blob: d50bbac4770127ad39e9c4cb5c5136bfce7bbde7 [file] [log] [blame]
/*
* 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;
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;
if (silent)
putchar('\n');
printf("Ring parameters for %s:\n", nlctx->devname);
printf("Pre-set maximums:\n");
show_u32(tb[ETHTOOL_A_RINGS_RX_MAX], "RX:\t\t");
show_u32(tb[ETHTOOL_A_RINGS_RX_MINI_MAX], "RX Mini:\t");
show_u32(tb[ETHTOOL_A_RINGS_RX_JUMBO_MAX], "RX Jumbo:\t");
show_u32(tb[ETHTOOL_A_RINGS_TX_MAX], "TX:\t\t");
printf("Current hardware settings:\n");
show_u32(tb[ETHTOOL_A_RINGS_RX], "RX:\t\t");
show_u32(tb[ETHTOOL_A_RINGS_RX_MINI], "RX Mini:\t");
show_u32(tb[ETHTOOL_A_RINGS_RX_JUMBO], "RX Jumbo:\t");
show_u32(tb[ETHTOOL_A_RINGS_TX], "TX:\t\t");
show_u32(tb[ETHTOOL_A_RINGS_RX_BUF_LEN], "RX Buf Len:\t\t");
show_u32(tb[ETHTOOL_A_RINGS_CQE_SIZE], "CQE Size:\t\t");
show_bool("tx-push", "TX Push:\t%s\n", tb[ETHTOOL_A_RINGS_TX_PUSH]);
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;
return nlsock_send_get_request(nlsk, rings_reply_cb);
}
/* RINGS_SET */
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 = "rx-buf-len",
.type = ETHTOOL_A_RINGS_RX_BUF_LEN,
.handler = nl_parse_direct_u32,
.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,
},
{}
};
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;
}