From 66f9513a1213dfc5332b9675d206d47763b81761 Mon Sep 17 00:00:00 2001 From: Rasesh Mody Date: Tue, 17 Dec 2013 17:07:36 -0800 Subject: [PATCH] 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 Signed-off-by: David S. Miller --- drivers/net/ethernet/brocade/bna/bnad.c | 5 +++++ 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) \ -- 2.20.1