diff options
Diffstat (limited to 'net/mptcp/options.c')
| -rw-r--r-- | net/mptcp/options.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/net/mptcp/options.c b/net/mptcp/options.c index ee0cb0546324..bbc124876417 100644 --- a/net/mptcp/options.c +++ b/net/mptcp/options.c @@ -614,6 +614,31 @@ static bool mptcp_established_options_add_addr(struct sock *sk, return true; } +static bool mptcp_established_options_rm_addr(struct sock *sk, + unsigned int *size, + unsigned int remaining, + struct mptcp_out_options *opts) +{ + struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk); + struct mptcp_sock *msk = mptcp_sk(subflow->conn); + u8 rm_id; + + if (!mptcp_pm_should_rm_signal(msk) || + !(mptcp_pm_rm_addr_signal(msk, remaining, &rm_id))) + return false; + + if (remaining < TCPOLEN_MPTCP_RM_ADDR_BASE) + return false; + + *size = TCPOLEN_MPTCP_RM_ADDR_BASE; + opts->suboptions |= OPTION_MPTCP_RM_ADDR; + opts->rm_id = rm_id; + + pr_debug("rm_id=%d", opts->rm_id); + + return true; +} + bool mptcp_established_options(struct sock *sk, struct sk_buff *skb, unsigned int *size, unsigned int remaining, struct mptcp_out_options *opts) @@ -644,6 +669,10 @@ bool mptcp_established_options(struct sock *sk, struct sk_buff *skb, *size += opt_size; remaining -= opt_size; ret = true; + } else if (mptcp_established_options_rm_addr(sk, &opt_size, remaining, opts)) { + *size += opt_size; + remaining -= opt_size; + ret = true; } return ret; |