diff options
| author | Simon Horman <simon.horman@netronome.com> | 2017-06-29 23:08:12 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-01 18:51:32 +0300 |
| commit | 8f15df600dff00c8f28c8588bdd4dca55dff690b (patch) | |
| tree | 3e781736505532d6c82a8041f3b7f1b313dff2ce /drivers/net/ethernet/netronome/nfp/nfp_port.c | |
| parent | d643a75ac2bcc559994405d29c50ed086aeae434 (diff) | |
| download | linux-8f15df600dff00c8f28c8588bdd4dca55dff690b.tar.xz | |
nfp: add phys_switch_id support
Add phys_switch_id support by allowing lookup of
SWITCHDEV_ATTR_ID_PORT_PARENT_ID via the nfp_repr_port_attr_get
switchdev operation.
This is visible to user-space in the phys_switch_id attribute
of a netdev.
e.g.
cd /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0
find . -name phys_switch_id | xargs grep .
./net/eth3/phys_switch_id:00154d1300bd
./net/eth4/phys_switch_id:00154d1300bd
./net/eth2/phys_switch_id:00154d1300bd
grep: ./net/eth5/phys_switch_id: Operation not supported
In the above eth2 and eth3 and representor netdevs for the first and second
physical port. eth4 is the representor for the PF. And eth5 is the PF netdev.
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/nfp_port.c')
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/nfp_port.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_port.c b/drivers/net/ethernet/netronome/nfp/nfp_port.c index 0b44952945d8..3aa834fb2250 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_port.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_port.c @@ -32,6 +32,7 @@ */ #include <linux/lockdep.h> +#include <net/switchdev.h> #include "nfpcore/nfp_cpp.h" #include "nfpcore/nfp_nsp.h" @@ -59,6 +60,34 @@ struct nfp_port *nfp_port_from_netdev(struct net_device *netdev) return NULL; } +static int +nfp_port_attr_get(struct net_device *netdev, struct switchdev_attr *attr) +{ + struct nfp_port *port; + + port = nfp_port_from_netdev(netdev); + if (!port) + return -EOPNOTSUPP; + + switch (attr->id) { + case SWITCHDEV_ATTR_ID_PORT_PARENT_ID: { + const u8 *serial; + /* N.B: attr->u.ppid.id is binary data */ + attr->u.ppid.id_len = nfp_cpp_serial(port->app->cpp, &serial); + memcpy(&attr->u.ppid.id, serial, attr->u.ppid.id_len); + break; + } + default: + return -EOPNOTSUPP; + } + + return 0; +} + +const struct switchdev_ops nfp_port_switchdev_ops = { + .switchdev_port_attr_get = nfp_port_attr_get, +}; + struct nfp_port * nfp_port_from_id(struct nfp_pf *pf, enum nfp_port_type type, unsigned int id) { |