[PATCH v3 23/29] crypto/cnxk: fix extend tail calculation
From: Anoob Joseph <hidden>
Date: 2021-12-17 09:22:48
Subsystem:
crypto api, the rest · Maintainers:
Herbert Xu, "David S. Miller", Linus Torvalds
If the packet size to be incremented after IPsec processing is less
than size of hdr (size incremented before submitting), then extend_tail
can become negative. Allow negative values for the variable.
Fixes: 67a87e89561c ("crypto/cnxk: add cn9k lookaside IPsec datapath")
Cc: marchana@marvell.com
Signed-off-by: Anoob Joseph <redacted>
---
drivers/crypto/cnxk/cn9k_ipsec_la_ops.h | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/crypto/cnxk/cn9k_ipsec_la_ops.h b/drivers/crypto/cnxk/cn9k_ipsec_la_ops.h
index 2dc8913..2b0261e 100644
--- a/drivers/crypto/cnxk/cn9k_ipsec_la_ops.h
+++ b/drivers/crypto/cnxk/cn9k_ipsec_la_ops.h@@ -77,9 +77,10 @@ process_outb_sa(struct rte_crypto_op *cop, struct cn9k_ipsec_sa *sa, const unsigned int hdr_len = sizeof(struct roc_ie_on_outb_hdr); struct rte_crypto_sym_op *sym_op = cop->sym; struct rte_mbuf *m_src = sym_op->m_src; - uint32_t dlen, rlen, extend_tail; struct roc_ie_on_outb_sa *out_sa; struct roc_ie_on_outb_hdr *hdr; + uint32_t dlen, rlen; + int32_t extend_tail; out_sa = &sa->out_sa;
@@ -88,7 +89,8 @@ process_outb_sa(struct rte_crypto_op *cop, struct cn9k_ipsec_sa *sa, extend_tail = rlen - dlen; if (unlikely(extend_tail > rte_pktmbuf_tailroom(m_src))) { - plt_dp_err("Not enough tail room"); + plt_dp_err("Not enough tail room (required: %d, available: %d", + extend_tail, rte_pktmbuf_tailroom(m_src)); return -ENOMEM; }
--
2.7.4