From 74118f7af092a4edc194573a8749f3843d280d3f Mon Sep 17 00:00:00 2001 From: Zhenning Xiao Date: Thu, 9 Aug 2018 06:29:48 -0700 Subject: [PATCH] ice: Code optimization for ice_fill_sw_rule() Use the buffer in the s_rule structure directly instead of using a local array eth_hdr[DUMMY_ETH_HDR_LEN] Signed-off-by: Zhenning Xiao Signed-off-by: Anirudh Venkataramanan Tested-by: Tony Brelinski Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ice/ice_switch.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) diff --git a/drivers/net/ethernet/intel/ice/ice_switch.c b/drivers/net/ethernet/intel/ice/ice_switch.c index 6b7ec2a..d8b18ca 100644 --- a/drivers/net/ethernet/intel/ice/ice_switch.c +++ b/drivers/net/ethernet/intel/ice/ice_switch.c @@ -464,8 +464,9 @@ ice_fill_sw_rule(struct ice_hw *hw, struct ice_fltr_info *f_info, struct ice_aqc_sw_rules_elem *s_rule, enum ice_adminq_opc opc) { u16 vlan_id = ICE_MAX_VLAN_ID + 1; - u8 eth_hdr[DUMMY_ETH_HDR_LEN]; void *daddr = NULL; + u16 eth_hdr_sz; + u8 *eth_hdr; u32 act = 0; __be16 *off; @@ -477,8 +478,11 @@ ice_fill_sw_rule(struct ice_hw *hw, struct ice_fltr_info *f_info, return; } + eth_hdr_sz = sizeof(dummy_eth_header); + eth_hdr = s_rule->pdata.lkup_tx_rx.hdr; + /* initialize the ether header with a dummy header */ - memcpy(eth_hdr, dummy_eth_header, sizeof(dummy_eth_header)); + memcpy(eth_hdr, dummy_eth_header, eth_hdr_sz); ice_fill_sw_info(hw, f_info); switch (f_info->fltr_act) { @@ -536,7 +540,7 @@ ice_fill_sw_rule(struct ice_hw *hw, struct ice_fltr_info *f_info, daddr = f_info->l_data.ethertype_mac.mac_addr; /* fall-through */ case ICE_SW_LKUP_ETHERTYPE: - off = (__be16 *)ð_hdr[ICE_ETH_ETHTYPE_OFFSET]; + off = (__be16 *)(eth_hdr + ICE_ETH_ETHTYPE_OFFSET); *off = cpu_to_be16(f_info->l_data.ethertype_mac.ethertype); break; case ICE_SW_LKUP_MAC_VLAN: @@ -563,18 +567,16 @@ ice_fill_sw_rule(struct ice_hw *hw, struct ice_fltr_info *f_info, s_rule->pdata.lkup_tx_rx.act = cpu_to_le32(act); if (daddr) - ether_addr_copy(ð_hdr[ICE_ETH_DA_OFFSET], daddr); + ether_addr_copy(eth_hdr + ICE_ETH_DA_OFFSET, daddr); if (!(vlan_id > ICE_MAX_VLAN_ID)) { - off = (__be16 *)ð_hdr[ICE_ETH_VLAN_TCI_OFFSET]; + off = (__be16 *)(eth_hdr + ICE_ETH_VLAN_TCI_OFFSET); *off = cpu_to_be16(vlan_id); } /* Create the switch rule with the final dummy Ethernet header */ if (opc != ice_aqc_opc_update_sw_rules) - s_rule->pdata.lkup_tx_rx.hdr_len = cpu_to_le16(sizeof(eth_hdr)); - - memcpy(s_rule->pdata.lkup_tx_rx.hdr, eth_hdr, sizeof(eth_hdr)); + s_rule->pdata.lkup_tx_rx.hdr_len = cpu_to_le16(eth_hdr_sz); } /** -- 2.7.4