From 8d951a75d022d94a05f5fa74217670a981e8302d Mon Sep 17 00:00:00 2001 From: Samuel Mendoza-Jonas Date: Fri, 16 Nov 2018 15:51:59 +1100 Subject: net/ncsi: Configure multi-package, multi-channel modes with failover This patch extends the ncsi-netlink interface with two new commands and three new attributes to configure multiple packages and/or channels at once, and configure specific failover modes. NCSI_CMD_SET_PACKAGE mask and NCSI_CMD_SET_CHANNEL_MASK set a whitelist of packages or channels allowed to be configured with the NCSI_ATTR_PACKAGE_MASK and NCSI_ATTR_CHANNEL_MASK attributes respectively. If one of these whitelists is set only packages or channels matching the whitelist are considered for the channel queue in ncsi_choose_active_channel(). These commands may also use the NCSI_ATTR_MULTI_FLAG to signal that multiple packages or channels may be configured simultaneously. NCSI hardware arbitration (HWA) must be available in order to enable multi-package mode. Multi-channel mode is always available. If the NCSI_ATTR_CHANNEL_ID attribute is present in the NCSI_CMD_SET_CHANNEL_MASK command the it sets the preferred channel as with the NCSI_CMD_SET_INTERFACE command. The combination of preferred channel and channel whitelist defines a primary channel and the allowed failover channels. If the NCSI_ATTR_MULTI_FLAG attribute is also present then the preferred channel is configured for Tx/Rx and the other channels are enabled only for Rx. Signed-off-by: Samuel Mendoza-Jonas Signed-off-by: David S. Miller --- net/ncsi/internal.h | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) (limited to 'net/ncsi/internal.h') diff --git a/net/ncsi/internal.h b/net/ncsi/internal.h index bda51cb179fe..9e3642b802c4 100644 --- a/net/ncsi/internal.h +++ b/net/ncsi/internal.h @@ -222,6 +222,10 @@ struct ncsi_package { unsigned int channel_num; /* Number of channels */ struct list_head channels; /* List of chanels */ struct list_head node; /* Form list of packages */ + + bool multi_channel; /* Enable multiple channels */ + u32 channel_whitelist; /* Channels to configure */ + struct ncsi_channel *preferred_channel; /* Primary channel */ }; struct ncsi_request { @@ -297,8 +301,6 @@ struct ncsi_dev_priv { unsigned int package_num; /* Number of packages */ struct list_head packages; /* List of packages */ struct ncsi_channel *hot_channel; /* Channel was ever active */ - struct ncsi_package *force_package; /* Force a specific package */ - struct ncsi_channel *force_channel; /* Force a specific channel */ struct ncsi_request requests[256]; /* Request table */ unsigned int request_id; /* Last used request ID */ #define NCSI_REQ_START_IDX 1 @@ -311,6 +313,9 @@ struct ncsi_dev_priv { struct list_head node; /* Form NCSI device list */ #define NCSI_MAX_VLAN_VIDS 15 struct list_head vlan_vids; /* List of active VLAN IDs */ + + bool multi_package; /* Enable multiple packages */ + u32 package_whitelist; /* Packages to configure */ }; struct ncsi_cmd_arg { @@ -364,6 +369,13 @@ struct ncsi_request *ncsi_alloc_request(struct ncsi_dev_priv *ndp, void ncsi_free_request(struct ncsi_request *nr); struct ncsi_dev *ncsi_find_dev(struct net_device *dev); int ncsi_process_next_channel(struct ncsi_dev_priv *ndp); +bool ncsi_channel_has_link(struct ncsi_channel *channel); +bool ncsi_channel_is_last(struct ncsi_dev_priv *ndp, + struct ncsi_channel *channel); +int ncsi_update_tx_channel(struct ncsi_dev_priv *ndp, + struct ncsi_package *np, + struct ncsi_channel *disable, + struct ncsi_channel *enable); /* Packet handlers */ u32 ncsi_calculate_checksum(unsigned char *data, int len); -- cgit v1.2.3