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| author | Sven Eckelmann <sven.eckelmann@openmesh.com> | 2017-10-16 09:31:47 +0200 |
|---|---|---|
| committer | Simon Wunderlich <sw@simonwunderlich.de> | 2017-10-17 08:09:47 +0200 |
| commit | 6a4bc44b012cbc29c9d824be2c7ab9eac8ee6b6f (patch) | |
| tree | 8789ad6764356774116bfa5c4e593a57f6198305 /net/batman-adv/bat_v.c | |
| parent | bad5680b5052f9d3008a8cfcc0b34ba0da08401d (diff) | |
| download | lwn-6a4bc44b012cbc29c9d824be2c7ab9eac8ee6b6f.tar.gz lwn-6a4bc44b012cbc29c9d824be2c7ab9eac8ee6b6f.zip | |
batman-adv: Avoid spurious warnings from bat_v neigh_cmp implementation
The neighbor compare API implementation for B.A.T.M.A.N. V checks whether
the neigh_ifinfo for this neighbor on a specific interface exists. A
warning is printed when it isn't found.
But it is not called inside a lock which would prevent that this
information is lost right before batadv_neigh_ifinfo_get. It must therefore
be expected that batadv_v_neigh_(cmp|is_sob) might not be able to get the
requested neigh_ifinfo.
A WARN_ON for such a situation seems not to be appropriate because this
will only flood the kernel logs. The warnings must therefore be removed.
Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Diffstat (limited to 'net/batman-adv/bat_v.c')
| -rw-r--r-- | net/batman-adv/bat_v.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/net/batman-adv/bat_v.c b/net/batman-adv/bat_v.c index 93ef1c06227e..341ceab8338d 100644 --- a/net/batman-adv/bat_v.c +++ b/net/batman-adv/bat_v.c @@ -19,7 +19,6 @@ #include "main.h" #include <linux/atomic.h> -#include <linux/bug.h> #include <linux/cache.h> #include <linux/errno.h> #include <linux/if_ether.h> @@ -623,11 +622,11 @@ static int batadv_v_neigh_cmp(struct batadv_neigh_node *neigh1, int ret = 0; ifinfo1 = batadv_neigh_ifinfo_get(neigh1, if_outgoing1); - if (WARN_ON(!ifinfo1)) + if (!ifinfo1) goto err_ifinfo1; ifinfo2 = batadv_neigh_ifinfo_get(neigh2, if_outgoing2); - if (WARN_ON(!ifinfo2)) + if (!ifinfo2) goto err_ifinfo2; ret = ifinfo1->bat_v.throughput - ifinfo2->bat_v.throughput; @@ -649,11 +648,11 @@ static bool batadv_v_neigh_is_sob(struct batadv_neigh_node *neigh1, bool ret = false; ifinfo1 = batadv_neigh_ifinfo_get(neigh1, if_outgoing1); - if (WARN_ON(!ifinfo1)) + if (!ifinfo1) goto err_ifinfo1; ifinfo2 = batadv_neigh_ifinfo_get(neigh2, if_outgoing2); - if (WARN_ON(!ifinfo2)) + if (!ifinfo2) goto err_ifinfo2; threshold = ifinfo1->bat_v.throughput / 4; |