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linux/drivers/net/ethernet/cisco/enic/enic_clsf.h

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enic: devcmd for adding IP 5 tuple hardware filters This patch adds interface to add and delete IP 5 tuple filter. This interface is used by Accelerated RFS code to steer a flow to corresponding receive queue. As of now adaptor supports only ipv4 + tcp/udp packet steering. Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-23 18:38:00 +08:00
#ifndef _ENIC_CLSF_H_
#define _ENIC_CLSF_H_
#include "vnic_dev.h"
#include "enic.h"
enic: Add Accelerated RFS support This patch adds supports for Accelerated Receive Flow Steering. When the desired rx is different from current rq, for a flow, kernel calls the driver function enic_rx_flow_steer(). enic_rx_flow_steer adds a IP-TCP/UDP hardware filter. Driver registers a timer function enic_flow_may_expire. This function is called every HZ/4 seconds. In this function we check if the added filter has expired by calling rps_may_expire_flow(). If the flow has expired, it removes the hw filter. As of now adaptor supports only IPv4 - TCP/UDP filters. Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-23 18:38:02 +08:00
#define ENIC_CLSF_EXPIRE_COUNT 128
enic: devcmd for adding IP 5 tuple hardware filters This patch adds interface to add and delete IP 5 tuple filter. This interface is used by Accelerated RFS code to steer a flow to corresponding receive queue. As of now adaptor supports only ipv4 + tcp/udp packet steering. Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-23 18:38:00 +08:00
int enic_addfltr_5t(struct enic *enic, struct flow_keys *keys, u16 rq);
int enic_delfltr(struct enic *enic, u16 filter_id);
enic: Add Accelerated RFS support This patch adds supports for Accelerated Receive Flow Steering. When the desired rx is different from current rq, for a flow, kernel calls the driver function enic_rx_flow_steer(). enic_rx_flow_steer adds a IP-TCP/UDP hardware filter. Driver registers a timer function enic_flow_may_expire. This function is called every HZ/4 seconds. In this function we check if the added filter has expired by calling rps_may_expire_flow(). If the flow has expired, it removes the hw filter. As of now adaptor supports only IPv4 - TCP/UDP filters. Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-23 18:38:02 +08:00
void enic_rfs_flw_tbl_init(struct enic *enic);
void enic_rfs_flw_tbl_free(struct enic *enic);
enic: Add ethtool support to show classifier filters added by the driver This patch impliments ethtool_ops->get_rxnfc() to display the classifier filter added by the driver. Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-21 19:52:18 +08:00
struct enic_rfs_fltr_node *htbl_fltr_search(struct enic *enic, u16 fltr_id);
enic: remove #ifdef CONFIG_RFS_ACCEL around filter structures This patch removes the #ifdef CONFIG_RFS_ACCEL around the classifier filter structures. This makes the filter structures available when CONFIG_RFS_ACCEL = n. Introduce enic_rfs_timer_start() & enic_rfs_timer_stop() to start/stop the timer. These two functions are nop when CONFIG_RFS_ACCEL = n. Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-21 19:52:17 +08:00
#ifdef CONFIG_RFS_ACCEL
enic: Add Accelerated RFS support This patch adds supports for Accelerated Receive Flow Steering. When the desired rx is different from current rq, for a flow, kernel calls the driver function enic_rx_flow_steer(). enic_rx_flow_steer adds a IP-TCP/UDP hardware filter. Driver registers a timer function enic_flow_may_expire. This function is called every HZ/4 seconds. In this function we check if the added filter has expired by calling rps_may_expire_flow(). If the flow has expired, it removes the hw filter. As of now adaptor supports only IPv4 - TCP/UDP filters. Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-23 18:38:02 +08:00
int enic_rx_flow_steer(struct net_device *dev, const struct sk_buff *skb,
u16 rxq_index, u32 flow_id);
enic: remove #ifdef CONFIG_RFS_ACCEL around filter structures This patch removes the #ifdef CONFIG_RFS_ACCEL around the classifier filter structures. This makes the filter structures available when CONFIG_RFS_ACCEL = n. Introduce enic_rfs_timer_start() & enic_rfs_timer_stop() to start/stop the timer. These two functions are nop when CONFIG_RFS_ACCEL = n. Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-21 19:52:17 +08:00
void enic_flow_may_expire(unsigned long data);
static inline void enic_rfs_timer_start(struct enic *enic)
{
init_timer(&enic->rfs_h.rfs_may_expire);
enic->rfs_h.rfs_may_expire.function = enic_flow_may_expire;
enic->rfs_h.rfs_may_expire.data = (unsigned long)enic;
mod_timer(&enic->rfs_h.rfs_may_expire, jiffies + HZ/4);
}
static inline void enic_rfs_timer_stop(struct enic *enic)
{
del_timer_sync(&enic->rfs_h.rfs_may_expire);
}
enic: Make dummy rfs functions inline to fix !CONFIG_RFS_ACCEL build If CONFIG_RFS_ACCEL=n: drivers/net/ethernet/cisco/enic/enic_main.c: In function 'enic_open': drivers/net/ethernet/cisco/enic/enic_main.c:1603:2: error: implicit declaration of function 'enic_rfs_flw_tbl_init' [-Werror=implicit-function-declaration] drivers/net/ethernet/cisco/enic/enic_main.c: In function 'enic_stop': drivers/net/ethernet/cisco/enic/enic_main.c:1630:2: error: implicit declaration of function 'enic_rfs_flw_tbl_free' [-Werror=implicit-function-declaration] Introduced in commit a145df23ef32c7b933875f334ba28791ee75766e ("enic: Add Accelerated RFS support"). Dummy functions are provided, but their prototypes are missing, causing the build failure. Provide dummy static inline functions instead to fix this. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-25 16:31:09 +08:00
#else
enic: remove #ifdef CONFIG_RFS_ACCEL around filter structures This patch removes the #ifdef CONFIG_RFS_ACCEL around the classifier filter structures. This makes the filter structures available when CONFIG_RFS_ACCEL = n. Introduce enic_rfs_timer_start() & enic_rfs_timer_stop() to start/stop the timer. These two functions are nop when CONFIG_RFS_ACCEL = n. Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-21 19:52:17 +08:00
static inline void enic_rfs_timer_start(struct enic *enic) {}
static inline void enic_rfs_timer_stop(struct enic *enic) {}
enic: Add Accelerated RFS support This patch adds supports for Accelerated Receive Flow Steering. When the desired rx is different from current rq, for a flow, kernel calls the driver function enic_rx_flow_steer(). enic_rx_flow_steer adds a IP-TCP/UDP hardware filter. Driver registers a timer function enic_flow_may_expire. This function is called every HZ/4 seconds. In this function we check if the added filter has expired by calling rps_may_expire_flow(). If the flow has expired, it removes the hw filter. As of now adaptor supports only IPv4 - TCP/UDP filters. Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-23 18:38:02 +08:00
#endif /* CONFIG_RFS_ACCEL */
enic: devcmd for adding IP 5 tuple hardware filters This patch adds interface to add and delete IP 5 tuple filter. This interface is used by Accelerated RFS code to steer a flow to corresponding receive queue. As of now adaptor supports only ipv4 + tcp/udp packet steering. Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2014-06-23 18:38:00 +08:00
#endif /* _ENIC_CLSF_H_ */