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-rw-r--r--netlink/rings.c237
1 files changed, 237 insertions, 0 deletions
diff --git a/netlink/rings.c b/netlink/rings.c
new file mode 100644
index 0000000..f9eb67a
--- /dev/null
+++ b/netlink/rings.c
@@ -0,0 +1,237 @@
+/*
+ * rings.c - netlink implementation of ring commands
+ *
+ * Implementation of "ethtool -g <dev>" and "ethtool -G <dev> ..."
+ */
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "../internal.h"
+#include "../common.h"
+#include "netlink.h"
+#include "parser.h"
+
+/* RINGS_GET */
+
+int rings_reply_cb(const struct nlmsghdr *nlhdr, void *data)
+{
+ const struct nlattr *tb[ETHTOOL_A_RINGS_MAX + 1] = {};
+ DECLARE_ATTR_TB_INFO(tb);
+ struct nl_context *nlctx = data;
+ unsigned char tcp_hds;
+ char *tcp_hds_fmt;
+ char *tcp_hds_key;
+ char tcp_hds_buf[256];
+ bool silent;
+ int err_ret;
+ 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_RINGS_HEADER]);
+ if (!dev_ok(nlctx))
+ return err_ret;
+
+ open_json_object(NULL);
+
+ if (silent)
+ show_cr();
+ print_string(PRINT_ANY, "ifname", "Ring parameters for %s:\n",
+ nlctx->devname);
+ print_string(PRINT_FP, NULL, "Pre-set maximums:\n", NULL);
+ show_u32("rx-max", "RX:\t\t\t", tb[ETHTOOL_A_RINGS_RX_MAX]);
+ show_u32("rx-mini-max", "RX Mini:\t\t", tb[ETHTOOL_A_RINGS_RX_MINI_MAX]);
+ show_u32("rx-jumbo-max", "RX Jumbo:\t\t",
+ tb[ETHTOOL_A_RINGS_RX_JUMBO_MAX]);
+ show_u32("tx-max", "TX:\t\t\t", tb[ETHTOOL_A_RINGS_TX_MAX]);
+ show_u32("tx-push-buff-max-len", "TX push buff len:\t",
+ tb[ETHTOOL_A_RINGS_TX_PUSH_BUF_LEN_MAX]);
+ print_string(PRINT_FP, NULL, "Current hardware settings:\n", NULL);
+ show_u32("rx", "RX:\t\t\t", tb[ETHTOOL_A_RINGS_RX]);
+ show_u32("rx-mini", "RX Mini:\t\t", tb[ETHTOOL_A_RINGS_RX_MINI]);
+ show_u32("rx-jumbo", "RX Jumbo:\t\t", tb[ETHTOOL_A_RINGS_RX_JUMBO]);
+ show_u32("tx", "TX:\t\t\t", tb[ETHTOOL_A_RINGS_TX]);
+ show_u32("rx-buf-len", "RX Buf Len:\t\t", tb[ETHTOOL_A_RINGS_RX_BUF_LEN]);
+ show_u32("cqe-size", "CQE Size:\t\t", tb[ETHTOOL_A_RINGS_CQE_SIZE]);
+ show_bool("tx-push", "TX Push:\t\t%s\n", tb[ETHTOOL_A_RINGS_TX_PUSH]);
+ show_bool("rx-push", "RX Push:\t\t%s\n", tb[ETHTOOL_A_RINGS_RX_PUSH]);
+ show_u32("tx-push-buf-len", "TX push buff len:\t",
+ tb[ETHTOOL_A_RINGS_TX_PUSH_BUF_LEN]);
+
+ tcp_hds_fmt = "TCP data split:\t\t%s\n";
+ tcp_hds_key = "tcp-data-split";
+ tcp_hds = tb[ETHTOOL_A_RINGS_TCP_DATA_SPLIT] ?
+ mnl_attr_get_u8(tb[ETHTOOL_A_RINGS_TCP_DATA_SPLIT]) : 0;
+ switch (tcp_hds) {
+ case ETHTOOL_TCP_DATA_SPLIT_UNKNOWN:
+ print_string(PRINT_FP, tcp_hds_key, tcp_hds_fmt, "n/a");
+ break;
+ case ETHTOOL_TCP_DATA_SPLIT_DISABLED:
+ print_string(PRINT_ANY, tcp_hds_key, tcp_hds_fmt, "off");
+ break;
+ case ETHTOOL_TCP_DATA_SPLIT_ENABLED:
+ print_string(PRINT_ANY, tcp_hds_key, tcp_hds_fmt, "on");
+ break;
+ default:
+ snprintf(tcp_hds_buf, sizeof(tcp_hds_buf),
+ "unknown(%d)\n", tcp_hds);
+ print_string(PRINT_ANY, tcp_hds_key, tcp_hds_fmt, tcp_hds_buf);
+ break;
+ }
+
+ close_json_object();
+
+ return MNL_CB_OK;
+}
+
+int nl_gring(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_RINGS_GET, 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_RINGS_GET,
+ ETHTOOL_A_RINGS_HEADER, 0);
+ if (ret < 0)
+ return ret;
+
+ new_json_obj(ctx->json);
+ ret = nlsock_send_get_request(nlsk, rings_reply_cb);
+ delete_json_obj();
+ return ret;
+}
+
+/* RINGS_SET */
+
+static const struct lookup_entry_u8 tcp_data_split_values[] = {
+ {
+ .arg = "auto",
+ .val = ETHTOOL_TCP_DATA_SPLIT_UNKNOWN,
+ },
+ {
+ .arg = "off",
+ .val = ETHTOOL_TCP_DATA_SPLIT_DISABLED,
+ },
+ {
+ .arg = "on",
+ .val = ETHTOOL_TCP_DATA_SPLIT_ENABLED,
+ },
+ {}
+};
+
+static const struct param_parser sring_params[] = {
+ {
+ .arg = "rx",
+ .type = ETHTOOL_A_RINGS_RX,
+ .handler = nl_parse_direct_u32,
+ .min_argc = 1,
+ },
+ {
+ .arg = "rx-mini",
+ .type = ETHTOOL_A_RINGS_RX_MINI,
+ .handler = nl_parse_direct_u32,
+ .min_argc = 1,
+ },
+ {
+ .arg = "rx-jumbo",
+ .type = ETHTOOL_A_RINGS_RX_JUMBO,
+ .handler = nl_parse_direct_u32,
+ .min_argc = 1,
+ },
+ {
+ .arg = "tx",
+ .type = ETHTOOL_A_RINGS_TX,
+ .handler = nl_parse_direct_u32,
+ .min_argc = 1,
+ },
+ {
+ .arg = "tx-push-buf-len",
+ .type = ETHTOOL_A_RINGS_TX_PUSH_BUF_LEN,
+ .handler = nl_parse_direct_u32,
+ .min_argc = 1,
+ },
+ {
+ .arg = "rx-buf-len",
+ .type = ETHTOOL_A_RINGS_RX_BUF_LEN,
+ .handler = nl_parse_direct_u32,
+ .min_argc = 1,
+ },
+ {
+ .arg = "tcp-data-split",
+ .type = ETHTOOL_A_RINGS_TCP_DATA_SPLIT,
+ .handler = nl_parse_lookup_u8,
+ .handler_data = tcp_data_split_values,
+ .min_argc = 1,
+ },
+ {
+ .arg = "cqe-size",
+ .type = ETHTOOL_A_RINGS_CQE_SIZE,
+ .handler = nl_parse_direct_u32,
+ .min_argc = 1,
+ },
+ {
+ .arg = "tx-push",
+ .type = ETHTOOL_A_RINGS_TX_PUSH,
+ .handler = nl_parse_u8bool,
+ .min_argc = 1,
+ },
+ {
+ .arg = "rx-push",
+ .type = ETHTOOL_A_RINGS_RX_PUSH,
+ .handler = nl_parse_u8bool,
+ .min_argc = 1,
+ },
+ {}
+};
+
+int nl_sring(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_RINGS_SET, false))
+ return -EOPNOTSUPP;
+
+ nlctx->cmd = "-G";
+ 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_RINGS_SET,
+ NLM_F_REQUEST | NLM_F_ACK);
+ if (ret < 0)
+ return 2;
+ if (ethnla_fill_header(msgbuff, ETHTOOL_A_RINGS_HEADER,
+ ctx->devname, 0))
+ return -EMSGSIZE;
+
+ ret = nl_parser(nlctx, sring_params, NULL, PARSER_GROUP_NONE, NULL);
+ if (ret < 0)
+ return 1;
+
+ ret = nlsock_sendmsg(nlsk, NULL);
+ if (ret < 0)
+ return 81;
+ ret = nlsock_process_reply(nlsk, nomsg_reply_cb, nlctx);
+ if (ret == 0)
+ return 0;
+ else
+ return nlctx->exit_code ?: 81;
+}