From 34385d80a34f453c8fdb545efa6698be7cf6b687 Mon Sep 17 00:00:00 2001
From: Ben Walker <benjamin.walker@intel.com>
Date: Tue, 1 Oct 2019 13:47:30 -0700
Subject: [PATCH] nvmf/tcp: Add pointer to qpair from PDU

It's important to be able to recover full context from just
the PDU in the future.

Change-Id: I3d1f3c326299b1237b42dbe33d340a282c3bc5bb
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/470531
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom SPDK FC-NVMe CI <spdk-ci.pdl@broadcom.com>
Reviewed-by: Paul Luse <paul.e.luse@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ziye Yang <ziye.yang@intel.com>
---
 include/spdk_internal/nvme_tcp.h | 1 +
 lib/nvmf/tcp.c                   | 1 +
 2 files changed, 2 insertions(+)

diff --git a/include/spdk_internal/nvme_tcp.h b/include/spdk_internal/nvme_tcp.h
index 5240b44b5..99f12b371 100644
--- a/include/spdk_internal/nvme_tcp.h
+++ b/include/spdk_internal/nvme_tcp.h
@@ -125,6 +125,7 @@ struct nvme_tcp_pdu {
 	struct spdk_dif_ctx				*dif_ctx;
 
 	void						*req; /* data tied to a tcp request */
+	void						*qpair;
 };
 
 enum nvme_tcp_pdu_recv_state {
diff --git a/lib/nvmf/tcp.c b/lib/nvmf/tcp.c
index 82a9c9be3..b842152df 100644
--- a/lib/nvmf/tcp.c
+++ b/lib/nvmf/tcp.c
@@ -326,6 +326,7 @@ spdk_nvmf_tcp_pdu_get(struct spdk_nvmf_tcp_qpair *tqpair)
 	tqpair->free_pdu_num--;
 	TAILQ_REMOVE(&tqpair->free_queue, pdu, tailq);
 	memset(pdu, 0, sizeof(*pdu));
+	pdu->qpair = tqpair;
 	pdu->ref = 1;
 	pdu->hdr = &pdu->hdr_mem;