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authorOr Gerlitz <ogerlitz@mellanox.com>2016-07-01 14:51:01 +0300
committerDavid S. Miller <davem@davemloft.net>2016-07-02 14:40:40 -0400
commit08f4b5918b2d6b491f0403cc1886f5cdccef89bb (patch)
tree35da396f43f718b63095c9e552ec4cfe26a27a6e /net/core
parentfed9ce22bf8ae8f417b8f047d2d630542d152ccf (diff)
downloadlinux-08f4b5918b2d6b491f0403cc1886f5cdccef89bb.tar.bz2
net/devlink: Add E-Switch mode control
Add the commands to set and show the mode of SRIOV E-Switch, two modes are supported: * legacy: operating in the "old" L2 based mode (DMAC --> VF vport) * switchdev: the E-Switch is referred to as whitebox switch configured using standard tools such as tc, bridge, openvswitch etc. To allow working with the tools, for each VF, a VF representor netdevice is created by the E-Switch manager vendor device driver instance (e.g PF). Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/devlink.c87
1 files changed, 87 insertions, 0 deletions
diff --git a/net/core/devlink.c b/net/core/devlink.c
index 933e8d4d3968..b2e592a198c0 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -1394,6 +1394,78 @@ static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb,
return -EOPNOTSUPP;
}
+static int devlink_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
+ enum devlink_command cmd, u32 portid,
+ u32 seq, int flags, u16 mode)
+{
+ void *hdr;
+
+ hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (devlink_nl_put_handle(msg, devlink))
+ goto nla_put_failure;
+
+ if (nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode))
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static int devlink_nl_cmd_eswitch_mode_get_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ const struct devlink_ops *ops = devlink->ops;
+ struct sk_buff *msg;
+ u16 mode;
+ int err;
+
+ if (!ops || !ops->eswitch_mode_get)
+ return -EOPNOTSUPP;
+
+ err = ops->eswitch_mode_get(devlink, &mode);
+ if (err)
+ return err;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ err = devlink_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_MODE_GET,
+ info->snd_portid, info->snd_seq, 0, mode);
+
+ if (err) {
+ nlmsg_free(msg);
+ return err;
+ }
+
+ return genlmsg_reply(msg, info);
+}
+
+static int devlink_nl_cmd_eswitch_mode_set_doit(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+ const struct devlink_ops *ops = devlink->ops;
+ u16 mode;
+
+ if (!info->attrs[DEVLINK_ATTR_ESWITCH_MODE])
+ return -EINVAL;
+
+ mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
+
+ if (ops && ops->eswitch_mode_set)
+ return ops->eswitch_mode_set(devlink, mode);
+ return -EOPNOTSUPP;
+}
+
static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
[DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
[DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
@@ -1407,6 +1479,7 @@ static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 },
[DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 },
[DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
+ [DEVLINK_ATTR_ESWITCH_MODE] = { .type = NLA_U16 },
};
static const struct genl_ops devlink_nl_ops[] = {
@@ -1525,6 +1598,20 @@ static const struct genl_ops devlink_nl_ops[] = {
DEVLINK_NL_FLAG_NEED_SB |
DEVLINK_NL_FLAG_LOCK_PORTS,
},
+ {
+ .cmd = DEVLINK_CMD_ESWITCH_MODE_GET,
+ .doit = devlink_nl_cmd_eswitch_mode_get_doit,
+ .policy = devlink_nl_policy,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
+ },
+ {
+ .cmd = DEVLINK_CMD_ESWITCH_MODE_SET,
+ .doit = devlink_nl_cmd_eswitch_mode_set_doit,
+ .policy = devlink_nl_policy,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
+ },
};
/**