RDS/IB+IW: Move recv processing to a tasklet

[safe/jmp/linux-2.6] / net / rds / ib_recv.c

diff --git a/net/rds/ib_recv.c b/net/rds/ib_recv.c
index 2f009d3..fe5ab8c 100644 (file)
--- a/net/rds/ib_recv.c
+++ b/net/rds/ib_recv.c
@@ -825,17 +825,22 @@ void rds_ib_recv_cq_comp_handler(struct ib_cq *cq, void *context)
 {
        struct rds_connection *conn = context;
        struct rds_ib_connection *ic = conn->c_transport_data;
-       struct ib_wc wc;
-       struct rds_ib_ack_state state = { 0, };
-       struct rds_ib_recv_work *recv;
 
        rdsdebug("conn %p cq %p\n", conn, cq);
 
        rds_ib_stats_inc(s_ib_rx_cq_call);
 
-       ib_req_notify_cq(cq, IB_CQ_SOLICITED);
+       tasklet_schedule(&ic->i_recv_tasklet);
+}
 
-       while (ib_poll_cq(cq, 1, &wc) > 0) {
+static inline void rds_poll_cq(struct rds_ib_connection *ic,
+                              struct rds_ib_ack_state *state)
+{
+       struct rds_connection *conn = ic->conn;
+       struct ib_wc wc;
+       struct rds_ib_recv_work *recv;
+
+       while (ib_poll_cq(ic->i_recv_cq, 1, &wc) > 0) {
                rdsdebug("wc wr_id 0x%llx status %u byte_len %u imm_data %u\n",
                         (unsigned long long)wc.wr_id, wc.status, wc.byte_len,
                         be32_to_cpu(wc.ex.imm_data));
@@ -853,7 +858,7 @@ void rds_ib_recv_cq_comp_handler(struct ib_cq *cq, void *context)
                if (rds_conn_up(conn) || rds_conn_connecting(conn)) {
                        /* We expect errors as the qp is drained during shutdown */
                        if (wc.status == IB_WC_SUCCESS) {
-                               rds_ib_process_recv(conn, recv, wc.byte_len, &state);
+                               rds_ib_process_recv(conn, recv, wc.byte_len, state);
                        } else {
                                rds_ib_conn_error(conn, "recv completion on "
                                       "%pI4 had status %u, disconnecting and "
@@ -864,6 +869,17 @@ void rds_ib_recv_cq_comp_handler(struct ib_cq *cq, void *context)
 
                rds_ib_ring_free(&ic->i_recv_ring, 1);
        }
+}
+
+void rds_ib_recv_tasklet_fn(unsigned long data)
+{
+       struct rds_ib_connection *ic = (struct rds_ib_connection *) data;
+       struct rds_connection *conn = ic->conn;
+       struct rds_ib_ack_state state = { 0, };
+
+       rds_poll_cq(ic, &state);
+       ib_req_notify_cq(ic->i_recv_cq, IB_CQ_SOLICITED);
+       rds_poll_cq(ic, &state);
 
        if (state.ack_next_valid)
                rds_ib_set_ack(ic, state.ack_next, state.ack_required);