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Commit 8a59359c authored Jan 08, 2014 by Christoph Paasch Committed by David S. Miller Jan 10, 2014

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>

parent a5443028

include/uapi/linux/tcp_metrics.h

+2 −0

Original line number	Original line	Diff line number	Diff line
	@@ -35,6 +35,8 @@ enum {
	TCP_METRICS_ATTR_FOPEN_SYN_DROPS, /* u16, count of drops */		TCP_METRICS_ATTR_FOPEN_SYN_DROPS, /* u16, count of drops */
	TCP_METRICS_ATTR_FOPEN_SYN_DROP_TS, /* msecs age */		TCP_METRICS_ATTR_FOPEN_SYN_DROP_TS, /* msecs age */
	TCP_METRICS_ATTR_FOPEN_COOKIE, /* binary */		TCP_METRICS_ATTR_FOPEN_COOKIE, /* binary */
			TCP_METRICS_ATTR_SADDR_IPV4, /* u32 */
			TCP_METRICS_ATTR_SADDR_IPV6, /* binary */

	__TCP_METRICS_ATTR_MAX,		__TCP_METRICS_ATTR_MAX,
	};		};

net/ipv4/tcp_metrics.c

+6 −0

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