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atheros: fix return value check in atl1_tso()

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[ Upstream commit ed96824b71ed67664390890441b229423a25317f ]

in atl1_tso(), it should check the return value of pskb_trim(),
and return an error code if an unexpected value is returned
by pskb_trim().

Fixes: 401c0aabec ("atl1: simplify tx packet descriptor")
Signed-off-by: Yuanjun Gong <ruc_gongyuanjun@163.com>
Link: https://lore.kernel.org/r/20230722142511.12448-1-ruc_gongyuanjun@163.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yuanjun Gong 2023-07-22 22:25:11 +08:00 committed by Greg Kroah-Hartman
parent 01cb355bb9
commit 85c38ac62c
1 changed files with 5 additions and 2 deletions
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7
drivers/net/ethernet/atheros/atlx/atl1.c
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@ -2113,8 +2113,11 @@ static int atl1_tso(struct atl1_adapter *adapter, struct sk_buff *skb,
real_len = (((unsigned char *)iph - skb->data) +
ntohs(iph->tot_len));
if (real_len < skb->len)
pskb_trim(skb, real_len);
if (real_len < skb->len) {
err = pskb_trim(skb, real_len);
if (err)
return err;
}
hdr_len = skb_tcp_all_headers(skb);
if (skb->len == hdr_len) {
iph->check = 0;