From: Ratheesh Kannoth <rkannoth@marvell.com>
To: <netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Cc: <sgoutham@marvell.com>, <davem@davemloft.net>,
<edumazet@google.com>, <horms@kernel.org>, <kuba@kernel.org>,
<pabeni@redhat.com>, <bcreeley@amd.com>, <sbhatta@marvell.com>,
<gakula@marvell.com>, <hkelam@marvell.com>, <sumang@marvell.com>,
Ratheesh Kannoth <rkannoth@marvell.com>
Subject: [PATCH net v3] octeontx2-af: Initialize maps.
Date: Wed, 31 Jan 2024 08:11:18 +0530 [thread overview]
Message-ID: <20240131024118.254758-1-rkannoth@marvell.com> (raw)
kmalloc_array() without __GFP_ZERO flag does not initialize
memory to zero. This causes issues. Use __GFP_ZERO flag for maps and
bitmap_zalloc() for bimaps.
Fixes: dd7842878633 ("octeontx2-af: Add new devlink param to configure maximum usable NIX block LFs")
Signed-off-by: Ratheesh Kannoth <rkannoth@marvell.com>
---
ChangeLogs:
v2 -> v3: Used GFP_ZERO for normal map arrays
v1 -> v2: Used bitmap_zalloc() API.
v0 -> v1: Removed devm_kcalloc()._
---
.../ethernet/marvell/octeontx2/af/rvu_npc.c | 26 ++++++++++---------
1 file changed, 14 insertions(+), 12 deletions(-)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
index 167145bdcb75..6a8f0efd96a5 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc.c
@@ -1850,8 +1850,8 @@ void npc_mcam_rsrcs_deinit(struct rvu *rvu)
{
struct npc_mcam *mcam = &rvu->hw->mcam;
- kfree(mcam->bmap);
- kfree(mcam->bmap_reverse);
+ bitmap_free(mcam->bmap);
+ bitmap_free(mcam->bmap_reverse);
kfree(mcam->entry2pfvf_map);
kfree(mcam->cntr2pfvf_map);
kfree(mcam->entry2cntr_map);
@@ -1904,13 +1904,11 @@ int npc_mcam_rsrcs_init(struct rvu *rvu, int blkaddr)
mcam->pf_offset = mcam->nixlf_offset + nixlf_count;
/* Allocate bitmaps for managing MCAM entries */
- mcam->bmap = kmalloc_array(BITS_TO_LONGS(mcam->bmap_entries),
- sizeof(long), GFP_KERNEL);
+ mcam->bmap = bitmap_zalloc(mcam->bmap_entries, GFP_KERNEL);
if (!mcam->bmap)
return -ENOMEM;
- mcam->bmap_reverse = kmalloc_array(BITS_TO_LONGS(mcam->bmap_entries),
- sizeof(long), GFP_KERNEL);
+ mcam->bmap_reverse = bitmap_zalloc(mcam->bmap_entries, GFP_KERNEL);
if (!mcam->bmap_reverse)
goto free_bmap;
@@ -1918,7 +1916,8 @@ int npc_mcam_rsrcs_init(struct rvu *rvu, int blkaddr)
/* Alloc memory for saving entry to RVU PFFUNC allocation mapping */
mcam->entry2pfvf_map = kmalloc_array(mcam->bmap_entries,
- sizeof(u16), GFP_KERNEL);
+ sizeof(u16),
+ GFP_KERNEL | __GFP_ZERO);
if (!mcam->entry2pfvf_map)
goto free_bmap_reverse;
@@ -1942,7 +1941,8 @@ int npc_mcam_rsrcs_init(struct rvu *rvu, int blkaddr)
goto free_entry_map;
mcam->cntr2pfvf_map = kmalloc_array(mcam->counters.max,
- sizeof(u16), GFP_KERNEL);
+ sizeof(u16),
+ GFP_KERNEL | __GFP_ZERO);
if (!mcam->cntr2pfvf_map)
goto free_cntr_bmap;
@@ -1950,12 +1950,14 @@ int npc_mcam_rsrcs_init(struct rvu *rvu, int blkaddr)
* counter's reference count.
*/
mcam->entry2cntr_map = kmalloc_array(mcam->bmap_entries,
- sizeof(u16), GFP_KERNEL);
+ sizeof(u16),
+ GFP_KERNEL | __GFP_ZERO);
if (!mcam->entry2cntr_map)
goto free_cntr_map;
mcam->cntr_refcnt = kmalloc_array(mcam->counters.max,
- sizeof(u16), GFP_KERNEL);
+ sizeof(u16),
+ GFP_KERNEL | __GFP_ZERO);
if (!mcam->cntr_refcnt)
goto free_entry_cntr_map;
@@ -1988,9 +1990,9 @@ int npc_mcam_rsrcs_init(struct rvu *rvu, int blkaddr)
free_entry_map:
kfree(mcam->entry2pfvf_map);
free_bmap_reverse:
- kfree(mcam->bmap_reverse);
+ bitmap_free(mcam->bmap_reverse);
free_bmap:
- kfree(mcam->bmap);
+ bitmap_free(mcam->bmap);
return -ENOMEM;
}
--
2.25.1
next reply other threads:[~2024-01-31 2:41 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-31 2:41 Ratheesh Kannoth [this message]
2024-01-31 17:30 ` [PATCH net v3] octeontx2-af: Initialize maps Brett Creeley
2024-02-01 9:31 ` Simon Horman
2024-02-01 9:35 ` [EXT] " Ratheesh Kannoth
2024-02-01 16:27 ` Jakub Kicinski
2024-02-02 7:32 ` Ratheesh Kannoth
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