diff options
Diffstat (limited to 'netlink/rings.c')
| -rw-r--r-- | netlink/rings.c | 237 |
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; +} |