diff options
| -rw-r--r-- | net/rds/ib.h | 24 | ||||
| -rw-r--r-- | net/rds/ib_recv.c | 22 | ||||
| -rw-r--r-- | net/rds/ib_send.c | 32 |
3 files changed, 23 insertions, 55 deletions
diff --git a/net/rds/ib.h b/net/rds/ib.h index 426035ac54a1..dbf8d6e31493 100644 --- a/net/rds/ib.h +++ b/net/rds/ib.h @@ -356,28 +356,4 @@ extern unsigned long rds_ib_sysctl_max_recv_allocation; extern unsigned int rds_ib_sysctl_flow_control; extern ctl_table rds_ib_sysctl_table[]; -/* - * Helper functions for getting/setting the header and data SGEs in - * RDS packets (not RDMA) - * - * From version 3.1 onwards, header is in front of data in the sge. - */ -static inline struct ib_sge * -rds_ib_header_sge(struct rds_ib_connection *ic, struct ib_sge *sge) -{ - if (ic->conn->c_version > RDS_PROTOCOL_3_0) - return &sge[0]; - else - return &sge[1]; -} - -static inline struct ib_sge * -rds_ib_data_sge(struct rds_ib_connection *ic, struct ib_sge *sge) -{ - if (ic->conn->c_version > RDS_PROTOCOL_3_0) - return &sge[1]; - else - return &sge[0]; -} - #endif diff --git a/net/rds/ib_recv.c b/net/rds/ib_recv.c index a68a3a721c6c..e9fe08a86c40 100644 --- a/net/rds/ib_recv.c +++ b/net/rds/ib_recv.c @@ -95,15 +95,15 @@ void rds_ib_recv_init_ring(struct rds_ib_connection *ic) recv->r_wr.sg_list = recv->r_sge; recv->r_wr.num_sge = RDS_IB_RECV_SGE; - sge = rds_ib_data_sge(ic, recv->r_sge); - sge->addr = 0; - sge->length = RDS_FRAG_SIZE; - sge->lkey = ic->i_mr->lkey; - - sge = rds_ib_header_sge(ic, recv->r_sge); + sge = &recv->r_sge[0]; sge->addr = ic->i_recv_hdrs_dma + (i * sizeof(struct rds_header)); sge->length = sizeof(struct rds_header); sge->lkey = ic->i_mr->lkey; + + sge = &recv->r_sge[1]; + sge->addr = 0; + sge->length = RDS_FRAG_SIZE; + sge->lkey = ic->i_mr->lkey; } } @@ -190,14 +190,14 @@ static int rds_ib_recv_refill_one(struct rds_connection *conn, recv->r_frag->f_offset = ic->i_frag.f_offset; recv->r_frag->f_mapped = dma_addr; - sge = rds_ib_data_sge(ic, recv->r_sge); - sge->addr = dma_addr; - sge->length = RDS_FRAG_SIZE; - - sge = rds_ib_header_sge(ic, recv->r_sge); + sge = &recv->r_sge[0]; sge->addr = ic->i_recv_hdrs_dma + (recv - ic->i_recvs) * sizeof(struct rds_header); sge->length = sizeof(struct rds_header); + sge = &recv->r_sge[1]; + sge->addr = dma_addr; + sge->length = RDS_FRAG_SIZE; + get_page(recv->r_frag->f_page); if (ic->i_frag.f_offset < RDS_PAGE_LAST_OFF) { diff --git a/net/rds/ib_send.c b/net/rds/ib_send.c index e86908497fcf..46026d9091f1 100644 --- a/net/rds/ib_send.c +++ b/net/rds/ib_send.c @@ -156,18 +156,14 @@ void rds_ib_send_init_ring(struct rds_ib_connection *ic) send->s_wr.wr_id = i; send->s_wr.sg_list = send->s_sge; - send->s_wr.num_sge = 1; - send->s_wr.opcode = IB_WR_SEND; - send->s_wr.send_flags = 0; send->s_wr.ex.imm_data = 0; - sge = rds_ib_data_sge(ic, send->s_sge); - sge->lkey = ic->i_mr->lkey; - - sge = rds_ib_header_sge(ic, send->s_sge); + sge = &send->s_sge[0]; sge->addr = ic->i_send_hdrs_dma + (i * sizeof(struct rds_header)); sge->length = sizeof(struct rds_header); sge->lkey = ic->i_mr->lkey; + + send->s_sge[1].lkey = ic->i_mr->lkey; } } @@ -441,28 +437,24 @@ rds_ib_xmit_populate_wr(struct rds_ib_connection *ic, send->s_wr.send_flags = send_flags; send->s_wr.opcode = IB_WR_SEND; - send->s_wr.num_sge = 2; + send->s_wr.num_sge = 1; send->s_wr.next = NULL; send->s_queued = jiffies; send->s_op = NULL; + sge = &send->s_sge[0]; + sge->addr = ic->i_send_hdrs_dma + (pos * sizeof(struct rds_header)); + sge->length = sizeof(struct rds_header); + sge->lkey = ic->i_mr->lkey; + if (length != 0) { - sge = rds_ib_data_sge(ic, send->s_sge); + send->s_wr.num_sge = 2; + + sge = &send->s_sge[1]; sge->addr = buffer; sge->length = length; sge->lkey = ic->i_mr->lkey; - - sge = rds_ib_header_sge(ic, send->s_sge); - } else { - /* We're sending a packet with no payload. There is only - * one SGE */ - send->s_wr.num_sge = 1; - sge = &send->s_sge[0]; } - - sge->addr = ic->i_send_hdrs_dma + (pos * sizeof(struct rds_header)); - sge->length = sizeof(struct rds_header); - sge->lkey = ic->i_mr->lkey; } /* |