@@ -333,6 +333,9 @@ struct tcp_sock {
* the first SYN. */
u32 undo_marker; /* snd_una upon a new recovery episode. */
int undo_retrans; /* number of undoable retransmissions. */
+ u64 bytes_retrans; /* RFC4898 tcpEStatsPerfOctetsRetrans
+ * Total data bytes retransmitted
+ */
u32 total_retrans; /* Total retransmits for entire connection */
u32 urg_seq; /* Seq of received urgent pointer */
@@ -237,6 +237,7 @@ struct tcp_info {
__u32 tcpi_delivered_ce;
__u64 tcpi_bytes_sent; /* RFC4898 tcpEStatsPerfHCDataOctetsOut */
+ __u64 tcpi_bytes_retrans; /* RFC4898 tcpEStatsPerfOctetsRetrans */
};
/* netlink attributes types for SCM_TIMESTAMPING_OPT_STATS */
@@ -260,6 +261,7 @@ enum {
TCP_NLA_DELIVERED, /* Data pkts delivered incl. out-of-order */
TCP_NLA_DELIVERED_CE, /* Like above but only ones w/ CE marks */
TCP_NLA_BYTES_SENT, /* Data bytes sent including retransmission */
+ TCP_NLA_BYTES_RETRANS, /* Data bytes retransmitted */
};
/* for TCP_MD5SIG socket option */
@@ -2595,6 +2595,7 @@ int tcp_disconnect(struct sock *sk, int flags)
tcp_saved_syn_free(tp);
tp->compressed_ack = 0;
tp->bytes_sent = 0;
+ tp->bytes_retrans = 0;
/* Clean up fastopen related fields */
tcp_free_fastopen_req(tp);
@@ -3203,6 +3204,7 @@ void tcp_get_info(struct sock *sk, struct tcp_info *info)
info->tcpi_delivered = tp->delivered;
info->tcpi_delivered_ce = tp->delivered_ce;
info->tcpi_bytes_sent = tp->bytes_sent;
+ info->tcpi_bytes_retrans = tp->bytes_retrans;
unlock_sock_fast(sk, slow);
}
EXPORT_SYMBOL_GPL(tcp_get_info);
@@ -3215,7 +3217,7 @@ struct sk_buff *tcp_get_timestamping_opt_stats(const struct sock *sk)
u64 rate64;
u32 rate;
- stats = alloc_skb(8 * nla_total_size_64bit(sizeof(u64)) +
+ stats = alloc_skb(9 * nla_total_size_64bit(sizeof(u64)) +
7 * nla_total_size(sizeof(u32)) +
3 * nla_total_size(sizeof(u8)), GFP_ATOMIC);
if (!stats)
@@ -3255,6 +3257,8 @@ struct sk_buff *tcp_get_timestamping_opt_stats(const struct sock *sk)
nla_put_u64_64bit(stats, TCP_NLA_BYTES_SENT, tp->bytes_sent,
TCP_NLA_PAD);
+ nla_put_u64_64bit(stats, TCP_NLA_BYTES_RETRANS, tp->bytes_retrans,
+ TCP_NLA_PAD);
return stats;
}
@@ -2871,6 +2871,7 @@ int __tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb, int segs)
if (TCP_SKB_CB(skb)->tcp_flags & TCPHDR_SYN)
__NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPSYNRETRANS);
tp->total_retrans += segs;
+ tp->bytes_retrans += skb->len;
/* make sure skb->data is aligned on arches that require it
* and check if ack-trimming & collapsing extended the headroom