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| author | Stefan Raspl <raspl@linux.ibm.com> | 2023-03-13 11:10:31 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-03-15 08:18:35 +0000 |
| commit | f947568e258038d3c2f8f38a9a7dabaca36643ec (patch) | |
| tree | 431528050109cb67610a278c977301a723c1125a /drivers/s390/net | |
| parent | 45ef71d108e6f1545e2981d8af03be13f2e39411 (diff) | |
| download | lwn-f947568e258038d3c2f8f38a9a7dabaca36643ec.tar.gz lwn-f947568e258038d3c2f8f38a9a7dabaca36643ec.zip | |
net/smc: Introduce explicit check for v2 support
Previously, v2 support was derived from a very specific format of the SEID
as part of the SMC-D codebase. Make this part of the SMC-D device API, so
implementers do not need to adhere to a specific SEID format.
Signed-off-by: Stefan Raspl <raspl@linux.ibm.com>
Reviewed-and-tested-by: Jan Karcher <jaka@linux.ibm.com>
Reviewed-by: Wenjia Zhang <wenjia@linux.ibm.com>
Signed-off-by: Wenjia Zhang <wenjia@linux.ibm.com>
Reviewed-by: Tony Lu <tonylu@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/s390/net')
| -rw-r--r-- | drivers/s390/net/ism_drv.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/s390/net/ism_drv.c b/drivers/s390/net/ism_drv.c index eb7e13486087..1c73d32966f1 100644 --- a/drivers/s390/net/ism_drv.c +++ b/drivers/s390/net/ism_drv.c @@ -842,6 +842,12 @@ static int smcd_move(struct smcd_dev *smcd, u64 dmb_tok, unsigned int idx, return ism_move(smcd->priv, dmb_tok, idx, sf, offset, data, size); } +static int smcd_supports_v2(void) +{ + return SYSTEM_EID.serial_number[0] != '0' || + SYSTEM_EID.type[0] != '0'; +} + static u64 smcd_get_local_gid(struct smcd_dev *smcd) { return ism_get_local_gid(smcd->priv); @@ -869,6 +875,7 @@ static const struct smcd_ops ism_ops = { .reset_vlan_required = smcd_reset_vlan_required, .signal_event = smcd_signal_ieq, .move_data = smcd_move, + .supports_v2 = smcd_supports_v2, .get_system_eid = ism_get_seid, .get_local_gid = smcd_get_local_gid, .get_chid = smcd_get_chid, |