bnx2x: Add to VF <-> PF channel the release request

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>

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
index eebc01d..4dc754b 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
@@ -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

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
index e53f851..3dd5b26 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
@@ -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;
+}

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.h
index 728491f..561c656 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.h
@@ -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
 };