iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ehea: Remove force_irq logic in napi poll routine

Browse Source 
commit 18604c5485 (ehea: NAPI multi queue TX/RX path for SMP) added
driver specific logic for exiting napi mode. I'm not sure what it was
trying to solve and it should be up to the network stack to decide when
we are done polling so remove it.

v3:
[cascardo] Fixed extra parentheses.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Anton Blanchard 2011-10-14 05:31:00 +00:00 committed by David S. Miller
parent b95644685d
commit 222ca96b69
2 changed files with 3 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/ethernet/ibm/ehea/ehea.h
View File

@ -383,7 +383,6 @@ struct ehea_port_res {
u64 tx_bytes;
u64 rx_packets;
u64 rx_bytes;
u32 poll_counter;
struct net_lro_mgr lro_mgr;
struct net_lro_desc lro_desc[MAX_LRO_DESCRIPTORS];
int sq_restart_flag;

11
drivers/net/ethernet/ibm/ehea/ehea_main.c
View File

@ -926,7 +926,6 @@ static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
return cqe;
}
#define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
#define EHEA_POLL_MAX_CQES 65535
static int ehea_poll(struct napi_struct *napi, int budget)
@ -936,18 +935,13 @@ static int ehea_poll(struct napi_struct *napi, int budget)
struct net_device *dev = pr->port->netdev;
struct ehea_cqe *cqe;
struct ehea_cqe *cqe_skb = NULL;
int force_irq, wqe_index;
int wqe_index;
int rx = 0;
force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
if (!force_irq)
rx += ehea_proc_rwqes(dev, pr, budget - rx);
while ((rx != budget) || force_irq) {
pr->poll_counter = 0;
force_irq = 0;
while (rx != budget) {
napi_complete(napi);
ehea_reset_cq_ep(pr->recv_cq);
ehea_reset_cq_ep(pr->send_cq);
@ -967,7 +961,6 @@ static int ehea_poll(struct napi_struct *napi, int budget)
rx += ehea_proc_rwqes(dev, pr, budget - rx);
}
pr->poll_counter++;
return rx;
}