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From: Anatoly Burakov <anatoly.burakov@intel.com>
To: dev@dpdk.org
Cc: Adrien Mazarguil <adrien.mazarguil@6wind.com>,
Nelio Laranjeiro <nelio.laranjeiro@6wind.com>,
Yongseok Koh <yskoh@mellanox.com>, keith.wiles@intel.com,
jianfeng.tan@intel.com, andras.kovacs@ericsson.com,
laszlo.vadkeri@ericsson.com, benjamin.walker@intel.com,
bruce.richardson@intel.com, thomas@monjalon.net,
konstantin.ananyev@intel.com, kuralamudhan.ramakrishnan@intel.com,
louise.m.daly@intel.com, pepperjo@japf.ch,
jerin.jacob@caviumnetworks.com, hemant.agrawal@nxp.com,
olivier.matz@6wind.com, shreyansh.jain@nxp.com,
gowrishankar.m@linux.vnet.ibm.com
Date: Wed, 11 Apr 2018 13:30:19 +0100
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Subject: [dpdk-dev] [PATCH v6 44/70] net/mlx5: use virt2memseg instead of
iteration
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Reduce dependency on internal details of EAL memory subsystem, and
simplify code.
Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
Tested-by: Santosh Shukla <santosh.shukla@caviumnetworks.com>
Tested-by: Hemant Agrawal <hemant.agrawal@nxp.com>
Tested-by: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
---
drivers/net/mlx5/mlx5_mr.c | 19 ++++++++-----------
1 file changed, 8 insertions(+), 11 deletions(-)
diff --git a/drivers/net/mlx5/mlx5_mr.c b/drivers/net/mlx5/mlx5_mr.c
index 58afeb7..c96e134 100644
--- a/drivers/net/mlx5/mlx5_mr.c
+++ b/drivers/net/mlx5/mlx5_mr.c
@@ -234,10 +234,9 @@ struct mlx5_mr *
mlx5_mr_new(struct rte_eth_dev *dev, struct rte_mempool *mp)
{
struct priv *priv = dev->data->dev_private;
- const struct rte_memseg *ms = rte_eal_get_physmem_layout();
+ const struct rte_memseg *ms;
uintptr_t start;
uintptr_t end;
- unsigned int i;
struct mlx5_mr *mr;
mr = rte_zmalloc_socket(__func__, sizeof(*mr), 0, mp->socket_id);
@@ -261,17 +260,15 @@ mlx5_mr_new(struct rte_eth_dev *dev, struct rte_mempool *mp)
/* Save original addresses for exact MR lookup. */
mr->start = start;
mr->end = end;
+
/* Round start and end to page boundary if found in memory segments. */
- for (i = 0; (i < RTE_MAX_MEMSEG) && (ms[i].addr != NULL); ++i) {
- uintptr_t addr = (uintptr_t)ms[i].addr;
- size_t len = ms[i].len;
- unsigned int align = ms[i].hugepage_sz;
+ ms = rte_mem_virt2memseg((void *)start);
+ if (ms != NULL)
+ start = RTE_ALIGN_FLOOR(start, ms->hugepage_sz);
+ ms = rte_mem_virt2memseg((void *)end);
+ if (ms != NULL)
+ end = RTE_ALIGN_CEIL(end, ms->hugepage_sz);
- if ((start > addr) && (start < addr + len))
- start = RTE_ALIGN_FLOOR(start, align);
- if ((end > addr) && (end < addr + len))
- end = RTE_ALIGN_CEIL(end, align);
- }
DRV_LOG(DEBUG,
"port %u mempool %p using start=%p end=%p size=%zu for memory"
" region",
--
2.7.4