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net: hns: fix for promisc mode in HNS driver

Browse source 
If set promisc mode when there is some traffic, The service nic will
cause system halted. We reserve the last 6 tcam entry for the 6 ports.
If promisc mode is enabled, we can config the relative tcam as fuzzy
matching and set to be valid, or set the tcam to be invalid

Signed-off-by: Kejian Yan <yankejian@huawei.com>
Reviewed-by: Yisen Zhuang <yisen.zhuang@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kejian Yan 2016-11-09 18:13:47 +00:00 committed by David S. Miller
parent 153b1d4870
commit 1f5fa2dd1c
4 changed files with 67 additions and 4 deletions
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2
drivers/net/ethernet/hisilicon/hns/hns_dsaf_mac.c
View file

@ -1085,6 +1085,8 @@ void hns_mac_set_promisc(struct hns_mac_cb *mac_cb, u8 en)
{
struct mac_driver *mac_ctrl_drv = hns_mac_get_drv(mac_cb);
hns_dsaf_set_promisc_tcam(mac_cb->dsaf_dev, mac_cb->mac_id, !!en);
if (mac_ctrl_drv->set_promiscuous)
mac_ctrl_drv->set_promiscuous(mac_ctrl_drv, en);
}

63
drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
View file

@ -765,7 +765,7 @@ static void hns_dsaf_tbl_tcam_data_ucast_pul(
void hns_dsaf_set_promisc_mode(struct dsaf_device *dsaf_dev, u32 en)
{
if (!HNS_DSAF_IS_DEBUG(dsaf_dev))
if (AE_IS_VER1(dsaf_dev->dsaf_ver) && !HNS_DSAF_IS_DEBUG(dsaf_dev))
dsaf_set_dev_bit(dsaf_dev, DSAF_CFG_0_REG,
DSAF_CFG_MIX_MODE_S, !!en);
}
@ -1384,6 +1384,12 @@ static int hns_dsaf_init(struct dsaf_device *dsaf_dev)
if (HNS_DSAF_IS_DEBUG(dsaf_dev))
return 0;
if (AE_IS_VER1(dsaf_dev->dsaf_ver))
dsaf_dev->tcam_max_num = DSAF_TCAM_SUM;
else
dsaf_dev->tcam_max_num =
DSAF_TCAM_SUM - DSAFV2_MAC_FUZZY_TCAM_NUM;
spin_lock_init(&dsaf_dev->tcam_lock);
ret = hns_dsaf_init_hw(dsaf_dev);
if (ret)
@ -1439,7 +1445,7 @@ static u16 hns_dsaf_find_soft_mac_entry(
u32 i;
soft_mac_entry = priv->soft_mac_tbl;
for (i = 0; i < DSAF_TCAM_SUM; i++) {
for (i = 0; i < dsaf_dev->tcam_max_num; i++) {
/* invall tab entry */
if ((soft_mac_entry->index != DSAF_INVALID_ENTRY_IDX) &&
(soft_mac_entry->tcam_key.high.val == mac_key->high.val) &&
@ -1464,7 +1470,7 @@ static u16 hns_dsaf_find_empty_mac_entry(struct dsaf_device *dsaf_dev)
u32 i;
soft_mac_entry = priv->soft_mac_tbl;
for (i = 0; i < DSAF_TCAM_SUM; i++) {
for (i = 0; i < dsaf_dev->tcam_max_num; i++) {
/* inv all entry */
if (soft_mac_entry->index == DSAF_INVALID_ENTRY_IDX)
/* return find result --soft index */
@ -2040,7 +2046,7 @@ int hns_dsaf_get_mac_entry_by_index(
struct dsaf_tbl_tcam_ucast_cfg mac_uc_data;
char mac_addr[ETH_ALEN] = {0};
if (entry_index >= DSAF_TCAM_SUM) {
if (entry_index >= dsaf_dev->tcam_max_num) {
/* find none, del error */
dev_err(dsaf_dev->dev, "get_uc_entry failed, %s\n",
dsaf_dev->ae_dev.name);
@ -2732,6 +2738,55 @@ int hns_dsaf_get_regs_count(void)
return DSAF_DUMP_REGS_NUM;
}
/* Reserve the last TCAM entry for promisc support */
#define dsaf_promisc_tcam_entry(port) \
(DSAF_TCAM_SUM - DSAFV2_MAC_FUZZY_TCAM_NUM + (port))
void hns_dsaf_set_promisc_tcam(struct dsaf_device *dsaf_dev,
u32 port, bool enable)
{
struct dsaf_drv_priv *priv = hns_dsaf_dev_priv(dsaf_dev);
struct dsaf_drv_soft_mac_tbl *soft_mac_entry = priv->soft_mac_tbl;
u16 entry_index;
struct dsaf_drv_tbl_tcam_key tbl_tcam_data, tbl_tcam_mask;
struct dsaf_tbl_tcam_mcast_cfg mac_data = {0};
if ((AE_IS_VER1(dsaf_dev->dsaf_ver)) || HNS_DSAF_IS_DEBUG(dsaf_dev))
return;
/* find the tcam entry index for promisc */
entry_index = dsaf_promisc_tcam_entry(port);
/* config key mask */
if (enable) {
memset(&tbl_tcam_data, 0, sizeof(tbl_tcam_data));
memset(&tbl_tcam_mask, 0, sizeof(tbl_tcam_mask));
tbl_tcam_data.low.bits.port = port;
tbl_tcam_mask.low.bits.port = 0xf; /* [3:0]: port id */
/* SUB_QID */
dsaf_set_bit(mac_data.tbl_mcast_port_msk[0],
DSAF_SERVICE_NW_NUM, true);
mac_data.tbl_mcast_item_vld = true; /* item_vld bit */
} else {
mac_data.tbl_mcast_item_vld = false; /* item_vld bit */
}
dev_dbg(dsaf_dev->dev,
"set_promisc_entry, %s Mac key(%#x:%#x) entry_index%d\n",
dsaf_dev->ae_dev.name, tbl_tcam_data.high.val,
tbl_tcam_data.low.val, entry_index);
/* config promisc entry with mask */
hns_dsaf_tcam_mc_cfg(dsaf_dev, entry_index,
(struct dsaf_tbl_tcam_data *)&tbl_tcam_data,
(struct dsaf_tbl_tcam_data *)&tbl_tcam_mask,
&mac_data);
/* config software entry */
soft_mac_entry += entry_index;
soft_mac_entry->index = enable ? entry_index : DSAF_INVALID_ENTRY_IDX;
}
/**
* dsaf_probe - probo dsaf dev
* @pdev: dasf platform device

3
drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.h
View file

@ -341,6 +341,7 @@ struct dsaf_device {
enum hal_dsaf_mode dsaf_en;
enum hal_dsaf_tc_mode dsaf_tc_mode;
u32 dsaf_ver;
u16 tcam_max_num; /* max TCAM entry for user except promisc */
struct ppe_common_cb *ppe_common[DSAF_COMM_DEV_NUM];
struct rcb_common_cb *rcb_common[DSAF_COMM_DEV_NUM];
@ -459,6 +460,8 @@ void hns_dsaf_get_strings(int stringset, u8 *data, int port,
void hns_dsaf_get_regs(struct dsaf_device *ddev, u32 port, void *data);
int hns_dsaf_get_regs_count(void);
void hns_dsaf_set_promisc_mode(struct dsaf_device *dsaf_dev, u32 en);
void hns_dsaf_set_promisc_tcam(struct dsaf_device *dsaf_dev,
u32 port, bool enable);
void hns_dsaf_get_rx_mac_pause_en(struct dsaf_device *dsaf_dev, int mac_id,
u32 *en);

3
drivers/net/ethernet/hisilicon/hns/hns_dsaf_reg.h
View file

@ -41,6 +41,9 @@
#define DSAF_SW_PORT_NUM 8
#define DSAF_TOTAL_QUEUE_NUM 129
/* reserved a tcam entry for each port to support promisc by fuzzy match */
#define DSAFV2_MAC_FUZZY_TCAM_NUM DSAF_MAX_PORT_NUM
#define DSAF_TCAM_SUM 512
#define DSAF_LINE_SUM (2048 * 14)