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authorXin Long <lucien.xin@gmail.com>2017-10-28 19:43:54 +0800
committerDavid S. Miller <davem@davemloft.net>2017-10-29 18:03:24 +0900
commit1da4fc97cbf89514e417a3df46eaec864a9b8a48 (patch)
tree95dad261a5cad98743fd05b00eda6c722976427c /net/sctp/stream.c
parent50317fce2cc70a2bbbc4b42c31bbad510382a53c (diff)
downloadlinux-1da4fc97cbf89514e417a3df46eaec864a9b8a48.tar.gz
sctp: fix some type cast warnings introduced by stream reconf
These warnings were found by running 'make C=2 M=net/sctp/'.

They are introduced by not aware of Endian when coding stream
reconf patches.

Since commit c0d8bab6ae51 ("sctp: add get and set sockopt for
reconf_enable") enabled stream reconf feature for users, the
Fixes tag below would use it.

Fixes: c0d8bab6ae51 ("sctp: add get and set sockopt for reconf_enable")
Reported-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/stream.c')
-rw-r--r--net/sctp/stream.c26
1 files changed, 17 insertions, 9 deletions
diff --git a/net/sctp/stream.c b/net/sctp/stream.c
index 63ea15503714..fa8371ff05c4 100644
--- a/net/sctp/stream.c
+++ b/net/sctp/stream.c
@@ -118,6 +118,7 @@ int sctp_send_reset_streams(struct sctp_association *asoc,
 	__u16 i, str_nums, *str_list;
 	struct sctp_chunk *chunk;
 	int retval = -EINVAL;
+	__be16 *nstr_list;
 	bool out, in;
 
 	if (!asoc->peer.reconf_capable ||
@@ -148,13 +149,18 @@ int sctp_send_reset_streams(struct sctp_association *asoc,
 			if (str_list[i] >= stream->incnt)
 				goto out;
 
+	nstr_list = kcalloc(str_nums, sizeof(__be16), GFP_KERNEL);
+	if (!nstr_list) {
+		retval = -ENOMEM;
+		goto out;
+	}
+
 	for (i = 0; i < str_nums; i++)
-		str_list[i] = htons(str_list[i]);
+		nstr_list[i] = htons(str_list[i]);
 
-	chunk = sctp_make_strreset_req(asoc, str_nums, str_list, out, in);
+	chunk = sctp_make_strreset_req(asoc, str_nums, nstr_list, out, in);
 
-	for (i = 0; i < str_nums; i++)
-		str_list[i] = ntohs(str_list[i]);
+	kfree(nstr_list);
 
 	if (!chunk) {
 		retval = -ENOMEM;
@@ -305,7 +311,7 @@ out:
 }
 
 static struct sctp_paramhdr *sctp_chunk_lookup_strreset_param(
-			struct sctp_association *asoc, __u32 resp_seq,
+			struct sctp_association *asoc, __be32 resp_seq,
 			__be16 type)
 {
 	struct sctp_chunk *chunk = asoc->strreset_chunk;
@@ -345,8 +351,9 @@ struct sctp_chunk *sctp_process_strreset_outreq(
 {
 	struct sctp_strreset_outreq *outreq = param.v;
 	struct sctp_stream *stream = &asoc->stream;
-	__u16 i, nums, flags = 0, *str_p = NULL;
 	__u32 result = SCTP_STRRESET_DENIED;
+	__u16 i, nums, flags = 0;
+	__be16 *str_p = NULL;
 	__u32 request_seq;
 
 	request_seq = ntohl(outreq->request_seq);
@@ -439,8 +446,9 @@ struct sctp_chunk *sctp_process_strreset_inreq(
 	struct sctp_stream *stream = &asoc->stream;
 	__u32 result = SCTP_STRRESET_DENIED;
 	struct sctp_chunk *chunk = NULL;
-	__u16 i, nums, *str_p;
 	__u32 request_seq;
+	__u16 i, nums;
+	__be16 *str_p;
 
 	request_seq = ntohl(inreq->request_seq);
 	if (TSN_lt(asoc->strreset_inseq, request_seq) ||
@@ -769,7 +777,7 @@ struct sctp_chunk *sctp_process_strreset_resp(
 
 	if (req->type == SCTP_PARAM_RESET_OUT_REQUEST) {
 		struct sctp_strreset_outreq *outreq;
-		__u16 *str_p;
+		__be16 *str_p;
 
 		outreq = (struct sctp_strreset_outreq *)req;
 		str_p = outreq->list_of_streams;
@@ -794,7 +802,7 @@ struct sctp_chunk *sctp_process_strreset_resp(
 			nums, str_p, GFP_ATOMIC);
 	} else if (req->type == SCTP_PARAM_RESET_IN_REQUEST) {
 		struct sctp_strreset_inreq *inreq;
-		__u16 *str_p;
+		__be16 *str_p;
 
 		/* if the result is performed, it's impossible for inreq */
 		if (result == SCTP_STRRESET_PERFORMED)