From f462a446384d0c00c6e457f7e8eb2053b095a2f1 Mon Sep 17 00:00:00 2001 From: Yonglong Li Date: Mon, 23 Aug 2021 18:05:42 -0700 Subject: [PATCH] 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 Signed-off-by: Geliang Tang Co-developed-by: Paolo Abeni Signed-off-by: Paolo Abeni Signed-off-by: Yonglong Li Signed-off-by: Mat Martineau Signed-off-by: David S. Miller --- net/mptcp/pm.c | 14 +++++++++----- net/mptcp/protocol.h | 2 +- 2 files changed, 10 insertions(+), 6 deletions(-) diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c index bc03c08..f1b520d 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 3c388c1..27afacb 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); -- 2.7.4