From cb1145d1b91a08acf07c68df9dc1474fae5ebfb1 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Zolt=C3=A1n=20Balogh?= Date: Fri, 23 Jun 2017 16:48:47 +0000 Subject: [PATCH] userspace: Introduce packet_type in OF 1.5 packet-out Introducing packet_type in OF 1.5 packet-out. Partly based on Jean Tourrilhes's work. Add test cases for OF1.5 packet-out Add negative test case for OF1.5 packet-out Signed-off-by: Jean Tourrilhes Signed-off-by: Zoltan Balogh Co-authored-by: Jan Scheurich Signed-off-by: Ben Pfaff --- lib/flow.c | 36 +++++++++++-------- lib/ofp-parse.c | 13 +++++++ lib/ofp-print.c | 4 +-- lib/ofp-util.c | 2 ++ ofproto/ofproto.c | 3 ++ tests/ofproto.at | 81 +++++++++++++++++++++++++++++++++++++++++++ utilities/ovs-ofctl.c | 1 + 7 files changed, 123 insertions(+), 17 deletions(-) diff --git a/lib/flow.c b/lib/flow.c index dbca4d03d..75a91cc6a 100644 --- a/lib/flow.c +++ b/lib/flow.c @@ -1441,6 +1441,8 @@ void flow_wildcards_init_for_packet(struct flow_wildcards *wc, const struct flow *flow) { + ovs_be16 dl_type = OVS_BE16_MAX; + memset(&wc->masks, 0x0, sizeof wc->masks); /* Update this function whenever struct flow changes. */ @@ -1493,25 +1495,29 @@ flow_wildcards_init_for_packet(struct flow_wildcards *wc, /* actset_output wildcarded. */ WC_MASK_FIELD(wc, packet_type); - WC_MASK_FIELD(wc, dl_dst); - WC_MASK_FIELD(wc, dl_src); - WC_MASK_FIELD(wc, dl_type); - - /* No need to set mask of inner VLANs that don't exist. */ - for (int i = 0; i < FLOW_MAX_VLAN_HEADERS; i++) { - /* Always show the first zero VLAN. */ - WC_MASK_FIELD(wc, vlans[i]); - if (flow->vlans[i].tci == htons(0)) { - break; + if (flow->packet_type == htonl(PT_ETH)) { + WC_MASK_FIELD(wc, dl_dst); + WC_MASK_FIELD(wc, dl_src); + WC_MASK_FIELD(wc, dl_type); + /* No need to set mask of inner VLANs that don't exist. */ + for (int i = 0; i < FLOW_MAX_VLAN_HEADERS; i++) { + /* Always show the first zero VLAN. */ + WC_MASK_FIELD(wc, vlans[i]); + if (flow->vlans[i].tci == htons(0)) { + break; + } } + dl_type = flow->dl_type; + } else { + dl_type = pt_ns_type_be(flow->packet_type); } - if (flow->dl_type == htons(ETH_TYPE_IP)) { + if (dl_type == htons(ETH_TYPE_IP)) { WC_MASK_FIELD(wc, nw_src); WC_MASK_FIELD(wc, nw_dst); WC_MASK_FIELD(wc, ct_nw_src); WC_MASK_FIELD(wc, ct_nw_dst); - } else if (flow->dl_type == htons(ETH_TYPE_IPV6)) { + } else if (dl_type == htons(ETH_TYPE_IPV6)) { WC_MASK_FIELD(wc, ipv6_src); WC_MASK_FIELD(wc, ipv6_dst); WC_MASK_FIELD(wc, ipv6_label); @@ -1523,15 +1529,15 @@ flow_wildcards_init_for_packet(struct flow_wildcards *wc, WC_MASK_FIELD(wc, ct_ipv6_src); WC_MASK_FIELD(wc, ct_ipv6_dst); } - } else if (flow->dl_type == htons(ETH_TYPE_ARP) || - flow->dl_type == htons(ETH_TYPE_RARP)) { + } else if (dl_type == htons(ETH_TYPE_ARP) || + dl_type == htons(ETH_TYPE_RARP)) { WC_MASK_FIELD(wc, nw_src); WC_MASK_FIELD(wc, nw_dst); WC_MASK_FIELD(wc, nw_proto); WC_MASK_FIELD(wc, arp_sha); WC_MASK_FIELD(wc, arp_tha); return; - } else if (eth_type_mpls(flow->dl_type)) { + } else if (eth_type_mpls(dl_type)) { for (int i = 0; i < FLOW_MAX_MPLS_LABELS; i++) { WC_MASK_FIELD(wc, mpls_lse[i]); if (flow->mpls_lse[i] & htonl(MPLS_BOS_MASK)) { diff --git a/lib/ofp-parse.c b/lib/ofp-parse.c index 8e2448b20..528b75b4f 100644 --- a/lib/ofp-parse.c +++ b/lib/ofp-parse.c @@ -667,6 +667,19 @@ parse_ofp_packet_out_str__(struct ofputil_packet_out *po, char *string, goto out; } match_set_in_port(&po->flow_metadata, in_port); + } else if (!strcmp(name, "packet_type")) { + char *ns = value; + char *ns_type = strstr(value, ","); + if (ns_type) { + ovs_be32 packet_type; + *ns_type = '\0'; + packet_type = PACKET_TYPE_BE(strtoul(ns, NULL, 0), + strtoul(++ns_type, NULL, 0)); + match_set_packet_type(&po->flow_metadata, packet_type); + } else { + error = xasprintf("%s(%s) can't be interpreted", name, value); + goto out; + } } else if (!strcmp(name, "packet")) { const char *error_msg = eth_from_hex(value, &packet); if (error_msg) { diff --git a/lib/ofp-print.c b/lib/ofp-print.c index 8a6c54e1d..4370cb522 100644 --- a/lib/ofp-print.c +++ b/lib/ofp-print.c @@ -256,9 +256,9 @@ ofp_print_packet_out(struct ds *string, const struct ofp_header *oh, if (po.buffer_id == UINT32_MAX) { ds_put_format(string, " data_len=%"PRIuSIZE, po.packet_len); if (verbosity > 0 && po.packet_len > 0) { - /* Packet Out can only carry Ethernet packets. */ + ovs_be32 po_packet_type = po.flow_metadata.flow.packet_type; char *packet = ofp_packet_to_string(po.packet, po.packet_len, - htonl(PT_ETH)); + po_packet_type); ds_put_char(string, '\n'); ds_put_cstr(string, packet); free(packet); diff --git a/lib/ofp-util.c b/lib/ofp-util.c index 344b66a30..0c768aed9 100644 --- a/lib/ofp-util.c +++ b/lib/ofp-util.c @@ -4258,6 +4258,7 @@ ofputil_decode_packet_out(struct ofputil_packet_out *po, if (error) { return error; } + match_set_packet_type(&po->flow_metadata, htonl(PT_ETH)); match_set_in_port(&po->flow_metadata, in_port); error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len), @@ -4271,6 +4272,7 @@ ofputil_decode_packet_out(struct ofputil_packet_out *po, const struct ofp10_packet_out *opo = ofpbuf_pull(&b, sizeof *opo); po->buffer_id = ntohl(opo->buffer_id); + match_set_packet_type(&po->flow_metadata, htonl(PT_ETH)); match_set_in_port(&po->flow_metadata, u16_to_ofp(ntohs(opo->in_port))); error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len), diff --git a/ofproto/ofproto.c b/ofproto/ofproto.c index ad94db514..7541af0b2 100644 --- a/ofproto/ofproto.c +++ b/ofproto/ofproto.c @@ -3475,6 +3475,9 @@ ofproto_packet_out_init(struct ofproto *ofproto, /* Ensure that the L3 header is 32-bit aligned. */ opo->packet = dp_packet_clone_data_with_headroom(po->packet, po->packet_len, 2); + /* Take the received packet_tpye as packet_type of the packet. */ + opo->packet->packet_type = po->flow_metadata.flow.packet_type; + /* Store struct flow. */ opo->flow = xmalloc(sizeof *opo->flow); *opo->flow = po->flow_metadata.flow; diff --git a/tests/ofproto.at b/tests/ofproto.at index 25aa00aff..9e6acfad6 100644 --- a/tests/ofproto.at +++ b/tests/ofproto.at @@ -4136,6 +4136,87 @@ OFPT_BARRIER_REPLY: OVS_VSWITCHD_STOP AT_CLEANUP +dnl This test checks that 1.5 packet_out is properly encoded/decoded. +AT_SETUP([ofproto - packet-out with set_field metadata (OpenFlow 1.5)]) +OVS_VSWITCHD_START + +# Start a monitor listening for packet-ins. +AT_CHECK([ovs-ofctl -P standard -O OpenFlow13 monitor br0 --detach --no-chdir --pidfile]) +ovs-appctl -t ovs-ofctl ofctl/send 0409000c0123456700000080 +ovs-appctl -t ovs-ofctl ofctl/barrier +ovs-appctl -t ovs-ofctl ofctl/set-output-file monitor.log +AT_CAPTURE_FILE([monitor.log]) + +# Send a packet-out with a couple of set-field action to set some metadata, and forward to controller +AT_CHECK([ovs-ofctl -O OpenFlow15 packet-out br0 CONTROLLER 'set_field:0xfafafafa5a5a5a5a->metadata, controller' '0001020304050010203040501234']) + +# Stop the monitor and check its output. +ovs-appctl -t ovs-ofctl ofctl/barrier +ovs-appctl -t ovs-ofctl exit + +AT_CHECK([sed 's/ (xid=0x[[0-9a-fA-F]]*)//' monitor.log], [0], [dnl +OFPT_PACKET_IN (OF1.3): total_len=14 metadata=0xfafafafa5a5a5a5a,in_port=CONTROLLER (via action) data_len=14 (unbuffered) +vlan_tci=0x0000,dl_src=00:10:20:30:40:50,dl_dst=00:01:02:03:04:05,dl_type=0x1234 +OFPT_BARRIER_REPLY (OF1.3): +]) + +OVS_VSWITCHD_STOP +AT_CLEANUP + +dnl This test checks that packet_type PT_ETH is properly encoded/decoded in 1.5 packet_out. +AT_SETUP([ofproto - packet-out with set_field metadata with packet_type PT_ETH (OpenFlow 1.5)]) +OVS_VSWITCHD_START + +# Start a monitor listening for packet-ins. +AT_CHECK([ovs-ofctl -P standard -O OpenFlow13 monitor br0 --detach --no-chdir --pidfile]) +ovs-appctl -t ovs-ofctl ofctl/send 0409000c0123456700000080 +ovs-appctl -t ovs-ofctl ofctl/barrier +ovs-appctl -t ovs-ofctl ofctl/set-output-file monitor.log +AT_CAPTURE_FILE([monitor.log]) + +# Send a packet-out with a couple of set-field action to set some metadata, and forward to controller +AT_CHECK([ovs-ofctl -O OpenFlow15 packet-out br0 "in_port=controller packet=0001020304050010203040501234 packet_type(0,0x0) actions=set_field:0xfafafafa5a5a5a5a->metadata,controller"]) + +# Stop the monitor and check its output. +ovs-appctl -t ovs-ofctl ofctl/barrier +ovs-appctl -t ovs-ofctl exit + +AT_CHECK([sed 's/ (xid=0x[[0-9a-fA-F]]*)//' monitor.log], [0], [dnl +OFPT_PACKET_IN (OF1.3): total_len=14 metadata=0xfafafafa5a5a5a5a,in_port=CONTROLLER (via action) data_len=14 (unbuffered) +vlan_tci=0x0000,dl_src=00:10:20:30:40:50,dl_dst=00:01:02:03:04:05,dl_type=0x1234 +OFPT_BARRIER_REPLY (OF1.3): +]) + +OVS_VSWITCHD_STOP +AT_CLEANUP + +dnl This test checks that packet_type PT_IPV4 is properly encoded/decoded in 1.5 packet_out. +AT_SETUP([ofproto - packet-out with set_field metadata with packet_type PT_IPV4 on PTAP bridge (OpenFlow 1.5)]) +OVS_VSWITCHD_START + +# Start a monitor listening for packet-ins. +AT_CHECK([ovs-ofctl -P standard -O OpenFlow13 monitor br0 --detach --no-chdir --pidfile]) +ovs-appctl -t ovs-ofctl ofctl/send 0409000c0123456700000080 +ovs-appctl -t ovs-ofctl ofctl/barrier +ovs-appctl -t ovs-ofctl ofctl/set-output-file monitor.log +AT_CAPTURE_FILE([monitor.log]) + +# Send a packet-out with a couple of set-field action to set some metadata, and forward to controller +AT_CHECK([ovs-ofctl -O OpenFlow15 packet-out br0 "in_port=controller packet=4500002012344000ff1155670a0000140a00001e006400c8000cea78ffffffff packet_type(1,0x800) actions=set_field:0xfafafafa5a5a5a5a->metadata,controller"]) + +# Stop the monitor and check its output. +ovs-appctl -t ovs-ofctl ofctl/barrier +ovs-appctl -t ovs-ofctl exit + +AT_CHECK([sed 's/ (xid=0x[[0-9a-fA-F]]*)//' monitor.log], [0], [dnl +OFPT_PACKET_IN (OF1.3): total_len=32 packet_type=(1,0x800),metadata=0xfafafafa5a5a5a5a,in_port=CONTROLLER (via action) data_len=32 (unbuffered) +packet_type=(1,0x800),nw_src=10.0.0.20,nw_dst=10.0.0.30,nw_proto=17,nw_tos=0,nw_ecn=0,nw_ttl=255,tp_src=100,tp_dst=200 udp_csum:ea78 +OFPT_BARRIER_REPLY (OF1.3): +]) + +OVS_VSWITCHD_STOP +AT_CLEANUP + dnl This test checks that metadata is encoded in packet_in structures, dnl supported by NXAST. AT_SETUP([ofproto - packet-out with metadata (NXM)]) diff --git a/utilities/ovs-ofctl.c b/utilities/ovs-ofctl.c index d7e37e85f..ad862efe3 100644 --- a/utilities/ovs-ofctl.c +++ b/utilities/ovs-ofctl.c @@ -2206,6 +2206,7 @@ ofctl_packet_out(struct ovs_cmdl_context *ctx) str_to_port_no(ctx->argv[1], ctx->argv[2])); po.ofpacts = ofpacts.data; po.ofpacts_len = ofpacts.size; + po.flow_metadata.flow.packet_type = htonl(PT_ETH); protocol = open_vconn_for_flow_mod(ctx->argv[1], &vconn, usable_protocols); -- 2.39.5