diff mbox

[net-next] net: minor: tcp: use tcp_skb_mss helper in tcp_tso_segment

Message ID 1370563643-19556-1-git-send-email-dborkman@redhat.com
State Superseded, archived
Delegated to: David Miller
Headers show

Commit Message

Daniel Borkmann June 7, 2013, 12:07 a.m. UTC
We have the minimal inline helper tcp_skb_mss to access
skb_shinfo(skb)->gso_size, so also use it here to get mss.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
---
 net/ipv4/tcp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Eric Dumazet June 7, 2013, 1:20 a.m. UTC | #1
On Fri, 2013-06-07 at 02:07 +0200, Daniel Borkmann wrote:
> We have the minimal inline helper tcp_skb_mss to access
> skb_shinfo(skb)->gso_size, so also use it here to get mss.
> 
> Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
> ---
>  net/ipv4/tcp.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
> index b5d4ad9..6a1cf95 100644
> --- a/net/ipv4/tcp.c
> +++ b/net/ipv4/tcp.c
> @@ -2905,7 +2905,7 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb,
>  	oldlen = (u16)~skb->len;
>  	__skb_pull(skb, thlen);
>  
> -	mss = skb_shinfo(skb)->gso_size;
> +	mss = tcp_skb_mss(skb);

Conceptually, this is part of the GRO/GSO layer.

It would be nice to move this stuff in net/ipv4/tcp_offload.c
to makes things explicit.



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Daniel Borkmann June 7, 2013, 5:43 a.m. UTC | #2
On 06/07/2013 03:20 AM, Eric Dumazet wrote:
> On Fri, 2013-06-07 at 02:07 +0200, Daniel Borkmann wrote:
>> We have the minimal inline helper tcp_skb_mss to access
>> skb_shinfo(skb)->gso_size, so also use it here to get mss.
>>
>> Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
>> ---
>>   net/ipv4/tcp.c | 4 ++--
>>   1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
>> index b5d4ad9..6a1cf95 100644
>> --- a/net/ipv4/tcp.c
>> +++ b/net/ipv4/tcp.c
>> @@ -2905,7 +2905,7 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb,
>>   	oldlen = (u16)~skb->len;
>>   	__skb_pull(skb, thlen);
>>
>> -	mss = skb_shinfo(skb)->gso_size;
>> +	mss = tcp_skb_mss(skb);
>
> Conceptually, this is part of the GRO/GSO layer.
>
> It would be nice to move this stuff in net/ipv4/tcp_offload.c
> to makes things explicit.

Agreed, will do.
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diff mbox

Patch

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index b5d4ad9..6a1cf95 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2905,7 +2905,7 @@  struct sk_buff *tcp_tso_segment(struct sk_buff *skb,
 	oldlen = (u16)~skb->len;
 	__skb_pull(skb, thlen);
 
-	mss = skb_shinfo(skb)->gso_size;
+	mss = tcp_skb_mss(skb);
 	if (unlikely(skb->len <= mss))
 		goto out;
 
@@ -3071,7 +3071,7 @@  found:
 		flush |= *(u32 *)((u8 *)th + i) ^
 			 *(u32 *)((u8 *)th2 + i);
 
-	mss = skb_shinfo(p)->gso_size;
+	mss = tcp_skb_mss(p);
 
 	flush |= (len - 1) >= mss;
 	flush |= (ntohl(th2->seq) + skb_gro_len(p)) ^ ntohl(th->seq);