Messages in this thread | | | Date | Tue, 11 Sep 2018 16:59:25 +0800 | From | zhong jiang <> | Subject | Re: [PATCH] net: ipv4: Use BUG_ON directly instead of a if condition followed by BUG |
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On 2018/9/11 16:51, Sergei Shtylyov wrote: > On 9/10/2018 5:38 PM, zhong jiang wrote: > >> The if condition can be removed if we use BUG_ON directly. >> The issule is detected with the help of Coccinelle. > > Issue? > >> >> Signed-off-by: zhong jiang <zhongjiang@huawei.com> >> --- >> net/ipv4/tcp_input.c | 8 ++++---- >> 1 file changed, 4 insertions(+), 4 deletions(-) >> >> diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c >> index 62508a2..893bde3 100644 >> --- a/net/ipv4/tcp_input.c >> +++ b/net/ipv4/tcp_input.c >> @@ -4934,8 +4934,8 @@ void tcp_rbtree_insert(struct rb_root *root, struct sk_buff *skb) >> BUG_ON(offset < 0); >> if (size > 0) { >> size = min(copy, size); >> - if (skb_copy_bits(skb, offset, skb_put(nskb, size), size)) >> - BUG(); >> + BUG(skb_copy_bits(skb, offset, > > You said BUG_ON()? Yep. Do you think that it is worthing to do
Thanks, zhong jiang > >> + skb_put(nskb, size), size)); >> TCP_SKB_CB(nskb)->end_seq += size; >> copy -= size; >> start += size; >> @@ -5327,8 +5327,8 @@ static void tcp_urg(struct sock *sk, struct sk_buff *skb, const struct tcphdr *t >> /* Is the urgent pointer pointing into this packet? */ >> if (ptr < skb->len) { >> u8 tmp; >> - if (skb_copy_bits(skb, ptr, &tmp, 1)) >> - BUG(); >> + >> + BUG(skb_copy_bits(skb, ptr, &tmp, 1)); > > Likewise. > > [...] > > MBR, Sergei > > . >
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