From: Srikanth Kaka <srikanth.k@oneconvergence.com>
To: sthemmin@microsoft.com, longli@microsoft.com
Cc: dev@dpdk.org, vag.singh@oneconvergence.com, avelu@juniper.net,
Srikanth Kaka <srikanth.k@oneconvergence.com>
Subject: [PATCH v3 10/15] bus/vmbus: get subchannel info
Date: Thu, 17 Feb 2022 21:36:08 +0530 [thread overview]
Message-ID: <20220217160613.70161-11-srikanth.k@oneconvergence.com> (raw)
In-Reply-To: <20220217160613.70161-1-srikanth.k@oneconvergence.com>
Using sysctl, all the subchannel information is fetched
Signed-off-by: Srikanth Kaka <srikanth.k@oneconvergence.com>
Signed-off-by: Vag Singh <vag.singh@oneconvergence.com>
Signed-off-by: Anand Thulasiram <avelu@juniper.net>
---
drivers/bus/vmbus/freebsd/vmbus_uio.c | 85 +++++++++++++++++++++++++++
1 file changed, 85 insertions(+)
diff --git a/drivers/bus/vmbus/freebsd/vmbus_uio.c b/drivers/bus/vmbus/freebsd/vmbus_uio.c
index affc0a3f4f..ca6f5fac59 100644
--- a/drivers/bus/vmbus/freebsd/vmbus_uio.c
+++ b/drivers/bus/vmbus/freebsd/vmbus_uio.c
@@ -308,6 +308,91 @@ bool vmbus_uio_subchannels_supported(const struct rte_vmbus_device *dev,
return true;
}
+static bool vmbus_isnew_subchannel(struct vmbus_channel *primary,
+ uint16_t id)
+{
+ const struct vmbus_channel *c;
+
+ STAILQ_FOREACH(c, &primary->subchannel_list, next) {
+ if (c->relid == id)
+ return false;
+ }
+ return true;
+}
+
+int vmbus_uio_get_subchan(struct vmbus_channel *primary,
+ struct vmbus_channel **subchan)
+{
+ const struct rte_vmbus_device *dev = primary->device;
+ char sysctlBuffer[PATH_MAX], sysctlVar[PATH_MAX];
+ size_t len = PATH_MAX, sysctl_len;
+ /* nr_schan, relid, subid & monid datatype must match kernel's for sysctl */
+ uint32_t relid, subid, nr_schan, i;
+ uint8_t monid;
+ int err;
+
+ /* get no. of sub-channels opened by hv_uio
+ * dev.hv_uio.0.subchan_cnt
+ */
+ snprintf(sysctlVar, len, "dev.%s.%d.subchan_cnt", driver_name,
+ dev->uio_num);
+ sysctl_len = sizeof(nr_schan);
+ if (sysctlbyname(sysctlVar, &nr_schan, &sysctl_len, NULL, 0) < 0) {
+ VMBUS_LOG(ERR, "could not read %s : %s", sysctlVar,
+ strerror(errno));
+ return -1;
+ }
+
+ /* dev.hv_uio.0.channel.14.sub */
+ snprintf(sysctlBuffer, len, "dev.%s.%d.channel.%u.sub", driver_name,
+ dev->uio_num, primary->relid);
+ for (i = 1; i <= nr_schan; i++) {
+ /* get relid */
+ snprintf(sysctlVar, len, "%s.%u.chanid", sysctlBuffer, i);
+ sysctl_len = sizeof(relid);
+ if (sysctlbyname(sysctlVar, &relid, &sysctl_len, NULL, 0) < 0) {
+ VMBUS_LOG(ERR, "could not read %s : %s", sysctlVar,
+ strerror(errno));
+ goto error;
+ }
+
+ if (!vmbus_isnew_subchannel(primary, (uint16_t)relid)) {
+ VMBUS_LOG(DEBUG, "skip already found channel: %u",
+ relid);
+ continue;
+ }
+
+ /* get sub-channel id */
+ snprintf(sysctlVar, len, "%s.%u.ch_subidx", sysctlBuffer, i);
+ sysctl_len = sizeof(subid);
+ if (sysctlbyname(sysctlVar, &subid, &sysctl_len, NULL, 0) < 0) {
+ VMBUS_LOG(ERR, "could not read %s : %s", sysctlVar,
+ strerror(errno));
+ goto error;
+ }
+
+ /* get monitor id */
+ snprintf(sysctlVar, len, "%s.%u.monitor_id", sysctlBuffer, i);
+ sysctl_len = sizeof(monid);
+ if (sysctlbyname(sysctlVar, &monid, &sysctl_len, NULL, 0) < 0) {
+ VMBUS_LOG(ERR, "could not read %s : %s", sysctlVar,
+ strerror(errno));
+ goto error;
+ }
+
+ err = vmbus_chan_create(dev, (uint16_t)relid, (uint16_t)subid,
+ monid, subchan);
+ if (err) {
+ VMBUS_LOG(ERR, "subchannel setup failed");
+ return err;
+ }
+ break;
+ }
+ return 0;
+error:
+ return -1;
+}
+
int vmbus_uio_subchan_open(struct rte_vmbus_device *dev, uint32_t subchan)
{
struct mapped_vmbus_resource *uio_res;
--
2.30.2
next prev parent reply other threads:[~2022-02-17 16:12 UTC|newest]
Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-27 13:42 [dpdk-dev] [PATCH 00/11] add FreeBSD support to VMBUS & NetVSC PMDs Srikanth Kaka
2021-09-27 13:42 ` [dpdk-dev] [PATCH 01/11] bus/vmbus: stub for FreeBSD support Srikanth Kaka
2021-11-06 20:44 ` Long Li
2021-09-27 13:42 ` [dpdk-dev] [PATCH 02/11] bus/vmbus: scan and get the network device Srikanth Kaka
2021-10-08 11:39 ` [dpdk-dev] [PATCH v2 " Srikanth Kaka
2021-09-27 13:42 ` [dpdk-dev] [PATCH 03/11] bus/vmbus: handle mapping of device resources Srikanth Kaka
2021-09-27 13:42 ` [dpdk-dev] [PATCH 04/11] bus/vmbus: get device resource values using sysctl Srikanth Kaka
2021-09-27 13:42 ` [dpdk-dev] [PATCH 05/11] bus/vmbus: open subchannels Srikanth Kaka
2021-09-30 23:17 ` Long Li
2021-10-08 11:41 ` [dpdk-dev] [PATCH v2 " Srikanth Kaka
2021-11-06 20:49 ` Long Li
2022-02-08 16:35 ` Thomas Monjalon
2021-09-27 13:42 ` [dpdk-dev] [PATCH 06/11] net/netvsc: request HV_UIO to open sub-channels Srikanth Kaka
2021-09-30 23:19 ` Long Li
2021-10-01 5:31 ` Srikanth K
2021-09-27 13:42 ` [dpdk-dev] [PATCH 07/11] bus/vmbus: map the subchannel resources Srikanth Kaka
2021-09-27 13:42 ` [dpdk-dev] [PATCH 08/11] net/netvsc: moving event monitoring support Srikanth Kaka
2021-11-06 20:51 ` Long Li
2021-09-27 13:42 ` [dpdk-dev] [PATCH 09/11] net/netvsc: moving hotplug retry to OS dir Srikanth Kaka
2021-11-06 20:54 ` Long Li
2021-09-27 13:42 ` [dpdk-dev] [PATCH 10/11] bus/vmbus: add meson support for FreeBSD OS Srikanth Kaka
2021-11-06 20:54 ` Long Li
2021-09-27 13:42 ` [dpdk-dev] [PATCH 11/11] net/netvsc: add meson support for FreeBSD Srikanth Kaka
2021-10-08 11:42 ` [dpdk-dev] [PATCH v2 " Srikanth Kaka
2021-11-06 20:50 ` Long Li
2021-09-30 23:25 ` [dpdk-dev] [PATCH 00/11] add FreeBSD support to VMBUS & NetVSC PMDs Long Li
2022-02-17 16:05 ` [PATCH v3 00/15] " Srikanth Kaka
2022-02-17 16:05 ` [PATCH v3 01/15] bus/vmbus: scan and get the network device Srikanth Kaka
2022-02-17 16:29 ` Stephen Hemminger
2022-02-17 16:06 ` [PATCH v3 02/15] bus/vmbus: handle mapping of device resources Srikanth Kaka
2022-02-17 16:06 ` [PATCH v3 03/15] bus/vmbus: get device resource values using sysctl Srikanth Kaka
2022-02-17 16:06 ` [PATCH v3 04/15] bus/vmbus: add resource by index Srikanth Kaka
2022-02-17 16:06 ` [PATCH v3 05/15] net/netvsc: make event monitor OS dependent Srikanth Kaka
2022-02-17 16:06 ` [PATCH v3 06/15] bus/vmbus: add ring mapping APIs Srikanth Kaka
2022-02-17 16:06 ` [PATCH v3 07/15] bus/vmbus: add stub for subchannel support API Srikanth Kaka
2022-02-17 16:06 ` [PATCH v3 08/15] bus/vmbus: open subchannels Srikanth Kaka
2022-02-17 16:06 ` [PATCH v3 09/15] net/netvsc: make IOCTL call to " Srikanth Kaka
2022-02-17 16:06 ` Srikanth Kaka [this message]
2022-02-17 16:06 ` [PATCH v3 11/15] net/netvsc: moving hotplug retry to OS dir Srikanth Kaka
2022-02-17 16:06 ` [PATCH v3 12/15] bus/vmbus: add meson support for FreeBSD Srikanth Kaka
2022-02-17 16:06 ` [PATCH v3 13/15] net/netvsc: " Srikanth Kaka
2022-02-17 16:06 ` [PATCH v3 14/15] bus/vmbus: add APIs to mask/unmask IRQs Srikanth Kaka
2022-02-17 16:06 ` [PATCH v3 15/15] bus/vmbus: update MAINTAINERS and docs Srikanth Kaka
2022-04-18 4:29 ` [PATCH v4 00/14] add FreeBSD support to VMBUS & NetVSC PMDs Srikanth Kaka
2022-04-18 4:29 ` [PATCH v4 01/14] bus/vmbus: move independent code from Linux Srikanth Kaka
2022-04-19 14:49 ` Stephen Hemminger
2022-04-19 14:52 ` Srikanth K
2022-04-18 4:29 ` [PATCH v4 02/14] bus/vmbus: move independent bus functions Srikanth Kaka
2022-04-18 4:29 ` [PATCH v4 03/14] bus/vmbus: move OS independent UIO functions Srikanth Kaka
2022-04-18 4:29 ` [PATCH v4 04/14] bus/vmbus: scan and get the network device on FreeBSD Srikanth Kaka
2022-04-18 4:29 ` [PATCH v4 05/14] bus/vmbus: handle mapping of device resources Srikanth Kaka
2022-04-18 4:29 ` [PATCH v4 06/14] bus/vmbus: get device resource values using sysctl Srikanth Kaka
2022-04-18 4:29 ` [PATCH v4 07/14] net/netvsc: make event monitor OS dependent Srikanth Kaka
2022-04-18 4:29 ` [PATCH v4 08/14] bus/vmbus: add sub-channel mapping support Srikanth Kaka
2022-04-18 4:29 ` [PATCH v4 09/14] bus/vmbus: open subchannels Srikanth Kaka
2022-04-19 15:00 ` Stephen Hemminger
2022-04-18 4:29 ` [PATCH v4 10/14] net/netvsc: make IOCTL call to " Srikanth Kaka
2022-04-18 4:29 ` [PATCH v4 11/14] bus/vmbus: get subchannel info Srikanth Kaka
2022-04-19 14:51 ` Stephen Hemminger
2022-04-18 4:29 ` [PATCH v4 12/14] net/netvsc: moving hotplug retry to OS dir Srikanth Kaka
2022-04-18 4:29 ` [PATCH v4 13/14] bus/vmbus: add meson support for FreeBSD Srikanth Kaka
2022-04-18 4:29 ` [PATCH v4 14/14] bus/vmbus: update MAINTAINERS and docs Srikanth Kaka
2022-04-23 4:28 ` [PATCH v5 00/14] add FreeBSD support to VMBUS & NetVSC PMDs Srikanth Kaka
2022-04-23 4:28 ` [PATCH v5 01/14] bus/vmbus: move independent code from Linux Srikanth Kaka
2022-04-23 4:28 ` [PATCH v5 02/14] bus/vmbus: move independent bus functions Srikanth Kaka
2022-04-23 4:28 ` [PATCH v5 03/14] bus/vmbus: move OS independent UIO functions Srikanth Kaka
2022-04-23 4:28 ` [PATCH v5 04/14] bus/vmbus: scan and get the network device on FreeBSD Srikanth Kaka
2022-04-23 4:28 ` [PATCH v5 05/14] bus/vmbus: handle mapping of device resources Srikanth Kaka
2022-04-23 4:28 ` [PATCH v5 06/14] bus/vmbus: get device resource values using sysctl Srikanth Kaka
2022-04-23 4:28 ` [PATCH v5 07/14] net/netvsc: make event monitor OS dependent Srikanth Kaka
2022-04-23 4:28 ` [PATCH v5 08/14] bus/vmbus: add sub-channel mapping support Srikanth Kaka
2022-04-23 4:28 ` [PATCH v5 09/14] bus/vmbus: open subchannels Srikanth Kaka
2023-08-10 15:41 ` Stephen Hemminger
2022-04-23 4:28 ` [PATCH v5 10/14] net/netvsc: make IOCTL call to " Srikanth Kaka
2022-04-23 4:28 ` [PATCH v5 11/14] bus/vmbus: get subchannel info Srikanth Kaka
2022-04-23 4:28 ` [PATCH v5 12/14] net/netvsc: moving hotplug retry to OS dir Srikanth Kaka
2022-04-23 4:28 ` [PATCH v5 13/14] bus/vmbus: add meson support for FreeBSD Srikanth Kaka
2022-04-23 4:28 ` [PATCH v5 14/14] bus/vmbus: update MAINTAINERS and docs Srikanth Kaka
2023-08-10 15:44 ` Stephen Hemminger
2022-05-18 8:18 ` [PATCH v5 00/14] add FreeBSD support to VMBUS & NetVSC PMDs Thomas Monjalon
2022-10-06 14:58 ` Thomas Monjalon
2023-07-04 0:07 ` Stephen Hemminger
2022-04-14 8:54 ` [PATCH v3 00/15] " Thomas Monjalon
2022-04-14 9:01 ` Srikanth K
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