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| author | Florian Westphal <fw@strlen.de> | 2022-02-16 03:11:29 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-02-17 05:52:05 +0100 |
| commit | 51fa7f8ebf0e25c7a9039fa3988a623d5f3855aa (patch) | |
| tree | 9a7fbc8ca3955471e3a4140edb7a82ac8ce4f05d | |
| parent | mptcp: constify a bunch of of helpers (diff) | |
| download | linux-51fa7f8ebf0e25c7a9039fa3988a623d5f3855aa.tar.xz linux-51fa7f8ebf0e25c7a9039fa3988a623d5f3855aa.zip | |
mptcp: mark ops structures as ro_after_init
These structures are initialised from the init hooks, so we can't make
them 'const'. But no writes occur afterwards, so we can use ro_after_init.
Also, remove bogus EXPORT_SYMBOL, the only access comes from ip
stack, not from kernel modules.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | net/mptcp/subflow.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c index 8cf85684c88f..740cb4763461 100644 --- a/net/mptcp/subflow.c +++ b/net/mptcp/subflow.c @@ -482,8 +482,7 @@ do_reset: } struct request_sock_ops mptcp_subflow_request_sock_ops; -EXPORT_SYMBOL_GPL(mptcp_subflow_request_sock_ops); -static struct tcp_request_sock_ops subflow_request_sock_ipv4_ops; +static struct tcp_request_sock_ops subflow_request_sock_ipv4_ops __ro_after_init; static int subflow_v4_conn_request(struct sock *sk, struct sk_buff *skb) { @@ -504,9 +503,9 @@ drop: } #if IS_ENABLED(CONFIG_MPTCP_IPV6) -static struct tcp_request_sock_ops subflow_request_sock_ipv6_ops; -static struct inet_connection_sock_af_ops subflow_v6_specific; -static struct inet_connection_sock_af_ops subflow_v6m_specific; +static struct tcp_request_sock_ops subflow_request_sock_ipv6_ops __ro_after_init; +static struct inet_connection_sock_af_ops subflow_v6_specific __ro_after_init; +static struct inet_connection_sock_af_ops subflow_v6m_specific __ro_after_init; static struct proto tcpv6_prot_override; static int subflow_v6_conn_request(struct sock *sk, struct sk_buff *skb) @@ -788,7 +787,7 @@ dispose_child: return child; } -static struct inet_connection_sock_af_ops subflow_specific; +static struct inet_connection_sock_af_ops subflow_specific __ro_after_init; static struct proto tcp_prot_override; enum mapping_status { @@ -1309,7 +1308,7 @@ static void subflow_write_space(struct sock *ssk) mptcp_write_space(sk); } -static struct inet_connection_sock_af_ops * +static const struct inet_connection_sock_af_ops * subflow_default_af_ops(struct sock *sk) { #if IS_ENABLED(CONFIG_MPTCP_IPV6) @@ -1324,7 +1323,7 @@ void mptcpv6_handle_mapped(struct sock *sk, bool mapped) { struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk); struct inet_connection_sock *icsk = inet_csk(sk); - struct inet_connection_sock_af_ops *target; + const struct inet_connection_sock_af_ops *target; target = mapped ? &subflow_v6m_specific : subflow_default_af_ops(sk); |