[PATCH] cxgb4: make the array match_all_mac static, makes object smaller

[PATCH] cxgb4: make the array match_all_mac static, makes object smaller

[Colin King]

From: Colin Ian King <colin.king@canonical.com>

Don't populate the array match_all_mac on the stack but instead it
static const. Makes the object code smaller by 75 bytes.

Before:
   text    data     bss     dec     hex filename
  46701    8960      64   55725    d9ad ../chelsio/cxgb4/cxgb4_filter.o

After:
   text    data     bss     dec     hex filename
  46338    9120     192   55650    d962 ../chelsio/cxgb4/cxgb4_filter.o

(gcc version 10.2.0)

Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c
index 6260b3bebd2b..786ceae34488 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c
@@ -1441,7 +1441,7 @@ static int cxgb4_set_hash_filter(struct net_device *dev,
 	} else if (iconf & USE_ENC_IDX_F) {
 		if (f->fs.val.encap_vld) {
 			struct port_info *pi = netdev_priv(f->dev);
-			u8 match_all_mac[] = { 0, 0, 0, 0, 0, 0 };
+			static const u8 match_all_mac[] = { 0, 0, 0, 0, 0, 0 };
 
 			/* allocate MPS TCAM entry */
 			ret = t4_alloc_encap_mac_filt(adapter, pi->viid,
@@ -1688,7 +1688,7 @@ int __cxgb4_set_filter(struct net_device *dev, int ftid,
 	} else if (iconf & USE_ENC_IDX_F) {
 		if (f->fs.val.encap_vld) {
 			struct port_info *pi = netdev_priv(f->dev);
-			u8 match_all_mac[] = { 0, 0, 0, 0, 0, 0 };
+			static const u8 match_all_mac[] = { 0, 0, 0, 0, 0, 0 };
 
 			/* allocate MPS TCAM entry */
 			ret = t4_alloc_encap_mac_filt(adapter, pi->viid,
-- 
2.31.1

Re: [PATCH] cxgb4: make the array match_all_mac static, makes object smaller

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net-next.git (refs/heads/master):

On Sun,  1 Aug 2021 16:12:05 +0100 you wrote:
> From: Colin Ian King <colin.king@canonical.com>
> 
> Don't populate the array match_all_mac on the stack but instead it
> static const. Makes the object code smaller by 75 bytes.
> 
> Before:
>    text    data     bss     dec     hex filename
>   46701    8960      64   55725    d9ad ../chelsio/cxgb4/cxgb4_filter.o
> 
> [...]

Here is the summary with links:
  - cxgb4: make the array match_all_mac static, makes object smaller
    https://git.kernel.org/netdev/net-next/c/e688bdb7099c

You are awesome, thank you!
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