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linux
tools: ynl: add sample for ethtool
Configuring / reading ring sizes and counts is a fairly common
operation for ethtool netlink. Present a sample doing that with
YNL:
$ ./ethtool
Channels:
enp1s0: combined 1
eni1np1: combined 1
eni2np1: combined 1
Rings:
enp1s0: rx 256 tx 256
eni1np1: rx 0 tx 0
eni2np1: rx 0 tx 0
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
authored by
Jakub Kicinski
and committed by
David S. Miller
f561ff23
2d7be507
+66
+65
tools/net/ynl/samples/ethtool.c
+65
tools/net/ynl/samples/ethtool.c
···
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// SPDX-License-Identifier: GPL-2.0
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#include <stdio.h>
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#include <string.h>
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#include <ynl.h>
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#include <net/if.h>
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#include "ethtool-user.h"
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int main(int argc, char **argv)
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{
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struct ethtool_channels_get_req_dump creq = {};
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struct ethtool_rings_get_req_dump rreq = {};
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struct ethtool_channels_get_list *channels;
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struct ethtool_rings_get_list *rings;
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struct ynl_sock *ys;
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ys = ynl_sock_create(&ynl_ethtool_family, NULL);
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if (!ys)
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return 1;
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creq._present.header = 1; /* ethtool needs an empty nest, sigh */
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channels = ethtool_channels_get_dump(ys, &creq);
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if (!channels)
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goto err_close;
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printf("Channels:\n");
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ynl_dump_foreach(channels, dev) {
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printf(" %8s: ", dev->header.dev_name);
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if (dev->_present.rx_count)
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printf("rx %d ", dev->rx_count);
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if (dev->_present.tx_count)
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printf("tx %d ", dev->tx_count);
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if (dev->_present.combined_count)
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printf("combined %d ", dev->combined_count);
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printf("\n");
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}
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ethtool_channels_get_list_free(channels);
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rreq._present.header = 1; /* ethtool needs an empty nest.. */
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rings = ethtool_rings_get_dump(ys, &rreq);
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if (!rings)
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goto err_close;
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printf("Rings:\n");
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ynl_dump_foreach(rings, dev) {
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printf(" %8s: ", dev->header.dev_name);
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if (dev->_present.rx)
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printf("rx %d ", dev->rx);
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if (dev->_present.tx)
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printf("tx %d ", dev->tx);
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printf("\n");
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}
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ethtool_rings_get_list_free(rings);
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ynl_sock_destroy(ys);
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return 0;
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err_close:
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fprintf(stderr, "YNL (%d): %s\n", ys->err.code, ys->err.msg);
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ynl_sock_destroy(ys);
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return 2;
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}