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[RFC,net-next,13/20] net/smc: embedded tcp sock into smc sock

Message ID 1708412505-34470-14-git-send-email-alibuda@linux.alibaba.com (mailing list archive)
State Superseded
Headers show
Series Introduce IPPROTO_SMC | expand

Commit Message

D. Wythe Feb. 20, 2024, 7:01 a.m. UTC 
From: "D. Wythe" <alibuda@linux.alibaba.com>

For inet version of SMC, one of the key goals is to make
a fallbacked smc sock can be recognazied as a tcp sock by
net tools.

So, it is necessary to embedded the tcp sock into smc sock
and make the tcp sock as the first member of smc sock.

Signed-off-by: D. Wythe <alibuda@linux.alibaba.com>
---
 net/smc/smc.h | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)
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Patch

diff --git a/net/smc/smc.h b/net/smc/smc.h
index fce6a7a..932d61f 100644
--- a/net/smc/smc.h
+++ b/net/smc/smc.h
@@ -248,7 +248,11 @@  struct smc_connection {
 };
 
 struct smc_sock {				/* smc sock container */
-	struct sock		sk;
+	union {
+		struct tcp6_sock tp6sk;
+		struct tcp_sock tpsk;
+		struct sock sk;
+	};
 	struct socket		*clcsock;	/* internal tcp socket */
 	void			(*clcsk_state_change)(struct sock *sk);
 						/* original stat_change fct. */
@@ -388,6 +392,11 @@  static inline void smc_sock_set_flag(struct sock *sk, enum sock_flags flag)
 	set_bit(flag, &sk->sk_flags);
 }
 
+static __always_inline bool smc_sock_is_inet_sock(const struct sock *sk)
+{
+	return inet_test_bit(IS_ICSK, sk);
+}
+
 #define smc_sock_flag(sk, flag)	sock_flag(sk, flag)
 
 #endif	/* __SMC_H */