[dpdk-dev] [PATCH v2 07/16] mlx5: use alternate method to configure promisc and allmulti modes
Adrien Mazarguil
adrien.mazarguil at 6wind.com
Fri Oct 30 19:55:10 CET 2015
From: Olga Shern <olgas at mellanox.com>
Promiscuous and allmulticast modes were historically enabled by adding
specific flows with types IBV_FLOW_ATTR_ALL_DEFAULT or
IBV_EXP_FLOW_ATTR_MC_DEFAULT to each hash RX queue, but this method is
deprecated.
- Promiscuous mode is now enabled by omitting destination MAC addresses from
basic flow specifications.
- Allmulticast mode is now enabled by using flow specifications that match
the broadcast bit in destination MAC addresses.
Signed-off-by: Olga Shern <olgas at mellanox.com>
Signed-off-by: Adrien Mazarguil <adrien.mazarguil at 6wind.com>
Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro at 6wind.com>
Signed-off-by: Yaacov Hazan <yaacovh at mellanox.com>
---
drivers/net/mlx5/mlx5_rxmode.c | 44 +++++++++++++++++++++++++-----------------
1 file changed, 26 insertions(+), 18 deletions(-)
diff --git a/drivers/net/mlx5/mlx5_rxmode.c b/drivers/net/mlx5/mlx5_rxmode.c
index 79e31fb..7794608 100644
--- a/drivers/net/mlx5/mlx5_rxmode.c
+++ b/drivers/net/mlx5/mlx5_rxmode.c
@@ -74,20 +74,17 @@ static int
hash_rxq_promiscuous_enable(struct hash_rxq *hash_rxq)
{
struct ibv_flow *flow;
- struct ibv_flow_attr attr = {
- .type = IBV_FLOW_ATTR_ALL_DEFAULT,
- .num_of_specs = 0,
- .port = hash_rxq->priv->port,
- .flags = 0
- };
+ FLOW_ATTR_SPEC_ETH(data, hash_rxq_flow_attr(hash_rxq, NULL, 0));
+ struct ibv_flow_attr *attr = &data->attr;
- if (hash_rxq->priv->vf)
- return 0;
if (hash_rxq->promisc_flow != NULL)
return 0;
DEBUG("%p: enabling promiscuous mode", (void *)hash_rxq);
+ /* Promiscuous flows only differ from normal flows by not filtering
+ * on specific MAC addresses. */
+ hash_rxq_flow_attr(hash_rxq, attr, sizeof(data));
errno = 0;
- flow = ibv_create_flow(hash_rxq->qp, &attr);
+ flow = ibv_create_flow(hash_rxq->qp, attr);
if (flow == NULL) {
/* It's not clear whether errno is always set in this case. */
ERROR("%p: flow configuration failed, errno=%d: %s",
@@ -162,8 +159,6 @@ mlx5_promiscuous_enable(struct rte_eth_dev *dev)
static void
hash_rxq_promiscuous_disable(struct hash_rxq *hash_rxq)
{
- if (hash_rxq->priv->vf)
- return;
if (hash_rxq->promisc_flow == NULL)
return;
DEBUG("%p: disabling promiscuous mode", (void *)hash_rxq);
@@ -217,18 +212,31 @@ static int
hash_rxq_allmulticast_enable(struct hash_rxq *hash_rxq)
{
struct ibv_flow *flow;
- struct ibv_flow_attr attr = {
- .type = IBV_FLOW_ATTR_MC_DEFAULT,
- .num_of_specs = 0,
- .port = hash_rxq->priv->port,
- .flags = 0
- };
+ FLOW_ATTR_SPEC_ETH(data, hash_rxq_flow_attr(hash_rxq, NULL, 0));
+ struct ibv_flow_attr *attr = &data->attr;
+ struct ibv_flow_spec_eth *spec = &data->spec;
if (hash_rxq->allmulti_flow != NULL)
return 0;
DEBUG("%p: enabling allmulticast mode", (void *)hash_rxq);
+ /*
+ * No padding must be inserted by the compiler between attr and spec.
+ * This layout is expected by libibverbs.
+ */
+ assert(((uint8_t *)attr + sizeof(*attr)) == (uint8_t *)spec);
+ hash_rxq_flow_attr(hash_rxq, attr, sizeof(data));
+ *spec = (struct ibv_flow_spec_eth){
+ .type = IBV_FLOW_SPEC_ETH,
+ .size = sizeof(*spec),
+ .val = {
+ .dst_mac = "\x01\x00\x00\x00\x00\x00",
+ },
+ .mask = {
+ .dst_mac = "\x01\x00\x00\x00\x00\x00",
+ },
+ };
errno = 0;
- flow = ibv_create_flow(hash_rxq->qp, &attr);
+ flow = ibv_create_flow(hash_rxq->qp, attr);
if (flow == NULL) {
/* It's not clear whether errno is always set in this case. */
ERROR("%p: flow configuration failed, errno=%d: %s",
--
2.1.0
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