diff options
Diffstat (limited to 'zebra/dpdk/zebra_dplane_dpdk.c')
| -rw-r--r-- | zebra/dpdk/zebra_dplane_dpdk.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/zebra/dpdk/zebra_dplane_dpdk.c b/zebra/dpdk/zebra_dplane_dpdk.c new file mode 100644 index 0000000000..a8dfdf86d5 --- /dev/null +++ b/zebra/dpdk/zebra_dplane_dpdk.c @@ -0,0 +1,215 @@ +/* + * Zebra dataplane plugin for DPDK based hw offload + * + * Copyright (C) 2021 Nvidia + * Anuradha Karuppiah + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; see the file COPYING; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" /* Include this explicitly */ +#endif + +#include "lib/libfrr.h" + +#include "zebra/debug.h" +#include "zebra/interface.h" +#include "zebra/zebra_dplane.h" +#include "zebra/debug.h" +#include "zebra/zebra_pbr.h" + +#include "zebra/dpdk/zebra_dplane_dpdk_private.h" + +static const char *plugin_name = "zebra_dplane_dpdk"; + +static struct zd_dpdk_ctx dpdk_ctx_buf, *dpdk_ctx = &dpdk_ctx_buf; +#define dpdk_stat (&dpdk_ctx->stats) + + +void zd_dpdk_stat_show(struct vty *vty) +{ + uint32_t tmp_cnt; + + vty_out(vty, "%30s\n%30s\n", "Dataplane DPDK counters", + "======================="); + +#define ZD_DPDK_SHOW_COUNTER(label, counter) \ + do { \ + tmp_cnt = \ + atomic_load_explicit(&counter, memory_order_relaxed); \ + vty_out(vty, "%28s: %u\n", (label), (tmp_cnt)); \ + } while (0); + + ZD_DPDK_SHOW_COUNTER("PBR rule adds", dpdk_stat->rule_adds); + ZD_DPDK_SHOW_COUNTER("PBR rule dels", dpdk_stat->rule_dels); + ZD_DPDK_SHOW_COUNTER("Ignored updates", dpdk_stat->ignored_updates); +} + + +static void zd_dpdk_rule_add(struct zebra_dplane_ctx *ctx) +{ + /* XXX - place holder */ +} + + +static void zd_dpdk_rule_del(const char *ifname, int in_ifindex, + intptr_t dp_flow_ptr) +{ + + /* XXX - place holder */ +} + + +static void zd_dpdk_rule_update(struct zebra_dplane_ctx *ctx) +{ + enum dplane_op_e op; + int in_ifindex; + intptr_t dp_flow_ptr; + + if (IS_ZEBRA_DEBUG_DPLANE_DPDK_DETAIL) { + zlog_debug("Dplane %s", dplane_op2str(dplane_ctx_get_op(ctx))); + } + + op = dplane_ctx_get_op(ctx); + switch (op) { + case DPLANE_OP_RULE_ADD: + atomic_fetch_add_explicit(&dpdk_stat->rule_adds, 1, + memory_order_relaxed); + zd_dpdk_rule_add(ctx); + break; + + case DPLANE_OP_RULE_UPDATE: + /* delete old rule and install new one */ + atomic_fetch_add_explicit(&dpdk_stat->rule_adds, 1, + memory_order_relaxed); + in_ifindex = dplane_ctx_get_ifindex(ctx); + dp_flow_ptr = dplane_ctx_rule_get_old_dp_flow_ptr(ctx); + zd_dpdk_rule_del(dplane_ctx_rule_get_ifname(ctx), in_ifindex, + dp_flow_ptr); + zd_dpdk_rule_add(ctx); + break; + + case DPLANE_OP_RULE_DELETE: + atomic_fetch_add_explicit(&dpdk_stat->rule_dels, 1, + memory_order_relaxed); + in_ifindex = dplane_ctx_get_ifindex(ctx); + dp_flow_ptr = dplane_ctx_rule_get_dp_flow_ptr(ctx); + zd_dpdk_rule_del(dplane_ctx_rule_get_ifname(ctx), in_ifindex, + dp_flow_ptr); + break; + + default:; + } +} + + +/* DPDK provider callback. + */ +static void zd_dpdk_process_update(struct zebra_dplane_ctx *ctx) +{ + switch (dplane_ctx_get_op(ctx)) { + + case DPLANE_OP_RULE_ADD: + case DPLANE_OP_RULE_UPDATE: + case DPLANE_OP_RULE_DELETE: + zd_dpdk_rule_update(ctx); + break; + + default: + atomic_fetch_add_explicit(&dpdk_stat->ignored_updates, 1, + memory_order_relaxed); + + break; + } +} + + +static int zd_dpdk_process(struct zebra_dplane_provider *prov) +{ + struct zebra_dplane_ctx *ctx; + int counter, limit; + + if (IS_ZEBRA_DEBUG_DPLANE_DPDK_DETAIL) + zlog_debug("processing %s", dplane_provider_get_name(prov)); + + limit = dplane_provider_get_work_limit(prov); + for (counter = 0; counter < limit; counter++) { + ctx = dplane_provider_dequeue_in_ctx(prov); + if (!ctx) + break; + + zd_dpdk_process_update(ctx); + dplane_ctx_set_status(ctx, ZEBRA_DPLANE_REQUEST_SUCCESS); + dplane_provider_enqueue_out_ctx(prov, ctx); + } + + return 0; +} + + +static int zd_dpdk_start(struct zebra_dplane_provider *prov) +{ + if (IS_ZEBRA_DEBUG_DPLANE_DPDK) + zlog_debug("%s start", dplane_provider_get_name(prov)); + + /* XXX - place holder */ + return 0; +} + + +static int zd_dpdk_finish(struct zebra_dplane_provider *prov, bool early) +{ + if (early) { + if (IS_ZEBRA_DEBUG_DPLANE_DPDK) + zlog_debug("%s early finish", + dplane_provider_get_name(prov)); + + return 0; + } + + if (IS_ZEBRA_DEBUG_DPLANE_DPDK) + zlog_debug("%s finish", dplane_provider_get_name(prov)); + + + /* XXX - place holder */ + return 0; +} + + +static int zd_dpdk_plugin_init(struct thread_master *tm) +{ + int ret; + + ret = dplane_provider_register( + plugin_name, DPLANE_PRIO_KERNEL, DPLANE_PROV_FLAGS_DEFAULT, + zd_dpdk_start, zd_dpdk_process, zd_dpdk_finish, dpdk_ctx, NULL); + + if (IS_ZEBRA_DEBUG_DPLANE_DPDK) + zlog_debug("%s register status %d", plugin_name, ret); + + return 0; +} + + +static int zd_dpdk_module_init(void) +{ + hook_register(frr_late_init, zd_dpdk_plugin_init); + return 0; +} + +FRR_MODULE_SETUP(.name = "dplane_dpdk", .version = "0.0.1", + .description = "Data plane plugin using dpdk for hw offload", + .init = zd_dpdk_module_init, ); |