system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-10-24 12:17:07 +00:00
Code Issues Packages Projects Releases Wiki Activity

be2net: Fix INTx processing for Lancer

Browse source 
Lancer does not have HW registers to indicate the EQ causing the INTx
interrupt. As a result EQE entries of one EQ may be consumed when interrupt
is caused by another EQ. Fix this by arming CQs at the end of NAPI poll
routine to regenerate the EQEs.

Signed-off-by: Padmanabh Ratnakar <padmanabh.ratnakar@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Padmanabh Ratnakar 2011-12-19 01:53:35 +00:00 committed by David S. Miller
parent 81259c6124
commit 93c86700c0
1 changed files with 9 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
drivers/net/ethernet/emulex/benet/be_main.c
View file

@ -1970,6 +1970,7 @@ static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
struct be_adapter *adapter =
container_of(tx_eq, struct be_adapter, tx_eq);
struct be_mcc_obj *mcc_obj = &adapter->mcc_obj;
struct be_tx_obj *txo;
struct be_eth_tx_compl *txcp;
int tx_compl, mcc_compl, status = 0;
@ -2006,12 +2007,19 @@ static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
mcc_compl = be_process_mcc(adapter, &status);
if (mcc_compl) {
struct be_mcc_obj *mcc_obj = &adapter->mcc_obj;
be_cq_notify(adapter, mcc_obj->cq.id, true, mcc_compl);
}
napi_complete(napi);
/* Arm CQ again to regenerate EQEs for Lancer in INTx mode */
if (lancer_chip(adapter) && !msix_enabled(adapter)) {
for_all_tx_queues(adapter, txo, i)
be_cq_notify(adapter, txo->cq.id, true, 0);
be_cq_notify(adapter, mcc_obj->cq.id, true, 0);
}
be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
adapter->drv_stats.tx_events++;
return 1;