修改4g拨号为QMI,需要在系统里后台执行quectel-CM

hc

2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/net/dccp/output.c
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@@ -1,13 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  *  net/dccp/output.c
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  *
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  *  An implementation of the DCCP protocol
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  *  Arnaldo Carvalho de Melo <acme@conectiva.com.br>
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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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@@ -66,7 +62,7 @@
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 		switch (dcb->dccpd_type) {
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 		case DCCP_PKT_DATA:
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 			set_ack = 0;
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-			/* fall through */
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+			fallthrough;
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 		case DCCP_PKT_DATAACK:
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 		case DCCP_PKT_RESET:
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 			break;
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@@ -76,12 +72,12 @@
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 			/* Use ISS on the first (non-retransmitted) Request. */
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 			if (icsk->icsk_retransmits == 0)
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 				dcb->dccpd_seq = dp->dccps_iss;
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-			/* fall through */
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+			fallthrough;
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 		case DCCP_PKT_SYNC:
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 		case DCCP_PKT_SYNCACK:
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 			ackno = dcb->dccpd_ack_seq;
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-			/* fall through */
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+			fallthrough;
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 		default:
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 			/*
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 			 * Set owner/destructor: some skbs are allocated via
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@@ -189,7 +185,7 @@
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 	/* And store cached results */
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 	icsk->icsk_pmtu_cookie = pmtu;
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-	dp->dccps_mss_cache = cur_mps;
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+	WRITE_ONCE(dp->dccps_mss_cache, cur_mps);
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 	return cur_mps;
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 }
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@@ -485,7 +481,7 @@
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 	case DCCP_RESET_CODE_PACKET_ERROR:
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 		dhr->dccph_reset_data[0] = rxdh->dccph_type;
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 		break;
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-	case DCCP_RESET_CODE_OPTION_ERROR:	/* fall through */
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+	case DCCP_RESET_CODE_OPTION_ERROR:
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 	case DCCP_RESET_CODE_MANDATORY_ERROR:
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 		memcpy(dhr->dccph_reset_data, dcb->dccpd_reset_data, 3);
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 		break;