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From: Mat Martineau <mathew.j.martineau at linux.intel.com>
To: mptcp at lists.01.org
Subject: [MPTCP] [PATCH net-next 01/11] mptcp: unify ADD_ADDR and echo suboptions writing
Date: Wed, 09 Dec 2020 15:51:18 -0800	[thread overview]
Message-ID: <20201209235128.175473-2-mathew.j.martineau@linux.intel.com> (raw)
In-Reply-To: 20201209235128.175473-1-mathew.j.martineau@linux.intel.com

[-- Attachment #1: Type: text/plain, Size: 2374 bytes --]

From: Geliang Tang <geliangtang(a)gmail.com>

There are two differences between ADD_ADDR suboption and ADD_ADDR echo
suboption: The length of the former is 8 octets longer than the length
of the latter. The former's echo-flag is 0, and latter's echo-flag is 1.

This patch added two local variables, len and echo, to unify ADD_ADDR
and ADD_ADDR echo suboptions writing.

Signed-off-by: Geliang Tang <geliangtang(a)gmail.com>
Signed-off-by: Mat Martineau <mathew.j.martineau(a)linux.intel.com>
---
 net/mptcp/options.c | 37 +++++++++++++++++++------------------
 1 file changed, 19 insertions(+), 18 deletions(-)

diff --git a/net/mptcp/options.c b/net/mptcp/options.c
index b63f26bf348f..a061b2106cfe 100644
--- a/net/mptcp/options.c
+++ b/net/mptcp/options.c
@@ -1076,15 +1076,16 @@ void mptcp_write_options(__be32 *ptr, const struct tcp_sock *tp,
 
 mp_capable_done:
 	if (OPTION_MPTCP_ADD_ADDR & opts->suboptions) {
-		if (opts->ahmac)
-			*ptr++ = mptcp_option(MPTCPOPT_ADD_ADDR,
-					      TCPOLEN_MPTCP_ADD_ADDR, 0,
-					      opts->addr_id);
-		else
-			*ptr++ = mptcp_option(MPTCPOPT_ADD_ADDR,
-					      TCPOLEN_MPTCP_ADD_ADDR_BASE,
-					      MPTCP_ADDR_ECHO,
-					      opts->addr_id);
+		u8 len = TCPOLEN_MPTCP_ADD_ADDR_BASE;
+		u8 echo = MPTCP_ADDR_ECHO;
+
+		if (opts->ahmac) {
+			len += sizeof(opts->ahmac);
+			echo = 0;
+		}
+
+		*ptr++ = mptcp_option(MPTCPOPT_ADD_ADDR,
+				      len, echo, opts->addr_id);
 		memcpy((u8 *)ptr, (u8 *)&opts->addr.s_addr, 4);
 		ptr += 1;
 		if (opts->ahmac) {
@@ -1095,15 +1096,15 @@ void mptcp_write_options(__be32 *ptr, const struct tcp_sock *tp,
 
 #if IS_ENABLED(CONFIG_MPTCP_IPV6)
 	if (OPTION_MPTCP_ADD_ADDR6 & opts->suboptions) {
-		if (opts->ahmac)
-			*ptr++ = mptcp_option(MPTCPOPT_ADD_ADDR,
-					      TCPOLEN_MPTCP_ADD_ADDR6, 0,
-					      opts->addr_id);
-		else
-			*ptr++ = mptcp_option(MPTCPOPT_ADD_ADDR,
-					      TCPOLEN_MPTCP_ADD_ADDR6_BASE,
-					      MPTCP_ADDR_ECHO,
-					      opts->addr_id);
+		u8 len = TCPOLEN_MPTCP_ADD_ADDR6_BASE;
+		u8 echo = MPTCP_ADDR_ECHO;
+
+		if (opts->ahmac) {
+			len += sizeof(opts->ahmac);
+			echo = 0;
+		}
+		*ptr++ = mptcp_option(MPTCPOPT_ADD_ADDR,
+				      len, echo, opts->addr_id);
 		memcpy((u8 *)ptr, opts->addr6.s6_addr, 16);
 		ptr += 4;
 		if (opts->ahmac) {
-- 
2.29.2

WARNING: multiple messages have this Message-ID (diff)
From: Mat Martineau <mathew.j.martineau@linux.intel.com>
To: netdev@vger.kernel.org
Cc: Geliang Tang <geliangtang@gmail.com>,
	davem@davemloft.net, kuba@kernel.org, mptcp@lists.01.org,
	Mat Martineau <mathew.j.martineau@linux.intel.com>
Subject: [PATCH net-next 01/11] mptcp: unify ADD_ADDR and echo suboptions writing
Date: Wed,  9 Dec 2020 15:51:18 -0800	[thread overview]
Message-ID: <20201209235128.175473-2-mathew.j.martineau@linux.intel.com> (raw)
In-Reply-To: <20201209235128.175473-1-mathew.j.martineau@linux.intel.com>

From: Geliang Tang <geliangtang@gmail.com>

There are two differences between ADD_ADDR suboption and ADD_ADDR echo
suboption: The length of the former is 8 octets longer than the length
of the latter. The former's echo-flag is 0, and latter's echo-flag is 1.

This patch added two local variables, len and echo, to unify ADD_ADDR
and ADD_ADDR echo suboptions writing.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
---
 net/mptcp/options.c | 37 +++++++++++++++++++------------------
 1 file changed, 19 insertions(+), 18 deletions(-)

diff --git a/net/mptcp/options.c b/net/mptcp/options.c
index b63f26bf348f..a061b2106cfe 100644
--- a/net/mptcp/options.c
+++ b/net/mptcp/options.c
@@ -1076,15 +1076,16 @@ void mptcp_write_options(__be32 *ptr, const struct tcp_sock *tp,
 
 mp_capable_done:
 	if (OPTION_MPTCP_ADD_ADDR & opts->suboptions) {
-		if (opts->ahmac)
-			*ptr++ = mptcp_option(MPTCPOPT_ADD_ADDR,
-					      TCPOLEN_MPTCP_ADD_ADDR, 0,
-					      opts->addr_id);
-		else
-			*ptr++ = mptcp_option(MPTCPOPT_ADD_ADDR,
-					      TCPOLEN_MPTCP_ADD_ADDR_BASE,
-					      MPTCP_ADDR_ECHO,
-					      opts->addr_id);
+		u8 len = TCPOLEN_MPTCP_ADD_ADDR_BASE;
+		u8 echo = MPTCP_ADDR_ECHO;
+
+		if (opts->ahmac) {
+			len += sizeof(opts->ahmac);
+			echo = 0;
+		}
+
+		*ptr++ = mptcp_option(MPTCPOPT_ADD_ADDR,
+				      len, echo, opts->addr_id);
 		memcpy((u8 *)ptr, (u8 *)&opts->addr.s_addr, 4);
 		ptr += 1;
 		if (opts->ahmac) {
@@ -1095,15 +1096,15 @@ void mptcp_write_options(__be32 *ptr, const struct tcp_sock *tp,
 
 #if IS_ENABLED(CONFIG_MPTCP_IPV6)
 	if (OPTION_MPTCP_ADD_ADDR6 & opts->suboptions) {
-		if (opts->ahmac)
-			*ptr++ = mptcp_option(MPTCPOPT_ADD_ADDR,
-					      TCPOLEN_MPTCP_ADD_ADDR6, 0,
-					      opts->addr_id);
-		else
-			*ptr++ = mptcp_option(MPTCPOPT_ADD_ADDR,
-					      TCPOLEN_MPTCP_ADD_ADDR6_BASE,
-					      MPTCP_ADDR_ECHO,
-					      opts->addr_id);
+		u8 len = TCPOLEN_MPTCP_ADD_ADDR6_BASE;
+		u8 echo = MPTCP_ADDR_ECHO;
+
+		if (opts->ahmac) {
+			len += sizeof(opts->ahmac);
+			echo = 0;
+		}
+		*ptr++ = mptcp_option(MPTCPOPT_ADD_ADDR,
+				      len, echo, opts->addr_id);
 		memcpy((u8 *)ptr, opts->addr6.s6_addr, 16);
 		ptr += 4;
 		if (opts->ahmac) {
-- 
2.29.2


             reply	other threads:[~2020-12-09 23:51 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-09 23:51 Mat Martineau [this message]
2020-12-09 23:51 ` [PATCH net-next 01/11] mptcp: unify ADD_ADDR and echo suboptions writing Mat Martineau
  -- strict thread matches above, loose matches on Subject: below --
2020-12-10  3:04 [MPTCP] Re: [PATCH net-next 00/11] mptcp: Add port parameter to ADD_ADDR option David Miller
2020-12-10  3:04 ` David Miller
2020-12-09 23:51 [MPTCP] [PATCH net-next 11/11] mptcp: use the variable sk instead of open-coding Mat Martineau
2020-12-09 23:51 ` Mat Martineau
2020-12-09 23:51 [MPTCP] [PATCH net-next 10/11] mptcp: rename add_addr_signal and mptcp_add_addr_status Mat Martineau
2020-12-09 23:51 ` Mat Martineau
2020-12-09 23:51 [MPTCP] [PATCH net-next 09/11] mptcp: drop rm_addr_signal flag Mat Martineau
2020-12-09 23:51 ` Mat Martineau
2020-12-09 23:51 [MPTCP] [PATCH net-next 08/11] mptcp: print out port and ahmac when receiving ADD_ADDR Mat Martineau
2020-12-09 23:51 ` Mat Martineau
2020-12-09 23:51 [MPTCP] [PATCH net-next 07/11] mptcp: add port parameter for mptcp_pm_announce_addr Mat Martineau
2020-12-09 23:51 ` Mat Martineau
2020-12-09 23:51 [MPTCP] [PATCH net-next 06/11] mptcp: send out dedicated packet for ADD_ADDR using port Mat Martineau
2020-12-09 23:51 ` Mat Martineau
2020-12-09 23:51 [MPTCP] [PATCH net-next 05/11] mptcp: add the outgoing ADD_ADDR port support Mat Martineau
2020-12-09 23:51 ` Mat Martineau
2020-12-09 23:51 [MPTCP] [PATCH net-next 04/11] mptcp: use adding up size to get ADD_ADDR length Mat Martineau
2020-12-09 23:51 ` Mat Martineau
2020-12-09 23:51 [MPTCP] [PATCH net-next 03/11] mptcp: add port support for ADD_ADDR suboption writing Mat Martineau
2020-12-09 23:51 ` Mat Martineau
2020-12-09 23:51 [MPTCP] [PATCH net-next 02/11] mptcp: unify ADD_ADDR and ADD_ADDR6 suboptions writing Mat Martineau
2020-12-09 23:51 ` Mat Martineau
2020-12-09 23:51 [MPTCP] [PATCH net-next 00/11] mptcp: Add port parameter to ADD_ADDR option Mat Martineau
2020-12-09 23:51 ` Mat Martineau

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