[PATCH v2 03/24] crypto/cnxk: fallback to SG if headroom is not available

[Anoob Joseph <anoobj@marvell.com>]

From: Tejasree Kondoj <ktejasree@marvell.com>

Falling back to SG mode for cn9k lookaside IPsec
if headroom is not available.

Signed-off-by: Tejasree Kondoj <ktejasree@marvell.com>
---
 drivers/crypto/cnxk/cn9k_ipsec_la_ops.h | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/crypto/cnxk/cn9k_ipsec_la_ops.h b/drivers/crypto/cnxk/cn9k_ipsec_la_ops.h
index 85aacb803f..3d0db72775 100644
--- a/drivers/crypto/cnxk/cn9k_ipsec_la_ops.h
+++ b/drivers/crypto/cnxk/cn9k_ipsec_la_ops.h
@@ -82,19 +82,13 @@ process_outb_sa(struct cpt_qp_meta_info *m_info, struct rte_crypto_op *cop,
 	extend_tail = rlen - dlen;
 	pkt_len += extend_tail;
 
-	if (likely(m_src->next == NULL)) {
+	if (likely((m_src->next == NULL) && (hdr_len <= data_off))) {
 		if (unlikely(extend_tail > rte_pktmbuf_tailroom(m_src))) {
 			plt_dp_err("Not enough tail room (required: %d, available: %d)",
 				   extend_tail, rte_pktmbuf_tailroom(m_src));
 			return -ENOMEM;
 		}
 
-		if (unlikely(hdr_len > data_off)) {
-			plt_dp_err("Not enough head room (required: %d, available: %d)", hdr_len,
-				   rte_pktmbuf_headroom(m_src));
-			return -ENOMEM;
-		}
-
 		m_src->data_len = pkt_len;
 
 		hdr = PLT_PTR_ADD(m_src->buf_addr, data_off - hdr_len);
-- 
2.25.1