From eab71b8463c9d3aeeb8c222ff6159b4125d23019 Mon Sep 17 00:00:00 2001 From: Scott Wasson Date: Fri, 14 Feb 2020 10:00:52 +0000 Subject: [PATCH] kni: fix not contiguous FIFO 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 Acked-by: Ferruh Yigit --- lib/librte_kni/rte_kni.c | 21 ++++++++++++++------- 1 file changed, 14 insertions(+), 7 deletions(-) diff --git a/lib/librte_kni/rte_kni.c b/lib/librte_kni/rte_kni.c index e388751e33..bcf82cc2d5 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; -- 2.20.1