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From: <abhimanyu.saini@xilinx.com>
To: <dev@dpdk.org>
Cc: <chenbo.xia@intel.com>, <maxime.coquelin@redhat.com>,
	<andrew.rybchenko@oktetlabs.ru>,
	Abhimanyu Saini <asaini@xilinx.com>
Subject: [PATCH] vdpa/sfc: make MCDI memzone name unique
Date: Tue, 11 Jan 2022 11:03:03 +0530	[thread overview]
Message-ID: <20220111053303.18162-1-asaini@xilinx.com> (raw)

From: Abhimanyu Saini <asaini@xilinx.com>

Buffer for MCDI channel is allocated using rte_memzone_reserve_aligned
with zone name 'mcdi'. Since multiple MCDI channels are needed to
support multiple VF(s) and rte_memzone_reserve_aligned expects unique
zone names, append PCI address to zone name to make it unique.

Signed-off-by: Abhimanyu Saini <asaini@xilinx.com>
---
 drivers/vdpa/sfc/sfc_vdpa_hw.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/drivers/vdpa/sfc/sfc_vdpa_hw.c b/drivers/vdpa/sfc/sfc_vdpa_hw.c
index fd1fee7..a7018b1 100644
--- a/drivers/vdpa/sfc/sfc_vdpa_hw.c
+++ b/drivers/vdpa/sfc/sfc_vdpa_hw.c
@@ -25,21 +25,30 @@
 {
        uint64_t mcdi_iova;
        size_t mcdi_buff_size;
+       char mz_name[RTE_MEMZONE_NAMESIZE];
        const struct rte_memzone *mz = NULL;
        int numa_node = sva->pdev->device.numa_node;
        int ret;

        mcdi_buff_size = RTE_ALIGN_CEIL(len, PAGE_SIZE);
+       ret = snprintf(mz_name, RTE_MEMZONE_NAMESIZE, "%s_%s",
+                      sva->pdev->name, name);
+       if (ret < 0 || ret >= RTE_MEMZONE_NAMESIZE) {
+               sfc_vdpa_err(sva, "%s_%s too long to fit in mz_name",
+                            sva->pdev->name, name);
+               return -EINVAL;
+       }

-       sfc_vdpa_log_init(sva, "name=%s, len=%zu", name, len);
+       sfc_vdpa_log_init(sva, "name=%s, len=%zu", mz_name, len);

-       mz = rte_memzone_reserve_aligned(name, mcdi_buff_size,
+       mz = rte_memzone_reserve_aligned(mz_name, mcdi_buff_size,
                                         numa_node,
                                         RTE_MEMZONE_IOVA_CONTIG,
                                         PAGE_SIZE);
        if (mz == NULL) {
                sfc_vdpa_err(sva, "cannot reserve memory for %s: len=%#x: %s",
-                            name, (unsigned int)len, rte_strerror(rte_errno));
+                            mz_name, (unsigned int)len,
+                            rte_strerror(rte_errno));
                return -ENOMEM;
        }

--
1.8.3.1

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             reply	other threads:[~2022-01-11  5:33 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-11  5:33 abhimanyu.saini [this message]
2022-01-14  7:06 ` Xia, Chenbo
2022-01-17 11:29 ` [PATCH v2] " abhimanyu.saini
2022-02-01  8:21   ` Maxime Coquelin
2022-02-14 10:51   ` [PATCH v3] " abhimanyu.saini
2022-02-15 10:56     ` Maxime Coquelin
2022-02-15 10:59       ` Maxime Coquelin
2022-02-15 12:21     ` Maxime Coquelin
2022-02-17  8:54     ` Maxime Coquelin
  -- strict thread matches above, loose matches on Subject: below --
2022-01-04  3:54 [PATCH] " abhimanyu.saini

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