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-rw-r--r--rdma/sys.c144
1 files changed, 144 insertions, 0 deletions
diff --git a/rdma/sys.c b/rdma/sys.c
new file mode 100644
index 0000000..fd785b2
--- /dev/null
+++ b/rdma/sys.c
@@ -0,0 +1,144 @@
+// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
+/*
+ * sys.c RDMA tool
+ */
+
+#include "rdma.h"
+
+static int sys_help(struct rd *rd)
+{
+ pr_out("Usage: %s system show [ netns ]\n", rd->filename);
+ pr_out(" %s system set netns { shared | exclusive }\n", rd->filename);
+ return 0;
+}
+
+static const char *netns_modes_str[] = {
+ "exclusive",
+ "shared",
+};
+
+static int sys_show_parse_cb(const struct nlmsghdr *nlh, void *data)
+{
+ struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
+ bool cof = false;
+
+ mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
+
+ if (tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE]) {
+ const char *mode_str;
+ uint8_t netns_mode;
+
+ netns_mode =
+ mnl_attr_get_u8(tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE]);
+
+ if (netns_mode < ARRAY_SIZE(netns_modes_str))
+ mode_str = netns_modes_str[netns_mode];
+ else
+ mode_str = "unknown";
+
+ print_color_string(PRINT_ANY, COLOR_NONE, "netns", "netns %s ",
+ mode_str);
+ }
+
+ if (tb[RDMA_NLDEV_SYS_ATTR_COPY_ON_FORK])
+ cof = mnl_attr_get_u8(tb[RDMA_NLDEV_SYS_ATTR_COPY_ON_FORK]);
+
+ print_color_on_off(PRINT_ANY, COLOR_NONE, "copy-on-fork",
+ "copy-on-fork %s\n",
+ cof);
+
+ return MNL_CB_OK;
+}
+
+static int sys_show_no_args(struct rd *rd)
+{
+ uint32_t seq;
+ int ret;
+
+ rd_prepare_msg(rd, RDMA_NLDEV_CMD_SYS_GET,
+ &seq, (NLM_F_REQUEST | NLM_F_ACK));
+ ret = rd_send_msg(rd);
+ if (ret)
+ return ret;
+
+ return rd_recv_msg(rd, sys_show_parse_cb, rd, seq);
+}
+
+static int sys_show(struct rd *rd)
+{
+ const struct rd_cmd cmds[] = {
+ { NULL, sys_show_no_args},
+ { "netns", sys_show_no_args},
+ { 0 }
+ };
+
+ return rd_exec_cmd(rd, cmds, "parameter");
+}
+
+static int sys_set_netns_cmd(struct rd *rd, bool enable)
+{
+ uint32_t seq;
+
+ rd_prepare_msg(rd, RDMA_NLDEV_CMD_SYS_SET,
+ &seq, (NLM_F_REQUEST | NLM_F_ACK));
+ mnl_attr_put_u8(rd->nlh, RDMA_NLDEV_SYS_ATTR_NETNS_MODE, enable);
+
+ return rd_sendrecv_msg(rd, seq);
+}
+
+static bool sys_valid_netns_cmd(const char *cmd)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(netns_modes_str); i++) {
+ if (!strcmp(cmd, netns_modes_str[i]))
+ return true;
+ }
+ return false;
+}
+
+static int sys_set_netns_args(struct rd *rd)
+{
+ bool cmd;
+
+ if (rd_no_arg(rd) || !sys_valid_netns_cmd(rd_argv(rd))) {
+ pr_err("valid options are: { shared | exclusive }\n");
+ return -EINVAL;
+ }
+
+ cmd = (strcmp(rd_argv(rd), "shared") == 0) ? true : false;
+
+ return sys_set_netns_cmd(rd, cmd);
+}
+
+static int sys_set_help(struct rd *rd)
+{
+ pr_out("Usage: %s system set [PARAM] value\n", rd->filename);
+ pr_out(" system set netns { shared | exclusive }\n");
+ return 0;
+}
+
+static int sys_set(struct rd *rd)
+{
+ const struct rd_cmd cmds[] = {
+ { NULL, sys_set_help },
+ { "help", sys_set_help },
+ { "netns", sys_set_netns_args},
+ { 0 }
+ };
+
+ return rd_exec_cmd(rd, cmds, "parameter");
+}
+
+int cmd_sys(struct rd *rd)
+{
+ const struct rd_cmd cmds[] = {
+ { NULL, sys_show },
+ { "show", sys_show },
+ { "set", sys_set },
+ { "help", sys_help },
+ { 0 }
+ };
+
+ return rd_exec_cmd(rd, cmds, "system command");
+}