Re: net: mlx4: slight optimization of addr compare

From: Amir Vadai
Date: Sun Dec 29 2013 - 08:30:49 EST


On 27/12/13 14:48 +0800, Ding Tianhong wrote:
> Use possibly more efficient ether_addr_equal
> to instead of memcmp.
>
> Cc: Amir Vadai <amirv@xxxxxxxxxxxx>
> Signed-off-by: Ding Tianhong <dingtianhong@xxxxxxxxxx>
> ---
> drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 4 ++--
> drivers/net/ethernet/mellanox/mlx4/resource_tracker.c | 2 +-
> 2 files changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
> index 6f92090..7e43858 100644
> --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
> +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
> @@ -782,7 +782,7 @@ static void update_mclist_flags(struct mlx4_en_priv *priv,
> list_for_each_entry(dst_tmp, dst, list) {
> found = false;
> list_for_each_entry(src_tmp, src, list) {
> - if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
> + if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
> found = true;
> break;
> }
> @@ -797,7 +797,7 @@ static void update_mclist_flags(struct mlx4_en_priv *priv,
> list_for_each_entry(src_tmp, src, list) {
> found = false;
> list_for_each_entry(dst_tmp, dst, list) {
> - if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
> + if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
> dst_tmp->action = MCLIST_NONE;
> found = true;
> break;
> diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
> index 2f3f2bc..2e3232c 100644
> --- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
> +++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
> @@ -3634,7 +3634,7 @@ static int validate_eth_header_mac(int slave, struct _rule_hw *eth_header,
> !is_broadcast_ether_addr(eth_header->eth.dst_mac)) {
> list_for_each_entry_safe(res, tmp, rlist, list) {
> be_mac = cpu_to_be64(res->mac << 16);
> - if (!memcmp(&be_mac, eth_header->eth.dst_mac, ETH_ALEN))
> + if (ether_addr_equal((u8 *)&be_mac, eth_header->eth.dst_mac))
> return 0;
> }
> pr_err("MAC %pM doesn't belong to VF %d, Steering rule rejected\n",
> --
> 1.8.0
>
>
> --
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Acked-By: Amir Vadai <amirv@xxxxxxxxxxxx>
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