* [PATCH net-next 1/1] net/smc: send response to test link signal
@ 2018-08-10 15:45 Ursula Braun
2018-08-10 21:39 ` David Miller
0 siblings, 1 reply; 2+ messages in thread
From: Ursula Braun @ 2018-08-10 15:45 UTC (permalink / raw)
To: davem
Cc: netdev, linux-s390, schwidefsky, heiko.carstens, raspl, linux-kernel
With SMC-D z/OS sends a test link signal every 10 seconds. Linux is
supposed to answer, otherwise the SMC-D connection breaks.
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
---
net/smc/smc_ism.c | 34 ++++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/net/smc/smc_ism.c b/net/smc/smc_ism.c
index cfade7fdcc6d..e36f21ce7252 100644
--- a/net/smc/smc_ism.c
+++ b/net/smc/smc_ism.c
@@ -184,6 +184,37 @@ struct smc_ism_event_work {
struct smcd_event event;
};
+#define ISM_EVENT_REQUEST 0x0001
+#define ISM_EVENT_RESPONSE 0x0002
+#define ISM_EVENT_REQUEST_IR 0x00000001
+#define ISM_EVENT_CODE_TESTLINK 0x83
+
+static void smcd_handle_sw_event(struct smc_ism_event_work *wrk)
+{
+ union {
+ u64 info;
+ struct {
+ u32 uid;
+ unsigned short vlanid;
+ u16 code;
+ };
+ } ev_info;
+
+ switch (wrk->event.code) {
+ case ISM_EVENT_CODE_TESTLINK: /* Activity timer */
+ ev_info.info = wrk->event.info;
+ if (ev_info.code == ISM_EVENT_REQUEST) {
+ ev_info.code = ISM_EVENT_RESPONSE;
+ wrk->smcd->ops->signal_event(wrk->smcd,
+ wrk->event.tok,
+ ISM_EVENT_REQUEST_IR,
+ ISM_EVENT_CODE_TESTLINK,
+ ev_info.info);
+ }
+ break;
+ }
+}
+
/* worker for SMC-D events */
static void smc_ism_event_work(struct work_struct *work)
{
@@ -196,6 +227,9 @@ static void smc_ism_event_work(struct work_struct *work)
break;
case ISM_EVENT_DMB:
break;
+ case ISM_EVENT_SWR: /* Software defined event */
+ smcd_handle_sw_event(wrk);
+ break;
}
kfree(wrk);
}
--
2.16.4
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH net-next 1/1] net/smc: send response to test link signal
2018-08-10 15:45 [PATCH net-next 1/1] net/smc: send response to test link signal Ursula Braun
@ 2018-08-10 21:39 ` David Miller
0 siblings, 0 replies; 2+ messages in thread
From: David Miller @ 2018-08-10 21:39 UTC (permalink / raw)
To: ubraun
Cc: netdev, linux-s390, schwidefsky, heiko.carstens, raspl, linux-kernel
From: Ursula Braun <ubraun@linux.ibm.com>
Date: Fri, 10 Aug 2018 17:45:11 +0200
> With SMC-D z/OS sends a test link signal every 10 seconds. Linux is
> supposed to answer, otherwise the SMC-D connection breaks.
>
> Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Applied.
^ permalink raw reply [flat|nested] 2+ messages in thread
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