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| author | Max Gurtovoy <maxg@mellanox.com> | 2017-02-19 20:08:03 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-02-22 13:34:00 -0700 |
| commit | 8f4e8dace3d182132c8ffbcf243dda85def6c209 (patch) | |
| tree | 12a483b6b3bcd3cf9b9d0ebbda5b54be02a44d27 /drivers/nvme | |
| parent | 6ccaeb56004a14329b033968a687324c96d295bf (diff) | |
| download | linux-8f4e8dace3d182132c8ffbcf243dda85def6c209.tar.bz2 | |
nvme-rdma: add support for host_traddr
This will enable the user to control the specific interface for
connection establishment in case the host has more than 1 interface
under the same subnet.
E.g:
Host interfaces configured as:
- ib0 1.1.1.1/16
- ib1 1.1.1.2/16
Target interfaces configured as:
- ib0 1.1.1.3/16 (listener interface)
- ib1 1.1.1.4/16
the following connect command will go through host iface ib0 (default):
nvme connect -t rdma -n testsubsystem -a 1.1.1.3 -s 1023
but the following command will go through host iface ib1:
nvme connect -t rdma -n testsubsystem -a 1.1.1.3 -s 1023 -w 1.1.1.2
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/nvme')
| -rw-r--r-- | drivers/nvme/host/rdma.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c index ee789b38bae5..49b2121af689 100644 --- a/drivers/nvme/host/rdma.c +++ b/drivers/nvme/host/rdma.c @@ -133,6 +133,10 @@ struct nvme_rdma_ctrl { struct sockaddr addr; struct sockaddr_in addr_in; }; + union { + struct sockaddr src_addr; + struct sockaddr_in src_addr_in; + }; struct nvme_ctrl ctrl; }; @@ -545,6 +549,7 @@ static int nvme_rdma_init_queue(struct nvme_rdma_ctrl *ctrl, int idx, size_t queue_size) { struct nvme_rdma_queue *queue; + struct sockaddr *src_addr = NULL; int ret; queue = &ctrl->queues[idx]; @@ -567,7 +572,10 @@ static int nvme_rdma_init_queue(struct nvme_rdma_ctrl *ctrl, } queue->cm_error = -ETIMEDOUT; - ret = rdma_resolve_addr(queue->cm_id, NULL, &ctrl->addr, + if (ctrl->ctrl.opts->mask & NVMF_OPT_HOST_TRADDR) + src_addr = &ctrl->src_addr; + + ret = rdma_resolve_addr(queue->cm_id, src_addr, &ctrl->addr, NVME_RDMA_CONNECT_TIMEOUT_MS); if (ret) { dev_info(ctrl->ctrl.device, @@ -1883,6 +1891,16 @@ static struct nvme_ctrl *nvme_rdma_create_ctrl(struct device *dev, goto out_free_ctrl; } + if (opts->mask & NVMF_OPT_HOST_TRADDR) { + ret = nvme_rdma_parse_ipaddr(&ctrl->src_addr_in, + opts->host_traddr); + if (ret) { + pr_err("malformed src IP address passed: %s\n", + opts->host_traddr); + goto out_free_ctrl; + } + } + if (opts->mask & NVMF_OPT_TRSVCID) { u16 port; @@ -1994,7 +2012,8 @@ out_free_ctrl: static struct nvmf_transport_ops nvme_rdma_transport = { .name = "rdma", .required_opts = NVMF_OPT_TRADDR, - .allowed_opts = NVMF_OPT_TRSVCID | NVMF_OPT_RECONNECT_DELAY, + .allowed_opts = NVMF_OPT_TRSVCID | NVMF_OPT_RECONNECT_DELAY | + NVMF_OPT_HOST_TRADDR, .create_ctrl = nvme_rdma_create_ctrl, }; |