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| author | Michael Chan <mchan@broadcom.com> | 2009-07-27 11:25:58 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-07-27 11:25:58 -0700 |
| commit | 6d7760a88c25057c2c2243e5dfe2d731064bd31d (patch) | |
| tree | 6bc0eba235e8a4cd3ada1627cffa2ca7c6e60d4d /drivers/net/cnic.c | |
| parent | 0cbb0a781a42f131e9c6836554f402cb85f8f38b (diff) | |
| download | linux-6d7760a88c25057c2c2243e5dfe2d731064bd31d.tar.gz linux-6d7760a88c25057c2c2243e5dfe2d731064bd31d.tar.bz2 linux-6d7760a88c25057c2c2243e5dfe2d731064bd31d.zip | |
cnic: Fix ISCSI_KEVENT_IF_DOWN message handling.
When a net device goes down or when the bnx2i driver is unloaded,
the code was not generating the ISCSI_KEVENT_IF_DOWN message
properly and this could cause the userspace driver to crash.
This is fixed by sending the message properly in the shutdown path.
cnic_uio_stop() is also added to send the message when bnx2i is
unregistering.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/cnic.c')
| -rw-r--r-- | drivers/net/cnic.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/drivers/net/cnic.c b/drivers/net/cnic.c index 4d1515f45ba2..4869d77cbe91 100644 --- a/drivers/net/cnic.c +++ b/drivers/net/cnic.c @@ -227,7 +227,7 @@ static int cnic_send_nlmsg(struct cnic_local *cp, u32 type, } rcu_read_lock(); - ulp_ops = rcu_dereference(cp->ulp_ops[CNIC_ULP_ISCSI]); + 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(); @@ -319,6 +319,20 @@ static int cnic_abort_prep(struct cnic_sock *csk) return 0; } +static void cnic_uio_stop(void) +{ + struct cnic_dev *dev; + + read_lock(&cnic_dev_lock); + list_for_each_entry(dev, &cnic_dev_list, list) { + struct cnic_local *cp = dev->cnic_priv; + + if (cp->cnic_uinfo) + cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL); + } + read_unlock(&cnic_dev_lock); +} + int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops) { struct cnic_dev *dev; @@ -390,6 +404,9 @@ int cnic_unregister_driver(int ulp_type) } read_unlock(&cnic_dev_lock); + if (ulp_type == CNIC_ULP_ISCSI) + cnic_uio_stop(); + rcu_assign_pointer(cnic_ulp_tbl[ulp_type], NULL); mutex_unlock(&cnic_lock); @@ -632,7 +649,6 @@ static void cnic_free_resc(struct cnic_dev *dev) int i = 0; if (cp->cnic_uinfo) { - cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL); while (cp->uio_dev != -1 && i < 15) { msleep(100); i++; @@ -1057,6 +1073,9 @@ static void cnic_ulp_stop(struct cnic_dev *dev) struct cnic_local *cp = dev->cnic_priv; int if_type; + if (cp->cnic_uinfo) + cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL); + rcu_read_lock(); for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) { struct cnic_ulp_ops *ulp_ops; |