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nfp: abm: look up MAC addresses via management FW

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In multi-host scenarios Management FW may allocate MAC addresses
at runtime, we have to use the indirect lookup to find them.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2018-08-28 13:20:37 -07:00 committed by David S. Miller
parent 34243f5909
commit f6e71efdf9
1 changed files with 25 additions and 9 deletions
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34
drivers/net/ethernet/netronome/nfp/abm/main.c
View File

@ -540,8 +540,9 @@ nfp_abm_vnic_set_mac(struct nfp_pf *pf, struct nfp_abm *abm, struct nfp_net *nn,
{
struct nfp_eth_table_port *eth_port = &pf->eth_tbl->ports[id];
u8 mac_addr[ETH_ALEN];
const char *mac_str;
char name[32];
struct nfp_nsp *nsp;
char hwinfo[32];
int err;
if (id > pf->eth_tbl->count) {
nfp_warn(pf->cpp, "No entry for persistent MAC address\n");
@ -549,22 +550,37 @@ nfp_abm_vnic_set_mac(struct nfp_pf *pf, struct nfp_abm *abm, struct nfp_net *nn,
return;
}
snprintf(name, sizeof(name), "eth%u.mac.pf%u",
snprintf(hwinfo, sizeof(hwinfo), "eth%u.mac.pf%u",
eth_port->eth_index, abm->pf_id);
mac_str = nfp_hwinfo_lookup(pf->hwinfo, name);
if (!mac_str) {
nfp_warn(pf->cpp, "Can't lookup persistent MAC address (%s)\n",
name);
nsp = nfp_nsp_open(pf->cpp);
if (IS_ERR(nsp)) {
nfp_warn(pf->cpp, "Failed to access the NSP for persistent MAC address: %ld\n",
PTR_ERR(nsp));
eth_hw_addr_random(nn->dp.netdev);
return;
}
if (sscanf(mac_str, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
if (!nfp_nsp_has_hwinfo_lookup(nsp)) {
nfp_warn(pf->cpp, "NSP doesn't support PF MAC generation\n");
eth_hw_addr_random(nn->dp.netdev);
return;
}
err = nfp_nsp_hwinfo_lookup(nsp, hwinfo, sizeof(hwinfo));
nfp_nsp_close(nsp);
if (err) {
nfp_warn(pf->cpp, "Reading persistent MAC address failed: %d\n",
err);
eth_hw_addr_random(nn->dp.netdev);
return;
}
if (sscanf(hwinfo, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
&mac_addr[0], &mac_addr[1], &mac_addr[2],
&mac_addr[3], &mac_addr[4], &mac_addr[5]) != 6) {
nfp_warn(pf->cpp, "Can't parse persistent MAC address (%s)\n",
mac_str);
hwinfo);
eth_hw_addr_random(nn->dp.netdev);
return;
}