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tcp: metrics: New netlink attribute for src IP and dumped in netlink reply 

This patch adds a new netlink attribute for the source-IP and appends it
to the netlink reply. Now, iproute2 can have access to the source-IP.

Signed-off-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Christoph Paasch 2014-01-08 16:05:57 +01:00 committed by David S. Miller
parent a544302820
commit 8a59359cb8
2 changed files with 8 additions and 0 deletions
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2
include/uapi/linux/tcp_metrics.h
View File

@ -35,6 +35,8 @@ enum {
TCP_METRICS_ATTR_FOPEN_SYN_DROPS, /* u16, count of drops */
TCP_METRICS_ATTR_FOPEN_SYN_DROP_TS, /* msecs age */
TCP_METRICS_ATTR_FOPEN_COOKIE, /* binary */
TCP_METRICS_ATTR_SADDR_IPV4, /* u32 */
TCP_METRICS_ATTR_SADDR_IPV6, /* binary */
__TCP_METRICS_ATTR_MAX,
};

6
net/ipv4/tcp_metrics.c
View File

@ -745,11 +745,17 @@ static int tcp_metrics_fill_info(struct sk_buff *msg,
if (nla_put_be32(msg, TCP_METRICS_ATTR_ADDR_IPV4,
tm->tcpm_daddr.addr.a4) < 0)
goto nla_put_failure;
if (nla_put_be32(msg, TCP_METRICS_ATTR_SADDR_IPV4,
tm->tcpm_saddr.addr.a4) < 0)
goto nla_put_failure;
break;
case AF_INET6:
if (nla_put(msg, TCP_METRICS_ATTR_ADDR_IPV6, 16,
tm->tcpm_daddr.addr.a6) < 0)
goto nla_put_failure;
if (nla_put(msg, TCP_METRICS_ATTR_SADDR_IPV6, 16,
tm->tcpm_saddr.addr.a6) < 0)
goto nla_put_failure;
break;
default:
return -EAFNOSUPPORT;