diff options
| author | Geliang Tang <geliangtang@gmail.com> | 2021-06-17 16:46:19 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-06-18 11:40:11 -0700 |
| commit | fc3c82eebf8e2e193412612f509530b4ff5611bf (patch) | |
| tree | 8c088551b4773e59930ab24609c0ace09dc8648e | |
| parent | fe3ab1cbd357d9d0903f2d00038c2cb7141e7fe5 (diff) | |
mptcp: add a new sysctl checksum_enabled
This patch added a new sysctl, named checksum_enabled, to control
whether DSS checksum can be enabled.
Acked-by: Paolo Abeni <pabeni@redhat.com>
Co-developed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | Documentation/networking/mptcp-sysctl.rst | 8 | ||||
| -rw-r--r-- | net/mptcp/ctrl.c | 16 | ||||
| -rw-r--r-- | net/mptcp/protocol.h | 2 |
3 files changed, 25 insertions, 1 deletions
diff --git a/Documentation/networking/mptcp-sysctl.rst b/Documentation/networking/mptcp-sysctl.rst index 3b352e5f6300..ee06fd782465 100644 --- a/Documentation/networking/mptcp-sysctl.rst +++ b/Documentation/networking/mptcp-sysctl.rst @@ -24,3 +24,11 @@ add_addr_timeout - INTEGER (seconds) sysctl. Default: 120 + +checksum_enabled - BOOLEAN + Control whether DSS checksum can be enabled. + + DSS checksum can be enabled if the value is nonzero. This is a + per-namespace sysctl. + + Default: 0 diff --git a/net/mptcp/ctrl.c b/net/mptcp/ctrl.c index 1ec4d36a39f0..6c2639bb9c19 100644 --- a/net/mptcp/ctrl.c +++ b/net/mptcp/ctrl.c @@ -23,6 +23,7 @@ struct mptcp_pernet { u8 mptcp_enabled; unsigned int add_addr_timeout; + u8 checksum_enabled; }; static struct mptcp_pernet *mptcp_get_pernet(struct net *net) @@ -40,10 +41,16 @@ unsigned int mptcp_get_add_addr_timeout(struct net *net) return mptcp_get_pernet(net)->add_addr_timeout; } +int mptcp_is_checksum_enabled(struct net *net) +{ + return mptcp_get_pernet(net)->checksum_enabled; +} + static void mptcp_pernet_set_defaults(struct mptcp_pernet *pernet) { pernet->mptcp_enabled = 1; pernet->add_addr_timeout = TCP_RTO_MAX; + pernet->checksum_enabled = 0; } #ifdef CONFIG_SYSCTL @@ -65,6 +72,14 @@ static struct ctl_table mptcp_sysctl_table[] = { .mode = 0644, .proc_handler = proc_dointvec_jiffies, }, + { + .procname = "checksum_enabled", + .maxlen = sizeof(u8), + .mode = 0644, + .proc_handler = proc_dou8vec_minmax, + .extra1 = SYSCTL_ZERO, + .extra2 = SYSCTL_ONE + }, {} }; @@ -82,6 +97,7 @@ static int mptcp_pernet_new_table(struct net *net, struct mptcp_pernet *pernet) table[0].data = &pernet->mptcp_enabled; table[1].data = &pernet->add_addr_timeout; + table[2].data = &pernet->checksum_enabled; hdr = register_net_sysctl(net, MPTCP_SYSCTL_PATH, table); if (!hdr) diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 12637299b42e..16e50caf200e 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -542,7 +542,7 @@ static inline void mptcp_subflow_delegated_done(struct mptcp_subflow_context *su int mptcp_is_enabled(struct net *net); unsigned int mptcp_get_add_addr_timeout(struct net *net); -static inline int mptcp_is_checksum_enabled(struct net *net) { return false; } +int mptcp_is_checksum_enabled(struct net *net); void mptcp_subflow_fully_established(struct mptcp_subflow_context *subflow, struct mptcp_options_received *mp_opt); bool mptcp_subflow_data_available(struct sock *sk); |