batman-adv: Ignore invalid batadv_v_gw during netlink send
[ Upstream commitpull/10/head011c935fce
] The function batadv_v_gw_dump stops the processing loop when batadv_v_gw_dump_entry returns a non-0 return code. This should only happen when the buffer is full. Otherwise, an empty message may be returned by batadv_gw_dump. This empty message will then stop the netlink dumping of gateway entries. At worst, not a single entry is returned to userspace even when plenty of possible gateways exist. Fixes:b71bb6f924
("batman-adv: add B.A.T.M.A.N. V bat_gw_dump implementations") Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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8b7e379faf
commit
f08cabec06
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@ -930,7 +930,7 @@ static int batadv_v_gw_dump_entry(struct sk_buff *msg, u32 portid, u32 seq,
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struct batadv_neigh_ifinfo *router_ifinfo = NULL;
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struct batadv_neigh_node *router;
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struct batadv_gw_node *curr_gw;
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int ret = -EINVAL;
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int ret = 0;
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void *hdr;
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router = batadv_orig_router_get(gw_node->orig_node, BATADV_IF_DEFAULT);
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