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tls: rx: device: fix checking decryption status

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[ Upstream commit b3a03b540e ]

skb->len covers the entire skb, including the frag_list.
In fact we're guaranteed that rxm->full_len <= skb->len,
so since the change under Fixes we were not checking decrypt
status of any skb but the first.

Note that the skb_pagelen() added here may feel a bit costly,
but it's removed by subsequent fixes, anyway.

Reported-by: Tariq Toukan <tariqt@nvidia.com>
Fixes: 86b259f6f8 ("tls: rx: device: bound the frag walk")
Tested-by: Shai Amiram <samiram@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jakub Kicinski
2023-05-16 18:50:36 -07:00
committed by Greg Kroah-Hartman
parent b3e54fb3a3
commit e734a693a2
1 changed files with 1 additions and 1 deletions
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2
net/tls/tls_device.c
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@@ -1012,7 +1012,7 @@ int tls_device_decrypted(struct sock *sk, struct tls_context *tls_ctx)
struct sk_buff *skb_iter;
int left;
left = rxm->full_len - skb->len;
left = rxm->full_len + rxm->offset - skb_pagelen(skb);
/* Check if all the data is decrypted already */
skb_iter = skb_shinfo(skb)->frag_list;
while (skb_iter && left > 0) {