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SubjectRe: [PATCH v2] sctp: check assoc before SCTP_ADDR_{MADE_PRIM,ADDED} event
On Wed, May 27, 2020 at 5:57 PM Jonas Falkevik <jonas.falkevik@gmail.com> wrote:
>
> Make sure SCTP_ADDR_{MADE_PRIM,ADDED} are sent only for associations
> that have been established.
>
> These events are described in rfc6458#section-6.1
> SCTP_PEER_ADDR_CHANGE:
> This tag indicates that an address that is
> part of an existing association has experienced a change of
> state (e.g., a failure or return to service of the reachability
> of an endpoint via a specific transport address).
>
> Signed-off-by: Jonas Falkevik <jonas.falkevik@gmail.com>
Reviewed-by: Xin Long <lucien.xin@gmail.com>

> ---
> Changes in v2:
> - Check asoc state to be at least established.
> Instead of associd being SCTP_FUTURE_ASSOC.
> - Common check for all peer addr change event
>
> net/sctp/ulpevent.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/net/sctp/ulpevent.c b/net/sctp/ulpevent.c
> index c82dbdcf13f2..77d5c36a8991 100644
> --- a/net/sctp/ulpevent.c
> +++ b/net/sctp/ulpevent.c
> @@ -343,6 +343,9 @@ void sctp_ulpevent_nofity_peer_addr_change(struct sctp_transport *transport,
> struct sockaddr_storage addr;
> struct sctp_ulpevent *event;
>
> + if (asoc->state < SCTP_STATE_ESTABLISHED)
> + return;
> +
> memset(&addr, 0, sizeof(struct sockaddr_storage));
> memcpy(&addr, &transport->ipaddr, transport->af_specific->sockaddr_len);
>
> --
> 2.25.4
>

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