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net/mlx5: add parameter for Netlink support in VF

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All Netlink request the PMD will do can also be done by a iproute2 command
line interface, enabling VF behavior configuration without having to modify
the application nor reaching PMD limits (e.g. MAC address number limit).

Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
This commit is contained in:
Nélio Laranjeiro 2018-04-05 17:07:21 +02:00 committed by Ferruh Yigit
parent dd4bb90bc3
commit db209cc32a
3 changed files with 18 additions and 1 deletions
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9
doc/guides/nics/mlx5.rst
View File

@ -318,6 +318,15 @@ Run-time configuration
Enabled by default.
- ``vf_nl_en`` parameter [int]
A nonzero value enables Netlink requests from the VF to add/remove MAC
addresses or/and enable/disable promiscuous/all multicast on the Netdevice.
Otherwise the relevant configuration must be run with Linux iproute2 tools.
This is a prerequisite to receive this kind of traffic.
Enabled by default, valid only on VF devices ignored otherwise.
Prerequisites
-------------

9
drivers/net/mlx5/mlx5.c
View File

@ -69,6 +69,9 @@
/* Device parameter to enable hardware Rx vector. */
#define MLX5_RX_VEC_EN "rx_vec_en"
/* Activate Netlink support in VF mode. */
#define MLX5_VF_NL_EN "vf_nl_en"
#ifndef HAVE_IBV_MLX5_MOD_MPW
#define MLX5DV_CONTEXT_FLAGS_MPW_ALLOWED (1 << 2)
#define MLX5DV_CONTEXT_FLAGS_ENHANCED_MPW (1 << 3)
@ -412,6 +415,8 @@ mlx5_args_check(const char *key, const char *val, void *opaque)
config->tx_vec_en = !!tmp;
} else if (strcmp(MLX5_RX_VEC_EN, key) == 0) {
config->rx_vec_en = !!tmp;
} else if (strcmp(MLX5_VF_NL_EN, key) == 0) {
config->vf_nl_en = !!tmp;
} else {
DRV_LOG(WARNING, "%s: unknown parameter", key);
rte_errno = EINVAL;
@ -443,6 +448,7 @@ mlx5_args(struct mlx5_dev_config *config, struct rte_devargs *devargs)
MLX5_TXQ_MAX_INLINE_LEN,
MLX5_TX_VEC_EN,
MLX5_RX_VEC_EN,
MLX5_VF_NL_EN,
NULL,
};
struct rte_kvargs *kvlist;
@ -754,6 +760,7 @@ mlx5_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
.txq_inline = MLX5_ARG_UNSET,
.txqs_inline = MLX5_ARG_UNSET,
.inline_max_packet_sz = MLX5_ARG_UNSET,
.vf_nl_en = 1,
};
len = snprintf(name, sizeof(name), PCI_PRI_FMT,
@ -970,7 +977,7 @@ mlx5_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
claim_zero(mlx5_mac_addr_add(eth_dev, &mac, 0, 0));
priv->nl_socket = -1;
priv->nl_sn = 0;
if (vf) {
if (vf && config.vf_nl_en) {
priv->nl_socket = mlx5_nl_init(RTMGRP_LINK);
if (priv->nl_socket < 0)
priv->nl_socket = -1;

1
drivers/net/mlx5/mlx5.h
View File

@ -88,6 +88,7 @@ struct mlx5_dev_config {
unsigned int tx_vec_en:1; /* Tx vector is enabled. */
unsigned int rx_vec_en:1; /* Rx vector is enabled. */
unsigned int mpw_hdr_dseg:1; /* Enable DSEGs in the title WQEBB. */
unsigned int vf_nl_en:1; /* Enable Netlink requests in VF mode. */
unsigned int tso_max_payload_sz; /* Maximum TCP payload for TSO. */
unsigned int ind_table_max_size; /* Maximum indirection table size. */
int txq_inline; /* Maximum packet size for inlining. */