Commit 456a5849 authored by Kalderon, Michal's avatar Kalderon, Michal Committed by David S. Miller
Browse files

qed: iWARP CM add passive side connect 



This patch implements the passive side connect.
It addresses pre-allocating resources, creating a connection
element upon valid SYN packet received. Calling upper layer and
implementation of the accept/reject calls.

Error handling is not part of this patch.

Signed-off-by: default avatarMichal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: default avatarYuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: default avatarAriel Elior <Ariel.Elior@cavium.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 65a91a6c

drivers/net/ethernet/qlogic/qed/qed.h

+2 −0
Original line number Diff line number Diff line
@@ -789,6 +789,8 @@ void qed_configure_vp_wfq_on_link_change(struct qed_dev *cdev, 
void qed_clean_wfq_db(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);

int qed_device_num_engines(struct qed_dev *cdev);

int qed_device_get_port_id(struct qed_dev *cdev);

void qed_set_fw_mac_addr(__le16 *fw_msb,

			 __le16 *fw_mid, __le16 *fw_lsb, u8 *mac);



#define QED_LEADING_HWFN(dev)   (&dev->hwfns[0])

drivers/net/ethernet/qlogic/qed/qed_dev.c

+11 −0
Original line number Diff line number Diff line
@@ -4127,3 +4127,14 @@ int qed_device_get_port_id(struct qed_dev *cdev) 
{

	return (QED_LEADING_HWFN(cdev)->abs_pf_id) % qed_device_num_ports(cdev);

}



void qed_set_fw_mac_addr(__le16 *fw_msb,

			 __le16 *fw_mid, __le16 *fw_lsb, u8 *mac)

{

	((u8 *)fw_msb)[0] = mac[1];

	((u8 *)fw_msb)[1] = mac[0];

	((u8 *)fw_mid)[0] = mac[3];

	((u8 *)fw_mid)[1] = mac[2];

	((u8 *)fw_lsb)[0] = mac[5];

	((u8 *)fw_lsb)[1] = mac[4];

}

drivers/net/ethernet/qlogic/qed/qed_iwarp.c

+933 −6

File changed.

Preview size limit exceeded, changes collapsed.

drivers/net/ethernet/qlogic/qed/qed_iwarp.h

+62 −0
Original line number Diff line number Diff line
@@ -42,6 +42,8 @@ enum qed_iwarp_qp_state { 


enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state);



#define QED_IWARP_PREALLOC_CNT  (256)



#define QED_IWARP_LL2_SYN_TX_SIZE       (128)

#define QED_IWARP_LL2_SYN_RX_SIZE       (256)

#define QED_IWARP_MAX_SYN_PKT_SIZE      (128)
@@ -55,6 +57,8 @@ struct qed_iwarp_ll2_buff { 


struct qed_iwarp_info {

	struct list_head listen_list;	/* qed_iwarp_listener */

	struct list_head ep_list;	/* qed_iwarp_ep */

	struct list_head ep_free_list;	/* pre-allocated ep's */

	spinlock_t iw_lock;	/* for iwarp resources */

	spinlock_t qp_lock;	/* for teardown races */

	u32 rcv_wnd_scale;
@@ -68,6 +72,61 @@ struct qed_iwarp_info { 
	enum mpa_rtr_type rtr_type;

};



enum qed_iwarp_ep_state {

	QED_IWARP_EP_INIT,

	QED_IWARP_EP_MPA_REQ_RCVD,

	QED_IWARP_EP_MPA_OFFLOADED,

	QED_IWARP_EP_ESTABLISHED,

	QED_IWARP_EP_CLOSED

};



union async_output {

	struct iwarp_eqe_data_mpa_async_completion mpa_response;

	struct iwarp_eqe_data_tcp_async_completion mpa_request;

};



#define QED_MAX_PRIV_DATA_LEN (512)

struct qed_iwarp_ep_memory {

	u8 in_pdata[QED_MAX_PRIV_DATA_LEN];

	u8 out_pdata[QED_MAX_PRIV_DATA_LEN];

	union async_output async_output;

};



/* Endpoint structure represents a TCP connection. This connection can be

 * associated with a QP or not (in which case QP==NULL)

 */

struct qed_iwarp_ep {

	struct list_head list_entry;

	struct qed_rdma_qp *qp;

	struct qed_iwarp_ep_memory *ep_buffer_virt;

	dma_addr_t ep_buffer_phys;

	enum qed_iwarp_ep_state state;

	int sig;

	struct qed_iwarp_cm_info cm_info;

	enum tcp_connect_mode connect_mode;

	enum mpa_rtr_type rtr_type;

	enum mpa_negotiation_mode mpa_rev;

	u32 tcp_cid;

	u32 cid;

	u16 mss;

	u8 remote_mac_addr[6];

	u8 local_mac_addr[6];

	bool mpa_reply_processed;



	/* For Passive side - syn packet related data */

	u16 syn_ip_payload_length;

	struct qed_iwarp_ll2_buff *syn;

	dma_addr_t syn_phy_addr;



	/* The event_cb function is called for asynchrounous events associated

	 * with the ep. It is initialized at different entry points depending

	 * on whether the ep is the tcp connection active side or passive side

	 * The cb_context is passed to the event_cb function.

	 */

	iwarp_event_handler event_cb;

	void *cb_context;

};



struct qed_iwarp_listener {

	struct list_head list_entry;
@@ -115,6 +174,9 @@ qed_iwarp_create_listen(void *rdma_cxt, 
			struct qed_iwarp_listen_in *iparams,

			struct qed_iwarp_listen_out *oparams);



int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams);



int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams);

int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle);



#endif

drivers/net/ethernet/qlogic/qed/qed_l2.c

+0 −13
Original line number Diff line number Diff line
@@ -1227,19 +1227,6 @@ static enum eth_filter_action qed_filter_action(enum qed_filter_opcode opcode) 
	return action;

}



static void qed_set_fw_mac_addr(__le16 *fw_msb,

				__le16 *fw_mid,

				__le16 *fw_lsb,

				u8 *mac)

{

	((u8 *)fw_msb)[0] = mac[1];

	((u8 *)fw_msb)[1] = mac[0];

	((u8 *)fw_mid)[0] = mac[3];

	((u8 *)fw_mid)[1] = mac[2];

	((u8 *)fw_lsb)[0] = mac[5];

	((u8 *)fw_lsb)[1] = mac[4];

}



static int

qed_filter_ucast_common(struct qed_hwfn *p_hwfn,

			u16 opaque_fid,

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