| Message ID | 1601268657-940-7-git-send-email-muneendra.kumar@broadcom.com |
|---|---|
| State | New |
| Headers | show |
| Series | scsi: Support to handle Intermittent errors | expand |
On 9/28/20 6:50 AM, Muneendra wrote: > Added a new rport state FC_PORTSTATE_MARGINAL. > > Made changes in fc_remote_port_chkready function to treat marginal and > online as same > > Added a new inline function fc_rport_chkmarginal_set_noretries > which will set the SCMD_NORETRIES_ABORT bit in cmd->state if rport state > is marginal. > > Signed-off-by: Muneendra <muneendra.kumar@broadcom.com> > > --- > v2: > New patch > --- > include/scsi/scsi_transport_fc.h | 24 ++++++++++++++++++++++++ > 1 file changed, 24 insertions(+) > > diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h > index 1c7dd35cb7a0..ee99c6ca7e45 100644 > --- a/include/scsi/scsi_transport_fc.h > +++ b/include/scsi/scsi_transport_fc.h > @@ -14,6 +14,7 @@ > #include <linux/bsg-lib.h> > #include <asm/unaligned.h> > #include <scsi/scsi.h> > +#include <scsi/scsi_cmnd.h> > #include <scsi/scsi_netlink.h> > #include <scsi/scsi_host.h> > > @@ -67,6 +68,7 @@ enum fc_port_state { > FC_PORTSTATE_ERROR, > FC_PORTSTATE_LOOPBACK, > FC_PORTSTATE_DELETED, > + FC_PORTSTATE_MARGINAL, > }; > > > @@ -383,6 +385,7 @@ struct fc_starget_attrs { /* aka fc_target_attrs */ > u64 node_name; > u64 port_name; > u32 port_id; > + enum fc_port_state port_state; > }; > > #define fc_starget_node_name(x) \ > @@ -391,6 +394,8 @@ struct fc_starget_attrs { /* aka fc_target_attrs */ > (((struct fc_starget_attrs *)&(x)->starget_data)->port_name) > #define fc_starget_port_id(x) \ > (((struct fc_starget_attrs *)&(x)->starget_data)->port_id) > +#define fc_starget_port_state(x) \ > + (((struct fc_starget_attrs *)&(x)->starget_data)->port_state) > > #define starget_to_rport(s) \ > scsi_is_fc_rport(s->dev.parent) ? dev_to_rport(s->dev.parent) : NULL This should be moved to the next patch. > @@ -723,6 +728,7 @@ fc_remote_port_chkready(struct fc_rport *rport) > > switch (rport->port_state) { > case FC_PORTSTATE_ONLINE: > + case FC_PORTSTATE_MARGINAL: > if (rport->roles & FC_PORT_ROLE_FCP_TARGET) > result = 0; > else if (rport->flags & FC_RPORT_DEVLOSS_PENDING) > @@ -743,6 +749,24 @@ fc_remote_port_chkready(struct fc_rport *rport) > return result; > } > > +/** > + * fc_rport_chkmarginal_set_noretries - Set the SCMD_NORETRIES_ABORT bit > + * in cmd->state if port state is marginal prior to initiating > + * io to the port. > + * @rport: remote port to be checked > + * @scmd: scsi_cmd > + **/ > +static inline void > +fc_rport_chkmarginal_set_noretries(struct fc_rport *rport, struct scsi_cmnd *cmd) > +{ > + if ((rport->port_state == FC_PORTSTATE_MARGINAL) && > + (cmd->request->cmd_flags & REQ_FAILFAST_TRANSPORT)) > + set_bit(SCMD_NORETRIES_ABORT, &cmd->state); > + else > + clear_bit(SCMD_NORETRIES_ABORT, &cmd->state); > + > +} > + > static inline u64 wwn_to_u64(const u8 *wwn) > { > return get_unaligned_be64(wwn); > ??? Where is this function used ? I thought this was done with the iterators in the previous patch. Cheers, Hannes -- Dr. Hannes Reinecke Kernel Storage Architect hare@suse.de +49 911 74053 688 SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg HRB 36809 (AG Nürnberg), GF: Felix Imendörffer
diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h index 1c7dd35cb7a0..ee99c6ca7e45 100644 --- a/include/scsi/scsi_transport_fc.h +++ b/include/scsi/scsi_transport_fc.h @@ -14,6 +14,7 @@ #include <linux/bsg-lib.h> #include <asm/unaligned.h> #include <scsi/scsi.h> +#include <scsi/scsi_cmnd.h> #include <scsi/scsi_netlink.h> #include <scsi/scsi_host.h> @@ -67,6 +68,7 @@ enum fc_port_state { FC_PORTSTATE_ERROR, FC_PORTSTATE_LOOPBACK, FC_PORTSTATE_DELETED, + FC_PORTSTATE_MARGINAL, }; @@ -383,6 +385,7 @@ struct fc_starget_attrs { /* aka fc_target_attrs */ u64 node_name; u64 port_name; u32 port_id; + enum fc_port_state port_state; }; #define fc_starget_node_name(x) \ @@ -391,6 +394,8 @@ struct fc_starget_attrs { /* aka fc_target_attrs */ (((struct fc_starget_attrs *)&(x)->starget_data)->port_name) #define fc_starget_port_id(x) \ (((struct fc_starget_attrs *)&(x)->starget_data)->port_id) +#define fc_starget_port_state(x) \ + (((struct fc_starget_attrs *)&(x)->starget_data)->port_state) #define starget_to_rport(s) \ scsi_is_fc_rport(s->dev.parent) ? dev_to_rport(s->dev.parent) : NULL @@ -723,6 +728,7 @@ fc_remote_port_chkready(struct fc_rport *rport) switch (rport->port_state) { case FC_PORTSTATE_ONLINE: + case FC_PORTSTATE_MARGINAL: if (rport->roles & FC_PORT_ROLE_FCP_TARGET) result = 0; else if (rport->flags & FC_RPORT_DEVLOSS_PENDING) @@ -743,6 +749,24 @@ fc_remote_port_chkready(struct fc_rport *rport) return result; } +/** + * fc_rport_chkmarginal_set_noretries - Set the SCMD_NORETRIES_ABORT bit + * in cmd->state if port state is marginal prior to initiating + * io to the port. + * @rport: remote port to be checked + * @scmd: scsi_cmd + **/ +static inline void +fc_rport_chkmarginal_set_noretries(struct fc_rport *rport, struct scsi_cmnd *cmd) +{ + if ((rport->port_state == FC_PORTSTATE_MARGINAL) && + (cmd->request->cmd_flags & REQ_FAILFAST_TRANSPORT)) + set_bit(SCMD_NORETRIES_ABORT, &cmd->state); + else + clear_bit(SCMD_NORETRIES_ABORT, &cmd->state); + +} + static inline u64 wwn_to_u64(const u8 *wwn) { return get_unaligned_be64(wwn);
Added a new rport state FC_PORTSTATE_MARGINAL. Made changes in fc_remote_port_chkready function to treat marginal and online as same Added a new inline function fc_rport_chkmarginal_set_noretries which will set the SCMD_NORETRIES_ABORT bit in cmd->state if rport state is marginal. Signed-off-by: Muneendra <muneendra.kumar@broadcom.com> --- v2: New patch --- include/scsi/scsi_transport_fc.h | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+)