redonkable/alistair23-linux
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bnx2x: Add to VF <-> PF channel the release request

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VF driver uses this request when removed. The PF driver
reclaims all resources allocated for that VF at this
time.

Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ariel Elior 2013-01-01 05:22:25 +00:00 committed by David S. Miller
parent be1f1ffaf9
commit 4513f92576
3 changed files with 59 additions and 0 deletions
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1
drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
View file

@ -2220,6 +2220,7 @@ static inline u32 reg_poll(struct bnx2x *bp, u32 reg, u32 expected, int ms,
int bnx2x_get_vf_id(struct bnx2x *bp, u32 *vf_id);
int bnx2x_send_msg2pf(struct bnx2x *bp, u8 *done, dma_addr_t msg_mapping);
int bnx2x_vfpf_acquire(struct bnx2x *bp, u8 tx_count, u8 rx_count);
int bnx2x_vfpf_release(struct bnx2x *bp);
/* Congestion management fairness mode */
#define CMNG_FNS_NONE 0
#define CMNG_FNS_MINMAX 1

43
drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
View file

@ -12363,6 +12363,9 @@ static void bnx2x_remove_one(struct pci_dev *pdev)
/* Make sure RESET task is not scheduled before continuing */
cancel_delayed_work_sync(&bp->sp_rtnl_task);
/* send message via vfpf channel to release the resources of this vf */
if (IS_VF(bp))
bnx2x_vfpf_release(bp);
if (bp->regview)
iounmap(bp->regview);
@ -13343,3 +13346,43 @@ int bnx2x_vfpf_acquire(struct bnx2x *bp, u8 tx_count, u8 rx_count)
return 0;
}
int bnx2x_vfpf_release(struct bnx2x *bp)
{
struct vfpf_release_tlv *req = &bp->vf2pf_mbox->req.release;
struct pfvf_general_resp_tlv *resp = &bp->vf2pf_mbox->resp.general_resp;
u32 rc = 0, vf_id;
/* clear mailbox and prep first tlv */
bnx2x_vfpf_prep(bp, &req->first_tlv, CHANNEL_TLV_RELEASE, sizeof(*req));
if (bnx2x_get_vf_id(bp, &vf_id))
return -EAGAIN;
req->vf_id = vf_id;
/* add list termination tlv */
bnx2x_add_tlv(bp, req, req->first_tlv.tl.length, CHANNEL_TLV_LIST_END,
sizeof(struct channel_list_end_tlv));
/* output tlvs list */
bnx2x_dp_tlv_list(bp, req);
/* send release request */
rc = bnx2x_send_msg2pf(bp, &resp->hdr.status, bp->vf2pf_mbox_mapping);
if (rc)
/* PF timeout */
return rc;
if (resp->hdr.status == PFVF_STATUS_SUCCESS) {
/* PF released us */
DP(BNX2X_MSG_SP, "vf released\n");
} else {
/* PF reports error */
BNX2X_ERR("PF failed our release request - are we out of sync? response status: %d\n",
resp->hdr.status);
return -EAGAIN;
}
return 0;
}

15
drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.h
View file

@ -68,6 +68,11 @@ struct pfvf_tlv {
u8 padding[3];
};
/* response tlv used for most tlvs */
struct pfvf_general_resp_tlv {
struct pfvf_tlv hdr;
};
/* used to terminate and pad a tlv list */
struct channel_list_end_tlv {
struct channel_tlv tl;
@ -125,6 +130,13 @@ struct pfvf_acquire_resp_tlv {
} resc;
};
/* release the VF's acquired resources */
struct vfpf_release_tlv {
struct vfpf_first_tlv first_tlv;
u16 vf_id;
u8 padding[2];
};
struct tlv_buffer_size {
u8 tlv_buffer[TLV_BUFFER_SIZE];
};
@ -132,11 +144,13 @@ struct tlv_buffer_size {
union vfpf_tlvs {
struct vfpf_first_tlv first_tlv;
struct vfpf_acquire_tlv acquire;
struct vfpf_release_tlv release;
struct channel_list_end_tlv list_end;
struct tlv_buffer_size tlv_buf_size;
};
union pfvf_tlvs {
struct pfvf_general_resp_tlv general_resp;
struct pfvf_acquire_resp_tlv acquire_resp;
struct channel_list_end_tlv list_end;
struct tlv_buffer_size tlv_buf_size;
@ -147,6 +161,7 @@ union pfvf_tlvs {
enum channel_tlvs {
CHANNEL_TLV_NONE,
CHANNEL_TLV_ACQUIRE,
CHANNEL_TLV_RELEASE,
CHANNEL_TLV_LIST_END,
CHANNEL_TLV_MAX
};