diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/vnet/srv6/sr_policy_rewrite.c | 51 |
1 files changed, 39 insertions, 12 deletions
diff --git a/src/vnet/srv6/sr_policy_rewrite.c b/src/vnet/srv6/sr_policy_rewrite.c index 3e8a4e4a9c5..c7ac44b591d 100644 --- a/src/vnet/srv6/sr_policy_rewrite.c +++ b/src/vnet/srv6/sr_policy_rewrite.c @@ -1238,14 +1238,21 @@ encaps_processing_v6 (vlib_node_runtime_t * node, ip6_header_t * ip0, ip6_header_t * ip0_encap) { u32 new_l0; + u32 flow_label; ip0_encap->hop_limit -= 1; new_l0 = ip0->payload_length + sizeof (ip6_header_t) + clib_net_to_host_u16 (ip0_encap->payload_length); ip0->payload_length = clib_host_to_net_u16 (new_l0); - ip0->ip_version_traffic_class_and_flow_label = - ip0_encap->ip_version_traffic_class_and_flow_label; + + flow_label = ip6_compute_flow_hash (ip0_encap, IP_FLOW_HASH_DEFAULT); + ip0->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 ( + 0 | + (clib_net_to_host_u32 ( + ip0_encap->ip_version_traffic_class_and_flow_label) & + 0xfff00000) | + (flow_label & 0x0000ffff)); } /** @@ -1510,6 +1517,7 @@ encaps_processing_v4 (vlib_node_runtime_t * node, ip6_sr_header_t *sr0; u32 checksum0; + u32 flow_label; /* Inner IPv4: Decrement TTL & update checksum */ ip0_encap->ttl -= 1; @@ -1520,9 +1528,10 @@ encaps_processing_v4 (vlib_node_runtime_t * node, /* Outer IPv6: Update length, FL, proto */ new_l0 = ip0->payload_length + clib_net_to_host_u16 (ip0_encap->length); ip0->payload_length = clib_host_to_net_u16 (new_l0); - ip0->ip_version_traffic_class_and_flow_label = - clib_host_to_net_u32 (0 | ((6 & 0xF) << 28) | - ((ip0_encap->tos & 0xFF) << 20)); + flow_label = ip4_compute_flow_hash (ip0_encap, IP_FLOW_HASH_DEFAULT); + ip0->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 ( + 0 | ((6 & 0xF) << 28) | ((ip0_encap->tos & 0xFF) << 20) | + (flow_label & 0x0000ffff)); if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE) { sr0 = (void *) (ip0 + 1); @@ -1861,6 +1870,7 @@ sr_policy_rewrite_encaps_l2 (vlib_main_t * vm, vlib_node_runtime_t * node, ip6_sr_header_t *sr0, *sr1, *sr2, *sr3; ip6_sr_policy_t *sp0, *sp1, *sp2, *sp3; ip6_sr_sl_t *sl0, *sl1, *sl2, *sl3; + u32 flow_label0, flow_label1, flow_label2, flow_label3; /* Prefetch next iteration. */ { @@ -1916,12 +1926,16 @@ sr_policy_rewrite_encaps_l2 (vlib_main_t * vm, vlib_node_runtime_t * node, sm->sw_iface_sr_policies[vnet_buffer (b3)->sw_if_index [VLIB_RX]]); + flow_label0 = l2_flow_hash (b0); + flow_label1 = l2_flow_hash (b1); + flow_label2 = l2_flow_hash (b2); + flow_label3 = l2_flow_hash (b3); if (vec_len (sp0->segments_lists) == 1) vnet_buffer (b0)->ip.adj_index[VLIB_TX] = sp0->segments_lists[0]; else { - vnet_buffer (b0)->ip.flow_hash = l2_flow_hash (b0); + vnet_buffer (b0)->ip.flow_hash = flow_label0; vnet_buffer (b0)->ip.adj_index[VLIB_TX] = sp0->segments_lists[(vnet_buffer (b0)->ip.flow_hash & (vec_len (sp0->segments_lists) - 1))]; @@ -1931,7 +1945,7 @@ sr_policy_rewrite_encaps_l2 (vlib_main_t * vm, vlib_node_runtime_t * node, vnet_buffer (b1)->ip.adj_index[VLIB_TX] = sp1->segments_lists[1]; else { - vnet_buffer (b1)->ip.flow_hash = l2_flow_hash (b1); + vnet_buffer (b1)->ip.flow_hash = flow_label1; vnet_buffer (b1)->ip.adj_index[VLIB_TX] = sp1->segments_lists[(vnet_buffer (b1)->ip.flow_hash & (vec_len (sp1->segments_lists) - 1))]; @@ -1941,7 +1955,7 @@ sr_policy_rewrite_encaps_l2 (vlib_main_t * vm, vlib_node_runtime_t * node, vnet_buffer (b2)->ip.adj_index[VLIB_TX] = sp2->segments_lists[2]; else { - vnet_buffer (b2)->ip.flow_hash = l2_flow_hash (b2); + vnet_buffer (b2)->ip.flow_hash = flow_label2; vnet_buffer (b2)->ip.adj_index[VLIB_TX] = sp2->segments_lists[(vnet_buffer (b2)->ip.flow_hash & (vec_len (sp2->segments_lists) - 1))]; @@ -1951,7 +1965,7 @@ sr_policy_rewrite_encaps_l2 (vlib_main_t * vm, vlib_node_runtime_t * node, vnet_buffer (b3)->ip.adj_index[VLIB_TX] = sp3->segments_lists[3]; else { - vnet_buffer (b3)->ip.flow_hash = l2_flow_hash (b3); + vnet_buffer (b3)->ip.flow_hash = flow_label3; vnet_buffer (b3)->ip.adj_index[VLIB_TX] = sp3->segments_lists[(vnet_buffer (b3)->ip.flow_hash & (vec_len (sp3->segments_lists) - 1))]; @@ -2044,8 +2058,16 @@ sr_policy_rewrite_encaps_l2 (vlib_main_t * vm, vlib_node_runtime_t * node, else ip3->protocol = IP_PROTOCOL_IP6_ETHERNET; - /* Which Traffic class and flow label do I set ? */ - //ip0->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32(0|((6&0xF)<<28)|((ip0_encap->tos&0xFF)<<20)); + /* TC is set to 0 for all ethernet frames, should be taken from COS + * od DSCP of encapsulated packet in the future */ + ip0->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 ( + 0 | ((6 & 0xF) << 28) | ((0x00) << 20) | (flow_label0 & 0xffff)); + ip1->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 ( + 0 | ((6 & 0xF) << 28) | ((0x00) << 20) | (flow_label1 & 0xffff)); + ip2->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 ( + 0 | ((6 & 0xF) << 28) | ((0x00) << 20) | (flow_label2 & 0xffff)); + ip3->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 ( + 0 | ((6 & 0xF) << 28) | ((0x00) << 20) | (flow_label3 & 0xffff)); if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE))) { @@ -2107,6 +2129,7 @@ sr_policy_rewrite_encaps_l2 (vlib_main_t * vm, vlib_node_runtime_t * node, ip6_sr_policy_t *sp0; ip6_sr_sl_t *sl0; u32 next0 = SR_POLICY_REWRITE_NEXT_IP6_LOOKUP; + u32 flow_label0; bi0 = from[0]; to_next[0] = bi0; @@ -2121,13 +2144,14 @@ sr_policy_rewrite_encaps_l2 (vlib_main_t * vm, vlib_node_runtime_t * node, sm->sw_iface_sr_policies[vnet_buffer (b0)->sw_if_index [VLIB_RX]]); + flow_label0 = l2_flow_hash (b0); /* In case there is more than one SL, LB among them */ if (vec_len (sp0->segments_lists) == 1) vnet_buffer (b0)->ip.adj_index[VLIB_TX] = sp0->segments_lists[0]; else { - vnet_buffer (b0)->ip.flow_hash = l2_flow_hash (b0); + vnet_buffer (b0)->ip.flow_hash = flow_label0; vnet_buffer (b0)->ip.adj_index[VLIB_TX] = sp0->segments_lists[(vnet_buffer (b0)->ip.flow_hash & (vec_len (sp0->segments_lists) - 1))]; @@ -2158,6 +2182,9 @@ sr_policy_rewrite_encaps_l2 (vlib_main_t * vm, vlib_node_runtime_t * node, else ip0->protocol = IP_PROTOCOL_IP6_ETHERNET; + ip0->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 ( + 0 | ((6 & 0xF) << 28) | ((0x00) << 20) | (flow_label0 & 0xffff)); + if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE) && PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) { |