diff options
| author | Vlad Yasevich <vladislav.yasevich@hp.com> | 2007-05-04 22:55:27 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2007-05-04 22:55:27 +0200 |
| commit | 07d939677166cc4f000c767196872a9becc2697b (patch) | |
| tree | bef3d3c75ac3dd56813adbc63281feb4195a5b47 /include | |
| parent | [SCTP]: Re-order SCTP initializations to avoid race with sctp_rcv() (diff) | |
| download | linux-07d939677166cc4f000c767196872a9becc2697b.tar.xz linux-07d939677166cc4f000c767196872a9becc2697b.zip | |
[SCTP]: Set assoc_id correctly during INIT collision.
During the INIT/COOKIE-ACK collision cases, it's possible to get
into a situation where the association id is not yet set at the time
of the user event generation. As a result, user events have an
association id set to 0 which will confuse applications.
This happens if we hit case B of duplicate cookie processing.
In the particular example found and provided by Oscar Isaula
<Oscar.Isaula@motorola.com>, flow looks like this:
A B
---- INIT-------> (lost)
<---------INIT------
---- INIT-ACK--->
<------ Cookie ECHO
When the Cookie Echo is received, we end up trying to update the
association that was created on A as a result of the (lost) INIT,
but that association doesn't have the ID set yet.
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/sctp/command.h | 2 | ||||
| -rw-r--r-- | include/net/sctp/structs.h | 1 |
2 files changed, 3 insertions, 0 deletions
diff --git a/include/net/sctp/command.h b/include/net/sctp/command.h index 6114c4f54b0a..f56c8d695a82 100644 --- a/include/net/sctp/command.h +++ b/include/net/sctp/command.h @@ -100,6 +100,8 @@ typedef enum { SCTP_CMD_T3_RTX_TIMERS_STOP, /* Stops T3-rtx pending timers */ SCTP_CMD_FORCE_PRIM_RETRAN, /* Forces retrans. over primary path. */ SCTP_CMD_SET_SK_ERR, /* Set sk_err */ + SCTP_CMD_ASSOC_CHANGE, /* generate and send assoc_change event */ + SCTP_CMD_ADAPTATION_IND, /* generate and send adaptation event */ SCTP_CMD_LAST } sctp_verb_t; diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h index 7b4fff93ba7f..5e81984b8478 100644 --- a/include/net/sctp/structs.h +++ b/include/net/sctp/structs.h @@ -1857,6 +1857,7 @@ int sctp_assoc_set_bind_addr_from_ep(struct sctp_association *, int sctp_assoc_set_bind_addr_from_cookie(struct sctp_association *, struct sctp_cookie*, gfp_t gfp); +int sctp_assoc_set_id(struct sctp_association *, gfp_t); int sctp_cmp_addr_exact(const union sctp_addr *ss1, const union sctp_addr *ss2); |