[MPTCP] [MPTCP][PATCH mptcp-next 6/7] mptcp: drop OPTION_MPTCP_ADD_ADDR6

[MPTCP] [MPTCP][PATCH mptcp-next 6/7] mptcp: drop OPTION_MPTCP_ADD_ADDR6

[Geliang Tang]

[-- Attachment #1: Type: text/plain, Size: 2869 bytes --]

Since the family field was added in struct mptcp_out_options, no need to
use OPTION_MPTCP_ADD_ADDR6 to identify the IPv6 address. Drop it.

Signed-off-by: Geliang Tang <geliangtang(a)gmail.com>
---
 net/mptcp/options.c  | 19 +++++--------------
 net/mptcp/protocol.h |  9 ++++-----
 2 files changed, 9 insertions(+), 19 deletions(-)

diff --git a/net/mptcp/options.c b/net/mptcp/options.c
index f3481d94dc26..e3fcd2b0ffd7 100644
--- a/net/mptcp/options.c
+++ b/net/mptcp/options.c
@@ -644,12 +644,7 @@ static bool mptcp_established_options_add_addr(struct sock *sk, struct sk_buff *
 	*size = len;
 	if (drop_other_suboptions)
 		*size -= opt_size;
-	if (opts->addr.family == AF_INET)
-		opts->suboptions |= OPTION_MPTCP_ADD_ADDR;
-#if IS_ENABLED(CONFIG_MPTCP_IPV6)
-	else if (opts->addr.family == AF_INET6)
-		opts->suboptions |= OPTION_MPTCP_ADD_ADDR6;
-#endif
+	opts->suboptions |= OPTION_MPTCP_ADD_ADDR;
 	if (!echo) {
 		opts->ahmac = add_addr_generate_hmac(msk->local_key,
 						     msk->remote_key,
@@ -1156,16 +1151,12 @@ void mptcp_write_options(__be32 *ptr, const struct tcp_sock *tp,
 	}
 
 mp_capable_done:
-	if ((OPTION_MPTCP_ADD_ADDR
-#if IS_ENABLED(CONFIG_MPTCP_IPV6)
-	     | OPTION_MPTCP_ADD_ADDR6
-#endif
-	    ) & opts->suboptions) {
+	if (OPTION_MPTCP_ADD_ADDR & opts->suboptions) {
 		u8 len = TCPOLEN_MPTCP_ADD_ADDR_BASE;
 		u8 echo = MPTCP_ADDR_ECHO;
 
 #if IS_ENABLED(CONFIG_MPTCP_IPV6)
-		if (OPTION_MPTCP_ADD_ADDR6 & opts->suboptions)
+		if (opts->addr.family == AF_INET6)
 			len = TCPOLEN_MPTCP_ADD_ADDR6_BASE;
 #endif
 
@@ -1179,12 +1170,12 @@ void mptcp_write_options(__be32 *ptr, const struct tcp_sock *tp,
 
 		*ptr++ = mptcp_option(MPTCPOPT_ADD_ADDR,
 				      len, echo, opts->addr.id);
-		if (OPTION_MPTCP_ADD_ADDR & opts->suboptions) {
+		if (opts->addr.family == AF_INET) {
 			memcpy((u8 *)ptr, (u8 *)&opts->addr.addr.s_addr, 4);
 			ptr += 1;
 		}
 #if IS_ENABLED(CONFIG_MPTCP_IPV6)
-		else if (OPTION_MPTCP_ADD_ADDR6 & opts->suboptions) {
+		else if (opts->addr.family == AF_INET6) {
 			memcpy((u8 *)ptr, opts->addr.addr6.s6_addr, 16);
 			ptr += 4;
 		}
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index fdfa240fced4..932aee9cd2bd 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -22,11 +22,10 @@
 #define OPTION_MPTCP_MPJ_SYNACK	BIT(4)
 #define OPTION_MPTCP_MPJ_ACK	BIT(5)
 #define OPTION_MPTCP_ADD_ADDR	BIT(6)
-#define OPTION_MPTCP_ADD_ADDR6	BIT(7)
-#define OPTION_MPTCP_RM_ADDR	BIT(8)
-#define OPTION_MPTCP_FASTCLOSE	BIT(9)
-#define OPTION_MPTCP_PRIO	BIT(10)
-#define OPTION_MPTCP_RST	BIT(11)
+#define OPTION_MPTCP_RM_ADDR	BIT(7)
+#define OPTION_MPTCP_FASTCLOSE	BIT(8)
+#define OPTION_MPTCP_PRIO	BIT(9)
+#define OPTION_MPTCP_RST	BIT(10)
 
 /* MPTCP option subtypes */
 #define MPTCPOPT_MP_CAPABLE	0
-- 
2.30.2