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net/ncsi: Allow to extend NCSI request properties 

There is only one NCSI request property for now: the response for
the sent command need drive the workqueue or not. So we had one
field (@driven) for the purpose. We lost the flexibility to extend
NCSI request properties.

This replaces @driven with @flags and @req_flags in NCSI request
and NCSI command argument struct. Each bit of the newly introduced
field can be used for one property. No functional changes introduced.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Gavin Shan 2016-10-04 11:25:51 +11:00 committed by David S. Miller
parent a15af54f8f
commit a0509cbeef
4 changed files with 17 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
net/ncsi/internal.h
View File

@ -207,7 +207,8 @@ struct ncsi_package {
struct ncsi_request {
unsigned char id; /* Request ID - 0 to 255 */
bool used; /* Request that has been assigned */
bool driven; /* Drive state machine */
unsigned int flags; /* NCSI request property */
#define NCSI_REQ_FLAG_EVENT_DRIVEN 1
struct ncsi_dev_priv *ndp; /* Associated NCSI device */
struct sk_buff *cmd; /* Associated NCSI command packet */
struct sk_buff *rsp; /* Associated NCSI response packet */
@ -276,7 +277,7 @@ struct ncsi_cmd_arg {
unsigned char package; /* Destination package ID */
unsigned char channel; /* Detination channel ID or 0x1f */
unsigned short payload; /* Command packet payload length */
bool driven; /* Drive the state machine? */
unsigned int req_flags; /* NCSI request properties */
union {
unsigned char bytes[16]; /* Command packet specific data */
unsigned short words[8];
@ -315,7 +316,8 @@ void ncsi_find_package_and_channel(struct ncsi_dev_priv *ndp,
unsigned char id,
struct ncsi_package **np,
struct ncsi_channel **nc);
struct ncsi_request *ncsi_alloc_request(struct ncsi_dev_priv *ndp, bool driven);
struct ncsi_request *ncsi_alloc_request(struct ncsi_dev_priv *ndp,
unsigned int req_flags);
void ncsi_free_request(struct ncsi_request *nr);
struct ncsi_dev *ncsi_find_dev(struct net_device *dev);
int ncsi_process_next_channel(struct ncsi_dev_priv *ndp);

2
net/ncsi/ncsi-cmd.c
View File

@ -272,7 +272,7 @@ static struct ncsi_request *ncsi_alloc_command(struct ncsi_cmd_arg *nca)
struct sk_buff *skb;
struct ncsi_request *nr;
nr = ncsi_alloc_request(ndp, nca->driven);
nr = ncsi_alloc_request(ndp, nca->req_flags);
if (!nr)
return NULL;

19
net/ncsi/ncsi-manage.c
View File

@ -194,7 +194,7 @@ static void ncsi_channel_monitor(unsigned long data)
nca.package = np->id;
nca.channel = nc->id;
nca.type = NCSI_PKT_CMD_GLS;
nca.driven = false;
nca.req_flags = 0;
ret = ncsi_xmit_cmd(&nca);
if (ret) {
netdev_err(ndp->ndev.dev, "Error %d sending GLS\n",
@ -419,7 +419,8 @@ void ncsi_find_package_and_channel(struct ncsi_dev_priv *ndp,
* be same. Otherwise, the bogus response might be replied. So
* the available IDs are allocated in round-robin fashion.
*/
struct ncsi_request *ncsi_alloc_request(struct ncsi_dev_priv *ndp, bool driven)
struct ncsi_request *ncsi_alloc_request(struct ncsi_dev_priv *ndp,
unsigned int req_flags)
{
struct ncsi_request *nr = NULL;
int i, limit = ARRAY_SIZE(ndp->requests);
@ -433,7 +434,7 @@ struct ncsi_request *ncsi_alloc_request(struct ncsi_dev_priv *ndp, bool driven)
nr = &ndp->requests[i];
nr->used = true;
nr->driven = driven;
nr->flags = req_flags;
ndp->request_id = i + 1;
goto found;
}
@ -445,7 +446,7 @@ struct ncsi_request *ncsi_alloc_request(struct ncsi_dev_priv *ndp, bool driven)
nr = &ndp->requests[i];
nr->used = true;
nr->driven = driven;
nr->flags = req_flags;
ndp->request_id = i + 1;
goto found;
}
@ -473,7 +474,7 @@ void ncsi_free_request(struct ncsi_request *nr)
nr->cmd = NULL;
nr->rsp = NULL;
nr->used = false;
driven = nr->driven;
driven = !!(nr->flags & NCSI_REQ_FLAG_EVENT_DRIVEN);
spin_unlock_irqrestore(&ndp->lock, flags);
if (driven && cmd && --ndp->pending_req_num == 0)
@ -527,7 +528,7 @@ static void ncsi_suspend_channel(struct ncsi_dev_priv *ndp)
int ret;
nca.ndp = ndp;
nca.driven = true;
nca.req_flags = NCSI_REQ_FLAG_EVENT_DRIVEN;
switch (nd->state) {
case ncsi_dev_state_suspend:
nd->state = ncsi_dev_state_suspend_select;
@ -596,7 +597,7 @@ static void ncsi_configure_channel(struct ncsi_dev_priv *ndp)
int ret;
nca.ndp = ndp;
nca.driven = true;
nca.req_flags = NCSI_REQ_FLAG_EVENT_DRIVEN;
switch (nd->state) {
case ncsi_dev_state_config:
case ncsi_dev_state_config_sp:
@ -825,7 +826,7 @@ static void ncsi_probe_channel(struct ncsi_dev_priv *ndp)
int ret;
nca.ndp = ndp;
nca.driven = true;
nca.req_flags = NCSI_REQ_FLAG_EVENT_DRIVEN;
switch (nd->state) {
case ncsi_dev_state_probe:
nd->state = ncsi_dev_state_probe_deselect;
@ -1101,7 +1102,7 @@ static int ncsi_inet6addr_event(struct notifier_block *this,
return NOTIFY_OK;
nca.ndp = ndp;
nca.driven = false;
nca.req_flags = 0;
nca.package = np->id;
nca.channel = nc->id;
nca.dwords[0] = nc->caps[NCSI_CAP_MC].cap;

2
net/ncsi/ncsi-rsp.c
View File

@ -317,7 +317,7 @@ static int ncsi_rsp_handler_gls(struct ncsi_request *nr)
ncm->data[3] = ntohl(rsp->other);
ncm->data[4] = ntohl(rsp->oem_status);
if (nr->driven)
if (nr->flags & NCSI_REQ_FLAG_EVENT_DRIVEN)
return 0;
/* Reset the channel monitor if it has been enabled */