diff options
author | Andy Grover <andy.grover@oracle.com> | 2010-01-12 23:13:15 +0100 |
---|---|---|
committer | Andy Grover <andy.grover@oracle.com> | 2010-09-09 03:11:38 +0200 |
commit | ff87e97a9d70c9ae133d3d3d7792b26ab85f4297 (patch) | |
tree | 32de73cdf5e4353e89b3351eaae695f69faa868b /net/rds/send.c | |
parent | RDS: fold rdma.h into rds.h (diff) | |
download | linux-ff87e97a9d70c9ae133d3d3d7792b26ab85f4297.tar.xz linux-ff87e97a9d70c9ae133d3d3d7792b26ab85f4297.zip |
RDS: make m_rdma_op a member of rds_message
This eliminates a separate memory alloc, although
it is now necessary to add an "r_active" flag, since
it is no longer to use the m_rdma_op pointer as an
indicator of if an rdma op is present.
rdma SGs allocated from rm sg pool.
rds_rm_size also gets bigger. It's a little inefficient to
run through CMSGs twice, but it makes later steps a lot smoother.
Signed-off-by: Andy Grover <andy.grover@oracle.com>
Diffstat (limited to 'net/rds/send.c')
-rw-r--r-- | net/rds/send.c | 59 |
1 files changed, 44 insertions, 15 deletions
diff --git a/net/rds/send.c b/net/rds/send.c index 89e26ffdc812..72dbe7fc4f54 100644 --- a/net/rds/send.c +++ b/net/rds/send.c @@ -235,7 +235,7 @@ int rds_send_xmit(struct rds_connection *conn) * connection. * Therefore, we never retransmit messages with RDMA ops. */ - if (rm->rdma.m_rdma_op && + if (rm->rdma.m_rdma_op.r_active && test_bit(RDS_MSG_RETRANSMITTED, &rm->m_flags)) { spin_lock_irqsave(&conn->c_lock, flags); if (test_and_clear_bit(RDS_MSG_ON_CONN, &rm->m_flags)) @@ -267,8 +267,8 @@ int rds_send_xmit(struct rds_connection *conn) * keep this simple and require that the transport either * send the whole rdma or none of it. */ - if (rm->rdma.m_rdma_op && !conn->c_xmit_rdma_sent) { - ret = conn->c_trans->xmit_rdma(conn, rm->rdma.m_rdma_op); + if (rm->rdma.m_rdma_op.r_active && !conn->c_xmit_rdma_sent) { + ret = conn->c_trans->xmit_rdma(conn, &rm->rdma.m_rdma_op); if (ret) break; conn->c_xmit_rdma_sent = 1; @@ -418,9 +418,9 @@ void rds_rdma_send_complete(struct rds_message *rm, int status) spin_lock_irqsave(&rm->m_rs_lock, flags); - ro = rm->rdma.m_rdma_op; + ro = &rm->rdma.m_rdma_op; if (test_bit(RDS_MSG_ON_SOCK, &rm->m_flags) && - ro && ro->r_notify && ro->r_notifier) { + ro->r_active && ro->r_notify && ro->r_notifier) { notifier = ro->r_notifier; rs = rm->m_rs; sock_hold(rds_rs_to_sk(rs)); @@ -452,8 +452,8 @@ __rds_rdma_send_complete(struct rds_sock *rs, struct rds_message *rm, int status { struct rds_rdma_op *ro; - ro = rm->rdma.m_rdma_op; - if (ro && ro->r_notify && ro->r_notifier) { + ro = &rm->rdma.m_rdma_op; + if (ro->r_active && ro->r_notify && ro->r_notifier) { ro->r_notifier->n_status = status; list_add_tail(&ro->r_notifier->n_list, &rs->rs_notify_queue); ro->r_notifier = NULL; @@ -476,7 +476,7 @@ struct rds_message *rds_send_get_message(struct rds_connection *conn, spin_lock_irqsave(&conn->c_lock, flags); list_for_each_entry_safe(rm, tmp, &conn->c_retrans, m_conn_item) { - if (rm->rdma.m_rdma_op == op) { + if (&rm->rdma.m_rdma_op == op) { atomic_inc(&rm->m_refcount); found = rm; goto out; @@ -484,7 +484,7 @@ struct rds_message *rds_send_get_message(struct rds_connection *conn, } list_for_each_entry_safe(rm, tmp, &conn->c_send_queue, m_conn_item) { - if (rm->rdma.m_rdma_op == op) { + if (&rm->rdma.m_rdma_op == op) { atomic_inc(&rm->m_refcount); found = rm; break; @@ -544,19 +544,20 @@ void rds_send_remove_from_sock(struct list_head *messages, int status) spin_lock(&rs->rs_lock); if (test_and_clear_bit(RDS_MSG_ON_SOCK, &rm->m_flags)) { - struct rds_rdma_op *ro = rm->rdma.m_rdma_op; + struct rds_rdma_op *ro = &rm->rdma.m_rdma_op; struct rds_notifier *notifier; list_del_init(&rm->m_sock_item); rds_send_sndbuf_remove(rs, rm); - if (ro && ro->r_notifier && (status || ro->r_notify)) { + if (ro->r_active && ro->r_notifier && + (status || ro->r_notify)) { notifier = ro->r_notifier; list_add_tail(¬ifier->n_list, &rs->rs_notify_queue); if (!notifier->n_status) notifier->n_status = status; - rm->rdma.m_rdma_op->r_notifier = NULL; + rm->rdma.m_rdma_op.r_notifier = NULL; } was_on_sock = 1; rm->m_rs = NULL; @@ -763,9 +764,37 @@ out: */ static int rds_rm_size(struct msghdr *msg, int data_len) { + struct cmsghdr *cmsg; int size = 0; + int retval; + + for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) { + if (!CMSG_OK(msg, cmsg)) + return -EINVAL; + + if (cmsg->cmsg_level != SOL_RDS) + continue; + + switch (cmsg->cmsg_type) { + case RDS_CMSG_RDMA_ARGS: + retval = rds_rdma_extra_size(CMSG_DATA(cmsg)); + if (retval < 0) + return retval; + size += retval; + break; + + case RDS_CMSG_RDMA_DEST: + case RDS_CMSG_RDMA_MAP: + /* these are valid but do no add any size */ + break; + + default: + return -EINVAL; + } + + } - size += ceil(data_len, PAGE_SIZE) * sizeof(struct scatterlist); + size += ceil(data_len, PAGE_SIZE) * sizeof(struct scatterlist); return size; } @@ -896,11 +925,11 @@ int rds_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, if (ret) goto out; - if ((rm->m_rdma_cookie || rm->rdma.m_rdma_op) && + if ((rm->m_rdma_cookie || rm->rdma.m_rdma_op.r_active) && !conn->c_trans->xmit_rdma) { if (printk_ratelimit()) printk(KERN_NOTICE "rdma_op %p conn xmit_rdma %p\n", - rm->rdma.m_rdma_op, conn->c_trans->xmit_rdma); + &rm->rdma.m_rdma_op, conn->c_trans->xmit_rdma); ret = -EOPNOTSUPP; goto out; } |