From 1bae4dbf9576e563da23927e4078fffbbce67a75 Mon Sep 17 00:00:00 2001 From: Hal Rosenstock Date: Mon, 14 May 2007 17:21:52 -0400 Subject: IB/mad: Enhance SMI for switch support Extend the SMI with switch (intermediate hop) support. Care has been taken to ensure that the CA (and router) code paths are changed as little as possible. Signed-off-by: Suresh Shelvapille Signed-off-by: Hal Rosenstock Signed-off-by: Roland Dreier --- drivers/infiniband/core/smi.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) (limited to 'drivers/infiniband/core/smi.c') diff --git a/drivers/infiniband/core/smi.c b/drivers/infiniband/core/smi.c index 2bca753..8723675 100644 --- a/drivers/infiniband/core/smi.c +++ b/drivers/infiniband/core/smi.c @@ -192,7 +192,7 @@ enum smi_action smi_handle_dr_smp_recv(struct ib_smp *smp, u8 node_type, } /* smp->hop_ptr updated when sending */ return (node_type == RDMA_NODE_IB_SWITCH ? - IB_SMI_HANDLE: IB_SMI_DISCARD); + IB_SMI_HANDLE : IB_SMI_DISCARD); } /* C14-13:4 -- hop_ptr = 0 -> give to SM */ @@ -211,7 +211,7 @@ enum smi_forward_action smi_check_forward_dr_smp(struct ib_smp *smp) if (!ib_get_smp_direction(smp)) { /* C14-9:2 -- intermediate hop */ if (hop_ptr && hop_ptr < hop_cnt) - return IB_SMI_SEND; + return IB_SMI_FORWARD; /* C14-9:3 -- at the end of the DR segment of path */ if (hop_ptr == hop_cnt) @@ -224,7 +224,7 @@ enum smi_forward_action smi_check_forward_dr_smp(struct ib_smp *smp) } else { /* C14-13:2 -- intermediate hop */ if (2 <= hop_ptr && hop_ptr <= hop_cnt) - return IB_SMI_SEND; + return IB_SMI_FORWARD; /* C14-13:3 -- at the end of the DR segment of path */ if (hop_ptr == 1) @@ -233,3 +233,13 @@ enum smi_forward_action smi_check_forward_dr_smp(struct ib_smp *smp) } return IB_SMI_LOCAL; } + +/* + * Return the forwarding port number from initial_path for outgoing SMP and + * from return_path for returning SMP + */ +int smi_get_fwd_port(struct ib_smp *smp) +{ + return (!ib_get_smp_direction(smp) ? smp->initial_path[smp->hop_ptr+1] : + smp->return_path[smp->hop_ptr-1]); +} -- cgit v1.1