Commit bb13985d authored by Israel Rukshin's avatar Israel Rukshin Committed by Sagi Grimberg

nvme-tcp: Add TOS for tcp transport

TOS provide clients the ability to segregate traffic flows for
different type of data.
One of the TOS usage is bandwidth management which allows setting bandwidth
limits for QoS classes, e.g. 80% bandwidth to controllers at QoS class A
and 20% to controllers at QoS class B.

usage examples:
nvme connect --tos=0 --transport=tcp --traddr=10.0.1.1 --nqn=test-nvme
Signed-off-by: default avatarIsrael Rukshin <israelr@mellanox.com>
Reviewed-by: default avatarMax Gurtovoy <maxg@mellanox.com>
Signed-off-by: default avatarSagi Grimberg <sagi@grimberg.me>
parent 9924b030
...@@ -1304,6 +1304,18 @@ static int nvme_tcp_alloc_queue(struct nvme_ctrl *nctrl, ...@@ -1304,6 +1304,18 @@ static int nvme_tcp_alloc_queue(struct nvme_ctrl *nctrl,
goto err_sock; goto err_sock;
} }
/* Set socket type of service */
if (nctrl->opts->tos >= 0) {
opt = nctrl->opts->tos;
ret = kernel_setsockopt(queue->sock, SOL_IP, IP_TOS,
(char *)&opt, sizeof(opt));
if (ret) {
dev_err(nctrl->device,
"failed to set IP_TOS sock opt %d\n", ret);
goto err_sock;
}
}
queue->sock->sk->sk_allocation = GFP_ATOMIC; queue->sock->sk->sk_allocation = GFP_ATOMIC;
if (!qid) if (!qid)
n = 0; n = 0;
...@@ -2344,7 +2356,8 @@ static struct nvmf_transport_ops nvme_tcp_transport = { ...@@ -2344,7 +2356,8 @@ static struct nvmf_transport_ops nvme_tcp_transport = {
.allowed_opts = NVMF_OPT_TRSVCID | NVMF_OPT_RECONNECT_DELAY | .allowed_opts = NVMF_OPT_TRSVCID | NVMF_OPT_RECONNECT_DELAY |
NVMF_OPT_HOST_TRADDR | NVMF_OPT_CTRL_LOSS_TMO | NVMF_OPT_HOST_TRADDR | NVMF_OPT_CTRL_LOSS_TMO |
NVMF_OPT_HDR_DIGEST | NVMF_OPT_DATA_DIGEST | NVMF_OPT_HDR_DIGEST | NVMF_OPT_DATA_DIGEST |
NVMF_OPT_NR_WRITE_QUEUES | NVMF_OPT_NR_POLL_QUEUES, NVMF_OPT_NR_WRITE_QUEUES | NVMF_OPT_NR_POLL_QUEUES |
NVMF_OPT_TOS,
.create_ctrl = nvme_tcp_create_ctrl, .create_ctrl = nvme_tcp_create_ctrl,
}; };
......
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