[dpdk-stable] [PATCH BUG 335 1/3] net/dpaa: fix compilation error with 0 headroom

[Hemant Agrawal <hemant.agrawal@nxp.com>]

When using RTE_PKTMBUF_HEADROOM as 0, dpaa driver throws compilation error
error "Annotation requirement is more than RTE_PKTMBUF_HEADROOM"

This patch change it into run-time check.
Reported as: https://bugs.dpdk.org/show_bug.cgi?id=335

Fixes: ff9e112d7870 ("net/dpaa: add NXP DPAA PMD driver skeleton")
Cc: stable@dpdk.org

Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>
---
 drivers/net/dpaa/dpaa_ethdev.c | 10 ++++++++++
 drivers/net/dpaa/dpaa_ethdev.h |  4 ----
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/drivers/net/dpaa/dpaa_ethdev.c b/drivers/net/dpaa/dpaa_ethdev.c
index adc0bd5ac..7154fb9b4 100644
--- a/drivers/net/dpaa/dpaa_ethdev.c
+++ b/drivers/net/dpaa/dpaa_ethdev.c
@@ -1469,6 +1469,16 @@ rte_dpaa_probe(struct rte_dpaa_driver *dpaa_drv __rte_unused,
 
 	PMD_INIT_FUNC_TRACE();
 
+	if ((DPAA_MBUF_HW_ANNOTATION + DPAA_FD_PTA_SIZE) >
+		RTE_PKTMBUF_HEADROOM) {
+		DPAA_PMD_ERR(
+		"RTE_PKTMBUF_HEADROOM(%d) shall be > DPAA Annotation req(%d)",
+		RTE_PKTMBUF_HEADROOM,
+		DPAA_MBUF_HW_ANNOTATION + DPAA_FD_PTA_SIZE);
+
+		return -1;
+	}
+
 	/* In case of secondary process, the device is already configured
 	 * and no further action is required, except portal initialization
 	 * and verifying secondary attachment to port name.
diff --git a/drivers/net/dpaa/dpaa_ethdev.h b/drivers/net/dpaa/dpaa_ethdev.h
index 18bc7dfa8..f63a5f164 100644
--- a/drivers/net/dpaa/dpaa_ethdev.h
+++ b/drivers/net/dpaa/dpaa_ethdev.h
@@ -22,10 +22,6 @@
 #define DPAA_MBUF_HW_ANNOTATION		64
 #define DPAA_FD_PTA_SIZE		64
 
-#if (DPAA_MBUF_HW_ANNOTATION + DPAA_FD_PTA_SIZE) > RTE_PKTMBUF_HEADROOM
-#error "Annotation requirement is more than RTE_PKTMBUF_HEADROOM"
-#endif
-
 /* mbuf->seqn will be used to store event entry index for
  * driver specific usage. For parallel mode queues, invalid
  * index will be set and for atomic mode queues, valid value
-- 
2.17.1