
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+	ssf->ssfe_info.snd_context = chunk->sinfo.sinfo_context;
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+	ssf->ssfe_info.snd_assoc_id = chunk->sinfo.sinfo_assoc_id;
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+	ssf->ssfe_info.snd_flags = chunk->chunk_hdr->flags;
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+
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+	sctp_ulpevent_set_owner(event, asoc);
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+	ssf->ssf_assoc_id = sctp_assoc2id(asoc);
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+
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+	return event;
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+}
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+
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 /* Create and initialize a SCTP_SHUTDOWN_EVENT notification.
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  *
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  * Socket Extensions for SCTP - draft-01
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@@ -634,8 +677,9 @@
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 						gfp_t gfp)
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 {
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 	struct sctp_ulpevent *event = NULL;
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-	struct sk_buff *skb;
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-	size_t padding, len;
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+	struct sk_buff *skb = chunk->skb;
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+	struct sock *sk = asoc->base.sk;
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+	size_t padding, datalen;
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683
 	int rx_count;
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 	/*
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@@ -646,15 +690,12 @@
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 	if (asoc->ep->rcvbuf_policy)
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 		rx_count = atomic_read(&asoc->rmem_alloc);
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 	else
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-		rx_count = atomic_read(&asoc->base.sk->sk_rmem_alloc);
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+		rx_count = atomic_read(&sk->sk_rmem_alloc);
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694
 
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-	if (rx_count >= asoc->base.sk->sk_rcvbuf) {
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+	datalen = ntohs(chunk->chunk_hdr->length);
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696
 
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-		if ((asoc->base.sk->sk_userlocks & SOCK_RCVBUF_LOCK) ||
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-		    (!sk_rmem_schedule(asoc->base.sk, chunk->skb,
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-				       chunk->skb->truesize)))
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-			goto fail;
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-	}
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+	if (rx_count >= sk->sk_rcvbuf || !sk_rmem_schedule(sk, skb, datalen))
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+		goto fail;
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 	/* Clone the original skb, sharing the data.  */
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 	skb = skb_clone(chunk->skb, gfp);
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@@ -681,8 +722,7 @@
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 	 * The sender should never pad with more than 3 bytes.  The receiver
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 	 * MUST ignore the padding bytes.
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 	 */
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-	len = ntohs(chunk->chunk_hdr->length);
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-	padding = SCTP_PAD4(len) - len;
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+	padding = SCTP_PAD4(datalen) - datalen;
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 	/* Fixup cloned skb with just this chunks data.  */
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 	skb_trim(skb, chunk->chunk_end - padding - skb->data);