diff options
| author |   Alexandra Winter <wintera@linux.ibm.com> | 2020-09-10 19:23:44 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-09-15 13:21:46 -0700 |
| commit | 4fea49a79ece30f27ce3bb8fa9dd2a19e354e750 (patch) | |
| tree | a44518c38c88116b573a9f416057010a11d334c3 /drivers/s390/cio/chsc.c | |
| parent | tcp: schedule EPOLLOUT after a partial sendmsg (diff) | |
| download | linux-dev-4fea49a79ece30f27ce3bb8fa9dd2a19e354e750.tar.xz linux-dev-4fea49a79ece30f27ce3bb8fa9dd2a19e354e750.zip | |
s390/cio: Add new Operation Code OC3 to PNSO
Add support for operation code 3 (OC3) of the
Perform-Network-Subchannel-Operations (PNSO) function
of the Channel-Subsystem-Call (CHSC) instruction.
PNSO provides 2 operation codes:
OC0 - BRIDGE_INFO
OC3 - ADDR_INFO (new)
Extend the function calls to *pnso* to pass the OC and
add new response code 0108.
Support for OC3 is indicated by a flag in the css_general_characteristics.
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Reviewed-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Reviewed-by: Vineeth Vijayan <vneethv@linux.ibm.com>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/s390/cio/chsc.c')
| -rw-r--r-- | drivers/s390/cio/chsc.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c index c314e9495c1b..8f764a295a51 100644 --- a/drivers/s390/cio/chsc.c +++ b/drivers/s390/cio/chsc.c @@ -65,6 +65,8 @@ int chsc_error_from_response(int response) case 0x0100: case 0x0102: return -ENOMEM; + case 0x0108: /* "HW limit exceeded" for the op 0x003d */ + return -EUSERS; default: return -EIO; } @@ -1340,6 +1342,7 @@ EXPORT_SYMBOL_GPL(chsc_scm_info); * chsc_pnso() - Perform Network-Subchannel Operation * @schid: id of the subchannel on which PNSO is performed * @pnso_area: request and response block for the operation + * @oc: Operation Code * @resume_token: resume token for multiblock response * @cnc: Boolean change-notification control * @@ -1347,10 +1350,8 @@ EXPORT_SYMBOL_GPL(chsc_scm_info); * * Returns 0 on success. */ -int chsc_pnso(struct subchannel_id schid, - struct chsc_pnso_area *pnso_area, - struct chsc_pnso_resume_token resume_token, - int cnc) +int chsc_pnso(struct subchannel_id schid, struct chsc_pnso_area *pnso_area, + u8 oc, struct chsc_pnso_resume_token resume_token, int cnc) { memset(pnso_area, 0, sizeof(*pnso_area)); pnso_area->request.length = 0x0030; @@ -1359,7 +1360,7 @@ int chsc_pnso(struct subchannel_id schid, pnso_area->ssid = schid.ssid; pnso_area->sch = schid.sch_no; pnso_area->cssid = schid.cssid; - pnso_area->oc = 0; /* Store-network-bridging-information list */ + pnso_area->oc = oc; pnso_area->resume_token = resume_token; pnso_area->n = (cnc != 0); if (chsc(pnso_area)) |