From 59ab8ef2b0430268fcef5548364cc2308082ddf4 Mon Sep 17 00:00:00 2001
From: hiren <hiren@ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f>
Date: Mon, 6 Apr 2015 22:41:13 +0000
Subject: [PATCH] MFC r280233, r280237, r280441

Add connection flowid and flowtype to siftr(4).

Sponsored by:	Limelight Networks


git-svn-id: svn://svn.freebsd.org/base/stable/10@281174 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
---
 share/man/man4/siftr.4 | 18 +++++++++++++++++-
 sys/netinet/siftr.c    | 18 ++++++++++++++----
 2 files changed, 31 insertions(+), 5 deletions(-)

diff --git a/share/man/man4/siftr.4 b/share/man/man4/siftr.4
index ab92f77b9..83ad63d76 100644
--- a/share/man/man4/siftr.4
+++ b/share/man/man4/siftr.4
@@ -30,7 +30,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd November 12, 2010
+.Dd March 18, 2015
 .Dt SIFTR 4
 .Os
 .Sh NAME
@@ -335,6 +335,22 @@ Bytes acknowledged via SACK are not excluded from this count.
 .It Va 26
 The current number of segments in the reassembly queue.
 .El
+.Bl -tag -offset indent -width Va
+.It Va 27
+Flowid for the connection.
+A caveat: Zero '0' either represents a valid flowid or a default value when it's
+not being set. There is no easy way to differentiate without looking at actual
+network interface card and drivers being used.
+.El
+.Bl -tag -offset indent -width Va
+.It Va 28
+Flow type for the connection.
+Flowtype defines which protocol fields are hashed to produce the flowid. 
+A complete listing is available in
+.Pa sys/mbuf.h
+under
+.Dv M_HASHTYPE_* .
+.El
 .Pp
 The third type of log message is written to the file when the module is disabled
 and ceases collecting data from the running kernel.
diff --git a/sys/netinet/siftr.c b/sys/netinet/siftr.c
index a4844814c..aae608d23 100644
--- a/sys/netinet/siftr.c
+++ b/sys/netinet/siftr.c
@@ -225,6 +225,10 @@ struct pkt_node {
 	u_int			sent_inflight_bytes;
 	/* Number of segments currently in the reassembly queue. */
 	int			t_segqlen;
+	/* Flowid for the connection. */
+	u_int			flowid;	
+	/* Flow type for the connection. */
+	u_int			flowtype;	
 	/* Link to next pkt_node in the list. */
 	STAILQ_ENTRY(pkt_node)	nodes;
 };
@@ -442,7 +446,7 @@ siftr_process_pkt(struct pkt_node * pkt_node)
 		    MAX_LOG_MSG_LEN,
 		    "%c,0x%08x,%zd.%06ld,%x:%x:%x:%x:%x:%x:%x:%x,%u,%x:%x:%x:"
 		    "%x:%x:%x:%x:%x,%u,%ld,%ld,%ld,%ld,%ld,%u,%u,%u,%u,%u,%u,"
-		    "%u,%d,%u,%u,%u,%u,%u,%u\n",
+		    "%u,%d,%u,%u,%u,%u,%u,%u,%u,%u\n",
 		    direction[pkt_node->direction],
 		    pkt_node->hash,
 		    pkt_node->tval.tv_sec,
@@ -483,7 +487,9 @@ siftr_process_pkt(struct pkt_node * pkt_node)
 		    pkt_node->rcv_buf_hiwater,
 		    pkt_node->rcv_buf_cc,
 		    pkt_node->sent_inflight_bytes,
-		    pkt_node->t_segqlen);
+		    pkt_node->t_segqlen,
+		    pkt_node->flowid,
+		    pkt_node->flowtype);
 	} else { /* IPv4 packet */
 		pkt_node->ip_laddr[0] = FIRST_OCTET(pkt_node->ip_laddr[3]);
 		pkt_node->ip_laddr[1] = SECOND_OCTET(pkt_node->ip_laddr[3]);
@@ -499,7 +505,7 @@ siftr_process_pkt(struct pkt_node * pkt_node)
 		log_buf->ae_bytesused = snprintf(log_buf->ae_data,
 		    MAX_LOG_MSG_LEN,
 		    "%c,0x%08x,%jd.%06ld,%u.%u.%u.%u,%u,%u.%u.%u.%u,%u,%ld,%ld,"
-		    "%ld,%ld,%ld,%u,%u,%u,%u,%u,%u,%u,%d,%u,%u,%u,%u,%u,%u\n",
+		    "%ld,%ld,%ld,%u,%u,%u,%u,%u,%u,%u,%d,%u,%u,%u,%u,%u,%u,%u,%u\n",
 		    direction[pkt_node->direction],
 		    pkt_node->hash,
 		    (intmax_t)pkt_node->tval.tv_sec,
@@ -532,7 +538,9 @@ siftr_process_pkt(struct pkt_node * pkt_node)
 		    pkt_node->rcv_buf_hiwater,
 		    pkt_node->rcv_buf_cc,
 		    pkt_node->sent_inflight_bytes,
-		    pkt_node->t_segqlen);
+		    pkt_node->t_segqlen,
+		    pkt_node->flowid,
+		    pkt_node->flowtype);
 #ifdef SIFTR_IPV6
 	}
 #endif
@@ -785,6 +793,8 @@ siftr_siftdata(struct pkt_node *pn, struct inpcb *inp, struct tcpcb *tp,
 	pn->rcv_buf_cc = inp->inp_socket->so_rcv.sb_cc;
 	pn->sent_inflight_bytes = tp->snd_max - tp->snd_una;
 	pn->t_segqlen = tp->t_segqlen;
+	pn->flowid = inp->inp_flowid;
+	pn->flowtype = inp->inp_flowtype;
 
 	/* We've finished accessing the tcb so release the lock. */
 	if (inp_locally_locked)
-- 
2.45.2