netdev - [PATCH net-next v3 02/11] sock: Make sk

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Date:   Tue, 17 Dec 2019 12:37:58 -0800
From:   Mat Martineau <mathew.j.martineau@...ux.intel.com>
To:     netdev@...r.kernel.org, mptcp@...ts.01.org
Cc:     Mat Martineau <mathew.j.martineau@...ux.intel.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Matthieu Baerts <matthieu.baerts@...sares.net>
Subject: [PATCH net-next v3 02/11] sock: Make sk_protocol a 16-bit value

Match the 16-bit width of skbuff->protocol. Fills an 8-bit hole so
sizeof(struct sock) does not change.

v2 -> v3:
 - keep 'sk_type' 2 bytes aligned (Eric)
v1 -> v2:
 - preserve sk_pacing_shift as bit field (Eric)

Co-developed-by: Paolo Abeni <pabeni@...hat.com>
Signed-off-by: Paolo Abeni <pabeni@...hat.com>
Co-developed-by: Matthieu Baerts <matthieu.baerts@...sares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@...sares.net>
Signed-off-by: Mat Martineau <mathew.j.martineau@...ux.intel.com>
---
 include/net/sock.h          | 10 +++++-----
 include/trace/events/sock.h |  2 +-
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/include/net/sock.h b/include/net/sock.h
index 81dc811aad2e..b93cadba1a3b 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -451,15 +451,15 @@ struct sock {
 #define SK_FL_TYPE_MASK    0xffff0000
 #endif
 
-	unsigned int		sk_padding : 1,
+	u8			sk_padding : 1,
 				sk_kern_sock : 1,
 				sk_no_check_tx : 1,
 				sk_no_check_rx : 1,
-				sk_userlocks : 4,
-				sk_protocol  : 8,
-				sk_type      : 16;
-	u16			sk_gso_max_segs;
+				sk_userlocks : 4;
 	u8			sk_pacing_shift;
+	u16			sk_type;
+	u16			sk_protocol;
+	u16			sk_gso_max_segs;
 	unsigned long	        sk_lingertime;
 	struct proto		*sk_prot_creator;
 	rwlock_t		sk_callback_lock;
diff --git a/include/trace/events/sock.h b/include/trace/events/sock.h
index 51fe9f6719eb..3ff12b90048d 100644
--- a/include/trace/events/sock.h
+++ b/include/trace/events/sock.h
@@ -147,7 +147,7 @@ TRACE_EVENT(inet_sock_set_state,
 		__field(__u16, sport)
 		__field(__u16, dport)
 		__field(__u16, family)
-		__field(__u8, protocol)
+		__field(__u16, protocol)
 		__array(__u8, saddr, 4)
 		__array(__u8, daddr, 4)
 		__array(__u8, saddr_v6, 16)
-- 
2.24.1