From: Mateusz Palczewski <mateusz.palczewski@intel.com>
To: intel-wired-lan@osuosl.org
Subject: [Intel-wired-lan] [PATCH net v2] virtchnl: Fix layout of RSS structures
Date: Mon, 25 Jan 2021 16:09:42 +0000 [thread overview]
Message-ID: <20210125160942.20551-1-mateusz.palczewski@intel.com> (raw)
From: Norbert Ciosek <norbertx.ciosek@intel.com>
Remove padding from RSS structures. Previous layout
could lead to unwanted compiler optimizations
in loops when iterating over key and lut arrays.
Fixes: 65ece6de0114 ("virtchnl: Add missing explicit padding to structures")
Signed-off-by: Norbert Ciosek <norbertx.ciosek@intel.com>
---
v2: Removed padding instead of moving "key" and "lut" fields
at the end of RSS structures.
---
include/linux/avf/virtchnl.h | 2 --
1 file changed, 2 deletions(-)
diff --git a/include/linux/avf/virtchnl.h b/include/linux/avf/virtchnl.h
index e49a063..21c5b2d 100644
--- a/include/linux/avf/virtchnl.h
+++ b/include/linux/avf/virtchnl.h
@@ -503,7 +503,6 @@ struct virtchnl_rss_key {
u16 vsi_id;
u16 key_len;
u8 key[1]; /* RSS hash key, packed bytes */
- u8 pad[1];
};
VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_rss_key);
@@ -512,7 +511,6 @@ struct virtchnl_rss_lut {
u16 vsi_id;
u16 lut_entries;
u8 lut[1]; /* RSS lookup table */
- u8 pad[1];
};
VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_rss_lut);
--
2.17.1
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reply other threads:[~2021-01-25 16:09 UTC|newest]
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