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cnic: Improve ->iscsi_nl_msg_send()

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1. Change first parameter from cnic_dev to ulp_handle which is the hba
pointer.  All other similar upcalls are using hba pointer.  The callee
can then directly reference the hba without conversion.

2. Change return value from void to int so that an error code can be
passed back.  This allows the operation to be retried.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2010-12-23 07:42:58 +00:00 committed by David S. Miller
parent 8adc9240f9
commit 939b82e5bd
3 changed files with 25 additions and 12 deletions
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21
drivers/net/cnic.c
View file

@ -279,6 +279,7 @@ static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
u32 msg_type = ISCSI_KEVENT_IF_DOWN;
struct cnic_ulp_ops *ulp_ops;
struct cnic_uio_dev *udev = cp->udev;
int rc = 0, retry = 0;
if (!udev || udev->uio_dev == -1)
return -ENODEV;
@ -303,11 +304,21 @@ static int cnic_send_nlmsg(struct cnic_local *cp, u32 type,
path_req.pmtu = csk->mtu;
}
rcu_read_lock();
ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]);
if (ulp_ops)
ulp_ops->iscsi_nl_send_msg(cp->dev, msg_type, buf, len);
rcu_read_unlock();
while (retry < 3) {
rc = 0;
rcu_read_lock();
ulp_ops = rcu_dereference(cnic_ulp_tbl[CNIC_ULP_ISCSI]);
if (ulp_ops)
rc = ulp_ops->iscsi_nl_send_msg(
cp->ulp_handle[CNIC_ULP_ISCSI],
msg_type, buf, len);
rcu_read_unlock();
if (rc == 0 || msg_type != ISCSI_KEVENT_PATH_REQ)
break;
msleep(100);
retry++;
}
return 0;
}

2
drivers/net/cnic_if.h
View file

@ -301,7 +301,7 @@ struct cnic_ulp_ops {
void (*cm_abort_complete)(struct cnic_sock *);
void (*cm_remote_close)(struct cnic_sock *);
void (*cm_remote_abort)(struct cnic_sock *);
void (*iscsi_nl_send_msg)(struct cnic_dev *dev, u32 msg_type,
int (*iscsi_nl_send_msg)(void *ulp_ctx, u32 msg_type,
char *data, u16 data_size);
struct module *owner;
atomic_t ref_count;

14
drivers/scsi/bnx2i/bnx2i_hwi.c
View file

@ -2346,19 +2346,21 @@ static void bnx2i_cm_remote_abort(struct cnic_sock *cm_sk)
}
static void bnx2i_send_nl_mesg(struct cnic_dev *dev, u32 msg_type,
static int bnx2i_send_nl_mesg(void *context, u32 msg_type,
char *buf, u16 buflen)
{
struct bnx2i_hba *hba;
struct bnx2i_hba *hba = context;
int rc;
hba = bnx2i_find_hba_for_cnic(dev);
if (!hba)
return;
return -ENODEV;
if (iscsi_offload_mesg(hba->shost, &bnx2i_iscsi_transport,
msg_type, buf, buflen))
rc = iscsi_offload_mesg(hba->shost, &bnx2i_iscsi_transport,
msg_type, buf, buflen);
if (rc)
printk(KERN_ALERT "bnx2i: private nl message send error\n");
return rc;
}