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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/net/dccp/options.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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 /*
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  *  net/dccp/options.c
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  *
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@@ -5,11 +6,6 @@
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  *  Copyright (c) 2005 Aristeu Sergio Rozanski Filho <aris@cathedrallabs.org>
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  *  Copyright (c) 2005 Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
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  *  Copyright (c) 2005 Ian McDonald <ian.mcdonald@jandi.co.nz>
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- *
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- *      This program is free software; you can redistribute it and/or
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- *      modify it under the terms of the GNU General Public License
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- *      as published by the Free Software Foundation; either version
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- *      2 of the License, or (at your option) any later version.
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  */
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 #include <linux/dccp.h>
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 #include <linux/module.h>
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@@ -47,6 +43,7 @@
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  * dccp_parse_options  -  Parse DCCP options present in @skb
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  * @sk: client|server|listening dccp socket (when @dreq != NULL)
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  * @dreq: request socket to use during connection setup, or NULL
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+ * @skb: frame to parse
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  */
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 int dccp_parse_options(struct sock *sk, struct dccp_request_sock *dreq,
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 		       struct sk_buff *skb)
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@@ -60,7 +57,7 @@
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 					(dh->dccph_doff * 4);
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 	struct dccp_options_received *opt_recv = &dp->dccps_options_received;
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 	unsigned char opt, len;
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-	unsigned char *uninitialized_var(value);
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+	unsigned char *value;
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 	u32 elapsed_time;
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 	__be32 opt_val;
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 	int rc;
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@@ -228,7 +225,7 @@
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 			 * interested. The RX CCID need not parse Ack Vectors,
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 			 * since it is only interested in clearing old state.
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 			 */
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-			/* fall through */
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+			fallthrough;
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 		case DCCPO_MIN_TX_CCID_SPECIFIC ... DCCPO_MAX_TX_CCID_SPECIFIC:
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 			if (ccid_hc_tx_parse_options(dp->dccps_hc_tx_ccid, sk,
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 						     pkt_type, opt, value, len))
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@@ -475,6 +472,8 @@
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 /**
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  * dccp_insert_option_mandatory  -  Mandatory option (5.8.2)
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+ * @skb: frame into which to insert option
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+ *
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  * Note that since we are using skb_push, this function needs to be called
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  * _after_ inserting the option it is supposed to influence (stack order).
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  */
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@@ -490,6 +489,7 @@
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 /**
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  * dccp_insert_fn_opt  -  Insert single Feature-Negotiation option into @skb
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+ * @skb: frame to insert feature negotiation option into
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  * @type: %DCCPO_CHANGE_L, %DCCPO_CHANGE_R, %DCCPO_CONFIRM_L, %DCCPO_CONFIRM_R
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  * @feat: one out of %dccp_feature_numbers
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  * @val: NN value or SP array (preferred element first) to copy