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authorYonglong Li <liyonglong@chinatelecom.cn>2021-08-24 04:05:42 +0300
committerDavid S. Miller <davem@davemloft.net>2021-08-24 11:28:28 +0300
commitf462a446384d0c00c6e457f7e8eb2053b095a2f1 (patch)
tree2b5768c170ea5eb9b8333ab85c9ea2639f58a9d3 /net/mptcp
parent119c022096f5805680c79dfa74e15044c289856d (diff)
downloadlinux-f462a446384d0c00c6e457f7e8eb2053b095a2f1.tar.xz
mptcp: build ADD_ADDR/echo-ADD_ADDR option according pm.add_signal
According to the MPTCP_ADD_ADDR_SIGNAL or MPTCP_ADD_ADDR_ECHO flag, build the ADD_ADDR/ADD_ADDR_ECHO option. In mptcp_pm_add_addr_signal(), use opts->addr to save the announced ADD_ADDR or ADD_ADDR_ECHO address. Co-developed-by: Geliang Tang <geliangtang@gmail.com> Signed-off-by: Geliang Tang <geliangtang@gmail.com> Co-developed-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Yonglong Li <liyonglong@chinatelecom.cn> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/mptcp')
-rw-r--r--net/mptcp/pm.c14
-rw-r--r--net/mptcp/protocol.h2
2 files changed, 10 insertions, 6 deletions
diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c
index bc03c08eeee5..f1b520df228a 100644
--- a/net/mptcp/pm.c
+++ b/net/mptcp/pm.c
@@ -257,11 +257,12 @@ void mptcp_pm_mp_prio_received(struct sock *sk, u8 bkup)
bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, struct sk_buff *skb,
unsigned int opt_size, unsigned int remaining,
- struct mptcp_addr_info *saddr, bool *echo,
+ struct mptcp_addr_info *addr, bool *echo,
bool *port, bool *drop_other_suboptions)
{
int ret = false;
u8 add_addr;
+ u8 family;
spin_lock_bh(&msk->pm.lock);
@@ -281,14 +282,17 @@ bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, struct sk_buff *skb,
*echo = mptcp_pm_should_add_signal_echo(msk);
*port = mptcp_pm_should_add_signal_port(msk);
- if (remaining < mptcp_add_addr_len(msk->pm.local.family, *echo, *port))
+ family = *echo ? msk->pm.remote.family : msk->pm.local.family;
+ if (remaining < mptcp_add_addr_len(family, *echo, *port))
goto out_unlock;
- *saddr = msk->pm.local;
- if (*echo)
+ if (*echo) {
+ *addr = msk->pm.remote;
add_addr = msk->pm.addr_signal & ~BIT(MPTCP_ADD_ADDR_ECHO);
- else
+ } else {
+ *addr = msk->pm.local;
add_addr = msk->pm.addr_signal & ~BIT(MPTCP_ADD_ADDR_SIGNAL);
+ }
WRITE_ONCE(msk->pm.addr_signal, add_addr);
ret = true;
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index 3c388c1a9de4..27afacb6fde2 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -802,7 +802,7 @@ static inline int mptcp_rm_addr_len(const struct mptcp_rm_list *rm_list)
bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, struct sk_buff *skb,
unsigned int opt_size, unsigned int remaining,
- struct mptcp_addr_info *saddr, bool *echo,
+ struct mptcp_addr_info *addr, bool *echo,
bool *port, bool *drop_other_suboptions);
bool mptcp_pm_rm_addr_signal(struct mptcp_sock *msk, unsigned int remaining,
struct mptcp_rm_list *rm_list);