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Date: Thu, 24 Aug 2017 08:40:09 +0200
From: Jiri Pirko <jiri@...nulli.us>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, arkadis@...lanox.com, idosch@...lanox.com,
mlxsw@...lanox.com
Subject: [patch net-next 11/12] mlxsw: spectrum_dpipe: Add support for IPv4 host table dump
From: Arkadi Sharshevsky <arkadis@...lanox.com>
Add support for IPv4 host table dump.
Signed-off-by: Arkadi Sharshevsky <arkadis@...lanox.com>
Signed-off-by: Jiri Pirko <jiri@...lanox.com>
---
.../net/ethernet/mellanox/mlxsw/spectrum_dpipe.c | 247 +++++++++++++++++++++
1 file changed, 247 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.c
index 9c2b25a..94d954b 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.c
@@ -353,6 +353,252 @@ mlxsw_sp_dpipe_table_host4_actions_dump(void *priv, struct sk_buff *skb)
return devlink_dpipe_action_put(skb, &action);
}
+enum mlxsw_sp_dpipe_table_host_match {
+ MLXSW_SP_DPIPE_TABLE_HOST_MATCH_RIF,
+ MLXSW_SP_DPIPE_TABLE_HOST_MATCH_DIP,
+ MLXSW_SP_DPIPE_TABLE_HOST_MATCH_COUNT,
+};
+
+static void
+mlxsw_sp_dpipe_table_host_match_action_prepare(struct devlink_dpipe_match *matches,
+ struct devlink_dpipe_action *action,
+ int type)
+{
+ struct devlink_dpipe_match *match;
+
+ match = &matches[MLXSW_SP_DPIPE_TABLE_HOST_MATCH_RIF];
+ match->type = DEVLINK_DPIPE_MATCH_TYPE_FIELD_EXACT;
+ match->header = &mlxsw_sp_dpipe_header_metadata;
+ match->field_id = MLXSW_SP_DPIPE_FIELD_METADATA_ERIF_PORT;
+
+ match = &matches[MLXSW_SP_DPIPE_TABLE_HOST_MATCH_DIP];
+ match->type = DEVLINK_DPIPE_MATCH_TYPE_FIELD_EXACT;
+ match->header = &devlink_dpipe_header_ipv4;
+ match->field_id = DEVLINK_DPIPE_FIELD_IPV4_DST_IP;
+
+ action->type = DEVLINK_DPIPE_ACTION_TYPE_FIELD_MODIFY;
+ action->header = &devlink_dpipe_header_ethernet;
+ action->field_id = DEVLINK_DPIPE_FIELD_ETHERNET_DST_MAC;
+}
+
+static int
+mlxsw_sp_dpipe_table_host_entry_prepare(struct devlink_dpipe_entry *entry,
+ struct devlink_dpipe_value *match_values,
+ struct devlink_dpipe_match *matches,
+ struct devlink_dpipe_value *action_value,
+ struct devlink_dpipe_action *action,
+ int type)
+{
+ struct devlink_dpipe_value *match_value;
+ struct devlink_dpipe_match *match;
+
+ entry->match_values = match_values;
+ entry->match_values_count = MLXSW_SP_DPIPE_TABLE_HOST_MATCH_COUNT;
+
+ entry->action_values = action_value;
+ entry->action_values_count = 1;
+
+ match = &matches[MLXSW_SP_DPIPE_TABLE_HOST_MATCH_RIF];
+ match_value = &match_values[MLXSW_SP_DPIPE_TABLE_HOST_MATCH_RIF];
+
+ match_value->match = match;
+ match_value->value_size = sizeof(u32);
+ match_value->value = kmalloc(match_value->value_size, GFP_KERNEL);
+ if (!match_value->value)
+ return -ENOMEM;
+
+ match = &matches[MLXSW_SP_DPIPE_TABLE_HOST_MATCH_DIP];
+ match_value = &match_values[MLXSW_SP_DPIPE_TABLE_HOST_MATCH_DIP];
+
+ match_value->match = match;
+ match_value->value_size = sizeof(u32);
+ match_value->value = kmalloc(match_value->value_size, GFP_KERNEL);
+ if (!match_value->value)
+ return -ENOMEM;
+
+ action_value->action = action;
+ action_value->value_size = sizeof(u64);
+ action_value->value = kmalloc(action_value->value_size, GFP_KERNEL);
+ if (!action_value->value)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static void
+__mlxsw_sp_dpipe_table_host4_entry_fill(struct devlink_dpipe_entry *entry,
+ struct mlxsw_sp_rif *rif,
+ unsigned char *ha, u32 dip)
+{
+ struct devlink_dpipe_value *value;
+ u32 *rif_value;
+ u32 *dip_value;
+ u8 *ha_value;
+
+ /* Set Match RIF index */
+ value = &entry->match_values[MLXSW_SP_DPIPE_TABLE_HOST_MATCH_RIF];
+
+ rif_value = value->value;
+ *rif_value = mlxsw_sp_rif_index(rif);
+ value->mapping_value = mlxsw_sp_rif_dev_ifindex(rif);
+ value->mapping_valid = true;
+
+ /* Set Match DIP */
+ value = &entry->match_values[MLXSW_SP_DPIPE_TABLE_HOST_MATCH_DIP];
+
+ dip_value = value->value;
+ *dip_value = dip;
+
+ /* Set Action DMAC */
+ value = entry->action_values;
+ ha_value = value->value;
+ ether_addr_copy(ha_value, ha);
+}
+
+static void
+mlxsw_sp_dpipe_table_host4_entry_fill(struct devlink_dpipe_entry *entry,
+ struct mlxsw_sp_neigh_entry *neigh_entry,
+ struct mlxsw_sp_rif *rif)
+{
+ unsigned char *ha;
+ u32 dip;
+
+ ha = mlxsw_sp_neigh_entry_ha(neigh_entry);
+ dip = mlxsw_sp_neigh4_entry_dip(neigh_entry);
+ __mlxsw_sp_dpipe_table_host4_entry_fill(entry, rif, ha, dip);
+}
+
+static void
+mlxsw_sp_dpipe_table_host_entry_fill(struct mlxsw_sp *mlxsw_sp,
+ struct devlink_dpipe_entry *entry,
+ struct mlxsw_sp_neigh_entry *neigh_entry,
+ struct mlxsw_sp_rif *rif,
+ int type)
+{
+ int err;
+
+ mlxsw_sp_dpipe_table_host4_entry_fill(entry, neigh_entry, rif);
+ err = mlxsw_sp_neigh_counter_get(mlxsw_sp, neigh_entry,
+ &entry->counter);
+ if (!err)
+ entry->counter_valid = true;
+}
+
+static int
+mlxsw_sp_dpipe_table_host_entries_get(struct mlxsw_sp *mlxsw_sp,
+ struct devlink_dpipe_entry *entry,
+ bool counters_enabled,
+ struct devlink_dpipe_dump_ctx *dump_ctx,
+ int type)
+{
+ int rif_neigh_count = 0;
+ int rif_neigh_skip = 0;
+ int neigh_count = 0;
+ int rif_count;
+ int i, j;
+ int err;
+
+ rtnl_lock();
+ i = 0;
+ rif_count = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS);
+start_again:
+ err = devlink_dpipe_entry_ctx_prepare(dump_ctx);
+ if (err)
+ goto err_ctx_prepare;
+ j = 0;
+ rif_neigh_skip = rif_neigh_count;
+ for (; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) {
+ struct mlxsw_sp_rif *rif = mlxsw_sp_rif_by_index(mlxsw_sp, i);
+ struct mlxsw_sp_neigh_entry *neigh_entry;
+
+ if (!rif)
+ continue;
+
+ rif_neigh_count = 0;
+ mlxsw_sp_rif_neigh_for_each(neigh_entry, rif) {
+ if (rif_neigh_count < rif_neigh_skip)
+ goto skip;
+
+ mlxsw_sp_dpipe_table_host_entry_fill(mlxsw_sp, entry,
+ neigh_entry, rif,
+ type);
+ entry->index = neigh_count;
+ err = devlink_dpipe_entry_ctx_append(dump_ctx, entry);
+ if (err) {
+ if (err == -EMSGSIZE) {
+ if (!j)
+ goto err_entry_append;
+ else
+ goto out;
+ }
+ goto err_entry_append;
+ }
+ neigh_count++;
+ j++;
+skip:
+ rif_neigh_count++;
+ }
+ rif_neigh_skip = 0;
+ }
+out:
+ devlink_dpipe_entry_ctx_close(dump_ctx);
+ if (i != rif_count)
+ goto start_again;
+
+ rtnl_unlock();
+ return 0;
+
+err_ctx_prepare:
+err_entry_append:
+ rtnl_unlock();
+ return err;
+}
+
+static int
+mlxsw_sp_dpipe_table_host_entries_dump(struct mlxsw_sp *mlxsw_sp,
+ bool counters_enabled,
+ struct devlink_dpipe_dump_ctx *dump_ctx,
+ int type)
+{
+ struct devlink_dpipe_value match_values[MLXSW_SP_DPIPE_TABLE_HOST_MATCH_COUNT];
+ struct devlink_dpipe_match matches[MLXSW_SP_DPIPE_TABLE_HOST_MATCH_COUNT];
+ struct devlink_dpipe_value action_value;
+ struct devlink_dpipe_action action = {0};
+ struct devlink_dpipe_entry entry = {0};
+ int err;
+
+ memset(matches, 0, MLXSW_SP_DPIPE_TABLE_HOST_MATCH_COUNT *
+ sizeof(matches[0]));
+ memset(match_values, 0, MLXSW_SP_DPIPE_TABLE_HOST_MATCH_COUNT *
+ sizeof(match_values[0]));
+ memset(&action_value, 0, sizeof(action_value));
+
+ mlxsw_sp_dpipe_table_host_match_action_prepare(matches, &action, type);
+ err = mlxsw_sp_dpipe_table_host_entry_prepare(&entry, match_values,
+ matches, &action_value,
+ &action, type);
+ if (err)
+ goto out;
+
+ err = mlxsw_sp_dpipe_table_host_entries_get(mlxsw_sp, &entry,
+ counters_enabled, dump_ctx,
+ type);
+out:
+ devlink_dpipe_entry_clear(&entry);
+ return err;
+}
+
+static int
+mlxsw_sp_dpipe_table_host4_entries_dump(void *priv, bool counters_enabled,
+ struct devlink_dpipe_dump_ctx *dump_ctx)
+{
+ struct mlxsw_sp *mlxsw_sp = priv;
+
+ return mlxsw_sp_dpipe_table_host_entries_dump(mlxsw_sp,
+ counters_enabled,
+ dump_ctx, AF_INET);
+}
+
static u64
mlxsw_sp_dpipe_table_host_size_get(struct mlxsw_sp *mlxsw_sp, int type)
{
@@ -387,6 +633,7 @@ static u64 mlxsw_sp_dpipe_table_host4_size_get(void *priv)
static struct devlink_dpipe_table_ops mlxsw_sp_host4_ops = {
.matches_dump = mlxsw_sp_dpipe_table_host4_matches_dump,
.actions_dump = mlxsw_sp_dpipe_table_host4_actions_dump,
+ .entries_dump = mlxsw_sp_dpipe_table_host4_entries_dump,
.size_get = mlxsw_sp_dpipe_table_host4_size_get,
};
--
2.9.3
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