diff options
| author | Sathya Perla <sathya.perla@emulex.com> | 2015-01-05 05:48:34 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-01-05 16:32:53 -0500 |
| commit | 5f07b3c51abe330c3dd702622c419efffb5757f0 (patch) | |
| tree | c666cc118eaac0087e79fa33119cb69507a1b748 /drivers/net/ethernet/emulex/benet/be.h | |
| parent | 889ee2c7d70e1ae9fc9341d0e82676c519ffede2 (diff) | |
| download | talos-obmc-linux-5f07b3c51abe330c3dd702622c419efffb5757f0.tar.gz talos-obmc-linux-5f07b3c51abe330c3dd702622c419efffb5757f0.zip | |
be2net: support TX batching using skb->xmit_more flag
This patch uses skb->xmit_more flag to batch TX requests.
TX is flushed either when xmit_more is false or there is
no more space in the TXQ.
Skyhawk-R and BEx chips require an even number of wrbs to be posted.
So, when a batch of TX requests is accumulated, the last header wrb
may need to be fixed with an extra dummy wrb.
This patch refactors be_xmit() routine as a sequence of be_xmit_enqueue()
and be_xmit_flush() calls. The Tx completion code is also
updated to be able to unmap/free a batch of skbs rather than a single
skb.
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/emulex/benet/be.h')
| -rw-r--r-- | drivers/net/ethernet/emulex/benet/be.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h index 712e7f8e1df7..9fa2569f56cb 100644 --- a/drivers/net/ethernet/emulex/benet/be.h +++ b/drivers/net/ethernet/emulex/benet/be.h @@ -243,7 +243,6 @@ struct be_tx_stats { u64 tx_bytes; u64 tx_pkts; u64 tx_reqs; - u64 tx_wrbs; u64 tx_compl; ulong tx_jiffies; u32 tx_stops; @@ -266,6 +265,9 @@ struct be_tx_obj { /* Remember the skbs that were transmitted */ struct sk_buff *sent_skb_list[TX_Q_LEN]; struct be_tx_stats stats; + u16 pend_wrb_cnt; /* Number of WRBs yet to be given to HW */ + u16 last_req_wrb_cnt; /* wrb cnt of the last req in the Q */ + u16 last_req_hdr; /* index of the last req's hdr-wrb */ } ____cacheline_aligned_in_smp; /* Struct to remember the pages posted for rx frags */ |
