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
iavf_fill_adv_rss_ip4_hdr(struct virtchnl_proto_hdr * hdr,u64 hash_flds)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
iavf_fill_adv_rss_ip6_hdr(struct virtchnl_proto_hdr * hdr,u64 hash_flds)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
iavf_fill_adv_rss_tcp_hdr(struct virtchnl_proto_hdr * hdr,u64 hash_flds)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
iavf_fill_adv_rss_udp_hdr(struct virtchnl_proto_hdr * hdr,u64 hash_flds)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
iavf_fill_adv_rss_sctp_hdr(struct virtchnl_proto_hdr * hdr,u64 hash_flds)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
iavf_fill_adv_rss_cfg_msg(struct virtchnl_rss_cfg * rss_cfg,u32 packet_hdrs,u64 hash_flds)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 *
iavf_find_adv_rss_cfg_by_hdrs(struct iavf_adapter * adapter,u32 packet_hdrs)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
iavf_print_adv_rss_cfg(struct iavf_adapter * adapter,struct iavf_adv_rss * rss,const char * action,const char * result)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