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net/mlx5: E-Switch, Implement promiscuous rx modes vf request handling 

Add promisc_change as a trigger to vport context change event.
Add set vport promisc/allmulti functions to add vport to promiscuous
flowtable rules.
Upon promisc/allmulti rx mode vf request add the vport to
the relevant promiscuous group (Allmulti/Promisc group) so the relevant
traffic will be forwarded to it.
Upon allmulti vf request add the vport to each existing multicast fdb
rule.
Upon adding/removing mcast address from a vport, update all other
allmulti vports.

Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Mohamad Haj Yahia 2016-05-03 17:14:03 +03:00 committed by David S. Miller
parent 78a9199b71
commit a35f71f27a
2 changed files with 267 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

269
drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
View File

@ -77,16 +77,20 @@ struct vport_addr {
u8 action;
u32 vport;
struct mlx5_flow_rule *flow_rule; /* SRIOV only */
/* A flag indicating that mac was added due to mc promiscuous vport */
bool mc_promisc;
};
enum {
UC_ADDR_CHANGE = BIT(0),
MC_ADDR_CHANGE = BIT(1),
PROMISC_CHANGE = BIT(3),
};
/* Vport context events */
#define SRIOV_VPORT_EVENTS (UC_ADDR_CHANGE | \
MC_ADDR_CHANGE)
MC_ADDR_CHANGE | \
PROMISC_CHANGE)
static int arm_vport_context_events_cmd(struct mlx5_core_dev *dev, u16 vport,
u32 events_mask)
@ -116,6 +120,9 @@ static int arm_vport_context_events_cmd(struct mlx5_core_dev *dev, u16 vport,
if (events_mask & MC_ADDR_CHANGE)
MLX5_SET(nic_vport_context, nic_vport_ctx,
event_on_mc_address_change, 1);
if (events_mask & PROMISC_CHANGE)
MLX5_SET(nic_vport_context, nic_vport_ctx,
event_on_promisc_change, 1);
err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
if (err)
@ -323,18 +330,22 @@ static void del_l2_table_entry(struct mlx5_core_dev *dev, u32 index)
/* E-Switch FDB */
static struct mlx5_flow_rule *
__esw_fdb_set_vport_rule(struct mlx5_eswitch *esw, u32 vport,
__esw_fdb_set_vport_rule(struct mlx5_eswitch *esw, u32 vport, bool rx_rule,
u8 mac_c[ETH_ALEN], u8 mac_v[ETH_ALEN])
{
int match_header = (is_zero_ether_addr(mac_c) ? 0 :
MLX5_MATCH_OUTER_HEADERS);
struct mlx5_flow_rule *flow_rule = NULL;
struct mlx5_flow_destination dest;
void *mv_misc = NULL;
void *mc_misc = NULL;
u8 *dmac_v = NULL;
u8 *dmac_c = NULL;
u32 *match_v;
u32 *match_c;
if (rx_rule)
match_header |= MLX5_MATCH_MISC_PARAMETERS;
match_v = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);
match_c = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);
if (!match_v || !match_c) {
@ -347,11 +358,18 @@ __esw_fdb_set_vport_rule(struct mlx5_eswitch *esw, u32 vport,
dmac_c = MLX5_ADDR_OF(fte_match_param, match_c,
outer_headers.dmac_47_16);
if (match_header == MLX5_MATCH_OUTER_HEADERS) {
if (match_header & MLX5_MATCH_OUTER_HEADERS) {
ether_addr_copy(dmac_v, mac_v);
ether_addr_copy(dmac_c, mac_c);
}
if (match_header & MLX5_MATCH_MISC_PARAMETERS) {
mv_misc = MLX5_ADDR_OF(fte_match_param, match_v, misc_parameters);
mc_misc = MLX5_ADDR_OF(fte_match_param, match_c, misc_parameters);
MLX5_SET(fte_match_set_misc, mv_misc, source_port, UPLINK_VPORT);
MLX5_SET_TO_ONES(fte_match_set_misc, mc_misc, source_port);
}
dest.type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
dest.vport_num = vport;
@ -383,7 +401,31 @@ esw_fdb_set_vport_rule(struct mlx5_eswitch *esw, u8 mac[ETH_ALEN], u32 vport)
u8 mac_c[ETH_ALEN];
eth_broadcast_addr(mac_c);
return __esw_fdb_set_vport_rule(esw, vport, mac_c, mac);
return __esw_fdb_set_vport_rule(esw, vport, false, mac_c, mac);
}
static struct mlx5_flow_rule *
esw_fdb_set_vport_allmulti_rule(struct mlx5_eswitch *esw, u32 vport)
{
u8 mac_c[ETH_ALEN];
u8 mac_v[ETH_ALEN];
eth_zero_addr(mac_c);
eth_zero_addr(mac_v);
mac_c[0] = 0x01;
mac_v[0] = 0x01;
return __esw_fdb_set_vport_rule(esw, vport, false, mac_c, mac_v);
}
static struct mlx5_flow_rule *
esw_fdb_set_vport_promisc_rule(struct mlx5_eswitch *esw, u32 vport)
{
u8 mac_c[ETH_ALEN];
u8 mac_v[ETH_ALEN];
eth_zero_addr(mac_c);
eth_zero_addr(mac_v);
return __esw_fdb_set_vport_rule(esw, vport, true, mac_c, mac_v);
}
static int esw_create_fdb_table(struct mlx5_eswitch *esw, int nvports)
@ -574,6 +616,52 @@ static int esw_del_uc_addr(struct mlx5_eswitch *esw, struct vport_addr *vaddr)
return 0;
}
static void update_allmulti_vports(struct mlx5_eswitch *esw,
struct vport_addr *vaddr,
struct esw_mc_addr *esw_mc)
{
u8 *mac = vaddr->node.addr;
u32 vport_idx = 0;
for (vport_idx = 0; vport_idx < esw->total_vports; vport_idx++) {
struct mlx5_vport *vport = &esw->vports[vport_idx];
struct hlist_head *vport_hash = vport->mc_list;
struct vport_addr *iter_vaddr =
l2addr_hash_find(vport_hash,
mac,
struct vport_addr);
if (IS_ERR_OR_NULL(vport->allmulti_rule) ||
vaddr->vport == vport_idx)
continue;
switch (vaddr->action) {
case MLX5_ACTION_ADD:
if (iter_vaddr)
continue;
iter_vaddr = l2addr_hash_add(vport_hash, mac,
struct vport_addr,
GFP_KERNEL);
if (!iter_vaddr) {
esw_warn(esw->dev,
"ALL-MULTI: Failed to add MAC(%pM) to vport[%d] DB\n",
mac, vport_idx);
continue;
}
iter_vaddr->vport = vport_idx;
iter_vaddr->flow_rule =
esw_fdb_set_vport_rule(esw,
mac,
vport_idx);
break;
case MLX5_ACTION_DEL:
if (!iter_vaddr)
continue;
mlx5_del_flow_rule(iter_vaddr->flow_rule);
l2addr_hash_del(iter_vaddr);
break;
}
}
}
static int esw_add_mc_addr(struct mlx5_eswitch *esw, struct vport_addr *vaddr)
{
struct hlist_head *hash = esw->mc_table;
@ -594,8 +682,17 @@ static int esw_add_mc_addr(struct mlx5_eswitch *esw, struct vport_addr *vaddr)
esw_mc->uplink_rule = /* Forward MC MAC to Uplink */
esw_fdb_set_vport_rule(esw, mac, UPLINK_VPORT);
/* Add this multicast mac to all the mc promiscuous vports */
update_allmulti_vports(esw, vaddr, esw_mc);
add:
esw_mc->refcnt++;
/* If the multicast mac is added as a result of mc promiscuous vport,
* don't increment the multicast ref count
*/
if (!vaddr->mc_promisc)
esw_mc->refcnt++;
/* Forward MC MAC to vport */
vaddr->flow_rule = esw_fdb_set_vport_rule(esw, mac, vport);
esw_debug(esw->dev,
@ -631,9 +728,15 @@ static int esw_del_mc_addr(struct mlx5_eswitch *esw, struct vport_addr *vaddr)
mlx5_del_flow_rule(vaddr->flow_rule);
vaddr->flow_rule = NULL;
if (--esw_mc->refcnt)
/* If the multicast mac is added as a result of mc promiscuous vport,
* don't decrement the multicast ref count.
*/
if (vaddr->mc_promisc || (--esw_mc->refcnt > 0))
return 0;
/* Remove this multicast mac from all the mc promiscuous vports */
update_allmulti_vports(esw, vaddr, esw_mc);
if (esw_mc->uplink_rule)
mlx5_del_flow_rule(esw_mc->uplink_rule);
@ -726,6 +829,24 @@ static void esw_update_vport_addr_list(struct mlx5_eswitch *esw,
addr = l2addr_hash_find(hash, mac_list[i], struct vport_addr);
if (addr) {
addr->action = MLX5_ACTION_NONE;
/* If this mac was previously added because of allmulti
* promiscuous rx mode, its now converted to be original
* vport mac.
*/
if (addr->mc_promisc) {
struct esw_mc_addr *esw_mc =
l2addr_hash_find(esw->mc_table,
mac_list[i],
struct esw_mc_addr);
if (!esw_mc) {
esw_warn(esw->dev,
"Failed to MAC(%pM) in mcast DB\n",
mac_list[i]);
continue;
}
esw_mc->refcnt++;
addr->mc_promisc = false;
}
continue;
}
@ -744,6 +865,115 @@ out:
kfree(mac_list);
}
/* Sync vport UC/MC list from vport context
* Must be called after esw_update_vport_addr_list
*/
static void esw_update_vport_mc_promisc(struct mlx5_eswitch *esw, u32 vport_num)
{
struct mlx5_vport *vport = &esw->vports[vport_num];
struct l2addr_node *node;
struct vport_addr *addr;
struct hlist_head *hash;
struct hlist_node *tmp;
int hi;
hash = vport->mc_list;
for_each_l2hash_node(node, tmp, esw->mc_table, hi) {
u8 *mac = node->addr;
addr = l2addr_hash_find(hash, mac, struct vport_addr);
if (addr) {
if (addr->action == MLX5_ACTION_DEL)
addr->action = MLX5_ACTION_NONE;
continue;
}
addr = l2addr_hash_add(hash, mac, struct vport_addr,
GFP_KERNEL);
if (!addr) {
esw_warn(esw->dev,
"Failed to add allmulti MAC(%pM) to vport[%d] DB\n",
mac, vport_num);
continue;
}
addr->vport = vport_num;
addr->action = MLX5_ACTION_ADD;
addr->mc_promisc = true;
}
}
/* Apply vport rx mode to HW FDB table */
static void esw_apply_vport_rx_mode(struct mlx5_eswitch *esw, u32 vport_num,
bool promisc, bool mc_promisc)
{
struct esw_mc_addr *allmulti_addr = esw->mc_promisc;
struct mlx5_vport *vport = &esw->vports[vport_num];
if (IS_ERR_OR_NULL(vport->allmulti_rule) != mc_promisc)
goto promisc;
if (mc_promisc) {
vport->allmulti_rule =
esw_fdb_set_vport_allmulti_rule(esw, vport_num);
if (!allmulti_addr->uplink_rule)
allmulti_addr->uplink_rule =
esw_fdb_set_vport_allmulti_rule(esw,
UPLINK_VPORT);
allmulti_addr->refcnt++;
} else if (vport->allmulti_rule) {
mlx5_del_flow_rule(vport->allmulti_rule);
vport->allmulti_rule = NULL;
if (--allmulti_addr->refcnt > 0)
goto promisc;
if (allmulti_addr->uplink_rule)
mlx5_del_flow_rule(allmulti_addr->uplink_rule);
allmulti_addr->uplink_rule = NULL;
}
promisc:
if (IS_ERR_OR_NULL(vport->promisc_rule) != promisc)
return;
if (promisc) {
vport->promisc_rule = esw_fdb_set_vport_promisc_rule(esw,
vport_num);
} else if (vport->promisc_rule) {
mlx5_del_flow_rule(vport->promisc_rule);
vport->promisc_rule = NULL;
}
}
/* Sync vport rx mode from vport context */
static void esw_update_vport_rx_mode(struct mlx5_eswitch *esw, u32 vport_num)
{
struct mlx5_vport *vport = &esw->vports[vport_num];
int promisc_all = 0;
int promisc_uc = 0;
int promisc_mc = 0;
int err;
err = mlx5_query_nic_vport_promisc(esw->dev,
vport_num,
&promisc_uc,
&promisc_mc,
&promisc_all);
if (err)
return;
esw_debug(esw->dev, "vport[%d] context update rx mode promisc_all=%d, all_multi=%d\n",
vport_num, promisc_all, promisc_mc);
if (!vport->trusted || !vport->enabled) {
promisc_uc = 0;
promisc_mc = 0;
promisc_all = 0;
}
esw_apply_vport_rx_mode(esw, vport_num, promisc_all,
(promisc_all || promisc_mc));
}
static void esw_vport_change_handler(struct work_struct *work)
{
struct mlx5_vport *vport =
@ -766,6 +996,15 @@ static void esw_vport_change_handler(struct work_struct *work)
if (vport->enabled_events & MC_ADDR_CHANGE) {
esw_update_vport_addr_list(esw, vport->vport,
MLX5_NVPRT_LIST_TYPE_MC);
}
if (vport->enabled_events & PROMISC_CHANGE) {
esw_update_vport_rx_mode(esw, vport->vport);
if (!IS_ERR_OR_NULL(vport->allmulti_rule))
esw_update_vport_mc_promisc(esw, vport->vport);
}
if (vport->enabled_events & (PROMISC_CHANGE | MC_ADDR_CHANGE)) {
esw_apply_vport_addr_list(esw, vport->vport,
MLX5_NVPRT_LIST_TYPE_MC);
}
@ -1247,6 +1486,9 @@ static void esw_enable_vport(struct mlx5_eswitch *esw, int vport_num,
vport->enabled = true;
/* only PF is trusted by default */
vport->trusted = (vport_num) ? false : true;
arm_vport_context_events_cmd(esw->dev, vport_num, enable_events);
esw->enabled_vports++;
@ -1334,6 +1576,7 @@ abort:
void mlx5_eswitch_disable_sriov(struct mlx5_eswitch *esw)
{
struct esw_mc_addr *mc_promisc;
int i;
if (!esw || !MLX5_CAP_GEN(esw->dev, vport_group_manager) ||
@ -1343,9 +1586,14 @@ void mlx5_eswitch_disable_sriov(struct mlx5_eswitch *esw)
esw_info(esw->dev, "disable SRIOV: active vports(%d)\n",
esw->enabled_vports);
mc_promisc = esw->mc_promisc;
for (i = 0; i < esw->total_vports; i++)
esw_disable_vport(esw, i);
if (mc_promisc && mc_promisc->uplink_rule)
mlx5_del_flow_rule(mc_promisc->uplink_rule);
esw_destroy_fdb_table(esw);
/* VPORT 0 (PF) must be enabled back with non-sriov configuration */
@ -1356,6 +1604,7 @@ int mlx5_eswitch_init(struct mlx5_core_dev *dev)
{
int l2_table_size = 1 << MLX5_CAP_GEN(dev, log_max_l2_table);
int total_vports = MLX5_TOTAL_VPORTS(dev);
struct esw_mc_addr *mc_promisc;
struct mlx5_eswitch *esw;
int vport_num;
int err;
@ -1384,6 +1633,13 @@ int mlx5_eswitch_init(struct mlx5_core_dev *dev)
}
esw->l2_table.size = l2_table_size;
mc_promisc = kzalloc(sizeof(*mc_promisc), GFP_KERNEL);
if (!mc_promisc) {
err = -ENOMEM;
goto abort;
}
esw->mc_promisc = mc_promisc;
esw->work_queue = create_singlethread_workqueue("mlx5_esw_wq");
if (!esw->work_queue) {
err = -ENOMEM;
@ -1436,6 +1692,7 @@ void mlx5_eswitch_cleanup(struct mlx5_eswitch *esw)
esw->dev->priv.eswitch = NULL;
destroy_workqueue(esw->work_queue);
kfree(esw->l2_table.bitmap);
kfree(esw->mc_promisc);
kfree(esw->vports);
kfree(esw);
}

4
drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
View File

@ -111,6 +111,8 @@ struct mlx5_vport {
int vport;
struct hlist_head uc_list[MLX5_L2_ADDR_HASH_SIZE];
struct hlist_head mc_list[MLX5_L2_ADDR_HASH_SIZE];
struct mlx5_flow_rule *promisc_rule;
struct mlx5_flow_rule *allmulti_rule;
struct work_struct vport_change_handler;
struct vport_ingress ingress;
@ -119,6 +121,7 @@ struct mlx5_vport {
u16 vlan;
u8 qos;
bool spoofchk;
bool trusted;
bool enabled;
u16 enabled_events;
};
@ -149,6 +152,7 @@ struct mlx5_eswitch {
* and async SRIOV admin state changes
*/
struct mutex state_lock;
struct esw_mc_addr *mc_promisc;
};
/* E-Switch API */