diff options
| author | Guvenc Gulce <guvenc@linux.ibm.com> | 2020-12-01 20:20:40 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2020-12-02 02:56:12 +0100 |
| commit | 3d453f53c786ac4f1c97022f4bc0e9d7613a05c3 (patch) | |
| tree | 1e09ea9a98afc639fd62b67f4c411c655c755366 /net/smc/smc_ib.c | |
| parent | net/smc: Add link counters for IB device ports (diff) | |
| download | linux-3d453f53c786ac4f1c97022f4bc0e9d7613a05c3.tar.xz linux-3d453f53c786ac4f1c97022f4bc0e9d7613a05c3.zip | |
net/smc: Add diagnostic information to smc ib-device
During smc ib-device creation, add network device ifindex to smc
ib-device structure. Register for netdevice changes and update ib-device
accordingly. This is needed for diagnostic purposes.
Signed-off-by: Guvenc Gulce <guvenc@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/smc/smc_ib.c')
| -rw-r--r-- | net/smc/smc_ib.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/net/smc/smc_ib.c b/net/smc/smc_ib.c index fc766b537ac7..61b025c912a9 100644 --- a/net/smc/smc_ib.c +++ b/net/smc/smc_ib.c @@ -557,6 +557,49 @@ out: static struct ib_client smc_ib_client; +static void smc_copy_netdev_ifindex(struct smc_ib_device *smcibdev, int port) +{ + struct ib_device *ibdev = smcibdev->ibdev; + struct net_device *ndev; + + if (!ibdev->ops.get_netdev) + return; + ndev = ibdev->ops.get_netdev(ibdev, port + 1); + if (ndev) { + smcibdev->ndev_ifidx[port] = ndev->ifindex; + dev_put(ndev); + } +} + +void smc_ib_ndev_change(struct net_device *ndev, unsigned long event) +{ + struct smc_ib_device *smcibdev; + struct ib_device *libdev; + struct net_device *lndev; + u8 port_cnt; + int i; + + mutex_lock(&smc_ib_devices.mutex); + list_for_each_entry(smcibdev, &smc_ib_devices.list, list) { + port_cnt = smcibdev->ibdev->phys_port_cnt; + for (i = 0; i < min_t(size_t, port_cnt, SMC_MAX_PORTS); i++) { + libdev = smcibdev->ibdev; + if (!libdev->ops.get_netdev) + continue; + lndev = libdev->ops.get_netdev(libdev, i + 1); + if (lndev) + dev_put(lndev); + if (lndev != ndev) + continue; + if (event == NETDEV_REGISTER) + smcibdev->ndev_ifidx[i] = ndev->ifindex; + if (event == NETDEV_UNREGISTER) + smcibdev->ndev_ifidx[i] = 0; + } + } + mutex_unlock(&smc_ib_devices.mutex); +} + /* callback function for ib_register_client() */ static int smc_ib_add_dev(struct ib_device *ibdev) { @@ -596,6 +639,7 @@ static int smc_ib_add_dev(struct ib_device *ibdev) if (smc_pnetid_by_dev_port(ibdev->dev.parent, i, smcibdev->pnetid[i])) smc_pnetid_by_table_ib(smcibdev, i + 1); + smc_copy_netdev_ifindex(smcibdev, i); pr_warn_ratelimited("smc: ib device %s port %d has pnetid " "%.16s%s\n", smcibdev->ibdev->name, i + 1, |