1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) 2021, Intel Corporation. */ 3 4 /* advanced RSS configuration ethtool support for iavf */ 5 6 #include "iavf.h" 7 8 /** 9 * iavf_fill_adv_rss_ip4_hdr - fill the IPv4 RSS protocol header 10 * @hdr: the virtchnl message protocol header data structure 11 * @hash_flds: the RSS configuration protocol hash fields 12 */ 13 static void 14 iavf_fill_adv_rss_ip4_hdr(struct virtchnl_proto_hdr *hdr, u64 hash_flds) 15 { 16 VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, IPV4); 17 18 if (hash_flds & IAVF_ADV_RSS_HASH_FLD_IPV4_SA) 19 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV4, SRC); 20 21 if (hash_flds & IAVF_ADV_RSS_HASH_FLD_IPV4_DA) 22 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV4, DST); 23 } 24 25 /** 26 * iavf_fill_adv_rss_ip6_hdr - fill the IPv6 RSS protocol header 27 * @hdr: the virtchnl message protocol header data structure 28 * @hash_flds: the RSS configuration protocol hash fields 29 */ 30 static void 31 iavf_fill_adv_rss_ip6_hdr(struct virtchnl_proto_hdr *hdr, u64 hash_flds) 32 { 33 VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, IPV6); 34 35 if (hash_flds & IAVF_ADV_RSS_HASH_FLD_IPV6_SA) 36 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV6, SRC); 37 38 if (hash_flds & IAVF_ADV_RSS_HASH_FLD_IPV6_DA) 39 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, IPV6, DST); 40 } 41 42 /** 43 * iavf_fill_adv_rss_tcp_hdr - fill the TCP RSS protocol header 44 * @hdr: the virtchnl message protocol header data structure 45 * @hash_flds: the RSS configuration protocol hash fields 46 */ 47 static void 48 iavf_fill_adv_rss_tcp_hdr(struct virtchnl_proto_hdr *hdr, u64 hash_flds) 49 { 50 VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, TCP); 51 52 if (hash_flds & IAVF_ADV_RSS_HASH_FLD_TCP_SRC_PORT) 53 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, TCP, SRC_PORT); 54 55 if (hash_flds & IAVF_ADV_RSS_HASH_FLD_TCP_DST_PORT) 56 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, TCP, DST_PORT); 57 } 58 59 /** 60 * iavf_fill_adv_rss_udp_hdr - fill the UDP RSS protocol header 61 * @hdr: the virtchnl message protocol header data structure 62 * @hash_flds: the RSS configuration protocol hash fields 63 */ 64 static void 65 iavf_fill_adv_rss_udp_hdr(struct virtchnl_proto_hdr *hdr, u64 hash_flds) 66 { 67 VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, UDP); 68 69 if (hash_flds & IAVF_ADV_RSS_HASH_FLD_UDP_SRC_PORT) 70 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, UDP, SRC_PORT); 71 72 if (hash_flds & IAVF_ADV_RSS_HASH_FLD_UDP_DST_PORT) 73 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, UDP, DST_PORT); 74 } 75 76 /** 77 * iavf_fill_adv_rss_sctp_hdr - fill the SCTP RSS protocol header 78 * @hdr: the virtchnl message protocol header data structure 79 * @hash_flds: the RSS configuration protocol hash fields 80 */ 81 static void 82 iavf_fill_adv_rss_sctp_hdr(struct virtchnl_proto_hdr *hdr, u64 hash_flds) 83 { 84 VIRTCHNL_SET_PROTO_HDR_TYPE(hdr, SCTP); 85 86 if (hash_flds & IAVF_ADV_RSS_HASH_FLD_SCTP_SRC_PORT) 87 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, SCTP, SRC_PORT); 88 89 if (hash_flds & IAVF_ADV_RSS_HASH_FLD_SCTP_DST_PORT) 90 VIRTCHNL_ADD_PROTO_HDR_FIELD_BIT(hdr, SCTP, DST_PORT); 91 } 92 93 /** 94 * iavf_fill_adv_rss_cfg_msg - fill the RSS configuration into virtchnl message 95 * @rss_cfg: the virtchnl message to be filled with RSS configuration setting 96 * @packet_hdrs: the RSS configuration protocol header types 97 * @hash_flds: the RSS configuration protocol hash fields 98 * 99 * Returns 0 if the RSS configuration virtchnl message is filled successfully 100 */ 101 int 102 iavf_fill_adv_rss_cfg_msg(struct virtchnl_rss_cfg *rss_cfg, 103 u32 packet_hdrs, u64 hash_flds) 104 { 105 struct virtchnl_proto_hdrs *proto_hdrs = &rss_cfg->proto_hdrs; 106 struct virtchnl_proto_hdr *hdr; 107 108 rss_cfg->rss_algorithm = VIRTCHNL_RSS_ALG_TOEPLITZ_ASYMMETRIC; 109 110 proto_hdrs->tunnel_level = 0; /* always outer layer */ 111 112 hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++]; 113 switch (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_L3) { 114 case IAVF_ADV_RSS_FLOW_SEG_HDR_IPV4: 115 iavf_fill_adv_rss_ip4_hdr(hdr, hash_flds); 116 break; 117 case IAVF_ADV_RSS_FLOW_SEG_HDR_IPV6: 118 iavf_fill_adv_rss_ip6_hdr(hdr, hash_flds); 119 break; 120 default: 121 return -EINVAL; 122 } 123 124 hdr = &proto_hdrs->proto_hdr[proto_hdrs->count++]; 125 switch (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_L4) { 126 case IAVF_ADV_RSS_FLOW_SEG_HDR_TCP: 127 iavf_fill_adv_rss_tcp_hdr(hdr, hash_flds); 128 break; 129 case IAVF_ADV_RSS_FLOW_SEG_HDR_UDP: 130 iavf_fill_adv_rss_udp_hdr(hdr, hash_flds); 131 break; 132 case IAVF_ADV_RSS_FLOW_SEG_HDR_SCTP: 133 iavf_fill_adv_rss_sctp_hdr(hdr, hash_flds); 134 break; 135 default: 136 return -EINVAL; 137 } 138 139 return 0; 140 } 141 142 /** 143 * iavf_find_adv_rss_cfg_by_hdrs - find RSS configuration with header type 144 * @adapter: pointer to the VF adapter structure 145 * @packet_hdrs: protocol header type to find. 146 * 147 * Returns pointer to advance RSS configuration if found or null 148 */ 149 struct iavf_adv_rss * 150 iavf_find_adv_rss_cfg_by_hdrs(struct iavf_adapter *adapter, u32 packet_hdrs) 151 { 152 struct iavf_adv_rss *rss; 153 154 list_for_each_entry(rss, &adapter->adv_rss_list_head, list) 155 if (rss->packet_hdrs == packet_hdrs) 156 return rss; 157 158 return NULL; 159 } 160 161 /** 162 * iavf_print_adv_rss_cfg 163 * @adapter: pointer to the VF adapter structure 164 * @rss: pointer to the advance RSS configuration to print 165 * @action: the string description about how to handle the RSS 166 * @result: the string description about the virtchnl result 167 * 168 * Print the advance RSS configuration 169 **/ 170 void 171 iavf_print_adv_rss_cfg(struct iavf_adapter *adapter, struct iavf_adv_rss *rss, 172 const char *action, const char *result) 173 { 174 u32 packet_hdrs = rss->packet_hdrs; 175 u64 hash_flds = rss->hash_flds; 176 static char hash_opt[300]; 177 const char *proto; 178 179 if (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_TCP) 180 proto = "TCP"; 181 else if (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_UDP) 182 proto = "UDP"; 183 else if (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_SCTP) 184 proto = "SCTP"; 185 else 186 return; 187 188 memset(hash_opt, 0, sizeof(hash_opt)); 189 190 strcat(hash_opt, proto); 191 if (packet_hdrs & IAVF_ADV_RSS_FLOW_SEG_HDR_IPV4) 192 strcat(hash_opt, "v4 "); 193 else 194 strcat(hash_opt, "v6 "); 195 196 if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_IPV4_SA | 197 IAVF_ADV_RSS_HASH_FLD_IPV6_SA)) 198 strcat(hash_opt, "IP SA,"); 199 if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_IPV4_DA | 200 IAVF_ADV_RSS_HASH_FLD_IPV6_DA)) 201 strcat(hash_opt, "IP DA,"); 202 if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_TCP_SRC_PORT | 203 IAVF_ADV_RSS_HASH_FLD_UDP_SRC_PORT | 204 IAVF_ADV_RSS_HASH_FLD_SCTP_SRC_PORT)) 205 strcat(hash_opt, "src port,"); 206 if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_TCP_DST_PORT | 207 IAVF_ADV_RSS_HASH_FLD_UDP_DST_PORT | 208 IAVF_ADV_RSS_HASH_FLD_SCTP_DST_PORT)) 209 strcat(hash_opt, "dst port,"); 210 211 if (!action) 212 action = ""; 213 214 if (!result) 215 result = ""; 216 217 dev_info(&adapter->pdev->dev, "%s %s %s\n", action, hash_opt, result); 218 } 219