Currently there's no flow director filter stored in SW. This
patch stores flow director filters in SW with cuckoo hash,
also adds protection if a flow director filter has been added.
Signed-off-by: Beilei Xing <beilei.x...@intel.com>
---
drivers/net/i40e/i40e_ethdev.c | 48 +++++++++++++++++++++
drivers/net/i40e/i40e_ethdev.h | 12 ++++++
drivers/net/i40e/i40e_fdir.c | 98 ++++++++++++++++++++++++++++++++++++++++++
3 files changed, 158 insertions(+)
diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index c012d5d..427ebdc 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -962,6 +962,7 @@ eth_i40e_dev_init(struct rte_eth_dev *dev)
uint8_t aq_fail = 0;
struct i40e_ethertype_rule *ethertype_rule = &pf->ethertype;
struct i40e_tunnel_rule *tunnel_rule = &pf->tunnel;
+ struct i40e_fdir_info *fdir_info = &pf->fdir;
PMD_INIT_FUNC_TRACE();
@@ -981,6 +982,14 @@ eth_i40e_dev_init(struct rte_eth_dev *dev)
.hash_func = rte_hash_crc,
};
+ char fdir_hash_name[RTE_HASH_NAMESIZE];
+ struct rte_hash_parameters fdir_hash_params = {
+ .name = fdir_hash_name,
+ .entries = I40E_MAX_FDIR_FILTER_NUM,
+ .key_len = sizeof(struct rte_eth_fdir_input),
+ .hash_func = rte_hash_crc,
+ };
+
dev->dev_ops = &i40e_eth_dev_ops;
dev->rx_pkt_burst = i40e_recv_pkts;
dev->tx_pkt_burst = i40e_xmit_pkts;
@@ -1262,8 +1271,33 @@ eth_i40e_dev_init(struct rte_eth_dev *dev)
goto err_tunnel_hash_map_alloc;
}
+ /* Initialize flow director filter rule list and hash */
+ TAILQ_INIT(&fdir_info->fdir_list);
+ snprintf(fdir_hash_name, RTE_HASH_NAMESIZE,
+ "fdir_%s", dev->data->name);
+ fdir_info->hash_table = rte_hash_create(&fdir_hash_params);
+ if (!fdir_info->hash_table) {
+ PMD_INIT_LOG(ERR, "Failed to create fdir hash table!");
+ ret = -EINVAL;
+ goto err_fdir_hash_table_create;
+ }
+ fdir_info->hash_map = rte_zmalloc("i40e_fdir_hash_map",
+ sizeof(struct i40e_fdir_filter *) *
+ I40E_MAX_FDIR_FILTER_NUM,
+ 0);
+ if (!fdir_info->hash_map) {
+ PMD_INIT_LOG(ERR,
+ "Failed to allocate memory for fdir hash map!");
+ ret = -ENOMEM;
+ goto err_fdir_hash_map_alloc;
+ }
+
return 0;
+err_fdir_hash_map_alloc:
+ rte_hash_free(fdir_info->hash_table);
+err_fdir_hash_table_create:
+ rte_free(tunnel_rule->hash_map);
err_tunnel_hash_map_alloc:
rte_hash_free(tunnel_rule->hash_table);
err_tunnel_hash_table_create:
@@ -1300,10 +1334,12 @@ eth_i40e_dev_uninit(struct rte_eth_dev *dev)
struct i40e_filter_control_settings settings;
struct i40e_ethertype_filter *p_ethertype;
struct i40e_tunnel_filter *p_tunnel;
+ struct i40e_fdir_filter *p_fdir;
int ret;
uint8_t aq_fail = 0;
struct i40e_ethertype_rule *ethertype_rule;
struct i40e_tunnel_rule *tunnel_rule;
+ struct i40e_fdir_info *fdir_info;
PMD_INIT_FUNC_TRACE();
@@ -1315,6 +1351,7 @@ eth_i40e_dev_uninit(struct rte_eth_dev *dev)
pci_dev = dev->pci_dev;
ethertype_rule = &pf->ethertype;
tunnel_rule = &pf->tunnel;
+ fdir_info = &pf->fdir;
if (hw->adapter_stopped == 0)
i40e_dev_close(dev);
@@ -1342,6 +1379,17 @@ eth_i40e_dev_uninit(struct rte_eth_dev *dev)
rte_free(p_tunnel);
}
+ /* Remove all flow director rules and hash */
+ if (fdir_info->hash_map)
+ rte_free(fdir_info->hash_map);
+ if (fdir_info->hash_table)
+ rte_hash_free(fdir_info->hash_table);
+
+ while ((p_fdir = TAILQ_FIRST(&fdir_info->fdir_list))) {
+ TAILQ_REMOVE(&fdir_info->fdir_list, p_fdir, rules);
+ rte_free(p_fdir);
+ }
+
dev->dev_ops = NULL;
dev->rx_pkt_burst = NULL;
dev->tx_pkt_burst = NULL;
diff --git a/drivers/net/i40e/i40e_ethdev.h b/drivers/net/i40e/i40e_ethdev.h
index c05436c..71756ae 100644
--- a/drivers/net/i40e/i40e_ethdev.h
+++ b/drivers/net/i40e/i40e_ethdev.h
@@ -377,6 +377,14 @@ struct i40e_fdir_flex_mask {
};
#define I40E_FILTER_PCTYPE_MAX 64
+#define I40E_MAX_FDIR_FILTER_NUM (1024 * 8)
+
+struct i40e_fdir_filter {
+ TAILQ_ENTRY(i40e_fdir_filter) rules;
+ struct rte_eth_fdir_filter fdir;
+};
+
+TAILQ_HEAD(i40e_fdir_filter_list, i40e_fdir_filter);
/*
* A structure used to define fields of a FDIR related info.
*/
@@ -395,6 +403,10 @@ struct i40e_fdir_info {
*/
struct i40e_fdir_flex_pit flex_set[I40E_MAX_FLXPLD_LAYER *
I40E_MAX_FLXPLD_FIED];
struct i40e_fdir_flex_mask flex_mask[I40E_FILTER_PCTYPE_MAX];
+
+ struct i40e_fdir_filter_list fdir_list;
+ struct i40e_fdir_filter **hash_map;
+ struct rte_hash *hash_table;
};
/* Ethertype filter number HW supports */
diff --git a/drivers/net/i40e/i40e_fdir.c b/drivers/net/i40e/i40e_fdir.c
index 335bf15..faa2495 100644
--- a/drivers/net/i40e/i40e_fdir.c
+++ b/drivers/net/i40e/i40e_fdir.c
@@ -121,6 +121,16 @@ static int i40e_fdir_filter_programming(struct i40e_pf *pf,
bool add);
static int i40e_fdir_flush(struct rte_eth_dev *dev);
+static int i40e_fdir_filter_convert(const struct rte_eth_fdir_filter *input,
+ struct i40e_fdir_filter *filter);
+static struct i40e_fdir_filter *
+i40e_sw_fdir_filter_lookup(struct i40e_fdir_info *fdir_info,
+ const struct rte_eth_fdir_input *input);
+static int i40e_sw_fdir_filter_insert(struct i40e_pf *pf,
+ struct i40e_fdir_filter *filter);
+static int i40e_sw_fdir_filter_del(struct i40e_pf *pf,
+ struct i40e_fdir_filter *filter);
+
static int
i40e_fdir_rx_queue_init(struct i40e_rx_queue *rxq)
{
@@ -1017,6 +1027,69 @@ i40e_check_fdir_programming_status(struct i40e_rx_queue
*rxq)
return ret;
}
+static int
+i40e_fdir_filter_convert(const struct rte_eth_fdir_filter *input,
+ struct i40e_fdir_filter *filter)
+{
+ rte_memcpy(&filter->fdir, input, sizeof(struct rte_eth_fdir_filter));
+ return 0;
+}
+
+/* Check if there exists the flow director filter */
+static struct i40e_fdir_filter *
+i40e_sw_fdir_filter_lookup(struct i40e_fdir_info *fdir_info,
+ const struct rte_eth_fdir_input *input)
+{
+ int ret = 0;
+
+ ret = rte_hash_lookup(fdir_info->hash_table, (const void *)input);
+ if (ret < 0)
+ return NULL;
+
+ return fdir_info->hash_map[ret];
+}
+
+/* Add a flow director filter into the SW list */
+static int
+i40e_sw_fdir_filter_insert(struct i40e_pf *pf, struct i40e_fdir_filter *filter)
+{
+ struct i40e_fdir_info *fdir_info = &pf->fdir;
+ int ret = 0;
+
+ ret = rte_hash_add_key(fdir_info->hash_table,
+ &filter->fdir.input);
+ if (ret < 0)
+ PMD_DRV_LOG(ERR,
+ "Failed to insert fdir filter to hash table %d!",
+ ret);
+ fdir_info->hash_map[ret] = filter;
+
+ TAILQ_INSERT_TAIL(&fdir_info->fdir_list, filter, rules);
+
+ return 0;
+}
+
+/* Delete a flow director filter from the SW list */
+static int
+i40e_sw_fdir_filter_del(struct i40e_pf *pf, struct i40e_fdir_filter *filter)
+{
+ struct i40e_fdir_info *fdir_info = &pf->fdir;
+ int ret = 0;
+
+ ret = rte_hash_del_key(fdir_info->hash_table,
+ &filter->fdir.input);
+ if (ret < 0)
+ PMD_DRV_LOG(ERR,
+ "Failed to delete fdir filter to hash table %d!",
+ ret);
+ fdir_info->hash_map[ret] = NULL;
+
+ TAILQ_REMOVE(&fdir_info->fdir_list, filter, rules);
+ rte_free(filter);
+
+ return 0;
+}
+
/*
* i40e_add_del_fdir_filter - add or remove a flow director filter.
* @pf: board private structure
@@ -1032,6 +1105,8 @@ i40e_add_del_fdir_filter(struct rte_eth_dev *dev,
struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
unsigned char *pkt = (unsigned char *)pf->fdir.prg_pkt;
enum i40e_filter_pctype pctype;
+ struct i40e_fdir_info *fdir_info = &pf->fdir;
+ struct i40e_fdir_filter *fdir_filter, *node;
int ret = 0;
if (dev->data->dev_conf.fdir_conf.mode != RTE_FDIR_MODE_PERFECT) {
@@ -1054,6 +1129,21 @@ i40e_add_del_fdir_filter(struct rte_eth_dev *dev,
return -EINVAL;
}
+ fdir_filter = rte_zmalloc("fdir_filter", sizeof(*fdir_filter), 0);
+ i40e_fdir_filter_convert(filter, fdir_filter);
+ node = i40e_sw_fdir_filter_lookup(fdir_info, &fdir_filter->fdir.input);
+ if (add && node) {
+ PMD_DRV_LOG(ERR,
+ "Conflict with existing flow director rules!");
+ rte_free(fdir_filter);
+ return -EINVAL;
+ } else if (!add && !node) {
+ PMD_DRV_LOG(ERR,
+ "There's no corresponding flow firector filter!");
+ rte_free(fdir_filter);
+ return -EINVAL;
+ }
+
memset(pkt, 0, I40E_FDIR_PKT_LEN);
ret = i40e_fdir_construct_pkt(pf, &filter->input, pkt);
@@ -1077,6 +1167,14 @@ i40e_add_del_fdir_filter(struct rte_eth_dev *dev,
pctype);
return ret;
}
+
+ if (add) {
+ ret = i40e_sw_fdir_filter_insert(pf, fdir_filter);
+ } else {
+ ret = i40e_sw_fdir_filter_del(pf, node);
+ rte_free(fdir_filter);
+ }
+
return ret;
}
--
2.5.5
