diff options
Diffstat (limited to 'net/mptcp')
| -rw-r--r-- | net/mptcp/options.c | 37 |
1 files changed, 19 insertions, 18 deletions
diff --git a/net/mptcp/options.c b/net/mptcp/options.c index 6b7b4b67f18c..c0cf0f5b9043 100644 --- a/net/mptcp/options.c +++ b/net/mptcp/options.c @@ -1071,15 +1071,16 @@ void mptcp_write_options(__be32 *ptr, const struct tcp_sock *tp, mp_capable_done: if (OPTION_MPTCP_ADD_ADDR & opts->suboptions) { - if (opts->ahmac) - *ptr++ = mptcp_option(MPTCPOPT_ADD_ADDR, - TCPOLEN_MPTCP_ADD_ADDR, 0, - opts->addr_id); - else - *ptr++ = mptcp_option(MPTCPOPT_ADD_ADDR, - TCPOLEN_MPTCP_ADD_ADDR_BASE, - MPTCP_ADDR_ECHO, - opts->addr_id); + u8 len = TCPOLEN_MPTCP_ADD_ADDR_BASE; + u8 echo = MPTCP_ADDR_ECHO; + + if (opts->ahmac) { + len += sizeof(opts->ahmac); + echo = 0; + } + + *ptr++ = mptcp_option(MPTCPOPT_ADD_ADDR, + len, echo, opts->addr_id); memcpy((u8 *)ptr, (u8 *)&opts->addr.s_addr, 4); ptr += 1; if (opts->ahmac) { @@ -1090,15 +1091,15 @@ mp_capable_done: #if IS_ENABLED(CONFIG_MPTCP_IPV6) if (OPTION_MPTCP_ADD_ADDR6 & opts->suboptions) { - if (opts->ahmac) - *ptr++ = mptcp_option(MPTCPOPT_ADD_ADDR, - TCPOLEN_MPTCP_ADD_ADDR6, 0, - opts->addr_id); - else - *ptr++ = mptcp_option(MPTCPOPT_ADD_ADDR, - TCPOLEN_MPTCP_ADD_ADDR6_BASE, - MPTCP_ADDR_ECHO, - opts->addr_id); + u8 len = TCPOLEN_MPTCP_ADD_ADDR6_BASE; + u8 echo = MPTCP_ADDR_ECHO; + + if (opts->ahmac) { + len += sizeof(opts->ahmac); + echo = 0; + } + *ptr++ = mptcp_option(MPTCPOPT_ADD_ADDR, + len, echo, opts->addr_id); memcpy((u8 *)ptr, opts->addr6.s6_addr, 16); ptr += 4; if (opts->ahmac) { |