@@ -540,6 +540,11 @@ bnad_cq_setup_skb_frags(struct bna_rcb *rcb, struct sk_buff *skb,
unmap_q = rcb->unmap_q;
bnad = rcb->bnad;
+
+ /* prefetch header */
+ prefetch(page_address(unmap_q->unmap[sop_ci].page) +
+ unmap_q->unmap[sop_ci].page_offset);
+
for (vec = 1, ci = sop_ci; vec <= nvecs; vec++) {
unmap = &unmap_q->unmap[ci];
BNA_QE_INDX_INC(ci, rcb->q_depth);
@@ -84,7 +84,7 @@ struct bnad_rx_ctrl {
#define BNAD_IOCETH_TIMEOUT 10000
#define BNAD_MIN_Q_DEPTH 512
-#define BNAD_MAX_RXQ_DEPTH 2048
+#define BNAD_MAX_RXQ_DEPTH 16384
#define BNAD_MAX_TXQ_DEPTH 2048
#define BNAD_JUMBO_MTU 9000
@@ -233,13 +233,13 @@ struct bnad_tx_unmap {
struct bnad_rx_vector {
DEFINE_DMA_UNMAP_ADDR(dma_addr);
u32 len;
-};
+} __packed;
struct bnad_rx_unmap {
struct page *page;
- u32 page_offset;
struct sk_buff *skb;
struct bnad_rx_vector vector;
+ u32 page_offset;
};
enum bnad_rxbuf_type {
@@ -257,7 +257,7 @@ struct bnad_rx_unmap_q {
int alloc_order;
u32 map_size;
enum bnad_rxbuf_type type;
- struct bnad_rx_unmap unmap[0];
+ struct bnad_rx_unmap unmap[0] ____cacheline_aligned;
};
#define BNAD_PCI_DEV_IS_CAT2(_bnad) \
Change Details: - Prefetch header in GRO path. This reduces napi_frags_skb time from 9% to 5%. - Changed the configurable limit of RxQ depth to 16384 (was 2048). - Rx unmap structure of 40 bytes is packed to 32 bytes reducing unmap_q size by 16K. - bnad_rx_unmap_q elements are cachealigned. Signed-off-by: Rasesh Mody <rmody@brocade.com> --- drivers/net/ethernet/brocade/bna/bnad.c | 5 +++++ drivers/net/ethernet/brocade/bna/bnad.h | 8 ++++---- 2 files changed, 9 insertions(+), 4 deletions(-)