From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Nathan Huckleberry <nhuck@google.com>,
llvm@lists.linux.dev, Dan Carpenter <error27@gmail.com>,
Nathan Chancellor <nathan@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Sasha Levin <sashal@kernel.org>,
ndesaulniers@google.com, ztong0001@gmail.com, dave@stgolabs.net,
linux-staging@lists.linux.dev
Subject: [PATCH AUTOSEL 4.14 11/13] staging: rtl8192u: Fix return type of ieee80211_xmit
Date: Wed, 12 Oct 2022 20:27:10 -0400 [thread overview]
Message-ID: <20221013002716.1895839-11-sashal@kernel.org> (raw)
In-Reply-To: <20221013002716.1895839-1-sashal@kernel.org>
From: Nathan Huckleberry <nhuck@google.com>
[ Upstream commit 2851349ac351010a2649e0ff86a1e3d68fe5d683 ]
The ndo_start_xmit field in net_device_ops is expected to be of type
netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, struct net_device *dev).
The mismatched return type breaks forward edge kCFI since the underlying
function definition does not match the function hook definition.
The return type of ieee80211_xmit should be changed from int to
netdev_tx_t.
Link: https://github.com/ClangBuiltLinux/linux/issues/1703
Cc: llvm@lists.linux.dev
Reported-by: Dan Carpenter <error27@gmail.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Nathan Huckleberry <nhuck@google.com>
Link: https://lore.kernel.org/r/20220914210750.423048-1-nhuck@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/staging/rtl8192u/ieee80211/ieee80211.h | 2 +-
drivers/staging/rtl8192u/ieee80211/ieee80211_tx.c | 6 +++---
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211.h b/drivers/staging/rtl8192u/ieee80211/ieee80211.h
index b062cad052b9..2e768e21e26b 100644
--- a/drivers/staging/rtl8192u/ieee80211/ieee80211.h
+++ b/drivers/staging/rtl8192u/ieee80211/ieee80211.h
@@ -2186,7 +2186,7 @@ int ieee80211_set_encryption(struct ieee80211_device *ieee);
int ieee80211_encrypt_fragment(struct ieee80211_device *ieee,
struct sk_buff *frag, int hdr_len);
-int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev);
+netdev_tx_t ieee80211_xmit(struct sk_buff *skb, struct net_device *dev);
void ieee80211_txb_free(struct ieee80211_txb *txb);
diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_tx.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_tx.c
index f58971a4a2e3..70cc158d79bc 100644
--- a/drivers/staging/rtl8192u/ieee80211/ieee80211_tx.c
+++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_tx.c
@@ -594,7 +594,7 @@ static void ieee80211_query_seqnum(struct ieee80211_device *ieee,
}
}
-int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
+netdev_tx_t ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct ieee80211_device *ieee = netdev_priv(dev);
struct ieee80211_txb *txb = NULL;
@@ -902,13 +902,13 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
if ((*ieee->hard_start_xmit)(txb, dev) == 0) {
stats->tx_packets++;
stats->tx_bytes += __le16_to_cpu(txb->payload_size);
- return 0;
+ return NETDEV_TX_OK;
}
ieee80211_txb_free(txb);
}
}
- return 0;
+ return NETDEV_TX_OK;
failed:
spin_unlock_irqrestore(&ieee->lock, flags);
--
2.35.1
next parent reply other threads:[~2022-10-13 0:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20221013002716.1895839-1-sashal@kernel.org>
2022-10-13 0:27 ` Sasha Levin [this message]
2022-10-13 5:54 ` [PATCH AUTOSEL 4.14 11/13] staging: rtl8192u: Fix return type of ieee80211_xmit Greg Kroah-Hartman
2022-10-13 0:27 ` [PATCH AUTOSEL 4.14 12/13] staging: octeon: Fix return type of cvm_oct_xmit and cvm_oct_xmit_pow Sasha Levin
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