lwip: Use hardware RNG for LWIP_RAND(), use LWIP_RAND() for random port assignment
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72995bfcec
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73b3ae8a2d
3 changed files with 7 additions and 9 deletions
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@ -696,14 +696,12 @@ tcp_new_port(void)
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again:
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#if ESP_RANDOM_TCP_PORT
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tcp_port = system_get_time();
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if (tcp_port < 0)
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tcp_port = LWIP_RAND() - tcp_port;
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tcp_port %= TCP_LOCAL_PORT_RANGE_START;
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tcp_port = abs(LWIP_RAND()) % (TCP_LOCAL_PORT_RANGE_END - TCP_LOCAL_PORT_RANGE_START);
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tcp_port += TCP_LOCAL_PORT_RANGE_START;
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#else
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if (tcp_port++ == TCP_LOCAL_PORT_RANGE_END) {
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tcp_port = TCP_LOCAL_PORT_RANGE_START;
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}
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if (tcp_port++ == TCP_LOCAL_PORT_RANGE_END) {
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tcp_port = TCP_LOCAL_PORT_RANGE_START;
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}
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#endif
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/* Check all PCB lists. */
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@ -67,7 +67,6 @@ typedef struct sys_mbox_s {
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#define sys_sem_valid( x ) ( ( ( *x ) == NULL) ? pdFALSE : pdTRUE )
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#define sys_sem_set_invalid( x ) ( ( *x ) = NULL )
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uint32_t system_get_time(void);
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void sys_delay_ms(uint32_t ms);
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sys_sem_t* sys_thread_sem_init(void);
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void sys_thread_sem_deinit(void);
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@ -37,6 +37,7 @@
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#include <sys/time.h>
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#include <sys/fcntl.h>
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#include "esp_task.h"
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#include "esp_system.h"
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#include "sdkconfig.h"
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/* Enable all Espressif-only options */
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@ -65,7 +66,7 @@
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*/
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#define SMEMCPY(dst,src,len) memcpy(dst,src,len)
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#define LWIP_RAND rand
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#define LWIP_RAND esp_random
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/*
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------------------------------------
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