diff options
Diffstat (limited to 'drivers/infiniband/ulp/ipoib/ipoib.h')
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib.h | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib.h b/drivers/infiniband/ulp/ipoib/ipoib.h index 73b2b176ad0..f1f142dc64b 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib.h +++ b/drivers/infiniband/ulp/ipoib/ipoib.h @@ -56,11 +56,11 @@ /* constants */ enum { - IPOIB_PACKET_SIZE = 2048, - IPOIB_BUF_SIZE = IPOIB_PACKET_SIZE + IB_GRH_BYTES, - IPOIB_ENCAP_LEN = 4, + IPOIB_UD_HEAD_SIZE = IB_GRH_BYTES + IPOIB_ENCAP_LEN, + IPOIB_UD_RX_SG = 2, /* max buffer needed for 4K mtu */ + IPOIB_CM_MTU = 0x10000 - 0x10, /* padding to align header to 16 */ IPOIB_CM_BUF_SIZE = IPOIB_CM_MTU + IPOIB_ENCAP_LEN, IPOIB_CM_HEAD_SIZE = IPOIB_CM_BUF_SIZE % PAGE_SIZE, @@ -139,7 +139,7 @@ struct ipoib_mcast { struct ipoib_rx_buf { struct sk_buff *skb; - u64 mapping; + u64 mapping[IPOIB_UD_RX_SG]; }; struct ipoib_tx_buf { @@ -294,6 +294,7 @@ struct ipoib_dev_priv { unsigned int admin_mtu; unsigned int mcast_mtu; + unsigned int max_ib_mtu; struct ipoib_rx_buf *rx_ring; @@ -305,6 +306,9 @@ struct ipoib_dev_priv { struct ib_send_wr tx_wr; unsigned tx_outstanding; + struct ib_recv_wr rx_wr; + struct ib_sge rx_sge[IPOIB_UD_RX_SG]; + struct ib_wc ibwc[IPOIB_NUM_WC]; struct list_head dead_ahs; @@ -366,6 +370,14 @@ struct ipoib_neigh { struct list_head list; }; +#define IPOIB_UD_MTU(ib_mtu) (ib_mtu - IPOIB_ENCAP_LEN) +#define IPOIB_UD_BUF_SIZE(ib_mtu) (ib_mtu + IB_GRH_BYTES) + +static inline int ipoib_ud_need_sg(unsigned int ib_mtu) +{ + return IPOIB_UD_BUF_SIZE(ib_mtu) > PAGE_SIZE; +} + /* * We stash a pointer to our private neighbour information after our * hardware address in neigh->ha. The ALIGN() expression here makes |