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fix a bug when a device has 1 tx (or rx) queue and more than

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one queue of a different type.

Submitted by:	Vincenzo Maffione
MFC after:	3 days
This commit is contained in:
Luigi Rizzo 2013-11-05 00:56:07 +00:00
parent 5ab0d24d48
commit 954dca4c99
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=257665
1 changed files with 5 additions and 4 deletions
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9
sys/dev/netmap/netmap.c
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@ -2684,7 +2684,7 @@ netmap_poll(struct cdev *dev, int events, struct thread *td)
struct netmap_adapter *na;
struct ifnet *ifp;
struct netmap_kring *kring;
u_int i, check_all, want_tx, want_rx, revents = 0;
u_int i, check_all_tx, check_all_rx, want_tx, want_rx, revents = 0;
u_int lim_tx, lim_rx, host_forwarded = 0;
struct mbq q = { NULL, NULL, 0 };
void *pwait = dev; /* linux compatibility */
@ -2759,7 +2759,8 @@ netmap_poll(struct cdev *dev, int events, struct thread *td)
* there are pending packets to send. The latter can be disabled
* passing NETMAP_NO_TX_POLL in the NIOCREG call.
*/
check_all = (priv->np_qlast == NETMAP_HW_RING) && (lim_tx > 1 || lim_rx > 1);
check_all_tx = (priv->np_qlast == NETMAP_HW_RING) && (lim_tx > 1);
check_all_rx = (priv->np_qlast == NETMAP_HW_RING) && (lim_rx > 1);
if (priv->np_qlast != NETMAP_HW_RING) {
lim_tx = lim_rx = priv->np_qlast;
@ -2833,7 +2834,7 @@ netmap_poll(struct cdev *dev, int events, struct thread *td)
nm_kr_put(kring);
}
if (want_tx && retry_tx) {
selrecord(td, check_all ?
selrecord(td, check_all_tx ?
&na->tx_si : &na->tx_rings[priv->np_qfirst].si);
retry_tx = 0;
goto flush_tx;
@ -2879,7 +2880,7 @@ netmap_poll(struct cdev *dev, int events, struct thread *td)
}
if (retry_rx) {
retry_rx = 0;
selrecord(td, check_all ?
selrecord(td, check_all_rx ?
&na->rx_si : &na->rx_rings[priv->np_qfirst].si);
goto do_retry_rx;
}