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mptcp: add the outgoing RM_ADDR support

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This patch added a new signal named rm_addr_signal in PM. On outgoing path,
we called mptcp_pm_should_rm_signal to check if rm_addr_signal has been
set. If it has been, we sent out the RM_ADDR option.

Suggested-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Suggested-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Geliang Tang
2020-09-24 08:29:48 +08:00
committed by David S. Miller
parent f643b8032e
commit 5cb104ae55
3 changed files with 63 additions and 0 deletions
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9
net/mptcp/protocol.h
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@@ -163,6 +163,7 @@ struct mptcp_pm_data {
spinlock_t lock; /*protects the whole PM data */
bool add_addr_signal;
bool rm_addr_signal;
bool server_side;
bool work_pending;
bool accept_addr;
@@ -176,6 +177,7 @@ struct mptcp_pm_data {
u8 local_addr_max;
u8 subflows_max;
u8 status;
u8 rm_id;
};
struct mptcp_data_frag {
@@ -443,6 +445,11 @@ static inline bool mptcp_pm_should_add_signal(struct mptcp_sock *msk)
return READ_ONCE(msk->pm.add_addr_signal);
}
static inline bool mptcp_pm_should_rm_signal(struct mptcp_sock *msk)
{
return READ_ONCE(msk->pm.rm_addr_signal);
}
static inline unsigned int mptcp_add_addr_len(int family)
{
if (family == AF_INET)
@@ -452,6 +459,8 @@ static inline unsigned int mptcp_add_addr_len(int family)
bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, unsigned int remaining,
struct mptcp_addr_info *saddr);
bool mptcp_pm_rm_addr_signal(struct mptcp_sock *msk, unsigned int remaining,
u8 *rm_id);
int mptcp_pm_get_local_id(struct mptcp_sock *msk, struct sock_common *skc);
void __init mptcp_pm_nl_init(void);