diff mbox series

[V2,net] net: hns: Fix the process of adding broadcast addresses to tcam

Message ID 20180604165009.24476-1-salil.mehta@huawei.com
State Accepted, archived
Delegated to: David Miller
Headers show
Series [V2,net] net: hns: Fix the process of adding broadcast addresses to tcam | expand

Commit Message

Salil Mehta June 4, 2018, 4:50 p.m. UTC 
From: Xi Wang <wangxi11@huawei.com>

If the multicast mask value in device tree is configured not all
0xff, the broadcast mac will be lost from tcam table after the
execution of command 'ifconfig up'. The address is appended by
hns_ae_start, but will be clear later by hns_nic_set_rx_mode
called in dev_open process.

This patch fixed it by not use the multicast mask when add a
broadcast address.

Fixes: b5996f11ea54 ("net: add Hisilicon Network Subsystem basic ethernet support")
Signed-off-by: Xi Wang <wangxi11@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
Patch V2: Fixed comments by David Miller
   Link: https://lkml.org/lkml/2018/6/4/671
Patch V1: Initial Submit
---
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c | 23 +++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

Comments

David Miller June 4, 2018, 9:33 p.m. UTC | #1 
From: Salil Mehta <salil.mehta@huawei.com>
Date: Mon, 4 Jun 2018 17:50:09 +0100

> From: Xi Wang <wangxi11@huawei.com>
> 
> If the multicast mask value in device tree is configured not all
> 0xff, the broadcast mac will be lost from tcam table after the
> execution of command 'ifconfig up'. The address is appended by
> hns_ae_start, but will be clear later by hns_nic_set_rx_mode
> called in dev_open process.
> 
> This patch fixed it by not use the multicast mask when add a
> broadcast address.
> 
> Fixes: b5996f11ea54 ("net: add Hisilicon Network Subsystem basic ethernet support")
> Signed-off-by: Xi Wang <wangxi11@huawei.com>
> Signed-off-by: Peng Li <lipeng321@huawei.com>
> Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
> ---
> Patch V2: Fixed comments by David Miller
>    Link: https://lkml.org/lkml/2018/6/4/671
> Patch V1: Initial Submit

Applied and queued up for -stable, thank you.
diff mbox series

Patch

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
index e0bc79e..85e1d14 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
@@ -1648,6 +1648,15 @@  int hns_dsaf_rm_mac_addr(
 				      mac_entry->addr);
 }
 
+static void hns_dsaf_setup_mc_mask(struct dsaf_device *dsaf_dev,
+				   u8 port_num, u8 *mask, u8 *addr)
+{
+	if (MAC_IS_BROADCAST(addr))
+		memset(mask, 0xff, ETH_ALEN);
+	else
+		memcpy(mask, dsaf_dev->mac_cb[port_num]->mc_mask, ETH_ALEN);
+}
+
 static void hns_dsaf_mc_mask_bit_clear(char *dst, const char *src)
 {
 	u16 *a = (u16 *)dst;
@@ -1676,7 +1685,6 @@  int hns_dsaf_add_mac_mc_port(struct dsaf_device *dsaf_dev,
 	struct dsaf_drv_tbl_tcam_key tmp_mac_key;
 	struct dsaf_tbl_tcam_data tcam_data;
 	u8 mc_addr[ETH_ALEN];
-	u8 *mc_mask;
 	int mskid;
 
 	/*chechk mac addr */
@@ -1687,9 +1695,12 @@  int hns_dsaf_add_mac_mc_port(struct dsaf_device *dsaf_dev,
 	}
 
 	ether_addr_copy(mc_addr, mac_entry->addr);
-	mc_mask = dsaf_dev->mac_cb[mac_entry->in_port_num]->mc_mask;
 	if (!AE_IS_VER1(dsaf_dev->dsaf_ver)) {
+		u8 mc_mask[ETH_ALEN];
+
 		/* prepare for key data setting */
+		hns_dsaf_setup_mc_mask(dsaf_dev, mac_entry->in_port_num,
+				       mc_mask, mac_entry->addr);
 		hns_dsaf_mc_mask_bit_clear(mc_addr, mc_mask);
 
 		/* config key mask */
@@ -1844,7 +1855,6 @@  int hns_dsaf_del_mac_mc_port(struct dsaf_device *dsaf_dev,
 	struct dsaf_drv_tbl_tcam_key mask_key, tmp_mac_key;
 	struct dsaf_tbl_tcam_data *pmask_key = NULL;
 	u8 mc_addr[ETH_ALEN];
-	u8 *mc_mask;
 
 	if (!(void *)mac_entry) {
 		dev_err(dsaf_dev->dev,
@@ -1861,14 +1871,17 @@  int hns_dsaf_del_mac_mc_port(struct dsaf_device *dsaf_dev,
 
 	/* always mask vlan_id field */
 	ether_addr_copy(mc_addr, mac_entry->addr);
-	mc_mask = dsaf_dev->mac_cb[mac_entry->in_port_num]->mc_mask;
 
 	if (!AE_IS_VER1(dsaf_dev->dsaf_ver)) {
+		u8 mc_mask[ETH_ALEN];
+
 		/* prepare for key data setting */
+		hns_dsaf_setup_mc_mask(dsaf_dev, mac_entry->in_port_num,
+				       mc_mask, mac_entry->addr);
 		hns_dsaf_mc_mask_bit_clear(mc_addr, mc_mask);
 
 		/* config key mask */
-		hns_dsaf_set_mac_key(dsaf_dev, &mask_key, 0x00, 0xff, mc_addr);
+		hns_dsaf_set_mac_key(dsaf_dev, &mask_key, 0x00, 0xff, mc_mask);
 
 		mask_key.high.val = le32_to_cpu(mask_key.high.val);
 		mask_key.low.val = le32_to_cpu(mask_key.low.val);