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authorRoland Dreier <rdreier@cisco.com>2007-10-09 15:48:56 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:55:32 -0700
commit59e90b2d22500f2e9cc635793562154abc8f4621 (patch)
tree99b76e904933d1cdd04a577d7c69d3a30ab116e1
parent61ba5b3c14b4956493d1180e0a860e941108393e (diff)
ibm_emac: Convert to use napi_struct independent of struct net_device
Commit da3dedd9 ("[NET]: Make NAPI polling independent of struct net_device objects.") changed the interface to NAPI polling. Fix up the ibm_newemac driver so that it works with this new interface. This is actually a nice cleanup because ibm_newemac is one of the drivers that wants to have multiple NAPI structures for a single net_device. Compile-tested only as I don't have a system that uses the ibm_newemac driver. This conversion the conversion for the ibm_emac driver that was tested on real PowerPC 440SPe hardware. Signed-off-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
-rw-r--r--drivers/net/ibm_newemac/mal.c55
-rw-r--r--drivers/net/ibm_newemac/mal.h2
2 files changed, 20 insertions, 37 deletions
diff --git a/drivers/net/ibm_newemac/mal.c b/drivers/net/ibm_newemac/mal.c
index c4335b7d308..58854117b1a 100644
--- a/drivers/net/ibm_newemac/mal.c
+++ b/drivers/net/ibm_newemac/mal.c
@@ -235,10 +235,10 @@ static irqreturn_t mal_serr(int irq, void *dev_instance)
static inline void mal_schedule_poll(struct mal_instance *mal)
{
- if (likely(netif_rx_schedule_prep(&mal->poll_dev))) {
+ if (likely(napi_schedule_prep(&mal->napi))) {
MAL_DBG2(mal, "schedule_poll" NL);
mal_disable_eob_irq(mal);
- __netif_rx_schedule(&mal->poll_dev);
+ __napi_schedule(&mal->napi);
} else
MAL_DBG2(mal, "already in poll" NL);
}
@@ -318,8 +318,7 @@ void mal_poll_disable(struct mal_instance *mal, struct mal_commac *commac)
msleep(1);
/* Synchronize with the MAL NAPI poller. */
- while (test_bit(__LINK_STATE_RX_SCHED, &mal->poll_dev.state))
- msleep(1);
+ napi_disable(&mal->napi);
}
void mal_poll_enable(struct mal_instance *mal, struct mal_commac *commac)
@@ -330,11 +329,11 @@ void mal_poll_enable(struct mal_instance *mal, struct mal_commac *commac)
// XXX might want to kick a poll now...
}
-static int mal_poll(struct net_device *ndev, int *budget)
+static int mal_poll(struct napi_struct *napi, int budget)
{
- struct mal_instance *mal = netdev_priv(ndev);
+ struct mal_instance *mal = container_of(napi, struct mal_instance, napi);
struct list_head *l;
- int rx_work_limit = min(ndev->quota, *budget), received = 0, done;
+ int received = 0;
unsigned long flags;
MAL_DBG2(mal, "poll(%d) %d ->" NL, *budget,
@@ -358,26 +357,21 @@ static int mal_poll(struct net_device *ndev, int *budget)
int n;
if (unlikely(test_bit(MAL_COMMAC_POLL_DISABLED, &mc->flags)))
continue;
- n = mc->ops->poll_rx(mc->dev, rx_work_limit);
+ n = mc->ops->poll_rx(mc->dev, budget);
if (n) {
received += n;
- rx_work_limit -= n;
- if (rx_work_limit <= 0) {
- done = 0;
- // XXX What if this is the last one ?
- goto more_work;
- }
+ budget -= n;
+ if (budget <= 0)
+ goto more_work; // XXX What if this is the last one ?
}
}
/* We need to disable IRQs to protect from RXDE IRQ here */
spin_lock_irqsave(&mal->lock, flags);
- __netif_rx_complete(ndev);
+ __napi_complete(napi);
mal_enable_eob_irq(mal);
spin_unlock_irqrestore(&mal->lock, flags);
- done = 1;
-
/* Check for "rotting" packet(s) */
list_for_each(l, &mal->poll_list) {
struct mal_commac *mc =
@@ -387,12 +381,12 @@ static int mal_poll(struct net_device *ndev, int *budget)
if (unlikely(mc->ops->peek_rx(mc->dev) ||
test_bit(MAL_COMMAC_RX_STOPPED, &mc->flags))) {
MAL_DBG2(mal, "rotting packet" NL);
- if (netif_rx_reschedule(ndev, received))
+ if (napi_reschedule(napi))
mal_disable_eob_irq(mal);
else
MAL_DBG2(mal, "already in poll list" NL);
- if (rx_work_limit > 0)
+ if (budget > 0)
goto again;
else
goto more_work;
@@ -401,13 +395,8 @@ static int mal_poll(struct net_device *ndev, int *budget)
}
more_work:
- ndev->quota -= received;
- *budget -= received;
-
- MAL_DBG2(mal, "poll() %d <- %d" NL, *budget,
- done ? 0 : 1);
-
- return done ? 0 : 1;
+ MAL_DBG2(mal, "poll() %d <- %d" NL, budget, received);
+ return received;
}
static void mal_reset(struct mal_instance *mal)
@@ -538,11 +527,8 @@ static int __devinit mal_probe(struct of_device *ofdev,
}
INIT_LIST_HEAD(&mal->poll_list);
- set_bit(__LINK_STATE_START, &mal->poll_dev.state);
- mal->poll_dev.weight = CONFIG_IBM_NEW_EMAC_POLL_WEIGHT;
- mal->poll_dev.poll = mal_poll;
- mal->poll_dev.priv = mal;
- atomic_set(&mal->poll_dev.refcnt, 1);
+ mal->napi.weight = CONFIG_IBM_NEW_EMAC_POLL_WEIGHT;
+ mal->napi.poll = mal_poll;
INIT_LIST_HEAD(&mal->list);
spin_lock_init(&mal->lock);
@@ -653,11 +639,8 @@ static int __devexit mal_remove(struct of_device *ofdev)
MAL_DBG(mal, "remove" NL);
- /* Syncronize with scheduled polling,
- stolen from net/core/dev.c:dev_close()
- */
- clear_bit(__LINK_STATE_START, &mal->poll_dev.state);
- netif_poll_disable(&mal->poll_dev);
+ /* Synchronize with scheduled polling */
+ napi_disable(&mal->napi);
if (!list_empty(&mal->list)) {
/* This is *very* bad */
diff --git a/drivers/net/ibm_newemac/mal.h b/drivers/net/ibm_newemac/mal.h
index 57b69dc32e9..cb1a16d589f 100644
--- a/drivers/net/ibm_newemac/mal.h
+++ b/drivers/net/ibm_newemac/mal.h
@@ -197,7 +197,7 @@ struct mal_instance {
int serr_irq; /* MAL System Error IRQ */
struct list_head poll_list;
- struct net_device poll_dev;
+ struct napi_struct napi;
struct list_head list;
u32 tx_chan_mask;