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author | Xin Long <lucien.xin@gmail.com> | 2016-12-20 13:49:50 +0800 |
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committer | David S. Miller <davem@davemloft.net> | 2016-12-20 14:15:45 -0500 |
commit | b8607805dd157d5f93372f338b3f3b9018c507d7 (patch) | |
tree | e1d963678b88a3236dfee33246557a0b0841aaaa /sound | |
parent | 165f2cf6405a9e2153b69302845c7d5c9f3cb23b (diff) |
sctp: not copying duplicate addrs to the assoc's bind address list
sctp.local_addr_list is a global address list that is supposed to include
all the local addresses. sctp updates this list according to NETDEV_UP/
NETDEV_DOWN notifications.
However, if multiple NICs have the same address, the global list would
have duplicate addresses. Even if for one NIC, promote secondaries in
__inet_del_ifa can also lead to accumulating duplicate addresses.
When sctp binds address 'ANY' and creates a connection, it copies all
the addresses from global list into asoc's bind addr list, which makes
sctp pack the duplicate addresses into INIT/INIT_ACK packets.
This patch is to filter the duplicate addresses when copying the addrs
from global list in sctp_copy_local_addr_list and unpacking addr_param
from cookie in sctp_raw_to_bind_addrs to asoc's bind addr list.
Note that we can't filter the duplicate addrs when global address list
gets updated, As NETDEV_DOWN event may remove an addr that still exists
in another NIC.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'sound')
0 files changed, 0 insertions, 0 deletions