Hi, I am a newbie to kernel hacking and I have a question. Am trying to patch the Network Subsystem and changing the net_random() to direct calls of prandom_u32. Why ? Because it is harder to audit / grep and new commits actually use prandom_u32 only am told. u32 prandom_u32(void); /* defined in include/linux/random.h: */ #define net_random() prandom_u32() /* defined in include/linux/net.h */ Everything works as expected until I get to net/core/neighbour.c and then patch fails to apply. The diff is here: ------------------------------------------------------------------------------------------------------------------------------- diff --git a/net/core/neighbour.c b/net/core/neighbour.c index 47d834e..ea97361 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -117,7 +117,7 @@ static void neigh_cleanup_and_release(struct neighbour *neig unsigned long neigh_rand_reach_time(unsigned long base) { - return base ? (prandom_u32() % base) + (base >> 1) : 0; + return base ? (net_random() % base) + (base >> 1) : 0; } EXPORT_SYMBOL(neigh_rand_reach_time); @@ -1415,7 +1415,7 @@ void pneigh_enqueue(struct neigh_table *tbl, struct neigh_ struct sk_buff *skb) { unsigned long now = jiffies; - unsigned long sched_next = now + (prandom_u32() % + unsigned long sched_next = now + (net_random() % NEIGH_VAR(p, PROXY_DELAY)); if (tbl->proxy_queue.qlen > NEIGH_VAR(p, PROXY_QLEN)) { ------------------------------------------------------------------------------------------------------------------------------- I can use some help and guidance please, what am I doing wrong ? Or not seeing ? It's just this neighbor.c file that is doing this and I am stumped. Thank you. Aruna Hewapathirane <https://sites.google.com/site/arunahewapathirane/home/business-card/buisness...>