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/*
* Copyright (c) 2016, Mellanox Technologies, Ltd. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <linux/prefetch.h>
#include <linux/ip.h>
#include <linux/udp.h>
#include <net/udp.h>
#include "en.h"
enum {
MLX5E_ST_LINK_STATE,
MLX5E_ST_LINK_SPEED,
MLX5E_ST_HEALTH_INFO,
#ifdef CONFIG_INET
MLX5E_ST_LOOPBACK,
#endif
MLX5E_ST_NUM,
};
const char mlx5e_self_tests[MLX5E_ST_NUM][ETH_GSTRING_LEN] = {
"Link Test",
"Speed Test",
"Health Test",
#ifdef CONFIG_INET
"Loopback Test",
#endif
};
int mlx5e_self_test_num(struct mlx5e_priv *priv)
{
return ARRAY_SIZE(mlx5e_self_tests);
}
static int mlx5e_test_health_info(struct mlx5e_priv *priv)
{
struct mlx5_core_health *health = &priv->mdev->priv.health;
return health->fatal_error ? 1 : 0;
}
static int mlx5e_test_link_state(struct mlx5e_priv *priv)
{
u8 port_state;
if (!netif_carrier_ok(priv->netdev))
return 1;
port_state = mlx5_query_vport_state(priv->mdev, MLX5_VPORT_STATE_OP_MOD_VNIC_VPORT, 0);
return port_state == VPORT_STATE_UP ? 0 : 1;
}
static int mlx5e_test_link_speed(struct mlx5e_priv *priv)
{
u32 out[MLX5_ST_SZ_DW(ptys_reg)];
u32 eth_proto_oper;
int i;
if (!netif_carrier_ok(priv->netdev))
return 1;
if (mlx5_query_port_ptys(priv->mdev, out, sizeof(out), MLX5_PTYS_EN, 1))
return 1;
eth_proto_oper = MLX5_GET(ptys_reg, out, eth_proto_oper);
for (i = 0; i < MLX5E_LINK_MODES_NUMBER; i++) {
if (eth_proto_oper & MLX5E_PROT_MASK(i))
return 0;
}
return 1;
}
struct mlx5ehdr {
__be32 version;
__be64 magic;
};
#ifdef CONFIG_INET
/* loopback test */
#define MLX5E_TEST_PKT_SIZE (sizeof(struct ethhdr) + sizeof(struct iphdr) +\
sizeof(struct udphdr) + sizeof(struct mlx5ehdr))
#define MLX5E_TEST_MAGIC 0x5AEED15C001ULL
static struct sk_buff *mlx5e_test_get_udp_skb(struct mlx5e_priv *priv)
{
struct sk_buff *skb = NULL;
struct mlx5ehdr *mlxh;
struct ethhdr *ethh;
struct udphdr *udph;
struct iphdr *iph;
int iplen;
skb = netdev_alloc_skb(priv->netdev, MLX5E_TEST_PKT_SIZE);
if (!skb) {
netdev_err(priv->netdev, "\tFailed to alloc loopback skb\n");
return NULL;
}
prefetchw(skb->data);
skb_reserve(skb, NET_IP_ALIGN);
/* Reserve for ethernet and IP header */
ethh = skb_push(skb, ETH_HLEN);
skb_reset_mac_header(skb);
skb_set_network_header(skb, skb->len);
iph = skb_put(skb, sizeof(struct iphdr));
skb_set_transport_header(skb, skb->len);
udph = skb_put(skb, sizeof(struct udphdr));
/* Fill ETH header */
ether_addr_copy(ethh->h_dest, priv->netdev->dev_addr);
eth_zero_addr(ethh->h_source);
ethh->h_proto = htons(ETH_P_IP);
/* Fill UDP header */
udph->source = htons(9);
udph->dest = htons(9); /* Discard Protocol */
udph->len = htons(sizeof(struct mlx5ehdr) + sizeof(struct udphdr));
udph->check = 0;
/* Fill IP header */
iph->ihl = 5;
iph->ttl = 32;
iph->version = 4;
iph->protocol = IPPROTO_UDP;
iplen = sizeof(struct iphdr) + sizeof(struct udphdr) +
sizeof(struct mlx5ehdr);
iph->tot_len = htons(iplen);
iph->frag_off = 0;
iph->saddr = 0;
iph->daddr = 0;
iph->tos = 0;
iph->id = 0;
ip_send_check(iph);
/* Fill test header and data */
mlxh = skb_put(skb, sizeof(*mlxh));
mlxh->version = 0;
mlxh->magic = cpu_to_be64(MLX5E_TEST_MAGIC);
skb->csum = 0;
skb->ip_summed = CHECKSUM_PARTIAL;
udp4_hwcsum(skb, iph->saddr, iph->daddr);
skb->protocol = htons(ETH_P_IP);
skb->pkt_type = PACKET_HOST;
skb->dev = priv->netdev;
return skb;
}
struct mlx5e_lbt_priv {
struct packet_type pt;
struct completion comp;
bool loopback_ok;
bool local_lb;
};
static int
mlx5e_test_loopback_validate(struct sk_buff *skb,
struct net_device *ndev,
struct packet_type *pt,
struct net_device *orig_ndev)
{
struct mlx5e_lbt_priv *lbtp = pt->af_packet_priv;
struct mlx5ehdr *mlxh;
struct ethhdr *ethh;
struct udphdr *udph;
struct iphdr *iph;
/* We are only going to peek, no need to clone the SKB */
if (MLX5E_TEST_PKT_SIZE - ETH_HLEN > skb_headlen(skb))
goto out;
ethh = (struct ethhdr *)skb_mac_header(skb);
if (!ether_addr_equal(ethh->h_dest, orig_ndev->dev_addr))
goto out;
iph = ip_hdr(skb);
if (iph->protocol != IPPROTO_UDP)
goto out;
/* Don't assume skb_transport_header() was set */
udph = (struct udphdr *)((u8 *)iph + 4 * iph->ihl);
if (udph->dest != htons(9))
goto out;
mlxh = (struct mlx5ehdr *)((char *)udph + sizeof(*udph));
if (mlxh->magic != cpu_to_be64(MLX5E_TEST_MAGIC))
goto out; /* so close ! */
/* bingo */
lbtp->loopback_ok = true;
complete(&lbtp->comp);
out:
kfree_skb(skb);
return 0;
}
static int mlx5e_test_loopback_setup(struct mlx5e_priv *priv,
struct mlx5e_lbt_priv *lbtp)
{
int err = 0;
/* Temporarily enable local_lb */
err = mlx5_nic_vport_query_local_lb(priv->mdev, &lbtp->local_lb);
if (err)
return err;
if (!lbtp->local_lb) {
err = mlx5_nic_vport_update_local_lb(priv->mdev, true);
if (err)
return err;
}
err = mlx5e_refresh_tirs(priv, true);
if (err)
goto out;
lbtp->loopback_ok = false;
init_completion(&lbtp->comp);
lbtp->pt.type = htons(ETH_P_IP);
lbtp->pt.func = mlx5e_test_loopback_validate;
lbtp->pt.dev = priv->netdev;
lbtp->pt.af_packet_priv = lbtp;
dev_add_pack(&lbtp->pt);
return 0;
out:
if (!lbtp->local_lb)
mlx5_nic_vport_update_local_lb(priv->mdev, false);
return err;
}
static void mlx5e_test_loopback_cleanup(struct mlx5e_priv *priv,
struct mlx5e_lbt_priv *lbtp)
{
if (!lbtp->local_lb)
mlx5_nic_vport_update_local_lb(priv->mdev, false);
dev_remove_pack(&lbtp->pt);
mlx5e_refresh_tirs(priv, false);
}
#define MLX5E_LB_VERIFY_TIMEOUT (msecs_to_jiffies(200))
static int mlx5e_test_loopback(struct mlx5e_priv *priv)
{
struct mlx5e_lbt_priv *lbtp;
struct sk_buff *skb = NULL;
int err;
if (!test_bit(
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