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| author | Mark Zhang <markzhang@nvidia.com> | 2024-06-16 19:08:38 +0300 |
|---|---|---|
| committer | Leon Romanovsky <leonro@nvidia.com> | 2024-07-01 15:38:05 +0300 |
| commit | a9e0facacfd16117ab69a73e29b1335b4648773d (patch) | |
| tree | 21272265bd6435f670a74cfbd1a7952999938d3b /drivers/infiniband/core/agent.c | |
| parent | 36e97bbc2dca61751c5b4b7f248cd850a7654a19 (diff) | |
| download | linux-a9e0facacfd16117ab69a73e29b1335b4648773d.tar.gz linux-a9e0facacfd16117ab69a73e29b1335b4648773d.tar.bz2 linux-a9e0facacfd16117ab69a73e29b1335b4648773d.zip | |
RDMA/core: Create GSI QP only when CM is supported
GSI QP is not needed if the port doesn't support connection management.
In following patches mlx5 is going to support IB ports that doesn't
support CM.
Signed-off-by: Mark Zhang <markzhang@nvidia.com>
Link: https://lore.kernel.org/r/c449ebd955923b0e54c58832fd322f9d461b37a0.1718553901.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Diffstat (limited to 'drivers/infiniband/core/agent.c')
| -rw-r--r-- | drivers/infiniband/core/agent.c | 32 |
1 files changed, 22 insertions, 10 deletions
diff --git a/drivers/infiniband/core/agent.c b/drivers/infiniband/core/agent.c index f82b4260de42..3bb46696731e 100644 --- a/drivers/infiniband/core/agent.c +++ b/drivers/infiniband/core/agent.c @@ -59,7 +59,16 @@ __ib_get_agent_port(const struct ib_device *device, int port_num) struct ib_agent_port_private *entry; list_for_each_entry(entry, &ib_agent_port_list, port_list) { - if (entry->agent[1]->device == device && + /* Need to check both agent[0] and agent[1], as an agent port + * may only have one of them + */ + if (entry->agent[0] && + entry->agent[0]->device == device && + entry->agent[0]->port_num == port_num) + return entry; + + if (entry->agent[1] && + entry->agent[1]->device == device && entry->agent[1]->port_num == port_num) return entry; } @@ -172,14 +181,16 @@ int ib_agent_port_open(struct ib_device *device, int port_num) } } - /* Obtain send only MAD agent for GSI QP */ - port_priv->agent[1] = ib_register_mad_agent(device, port_num, - IB_QPT_GSI, NULL, 0, - &agent_send_handler, - NULL, NULL, 0); - if (IS_ERR(port_priv->agent[1])) { - ret = PTR_ERR(port_priv->agent[1]); - goto error3; + if (rdma_cap_ib_cm(device, port_num)) { + /* Obtain send only MAD agent for GSI QP */ + port_priv->agent[1] = ib_register_mad_agent(device, port_num, + IB_QPT_GSI, NULL, 0, + &agent_send_handler, + NULL, NULL, 0); + if (IS_ERR(port_priv->agent[1])) { + ret = PTR_ERR(port_priv->agent[1]); + goto error3; + } } spin_lock_irqsave(&ib_agent_port_list_lock, flags); @@ -212,7 +223,8 @@ int ib_agent_port_close(struct ib_device *device, int port_num) list_del(&port_priv->port_list); spin_unlock_irqrestore(&ib_agent_port_list_lock, flags); - ib_unregister_mad_agent(port_priv->agent[1]); + if (port_priv->agent[1]) + ib_unregister_mad_agent(port_priv->agent[1]); if (port_priv->agent[0]) ib_unregister_mad_agent(port_priv->agent[0]); |