From: John Daley Date: Wed, 4 Apr 2018 23:54:52 +0000 (-0700) Subject: net/enic: support UDP RSS on 1400 series adapters X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=9bd04182bb01da907abfcd630b5e5a4160ff728a;p=dpdk.git net/enic: support UDP RSS on 1400 series adapters Recent models support IPv4/IPv6 UDP RSS. There is no control bit to enable UDP RSS alone. Instead, the NIC enables/disables TCP and UDP RSS together. Signed-off-by: John Daley Reviewed-by: Hyong Youb Kim --- diff --git a/doc/guides/nics/enic.rst b/doc/guides/nics/enic.rst index 0bc55936a3..bbf18ac826 100644 --- a/doc/guides/nics/enic.rst +++ b/doc/guides/nics/enic.rst @@ -369,6 +369,7 @@ Supported features - VLAN filtering (supported via UCSM/CIMC only) - Execution of application by unprivileged system users - IPV4, IPV6 and TCP RSS hashing +- UDP hashing (1400 series and later adapters) - Scattered Rx - MTU update - SR-IOV on UCS managed servers connected to Fabric Interconnects @@ -382,7 +383,6 @@ Known bugs and unsupported features in this release - VLAN based flow direction - Non-IPV4 flow direction - Setting of extended VLAN -- UDP RSS hashing - MTU update only works if Scattered Rx mode is disabled - Maximum receive packet length is ignored if Scattered Rx mode is used diff --git a/drivers/net/enic/base/vnic_dev.c b/drivers/net/enic/base/vnic_dev.c index 1f8d222fc9..eccbb30081 100644 --- a/drivers/net/enic/base/vnic_dev.c +++ b/drivers/net/enic/base/vnic_dev.c @@ -10,6 +10,7 @@ #include "vnic_dev.h" #include "vnic_resource.h" #include "vnic_devcmd.h" +#include "vnic_nic.h" #include "vnic_stats.h" @@ -531,6 +532,23 @@ parse_max_level: return 0; } +int vnic_dev_capable_udp_rss(struct vnic_dev *vdev) +{ + u64 a0 = CMD_NIC_CFG, a1 = 0; + u64 rss_hash_type; + int wait = 1000; + int err; + + err = vnic_dev_cmd(vdev, CMD_CAPABILITY, &a0, &a1, wait); + if (err) + return 0; + if (a0 == 0) + return 0; + rss_hash_type = (a1 >> NIC_CFG_RSS_HASH_TYPE_SHIFT) & + NIC_CFG_RSS_HASH_TYPE_MASK_FIELD; + return ((rss_hash_type & NIC_CFG_RSS_HASH_TYPE_UDP) ? 1 : 0); +} + int vnic_dev_capable(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd) { u64 a0 = (u32)cmd, a1 = 0; diff --git a/drivers/net/enic/base/vnic_dev.h b/drivers/net/enic/base/vnic_dev.h index 7e5736b4da..fb3dd3ccb5 100644 --- a/drivers/net/enic/base/vnic_dev.h +++ b/drivers/net/enic/base/vnic_dev.h @@ -109,6 +109,7 @@ int vnic_dev_capable_adv_filters(struct vnic_dev *vdev); int vnic_dev_capable(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd); int vnic_dev_capable_filter_mode(struct vnic_dev *vdev, u32 *mode, u8 *filter_tags); +int vnic_dev_capable_udp_rss(struct vnic_dev *vdev); int vnic_dev_asic_info(struct vnic_dev *vdev, u16 *asic_type, u16 *asic_rev); int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset, size_t size, void *value); diff --git a/drivers/net/enic/base/vnic_nic.h b/drivers/net/enic/base/vnic_nic.h index a753b3a5aa..b20915e762 100644 --- a/drivers/net/enic/base/vnic_nic.h +++ b/drivers/net/enic/base/vnic_nic.h @@ -33,6 +33,7 @@ #define NIC_CFG_RSS_HASH_TYPE_TCP_IPV6 (1 << 4) #define NIC_CFG_RSS_HASH_TYPE_IPV6_EX (1 << 5) #define NIC_CFG_RSS_HASH_TYPE_TCP_IPV6_EX (1 << 6) +#define NIC_CFG_RSS_HASH_TYPE_UDP (1 << 7) static inline void vnic_set_nic_cfg(u32 *nic_cfg, u8 rss_default_cpu, u8 rss_hash_type, diff --git a/drivers/net/enic/enic_main.c b/drivers/net/enic/enic_main.c index aaada8864b..d15d236f7f 100644 --- a/drivers/net/enic/enic_main.c +++ b/drivers/net/enic/enic_main.c @@ -1174,10 +1174,22 @@ int enic_set_rss_conf(struct enic *enic, struct rte_eth_rss_conf *rss_conf) rss_hash_type |= NIC_CFG_RSS_HASH_TYPE_IPV4; if (rss_hf & ETH_RSS_NONFRAG_IPV4_TCP) rss_hash_type |= NIC_CFG_RSS_HASH_TYPE_TCP_IPV4; + if (rss_hf & ETH_RSS_NONFRAG_IPV4_UDP) { + /* + * 'TCP' is not a typo. HW does not have a separate + * enable bit for UDP RSS. The TCP bit enables both TCP + * and UDP RSS.. + */ + rss_hash_type |= NIC_CFG_RSS_HASH_TYPE_TCP_IPV4; + } if (rss_hf & ETH_RSS_IPV6) rss_hash_type |= NIC_CFG_RSS_HASH_TYPE_IPV6; if (rss_hf & ETH_RSS_NONFRAG_IPV6_TCP) rss_hash_type |= NIC_CFG_RSS_HASH_TYPE_TCP_IPV6; + if (rss_hf & ETH_RSS_NONFRAG_IPV6_UDP) { + /* Again, 'TCP' is not a typo. */ + rss_hash_type |= NIC_CFG_RSS_HASH_TYPE_TCP_IPV6; + } if (rss_hf & ETH_RSS_IPV6_EX) rss_hash_type |= NIC_CFG_RSS_HASH_TYPE_IPV6_EX; if (rss_hf & ETH_RSS_IPV6_TCP_EX) diff --git a/drivers/net/enic/enic_res.c b/drivers/net/enic/enic_res.c index e7ad6767e4..abe6929e17 100644 --- a/drivers/net/enic/enic_res.c +++ b/drivers/net/enic/enic_res.c @@ -144,6 +144,11 @@ int enic_get_vnic_config(struct enic *enic) enic->flow_type_rss_offloads |= ETH_RSS_IPV6_EX; if (ENIC_SETTING(enic, RSSHASH_TCPIPV6_EX)) enic->flow_type_rss_offloads |= ETH_RSS_IPV6_TCP_EX; + if (vnic_dev_capable_udp_rss(enic->vdev)) { + enic->flow_type_rss_offloads |= + ETH_RSS_NONFRAG_IPV4_UDP | ETH_RSS_NONFRAG_IPV6_UDP; + } + /* Zero offloads if RSS is not enabled */ if (!ENIC_SETTING(enic, RSS)) enic->flow_type_rss_offloads = 0;