8f34c2760d
project:cfg:BoardConfig_IPC: Added fastboot BoardConfig file and firmware post-scripts, distinguishing between the BoardConfigs for Luckfox Pico Pro and Luckfox Pico Max. project:app: Added fastboot_client and rk_smart_door for quick boot applications; updated rkipc app to adapt to the latest media library. media:samples: Added more usage examples. media:rockit: Fixed bugs; removed support for retrieving data frames from VPSS. media:isp: Updated rkaiq library and related tools to support connection to RKISP_Tuner. sysdrv:Makefile: Added support for compiling drv_ko on Luckfox Pico Ultra W using Ubuntu; added support for custom root filesystem. sysdrv:tools:board: Updated Buildroot optional mirror sources, updated some software versions, and stored device tree files and configuration files that undergo multiple modifications for U-Boot and kernel separately. sysdrv:source:mcu: Used RISC-V MCU SDK with RT-Thread system, mainly for initializing camera AE during quick boot. sysdrv:source:uboot: Added support for fastboot; added high baud rate DDR bin for serial firmware upgrades. sysdrv:source:kernel: Upgraded to version 5.10.160; increased NPU frequency for RV1106G3; added support for fastboot. Signed-off-by: luckfox-eng29 <eng29@luckfox.com>
145 lines
3.4 KiB
C
145 lines
3.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* net busy poll support
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* Copyright(c) 2013 Intel Corporation.
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*
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* Author: Eliezer Tamir
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*
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* Contact Information:
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* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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*/
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#ifndef _LINUX_NET_BUSY_POLL_H
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#define _LINUX_NET_BUSY_POLL_H
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#include <linux/netdevice.h>
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#include <linux/sched/clock.h>
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#include <linux/sched/signal.h>
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#include <net/ip.h>
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/* 0 - Reserved to indicate value not set
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* 1..NR_CPUS - Reserved for sender_cpu
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* NR_CPUS+1..~0 - Region available for NAPI IDs
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*/
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#define MIN_NAPI_ID ((unsigned int)(NR_CPUS + 1))
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#ifdef CONFIG_NET_RX_BUSY_POLL
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struct napi_struct;
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extern unsigned int sysctl_net_busy_read __read_mostly;
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extern unsigned int sysctl_net_busy_poll __read_mostly;
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static inline bool net_busy_loop_on(void)
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{
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return READ_ONCE(sysctl_net_busy_poll);
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}
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static inline bool sk_can_busy_loop(const struct sock *sk)
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{
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return READ_ONCE(sk->sk_ll_usec) && !signal_pending(current);
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}
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bool sk_busy_loop_end(void *p, unsigned long start_time);
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void napi_busy_loop(unsigned int napi_id,
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bool (*loop_end)(void *, unsigned long),
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void *loop_end_arg);
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#else /* CONFIG_NET_RX_BUSY_POLL */
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static inline unsigned long net_busy_loop_on(void)
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{
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return 0;
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}
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static inline bool sk_can_busy_loop(struct sock *sk)
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{
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return false;
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}
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#endif /* CONFIG_NET_RX_BUSY_POLL */
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static inline unsigned long busy_loop_current_time(void)
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{
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#ifdef CONFIG_NET_RX_BUSY_POLL
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return (unsigned long)(local_clock() >> 10);
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#else
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return 0;
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#endif
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}
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/* in poll/select we use the global sysctl_net_ll_poll value */
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static inline bool busy_loop_timeout(unsigned long start_time)
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{
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#ifdef CONFIG_NET_RX_BUSY_POLL
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unsigned long bp_usec = READ_ONCE(sysctl_net_busy_poll);
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if (bp_usec) {
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unsigned long end_time = start_time + bp_usec;
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unsigned long now = busy_loop_current_time();
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return time_after(now, end_time);
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}
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#endif
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return true;
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}
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static inline bool sk_busy_loop_timeout(struct sock *sk,
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unsigned long start_time)
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{
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#ifdef CONFIG_NET_RX_BUSY_POLL
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unsigned long bp_usec = READ_ONCE(sk->sk_ll_usec);
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if (bp_usec) {
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unsigned long end_time = start_time + bp_usec;
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unsigned long now = busy_loop_current_time();
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return time_after(now, end_time);
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}
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#endif
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return true;
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}
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static inline void sk_busy_loop(struct sock *sk, int nonblock)
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{
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#ifdef CONFIG_NET_RX_BUSY_POLL
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unsigned int napi_id = READ_ONCE(sk->sk_napi_id);
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if (napi_id >= MIN_NAPI_ID)
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napi_busy_loop(napi_id, nonblock ? NULL : sk_busy_loop_end, sk);
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#endif
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}
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/* used in the NIC receive handler to mark the skb */
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static inline void skb_mark_napi_id(struct sk_buff *skb,
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struct napi_struct *napi)
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{
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#ifdef CONFIG_NET_RX_BUSY_POLL
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/* If the skb was already marked with a valid NAPI ID, avoid overwriting
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* it.
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*/
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if (skb->napi_id < MIN_NAPI_ID)
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skb->napi_id = napi->napi_id;
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#endif
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}
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/* used in the protocol hanlder to propagate the napi_id to the socket */
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static inline void sk_mark_napi_id(struct sock *sk, const struct sk_buff *skb)
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{
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#ifdef CONFIG_NET_RX_BUSY_POLL
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WRITE_ONCE(sk->sk_napi_id, skb->napi_id);
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#endif
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sk_rx_queue_set(sk, skb);
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}
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/* variant used for unconnected sockets */
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static inline void sk_mark_napi_id_once(struct sock *sk,
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const struct sk_buff *skb)
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{
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#ifdef CONFIG_NET_RX_BUSY_POLL
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if (!READ_ONCE(sk->sk_napi_id))
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WRITE_ONCE(sk->sk_napi_id, skb->napi_id);
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#endif
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}
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#endif /* _LINUX_NET_BUSY_POLL_H */
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