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patch #6463 (IGMP - Adding Random Delay): added define LWIP_RAND() for lwip-wide randomization (to be defined in cc.h)

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goldsimon 2010-01-10 10:47:27 +00:00
parent aa7dd9a8ad
commit d85a18752f
3 changed files with 9 additions and 5 deletions
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4
CHANGELOG
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@ -19,6 +19,10 @@ HISTORY
++ New features: ++ New features:
2010-01-10: Simon Goldschmidt
* init.c, igmp.c: patch #6463 (IGMP - Adding Random Delay): added define
LWIP_RAND() for lwip-wide randomization (to be defined in cc.h)
2009-12-31: Simon Goldschmidt 2009-12-31: Simon Goldschmidt
* tcpip.c, init.c, memp.c, sys.c, memp_std.h, sys.h, tcpip.h * tcpip.c, init.c, memp.c, sys.c, memp_std.h, sys.h, tcpip.h
added timers.c/.h: Separated timer implementation from semaphore/mbox added timers.c/.h: Separated timer implementation from semaphore/mbox

5
src/core/init.c
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@ -145,7 +145,7 @@
#error "One and exactly one of LWIP_EVENT_API and LWIP_CALLBACK_API has to be enabled in your lwipopts.h" #error "One and exactly one of LWIP_EVENT_API and LWIP_CALLBACK_API has to be enabled in your lwipopts.h"
#endif #endif
/* There must be sufficient timeouts, taking into account requirements of the subsystems. */ /* There must be sufficient timeouts, taking into account requirements of the subsystems. */
#if ((NO_SYS==0) && (MEMP_NUM_SYS_TIMEOUT < (LWIP_TCP + IP_REASSEMBLY + LWIP_ARP + (2*LWIP_DHCP) + LWIP_AUTOIP + LWIP_IGMP + LWIP_DNS + PPP_SUPPORT))) #if (MEMP_NUM_SYS_TIMEOUT < (LWIP_TCP + IP_REASSEMBLY + LWIP_ARP + (2*LWIP_DHCP) + LWIP_AUTOIP + LWIP_IGMP + LWIP_DNS + PPP_SUPPORT))
#error "MEMP_NUM_SYS_TIMEOUT is too low to accomodate all required timeouts" #error "MEMP_NUM_SYS_TIMEOUT is too low to accomodate all required timeouts"
#endif #endif
#if (IP_REASSEMBLY && (MEMP_NUM_REASSDATA > IP_REASS_MAX_PBUFS)) #if (IP_REASSEMBLY && (MEMP_NUM_REASSDATA > IP_REASS_MAX_PBUFS))
@ -172,6 +172,9 @@
#if !LWIP_ETHERNET && (LWIP_ARP || PPPOE_SUPPORT) #if !LWIP_ETHERNET && (LWIP_ARP || PPPOE_SUPPORT)
#error "LWIP_ETHERNET needs to be turned on for LWIP_ARP or PPPOE_SUPPORT" #error "LWIP_ETHERNET needs to be turned on for LWIP_ARP or PPPOE_SUPPORT"
#endif #endif
#ifndef LWIP_RAND
#error "LWIP_RAND() needs to be defined to a random-function returning an u32_t random value"
#endif
/* Compile-time checks for deprecated options. /* Compile-time checks for deprecated options.

5
src/core/ipv4/igmp.c
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@ -641,10 +641,7 @@ igmp_timeout(struct igmp_group *group)
void void
igmp_start_timer(struct igmp_group *group, u8_t max_time) igmp_start_timer(struct igmp_group *group, u8_t max_time)
{ {
/** group->timer = LWIP_RAND() % max_time;
* @todo Important !! this should be random 0 -> max_time. Find out how to do this
*/
group->timer = max_time;
} }
/** /**