qed: Optimize qed_chain datapath usage
The chain structure and functions are widely used by the qed* modules,
both for configuration and datapath.
E.g., qede's Tx has one such chain and its Rx has two.
Currently, the strucutre's fields which are required for datapath
related functions [produce/consume] are intertwined with fields which
are required only for configuration purposes [init/destroy/etc.].
This patch re-arranges the chain structure so that all the fields which
are required for datapath usage could reside in a single cacheline instead
of the two which are required today.
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/qlogic/qed/qed_dev.c b/drivers/net/ethernet/qlogic/qed/qed_dev.c
index 5be7b8a..80162ee 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_dev.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_dev.c
@@ -2283,12 +2283,12 @@ static void qed_chain_free_pbl(struct qed_dev *cdev, struct qed_chain *p_chain)
{
void **pp_virt_addr_tbl = p_chain->pbl.pp_virt_addr_tbl;
u32 page_cnt = p_chain->page_cnt, i, pbl_size;
- u8 *p_pbl_virt = p_chain->pbl.p_virt_table;
+ u8 *p_pbl_virt = p_chain->pbl_sp.p_virt_table;
if (!pp_virt_addr_tbl)
return;
- if (!p_chain->pbl.p_virt_table)
+ if (!p_pbl_virt)
goto out;
for (i = 0; i < page_cnt; i++) {
@@ -2306,7 +2306,8 @@ static void qed_chain_free_pbl(struct qed_dev *cdev, struct qed_chain *p_chain)
pbl_size = page_cnt * QED_CHAIN_PBL_ENTRY_SIZE;
dma_free_coherent(&cdev->pdev->dev,
pbl_size,
- p_chain->pbl.p_virt_table, p_chain->pbl.p_phys_table);
+ p_chain->pbl_sp.p_virt_table,
+ p_chain->pbl_sp.p_phys_table);
out:
vfree(p_chain->pbl.pp_virt_addr_tbl);
}