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mac80211: ensure no limits on station rhashtable 

By default, the rhashtable logic will fail to insert
objects if the key-chains are too long and un-balanced.

In the degenerate case where mac80211 is creating many
virtual interfaces connected to the same peer(s), this
case can happen.

St insecure_elasticity to true to allow chains to grow
as long as needed.

Signed-off-by: Ben Greear <greearb@candelatech.com>
[remove message, change commit message slightly]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
steinar/wifi_calib_4_9_kernel
Ben Greear 2016-04-01 14:13:31 -07:00 committed by Johannes Berg
parent 62b14b241c
commit b6bf8c688e
1 changed files with 1 additions and 0 deletions
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net/mac80211/sta_info.c
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@ -67,6 +67,7 @@
static const struct rhashtable_params sta_rht_params = {
.nelem_hint = 3, /* start small */
.insecure_elasticity = true, /* Disable chain-length checks. */
.automatic_shrinking = true,
.head_offset = offsetof(struct sta_info, hash_node),
.key_offset = offsetof(struct sta_info, addr),