This patch replaces bit shifting on 1 with the BIT(x) macro.
This was done with coccinelle:
@@
constant c;
@@
-1 << c
+BIT(c)
Signed-off-by: Arushi Singhal <[email protected]>
---
drivers/staging/octeon/ethernet-tx.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/octeon/ethernet-tx.c b/drivers/staging/octeon/ethernet-tx.c
index ff4119e8de42..f00186ac4e27 100644
--- a/drivers/staging/octeon/ethernet-tx.c
+++ b/drivers/staging/octeon/ethernet-tx.c
@@ -381,7 +381,7 @@ int cvm_oct_xmit(struct sk_buff *skb, struct net_device *dev)
(ip_hdr(skb)->version == 4) &&
(ip_hdr(skb)->ihl == 5) &&
((ip_hdr(skb)->frag_off == 0) ||
- (ip_hdr(skb)->frag_off == htons(1 << 14))) &&
+ (ip_hdr(skb)->frag_off == htons(BIT(14)))) &&
((ip_hdr(skb)->protocol == IPPROTO_TCP) ||
(ip_hdr(skb)->protocol == IPPROTO_UDP))) {
/* Use hardware checksum calc */
@@ -613,7 +613,7 @@ int cvm_oct_xmit_pow(struct sk_buff *skb, struct net_device *dev)
#endif
work->word2.s.is_frag = !((ip_hdr(skb)->frag_off == 0) ||
(ip_hdr(skb)->frag_off ==
- 1 << 14));
+ BIT(14)));
#if 0
/* Assume Linux is sending a good packet */
work->word2.s.IP_exc = 0;
--
2.11.0
On Wed, 22 Mar 2017, Arushi Singhal wrote:
> This patch replaces bit shifting on 1 with the BIT(x) macro.
> This was done with coccinelle:
> @@
> constant c;
> @@
>
> -1 << c
> +BIT(c)
>
> Signed-off-by: Arushi Singhal <[email protected]>
> ---
> drivers/staging/octeon/ethernet-tx.c | 4 ++--
What is the connection to media? You also seem to have picked up the
Lustre maintainers, who are not relevant.
julia
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/staging/octeon/ethernet-tx.c b/drivers/staging/octeon/ethernet-tx.c
> index ff4119e8de42..f00186ac4e27 100644
> --- a/drivers/staging/octeon/ethernet-tx.c
> +++ b/drivers/staging/octeon/ethernet-tx.c
> @@ -381,7 +381,7 @@ int cvm_oct_xmit(struct sk_buff *skb, struct net_device *dev)
> (ip_hdr(skb)->version == 4) &&
> (ip_hdr(skb)->ihl == 5) &&
> ((ip_hdr(skb)->frag_off == 0) ||
> - (ip_hdr(skb)->frag_off == htons(1 << 14))) &&
> + (ip_hdr(skb)->frag_off == htons(BIT(14)))) &&
> ((ip_hdr(skb)->protocol == IPPROTO_TCP) ||
> (ip_hdr(skb)->protocol == IPPROTO_UDP))) {
> /* Use hardware checksum calc */
> @@ -613,7 +613,7 @@ int cvm_oct_xmit_pow(struct sk_buff *skb, struct net_device *dev)
> #endif
> work->word2.s.is_frag = !((ip_hdr(skb)->frag_off == 0) ||
> (ip_hdr(skb)->frag_off ==
> - 1 << 14));
> + BIT(14)));
> #if 0
> /* Assume Linux is sending a good packet */
> work->word2.s.IP_exc = 0;
> --
> 2.11.0
>
> --
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On Mar 22, 2017, at 00:20, Arushi Singhal <[email protected]> wrote:
>
> This patch replaces bit shifting on 1 with the BIT(x) macro.
> This was done with coccinelle:
> @@
> constant c;
> @@
>
> -1 << c
> +BIT(c)
Hi Arushi,
thanks for taking time to contribute to the kernel. There are a few problems with
this patch.
Firstly, I'm not sure why you sent this patch to lustre-devel, Oleg, James, and me,
since it has nothing to do with Lustre. Conversely, the actual maintainer(s) of this
code would normally be better suited to review the patch. This isn't totally clear
in this case since get_maintainer.pl lists another person submitting minor cleanups,
but "git log" does return some more likely candidates:
- David Daney <[email protected]> (original author)
- Luuk Paulussen <[email protected]> (recent non-trivial patcher)
- Kyeong Yoo <[email protected]> (recent non-trivial reviewer)
- Richard Laing <[email protected]> " "
- Chris Packham <[email protected]>
- Tim Beale <[email protected]>
- Hamish Martin <[email protected]>
Secondly, as mentioned with the other patch you submitted, you need to stop and look
at whether your changes actually make sense. In this case, I don't think they do
make sense, and this patch should probably just be abandoned.
> Signed-off-by: Arushi Singhal <[email protected]>
> ---
> drivers/staging/octeon/ethernet-tx.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/staging/octeon/ethernet-tx.c b/drivers/staging/octeon/ethernet-tx.c
> index ff4119e8de42..f00186ac4e27 100644
> --- a/drivers/staging/octeon/ethernet-tx.c
> +++ b/drivers/staging/octeon/ethernet-tx.c
> @@ -381,7 +381,7 @@ int cvm_oct_xmit(struct sk_buff *skb, struct net_device *dev)
> (ip_hdr(skb)->version == 4) &&
> (ip_hdr(skb)->ihl == 5) &&
> ((ip_hdr(skb)->frag_off == 0) ||
> - (ip_hdr(skb)->frag_off == htons(1 << 14))) &&
> + (ip_hdr(skb)->frag_off == htons(BIT(14)))) &&
In this case, it is checking if the fragment offset in bytes is 16384, rather than doing
a bit comparison, so I don't think the use of BIT() is appropriate here.
> ((ip_hdr(skb)->protocol == IPPROTO_TCP) ||
> (ip_hdr(skb)->protocol == IPPROTO_UDP))) {
> /* Use hardware checksum calc */
> @@ -613,7 +613,7 @@ int cvm_oct_xmit_pow(struct sk_buff *skb, struct net_device *dev)
> #endif
> work->word2.s.is_frag = !((ip_hdr(skb)->frag_off == 0) ||
> (ip_hdr(skb)->frag_off ==
> - 1 << 14));
> + BIT(14)));
Same.
Cheers, Andreas
--
Andreas Dilger
Lustre Principal Architect
Intel Corporation