From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/net/sctp/stream.c | 189 +++++++++++------------------------------------
1 files changed, 45 insertions(+), 144 deletions(-)
diff --git a/kernel/net/sctp/stream.c b/kernel/net/sctp/stream.c
index 516bc48..ee6514a 100644
--- a/kernel/net/sctp/stream.c
+++ b/kernel/net/sctp/stream.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/* SCTP kernel implementation
* (C) Copyright IBM Corp. 2001, 2004
* Copyright (c) 1999-2000 Cisco, Inc.
@@ -7,22 +8,6 @@
* This file is part of the SCTP kernel implementation
*
* This file contains sctp stream maniuplation primitives and helpers.
- *
- * This SCTP implementation is free software;
- * you can redistribute it and/or modify it under the terms of
- * the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This SCTP implementation is distributed in the hope that it
- * will be useful, but WITHOUT ANY WARRANTY; without even the implied
- * ************************
- * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- * See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GNU CC; see the file COPYING. If not, see
- * <http://www.gnu.org/licenses/>.
*
* Please send any bug reports or fixes you make to the
* email address(es):
@@ -36,66 +21,6 @@
#include <net/sctp/sctp.h>
#include <net/sctp/sm.h>
#include <net/sctp/stream_sched.h>
-
-static struct flex_array *fa_alloc(size_t elem_size, size_t elem_count,
- gfp_t gfp)
-{
- struct flex_array *result;
- int err;
-
- result = flex_array_alloc(elem_size, elem_count, gfp);
- if (result) {
- err = flex_array_prealloc(result, 0, elem_count, gfp);
- if (err) {
- flex_array_free(result);
- result = NULL;
- }
- }
-
- return result;
-}
-
-static void fa_free(struct flex_array *fa)
-{
- if (fa)
- flex_array_free(fa);
-}
-
-static void fa_copy(struct flex_array *fa, struct flex_array *from,
- size_t index, size_t count)
-{
- void *elem;
-
- while (count--) {
- elem = flex_array_get(from, index);
- flex_array_put(fa, index, elem, 0);
- index++;
- }
-}
-
-static void fa_zero(struct flex_array *fa, size_t index, size_t count)
-{
- void *elem;
-
- while (count--) {
- elem = flex_array_get(fa, index);
- memset(elem, 0, fa->element_size);
- index++;
- }
-}
-
-static size_t fa_index(struct flex_array *fa, void *elem, size_t count)
-{
- size_t index = 0;
-
- while (count--) {
- if (elem == flex_array_get(fa, index))
- break;
- index++;
- }
-
- return index;
-}
static void sctp_stream_shrink_out(struct sctp_stream *stream, __u16 outcnt)
{
@@ -127,6 +52,19 @@
}
}
+static void sctp_stream_free_ext(struct sctp_stream *stream, __u16 sid)
+{
+ struct sctp_sched_ops *sched;
+
+ if (!SCTP_SO(stream, sid)->ext)
+ return;
+
+ sched = sctp_sched_ops_from_stream(stream);
+ sched->free_sid(stream, sid);
+ kfree(SCTP_SO(stream, sid)->ext);
+ SCTP_SO(stream, sid)->ext = NULL;
+}
+
/* Migrates chunks from stream queues to new stream queues if needed,
* but not across associations. Also, removes those chunks to streams
* higher than the new max.
@@ -145,68 +83,47 @@
* sctp_stream_update will swap ->out pointers.
*/
for (i = 0; i < outcnt; i++) {
- kfree(SCTP_SO(new, i)->ext);
+ sctp_stream_free_ext(new, i);
SCTP_SO(new, i)->ext = SCTP_SO(stream, i)->ext;
SCTP_SO(stream, i)->ext = NULL;
}
}
- for (i = outcnt; i < stream->outcnt; i++) {
- kfree(SCTP_SO(stream, i)->ext);
- SCTP_SO(stream, i)->ext = NULL;
- }
+ for (i = outcnt; i < stream->outcnt; i++)
+ sctp_stream_free_ext(stream, i);
}
static int sctp_stream_alloc_out(struct sctp_stream *stream, __u16 outcnt,
gfp_t gfp)
{
- struct flex_array *out;
- size_t elem_size = sizeof(struct sctp_stream_out);
+ int ret;
- out = fa_alloc(elem_size, outcnt, gfp);
- if (!out)
- return -ENOMEM;
+ if (outcnt <= stream->outcnt)
+ goto out;
- if (stream->out) {
- fa_copy(out, stream->out, 0, min(outcnt, stream->outcnt));
- if (stream->out_curr) {
- size_t index = fa_index(stream->out, stream->out_curr,
- stream->outcnt);
+ ret = genradix_prealloc(&stream->out, outcnt, gfp);
+ if (ret)
+ return ret;
- BUG_ON(index == stream->outcnt);
- stream->out_curr = flex_array_get(out, index);
- }
- fa_free(stream->out);
- }
-
- if (outcnt > stream->outcnt)
- fa_zero(out, stream->outcnt, (outcnt - stream->outcnt));
-
- stream->out = out;
-
+out:
+ stream->outcnt = outcnt;
return 0;
}
static int sctp_stream_alloc_in(struct sctp_stream *stream, __u16 incnt,
gfp_t gfp)
{
- struct flex_array *in;
- size_t elem_size = sizeof(struct sctp_stream_in);
+ int ret;
- in = fa_alloc(elem_size, incnt, gfp);
- if (!in)
- return -ENOMEM;
+ if (incnt <= stream->incnt)
+ goto out;
- if (stream->in) {
- fa_copy(in, stream->in, 0, min(incnt, stream->incnt));
- fa_free(stream->in);
- }
+ ret = genradix_prealloc(&stream->in, incnt, gfp);
+ if (ret)
+ return ret;
- if (incnt > stream->incnt)
- fa_zero(in, stream->incnt, (incnt - stream->incnt));
-
- stream->in = in;
-
+out:
+ stream->incnt = incnt;
return 0;
}
@@ -222,7 +139,7 @@
* a new one with new outcnt to save memory if needed.
*/
if (outcnt == stream->outcnt)
- goto in;
+ goto handle_in;
/* Filter out chunks queued on streams that won't exist anymore */
sched->unsched_all(stream);
@@ -231,30 +148,17 @@
ret = sctp_stream_alloc_out(stream, outcnt, gfp);
if (ret)
- goto out;
+ return ret;
- stream->outcnt = outcnt;
for (i = 0; i < stream->outcnt; i++)
SCTP_SO(stream, i)->state = SCTP_STREAM_OPEN;
-in:
+handle_in:
sctp_stream_interleave_init(stream);
if (!incnt)
- goto out;
+ return 0;
- ret = sctp_stream_alloc_in(stream, incnt, gfp);
- if (ret) {
- sched->free(stream);
- fa_free(stream->out);
- stream->out = NULL;
- stream->outcnt = 0;
- goto out;
- }
-
- stream->incnt = incnt;
-
-out:
- return ret;
+ return sctp_stream_alloc_in(stream, incnt, gfp);
}
int sctp_stream_init_ext(struct sctp_stream *stream, __u16 sid)
@@ -281,11 +185,11 @@
struct sctp_sched_ops *sched = sctp_sched_ops_from_stream(stream);
int i;
- sched->free(stream);
+ sched->unsched_all(stream);
for (i = 0; i < stream->outcnt; i++)
- kfree(SCTP_SO(stream, i)->ext);
- fa_free(stream->out);
- fa_free(stream->in);
+ sctp_stream_free_ext(stream, i);
+ genradix_free(&stream->out);
+ genradix_free(&stream->in);
}
void sctp_stream_clear(struct sctp_stream *stream)
@@ -316,8 +220,8 @@
sched->sched_all(stream);
- new->out = NULL;
- new->in = NULL;
+ new->out.tree.root = NULL;
+ new->in.tree.root = NULL;
new->outcnt = 0;
new->incnt = 0;
}
@@ -325,10 +229,9 @@
static int sctp_send_reconf(struct sctp_association *asoc,
struct sctp_chunk *chunk)
{
- struct net *net = sock_net(asoc->base.sk);
int retval = 0;
- retval = sctp_primitive_RECONF(net, asoc, chunk);
+ retval = sctp_primitive_RECONF(asoc->base.net, asoc, chunk);
if (retval)
sctp_chunk_free(chunk);
@@ -569,8 +472,6 @@
asoc->strreset_chunk = NULL;
goto out;
}
-
- stream->outcnt = outcnt;
asoc->strreset_outstanding = !!out + !!in;
--
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