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| author |   Jon Maloy <jon.maloy@ericsson.com> | 2018-09-28 20:23:21 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-09-29 11:24:22 -0700 |
| commit | 25b9221b959483f17c2964d0922869e16caa86b5 (patch) | |
| tree | efe153ded226c9b0046ff7612fa90fb0883e93b2 /net/tipc/msg.h | |
| parent | tipc: refactor function tipc_sk_filter_connect() (diff) | |
| download | linux-dev-25b9221b959483f17c2964d0922869e16caa86b5.tar.xz linux-dev-25b9221b959483f17c2964d0922869e16caa86b5.zip | |
tipc: add SYN bit to connection setup messages
Messages intended for intitating a connection are currently
indistinguishable from regular datagram messages. The TIPC
protocol specification defines bit 17 in word 0 as a SYN bit
to allow sanity check of such messages in the listening socket,
but this has so far never been implemented.
We do that in this commit.
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/msg.h')
| -rw-r--r-- | net/tipc/msg.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/net/tipc/msg.h b/net/tipc/msg.h index a4e944d59394..cd64d7b2a0fe 100644 --- a/net/tipc/msg.h +++ b/net/tipc/msg.h @@ -216,6 +216,16 @@ static inline void msg_set_non_seq(struct tipc_msg *m, u32 n) msg_set_bits(m, 0, 20, 1, n); } +static inline int msg_is_syn(struct tipc_msg *m) +{ + return msg_bits(m, 0, 17, 1); +} + +static inline void msg_set_syn(struct tipc_msg *m, u32 d) +{ + msg_set_bits(m, 0, 17, 1, d); +} + static inline int msg_dest_droppable(struct tipc_msg *m) { return msg_bits(m, 0, 19, 1); |