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-rw-r--r--netlink/plca.c296
1 files changed, 296 insertions, 0 deletions
diff --git a/netlink/plca.c b/netlink/plca.c
new file mode 100644
index 0000000..7d61e3b
--- /dev/null
+++ b/netlink/plca.c
@@ -0,0 +1,296 @@
+/*
+ * plca.c - netlink implementation of plca command
+ *
+ * Implementation of "ethtool --show-plca <dev>" and
+ * "ethtool --set-plca <dev> ..."
+ */
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "../internal.h"
+#include "../common.h"
+#include "netlink.h"
+#include "bitset.h"
+#include "parser.h"
+
+/* PLCA_GET_CFG */
+
+int plca_get_cfg_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+ const struct nlattr *tb[ETHTOOL_A_PLCA_MAX + 1] = {};
+ DECLARE_ATTR_TB_INFO(tb);
+ struct nl_context *nlctx = data;
+ bool silent;
+ int idv = 255;
+ int err_ret;
+ int val;
+ int ret;
+
+ silent = nlctx->is_dump || nlctx->is_monitor;
+ err_ret = silent ? MNL_CB_OK : MNL_CB_ERROR;
+ ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+ if (ret < 0)
+ return err_ret;
+
+ nlctx->devname = get_dev_name(tb[ETHTOOL_A_PLCA_HEADER]);
+ if (!dev_ok(nlctx))
+ return err_ret;
+
+ if (silent)
+ putchar('\n');
+
+ printf("PLCA settings for %s:\n", nlctx->devname);
+
+ // check if PLCA is enabled
+ printf("\tEnabled: ");
+
+ if (!tb[ETHTOOL_A_PLCA_ENABLED]) {
+ printf("not supported");
+ } else {
+ val = mnl_attr_get_u8(tb[ETHTOOL_A_PLCA_ENABLED]);
+ printf(val ? "Yes" : "No");
+ }
+ putchar('\n');
+
+ // get node ID
+ printf("\tlocal node ID: ");
+
+ if (!tb[ETHTOOL_A_PLCA_NODE_ID]) {
+ printf("not supported");
+ } else {
+ idv = mnl_attr_get_u32(tb[ETHTOOL_A_PLCA_NODE_ID]);
+ printf("%u (%s)", idv,
+ idv == 0 ? "coordinator" :
+ idv == 255 ? "unconfigured" : "follower");
+ }
+ putchar('\n');
+
+ // get node count
+ printf("\tNode count: ");
+ if (!tb[ETHTOOL_A_PLCA_NODE_CNT]) {
+ printf("not supported");
+ } else {
+ val = mnl_attr_get_u32(tb[ETHTOOL_A_PLCA_NODE_CNT]);
+ printf("%u", val);
+
+ // The node count is ignored by follower nodes. However, it can
+ // be pre-set to enable fast coordinator role switchover.
+ // Therefore, on a follower node we still wanto to show it,
+ // indicating it is not currently used.
+ if (tb[ETHTOOL_A_PLCA_NODE_ID] && idv != 0)
+ printf(" (ignored)");
+ }
+ putchar('\n');
+
+ // get TO timer (transmit opportunity timer)
+ printf("\tTO timer: ");
+ if (!tb[ETHTOOL_A_PLCA_TO_TMR]) {
+ printf("not supported");
+ } else {
+ val = mnl_attr_get_u32(tb[ETHTOOL_A_PLCA_TO_TMR]);
+ printf("%u BT", val);
+ }
+ putchar('\n');
+
+ // get burst count
+ printf("\tBurst count: ");
+ if (!tb[ETHTOOL_A_PLCA_BURST_CNT]) {
+ printf("not supported");
+ } else {
+ val = mnl_attr_get_u32(tb[ETHTOOL_A_PLCA_BURST_CNT]);
+ printf("%u (%s)", val,
+ val > 0 ? "enabled" : "disabled");
+ }
+ putchar('\n');
+
+ // get burst timer
+ printf("\tBurst timer: ");
+ if (!tb[ETHTOOL_A_PLCA_BURST_TMR]) {
+ printf("not supported");
+ } else {
+ val = mnl_attr_get_u32(tb[ETHTOOL_A_PLCA_BURST_TMR]);
+ printf("%u BT", val);
+ }
+ putchar('\n');
+
+ return MNL_CB_OK;
+}
+
+
+int nl_plca_get_cfg(struct cmd_context *ctx)
+{
+ struct nl_context *nlctx = ctx->nlctx;
+ struct nl_socket *nlsk = nlctx->ethnl_socket;
+ int ret;
+
+ if (netlink_cmd_check(ctx, ETHTOOL_MSG_PLCA_GET_CFG, true))
+ return -EOPNOTSUPP;
+
+ if (ctx->argc > 0) {
+ fprintf(stderr, "ethtool: unexpected parameter '%s'\n",
+ *ctx->argp);
+ return 1;
+ }
+
+ ret = nlsock_prep_get_request(nlsk, ETHTOOL_MSG_PLCA_GET_CFG,
+ ETHTOOL_A_PLCA_HEADER, 0);
+
+ if (ret < 0)
+ return ret;
+
+ return nlsock_send_get_request(nlsk, plca_get_cfg_reply_cb);
+}
+
+/* PLCA_SET_CFG */
+
+static const struct param_parser set_plca_params[] = {
+ {
+ .arg = "enable",
+ .type = ETHTOOL_A_PLCA_ENABLED,
+ .handler = nl_parse_u8bool,
+ .min_argc = 1,
+ },
+ {
+ .arg = "node-id",
+ .type = ETHTOOL_A_PLCA_NODE_ID,
+ .handler = nl_parse_direct_u32,
+ .min_argc = 1,
+ },
+ {
+ .arg = "node-cnt",
+ .type = ETHTOOL_A_PLCA_NODE_CNT,
+ .handler = nl_parse_direct_u32,
+ .min_argc = 1,
+ },
+ {
+ .arg = "to-tmr",
+ .type = ETHTOOL_A_PLCA_TO_TMR,
+ .handler = nl_parse_direct_u32,
+ .min_argc = 1,
+ },
+ {
+ .arg = "burst-cnt",
+ .type = ETHTOOL_A_PLCA_BURST_CNT,
+ .handler = nl_parse_direct_u32,
+ .min_argc = 1,
+ },
+ {
+ .arg = "burst-tmr",
+ .type = ETHTOOL_A_PLCA_BURST_TMR,
+ .handler = nl_parse_direct_u32,
+ .min_argc = 1,
+ },
+ {}
+};
+
+int nl_plca_set_cfg(struct cmd_context *ctx)
+{
+ struct nl_context *nlctx = ctx->nlctx;
+ struct nl_msg_buff *msgbuff;
+ struct nl_socket *nlsk;
+ int ret;
+
+ if (netlink_cmd_check(ctx, ETHTOOL_MSG_PLCA_SET_CFG, false))
+ return -EOPNOTSUPP;
+ if (!ctx->argc) {
+ fprintf(stderr,
+ "ethtool (--set-plca-cfg): parameters missing\n");
+ return 1;
+ }
+
+ nlctx->cmd = "--set-plca-cfg";
+ nlctx->argp = ctx->argp;
+ nlctx->argc = ctx->argc;
+ nlctx->devname = ctx->devname;
+ nlsk = nlctx->ethnl_socket;
+ msgbuff = &nlsk->msgbuff;
+
+ ret = msg_init(nlctx, msgbuff, ETHTOOL_MSG_PLCA_SET_CFG,
+ NLM_F_REQUEST | NLM_F_ACK);
+ if (ret < 0)
+ return 2;
+ if (ethnla_fill_header(msgbuff, ETHTOOL_A_PLCA_HEADER,
+ ctx->devname, 0))
+ return -EMSGSIZE;
+
+ ret = nl_parser(nlctx, set_plca_params, NULL, PARSER_GROUP_NONE, NULL);
+ if (ret < 0)
+ return 1;
+
+ ret = nlsock_sendmsg(nlsk, NULL);
+ if (ret < 0)
+ return 76;
+ ret = nlsock_process_reply(nlsk, nomsg_reply_cb, nlctx);
+ if (ret == 0)
+ return 0;
+ else
+ return nlctx->exit_code ?: 76;
+}
+
+/* PLCA_GET_STATUS */
+
+int plca_get_status_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+ const struct nlattr *tb[ETHTOOL_A_PLCA_MAX + 1] = {};
+ DECLARE_ATTR_TB_INFO(tb);
+ struct nl_context *nlctx = data;
+ bool silent;
+ int err_ret;
+ int ret;
+ u8 val;
+
+ silent = nlctx->is_dump || nlctx->is_monitor;
+ err_ret = silent ? MNL_CB_OK : MNL_CB_ERROR;
+ ret = mnl_attr_parse(nlhdr, GENL_HDRLEN, attr_cb, &tb_info);
+ if (ret < 0)
+ return err_ret;
+
+ nlctx->devname = get_dev_name(tb[ETHTOOL_A_PLCA_HEADER]);
+ if (!dev_ok(nlctx))
+ return err_ret;
+
+ if (silent)
+ putchar('\n');
+
+ printf("PLCA status of %s:\n", nlctx->devname);
+
+ // check whether the Open Alliance TC14 standard memory map is supported
+ printf("\tStatus: ");
+
+ if (!tb[ETHTOOL_A_PLCA_STATUS]) {
+ printf("not supported");
+ } else {
+ val = mnl_attr_get_u8(tb[ETHTOOL_A_PLCA_STATUS]);
+ printf(val ? "on" : "off");
+ }
+ putchar('\n');
+
+ return MNL_CB_OK;
+}
+
+
+int nl_plca_get_status(struct cmd_context *ctx)
+{
+ struct nl_context *nlctx = ctx->nlctx;
+ struct nl_socket *nlsk = nlctx->ethnl_socket;
+ int ret;
+
+ if (netlink_cmd_check(ctx, ETHTOOL_MSG_PLCA_GET_STATUS, true))
+ return -EOPNOTSUPP;
+
+ if (ctx->argc > 0) {
+ fprintf(stderr, "ethtool: unexpected parameter '%s'\n",
+ *ctx->argp);
+ return 1;
+ }
+
+ ret = nlsock_prep_get_request(nlsk, ETHTOOL_MSG_PLCA_GET_STATUS,
+ ETHTOOL_A_PLCA_HEADER, 0);
+
+ if (ret < 0)
+ return ret;
+
+ return nlsock_send_get_request(nlsk, plca_get_status_reply_cb);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-28 05:02:54 +0000