精读鸿蒙内核源码,百万汉字注解分析;百篇博客深入解剖.zip

/* * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved. * Copyright (c) 2020-2022 Huawei Device Co., Ltd. All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this list of * conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, this list * of conditions and the following disclaimer in the documentation and/or other materials * provided with the distribution. * * 3. Neither the name of the copyright holder nor the names of its contributors may be used * to endorse or promote products derived from this software without specific prior written * permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "../core/ipv4/etharp.c" /* for arp_table */ #define icmp6_hdr netinet_icmp6_hdr #include <netinet/icmp6.h> #undef icmp6_hdr #include "lwip/fixme.h" #include "lwip/opt.h" #if LWIP_ENABLE_LOS_SHELL_CMD #include "lwip/api.h" #include "lwip/tcpip.h" #include "lwip/netif.h" #include "lwip/netdb.h" #include "lwip/stats.h" #include "lwip/err.h" #include "lwip/inet.h" #include "netif/etharp.h" #include "lwip/ip_addr.h" #include "lwip/ip6_addr.h" #include "lwip/icmp.h" #include "lwip/priv/nd6_priv.h" #include "lwip/sockets.h" #include "lwip/inet_chksum.h" #include "lwip/raw.h" #include "los_config.h" #include <string.h> #include "limits.h" #include <stdlib.h> #include <stdio.h> #include <errno.h> #include <time.h> #include <ctype.h> #include <poll.h> #include "lwip/api_shell.h" #include "lwip/dns.h" #include "lwip/udp.h" #include "lwip/priv/tcp_priv.h" #include "lwip/dhcp.h" #include "lwip/netifapi.h" #include "los_strnlen_user.h" #include "linux/kernel.h" #ifdef LOSCFG_SHELL #include "shcmd.h" #include "shell.h" #endif #define LWIP_STATIC static #if LWIP_ARP extern sys_sem_t ip_conflict_detect; #endif extern volatile int tcpip_init_finish; extern const char *const tcp_state_str[]; extern int get_unused_socket_num(void); #if LWIP_IPV6 #define LWIP_MAX_PING6_ARG_COUNT 64 #define LWIP_PING6_STANDARD_PKT_SIZE 56 #define LWIP_PING6_STARTING_SEQ_NUM 0x2255 #define LWIP_PING6_OUT_OF_ORDER_MAGNITUDE 1 #define LWIP_PING6_COUNT_ARG 1 #define LWIP_PING6_SOURCE_ADDRESS_ARG 2 #define LWIP_PING6_INTERFACE_ARG 4 #define LWIP_PING6_HOSTNAME_ARG 8 #define LWIP_PING6_DEFAULT_SOCKET 16 #endif /* Forward Declarations [START] */ #ifndef LWIP_TESTBED LWIP_STATIC #endif int print_netif(struct netif *netif, char *print_buf, unsigned int buf_len); #ifndef LWIP_TESTBED LWIP_STATIC #endif void lwip_ifconfig_show_internal(void *arg); #ifndef LWIP_TESTBED LWIP_STATIC #endif void lwip_ifconfig_internal(void *arg); void lwip_printsize(size_t size); LWIP_STATIC void lwip_ifconfig_usage(const char *cmd); #ifndef LWIP_TESTBED LWIP_STATIC #endif void lwip_arp_show_internal(struct netif *netif, char *printf_buf, unsigned int buf_len); #ifndef LWIP_TESTBED LWIP_STATIC #endif void lwip_arp_internal(void *arg); LWIP_STATIC void lwip_arp_usage(const char *cmd); void ifup_internal(void *arg); void ifdown_internal(void *arg); #if LWIP_DNS LWIP_STATIC unsigned int get_hostip(const char *hname); #ifndef LWIP_TESTBED LWIP_STATIC #endif struct hostent *gethostnameinfo(const char *host); #endif /* LWIP_DNS */ #ifdef LWIP_DEBUG_INFO LWIP_STATIC u32_t netdebug_memp(int argc, const char **argv); LWIP_STATIC u32_t netdebug_sock(int argc, const char **argv); u32_t osShellNetDebug(int argc, const char **argv); u32_t osShellIpDebug(int argc, const char **argv); #endif /* LWIP_DEBUG_INFO */ #if LWIP_IPV6 /* Holds params for ping6 task */ typedef struct ping6_args { u8_t args_found; u8_t interface_index; u8_t host_index; u8_t pad; u32_t pingcount; ip6_addr_t src_addr; ip6_addr_t dst_addr; } ping6_args_t; /* Holds stats for ongoing ping6 task */ typedef struct ping6_stats { u32_t flag; u32_t min_rtt; u32_t max_rtt; float avg_rtt; } ping6_stats_t; LWIP_STATIC void update_ping6_stats(ping6_stats_t *ping6_stats, u32_t rtt, u32_t nreceived); LWIP_STATIC int parse_args_ping6(int argc, const char **argv, ping6_args_t *ping6_params); u32_t osShellPing6(int argc, const char **argv); LWIP_STATIC int create_ping6_socket(u8_t type, const void *param); LWIP_STATIC const char *convert_icmpv6_err_to_string(u8_t err_type); #endif /* LWIP_IPV6 */ u32_t osTcpserver(int argc, const char **argv); void udpserver(int argc, const char **argv); void tcp_access(int sockfd); #if LWIP_IPV6 int netstat_get_udp_sendQLen6(struct udp_pcb *udppcb, struct pbuf *udpbuf); int netstat_udp_sendq6(struct udp_pcb *upcb); #endif #if LWIP_IPV4 int netstat_get_udp_sendQLen(struct udp_pcb *udppcb, struct pbuf *udpbuf); #endif int netstat_tcp_sendq(struct tcp_pcb *tpcb); int netstat_tcp_recvq(struct tcp_pcb *tpcb); int netstat_netconn_recvq(const struct netconn *conn); int netstat_udp_sendq(struct udp_pcb *upcb); int netstat_netconn_sendq(struct netconn *conn); /* Forward Declarations [END] */ #define IFCONFIG_OPTION_SET_IP (1) #define IFCONFIG_OPTION_SET_NETMASK (1 << 1) #define IFCONFIG_OPTION_SET_GW (1 << 2) #define IFCONFIG_OPTION_SET_HW (1 << 3) #define IFCONFIG_OPTION_SET_UP (1 << 4) #define IFCONFIG_OPTION_SET_DOWN (1 << 5) #define IFCONFIG_OPTION_SET_MTU (1 << 6) #define IFCONFIG_OPTION_DEL_IP (1 << 7) #define NETSTAT_ENTRY_SIZE 120 #define MAX_NETSTAT_ENTRY (NETSTAT_ENTRY_SIZE * (MEMP_NUM_TCP_PCB + MEMP_NUM_UDP_PCB + MEMP_NUM_TCP_PCB_LISTEN + 1)) #define PRINT_BUF_LEN 1024 #define MAX_MACADDR_STRING_LENGTH 18 /* including NULL */ #define CONVERT_STRING_TO_HEX(_src, _dest) \ { \ const char *_srcString = (char *)_src; \ _dest = 0; \ while (*_srcString) { \ _dest = (unsigned char)((_dest << 4) & 0xFF); \ if ((*_srcString >= 48) && (*_srcString <= 57)) /* between 0 to 9 */ \ _dest |= (unsigned char)(*_srcString - 48); \ else if ((*_srcString >= 65 && *_srcString <= 70)) /* between A to F */ \ _dest |= (unsigned char)((*_srcString - 65) + 10); \ else if ((*_srcString >= 97 && *_srcString <= 102)) /* between a to f */ \ _dest |= (unsigned char)((*_srcString - 97) + 10); \ else break; \ ++_srcString; \ }