[96b39164] | 1 | /* |
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| 2 | * $Id$ |
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| 3 | */ |
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| 4 | |
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[39e6e65a] | 5 | #include <string.h> |
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| 6 | #include <stdarg.h> |
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| 7 | #include <stdio.h> |
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| 8 | #include <errno.h> |
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| 9 | |
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| 10 | #include <rtems.h> |
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| 11 | #include <rtems/libio.h> |
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| 12 | #include <rtems/error.h> |
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| 13 | #include <rtems/rtems_bsdnet.h> |
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| 14 | #include <sys/types.h> |
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| 15 | #include <sys/param.h> |
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| 16 | #include <sys/domain.h> |
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| 17 | #include <sys/mbuf.h> |
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| 18 | #include <sys/socketvar.h> |
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| 19 | #include <sys/socket.h> |
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| 20 | #include <sys/sockio.h> |
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| 21 | #include <sys/callout.h> |
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| 22 | #include <sys/proc.h> |
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[33679ec4] | 23 | #include <sys/ioctl.h> |
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[39e6e65a] | 24 | #include <net/if.h> |
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| 25 | #include <net/route.h> |
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| 26 | #include <netinet/in.h> |
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| 27 | #include <vm/vm.h> |
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| 28 | #include <arpa/inet.h> |
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| 29 | |
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| 30 | #include <net/netisr.h> |
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| 31 | #include <net/route.h> |
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| 32 | |
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| 33 | /* |
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| 34 | * Events used by networking routines. |
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| 35 | * Everything will break if the application |
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| 36 | * tries to use these events or if the `sleep' |
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| 37 | * events are equal to any of the NETISR * events. |
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| 38 | */ |
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| 39 | #define SBWAIT_EVENT RTEMS_EVENT_24 |
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| 40 | #define SOSLEEP_EVENT RTEMS_EVENT_25 |
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| 41 | #define NETISR_IP_EVENT (1 << NETISR_IP) |
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| 42 | #define NETISR_ARP_EVENT (1 << NETISR_ARP) |
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| 43 | #define NETISR_EVENTS (NETISR_IP_EVENT|NETISR_ARP_EVENT) |
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| 44 | |
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| 45 | |
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| 46 | /* |
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| 47 | * Memory allocation |
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| 48 | */ |
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| 49 | static int nmbuf = (64 * 1024) / MSIZE; |
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| 50 | int nmbclusters = (128 * 1024) / MCLBYTES; |
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| 51 | |
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| 52 | /* |
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| 53 | * Socket buffering parameters |
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| 54 | */ |
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| 55 | unsigned long sb_efficiency = 8; |
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| 56 | |
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| 57 | /* |
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| 58 | * Network task synchronization |
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| 59 | */ |
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| 60 | static rtems_id networkSemaphore; |
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| 61 | static rtems_id networkDaemonTid; |
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| 62 | static rtems_unsigned32 networkDaemonPriority; |
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| 63 | static void networkDaemon (void *task_argument); |
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| 64 | |
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| 65 | /* |
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| 66 | * Network timing |
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| 67 | */ |
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| 68 | int rtems_bsdnet_ticks_per_second; |
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| 69 | int rtems_bsdnet_microseconds_per_tick; |
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| 70 | |
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| 71 | /* |
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| 72 | * Callout processing |
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| 73 | */ |
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| 74 | static rtems_interval ticksWhenCalloutsLastChecked; |
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| 75 | static struct callout *callfree, calltodo; |
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| 76 | |
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| 77 | /* |
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| 78 | * FreeBSD variables |
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| 79 | */ |
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| 80 | int nfs_diskless_valid; |
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| 81 | |
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| 82 | /* |
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| 83 | * BOOTP values |
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| 84 | */ |
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| 85 | struct in_addr rtems_bsdnet_log_host_address; |
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| 86 | struct in_addr rtems_bsdnet_bootp_server_address; |
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| 87 | char *rtems_bsdnet_bootp_boot_file_name; |
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| 88 | char *rtems_bsdnet_domain_name; |
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| 89 | struct in_addr rtems_bsdnet_nameserver[sizeof rtems_bsdnet_config.name_server / |
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| 90 | sizeof rtems_bsdnet_config.name_server[0]]; |
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| 91 | int rtems_bsdnet_nameserver_count; |
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| 92 | |
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| 93 | extern rtems_libio_handler_t rtems_bsdnet_io_handler; |
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| 94 | |
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| 95 | /* |
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| 96 | * Perform FreeBSD memory allocation. |
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| 97 | * FIXME: This should be modified to keep memory allocation statistics. |
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| 98 | */ |
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| 99 | #undef malloc |
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| 100 | #undef free |
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| 101 | extern void *malloc (size_t); |
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| 102 | extern void free (void *); |
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| 103 | void * |
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| 104 | rtems_bsdnet_malloc (unsigned long size, int type, int flags) |
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| 105 | { |
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| 106 | void *p; |
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| 107 | |
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| 108 | for (;;) { |
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| 109 | p = malloc (size); |
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| 110 | if (p) |
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| 111 | return p; |
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| 112 | if (flags & M_NOWAIT) |
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| 113 | return p; |
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| 114 | /* |
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| 115 | * FIXME: This should be redone as: |
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| 116 | * static volatile int rtems_bsdnet_need_memory; |
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| 117 | * |
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| 118 | * rtems_bsdnet_need_memory = 1; |
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| 119 | * message_queue_receive |
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| 120 | * |
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| 121 | * Then in rtems_bsdnet_freee: |
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| 122 | * free (....); |
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| 123 | * if (rtems_bsdnet_need_memory) |
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| 124 | * rtems_bsdnet_need_memory = 0; |
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| 125 | * message_queue_broadcast |
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| 126 | */ |
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| 127 | rtems_task_wake_after (rtems_bsdnet_ticks_per_second); |
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| 128 | } |
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| 129 | } |
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| 130 | |
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| 131 | /* |
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| 132 | * Free FreeBSD memory |
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| 133 | * FIXME: This should be modified to keep memory allocation statistics. |
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| 134 | */ |
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| 135 | void |
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| 136 | rtems_bsdnet_free (void *addr, int type) |
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| 137 | { |
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| 138 | free (addr); |
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| 139 | } |
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| 140 | |
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| 141 | /* |
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| 142 | * Do the initializations required by the BSD code |
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| 143 | * FIXME: Maybe we should use a different memory allocation scheme that |
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| 144 | * would let us share space between mbufs and mbuf clusters. |
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| 145 | * For now, we'll just take the easy way out! |
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| 146 | */ |
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| 147 | static void |
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| 148 | bsd_init () |
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| 149 | { |
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| 150 | /* |
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| 151 | * Set up mbuf data strutures |
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| 152 | * Cluster allocation *must* come first -- see comment on kmem_malloc(). |
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| 153 | */ |
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| 154 | m_clalloc (nmbclusters, M_DONTWAIT); |
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| 155 | mclrefcnt = malloc (nmbclusters); |
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| 156 | if (mclrefcnt == NULL) |
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| 157 | rtems_panic ("No memory for mbuf cluster reference counts."); |
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| 158 | memset (mclrefcnt, '\0', nmbclusters); |
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| 159 | m_mballoc (nmbuf, M_DONTWAIT); |
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| 160 | mbstat.m_mtypes[MT_FREE] = nmbuf; |
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| 161 | |
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| 162 | |
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| 163 | /* |
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| 164 | * Set up domains |
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| 165 | */ |
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| 166 | { |
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| 167 | extern struct domain routedomain; |
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| 168 | extern struct domain inetdomain; |
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| 169 | |
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| 170 | routedomain.dom_next = domains; |
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| 171 | domains = &routedomain; |
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| 172 | inetdomain.dom_next = domains; |
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| 173 | domains = &inetdomain; |
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| 174 | domaininit (NULL); |
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| 175 | } |
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| 176 | |
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| 177 | /* |
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| 178 | * Set up interfaces |
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| 179 | */ |
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| 180 | ifinit (NULL); |
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| 181 | } |
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| 182 | |
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| 183 | /* |
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| 184 | * Initialize and start network operations |
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| 185 | */ |
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| 186 | static void |
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| 187 | rtems_bsdnet_initialize (void) |
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| 188 | { |
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| 189 | rtems_status_code sc; |
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| 190 | |
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| 191 | /* |
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| 192 | * Set the priority of all network tasks |
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| 193 | */ |
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| 194 | if (rtems_bsdnet_config.network_task_priority == 0) |
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| 195 | networkDaemonPriority = 100; |
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| 196 | else |
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| 197 | networkDaemonPriority = rtems_bsdnet_config.network_task_priority; |
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| 198 | |
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| 199 | /* |
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| 200 | * Set the memory allocation limits |
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| 201 | */ |
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| 202 | if (rtems_bsdnet_config.mbuf_bytecount) |
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| 203 | nmbuf = rtems_bsdnet_config.mbuf_bytecount / MSIZE; |
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| 204 | if (rtems_bsdnet_config.mbuf_cluster_bytecount) |
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| 205 | nmbclusters = rtems_bsdnet_config.mbuf_cluster_bytecount / MCLBYTES; |
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| 206 | |
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| 207 | /* |
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| 208 | * Create the task-synchronization semaphore |
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| 209 | */ |
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| 210 | sc = rtems_semaphore_create (rtems_build_name('B', 'S', 'D', 'n'), |
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| 211 | 0, |
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| 212 | RTEMS_FIFO | |
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| 213 | RTEMS_BINARY_SEMAPHORE | |
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| 214 | RTEMS_NO_INHERIT_PRIORITY | |
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| 215 | RTEMS_NO_PRIORITY_CEILING | |
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| 216 | RTEMS_LOCAL, |
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| 217 | 0, |
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| 218 | &networkSemaphore); |
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| 219 | if (sc != RTEMS_SUCCESSFUL) |
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| 220 | rtems_panic ("Can't create network seamphore: `%s'\n", rtems_status_text (sc)); |
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| 221 | |
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| 222 | /* |
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| 223 | * Compute clock tick conversion factors |
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| 224 | */ |
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| 225 | rtems_clock_get (RTEMS_CLOCK_GET_TICKS_PER_SECOND, &rtems_bsdnet_ticks_per_second); |
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| 226 | if (rtems_bsdnet_ticks_per_second <= 0) |
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| 227 | rtems_bsdnet_ticks_per_second = 1; |
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| 228 | rtems_bsdnet_microseconds_per_tick = 1000000 / rtems_bsdnet_ticks_per_second; |
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| 229 | |
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| 230 | /* |
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| 231 | * Ensure that `seconds' is greater than 0 |
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| 232 | */ |
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| 233 | rtems_task_wake_after (rtems_bsdnet_ticks_per_second); |
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| 234 | |
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| 235 | /* |
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| 236 | * Set up BSD-style sockets |
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| 237 | */ |
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| 238 | bsd_init (); |
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| 239 | |
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| 240 | /* |
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| 241 | * Start network daemon |
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| 242 | */ |
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| 243 | networkDaemonTid = rtems_bsdnet_newproc ("ntwk", 4096, networkDaemon, NULL); |
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| 244 | |
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| 245 | /* |
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| 246 | * Register as an external I/O handler |
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| 247 | */ |
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| 248 | rtems_register_libio_handler (RTEMS_FILE_DESCRIPTOR_TYPE_SOCKET, |
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| 249 | &rtems_bsdnet_io_handler); |
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| 250 | |
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| 251 | /* |
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| 252 | * Let other network tasks begin |
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| 253 | */ |
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| 254 | rtems_bsdnet_semaphore_release (); |
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| 255 | } |
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| 256 | |
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| 257 | rtems_id TaskWithSemaphore; |
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| 258 | /* |
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| 259 | * Obtain network mutex |
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| 260 | */ |
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| 261 | void |
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| 262 | rtems_bsdnet_semaphore_obtain (void) |
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| 263 | { |
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| 264 | rtems_status_code sc; |
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| 265 | |
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| 266 | sc = rtems_semaphore_obtain (networkSemaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT); |
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| 267 | rtems_task_ident (RTEMS_SELF, 0, &TaskWithSemaphore); |
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| 268 | if (sc != RTEMS_SUCCESSFUL) |
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| 269 | rtems_panic ("Can't obtain network semaphore: `%s'\n", rtems_status_text (sc)); |
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| 270 | } |
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| 271 | |
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| 272 | /* |
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| 273 | * Release network mutex |
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| 274 | */ |
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| 275 | void |
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| 276 | rtems_bsdnet_semaphore_release (void) |
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| 277 | { |
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| 278 | rtems_status_code sc; |
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| 279 | |
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| 280 | TaskWithSemaphore = 0; |
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| 281 | sc = rtems_semaphore_release (networkSemaphore); |
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| 282 | if (sc != RTEMS_SUCCESSFUL) |
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| 283 | rtems_panic ("Can't release network semaphore: `%s'\n", rtems_status_text (sc)); |
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| 284 | } |
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| 285 | |
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| 286 | /* |
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| 287 | * Wait for something to happen to a socket buffer |
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| 288 | */ |
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| 289 | int |
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| 290 | sbwait(sb) |
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| 291 | struct sockbuf *sb; |
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| 292 | { |
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| 293 | rtems_event_set events; |
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| 294 | rtems_id tid; |
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| 295 | rtems_status_code sc; |
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| 296 | |
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| 297 | /* |
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| 298 | * Soak up any pending events. |
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| 299 | * The sleep/wakeup synchronization in the FreeBSD |
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| 300 | * kernel has no memory. |
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| 301 | */ |
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| 302 | rtems_event_receive (SBWAIT_EVENT, RTEMS_EVENT_ANY | RTEMS_NO_WAIT, RTEMS_NO_TIMEOUT, &events); |
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| 303 | |
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| 304 | /* |
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| 305 | * Set this task as the target of the wakeup operation. |
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| 306 | */ |
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| 307 | if (sb->sb_sel.si_pid) |
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| 308 | rtems_panic ("Another task is already sleeping on that socket buffer"); |
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| 309 | rtems_task_ident (RTEMS_SELF, 0, &tid); |
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| 310 | sb->sb_sel.si_pid = tid; |
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| 311 | |
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| 312 | /* |
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| 313 | * Mark the socket buffer as waiting. |
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| 314 | */ |
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| 315 | sb->sb_flags |= SB_WAIT; |
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| 316 | |
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| 317 | /* |
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| 318 | * Release the network semaphore. |
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| 319 | */ |
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| 320 | rtems_bsdnet_semaphore_release (); |
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| 321 | |
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| 322 | /* |
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| 323 | * Wait for the wakeup event. |
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| 324 | */ |
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| 325 | sc = rtems_event_receive (SBWAIT_EVENT, RTEMS_EVENT_ANY | RTEMS_WAIT, sb->sb_timeo, &events); |
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| 326 | |
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| 327 | /* |
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| 328 | * Reobtain the network semaphore. |
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| 329 | */ |
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| 330 | rtems_bsdnet_semaphore_obtain (); |
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| 331 | |
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| 332 | /* |
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| 333 | * Relinquish ownership of the socket buffer |
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| 334 | */ |
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| 335 | sb->sb_flags &= ~SB_WAIT; |
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| 336 | sb->sb_sel.si_pid = 0; |
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| 337 | |
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| 338 | /* |
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| 339 | * Return the status of the wait. |
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| 340 | */ |
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| 341 | switch (sc) { |
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| 342 | case RTEMS_SUCCESSFUL: return 0; |
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| 343 | case RTEMS_TIMEOUT: return EWOULDBLOCK; |
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| 344 | default: return ENXIO; |
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| 345 | } |
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| 346 | } |
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| 347 | |
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| 348 | |
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| 349 | /* |
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| 350 | * Wake up the task waiting on a socket buffer. |
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| 351 | */ |
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| 352 | void |
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| 353 | sowakeup(so, sb) |
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| 354 | register struct socket *so; |
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| 355 | register struct sockbuf *sb; |
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| 356 | { |
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| 357 | if (sb->sb_flags & SB_WAIT) { |
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| 358 | sb->sb_flags &= ~SB_WAIT; |
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| 359 | rtems_event_send (sb->sb_sel.si_pid, SBWAIT_EVENT); |
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| 360 | } |
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| 361 | } |
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| 362 | |
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| 363 | /* |
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| 364 | * For now, a socket can be used by only one task at a time. |
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| 365 | */ |
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| 366 | int |
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| 367 | sb_lock(sb) |
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| 368 | register struct sockbuf *sb; |
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| 369 | { |
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| 370 | rtems_panic ("Socket buffer is already in use."); |
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| 371 | return 0; |
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| 372 | } |
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| 373 | void |
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| 374 | wakeup (void *p) |
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| 375 | { |
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| 376 | rtems_panic ("Wakeup called"); |
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| 377 | } |
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| 378 | |
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| 379 | /* |
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| 380 | * Wait for a connection/disconnection event. |
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| 381 | */ |
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| 382 | void |
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| 383 | soconnsleep (struct socket *so) |
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| 384 | { |
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| 385 | rtems_event_set events; |
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| 386 | rtems_id tid; |
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| 387 | |
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| 388 | /* |
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| 389 | * Soak up any pending events. |
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| 390 | * The sleep/wakeup synchronization in the FreeBSD |
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| 391 | * kernel has no memory. |
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| 392 | */ |
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| 393 | rtems_event_receive (SOSLEEP_EVENT, RTEMS_EVENT_ANY | RTEMS_NO_WAIT, RTEMS_NO_TIMEOUT, &events); |
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| 394 | |
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| 395 | /* |
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| 396 | * Set this task as the target of the wakeup operation. |
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| 397 | */ |
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| 398 | if (so->so_pgid) |
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| 399 | rtems_panic ("Another task is already sleeping on that socket"); |
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| 400 | rtems_task_ident (RTEMS_SELF, 0, &tid); |
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| 401 | so->so_pgid = tid; |
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| 402 | |
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| 403 | /* |
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| 404 | * Wait for the wakeup event. |
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| 405 | */ |
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| 406 | rtems_bsdnet_event_receive (SOSLEEP_EVENT, RTEMS_EVENT_ANY | RTEMS_WAIT, RTEMS_NO_TIMEOUT, &events); |
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| 407 | |
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| 408 | /* |
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| 409 | * Relinquish ownership of the socket. |
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| 410 | */ |
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| 411 | so->so_pgid = 0; |
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| 412 | } |
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| 413 | |
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| 414 | /* |
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| 415 | * Wake up a task waiting for a connection/disconnection to complete. |
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| 416 | */ |
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| 417 | void |
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| 418 | soconnwakeup (struct socket *so) |
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| 419 | { |
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| 420 | if (so->so_pgid) |
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| 421 | rtems_event_send (so->so_pgid, SOSLEEP_EVENT); |
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| 422 | } |
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| 423 | |
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| 424 | /* |
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| 425 | * Send an event to the network daemon. |
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| 426 | * This corresponds to sending a software interrupt in the BSD kernel. |
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| 427 | */ |
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| 428 | void |
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| 429 | rtems_bsdnet_schednetisr (int n) |
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| 430 | { |
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| 431 | rtems_event_send (networkDaemonTid, 1 << n); |
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| 432 | } |
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| 433 | |
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| 434 | /* |
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| 435 | * The network daemon |
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| 436 | * This provides a context to run BSD software interrupts |
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| 437 | */ |
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| 438 | static void |
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| 439 | networkDaemon (void *task_argument) |
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| 440 | { |
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| 441 | rtems_event_set events; |
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| 442 | rtems_interval now; |
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| 443 | int ticksPassed; |
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| 444 | unsigned32 timeout; |
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| 445 | struct callout *c; |
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| 446 | |
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| 447 | for (;;) { |
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| 448 | c = calltodo.c_next; |
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| 449 | if (c) |
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| 450 | timeout = c->c_time; |
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| 451 | else |
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| 452 | timeout = RTEMS_NO_TIMEOUT; |
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| 453 | rtems_bsdnet_event_receive (NETISR_EVENTS, |
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| 454 | RTEMS_EVENT_ANY | RTEMS_WAIT, |
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| 455 | timeout, |
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| 456 | &events); |
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| 457 | if (events & NETISR_IP_EVENT) |
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| 458 | ipintr (); |
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| 459 | if (events & NETISR_ARP_EVENT) |
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| 460 | arpintr (); |
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| 461 | rtems_clock_get (RTEMS_CLOCK_GET_TICKS_SINCE_BOOT, &now); |
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| 462 | ticksPassed = now - ticksWhenCalloutsLastChecked; |
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| 463 | if (ticksPassed != 0) { |
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| 464 | ticksWhenCalloutsLastChecked = now; |
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| 465 | |
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| 466 | c = calltodo.c_next; |
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| 467 | if (c) { |
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| 468 | c->c_time -= ticksPassed; |
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| 469 | while ((c = calltodo.c_next) != NULL && c->c_time <= 0) { |
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| 470 | void *arg; |
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| 471 | void (*func) (void *); |
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| 472 | |
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| 473 | func = c->c_func; |
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| 474 | arg = c->c_arg; |
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| 475 | calltodo.c_next = c->c_next; |
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| 476 | c->c_next = callfree; |
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| 477 | callfree = c; |
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| 478 | (*func)(arg); |
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| 479 | } |
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| 480 | } |
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| 481 | } |
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| 482 | } |
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| 483 | } |
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| 484 | |
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| 485 | /* |
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| 486 | * Structure passed to task-start stub |
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| 487 | */ |
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| 488 | struct newtask { |
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| 489 | void (*entry)(void *); |
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| 490 | void *arg; |
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| 491 | }; |
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| 492 | |
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| 493 | /* |
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| 494 | * Task-start stub |
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| 495 | */ |
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| 496 | static void |
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| 497 | taskEntry (rtems_task_argument arg) |
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| 498 | { |
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| 499 | struct newtask t; |
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| 500 | |
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| 501 | /* |
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| 502 | * Pick up task information and free |
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| 503 | * the memory allocated to pass the |
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| 504 | * information to this task. |
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| 505 | */ |
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| 506 | t = *(struct newtask *)arg; |
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| 507 | free ((struct newtask *)arg); |
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| 508 | |
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| 509 | /* |
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| 510 | * Enter the competition for the network semaphore |
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| 511 | */ |
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| 512 | rtems_bsdnet_semaphore_obtain (); |
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| 513 | |
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| 514 | /* |
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| 515 | * Enter the task |
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| 516 | */ |
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| 517 | (*t.entry)(t.arg); |
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| 518 | rtems_panic ("Network task returned!\n"); |
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| 519 | } |
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| 520 | |
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| 521 | /* |
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| 522 | * Start a network task |
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| 523 | */ |
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| 524 | rtems_id |
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| 525 | rtems_bsdnet_newproc (char *name, int stacksize, void(*entry)(void *), void *arg) |
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| 526 | { |
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| 527 | struct newtask *t; |
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| 528 | char nm[4]; |
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| 529 | rtems_id tid; |
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| 530 | rtems_status_code sc; |
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| 531 | |
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| 532 | strncpy (nm, name, 4); |
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| 533 | sc = rtems_task_create (rtems_build_name(nm[0], nm[1], nm[2], nm[3]), |
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| 534 | networkDaemonPriority, |
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| 535 | stacksize, |
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| 536 | RTEMS_PREEMPT|RTEMS_NO_TIMESLICE|RTEMS_NO_ASR|RTEMS_INTERRUPT_LEVEL(0), |
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| 537 | RTEMS_NO_FLOATING_POINT|RTEMS_LOCAL, |
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| 538 | &tid); |
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| 539 | if (sc != RTEMS_SUCCESSFUL) |
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| 540 | rtems_panic ("Can't create network daemon `%s': `%s'\n", name, rtems_status_text (sc)); |
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| 541 | |
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| 542 | /* |
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| 543 | * Set up task arguments |
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| 544 | */ |
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| 545 | t = malloc (sizeof *t); |
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| 546 | t->entry = entry; |
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| 547 | t->arg = arg; |
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| 548 | |
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| 549 | /* |
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| 550 | * Start the task |
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| 551 | */ |
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| 552 | sc = rtems_task_start (tid, taskEntry, (rtems_task_argument)t); |
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| 553 | if (sc != RTEMS_SUCCESSFUL) |
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| 554 | rtems_panic ("Can't start network daemon `%s': `%s'\n", name, rtems_status_text (sc)); |
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| 555 | |
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| 556 | /* |
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| 557 | * Let our caller know the i.d. of the new task |
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| 558 | */ |
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| 559 | return tid; |
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| 560 | } |
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| 561 | |
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| 562 | rtems_status_code rtems_bsdnet_event_receive ( |
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| 563 | rtems_event_set event_in, |
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| 564 | rtems_option option_set, |
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| 565 | rtems_interval ticks, |
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| 566 | rtems_event_set *event_out) |
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| 567 | { |
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| 568 | rtems_status_code sc; |
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| 569 | |
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| 570 | rtems_bsdnet_semaphore_release (); |
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| 571 | sc = rtems_event_receive (event_in, option_set, ticks, event_out); |
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| 572 | rtems_bsdnet_semaphore_obtain (); |
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| 573 | return sc; |
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| 574 | } |
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| 575 | |
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| 576 | /* |
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| 577 | * Return time since startup |
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| 578 | */ |
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| 579 | void |
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| 580 | microtime (struct timeval *t) |
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| 581 | { |
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| 582 | rtems_interval now; |
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| 583 | |
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| 584 | rtems_clock_get (RTEMS_CLOCK_GET_TICKS_SINCE_BOOT, &now); |
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| 585 | t->tv_sec = now / rtems_bsdnet_ticks_per_second; |
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| 586 | t->tv_usec = (now % rtems_bsdnet_ticks_per_second) * rtems_bsdnet_microseconds_per_tick; |
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| 587 | } |
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| 588 | |
---|
| 589 | unsigned long |
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| 590 | rtems_bsdnet_seconds_since_boot (void) |
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| 591 | { |
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| 592 | rtems_interval now; |
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| 593 | |
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| 594 | rtems_clock_get (RTEMS_CLOCK_GET_TICKS_SINCE_BOOT, &now); |
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| 595 | return now / rtems_bsdnet_ticks_per_second; |
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| 596 | } |
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| 597 | |
---|
| 598 | /* |
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| 599 | * Fake random number generator |
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| 600 | */ |
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| 601 | unsigned long |
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| 602 | rtems_bsdnet_random (void) |
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| 603 | { |
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| 604 | rtems_interval now; |
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| 605 | |
---|
| 606 | rtems_clock_get (RTEMS_CLOCK_GET_TICKS_SINCE_BOOT, &now); |
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| 607 | return (now * 99991); |
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| 608 | } |
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| 609 | |
---|
| 610 | /* |
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| 611 | * Callout list processing |
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| 612 | */ |
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| 613 | void |
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| 614 | timeout(void (*ftn)(void *), void *arg, int ticks) |
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| 615 | { |
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| 616 | register struct callout *new, *p, *t; |
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| 617 | |
---|
| 618 | if (ticks <= 0) |
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| 619 | ticks = 1; |
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| 620 | |
---|
| 621 | /* Fill in the next free callout structure. */ |
---|
| 622 | if (callfree == NULL) { |
---|
| 623 | callfree = malloc (sizeof *callfree); |
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| 624 | if (callfree == NULL) |
---|
| 625 | rtems_panic ("No memory for timeout table entry"); |
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| 626 | callfree->c_next = NULL; |
---|
| 627 | } |
---|
| 628 | |
---|
| 629 | new = callfree; |
---|
| 630 | callfree = new->c_next; |
---|
| 631 | new->c_arg = arg; |
---|
| 632 | new->c_func = ftn; |
---|
| 633 | |
---|
| 634 | /* |
---|
| 635 | * The time for each event is stored as a difference from the time |
---|
| 636 | * of the previous event on the queue. Walk the queue, correcting |
---|
| 637 | * the ticks argument for queue entries passed. Correct the ticks |
---|
| 638 | * value for the queue entry immediately after the insertion point |
---|
| 639 | * as well. Watch out for negative c_time values; these represent |
---|
| 640 | * overdue events. |
---|
| 641 | */ |
---|
| 642 | for (p = &calltodo; |
---|
| 643 | (t = p->c_next) != NULL && ticks > t->c_time; p = t) |
---|
| 644 | if (t->c_time > 0) |
---|
| 645 | ticks -= t->c_time; |
---|
| 646 | new->c_time = ticks; |
---|
| 647 | if (t != NULL) |
---|
| 648 | t->c_time -= ticks; |
---|
| 649 | |
---|
| 650 | /* Insert the new entry into the queue. */ |
---|
| 651 | p->c_next = new; |
---|
| 652 | new->c_next = t; |
---|
| 653 | } |
---|
| 654 | |
---|
| 655 | /* |
---|
| 656 | * Ticks till specified time |
---|
| 657 | * FIXME: This version worries only about seconds, but that's good |
---|
| 658 | * enough for the way the network code uses this routine. |
---|
| 659 | */ |
---|
| 660 | int |
---|
| 661 | hzto(struct timeval *tv) |
---|
| 662 | { |
---|
| 663 | long diff = tv->tv_sec - rtems_bsdnet_seconds_since_boot(); |
---|
| 664 | |
---|
| 665 | if (diff <= 0) |
---|
| 666 | return 1; |
---|
| 667 | return diff * rtems_bsdnet_ticks_per_second; |
---|
| 668 | } |
---|
| 669 | |
---|
| 670 | /* |
---|
| 671 | * Kernel debugging |
---|
| 672 | */ |
---|
| 673 | int rtems_bsdnet_log_priority; |
---|
| 674 | void |
---|
| 675 | rtems_bsdnet_log (int priority, const char *fmt, ...) |
---|
| 676 | { |
---|
| 677 | va_list args; |
---|
| 678 | |
---|
| 679 | if (priority & rtems_bsdnet_log_priority) { |
---|
| 680 | va_start (args, fmt); |
---|
| 681 | vprintf (fmt, args); |
---|
| 682 | va_end (args); |
---|
| 683 | } |
---|
| 684 | } |
---|
| 685 | |
---|
| 686 | /* |
---|
| 687 | * Hack alert: kmem_malloc `knows' that its |
---|
| 688 | * first invocation is to get mbuf clusters! |
---|
| 689 | */ |
---|
| 690 | int mb_map_full; |
---|
| 691 | vm_map_t mb_map; |
---|
| 692 | vm_offset_t |
---|
| 693 | kmem_malloc (vm_map_t *map, vm_size_t size, boolean_t waitflag) |
---|
| 694 | { |
---|
| 695 | void *p; |
---|
| 696 | |
---|
| 697 | /* |
---|
| 698 | * Can't get memory if we're already running. |
---|
| 699 | */ |
---|
| 700 | if (networkDaemonTid) { |
---|
| 701 | if (waitflag == M_WAITOK) |
---|
[109b17f4] | 702 | rtems_panic ( |
---|
| 703 | "Network mbuf space can not be enlarged after rtems_bsdnet_initialize() has\n" |
---|
| 704 | "returned. Enlarge the initial mbuf/cluster size in rtems_bsdnet_config."); |
---|
[39e6e65a] | 705 | return 0; |
---|
| 706 | } |
---|
| 707 | |
---|
| 708 | #define ROUNDSIZE 2048 |
---|
| 709 | p = malloc (size+ROUNDSIZE); |
---|
| 710 | p = (void *)((unsigned long)p & ~(ROUNDSIZE-1)); |
---|
| 711 | if ((p == NULL) && (waitflag == M_WAITOK)) |
---|
| 712 | rtems_panic ("Can't get initial network memory!"); |
---|
| 713 | if (mbutl == NULL) |
---|
| 714 | mbutl = p; |
---|
| 715 | return (vm_offset_t)p; |
---|
| 716 | } |
---|
| 717 | |
---|
| 718 | /* |
---|
| 719 | * IP header checksum routine for processors which don't have an inline version |
---|
| 720 | */ |
---|
| 721 | u_int |
---|
| 722 | in_cksum_hdr (const void *ip) |
---|
| 723 | { |
---|
| 724 | rtems_unsigned32 sum; |
---|
| 725 | const rtems_unsigned16 *sp; |
---|
| 726 | int i; |
---|
| 727 | |
---|
| 728 | sum = 0; |
---|
| 729 | sp = (rtems_unsigned16 *)ip; |
---|
| 730 | for (i = 0 ; i < 10 ; i++) |
---|
| 731 | sum += *sp++; |
---|
| 732 | while (sum > 0xFFFF) |
---|
| 733 | sum = (sum & 0xffff) + (sum >> 16); |
---|
| 734 | return ~sum & 0xFFFF; |
---|
| 735 | } |
---|
| 736 | |
---|
| 737 | /* |
---|
| 738 | * Manipulate routing tables |
---|
| 739 | */ |
---|
| 740 | int rtems_bsdnet_rtrequest ( |
---|
| 741 | int req, |
---|
| 742 | struct sockaddr *dst, |
---|
| 743 | struct sockaddr *gateway, |
---|
| 744 | struct sockaddr *netmask, |
---|
| 745 | int flags, |
---|
| 746 | struct rtentry **net_nrt) |
---|
| 747 | { |
---|
| 748 | int error; |
---|
| 749 | |
---|
| 750 | rtems_bsdnet_semaphore_obtain (); |
---|
| 751 | error = rtrequest (req, dst, gateway, netmask, flags, net_nrt); |
---|
| 752 | rtems_bsdnet_semaphore_release (); |
---|
| 753 | if (error) { |
---|
| 754 | errno = error; |
---|
| 755 | return -1; |
---|
| 756 | } |
---|
| 757 | return 0; |
---|
| 758 | } |
---|
| 759 | |
---|
| 760 | static void |
---|
| 761 | rtems_bsdnet_setup (void) |
---|
| 762 | { |
---|
| 763 | struct rtems_bsdnet_ifconfig *ifp; |
---|
| 764 | int s; |
---|
| 765 | struct ifreq ifreq; |
---|
| 766 | struct sockaddr_in address; |
---|
| 767 | struct sockaddr_in netmask; |
---|
| 768 | struct sockaddr_in broadcast; |
---|
| 769 | struct sockaddr_in gateway; |
---|
| 770 | int i; |
---|
| 771 | |
---|
| 772 | /* |
---|
| 773 | * Set local parameters |
---|
| 774 | */ |
---|
| 775 | if (rtems_bsdnet_config.hostname) |
---|
| 776 | sethostname (rtems_bsdnet_config.hostname, |
---|
| 777 | strlen (rtems_bsdnet_config.hostname)); |
---|
| 778 | if (rtems_bsdnet_config.domainname) |
---|
| 779 | rtems_bsdnet_domain_name = |
---|
| 780 | strdup (rtems_bsdnet_config.domainname); |
---|
| 781 | if (rtems_bsdnet_config.log_host) |
---|
| 782 | rtems_bsdnet_log_host_address.s_addr = |
---|
| 783 | inet_addr (rtems_bsdnet_config.log_host); |
---|
| 784 | for (i = 0 ; i < sizeof rtems_bsdnet_config.name_server / |
---|
| 785 | sizeof rtems_bsdnet_config.name_server[0] ; i++) { |
---|
| 786 | if (!rtems_bsdnet_config.name_server[i]) |
---|
| 787 | break; |
---|
| 788 | rtems_bsdnet_nameserver[rtems_bsdnet_nameserver_count++].s_addr |
---|
| 789 | = inet_addr (rtems_bsdnet_config.name_server[i]); |
---|
| 790 | } |
---|
| 791 | |
---|
| 792 | /* |
---|
| 793 | * Configure interfaces |
---|
| 794 | */ |
---|
| 795 | s = socket (AF_INET, SOCK_DGRAM, 0); |
---|
| 796 | if (s < 0) |
---|
| 797 | rtems_panic ("Can't create initial socket: %s", strerror (errno)); |
---|
| 798 | for (ifp = rtems_bsdnet_config.ifconfig ; ifp ; ifp = ifp->next) { |
---|
| 799 | if (ifp->ip_address == NULL) |
---|
| 800 | continue; |
---|
| 801 | |
---|
| 802 | /* |
---|
| 803 | * Get the interface flags |
---|
| 804 | */ |
---|
| 805 | strcpy (ifreq.ifr_name, ifp->name); |
---|
| 806 | if (ioctl (s, SIOCGIFFLAGS, &ifreq) < 0) |
---|
| 807 | rtems_panic ("Can't get %s flags: %s", ifp->name, strerror (errno)); |
---|
| 808 | |
---|
| 809 | /* |
---|
| 810 | * Bring interface up |
---|
| 811 | */ |
---|
| 812 | ifreq.ifr_flags |= IFF_UP; |
---|
| 813 | if (ioctl (s, SIOCSIFFLAGS, &ifreq) < 0) |
---|
| 814 | rtems_panic ("Can't bring %s up: %s", ifp->name, strerror (errno)); |
---|
| 815 | |
---|
| 816 | /* |
---|
| 817 | * Set interface netmask |
---|
| 818 | */ |
---|
| 819 | memset (&netmask, '\0', sizeof netmask); |
---|
| 820 | netmask.sin_len = sizeof netmask; |
---|
| 821 | netmask.sin_family = AF_INET; |
---|
| 822 | netmask.sin_addr.s_addr = inet_addr (ifp->ip_netmask); |
---|
| 823 | memcpy (&ifreq.ifr_addr, &netmask, sizeof netmask); |
---|
| 824 | if (ioctl (s, SIOCSIFNETMASK, &ifreq) < 0) |
---|
| 825 | rtems_panic ("Can't set %s netmask: %s", ifp->name, strerror (errno)); |
---|
| 826 | |
---|
| 827 | /* |
---|
| 828 | * Set interface address |
---|
| 829 | */ |
---|
| 830 | memset (&address, '\0', sizeof address); |
---|
| 831 | address.sin_len = sizeof address; |
---|
| 832 | address.sin_family = AF_INET; |
---|
| 833 | address.sin_addr.s_addr = inet_addr (ifp->ip_address); |
---|
| 834 | memcpy (&ifreq.ifr_addr, &address, sizeof address); |
---|
| 835 | if (ioctl (s, SIOCSIFADDR, &ifreq) < 0) |
---|
| 836 | rtems_panic ("Can't set %s address: %s", ifp->name, strerror (errno)); |
---|
| 837 | |
---|
| 838 | /* |
---|
| 839 | * Set interface broadcast address |
---|
| 840 | */ |
---|
| 841 | memset (&broadcast, '\0', sizeof broadcast); |
---|
| 842 | broadcast.sin_len = sizeof broadcast; |
---|
| 843 | broadcast.sin_family = AF_INET; |
---|
| 844 | broadcast.sin_addr.s_addr = address.sin_addr.s_addr | ~netmask.sin_addr.s_addr; |
---|
| 845 | memcpy (&ifreq.ifr_broadaddr, &broadcast, sizeof broadcast); |
---|
| 846 | if (ioctl (s, SIOCSIFBRDADDR, &ifreq) < 0) |
---|
| 847 | rtems_panic ("Can't set %s broadcast address: %s", ifp->name, strerror (errno)); |
---|
| 848 | } |
---|
| 849 | |
---|
| 850 | /* |
---|
| 851 | * We're done with the dummy socket |
---|
| 852 | */ |
---|
| 853 | close (s); |
---|
| 854 | |
---|
| 855 | /* |
---|
| 856 | * Set default route |
---|
| 857 | */ |
---|
| 858 | if (rtems_bsdnet_config.gateway) { |
---|
| 859 | address.sin_addr.s_addr = INADDR_ANY; |
---|
| 860 | netmask.sin_addr.s_addr = INADDR_ANY; |
---|
| 861 | memset (&gateway, '\0', sizeof gateway); |
---|
| 862 | gateway.sin_len = sizeof gateway; |
---|
| 863 | gateway.sin_family = AF_INET; |
---|
| 864 | gateway.sin_addr.s_addr = inet_addr (rtems_bsdnet_config.gateway); |
---|
| 865 | if (rtems_bsdnet_rtrequest ( |
---|
| 866 | RTM_ADD, |
---|
| 867 | (struct sockaddr *)&address, |
---|
| 868 | (struct sockaddr *)&gateway, |
---|
| 869 | (struct sockaddr *)&netmask, |
---|
| 870 | (RTF_UP | RTF_GATEWAY | RTF_STATIC), NULL) < 0) |
---|
| 871 | rtems_panic ("Can't set default route: %s", strerror (errno)); |
---|
| 872 | } |
---|
| 873 | } |
---|
| 874 | |
---|
| 875 | /* |
---|
| 876 | * Initialize the network |
---|
| 877 | */ |
---|
| 878 | int |
---|
| 879 | rtems_bsdnet_initialize_network (void) |
---|
| 880 | { |
---|
| 881 | struct rtems_bsdnet_ifconfig *ifp; |
---|
| 882 | |
---|
| 883 | /* |
---|
| 884 | * Start network tasks. |
---|
| 885 | * Initialize BSD network data structures. |
---|
| 886 | */ |
---|
| 887 | rtems_bsdnet_initialize (); |
---|
| 888 | |
---|
| 889 | /* |
---|
| 890 | * Attach interfaces |
---|
| 891 | */ |
---|
| 892 | for (ifp = rtems_bsdnet_config.ifconfig ; ifp ; ifp = ifp->next) { |
---|
| 893 | rtems_bsdnet_semaphore_obtain (); |
---|
| 894 | (ifp->attach)(ifp); |
---|
| 895 | rtems_bsdnet_semaphore_release (); |
---|
| 896 | } |
---|
| 897 | |
---|
| 898 | /* |
---|
| 899 | * Bring up the network |
---|
| 900 | */ |
---|
| 901 | rtems_bsdnet_setup (); |
---|
| 902 | if (rtems_bsdnet_config.bootp) |
---|
| 903 | (*rtems_bsdnet_config.bootp)(); |
---|
| 904 | return 0; |
---|
| 905 | } |
---|