diff options
| author |   Rasesh Mody <rmody@brocade.com> | 2013-12-17 17:07:36 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-12-18 00:30:33 -0500 |
| commit | 66f9513a1213dfc5332b9675d206d47763b81761 (patch) | |
| tree | 1b8aa8835fbe4e1d18ca436ac97430b83b62d888 | |
| parent | bna: Enable Multi Buffer RX (diff) | |
| download | linux-dev-66f9513a1213dfc5332b9675d206d47763b81761.tar.xz linux-dev-66f9513a1213dfc5332b9675d206d47763b81761.zip | |
bna: RX Processing and Config Changes
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).
- bnad_rx_unmap_q elements are cachealigned.
Signed-off-by: Rasesh Mody <rmody@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/brocade/bna/bnad.c | 5 | ||||
| -rw-r--r-- | drivers/net/ethernet/brocade/bna/bnad.h | 6 |
2 files changed, 8 insertions, 3 deletions
diff --git a/drivers/net/ethernet/brocade/bna/bnad.c b/drivers/net/ethernet/brocade/bna/bnad.c index 0e9f8f5b6009..3061dc5e7a64 100644 --- a/drivers/net/ethernet/brocade/bna/bnad.c +++ b/drivers/net/ethernet/brocade/bna/bnad.c @@ -536,6 +536,11 @@ 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); diff --git a/drivers/net/ethernet/brocade/bna/bnad.h b/drivers/net/ethernet/brocade/bna/bnad.h index 2e6b943262a2..5816a6e7a238 100644 --- a/drivers/net/ethernet/brocade/bna/bnad.h +++ b/drivers/net/ethernet/brocade/bna/bnad.h @@ -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 @@ -237,9 +237,9 @@ struct bnad_rx_vector { 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) \ |