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Message-ID: <20220216194836.GA904035@embeddedor>
Date: Wed, 16 Feb 2022 13:48:36 -0600
From: "Gustavo A. R. Silva" <gustavoars@...nel.org>
To: Kalle Valo <kvalo@...nel.org>,
"David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>
Cc: ath11k@...ts.infradead.org, linux-wireless@...r.kernel.org,
netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
"Gustavo A. R. Silva" <gustavoars@...nel.org>,
linux-hardening@...r.kernel.org
Subject: [PATCH][next] ath11k: Replace zero-length arrays with flexible-array
members
There is a regular need in the kernel to provide a way to declare
having a dynamically sized set of trailing elements in a structure.
Kernel code should always use “flexible array members”[1] for these
cases. The older style of one-element or zero-length arrays should
no longer be used[2].
[1] https://en.wikipedia.org/wiki/Flexible_array_member
[2] https://www.kernel.org/doc/html/v5.16/process/deprecated.html#zero-length-and-one-element-arrays
Link: https://github.com/KSPP/linux/issues/78
Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
---
drivers/net/wireless/ath/ath11k/ce.h | 2 +-
drivers/net/wireless/ath/ath11k/core.h | 2 +-
drivers/net/wireless/ath/ath11k/dp.h | 10 +++++-----
drivers/net/wireless/ath/ath11k/rx_desc.h | 6 +++---
drivers/net/wireless/ath/ath11k/spectral.c | 2 +-
5 files changed, 11 insertions(+), 11 deletions(-)
diff --git a/drivers/net/wireless/ath/ath11k/ce.h b/drivers/net/wireless/ath/ath11k/ce.h
index 8255b6cfab0c..9644ff909502 100644
--- a/drivers/net/wireless/ath/ath11k/ce.h
+++ b/drivers/net/wireless/ath/ath11k/ce.h
@@ -145,7 +145,7 @@ struct ath11k_ce_ring {
u32 hal_ring_id;
/* keep last */
- struct sk_buff *skb[0];
+ struct sk_buff *skb[];
};
struct ath11k_ce_pipe {
diff --git a/drivers/net/wireless/ath/ath11k/core.h b/drivers/net/wireless/ath/ath11k/core.h
index 9e88ccca5ca7..e5cc007b6feb 100644
--- a/drivers/net/wireless/ath/ath11k/core.h
+++ b/drivers/net/wireless/ath/ath11k/core.h
@@ -806,7 +806,7 @@ struct ath11k_base {
} id;
/* must be last */
- u8 drv_priv[0] __aligned(sizeof(void *));
+ u8 drv_priv[] __aligned(sizeof(void *));
};
struct ath11k_fw_stats_pdev {
diff --git a/drivers/net/wireless/ath/ath11k/dp.h b/drivers/net/wireless/ath/ath11k/dp.h
index 409d6cc5a1d5..b644e4675818 100644
--- a/drivers/net/wireless/ath/ath11k/dp.h
+++ b/drivers/net/wireless/ath/ath11k/dp.h
@@ -1170,12 +1170,12 @@ struct ath11k_htt_ppdu_stats_msg {
u32 ppdu_id;
u32 timestamp;
u32 rsvd;
- u8 data[0];
+ u8 data[];
} __packed;
struct htt_tlv {
u32 header;
- u8 value[0];
+ u8 value[];
} __packed;
#define HTT_TLV_TAG GENMASK(11, 0)
@@ -1362,7 +1362,7 @@ struct htt_ppdu_stats_usr_cmn_array {
* tx_ppdu_stats_info is variable length, with length =
* number_of_ppdu_stats * sizeof (struct htt_tx_ppdu_stats_info)
*/
- struct htt_tx_ppdu_stats_info tx_ppdu_info[0];
+ struct htt_tx_ppdu_stats_info tx_ppdu_info[];
} __packed;
struct htt_ppdu_user_stats {
@@ -1424,7 +1424,7 @@ struct htt_ppdu_stats_info {
*/
struct htt_pktlog_msg {
u32 hdr;
- u8 payload[0];
+ u8 payload[];
};
/**
@@ -1645,7 +1645,7 @@ struct ath11k_htt_extd_stats_msg {
u32 info0;
u64 cookie;
u32 info1;
- u8 data[0];
+ u8 data[];
} __packed;
#define HTT_MAC_ADDR_L32_0 GENMASK(7, 0)
diff --git a/drivers/net/wireless/ath/ath11k/rx_desc.h b/drivers/net/wireless/ath/ath11k/rx_desc.h
index 79c50804d7dc..26ecc1bcd9d5 100644
--- a/drivers/net/wireless/ath/ath11k/rx_desc.h
+++ b/drivers/net/wireless/ath/ath11k/rx_desc.h
@@ -1445,7 +1445,7 @@ struct hal_rx_desc_ipq8074 {
__le32 hdr_status_tag;
__le32 phy_ppdu_id;
u8 hdr_status[HAL_RX_DESC_HDR_STATUS_LEN];
- u8 msdu_payload[0];
+ u8 msdu_payload[];
} __packed;
struct hal_rx_desc_qcn9074 {
@@ -1464,7 +1464,7 @@ struct hal_rx_desc_qcn9074 {
__le32 hdr_status_tag;
__le32 phy_ppdu_id;
u8 hdr_status[HAL_RX_DESC_HDR_STATUS_LEN];
- u8 msdu_payload[0];
+ u8 msdu_payload[];
} __packed;
struct hal_rx_desc_wcn6855 {
@@ -1483,7 +1483,7 @@ struct hal_rx_desc_wcn6855 {
__le32 hdr_status_tag;
__le32 phy_ppdu_id;
u8 hdr_status[HAL_RX_DESC_HDR_STATUS_LEN];
- u8 msdu_payload[0];
+ u8 msdu_payload[];
} __packed;
struct hal_rx_desc {
diff --git a/drivers/net/wireless/ath/ath11k/spectral.c b/drivers/net/wireless/ath/ath11k/spectral.c
index 4100cc1449a2..2b18871d5f7c 100644
--- a/drivers/net/wireless/ath/ath11k/spectral.c
+++ b/drivers/net/wireless/ath/ath11k/spectral.c
@@ -107,7 +107,7 @@ struct spectral_search_fft_report {
__le32 info1;
__le32 info2;
__le32 reserve0;
- u8 bins[0];
+ u8 bins[];
} __packed;
struct ath11k_spectral_search_report {
--
2.27.0
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