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Date: Wed, 2 Jun 2021 13:59:47 +0200
From: Simon Horman <simon.horman@...igine.com>
To: David Miller <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>
Cc: netdev@...r.kernel.org, oss-drivers@...igine.com,
Louis Peens <louis.peens@...igine.com>,
Yinjun Zhang <yinjun.zhang@...igine.com>,
Simon Horman <simon.horman@...igine.com>
Subject: [PATCH net-next v3 3/8] nfp: flower-ct: add ct zone table
From: Louis Peens <louis.peens@...igine.com>
Add initial zone table to nfp_flower_priv. This table will be used
to store all the information required to offload conntrack.
Signed-off-by: Louis Peens <louis.peens@...igine.com>
Signed-off-by: Yinjun Zhang <yinjun.zhang@...igine.com>
Signed-off-by: Simon Horman <simon.horman@...igine.com>
---
.../ethernet/netronome/nfp/flower/conntrack.h | 17 ++++++++++++++
.../net/ethernet/netronome/nfp/flower/main.h | 2 ++
.../ethernet/netronome/nfp/flower/metadata.c | 22 ++++++++++++++++++-
3 files changed, 40 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/netronome/nfp/flower/conntrack.h b/drivers/net/ethernet/netronome/nfp/flower/conntrack.h
index e8d034bb9807..5f1f54ccc5a1 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/conntrack.h
+++ b/drivers/net/ethernet/netronome/nfp/flower/conntrack.h
@@ -6,6 +6,23 @@
#include "main.h"
+extern const struct rhashtable_params nfp_zone_table_params;
+
+/**
+ * struct nfp_fl_ct_zone_entry - Zone entry containing conntrack flow information
+ * @zone: The zone number, used as lookup key in hashtable
+ * @hash_node: Used by the hashtable
+ * @priv: Pointer to nfp_flower_priv data
+ * @nft: Pointer to nf_flowtable for this zone
+ */
+struct nfp_fl_ct_zone_entry {
+ u16 zone;
+ struct rhash_head hash_node;
+
+ struct nfp_flower_priv *priv;
+ struct nf_flowtable *nft;
+};
+
bool is_pre_ct_flow(struct flow_cls_offload *flow);
bool is_post_ct_flow(struct flow_cls_offload *flow);
diff --git a/drivers/net/ethernet/netronome/nfp/flower/main.h b/drivers/net/ethernet/netronome/nfp/flower/main.h
index 31377923ea3d..0073851f31d7 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/main.h
+++ b/drivers/net/ethernet/netronome/nfp/flower/main.h
@@ -193,6 +193,7 @@ struct nfp_fl_internal_ports {
* @qos_stats_lock: Lock on qos stats updates
* @pre_tun_rule_cnt: Number of pre-tunnel rules offloaded
* @merge_table: Hash table to store merged flows
+ * @ct_zone_table: Hash table used to store the different zones
*/
struct nfp_flower_priv {
struct nfp_app *app;
@@ -227,6 +228,7 @@ struct nfp_flower_priv {
spinlock_t qos_stats_lock; /* Protect the qos stats */
int pre_tun_rule_cnt;
struct rhashtable merge_table;
+ struct rhashtable ct_zone_table;
};
/**
diff --git a/drivers/net/ethernet/netronome/nfp/flower/metadata.c b/drivers/net/ethernet/netronome/nfp/flower/metadata.c
index 327bb56b3ef5..4a00ce803df1 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/metadata.c
+++ b/drivers/net/ethernet/netronome/nfp/flower/metadata.c
@@ -9,6 +9,7 @@
#include <net/pkt_cls.h>
#include "cmsg.h"
+#include "conntrack.h"
#include "main.h"
#include "../nfp_app.h"
@@ -496,6 +497,13 @@ const struct rhashtable_params merge_table_params = {
.key_len = sizeof(u64),
};
+const struct rhashtable_params nfp_zone_table_params = {
+ .head_offset = offsetof(struct nfp_fl_ct_zone_entry, hash_node),
+ .key_len = sizeof(u16),
+ .key_offset = offsetof(struct nfp_fl_ct_zone_entry, zone),
+ .automatic_shrinking = false,
+};
+
int nfp_flower_metadata_init(struct nfp_app *app, u64 host_ctx_count,
unsigned int host_num_mems)
{
@@ -516,6 +524,10 @@ int nfp_flower_metadata_init(struct nfp_app *app, u64 host_ctx_count,
if (err)
goto err_free_stats_ctx_table;
+ err = rhashtable_init(&priv->ct_zone_table, &nfp_zone_table_params);
+ if (err)
+ goto err_free_merge_table;
+
get_random_bytes(&priv->mask_id_seed, sizeof(priv->mask_id_seed));
/* Init ring buffer and unallocated mask_ids. */
@@ -523,7 +535,7 @@ int nfp_flower_metadata_init(struct nfp_app *app, u64 host_ctx_count,
kmalloc_array(NFP_FLOWER_MASK_ENTRY_RS,
NFP_FLOWER_MASK_ELEMENT_RS, GFP_KERNEL);
if (!priv->mask_ids.mask_id_free_list.buf)
- goto err_free_merge_table;
+ goto err_free_ct_zone_table;
priv->mask_ids.init_unallocated = NFP_FLOWER_MASK_ENTRY_RS - 1;
@@ -560,6 +572,8 @@ int nfp_flower_metadata_init(struct nfp_app *app, u64 host_ctx_count,
kfree(priv->mask_ids.last_used);
err_free_mask_id:
kfree(priv->mask_ids.mask_id_free_list.buf);
+err_free_ct_zone_table:
+ rhashtable_destroy(&priv->ct_zone_table);
err_free_merge_table:
rhashtable_destroy(&priv->merge_table);
err_free_stats_ctx_table:
@@ -569,6 +583,10 @@ int nfp_flower_metadata_init(struct nfp_app *app, u64 host_ctx_count,
return -ENOMEM;
}
+static void nfp_free_zone_table_entry(void *ptr, void *arg)
+{
+}
+
void nfp_flower_metadata_cleanup(struct nfp_app *app)
{
struct nfp_flower_priv *priv = app->priv;
@@ -582,6 +600,8 @@ void nfp_flower_metadata_cleanup(struct nfp_app *app)
nfp_check_rhashtable_empty, NULL);
rhashtable_free_and_destroy(&priv->merge_table,
nfp_check_rhashtable_empty, NULL);
+ rhashtable_free_and_destroy(&priv->ct_zone_table,
+ nfp_free_zone_table_entry, NULL);
kvfree(priv->stats);
kfree(priv->mask_ids.mask_id_free_list.buf);
kfree(priv->mask_ids.last_used);
--
2.20.1
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