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| author | Martin Schiller <ms@dev.tdt.de> | 2018-11-27 09:50:29 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-11-29 14:25:36 -0800 |
| commit | b020fcf6bb4b2d980298c416b3f407075aa2b3b6 (patch) | |
| tree | 0416911e00e9f98aafd8ca8df328c2cacdaa35b8 /net/x25 | |
| parent | 06137619f061f498c2924f6543fa45b7d39f0501 (diff) | |
| download | linux-b020fcf6bb4b2d980298c416b3f407075aa2b3b6.tar.gz linux-b020fcf6bb4b2d980298c416b3f407075aa2b3b6.tar.bz2 linux-b020fcf6bb4b2d980298c416b3f407075aa2b3b6.zip | |
net/x25: handle call collisions
If a session in X25_STATE_1 (Awaiting Call Accept) receives a call
request, the session will be closed (x25_disconnect), cause=0x01
(Number Busy) and diag=0x48 (Call Collision) will be set and a clear
request will be send.
Signed-off-by: Martin Schiller <ms@dev.tdt.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/x25')
| -rw-r--r-- | net/x25/x25_in.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/net/x25/x25_in.c b/net/x25/x25_in.c index 3c12cae32001..afb26221d8a8 100644 --- a/net/x25/x25_in.c +++ b/net/x25/x25_in.c @@ -142,6 +142,15 @@ static int x25_state1_machine(struct sock *sk, struct sk_buff *skb, int frametyp sk->sk_state_change(sk); break; } + case X25_CALL_REQUEST: + /* call collision */ + x25->causediag.cause = 0x01; + x25->causediag.diagnostic = 0x48; + + x25_write_internal(sk, X25_CLEAR_REQUEST); + x25_disconnect(sk, EISCONN, 0x01, 0x48); + break; + case X25_CLEAR_REQUEST: if (!pskb_may_pull(skb, X25_STD_MIN_LEN + 2)) goto out_clear; |