net: ndo_fdb_dump should report -EMSGSIZE to rtnl_fdb_dump.

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When the send skbuff reaches the end, nlmsg_put and friends returns
-EMSGSIZE but it is silently thrown away in ndo_fdb_dump. It is called
within a for_each_netdev loop and the first fdb entry of a following
netdev could fit in the remaining skbuff.  This breaks the mechanism
of cb->args[0] and idx to keep track of the entries that are already
dumped, which results missing entries in bridge fdb show command.

Signed-off-by: Minoura Makoto <minoura@valinux.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>

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MINOURA Makoto / 箕浦 真 2016-02-25 14:20:48 +09:00 • committed by David S. Miller

parent 4c0b6eaf37

commit 472681d57a

4 changed files with 23 additions and 7 deletions

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4

drivers/net/vxlan.c

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15

net/bridge/br_fdb.c

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6

net/core/rtnetlink.c

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5

net/switchdev/switchdev.c

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