diff options
Diffstat (limited to 'drivers/net/ethernet/intel/iavf/iavf_adv_rss.c')
| -rw-r--r-- | drivers/net/ethernet/intel/iavf/iavf_adv_rss.c | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/iavf/iavf_adv_rss.c b/drivers/net/ethernet/intel/iavf/iavf_adv_rss.c new file mode 100644 index 000000000..6edbf134b --- /dev/null +++ b/drivers/net/ethernet/intel/iavf/iavf_adv_rss.c @@ -0,0 +1,218 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2021, Intel Corporation. */ + +/* advanced RSS configuration ethtool support for iavf */ + +#include "iavf.h" + +/** + * iavf_fill_adv_rss_ip4_hdr - fill the IPv4 RSS protocol header + * @hdr: the virtchnl message protocol header data structure + * @hash_flds: the RSS configuration protocol hash fields + */ +static void +iavf_fill_adv_rss_ip4_hdr(struct virtchnl_proto_hdr *hdr, u64 hash_flds) +{ + VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, IPV4); + + if (hash_flds & IAVF_ADV_RSS_HASH_FLD_IPV4_SA) + VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV4, SRC); + + if (hash_flds & IAVF_ADV_RSS_HASH_FLD_IPV4_DA) + VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV4, DST); +} + +/** + * iavf_fill_adv_rss_ip6_hdr - fill the IPv6 RSS protocol header + * @hdr: the virtchnl message protocol header data structure + * @hash_flds: the RSS configuration protocol hash fields + */ +static void +iavf_fill_adv_rss_ip6_hdr(struct virtchnl_proto_hdr *hdr, u64 hash_flds) +{ + VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, IPV6); + + if (hash_flds & IAVF_ADV_RSS_HASH_FLD_IPV6_SA) + VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV6, SRC); + + if (hash_flds & IAVF_ADV_RSS_HASH_FLD_IPV6_DA) + VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV6, DST); +} + +/** + * iavf_fill_adv_rss_tcp_hdr - fill the TCP RSS protocol header + * @hdr: the virtchnl message protocol header data structure + * @hash_flds: the RSS configuration protocol hash fields + */ +static void +iavf_fill_adv_rss_tcp_hdr(struct virtchnl_proto_hdr *hdr, u64 hash_flds) +{ + VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, TCP); + + if (hash_flds & IAVF_ADV_RSS_HASH_FLD_TCP_SRC_PORT) + VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, TCP, SRC_PORT); + + if (hash_flds & IAVF_ADV_RSS_HASH_FLD_TCP_DST_PORT) + VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, TCP, DST_PORT); +} + +/** + * iavf_fill_adv_rss_udp_hdr - fill the UDP RSS protocol header + * @hdr: the virtchnl message protocol header data structure + * @hash_flds: the RSS configuration protocol hash fields + */ +static void +iavf_fill_adv_rss_udp_hdr(struct virtchnl_proto_hdr *hdr, u64 hash_flds) +{ + VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, UDP); + + if (hash_flds & IAVF_ADV_RSS_HASH_FLD_UDP_SRC_PORT) + VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, UDP, SRC_PORT); + + if (hash_flds & IAVF_ADV_RSS_HASH_FLD_UDP_DST_PORT) + VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, UDP, DST_PORT); +} + +/** + * iavf_fill_adv_rss_sctp_hdr - fill the SCTP RSS protocol header + * @hdr: the virtchnl message protocol header data structure + * @hash_flds: the RSS configuration protocol hash fields + */ +static void +iavf_fill_adv_rss_sctp_hdr(struct virtchnl_proto_hdr *hdr, u64 hash_flds) +{ + VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, SCTP); + + if (hash_flds & IAVF_ADV_RSS_HASH_FLD_SCTP_SRC_PORT) + VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, SCTP, SRC_PORT); + + if (hash_flds & IAVF_ADV_RSS_HASH_FLD_SCTP_DST_PORT) + VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, SCTP, DST_PORT); +} + +/** + * iavf_fill_adv_rss_cfg_msg - fill the RSS configuration into virtchnl message + * @rss_cfg: the virtchnl message to be filled with RSS configuration setting + * @packet_hdrs: the RSS configuration protocol header types + * @hash_flds: the RSS configuration protocol hash fields + * + * Returns 0 if the RSS configuration virtchnl message is filled successfully + */ +int +iavf_fill_adv_rss_cfg_msg(struct virtchnl_rss_cfg *rss_cfg, + u32 packet_hdrs, u64 hash_flds) +{ + struct virtchnl_proto_hdrs *proto_hdrs = &rss_cfg->proto_hdrs; + struct virtchnl_proto_hdr *hdr; + + rss_cfg->rss_algorithm = VIRTCHNL_RSS_ALG_TOEPLITZ_ASYMMETRIC; + + proto_hdrs->tunnel_level = 0; /* always outer layer */ + + hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++]; + switch (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_L3) { + case IAVF_ADV_RSS_FLOW_SEG_HDR_IPV4: + iavf_fill_adv_rss_ip4_hdr(hdr, hash_flds); + break; + case IAVF_ADV_RSS_FLOW_SEG_HDR_IPV6: + iavf_fill_adv_rss_ip6_hdr(hdr, hash_flds); + break; + default: + return -EINVAL; + } + + hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++]; + switch (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_L4) { + case IAVF_ADV_RSS_FLOW_SEG_HDR_TCP: + iavf_fill_adv_rss_tcp_hdr(hdr, hash_flds); + break; + case IAVF_ADV_RSS_FLOW_SEG_HDR_UDP: + iavf_fill_adv_rss_udp_hdr(hdr, hash_flds); + break; + case IAVF_ADV_RSS_FLOW_SEG_HDR_SCTP: + iavf_fill_adv_rss_sctp_hdr(hdr, hash_flds); + break; + default: + return -EINVAL; + } + + return 0; +} + +/** + * iavf_find_adv_rss_cfg_by_hdrs - find RSS configuration with header type + * @adapter: pointer to the VF adapter structure + * @packet_hdrs: protocol header type to find. + * + * Returns pointer to advance RSS configuration if found or null + */ +struct iavf_adv_rss * +iavf_find_adv_rss_cfg_by_hdrs(struct iavf_adapter *adapter, u32 packet_hdrs) +{ + struct iavf_adv_rss *rss; + + list_for_each_entry(rss, &adapter->adv_rss_list_head, list) + if (rss->packet_hdrs == packet_hdrs) + return rss; + + return NULL; +} + +/** + * iavf_print_adv_rss_cfg + * @adapter: pointer to the VF adapter structure + * @rss: pointer to the advance RSS configuration to print + * @action: the string description about how to handle the RSS + * @result: the string description about the virtchnl result + * + * Print the advance RSS configuration + **/ +void +iavf_print_adv_rss_cfg(struct iavf_adapter *adapter, struct iavf_adv_rss *rss, + const char *action, const char *result) +{ + u32 packet_hdrs = rss->packet_hdrs; + u64 hash_flds = rss->hash_flds; + static char hash_opt[300]; + const char *proto; + + if (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_TCP) + proto = "TCP"; + else if (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_UDP) + proto = "UDP"; + else if (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_SCTP) + proto = "SCTP"; + else + return; + + memset(hash_opt, 0, sizeof(hash_opt)); + + strcat(hash_opt, proto); + if (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_IPV4) + strcat(hash_opt, "v4 "); + else + strcat(hash_opt, "v6 "); + + if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_IPV4_SA | + IAVF_ADV_RSS_HASH_FLD_IPV6_SA)) + strcat(hash_opt, "IP SA,"); + if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_IPV4_DA | + IAVF_ADV_RSS_HASH_FLD_IPV6_DA)) + strcat(hash_opt, "IP DA,"); + if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_TCP_SRC_PORT | + IAVF_ADV_RSS_HASH_FLD_UDP_SRC_PORT | + IAVF_ADV_RSS_HASH_FLD_SCTP_SRC_PORT)) + strcat(hash_opt, "src port,"); + if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_TCP_DST_PORT | + IAVF_ADV_RSS_HASH_FLD_UDP_DST_PORT | + IAVF_ADV_RSS_HASH_FLD_SCTP_DST_PORT)) + strcat(hash_opt, "dst port,"); + + if (!action) + action = ""; + + if (!result) + result = ""; + + dev_info(&adapter->pdev->dev, "%s %s %s\n", action, hash_opt, result); +} |