mirror of https://github.com/FRRouting/frr.git
sharpd: traffic control PoC
This commit adds a command to sharpd to validate the proof of concept for traffic control on specific interface with specific filters. Signed-off-by: Siger Yang <siger.yang@outlook.com>
This commit is contained in:
Siger Yang
parent
dfacea4ae7
commit
04bc334e7a
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@ -32,6 +32,7 @@
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#include "linklist.h"
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#include "link_state.h"
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#include "cspf.h"
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#include "tc.h"
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#include "sharpd/sharp_globals.h"
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#include "sharpd/sharp_zebra.h"
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@ -1339,6 +1340,64 @@ DEFPY (no_sharp_interface_protodown,
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return CMD_SUCCESS;
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}
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DEFPY (tc_filter_rate,
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tc_filter_rate_cmd,
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"sharp tc dev IFNAME$ifname \
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source <A.B.C.D/M|X:X::X:X/M>$src \
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destination <A.B.C.D/M|X:X::X:X/M>$dst \
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ip-protocol <tcp|udp>$ip_proto \
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src-port (1-65535)$src_port \
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dst-port (1-65535)$dst_port \
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rate RATE$ratestr",
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SHARP_STR
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"Traffic control\n"
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"TC interface (for qdisc, class, filter)\n"
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"TC interface name\n"
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"TC filter source\n"
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"TC filter source IPv4 prefix\n"
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"TC filter source IPv6 prefix\n"
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"TC filter destination\n"
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"TC filter destination IPv4 prefix\n"
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"TC filter destination IPv6 prefix\n"
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"TC filter IP protocol\n"
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"TC filter IP protocol TCP\n"
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"TC filter IP protocol UDP\n"
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"TC filter source port\n"
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"TC filter source port\n"
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"TC filter destination port\n"
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"TC filter destination port\n"
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"TC rate\n"
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"TC rate number (bits/s) or rate string (suffixed with Bps or bit)\n")
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{
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struct interface *ifp;
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struct protoent *p;
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uint64_t rate;
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ifp = if_lookup_vrf_all(ifname);
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if (!ifp) {
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vty_out(vty, "%% Can't find interface %s\n", ifname);
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return CMD_WARNING;
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}
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p = getprotobyname(ip_proto);
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if (!p) {
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vty_out(vty, "Unable to convert %s to proto id\n", ip_proto);
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return CMD_WARNING;
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}
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if (tc_getrate(ratestr, &rate) != 0) {
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vty_out(vty, "Unable to convert %s to rate\n", ratestr);
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return CMD_WARNING;
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}
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if (sharp_zebra_send_tc_filter_rate(ifp, src, dst, p->p_proto, src_port,
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dst_port, rate) != 0)
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return CMD_WARNING;
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return CMD_SUCCESS;
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}
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void sharp_vty_init(void)
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{
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install_element(ENABLE_NODE, &install_routes_data_dump_cmd);
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@ -1374,5 +1433,7 @@ void sharp_vty_init(void)
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install_element(ENABLE_NODE, &sharp_interface_protodown_cmd);
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install_element(ENABLE_NODE, &no_sharp_interface_protodown_cmd);
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install_element(ENABLE_NODE, &tc_filter_rate_cmd);
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return;
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}
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@ -31,6 +31,7 @@
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#include "nexthop.h"
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#include "nexthop_group.h"
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#include "link_state.h"
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#include "tc.h"
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#include "sharp_globals.h"
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#include "sharp_nht.h"
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@ -302,8 +303,8 @@ static bool route_add(const struct prefix *p, vrf_id_t vrf_id, uint8_t instance,
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memcpy(api.opaque.data, opaque, api.opaque.length);
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}
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if (zclient_route_send(ZEBRA_ROUTE_ADD, zclient, &api)
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== ZCLIENT_SEND_BUFFERED)
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if (zclient_route_send(ZEBRA_ROUTE_ADD, zclient, &api) ==
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ZCLIENT_SEND_BUFFERED)
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return true;
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else
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return false;
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@ -326,8 +327,8 @@ static bool route_delete(struct prefix *p, vrf_id_t vrf_id, uint8_t instance)
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api.instance = instance;
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memcpy(&api.prefix, p, sizeof(*p));
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if (zclient_route_send(ZEBRA_ROUTE_DELETE, zclient, &api)
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== ZCLIENT_SEND_BUFFERED)
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if (zclient_route_send(ZEBRA_ROUTE_DELETE, zclient, &api) ==
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ZCLIENT_SEND_BUFFERED)
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return true;
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else
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return false;
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@ -360,7 +361,7 @@ static void sharp_install_routes_restart(struct prefix *p, uint32_t count,
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if (buffered) {
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wb.p = *p;
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wb.count = i+1;
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wb.count = i + 1;
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wb.routes = routes;
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wb.vrf_id = vrf_id;
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wb.instance = instance;
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@ -447,17 +448,16 @@ static void handle_repeated(bool installed)
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if (installed) {
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sg.r.removed_routes = 0;
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sharp_remove_routes_helper(&p, sg.r.vrf_id,
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sg.r.inst, sg.r.total_routes);
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sharp_remove_routes_helper(&p, sg.r.vrf_id, sg.r.inst,
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sg.r.total_routes);
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}
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if (!installed) {
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sg.r.installed_routes = 0;
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sharp_install_routes_helper(&p, sg.r.vrf_id, sg.r.inst,
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sg.r.nhgid, &sg.r.nhop_group,
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&sg.r.backup_nhop_group,
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sg.r.total_routes, sg.r.flags,
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sg.r.opaque);
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sharp_install_routes_helper(
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&p, sg.r.vrf_id, sg.r.inst, sg.r.nhgid,
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&sg.r.nhop_group, &sg.r.backup_nhop_group,
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sg.r.total_routes, sg.r.flags, sg.r.opaque);
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}
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}
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@ -467,8 +467,7 @@ static void sharp_zclient_buffer_ready(void)
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case SHARP_INSTALL_ROUTES_RESTART:
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sharp_install_routes_restart(
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&wb.p, wb.count, wb.vrf_id, wb.instance, wb.nhgid,
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wb.nhg, wb.backup_nhg, wb.routes, wb.flags,
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wb.opaque);
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wb.nhg, wb.backup_nhg, wb.routes, wb.flags, wb.opaque);
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return;
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case SHARP_DELETE_ROUTES_RESTART:
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sharp_remove_routes_restart(&wb.p, wb.count, wb.vrf_id,
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@ -484,8 +483,8 @@ static int route_notify_owner(ZAPI_CALLBACK_ARGS)
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enum zapi_route_notify_owner note;
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uint32_t table;
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if (!zapi_route_notify_decode(zclient->ibuf, &p, &table, ¬e,
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NULL, NULL))
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if (!zapi_route_notify_decode(zclient->ibuf, &p, &table, ¬e, NULL,
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NULL))
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return -1;
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switch (note) {
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@ -574,8 +573,8 @@ void nhg_add(uint32_t id, const struct nexthop_group *nhg,
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}
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if (api_nhg.nexthop_num == 0) {
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zlog_debug("%s: nhg %u not sent: no valid nexthops",
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__func__, id);
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zlog_debug("%s: nhg %u not sent: no valid nexthops", __func__,
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id);
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is_valid = false;
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goto done;
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}
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@ -635,8 +634,7 @@ void sharp_zebra_nexthop_watch(struct prefix *p, vrf_id_t vrf_id, bool import,
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command = ZEBRA_NEXTHOP_UNREGISTER;
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if (zclient_send_rnh(zclient, command, p, SAFI_UNICAST, connected,
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false, vrf_id)
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== ZCLIENT_SEND_FAILURE)
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false, vrf_id) == ZCLIENT_SEND_FAILURE)
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zlog_warn("%s: Failure to send nexthop to zebra", __func__);
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}
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@ -645,8 +643,7 @@ static int sharp_debug_nexthops(struct zapi_route *api)
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int i;
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if (api->nexthop_num == 0) {
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zlog_debug(
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" Not installed");
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zlog_debug(" Not installed");
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return 0;
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}
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@ -711,8 +708,8 @@ static int sharp_redistribute_route(ZAPI_CALLBACK_ARGS)
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zlog_warn("%s: Decode of redistribute failed: %d", __func__,
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ZEBRA_REDISTRIBUTE_ROUTE_ADD);
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zlog_debug("%s: %pFX (%s)", zserv_command_string(cmd),
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&api.prefix, zebra_route_string(api.type));
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zlog_debug("%s: %pFX (%s)", zserv_command_string(cmd), &api.prefix,
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zebra_route_string(api.type));
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sharp_debug_nexthops(&api);
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@ -784,9 +781,9 @@ int sharp_zclient_delete(uint32_t session_id)
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return 0;
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}
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static const char *const type2txt[] = { "Generic", "Vertex", "Edge", "Subnet" };
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static const char *const status2txt[] = { "Unknown", "New", "Update",
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"Delete", "Sync", "Orphan"};
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static const char *const type2txt[] = {"Generic", "Vertex", "Edge", "Subnet"};
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static const char *const status2txt[] = {"Unknown", "New", "Update",
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"Delete", "Sync", "Orphan"};
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/* Handler for opaque messages */
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static int sharp_opaque_handler(ZAPI_CALLBACK_ARGS)
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{
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@ -809,8 +806,7 @@ static int sharp_opaque_handler(ZAPI_CALLBACK_ARGS)
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status2txt[lse->status],
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type2txt[lse->type]);
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lse->status = SYNC;
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}
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else
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} else
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zlog_debug(
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"%s: Error to convert Stream into Link State",
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__func__);
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@ -847,12 +843,11 @@ void sharp_opaque_send(uint32_t type, uint32_t proto, uint32_t instance,
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instance, session_id,
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buf, sizeof(buf));
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if (ret == ZCLIENT_SEND_FAILURE) {
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zlog_debug("%s: send_opaque() failed => %d",
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__func__, ret);
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zlog_debug("%s: send_opaque() failed => %d", __func__,
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ret);
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break;
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}
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}
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}
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/*
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@ -883,7 +878,6 @@ void sharp_opaque_reg_send(bool is_reg, uint32_t proto, uint32_t instance,
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stream_putw_at(s, 0, stream_get_endp(s));
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(void)zclient_send_message(zclient);
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}
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/* Link State registration */
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@ -985,6 +979,64 @@ int sharp_zebra_send_interface_protodown(struct interface *ifp, bool down)
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return 0;
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}
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int sharp_zebra_send_tc_filter_rate(struct interface *ifp,
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const struct prefix *source,
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const struct prefix *destination,
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uint8_t ip_proto, uint16_t src_port,
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uint16_t dst_port, uint64_t rate)
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{
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#define SHARPD_TC_HANDLE 0x0001
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struct stream *s;
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s = zclient->obuf;
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struct tc_qdisc q = {.ifindex = ifp->ifindex, .kind = TC_QDISC_HTB};
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zapi_tc_qdisc_encode(ZEBRA_TC_QDISC_INSTALL, s, &q);
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if (zclient_send_message(zclient) == ZCLIENT_SEND_FAILURE)
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return -1;
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struct tc_class c = {.ifindex = ifp->ifindex,
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.handle = SHARPD_TC_HANDLE & 0xffff,
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.kind = TC_QDISC_HTB,
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.u.htb.ceil = rate,
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.u.htb.rate = rate};
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zapi_tc_class_encode(ZEBRA_TC_CLASS_ADD, s, &c);
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if (zclient_send_message(zclient) == ZCLIENT_SEND_FAILURE)
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return -1;
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struct tc_filter f = {.ifindex = ifp->ifindex,
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.handle = SHARPD_TC_HANDLE,
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.priority = 0x1,
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.kind = TC_FILTER_FLOWER,
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.u.flower.filter_bm = 0};
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#ifdef ETH_P_IP
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f.protocol = ETH_P_IP;
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#else
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f.protocol = 0x0800;
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#endif
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f.u.flower.filter_bm |= TC_FLOWER_IP_PROTOCOL;
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f.u.flower.ip_proto = ip_proto;
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f.u.flower.filter_bm |= TC_FLOWER_SRC_IP;
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prefix_copy(&f.u.flower.src_ip, source);
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f.u.flower.filter_bm |= TC_FLOWER_DST_IP;
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prefix_copy(&f.u.flower.dst_ip, destination);
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f.u.flower.filter_bm |= TC_FLOWER_SRC_PORT;
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f.u.flower.src_port_min = f.u.flower.src_port_max = src_port;
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f.u.flower.filter_bm |= TC_FLOWER_DST_PORT;
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f.u.flower.dst_port_min = f.u.flower.dst_port_max = dst_port;
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f.u.flower.classid = SHARPD_TC_HANDLE & 0xffff;
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zapi_tc_filter_encode(ZEBRA_TC_FILTER_ADD, s, &f);
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if (zclient_send_message(zclient) == ZCLIENT_SEND_FAILURE)
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return -1;
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return 0;
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}
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static zclient_handler *const sharp_handlers[] = {
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[ZEBRA_INTERFACE_ADDRESS_ADD] = interface_address_add,
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[ZEBRA_INTERFACE_ADDRESS_DELETE] = interface_address_delete,
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@ -1002,8 +1054,8 @@ void sharp_zebra_init(void)
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{
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struct zclient_options opt = {.receive_notify = true};
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if_zapi_callbacks(sharp_ifp_create, sharp_ifp_up,
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sharp_ifp_down, sharp_ifp_destroy);
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if_zapi_callbacks(sharp_ifp_create, sharp_ifp_up, sharp_ifp_down,
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sharp_ifp_destroy);
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zclient = zclient_new(master, &opt, sharp_handlers,
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array_size(sharp_handlers));
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@ -75,4 +75,9 @@ extern void sharp_install_seg6local_route_helper(struct prefix *p,
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extern int sharp_zebra_send_interface_protodown(struct interface *ifp,
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bool down);
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extern int sharp_zebra_send_tc_filter_rate(struct interface *ifp,
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const struct prefix *source,
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const struct prefix *destination,
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uint8_t ip_proto, uint16_t src_port,
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uint16_t dst_port, uint64_t rate);
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#endif
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