diff options
| author | Wunderlich, Mark <mark.wunderlich@intel.com> | 2020-01-16 03:46:16 +0300 |
|---|---|---|
| committer | Keith Busch <kbusch@kernel.org> | 2020-03-04 20:09:09 +0300 |
| commit | 43cc66892e81bb05283159e489a19cec177e6f9d (patch) | |
| tree | 8af393148b8794ffec4f245ccf32dfa6ee35a154 /drivers/nvme/target/tcp.c | |
| parent | 9912ade355902adb9dacbec640fac23c4e73019d (diff) | |
| download | linux-43cc66892e81bb05283159e489a19cec177e6f9d.tar.xz | |
nvmet-tcp: set SO_PRIORITY for accepted sockets
Enable ability to associate all sockets related to NVMf TCP traffic
to a priority group that will perform optimized network processing for
this traffic class. Maintain initial default behavior of using priority
of zero.
Signed-off-by: Kiran Patil <kiran.patil@intel.com>
Signed-off-by: Mark Wunderlich <mark.wunderlich@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Diffstat (limited to 'drivers/nvme/target/tcp.c')
| -rw-r--r-- | drivers/nvme/target/tcp.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/nvme/target/tcp.c b/drivers/nvme/target/tcp.c index af674fc0bb1e..cbff1038bdb3 100644 --- a/drivers/nvme/target/tcp.c +++ b/drivers/nvme/target/tcp.c @@ -19,6 +19,16 @@ #define NVMET_TCP_DEF_INLINE_DATA_SIZE (4 * PAGE_SIZE) +/* Define the socket priority to use for connections were it is desirable + * that the NIC consider performing optimized packet processing or filtering. + * A non-zero value being sufficient to indicate general consideration of any + * possible optimization. Making it a module param allows for alternative + * values that may be unique for some NIC implementations. + */ +static int so_priority; +module_param(so_priority, int, 0644); +MODULE_PARM_DESC(so_priority, "nvmet tcp socket optimize priority"); + #define NVMET_TCP_RECV_BUDGET 8 #define NVMET_TCP_SEND_BUDGET 8 #define NVMET_TCP_IO_WORK_BUDGET 64 @@ -1433,6 +1443,13 @@ static int nvmet_tcp_set_queue_sock(struct nvmet_tcp_queue *queue) if (ret) return ret; + if (so_priority > 0) { + ret = kernel_setsockopt(sock, SOL_SOCKET, SO_PRIORITY, + (char *)&so_priority, sizeof(so_priority)); + if (ret) + return ret; + } + /* Set socket type of service */ if (inet->rcv_tos > 0) { int tos = inet->rcv_tos; @@ -1622,6 +1639,15 @@ static int nvmet_tcp_add_port(struct nvmet_port *nport) goto err_sock; } + if (so_priority > 0) { + ret = kernel_setsockopt(port->sock, SOL_SOCKET, SO_PRIORITY, + (char *)&so_priority, sizeof(so_priority)); + if (ret) { + pr_err("failed to set SO_PRIORITY sock opt %d\n", ret); + goto err_sock; + } + } + ret = kernel_bind(port->sock, (struct sockaddr *)&port->addr, sizeof(port->addr)); if (ret) { |