[dpdk-dev,v4,2/2] net/mlx4: advertise supported RSS hash functions
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Commit Message
Advertise mlx4 supported RSS functions as part of dev_infos_get
callback.
Previous to this commit RSS support was reported as none. Since the
introduction of [1] it is required that all RSS configurations will be
verified.
[1] commit 8863a1fbfc66 ("ethdev: add supported hash function check")
Signed-off-by: Ophir Munk <ophirmu@mellanox.com>
---
drivers/net/mlx4/mlx4_ethdev.c | 12 ++++++-----
drivers/net/mlx4/mlx4_flow.c | 45 ++++++++++++++++++++++++++++++++++++++++++
drivers/net/mlx4/mlx4_flow.h | 35 ++++++++++++++++++++++++++++++++
3 files changed, 87 insertions(+), 5 deletions(-)
Comments
13/05/2018 17:39, Ophir Munk:
> info->speed_capa =
> - ETH_LINK_SPEED_1G |
> - ETH_LINK_SPEED_10G |
> - ETH_LINK_SPEED_20G |
> - ETH_LINK_SPEED_40G |
> - ETH_LINK_SPEED_56G;
> + ETH_LINK_SPEED_1G |
> + ETH_LINK_SPEED_10G |
> + ETH_LINK_SPEED_20G |
> + ETH_LINK_SPEED_40G |
> + ETH_LINK_SPEED_56G;
Not sure why you re-indent.
For info, line continuation in control statements must be done with 2 tabs:
http://dpdk.org/doc/guides/contributing/coding_style.html#general
In this case, it is not a control statement, so I guess 1 or 2 tabs
can be accepted.
Shahaf asked for it in his review
> -----Original Message-----
> From: Thomas Monjalon [mailto:thomas@monjalon.net]
> Sent: Sunday, May 13, 2018 7:13 PM
> To: Ophir Munk <ophirmu@mellanox.com>
> Cc: dev@dpdk.org; Adrien Mazarguil <adrien.mazarguil@6wind.com>; Olga
> Shern <olgas@mellanox.com>; Shahaf Shuler <shahafs@mellanox.com>
> Subject: Re: [PATCH v4 2/2] net/mlx4: advertise supported RSS hash
> functions
>
> 13/05/2018 17:39, Ophir Munk:
> > info->speed_capa =
> > - ETH_LINK_SPEED_1G |
> > - ETH_LINK_SPEED_10G |
> > - ETH_LINK_SPEED_20G |
> > - ETH_LINK_SPEED_40G |
> > - ETH_LINK_SPEED_56G;
> > + ETH_LINK_SPEED_1G |
> > + ETH_LINK_SPEED_10G |
> > + ETH_LINK_SPEED_20G |
> > + ETH_LINK_SPEED_40G |
> > + ETH_LINK_SPEED_56G;
>
> Not sure why you re-indent.
> For info, line continuation in control statements must be done with 2 tabs:
> https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F
> %2Fdpdk.org%2Fdoc%2Fguides%2Fcontributing%2Fcoding_style.html%23ge
> neral&data=02%7C01%7Cophirmu%40mellanox.com%7C521136e06b61475a
> 99c308d5b8ec58fa%7Ca652971c7d2e4d9ba6a4d149256f461b%7C0%7C0%7
> C636618247609249241&sdata=GkEBudFg9ukUbGM9Wi%2F84vT%2FQRv3qX
> KuT%2BiFN0ziVjc%3D&reserved=0
> In this case, it is not a control statement, so I guess 1 or 2 tabs can be
> accepted.
>
Anyway will update in v5 to be sent now
> -----Original Message-----
> From: Ophir Munk
> Sent: Sunday, May 13, 2018 7:14 PM
> To: Thomas Monjalon <thomas@monjalon.net>
> Cc: dev@dpdk.org; Adrien Mazarguil <adrien.mazarguil@6wind.com>; Olga
> Shern <olgas@mellanox.com>; Shahaf Shuler <shahafs@mellanox.com>
> Subject: RE: [PATCH v4 2/2] net/mlx4: advertise supported RSS hash
> functions
>
> Shahaf asked for it in his review
>
> > -----Original Message-----
> > From: Thomas Monjalon [mailto:thomas@monjalon.net]
> > Sent: Sunday, May 13, 2018 7:13 PM
> > To: Ophir Munk <ophirmu@mellanox.com>
> > Cc: dev@dpdk.org; Adrien Mazarguil <adrien.mazarguil@6wind.com>; Olga
> > Shern <olgas@mellanox.com>; Shahaf Shuler <shahafs@mellanox.com>
> > Subject: Re: [PATCH v4 2/2] net/mlx4: advertise supported RSS hash
> > functions
> >
> > 13/05/2018 17:39, Ophir Munk:
> > > info->speed_capa =
> > > - ETH_LINK_SPEED_1G |
> > > - ETH_LINK_SPEED_10G |
> > > - ETH_LINK_SPEED_20G |
> > > - ETH_LINK_SPEED_40G |
> > > - ETH_LINK_SPEED_56G;
> > > + ETH_LINK_SPEED_1G |
> > > + ETH_LINK_SPEED_10G |
> > > + ETH_LINK_SPEED_20G |
> > > + ETH_LINK_SPEED_40G |
> > > + ETH_LINK_SPEED_56G;
> >
> > Not sure why you re-indent.
> > For info, line continuation in control statements must be done with 2 tabs:
> > https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F
> >
> %2Fdpdk.org%2Fdoc%2Fguides%2Fcontributing%2Fcoding_style.html%23ge
> >
> neral&data=02%7C01%7Cophirmu%40mellanox.com%7C521136e06b61475a
> >
> 99c308d5b8ec58fa%7Ca652971c7d2e4d9ba6a4d149256f461b%7C0%7C0%7
> >
> C636618247609249241&sdata=GkEBudFg9ukUbGM9Wi%2F84vT%2FQRv3qX
> > KuT%2BiFN0ziVjc%3D&reserved=0
> > In this case, it is not a control statement, so I guess 1 or 2 tabs
> > can be accepted.
> >
@@ -582,11 +582,13 @@ mlx4_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
info->if_index = if_nametoindex(ifname);
info->hash_key_size = MLX4_RSS_HASH_KEY_SIZE;
info->speed_capa =
- ETH_LINK_SPEED_1G |
- ETH_LINK_SPEED_10G |
- ETH_LINK_SPEED_20G |
- ETH_LINK_SPEED_40G |
- ETH_LINK_SPEED_56G;
+ ETH_LINK_SPEED_1G |
+ ETH_LINK_SPEED_10G |
+ ETH_LINK_SPEED_20G |
+ ETH_LINK_SPEED_40G |
+ ETH_LINK_SPEED_56G;
+ info->flow_type_rss_offloads =
+ mlx4_ibv_to_rss_types(priv->hw_rss_sup);
}
/**
@@ -139,6 +139,51 @@ mlx4_conv_rss_types(struct priv *priv, uint64_t types)
}
/**
+ * Convert verbs RSS types to their DPDK equivalents.
+ *
+ * This function returns a group of RSS DPDK types given their equivalent group
+ * of verbs types.
+ * For example both source IPv4 and destination IPv4 verbs types are converted
+ * into their equivalent RSS group types. If each of these verbs types existed
+ * exclusively - no conversion would take place.
+ *
+ * @param types
+ * RSS hash types in verbs format.
+ *
+ * @return
+ * DPDK RSS hash fields supported by mlx4.
+ */
+uint64_t
+mlx4_ibv_to_rss_types(uint64_t types)
+{
+ enum { IPV4, IPV6, IPV4_TCP, IPV6_TCP, IPV4_UDP, IPV6_UDP};
+
+ static const uint64_t in[] = {
+ [IPV4] = IPV4_IBV_HF,
+ [IPV6] = IPV6_IBV_HF,
+ [IPV4_TCP] = IPV4_IBV_HF | TCP_IBV_HF,
+ [IPV6_TCP] = IPV6_IBV_HF | TCP_IBV_HF,
+ [IPV4_UDP] = IPV4_IBV_HF | UDP_IBV_HF,
+ [IPV6_UDP] = IPV6_IBV_HF | UDP_IBV_HF,
+ };
+ static const uint64_t out[RTE_DIM(in)] = {
+ [IPV4] = IPV4_RSS_HF,
+ [IPV6] = IPV6_RSS_HF,
+ [IPV4_TCP] = IPV4_RSS_HF | IPV4_TCP_RSS_HF,
+ [IPV6_TCP] = IPV6_RSS_HF | IPV6_TCP_RSS_HF,
+ [IPV4_UDP] = IPV4_RSS_HF | IPV4_UDP_RSS_HF,
+ [IPV6_UDP] = IPV6_RSS_HF | IPV6_UDP_RSS_HF,
+ };
+ uint64_t conv = 0;
+ unsigned int i;
+
+ for (i = 0; i != RTE_DIM(in); ++i)
+ if ((types & in[i]) == in[i])
+ conv |= out[i];
+ return conv;
+}
+
+/**
* Merge Ethernet pattern item into flow rule handle.
*
* Additional mlx4-specific constraints on supported fields:
@@ -30,6 +30,40 @@
/** Meta pattern item used to distinguish internal rules. */
#define MLX4_FLOW_ITEM_TYPE_INTERNAL ((enum rte_flow_item_type)-1)
+/** IBV supported RSS hash functions combinations */
+#define IPV4_IBV_HF ( \
+ IBV_RX_HASH_SRC_IPV4 | \
+ IBV_RX_HASH_DST_IPV4)
+#define IPV6_IBV_HF ( \
+ IBV_RX_HASH_SRC_IPV6 | \
+ IBV_RX_HASH_DST_IPV6)
+#define TCP_IBV_HF ( \
+ IBV_RX_HASH_SRC_PORT_TCP | \
+ IBV_RX_HASH_DST_PORT_TCP)
+#define UDP_IBV_HF (IBV_RX_HASH_SRC_PORT_UDP | \
+ IBV_RX_HASH_DST_PORT_UDP)
+
+/** Supported RSS hash functions combinations */
+#define IPV4_RSS_HF ( \
+ ETH_RSS_IPV4 | \
+ ETH_RSS_FRAG_IPV4 | \
+ ETH_RSS_NONFRAG_IPV4_OTHER)
+#define IPV6_RSS_HF ( \
+ ETH_RSS_IPV6 | \
+ ETH_RSS_FRAG_IPV6 | \
+ ETH_RSS_NONFRAG_IPV6_OTHER | \
+ ETH_RSS_IPV6_EX)
+#define IPV4_TCP_RSS_HF ( \
+ ETH_RSS_NONFRAG_IPV4_TCP)
+#define IPV6_TCP_RSS_HF ( \
+ ETH_RSS_NONFRAG_IPV6_TCP | \
+ ETH_RSS_IPV6_TCP_EX)
+#define IPV4_UDP_RSS_HF ( \
+ ETH_RSS_NONFRAG_IPV4_UDP)
+#define IPV6_UDP_RSS_HF ( \
+ ETH_RSS_NONFRAG_IPV6_UDP | \
+ ETH_RSS_IPV6_UDP_EX)
+
/** PMD-specific (mlx4) definition of a flow rule handle. */
struct rte_flow {
LIST_ENTRY(rte_flow) next; /**< Pointer to the next flow structure. */
@@ -49,6 +83,7 @@ struct rte_flow {
/* mlx4_flow.c */
uint64_t mlx4_conv_rss_types(struct priv *priv, uint64_t rss_hf);
+uint64_t mlx4_ibv_to_rss_types(uint64_t ibv_rss_types);
int mlx4_flow_sync(struct priv *priv, struct rte_flow_error *error);
void mlx4_flow_clean(struct priv *priv);
int mlx4_filter_ctrl(struct rte_eth_dev *dev,