443 lines
16 KiB
Diff
443 lines
16 KiB
Diff
From 94f2e0c57d2668666f868cb32984e7833be8f296 Mon Sep 17 00:00:00 2001
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From: Lemmy Huang <huangliming5@huawei.com>
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Date: Wed, 15 Mar 2023 11:17:23 +0800
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Subject: [PATCH 2/2] refactor kernel_wait of epoll
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Signed-off-by: Lemmy Huang <huangliming5@huawei.com>
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---
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src/common/gazelle_dfx_msg.h | 5 +-
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src/common/gazelle_opt.h | 2 +
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src/lstack/api/lstack_epoll.c | 42 ++++-------
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src/lstack/core/dir.mk | 3 +-
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src/lstack/core/lstack_kernel_wait.c | 86 ++++++++++++++++++++++
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src/lstack/core/lstack_protocol_stack.c | 51 +------------
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src/lstack/include/lstack_kernel_wait.h | 35 +++++++++
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src/lstack/include/lstack_protocol_stack.h | 6 +-
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8 files changed, 147 insertions(+), 83 deletions(-)
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create mode 100644 src/lstack/core/lstack_kernel_wait.c
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create mode 100644 src/lstack/include/lstack_kernel_wait.h
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diff --git a/src/common/gazelle_dfx_msg.h b/src/common/gazelle_dfx_msg.h
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index 674f2d7..7f75d12 100644
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--- a/src/common/gazelle_dfx_msg.h
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+++ b/src/common/gazelle_dfx_msg.h
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@@ -17,12 +17,11 @@
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#include <stdint.h>
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#include <sys/stat.h>
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+#include "gazelle_opt.h"
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+
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#define GAZELLE_CLIENT_NUM_MIN 1
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#define GAZELLE_LOG_LEVEL_MAX 10
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-/* maybe it should be consistent with MEMP_NUM_TCP_PCB */
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-#define GAZELLE_LSTACK_MAX_CONN (20000 + 2000) // same as MAX_CLIENTS + RESERVED_CLIENTS in lwipopts.h
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-
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enum GAZELLE_STAT_MODE {
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GAZELLE_STAT_LTRAN_SHOW = 0,
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GAZELLE_STAT_LTRAN_SHOW_RATE,
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diff --git a/src/common/gazelle_opt.h b/src/common/gazelle_opt.h
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index 76b89ce..fb903af 100644
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--- a/src/common/gazelle_opt.h
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+++ b/src/common/gazelle_opt.h
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@@ -25,6 +25,8 @@
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#define PROTOCOL_STACK_MAX 32
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#define KERNEL_EPOLL_MAX 512
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+/* it should be consistent with MEMP_NUM_TCP_PCB in lwipopts.h */
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+#define GAZELLE_LSTACK_MAX_CONN (20000 + 2000)
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#define ETHER_ADDR_LEN 6
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diff --git a/src/lstack/api/lstack_epoll.c b/src/lstack/api/lstack_epoll.c
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index da29590..39cc3de 100644
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--- a/src/lstack/api/lstack_epoll.c
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+++ b/src/lstack/api/lstack_epoll.c
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@@ -35,6 +35,7 @@
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#include "lstack_lwip.h"
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#include "lstack_protocol_stack.h"
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#include "posix/lstack_epoll.h"
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+#include "lstack_kernel_wait.h"
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#define EPOLL_KERNEL_INTERVAL 10 /* ms */
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#define SEC_TO_NSEC 1000000000
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@@ -43,8 +44,6 @@
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#define POLL_KERNEL_EVENTS 32
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static void update_epoll_max_stack(struct wakeup_poll *wakeup);
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-static void change_epollfd_kernel_thread(struct wakeup_poll *wakeup, struct protocol_stack *old_stack,
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- struct protocol_stack *new_stack);
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void add_sock_event(struct lwip_sock *sock, uint32_t event)
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{
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@@ -167,6 +166,11 @@ static void raise_pending_events(struct wakeup_poll *wakeup, struct lwip_sock *s
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}
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}
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+static struct kernel_wait *get_stack_knwait(struct protocol_stack *stack)
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+{
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+ return stack == NULL ? NULL : &stack->knwait;
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+}
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+
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int32_t lstack_do_epoll_create(int32_t fd)
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{
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if (fd < 0) {
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@@ -213,7 +217,8 @@ int32_t lstack_do_epoll_create(int32_t fd)
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sock->wakeup = wakeup;
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update_epoll_max_stack(wakeup);
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- change_epollfd_kernel_thread(wakeup, wakeup->bind_stack, wakeup->max_stack);
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+ kernel_wait_change_thread(wakeup, get_stack_knwait(wakeup->bind_stack),
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+ get_stack_knwait(wakeup->max_stack));
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wakeup->bind_stack = wakeup->max_stack;
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if (get_global_cfg_params()->app_bind_numa) {
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bind_to_stack_numa(wakeup->bind_stack);
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@@ -431,29 +436,12 @@ static int32_t poll_lwip_event(struct pollfd *fds, nfds_t nfds)
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return event_num;
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}
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-static void change_epollfd_kernel_thread(struct wakeup_poll *wakeup, struct protocol_stack *old_stack,
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- struct protocol_stack *new_stack)
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-{
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- if (old_stack) {
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- if (posix_api->epoll_ctl_fn(old_stack->epollfd, EPOLL_CTL_DEL, wakeup->epollfd, NULL) != 0) {
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- LSTACK_LOG(ERR, LSTACK, "epoll_ctl_fn errno=%d\n", errno);
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- }
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- }
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-
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- /* avoid kernel thread post too much, use EPOLLET */
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- struct epoll_event event;
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- event.data.ptr = wakeup;
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- event.events = EPOLLIN | EPOLLOUT | EPOLLERR | EPOLLHUP | EPOLLET;
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- if (posix_api->epoll_ctl_fn(new_stack->epollfd, EPOLL_CTL_ADD, wakeup->epollfd, &event) != 0) {
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- LSTACK_LOG(ERR, LSTACK, "epoll_ctl_fn errno=%d\n", errno);
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- }
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-}
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-
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static void epoll_bind_statck(struct wakeup_poll *wakeup)
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{
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if (wakeup->bind_stack != wakeup->max_stack && wakeup->max_stack) {
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bind_to_stack_numa(wakeup->max_stack);
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- change_epollfd_kernel_thread(wakeup, wakeup->bind_stack, wakeup->max_stack);
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+ kernel_wait_change_thread(wakeup, get_stack_knwait(wakeup->bind_stack),
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+ get_stack_knwait(wakeup->max_stack));
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wakeup->bind_stack = wakeup->max_stack;
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}
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}
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@@ -555,7 +543,8 @@ static int32_t init_poll_wakeup_data(struct wakeup_poll *wakeup)
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int32_t stack_count[PROTOCOL_STACK_MAX] = {0};
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uint16_t bind_id = find_max_cnt_stack(stack_count, stack_group->stack_num, wakeup->bind_stack);
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- change_epollfd_kernel_thread(wakeup, wakeup->bind_stack, stack_group->stacks[bind_id]);
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+ kernel_wait_change_thread(wakeup, get_stack_knwait(wakeup->bind_stack),
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+ get_stack_knwait(stack_group->stacks[bind_id]));
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wakeup->bind_stack = stack_group->stacks[bind_id];
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if (get_global_cfg_params()->app_bind_numa) {
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bind_to_stack_numa(wakeup->bind_stack);
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@@ -585,7 +574,7 @@ static void resize_kernel_poll(struct wakeup_poll *wakeup, nfds_t nfds)
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wakeup->last_max_nfds = nfds;
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}
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-static void poll_bind_statck(struct wakeup_poll *wakeup, int32_t *stack_count)
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+static void poll_bind_stack(struct wakeup_poll *wakeup, int32_t *stack_count)
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{
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struct protocol_stack_group *stack_group = get_protocol_stack_group();
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@@ -594,7 +583,8 @@ static void poll_bind_statck(struct wakeup_poll *wakeup, int32_t *stack_count)
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return;
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}
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- change_epollfd_kernel_thread(wakeup, wakeup->bind_stack, stack_group->stacks[bind_id]);
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+ kernel_wait_change_thread(wakeup, get_stack_knwait(wakeup->bind_stack),
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+ get_stack_knwait(stack_group->stacks[bind_id]));
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bind_to_stack_numa(stack_group->stacks[bind_id]);
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wakeup->bind_stack = stack_group->stacks[bind_id];
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}
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@@ -663,7 +653,7 @@ static void poll_init(struct wakeup_poll *wakeup, struct pollfd *fds, nfds_t nfd
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wakeup->last_nfds = nfds;
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if (get_global_cfg_params()->app_bind_numa) {
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- poll_bind_statck(wakeup, stack_count);
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+ poll_bind_stack(wakeup, stack_count);
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}
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}
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diff --git a/src/lstack/core/dir.mk b/src/lstack/core/dir.mk
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index 88c1e08..0908f73 100644
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--- a/src/lstack/core/dir.mk
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+++ b/src/lstack/core/dir.mk
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@@ -8,6 +8,7 @@
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# PURPOSE.
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# See the Mulan PSL v2 for more details.
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-SRC = lstack_init.c lstack_cfg.c lstack_dpdk.c lstack_control_plane.c lstack_stack_stat.c lstack_lwip.c lstack_protocol_stack.c lstack_thread_rpc.c
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+SRC = lstack_init.c lstack_cfg.c lstack_dpdk.c lstack_control_plane.c lstack_stack_stat.c lstack_lwip.c \
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+ lstack_protocol_stack.c lstack_thread_rpc.c lstack_kernel_wait.c
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$(eval $(call register_dir, core, $(SRC)))
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diff --git a/src/lstack/core/lstack_kernel_wait.c b/src/lstack/core/lstack_kernel_wait.c
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new file mode 100644
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index 0000000..9da4f59
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--- /dev/null
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+++ b/src/lstack/core/lstack_kernel_wait.c
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@@ -0,0 +1,86 @@
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+/*
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+* Copyright (c) Huawei Technologies Co., Ltd. 2020-2021. All rights reserved.
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+* gazelle is licensed under the Mulan PSL v2.
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+* You can use this software according to the terms and conditions of the Mulan PSL v2.
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+* You may obtain a copy of Mulan PSL v2 at:
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+* http://license.coscl.org.cn/MulanPSL2
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+* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR
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+* IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
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+* PURPOSE.
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+* See the Mulan PSL v2 for more details.
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+*/
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+
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+#include <sys/socket.h>
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+#include <lwip/posix_api.h>
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+
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+#include "lstack_log.h"
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+#include "lstack_kernel_wait.h"
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+#include "lstack_protocol_stack.h"
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+#include "posix/lstack_epoll.h"
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+
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+#define KERNEL_EVENT_100us 100
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+
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+void kernel_wait_change_thread(struct wakeup_poll *wakeup, struct kernel_wait *old_knwait,
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+ struct kernel_wait *new_knwait)
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+{
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+ if (old_knwait) {
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+ if (posix_api->epoll_ctl_fn(old_knwait->epollfd, EPOLL_CTL_DEL, wakeup->epollfd, NULL) != 0) {
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+ LSTACK_LOG(ERR, LSTACK, "epoll_ctl_fn errno=%d\n", errno);
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+ }
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+ }
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+
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+ /* avoid kernel thread post too much, use EPOLLET */
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+ struct epoll_event event;
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+ event.data.ptr = wakeup;
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+ event.events = EPOLLIN | EPOLLOUT | EPOLLERR | EPOLLHUP | EPOLLET;
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+ if (posix_api->epoll_ctl_fn(new_knwait->epollfd, EPOLL_CTL_ADD, wakeup->epollfd, &event) != 0) {
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+ LSTACK_LOG(ERR, LSTACK, "epoll_ctl_fn errno=%d\n", errno);
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+ }
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+}
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+
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+void wakeup_kernel_wait(struct kernel_wait *knwait, struct list_node *wakeup_list, uint16_t queue_id)
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+{
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+ if (knwait->kernel_event_num == 0) {
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+ return;
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+ }
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+
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+ for (int32_t i = 0; i < knwait->kernel_event_num; i++) {
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+ struct wakeup_poll *wakeup = knwait->kernel_events[i].data.ptr;
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+ if (wakeup->type == WAKEUP_CLOSE) {
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+ continue;
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+ }
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+
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+ __atomic_store_n(&wakeup->have_kernel_event, true, __ATOMIC_RELEASE);
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+ if (list_is_null(&wakeup->wakeup_list[queue_id])) {
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+ list_add_node(wakeup_list, &wakeup->wakeup_list[queue_id]);
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+ }
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+ }
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+
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+ knwait->kernel_event_num = 0;
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+}
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+
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+void* kernel_wait_thread(void *arg)
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+{
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+ uint16_t queue_id = *(uint16_t *)arg;
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+ struct protocol_stack *stack = get_protocol_stack_group()->stacks[queue_id];
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+ struct kernel_wait *knwait = &stack->knwait;
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+
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+ bind_to_stack_numa(stack);
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+
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+ knwait->epollfd = posix_api->epoll_create_fn(GAZELLE_LSTACK_MAX_CONN);
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+ if (knwait->epollfd < 0) {
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+ LSTACK_LOG(ERR, LSTACK, "epoll_create_fn errno=%d\n", errno);
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+ return NULL;
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+ }
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+
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+ LSTACK_LOG(INFO, LSTACK, "kernelevent_%02hu start\n", queue_id);
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+
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+ for (;;) {
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+ knwait->kernel_event_num = posix_api->epoll_wait_fn(knwait->epollfd, knwait->kernel_events, KERNEL_EPOLL_MAX, -1);
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+ while (knwait->kernel_event_num > 0) {
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+ usleep(KERNEL_EVENT_100us);
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+ }
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+ }
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+
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+ return NULL;
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+}
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\ No newline at end of file
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diff --git a/src/lstack/core/lstack_protocol_stack.c b/src/lstack/core/lstack_protocol_stack.c
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index 93204d1..d78eec2 100644
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--- a/src/lstack/core/lstack_protocol_stack.c
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+++ b/src/lstack/core/lstack_protocol_stack.c
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@@ -36,8 +36,6 @@
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#include "posix/lstack_epoll.h"
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#include "lstack_stack_stat.h"
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-#define KERNEL_EVENT_100us 100
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-
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static PER_THREAD struct protocol_stack *g_stack_p = NULL;
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static struct protocol_stack_group g_stack_group = {0};
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@@ -250,25 +248,6 @@ static void* gazelle_wakeup_thread(void *arg)
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return NULL;
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}
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-static void* gazelle_kernelevent_thread(void *arg)
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-{
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- uint16_t queue_id = *(uint16_t *)arg;
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- struct protocol_stack *stack = get_protocol_stack_group()->stacks[queue_id];
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-
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- bind_to_stack_numa(stack);
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-
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- LSTACK_LOG(INFO, LSTACK, "kernelevent_%02hu start\n", queue_id);
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-
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- for (;;) {
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- stack->kernel_event_num = posix_api->epoll_wait_fn(stack->epollfd, stack->kernel_events, KERNEL_EPOLL_MAX, -1);
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- while (stack->kernel_event_num > 0) {
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- usleep(KERNEL_EVENT_100us);
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- }
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- }
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-
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- return NULL;
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-}
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-
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static int32_t init_stack_value(struct protocol_stack *stack, uint16_t queue_id)
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{
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struct protocol_stack_group *stack_group = get_protocol_stack_group();
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@@ -288,11 +267,6 @@ static int32_t init_stack_value(struct protocol_stack *stack, uint16_t queue_id)
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stack_group->stacks[queue_id] = stack;
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set_stack_idx(queue_id);
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- stack->epollfd = posix_api->epoll_create_fn(GAZELLE_LSTACK_MAX_CONN);
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- if (stack->epollfd < 0) {
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- return -1;
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- }
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-
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stack->socket_id = numa_node_of_cpu(stack->cpu_id);
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if (stack->socket_id < 0) {
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LSTACK_LOG(ERR, LSTACK, "numa_node_of_cpu failed\n");
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@@ -327,7 +301,7 @@ static int32_t create_affiliate_thread(uint16_t queue_id, bool wakeup_enable)
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}
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}
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- if (create_thread(queue_id, "gazellekernel", gazelle_kernelevent_thread) != 0) {
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+ if (create_thread(queue_id, "gazellekernel", kernel_wait_thread) != 0) {
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LSTACK_LOG(ERR, LSTACK, "gazellekernel errno=%d\n", errno);
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return -1;
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}
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@@ -390,27 +364,6 @@ END:
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return NULL;
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}
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-static void wakeup_kernel_event(struct protocol_stack *stack)
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-{
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- if (stack->kernel_event_num == 0) {
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- return;
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- }
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-
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- for (int32_t i = 0; i < stack->kernel_event_num; i++) {
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- struct wakeup_poll *wakeup = stack->kernel_events[i].data.ptr;
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- if (wakeup->type == WAKEUP_CLOSE) {
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- continue;
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- }
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-
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- __atomic_store_n(&wakeup->have_kernel_event, true, __ATOMIC_RELEASE);
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- if (list_is_null(&wakeup->wakeup_list[stack->queue_id])) {
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- list_add_node(&stack->wakeup_list, &wakeup->wakeup_list[stack->queue_id]);
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- }
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- }
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-
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- stack->kernel_event_num = 0;
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-}
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-
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void stack_send_pkts(struct protocol_stack *stack)
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{
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uint32_t send_num = stack->send_end - stack->send_start;
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@@ -492,7 +445,7 @@ static void* gazelle_stack_thread(void *arg)
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read_recv_list(stack, read_connect_number);
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if ((wakeup_tick & 0xf) == 0) {
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- wakeup_kernel_event(stack);
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+ wakeup_kernel_wait(&stack->knwait, &stack->wakeup_list, stack->queue_id);
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wakeup_stack_epoll(stack, wakeup_thread_enable);
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}
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diff --git a/src/lstack/include/lstack_kernel_wait.h b/src/lstack/include/lstack_kernel_wait.h
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new file mode 100644
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index 0000000..76bb823
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--- /dev/null
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+++ b/src/lstack/include/lstack_kernel_wait.h
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@@ -0,0 +1,35 @@
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+/*
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+* Copyright (c) Huawei Technologies Co., Ltd. 2020-2021. All rights reserved.
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+* gazelle is licensed under the Mulan PSL v2.
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+* You can use this software according to the terms and conditions of the Mulan PSL v2.
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+* You may obtain a copy of Mulan PSL v2 at:
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+* http://license.coscl.org.cn/MulanPSL2
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+* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR
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+* IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
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+* PURPOSE.
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+* See the Mulan PSL v2 for more details.
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+*/
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+
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+#ifndef _GAZELLE_KERNEL_WAIT_H_
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+#define _GAZELLE_KERNEL_WAIT_H_
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+
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+#include <sys/epoll.h>
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+#include <lwip/list.h>
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+
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+#include "gazelle_opt.h"
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|
+
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+struct wakeup_poll;
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|
+struct kernel_wait {
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+ /* kernel event thread epoll fd */
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+ int32_t epollfd;
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|
+ /* kernel event thread read/write frequently */
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|
+ int32_t kernel_event_num;
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+ struct epoll_event kernel_events[KERNEL_EPOLL_MAX];
|
|
+};
|
|
+
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|
+void kernel_wait_change_thread(struct wakeup_poll *wakeup, struct kernel_wait *old_knwait,
|
|
+ struct kernel_wait *new_knwait);
|
|
+void wakeup_kernel_wait(struct kernel_wait *knwait, struct list_node *wakeup_list, uint16_t queue_id);
|
|
+void* kernel_wait_thread(void *arg);
|
|
+
|
|
+#endif /* _GAZELLE_KERNEL_WAIT_H_ */
|
|
diff --git a/src/lstack/include/lstack_protocol_stack.h b/src/lstack/include/lstack_protocol_stack.h
|
|
index b093362..0e79c93 100644
|
|
--- a/src/lstack/include/lstack_protocol_stack.h
|
|
+++ b/src/lstack/include/lstack_protocol_stack.h
|
|
@@ -24,6 +24,7 @@
|
|
#include "lstack_lockless_queue.h"
|
|
#include "lstack_ethdev.h"
|
|
#include "gazelle_opt.h"
|
|
+#include "lstack_kernel_wait.h"
|
|
|
|
#define SOCK_RECV_RING_SIZE (128)
|
|
#define SOCK_RECV_FREE_THRES (32)
|
|
@@ -50,7 +51,6 @@ struct protocol_stack {
|
|
uint16_t socket_id;
|
|
uint16_t cpu_id;
|
|
cpu_set_t idle_cpuset; /* idle cpu in numa of stack, app thread bind to it */
|
|
- int32_t epollfd; /* kernel event thread epoll fd */
|
|
|
|
struct rte_mempool *rxtx_pktmbuf_pool;
|
|
struct rte_ring *rx_ring;
|
|
@@ -64,9 +64,7 @@ struct protocol_stack {
|
|
lockless_queue rpc_queue __rte_cache_aligned;
|
|
char pad __rte_cache_aligned;
|
|
|
|
- /* kernel event thread read/write frequently */
|
|
- struct epoll_event kernel_events[KERNEL_EPOLL_MAX];
|
|
- int32_t kernel_event_num;
|
|
+ struct kernel_wait knwait;
|
|
char pad1 __rte_cache_aligned;
|
|
|
|
struct netif netif;
|
|
--
|
|
2.33.0
|
|
|