[v2] kni: fix not contiguous FIFO
diff mbox series

Message ID 20200214100052.2795482-1-ferruh.yigit@intel.com
State Accepted
Delegated to: David Marchand
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Series
  • [v2] kni: fix not contiguous FIFO
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Context Check Description
ci/Intel-compilation fail apply issues
ci/travis-robot warning Travis build: failed
ci/iol-mellanox-Performance success Performance Testing PASS
ci/iol-testing success Testing PASS
ci/checkpatch success coding style OK

Commit Message

Ferruh Yigit Feb. 14, 2020, 10 a.m. UTC
From: Scott Wasson <scott_wasson@affirmednetworks.com>

KNI requires FIFO to be physically contiguous, with existing
'rte_memzone_reserve()' API this is not guaranteed by default and as a
result KNI rings and packet delivery may be broken if reserved memory
is not physically contiguous.

Fixing it by providing 'RTE_MEMZONE_IOVA_CONTIG' flag to ask physically
contiguous memory.

Fixes: 23fa86e529e4 ("memzone: enable IOVA-contiguous reserving")
Cc: stable@dpdk.org

Signed-off-by: Scott Wasson <scott_wasson@affirmednetworks.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
---
 lib/librte_kni/rte_kni.c | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

Comments

David Marchand Feb. 14, 2020, 11:30 a.m. UTC | #1
On Fri, Feb 14, 2020 at 11:01 AM Ferruh Yigit <ferruh.yigit@intel.com> wrote:
>
> From: Scott Wasson <scott_wasson@affirmednetworks.com>
>
> KNI requires FIFO to be physically contiguous, with existing
> 'rte_memzone_reserve()' API this is not guaranteed by default and as a
> result KNI rings and packet delivery may be broken if reserved memory
> is not physically contiguous.
>
> Fixing it by providing 'RTE_MEMZONE_IOVA_CONTIG' flag to ask physically
> contiguous memory.
>

Bugzilla ID: 389
> Fixes: 23fa86e529e4 ("memzone: enable IOVA-contiguous reserving")
> Cc: stable@dpdk.org
>
> Signed-off-by: Scott Wasson <scott_wasson@affirmednetworks.com>
> Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>

Applied, thanks.


--
David Marchand

Patch
diff mbox series

diff --git a/lib/librte_kni/rte_kni.c b/lib/librte_kni/rte_kni.c
index e388751e3..bcf82cc2d 100644
--- a/lib/librte_kni/rte_kni.c
+++ b/lib/librte_kni/rte_kni.c
@@ -145,31 +145,38 @@  kni_reserve_mz(struct rte_kni *kni)
 	char mz_name[RTE_MEMZONE_NAMESIZE];
 
 	snprintf(mz_name, RTE_MEMZONE_NAMESIZE, KNI_TX_Q_MZ_NAME_FMT, kni->name);
-	kni->m_tx_q = rte_memzone_reserve(mz_name, KNI_FIFO_SIZE, SOCKET_ID_ANY, 0);
+	kni->m_tx_q = rte_memzone_reserve(mz_name, KNI_FIFO_SIZE, SOCKET_ID_ANY,
+			RTE_MEMZONE_IOVA_CONTIG);
 	KNI_MEM_CHECK(kni->m_tx_q == NULL, tx_q_fail);
 
 	snprintf(mz_name, RTE_MEMZONE_NAMESIZE, KNI_RX_Q_MZ_NAME_FMT, kni->name);
-	kni->m_rx_q = rte_memzone_reserve(mz_name, KNI_FIFO_SIZE, SOCKET_ID_ANY, 0);
+	kni->m_rx_q = rte_memzone_reserve(mz_name, KNI_FIFO_SIZE, SOCKET_ID_ANY,
+			RTE_MEMZONE_IOVA_CONTIG);
 	KNI_MEM_CHECK(kni->m_rx_q == NULL, rx_q_fail);
 
 	snprintf(mz_name, RTE_MEMZONE_NAMESIZE, KNI_ALLOC_Q_MZ_NAME_FMT, kni->name);
-	kni->m_alloc_q = rte_memzone_reserve(mz_name, KNI_FIFO_SIZE, SOCKET_ID_ANY, 0);
+	kni->m_alloc_q = rte_memzone_reserve(mz_name, KNI_FIFO_SIZE, SOCKET_ID_ANY,
+			RTE_MEMZONE_IOVA_CONTIG);
 	KNI_MEM_CHECK(kni->m_alloc_q == NULL, alloc_q_fail);
 
 	snprintf(mz_name, RTE_MEMZONE_NAMESIZE, KNI_FREE_Q_MZ_NAME_FMT, kni->name);
-	kni->m_free_q = rte_memzone_reserve(mz_name, KNI_FIFO_SIZE, SOCKET_ID_ANY, 0);
+	kni->m_free_q = rte_memzone_reserve(mz_name, KNI_FIFO_SIZE, SOCKET_ID_ANY,
+			RTE_MEMZONE_IOVA_CONTIG);
 	KNI_MEM_CHECK(kni->m_free_q == NULL, free_q_fail);
 
 	snprintf(mz_name, RTE_MEMZONE_NAMESIZE, KNI_REQ_Q_MZ_NAME_FMT, kni->name);
-	kni->m_req_q = rte_memzone_reserve(mz_name, KNI_FIFO_SIZE, SOCKET_ID_ANY, 0);
+	kni->m_req_q = rte_memzone_reserve(mz_name, KNI_FIFO_SIZE, SOCKET_ID_ANY,
+			RTE_MEMZONE_IOVA_CONTIG);
 	KNI_MEM_CHECK(kni->m_req_q == NULL, req_q_fail);
 
 	snprintf(mz_name, RTE_MEMZONE_NAMESIZE, KNI_RESP_Q_MZ_NAME_FMT, kni->name);
-	kni->m_resp_q = rte_memzone_reserve(mz_name, KNI_FIFO_SIZE, SOCKET_ID_ANY, 0);
+	kni->m_resp_q = rte_memzone_reserve(mz_name, KNI_FIFO_SIZE, SOCKET_ID_ANY,
+			RTE_MEMZONE_IOVA_CONTIG);
 	KNI_MEM_CHECK(kni->m_resp_q == NULL, resp_q_fail);
 
 	snprintf(mz_name, RTE_MEMZONE_NAMESIZE, KNI_SYNC_ADDR_MZ_NAME_FMT, kni->name);
-	kni->m_sync_addr = rte_memzone_reserve(mz_name, KNI_FIFO_SIZE, SOCKET_ID_ANY, 0);
+	kni->m_sync_addr = rte_memzone_reserve(mz_name, KNI_FIFO_SIZE, SOCKET_ID_ANY,
+			RTE_MEMZONE_IOVA_CONTIG);
 	KNI_MEM_CHECK(kni->m_sync_addr == NULL, sync_addr_fail);
 
 	return 0;