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| author |   Ursula Braun <ubraun@linux.ibm.com> | 2018-08-10 17:45:11 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-08-10 14:38:43 -0700 |
| commit | 0d86caff06363151df21603eb1f4e3207ea91bd2 (patch) | |
| tree | 3b2fcbd52b79bf61771147ef81a0155943aeda2c /net/smc | |
| parent | Merge branch 'r8169-smaller-improvements' (diff) | |
| download | linux-dev-0d86caff06363151df21603eb1f4e3207ea91bd2.tar.xz linux-dev-0d86caff06363151df21603eb1f4e3207ea91bd2.zip | |
net/smc: send response to test link signal
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>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc')
| -rw-r--r-- | net/smc/smc_ism.c | 34 |
1 files changed, 34 insertions, 0 deletions
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); } |