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authorPaul Burton <paul.burton@mips.com>2018-06-23 05:17:52 +0200
committerDavid S. Miller <davem@davemloft.net>2018-06-23 13:52:09 +0200
commit6ab91e47694e03775bbe874fa8f15f84db404c00 (patch)
treeb3f6b5de516c8eff7795ab10b2e79fc7167711f4 /drivers/net/ethernet/oki-semi
parentnet: pch_gbe: Use module_pci_driver() (diff)
downloadlinux-6ab91e47694e03775bbe874fa8f15f84db404c00.tar.xz
linux-6ab91e47694e03775bbe874fa8f15f84db404c00.zip
net: pch_gbe: Inline pch_gbe_mac_mc_addr_list_update
The pch_gbe driver sets up multicast address filters using a convoluted mechanism by which pch_gbe_set_multi allocates an array to hold multicast addresses, copies desired addresses into that array, calls a pch_gbe_mac_mc_addr_list_update function which copies addresses out of that array into MAC registers, then frees the array. This patch simplifies this somewhat by inlining pch_gbe_mac_mc_addr_list_update into pch_gbe_set_multi, and removing the requirement for the MAC addresses to stored consecutively in a single array. Signed-off-by: Paul Burton <paul.burton@mips.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/oki-semi')
-rw-r--r--drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c73
1 files changed, 19 insertions, 54 deletions
diff --git a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
index 3f2dd36d45ad..dc8c4050fad3 100644
--- a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
+++ b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
@@ -411,44 +411,6 @@ static void pch_gbe_mac_init_rx_addrs(struct pch_gbe_hw *hw, u16 mar_count)
pch_gbe_wait_clr_bit(&hw->reg->ADDR_MASK, PCH_GBE_BUSY);
}
-
-/**
- * pch_gbe_mac_mc_addr_list_update - Update Multicast addresses
- * @hw: Pointer to the HW structure
- * @mc_addr_list: Array of multicast addresses to program
- * @mc_addr_count: Number of multicast addresses to program
- * @mar_used_count: The first MAC Address register free to program
- * @mar_total_num: Total number of supported MAC Address Registers
- */
-static void pch_gbe_mac_mc_addr_list_update(struct pch_gbe_hw *hw,
- u8 *mc_addr_list, u32 mc_addr_count,
- u32 mar_used_count, u32 mar_total_num)
-{
- u32 i, adrmask;
-
- /* Load the first set of multicast addresses into the exact
- * filters (RAR). If there are not enough to fill the RAR
- * array, clear the filters.
- */
- for (i = mar_used_count; i < mar_total_num; i++) {
- if (mc_addr_count) {
- pch_gbe_mac_mar_set(hw, mc_addr_list, i);
- mc_addr_count--;
- mc_addr_list += ETH_ALEN;
- } else {
- /* Clear MAC address mask */
- adrmask = ioread32(&hw->reg->ADDR_MASK);
- iowrite32((adrmask | (0x0001 << i)),
- &hw->reg->ADDR_MASK);
- /* wait busy */
- pch_gbe_wait_clr_bit(&hw->reg->ADDR_MASK, PCH_GBE_BUSY);
- /* Clear MAC address */
- iowrite32(0, &hw->reg->mac_adr[i].high);
- iowrite32(0, &hw->reg->mac_adr[i].low);
- }
- }
-}
-
/**
* pch_gbe_mac_force_mac_fc - Force the MAC's flow control settings
* @hw: Pointer to the HW structure
@@ -2143,10 +2105,8 @@ static void pch_gbe_set_multi(struct net_device *netdev)
struct pch_gbe_adapter *adapter = netdev_priv(netdev);
struct pch_gbe_hw *hw = &adapter->hw;
struct netdev_hw_addr *ha;
- u8 *mta_list;
- u32 rctl;
- int i;
- int mc_count;
+ u32 rctl, adrmask;
+ int mc_count, i;
netdev_dbg(netdev, "netdev->flags : 0x%08x\n", netdev->flags);
@@ -2173,20 +2133,25 @@ static void pch_gbe_set_multi(struct net_device *netdev)
if (mc_count >= PCH_GBE_MAR_ENTRIES)
return;
- mta_list = kmalloc_array(ETH_ALEN, mc_count, GFP_ATOMIC);
- if (!mta_list)
- return;
- /* The shared function expects a packed array of only addresses. */
- i = 0;
- netdev_for_each_mc_addr(ha, netdev) {
- if (i == mc_count)
- break;
- memcpy(mta_list + (i++ * ETH_ALEN), &ha->addr, ETH_ALEN);
+ /* Load the first set of multicast addresses into MAC address registers
+ * for use by hardware filtering.
+ */
+ i = 1;
+ netdev_for_each_mc_addr(ha, netdev)
+ pch_gbe_mac_mar_set(hw, ha->addr, i++);
+
+ /* If there are spare MAC registers, mask & clear them */
+ for (; i < PCH_GBE_MAR_ENTRIES; i++) {
+ /* Clear MAC address mask */
+ adrmask = ioread32(&hw->reg->ADDR_MASK);
+ iowrite32(adrmask | BIT(i), &hw->reg->ADDR_MASK);
+ /* wait busy */
+ pch_gbe_wait_clr_bit(&hw->reg->ADDR_MASK, PCH_GBE_BUSY);
+ /* Clear MAC address */
+ iowrite32(0, &hw->reg->mac_adr[i].high);
+ iowrite32(0, &hw->reg->mac_adr[i].low);
}
- pch_gbe_mac_mc_addr_list_update(hw, mta_list, i, 1,
- PCH_GBE_MAR_ENTRIES);
- kfree(mta_list);
netdev_dbg(netdev,
"RX_MODE reg(check bit31,30 ADD,MLT) : 0x%08x netdev->mc_count : 0x%08x\n",