net/iavf: support RSS hash for IP fragment

[dpdk.git] / drivers / net / iavf / iavf_hash.c

diff --git a/drivers/net/iavf/iavf_hash.c b/drivers/net/iavf/iavf_hash.c
index d8d22f8..5d3d628 100644 (file)
--- a/drivers/net/iavf/iavf_hash.c
+++ b/drivers/net/iavf/iavf_hash.c
@@ -112,6 +112,10 @@ iavf_hash_parse_pattern_action(struct iavf_adapter *ad,
        FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV6_SRC) | \
        FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV6_DST), {BUFF_NOUSED} }
 
+#define proto_hdr_ipv6_frag { \
+       VIRTCHNL_PROTO_HDR_IPV6_EH_FRAG, \
+       FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV6_EH_FRAG_PKID), {BUFF_NOUSED} }
+
 #define proto_hdr_ipv6_with_prot { \
        VIRTCHNL_PROTO_HDR_IPV6, \
        FIELD_SELECTOR(VIRTCHNL_PROTO_HDR_IPV6_SRC) | \
@@ -190,6 +194,12 @@ struct virtchnl_proto_hdrs outer_ipv6_tmplt = {
        {proto_hdr_eth, proto_hdr_svlan, proto_hdr_cvlan, proto_hdr_ipv6}
 };
 
+struct virtchnl_proto_hdrs outer_ipv6_frag_tmplt = {
+       TUNNEL_LEVEL_OUTER, 5,
+       {proto_hdr_eth, proto_hdr_svlan, proto_hdr_cvlan,
+        proto_hdr_ipv6, proto_hdr_ipv6_frag}
+};
+
 struct virtchnl_proto_hdrs outer_ipv6_udp_tmplt = {
        TUNNEL_LEVEL_OUTER, 5,
        {proto_hdr_eth, proto_hdr_svlan, proto_hdr_cvlan,
@@ -303,7 +313,8 @@ struct virtchnl_proto_hdrs ipv4_ecpri_tmplt = {
 /* rss type super set */
 
 /* IPv4 outer */
-#define IAVF_RSS_TYPE_OUTER_IPV4       (ETH_RSS_ETH | ETH_RSS_IPV4)
+#define IAVF_RSS_TYPE_OUTER_IPV4       (ETH_RSS_ETH | ETH_RSS_IPV4 | \
+                                        ETH_RSS_FRAG_IPV4)
 #define IAVF_RSS_TYPE_OUTER_IPV4_UDP   (IAVF_RSS_TYPE_OUTER_IPV4 | \
                                         ETH_RSS_NONFRAG_IPV4_UDP)
 #define IAVF_RSS_TYPE_OUTER_IPV4_TCP   (IAVF_RSS_TYPE_OUTER_IPV4 | \
@@ -312,6 +323,8 @@ struct virtchnl_proto_hdrs ipv4_ecpri_tmplt = {
                                         ETH_RSS_NONFRAG_IPV4_SCTP)
 /* IPv6 outer */
 #define IAVF_RSS_TYPE_OUTER_IPV6       (ETH_RSS_ETH | ETH_RSS_IPV6)
+#define IAVF_RSS_TYPE_OUTER_IPV6_FRAG  (IAVF_RSS_TYPE_OUTER_IPV6 | \
+                                        ETH_RSS_FRAG_IPV6)
 #define IAVF_RSS_TYPE_OUTER_IPV6_UDP   (IAVF_RSS_TYPE_OUTER_IPV6 | \
                                         ETH_RSS_NONFRAG_IPV6_UDP)
 #define IAVF_RSS_TYPE_OUTER_IPV6_TCP   (IAVF_RSS_TYPE_OUTER_IPV6 | \
@@ -330,6 +343,8 @@ struct virtchnl_proto_hdrs ipv4_ecpri_tmplt = {
 /* VLAN IPv6 */
 #define IAVF_RSS_TYPE_VLAN_IPV6                (IAVF_RSS_TYPE_OUTER_IPV6 | \
                                         ETH_RSS_S_VLAN | ETH_RSS_C_VLAN)
+#define IAVF_RSS_TYPE_VLAN_IPV6_FRAG   (IAVF_RSS_TYPE_OUTER_IPV6_FRAG | \
+                                        ETH_RSS_S_VLAN | ETH_RSS_C_VLAN)
 #define IAVF_RSS_TYPE_VLAN_IPV6_UDP    (IAVF_RSS_TYPE_OUTER_IPV6_UDP | \
                                         ETH_RSS_S_VLAN | ETH_RSS_C_VLAN)
 #define IAVF_RSS_TYPE_VLAN_IPV6_TCP    (IAVF_RSS_TYPE_OUTER_IPV6_TCP | \
@@ -415,10 +430,12 @@ static struct iavf_pattern_match_item iavf_hash_pattern_list[] = {
        {iavf_pattern_eth_ipv4_ecpri,                   ETH_RSS_ECPRI,                  &ipv4_ecpri_tmplt},
        /* IPv6 */
        {iavf_pattern_eth_ipv6,                         IAVF_RSS_TYPE_OUTER_IPV6,       &outer_ipv6_tmplt},
+       {iavf_pattern_eth_ipv6_frag_ext,                IAVF_RSS_TYPE_OUTER_IPV6_FRAG,  &outer_ipv6_frag_tmplt},
        {iavf_pattern_eth_ipv6_udp,                     IAVF_RSS_TYPE_OUTER_IPV6_UDP,   &outer_ipv6_udp_tmplt},
        {iavf_pattern_eth_ipv6_tcp,                     IAVF_RSS_TYPE_OUTER_IPV6_TCP,   &outer_ipv6_tcp_tmplt},
        {iavf_pattern_eth_ipv6_sctp,                    IAVF_RSS_TYPE_OUTER_IPV6_SCTP,  &outer_ipv6_sctp_tmplt},
        {iavf_pattern_eth_vlan_ipv6,                    IAVF_RSS_TYPE_VLAN_IPV6,        &outer_ipv6_tmplt},
+       {iavf_pattern_eth_vlan_ipv6_frag_ext,           IAVF_RSS_TYPE_OUTER_IPV6_FRAG,  &outer_ipv6_frag_tmplt},
        {iavf_pattern_eth_vlan_ipv6_udp,                IAVF_RSS_TYPE_VLAN_IPV6_UDP,    &outer_ipv6_udp_tmplt},
        {iavf_pattern_eth_vlan_ipv6_tcp,                IAVF_RSS_TYPE_VLAN_IPV6_TCP,    &outer_ipv6_tcp_tmplt},
        {iavf_pattern_eth_vlan_ipv6_sctp,               IAVF_RSS_TYPE_VLAN_IPV6_SCTP,   &outer_ipv6_sctp_tmplt},
@@ -626,6 +643,29 @@ do { \
        REFINE_PROTO_FLD(ADD, fld_2);   \
 } while (0)
 
+static void
+iavf_hash_add_fragment_hdr(struct virtchnl_proto_hdrs *hdrs, int layer)
+{
+       struct virtchnl_proto_hdr *hdr1;
+       struct virtchnl_proto_hdr *hdr2;
+       int i;
+
+       if (layer < 0 || layer > hdrs->count)
+               return;
+
+       /* shift headers layer */
+       for (i = hdrs->count; i >= layer; i--) {
+               hdr1 = &hdrs->proto_hdr[i];
+               hdr2 = &hdrs->proto_hdr[i - 1];
+               *hdr1 = *hdr2;
+       }
+
+       /* adding dummy fragment header */
+       hdr1 = &hdrs->proto_hdr[layer];
+       VIRTCHNL_SET_PROTO_HDR_TYPE(hdr1, IPV4_FRAG);
+       hdrs->count = ++layer;
+}
+
 /* refine proto hdrs base on l2, l3, l4 rss type */
 static void
 iavf_refine_proto_hdrs_l234(struct virtchnl_proto_hdrs *proto_hdrs,
@@ -647,17 +687,19 @@ iavf_refine_proto_hdrs_l234(struct virtchnl_proto_hdrs *proto_hdrs,
                        break;
                case VIRTCHNL_PROTO_HDR_IPV4:
                        if (rss_type &
-                           (ETH_RSS_IPV4 |
+                           (ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 |
                             ETH_RSS_NONFRAG_IPV4_UDP |
                             ETH_RSS_NONFRAG_IPV4_TCP |
                             ETH_RSS_NONFRAG_IPV4_SCTP)) {
-                               if (rss_type & ETH_RSS_L3_SRC_ONLY) {
+                               if (rss_type & ETH_RSS_FRAG_IPV4) {
+                                       iavf_hash_add_fragment_hdr(proto_hdrs, i + 1);
+                               } else if (rss_type & ETH_RSS_L3_SRC_ONLY) {
                                        REFINE_PROTO_FLD(DEL, IPV4_DST);
                                } else if (rss_type & ETH_RSS_L3_DST_ONLY) {
                                        REFINE_PROTO_FLD(DEL, IPV4_SRC);
                                } else if (rss_type &
-                                        (ETH_RSS_L4_SRC_ONLY |
-                                         ETH_RSS_L4_DST_ONLY)) {
+                                          (ETH_RSS_L4_SRC_ONLY |
+                                           ETH_RSS_L4_DST_ONLY)) {
                                        REFINE_PROTO_FLD(DEL, IPV4_DST);
                                        REFINE_PROTO_FLD(DEL, IPV4_SRC);
                                }
@@ -665,9 +707,21 @@ iavf_refine_proto_hdrs_l234(struct virtchnl_proto_hdrs *proto_hdrs,
                                hdr->field_selector = 0;
                        }
                        break;
+               case VIRTCHNL_PROTO_HDR_IPV4_FRAG:
+                       if (rss_type &
+                           (ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 |
+                            ETH_RSS_NONFRAG_IPV4_UDP |
+                            ETH_RSS_NONFRAG_IPV4_TCP |
+                            ETH_RSS_NONFRAG_IPV4_SCTP)) {
+                               if (rss_type & ETH_RSS_FRAG_IPV4)
+                                       REFINE_PROTO_FLD(ADD, IPV4_FRAG_PKID);
+                       } else {
+                               hdr->field_selector = 0;
+                       }
+                       break;
                case VIRTCHNL_PROTO_HDR_IPV6:
                        if (rss_type &
-                           (ETH_RSS_IPV6 |
+                           (ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 |
                             ETH_RSS_NONFRAG_IPV6_UDP |
                             ETH_RSS_NONFRAG_IPV6_TCP |
                             ETH_RSS_NONFRAG_IPV6_SCTP)) {
@@ -676,8 +730,8 @@ iavf_refine_proto_hdrs_l234(struct virtchnl_proto_hdrs *proto_hdrs,
                                } else if (rss_type & ETH_RSS_L3_DST_ONLY) {
                                        REFINE_PROTO_FLD(DEL, IPV6_SRC);
                                } else if (rss_type &
-                                        (ETH_RSS_L4_SRC_ONLY |
-                                         ETH_RSS_L4_DST_ONLY)) {
+                                          (ETH_RSS_L4_SRC_ONLY |
+                                           ETH_RSS_L4_DST_ONLY)) {
                                        REFINE_PROTO_FLD(DEL, IPV6_DST);
                                        REFINE_PROTO_FLD(DEL, IPV6_SRC);
                                }
@@ -692,6 +746,13 @@ iavf_refine_proto_hdrs_l234(struct virtchnl_proto_hdrs *proto_hdrs,
                                        REPALCE_PROTO_FLD(IPV6_DST,
                                                          IPV6_PREFIX64_DST);
                        }
+                       break;
+               case VIRTCHNL_PROTO_HDR_IPV6_EH_FRAG:
+                       if (rss_type & ETH_RSS_FRAG_IPV6)
+                               REFINE_PROTO_FLD(ADD, IPV6_EH_FRAG_PKID);
+                       else
+                               hdr->field_selector = 0;
+
                        break;
                case VIRTCHNL_PROTO_HDR_UDP:
                        if (rss_type &
@@ -885,8 +946,10 @@ struct rss_attr_type {
                                 ETH_RSS_NONFRAG_IPV6_TCP       | \
                                 ETH_RSS_NONFRAG_IPV6_SCTP)
 
-#define VALID_RSS_IPV4         (ETH_RSS_IPV4 | VALID_RSS_IPV4_L4)
-#define VALID_RSS_IPV6         (ETH_RSS_IPV6 | VALID_RSS_IPV6_L4)
+#define VALID_RSS_IPV4         (ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 | \
+                                VALID_RSS_IPV4_L4)
+#define VALID_RSS_IPV6         (ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 | \
+                                VALID_RSS_IPV6_L4)
 #define VALID_RSS_L3           (VALID_RSS_IPV4 | VALID_RSS_IPV6)
 #define VALID_RSS_L4           (VALID_RSS_IPV4_L4 | VALID_RSS_IPV6_L4)