Commit a87ceb3d authored by Wentao Jia's avatar Wentao Jia Committed by Jakub Kicinski

nfp: flower: offload tc flows of multiple conntrack zones

If goto_chain action present in the post ct flow rule, merge flow rules
in this ct-zone, create a new pre_ct entry as the pre ct flow rule of
next ct-zone, but do not offload merged flow rules to firmware. Repeat
the process in the next ct-zone until no goto_chain action present in
the post ct flow rule in a certain ct-zone, merged all the flow rules.
Offload to firmware finally.
Signed-off-by: default avatarWentao Jia <wentao.jia@corigine.com>
Acked-by: default avatarSimon Horman <simon.horman@corigine.com>
Signed-off-by: default avatarLouis Peens <louis.peens@corigine.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 46a83c85
......@@ -522,6 +522,21 @@ static int nfp_ct_check_vlan_merge(struct flow_action_entry *a_in,
return 0;
}
/* Extra check for multiple ct-zones merge
* currently surpport nft entries merge check in different zones
*/
static int nfp_ct_merge_extra_check(struct nfp_fl_ct_flow_entry *nft_entry,
struct nfp_fl_ct_tc_merge *tc_m_entry)
{
struct nfp_fl_nft_tc_merge *prev_nft_m_entry;
struct nfp_fl_ct_flow_entry *pre_ct_entry;
pre_ct_entry = tc_m_entry->pre_ct_parent;
prev_nft_m_entry = pre_ct_entry->prev_m_entries[pre_ct_entry->num_prev_m_entries - 1];
return nfp_ct_merge_check(prev_nft_m_entry->nft_parent, nft_entry);
}
static int nfp_ct_merge_act_check(struct nfp_fl_ct_flow_entry *pre_ct_entry,
struct nfp_fl_ct_flow_entry *post_ct_entry,
struct nfp_fl_ct_flow_entry *nft_entry)
......@@ -796,27 +811,34 @@ static int nfp_fl_ct_add_offload(struct nfp_fl_nft_tc_merge *m_entry)
{
enum nfp_flower_tun_type tun_type = NFP_FL_TUNNEL_NONE;
struct nfp_fl_ct_zone_entry *zt = m_entry->zt;
struct flow_rule *rules[NFP_MAX_ENTRY_RULES];
struct nfp_fl_ct_flow_entry *pre_ct_entry;
struct nfp_fl_key_ls key_layer, tmp_layer;
struct nfp_flower_priv *priv = zt->priv;
u16 key_map[_FLOW_PAY_LAYERS_MAX];
struct nfp_fl_payload *flow_pay;
struct flow_rule *rules[_CT_TYPE_MAX];
int num_rules = _CT_TYPE_MAX;
u8 *key, *msk, *kdata, *mdata;
struct nfp_port *port = NULL;
int num_rules, err, i, j = 0;
struct net_device *netdev;
bool qinq_sup;
u32 port_id;
u16 offset;
int i, err;
netdev = m_entry->netdev;
qinq_sup = !!(priv->flower_ext_feats & NFP_FL_FEATS_VLAN_QINQ);
rules[CT_TYPE_PRE_CT] = m_entry->tc_m_parent->pre_ct_parent->rule;
rules[CT_TYPE_NFT] = m_entry->nft_parent->rule;
rules[CT_TYPE_POST_CT] = m_entry->tc_m_parent->post_ct_parent->rule;
pre_ct_entry = m_entry->tc_m_parent->pre_ct_parent;
num_rules = pre_ct_entry->num_prev_m_entries * 2 + _CT_TYPE_MAX;
for (i = 0; i < pre_ct_entry->num_prev_m_entries; i++) {
rules[j++] = pre_ct_entry->prev_m_entries[i]->tc_m_parent->pre_ct_parent->rule;
rules[j++] = pre_ct_entry->prev_m_entries[i]->nft_parent->rule;
}
rules[j++] = m_entry->tc_m_parent->pre_ct_parent->rule;
rules[j++] = m_entry->nft_parent->rule;
rules[j++] = m_entry->tc_m_parent->post_ct_parent->rule;
memset(&key_layer, 0, sizeof(struct nfp_fl_key_ls));
memset(&key_map, 0, sizeof(key_map));
......@@ -1181,6 +1203,12 @@ static int nfp_ct_do_nft_merge(struct nfp_fl_ct_zone_entry *zt,
if (err)
return err;
if (pre_ct_entry->num_prev_m_entries > 0) {
err = nfp_ct_merge_extra_check(nft_entry, tc_m_entry);
if (err)
return err;
}
/* Combine tc_merge and nft cookies for this cookie. */
new_cookie[0] = tc_m_entry->cookie[0];
new_cookie[1] = tc_m_entry->cookie[1];
......@@ -1211,11 +1239,6 @@ static int nfp_ct_do_nft_merge(struct nfp_fl_ct_zone_entry *zt,
list_add(&nft_m_entry->tc_merge_list, &tc_m_entry->children);
list_add(&nft_m_entry->nft_flow_list, &nft_entry->children);
/* Generate offload structure and send to nfp */
err = nfp_fl_ct_add_offload(nft_m_entry);
if (err)
goto err_nft_ct_offload;
err = rhashtable_insert_fast(&zt->nft_merge_tb, &nft_m_entry->hash_node,
nfp_nft_ct_merge_params);
if (err)
......@@ -1223,12 +1246,20 @@ static int nfp_ct_do_nft_merge(struct nfp_fl_ct_zone_entry *zt,
zt->nft_merge_count++;
if (post_ct_entry->goto_chain_index > 0)
return nfp_fl_create_new_pre_ct(nft_m_entry);
/* Generate offload structure and send to nfp */
err = nfp_fl_ct_add_offload(nft_m_entry);
if (err)
goto err_nft_ct_offload;
return err;
err_nft_ct_merge_insert:
err_nft_ct_offload:
nfp_fl_ct_del_offload(zt->priv->app, nft_m_entry->tc_flower_cookie,
nft_m_entry->netdev);
err_nft_ct_offload:
err_nft_ct_merge_insert:
list_del(&nft_m_entry->tc_merge_list);
list_del(&nft_m_entry->nft_flow_list);
kfree(nft_m_entry);
......@@ -1474,7 +1505,7 @@ nfp_fl_ct_flow_entry *nfp_fl_ct_add_flow(struct nfp_fl_ct_zone_entry *zt,
entry->zt = zt;
entry->netdev = netdev;
entry->cookie = flow->cookie;
entry->cookie = flow->cookie > 0 ? flow->cookie : (unsigned long)entry;
entry->chain_index = flow->common.chain_index;
entry->tun_offset = NFP_FL_CT_NO_TUN;
......@@ -1514,6 +1545,9 @@ nfp_fl_ct_flow_entry *nfp_fl_ct_add_flow(struct nfp_fl_ct_zone_entry *zt,
INIT_LIST_HEAD(&entry->children);
if (flow->cookie == 0)
return entry;
/* Now add a ct map entry to flower-priv */
map = get_hashentry(&zt->priv->ct_map_table, &flow->cookie,
nfp_ct_map_params, sizeof(*map));
......@@ -1572,6 +1606,14 @@ static void cleanup_nft_merge_entry(struct nfp_fl_nft_tc_merge *m_entry)
list_del(&m_entry->tc_merge_list);
list_del(&m_entry->nft_flow_list);
if (m_entry->next_pre_ct_entry) {
struct nfp_fl_ct_map_entry pre_ct_map_ent;
pre_ct_map_ent.ct_entry = m_entry->next_pre_ct_entry;
pre_ct_map_ent.cookie = 0;
nfp_fl_ct_del_flow(&pre_ct_map_ent);
}
kfree(m_entry);
}
......@@ -1742,7 +1784,8 @@ nfp_ct_merge_nft_with_tc(struct nfp_fl_ct_flow_entry *nft_entry,
int nfp_fl_ct_handle_pre_ct(struct nfp_flower_priv *priv,
struct net_device *netdev,
struct flow_cls_offload *flow,
struct netlink_ext_ack *extack)
struct netlink_ext_ack *extack,
struct nfp_fl_nft_tc_merge *m_entry)
{
struct flow_action_entry *ct_act, *ct_goto;
struct nfp_fl_ct_flow_entry *ct_entry;
......@@ -1787,6 +1830,20 @@ int nfp_fl_ct_handle_pre_ct(struct nfp_flower_priv *priv,
ct_entry->type = CT_TYPE_PRE_CT;
ct_entry->chain_index = flow->common.chain_index;
ct_entry->goto_chain_index = ct_goto->chain_index;
if (m_entry) {
struct nfp_fl_ct_flow_entry *pre_ct_entry;
int i;
pre_ct_entry = m_entry->tc_m_parent->pre_ct_parent;
for (i = 0; i < pre_ct_entry->num_prev_m_entries; i++)
ct_entry->prev_m_entries[i] = pre_ct_entry->prev_m_entries[i];
ct_entry->prev_m_entries[i++] = m_entry;
ct_entry->num_prev_m_entries = i;
m_entry->next_pre_ct_entry = ct_entry;
}
list_add(&ct_entry->list_node, &zt->pre_ct_list);
zt->pre_ct_count++;
......@@ -1864,6 +1921,28 @@ int nfp_fl_ct_handle_post_ct(struct nfp_flower_priv *priv,
return 0;
}
int nfp_fl_create_new_pre_ct(struct nfp_fl_nft_tc_merge *m_entry)
{
struct nfp_fl_ct_flow_entry *pre_ct_entry, *post_ct_entry;
struct flow_cls_offload new_pre_ct_flow;
int err;
pre_ct_entry = m_entry->tc_m_parent->pre_ct_parent;
if (pre_ct_entry->num_prev_m_entries >= NFP_MAX_RECIRC_CT_ZONES - 1)
return -1;
post_ct_entry = m_entry->tc_m_parent->post_ct_parent;
memset(&new_pre_ct_flow, 0, sizeof(struct flow_cls_offload));
new_pre_ct_flow.rule = post_ct_entry->rule;
new_pre_ct_flow.common.chain_index = post_ct_entry->chain_index;
err = nfp_fl_ct_handle_pre_ct(pre_ct_entry->zt->priv,
pre_ct_entry->netdev,
&new_pre_ct_flow, NULL,
m_entry);
return err;
}
static void
nfp_fl_ct_sub_stats(struct nfp_fl_nft_tc_merge *nft_merge,
enum ct_entry_type type, u64 *m_pkts,
......@@ -1909,6 +1988,32 @@ nfp_fl_ct_sub_stats(struct nfp_fl_nft_tc_merge *nft_merge,
0, priv->stats[ctx_id].used,
FLOW_ACTION_HW_STATS_DELAYED);
}
/* Update previous pre_ct/post_ct/nft flow stats */
if (nft_merge->tc_m_parent->pre_ct_parent->num_prev_m_entries > 0) {
struct nfp_fl_nft_tc_merge *tmp_nft_merge;
int i;
for (i = 0; i < nft_merge->tc_m_parent->pre_ct_parent->num_prev_m_entries; i++) {
tmp_nft_merge = nft_merge->tc_m_parent->pre_ct_parent->prev_m_entries[i];
flow_stats_update(&tmp_nft_merge->tc_m_parent->pre_ct_parent->stats,
priv->stats[ctx_id].bytes,
priv->stats[ctx_id].pkts,
0, priv->stats[ctx_id].used,
FLOW_ACTION_HW_STATS_DELAYED);
flow_stats_update(&tmp_nft_merge->tc_m_parent->post_ct_parent->stats,
priv->stats[ctx_id].bytes,
priv->stats[ctx_id].pkts,
0, priv->stats[ctx_id].used,
FLOW_ACTION_HW_STATS_DELAYED);
flow_stats_update(&tmp_nft_merge->nft_parent->stats,
priv->stats[ctx_id].bytes,
priv->stats[ctx_id].pkts,
0, priv->stats[ctx_id].used,
FLOW_ACTION_HW_STATS_DELAYED);
}
}
/* Reset stats from the nfp */
priv->stats[ctx_id].pkts = 0;
priv->stats[ctx_id].bytes = 0;
......@@ -2113,10 +2218,12 @@ int nfp_fl_ct_del_flow(struct nfp_fl_ct_map_entry *ct_map_ent)
switch (ct_entry->type) {
case CT_TYPE_PRE_CT:
zt->pre_ct_count--;
rhashtable_remove_fast(m_table, &ct_map_ent->hash_node,
nfp_ct_map_params);
if (ct_map_ent->cookie > 0)
rhashtable_remove_fast(m_table, &ct_map_ent->hash_node,
nfp_ct_map_params);
nfp_fl_ct_clean_flow_entry(ct_entry);
kfree(ct_map_ent);
if (ct_map_ent->cookie > 0)
kfree(ct_map_ent);
if (!zt->pre_ct_count) {
zt->nft = NULL;
......
......@@ -86,6 +86,9 @@ enum ct_entry_type {
_CT_TYPE_MAX,
};
#define NFP_MAX_RECIRC_CT_ZONES 4
#define NFP_MAX_ENTRY_RULES (NFP_MAX_RECIRC_CT_ZONES * 2 + 1)
enum nfp_nfp_layer_name {
FLOW_PAY_META_TCI = 0,
FLOW_PAY_INPORT,
......@@ -114,27 +117,31 @@ enum nfp_nfp_layer_name {
* @chain_index: Chain index of the original flow
* @goto_chain_index: goto chain index of the flow
* @netdev: netdev structure.
* @type: Type of pre-entry from enum ct_entry_type
* @zt: Reference to the zone table this belongs to
* @children: List of tc_merge flows this flow forms part of
* @rule: Reference to the original TC flow rule
* @stats: Used to cache stats for updating
* @prev_m_entries: Array of all previous nft_tc_merge entries
* @num_prev_m_entries: The number of all previous nft_tc_merge entries
* @tun_offset: Used to indicate tunnel action offset in action list
* @flags: Used to indicate flow flag like NAT which used by merge.
* @type: Type of ct-entry from enum ct_entry_type
*/
struct nfp_fl_ct_flow_entry {
unsigned long cookie;
struct list_head list_node;
u32 chain_index;
u32 goto_chain_index;
enum ct_entry_type type;
struct net_device *netdev;
struct nfp_fl_ct_zone_entry *zt;
struct list_head children;
struct flow_rule *rule;
struct flow_stats stats;
struct nfp_fl_nft_tc_merge *prev_m_entries[NFP_MAX_RECIRC_CT_ZONES - 1];
u8 num_prev_m_entries;
u8 tun_offset; // Set to NFP_FL_CT_NO_TUN if no tun
u8 flags;
u8 type;
};
/**
......@@ -171,6 +178,7 @@ struct nfp_fl_ct_tc_merge {
* @nft_parent: The nft_entry parent
* @tc_flower_cookie: The cookie of the flow offloaded to the nfp
* @flow_pay: Reference to the offloaded flow struct
* @next_pre_ct_entry: Reference to the next ct zone pre ct entry
*/
struct nfp_fl_nft_tc_merge {
struct net_device *netdev;
......@@ -183,6 +191,7 @@ struct nfp_fl_nft_tc_merge {
struct nfp_fl_ct_flow_entry *nft_parent;
unsigned long tc_flower_cookie;
struct nfp_fl_payload *flow_pay;
struct nfp_fl_ct_flow_entry *next_pre_ct_entry;
};
/**
......@@ -206,6 +215,7 @@ bool is_post_ct_flow(struct flow_cls_offload *flow);
* @netdev: netdev structure.
* @flow: TC flower classifier offload structure.
* @extack: Extack pointer for errors
* @m_entry:previous nfp_fl_nft_tc_merge entry
*
* Adds a new entry to the relevant zone table and tries to
* merge with other +trk+est entries and offload if possible.
......@@ -215,7 +225,8 @@ bool is_post_ct_flow(struct flow_cls_offload *flow);
int nfp_fl_ct_handle_pre_ct(struct nfp_flower_priv *priv,
struct net_device *netdev,
struct flow_cls_offload *flow,
struct netlink_ext_ack *extack);
struct netlink_ext_ack *extack,
struct nfp_fl_nft_tc_merge *m_entry);
/**
* nfp_fl_ct_handle_post_ct() - Handles +trk+est conntrack rules
* @priv: Pointer to app priv
......@@ -233,6 +244,19 @@ int nfp_fl_ct_handle_post_ct(struct nfp_flower_priv *priv,
struct flow_cls_offload *flow,
struct netlink_ext_ack *extack);
/**
* nfp_fl_create_new_pre_ct() - create next ct_zone -trk conntrack rules
* @m_entry:previous nfp_fl_nft_tc_merge entry
*
* Create a new pre_ct entry from previous nfp_fl_nft_tc_merge entry
* to the next relevant zone table. Try to merge with other +trk+est
* entries and offload if possible. The created new pre_ct entry is
* linked to the previous nfp_fl_nft_tc_merge entry.
*
* Return: negative value on error, 0 if configured successfully.
*/
int nfp_fl_create_new_pre_ct(struct nfp_fl_nft_tc_merge *m_entry);
/**
* nfp_fl_ct_clean_flow_entry() - Free a nfp_fl_ct_flow_entry
* @entry: Flow entry to cleanup
......
......@@ -1344,7 +1344,7 @@ nfp_flower_add_offload(struct nfp_app *app, struct net_device *netdev,
port = nfp_port_from_netdev(netdev);
if (is_pre_ct_flow(flow))
return nfp_fl_ct_handle_pre_ct(priv, netdev, flow, extack);
return nfp_fl_ct_handle_pre_ct(priv, netdev, flow, extack, NULL);
if (is_post_ct_flow(flow))
return nfp_fl_ct_handle_post_ct(priv, netdev, flow, extack);
......
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