From e779137aa76d38d5c33a98ed887092ae4e4f016f Mon Sep 17 00:00:00 2001 From: Andy Grover Date: Tue, 12 Jan 2010 12:15:02 -0800 Subject: RDS: break out rdma and data ops into nested structs in rds_message Clearly separate rdma-related variables in rm from data-related ones. This is in anticipation of adding atomic support. Signed-off-by: Andy Grover --- net/rds/ib_send.c | 44 +++++++++++++++++++++++--------------------- 1 file changed, 23 insertions(+), 21 deletions(-) (limited to 'net/rds/ib_send.c') diff --git a/net/rds/ib_send.c b/net/rds/ib_send.c index 0b0090d..5375020 100644 --- a/net/rds/ib_send.c +++ b/net/rds/ib_send.c @@ -83,11 +83,11 @@ static void rds_ib_send_unmap_rm(struct rds_ib_connection *ic, rdsdebug("ic %p send %p rm %p\n", ic, send, rm); ib_dma_unmap_sg(ic->i_cm_id->device, - rm->m_sg, rm->m_nents, - DMA_TO_DEVICE); + rm->data.m_sg, rm->data.m_nents, + DMA_TO_DEVICE); - if (rm->m_rdma_op) { - rds_ib_send_unmap_rdma(ic, rm->m_rdma_op); + if (rm->rdma.m_rdma_op) { + rds_ib_send_unmap_rdma(ic, rm->rdma.m_rdma_op); /* If the user asked for a completion notification on this * message, we can implement three different semantics: @@ -111,10 +111,10 @@ static void rds_ib_send_unmap_rm(struct rds_ib_connection *ic, */ rds_ib_send_rdma_complete(rm, wc_status); - if (rm->m_rdma_op->r_write) - rds_stats_add(s_send_rdma_bytes, rm->m_rdma_op->r_bytes); + if (rm->rdma.m_rdma_op->r_write) + rds_stats_add(s_send_rdma_bytes, rm->rdma.m_rdma_op->r_bytes); else - rds_stats_add(s_recv_rdma_bytes, rm->m_rdma_op->r_bytes); + rds_stats_add(s_recv_rdma_bytes, rm->rdma.m_rdma_op->r_bytes); } /* If anyone waited for this message to get flushed out, wake @@ -244,8 +244,8 @@ void rds_ib_send_cq_comp_handler(struct ib_cq *cq, void *context) rm = rds_send_get_message(conn, send->s_op); if (rm) { - if (rm->m_rdma_op) - rds_ib_send_unmap_rdma(ic, rm->m_rdma_op); + if (rm->rdma.m_rdma_op) + rds_ib_send_unmap_rdma(ic, rm->rdma.m_rdma_op); rds_ib_send_rdma_complete(rm, wc.status); rds_message_put(rm); } @@ -532,18 +532,20 @@ int rds_ib_xmit(struct rds_connection *conn, struct rds_message *rm, rm->m_inc.i_hdr.h_flags, be32_to_cpu(rm->m_inc.i_hdr.h_len)); */ - if (rm->m_nents) { - rm->m_count = ib_dma_map_sg(dev, - rm->m_sg, rm->m_nents, DMA_TO_DEVICE); - rdsdebug("ic %p mapping rm %p: %d\n", ic, rm, rm->m_count); - if (rm->m_count == 0) { + if (rm->data.m_nents) { + rm->data.m_count = ib_dma_map_sg(dev, + rm->data.m_sg, + rm->data.m_nents, + DMA_TO_DEVICE); + rdsdebug("ic %p mapping rm %p: %d\n", ic, rm, rm->data.m_count); + if (rm->data.m_count == 0) { rds_ib_stats_inc(s_ib_tx_sg_mapping_failure); rds_ib_ring_unalloc(&ic->i_send_ring, work_alloc); ret = -ENOMEM; /* XXX ? */ goto out; } } else { - rm->m_count = 0; + rm->data.m_count = 0; } ic->i_unsignaled_wrs = rds_ib_sysctl_max_unsig_wrs; @@ -559,10 +561,10 @@ int rds_ib_xmit(struct rds_connection *conn, struct rds_message *rm, /* If it has a RDMA op, tell the peer we did it. This is * used by the peer to release use-once RDMA MRs. */ - if (rm->m_rdma_op) { + if (rm->rdma.m_rdma_op) { struct rds_ext_header_rdma ext_hdr; - ext_hdr.h_rdma_rkey = cpu_to_be32(rm->m_rdma_op->r_key); + ext_hdr.h_rdma_rkey = cpu_to_be32(rm->rdma.m_rdma_op->r_key); rds_message_add_extension(&rm->m_inc.i_hdr, RDS_EXTHDR_RDMA, &ext_hdr, sizeof(ext_hdr)); } @@ -590,7 +592,7 @@ int rds_ib_xmit(struct rds_connection *conn, struct rds_message *rm, send = &ic->i_sends[pos]; first = send; prev = NULL; - scat = &rm->m_sg[sg]; + scat = &rm->data.m_sg[sg]; sent = 0; i = 0; @@ -600,7 +602,7 @@ int rds_ib_xmit(struct rds_connection *conn, struct rds_message *rm, * or when requested by the user. Right now, we let * the application choose. */ - if (rm->m_rdma_op && rm->m_rdma_op->r_fence) + if (rm->rdma.m_rdma_op && rm->rdma.m_rdma_op->r_fence) send_flags = IB_SEND_FENCE; /* @@ -619,7 +621,7 @@ int rds_ib_xmit(struct rds_connection *conn, struct rds_message *rm, } /* if there's data reference it with a chain of work reqs */ - for (; i < work_alloc && scat != &rm->m_sg[rm->m_count]; i++) { + for (; i < work_alloc && scat != &rm->data.m_sg[rm->data.m_count]; i++) { unsigned int len; send = &ic->i_sends[pos]; @@ -697,7 +699,7 @@ add_header: sent += sizeof(struct rds_header); /* if we finished the message then send completion owns it */ - if (scat == &rm->m_sg[rm->m_count]) { + if (scat == &rm->data.m_sg[rm->data.m_count]) { prev->s_rm = ic->i_rm; prev->s_wr.send_flags |= IB_SEND_SIGNALED | IB_SEND_SOLICITED; ic->i_rm = NULL; -- cgit v1.1