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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

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This commit is contained in:
David S. Miller
2016-09-23 06:46:57 -04:00
parent 0364a8824c b1f2beb87b
commit d6989d4bbe
289 changed files with 2982 additions and 1761 deletions
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10
net/ipv4/route.c
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@@ -476,12 +476,18 @@ u32 ip_idents_reserve(u32 hash, int segs)
atomic_t *p_id = ip_idents + hash % IP_IDENTS_SZ;
u32 old = ACCESS_ONCE(*p_tstamp);
u32 now = (u32)jiffies;
u32 delta = 0;
u32 new, delta = 0;
if (old != now && cmpxchg(p_tstamp, old, now) == old)
delta = prandom_u32_max(now - old);
return atomic_add_return(segs + delta, p_id) - segs;
/* Do not use atomic_add_return() as it makes UBSAN unhappy */
do {
old = (u32)atomic_read(p_id);
new = old + delta + segs;
} while (atomic_cmpxchg(p_id, old, new) != old);
return new - segs;
}
EXPORT_SYMBOL(ip_idents_reserve);