diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h index 9c802a6b04d342de2f47ae4333d552e9711a4231..2ab8c758b46c7acaea3818295b106b63e674adb8 100644 --- a/include/linux/rtnetlink.h +++ b/include/linux/rtnetlink.h @@ -378,7 +378,7 @@ enum #define RTAX_FEATURE_ECN 0x00000001 #define RTAX_FEATURE_NO_SACK 0x00000002 -#define RTAX_FEATURE_TIMESTAMP 0x00000004 +#define RTAX_FEATURE_NO_TSTAMP 0x00000004 #define RTAX_FEATURE_ALLFRAG 0x00000008 struct rta_session diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 5fb25f97745188be000c5b6c0b8073da60f0eb44..6097491aa9fcd55e1098c361000be9450699e450 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -3755,7 +3755,8 @@ void tcp_parse_options(struct sk_buff *skb, struct tcp_options_received *opt_rx, case TCPOPT_TIMESTAMP: if ((opsize == TCPOLEN_TIMESTAMP) && ((estab && opt_rx->tstamp_ok) || - (!estab && sysctl_tcp_timestamps))) { + (!estab && sysctl_tcp_timestamps && + !dst_feature(dst, RTAX_FEATURE_NO_TSTAMP)))) { opt_rx->saw_tstamp = 1; opt_rx->rcv_tsval = get_unaligned_be32(ptr); opt_rx->rcv_tsecr = get_unaligned_be32(ptr + 4); diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index b35802af3c4c45dc97ee8813a38df7cad8c67c30..8819eba8ebb8b26225e8c9d4c6f27fd4da41f83f 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -488,7 +488,9 @@ static unsigned tcp_syn_options(struct sock *sk, struct sk_buff *skb, opts->mss = tcp_advertise_mss(sk); size += TCPOLEN_MSS_ALIGNED; - if (likely(sysctl_tcp_timestamps && *md5 == NULL)) { + if (likely(sysctl_tcp_timestamps && + !dst_feature(dst, RTAX_FEATURE_NO_TSTAMP) && + *md5 == NULL)) { opts->options |= OPTION_TS; opts->tsval = TCP_SKB_CB(skb)->when; opts->tsecr = tp->rx_opt.ts_recent; @@ -2317,7 +2319,9 @@ static void tcp_connect_init(struct sock *sk) * See tcp_input.c:tcp_rcv_state_process case TCP_SYN_SENT. */ tp->tcp_header_len = sizeof(struct tcphdr) + - (sysctl_tcp_timestamps ? TCPOLEN_TSTAMP_ALIGNED : 0); + (sysctl_tcp_timestamps && + (!dst_feature(dst, RTAX_FEATURE_NO_TSTAMP) ? + TCPOLEN_TSTAMP_ALIGNED : 0)); #ifdef CONFIG_TCP_MD5SIG if (tp->af_specific->md5_lookup(sk, sk) != NULL)