bnx2x, bnx2fc: Use per port max exchange resources

The firmware supports a maximum of 4K FCoE exchanges. In 4-port devices,
or when working in multi-function mode, this resource needs to be distributed
between the various possible FCoE functions.

This information needs to be calculated by bnx2x and propagated into bnx2fc
via cnic. bnx2fc can then use this value to calculate corresponding xid
resources instead of using global constants.

Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 4 deletions

diff --git a/drivers/scsi/bnx2fc/bnx2fc_io.c b/drivers/scsi/bnx2fc/bnx2fc_io.c
index 60798e829de6..723a9a8ba5ee 100644
--- a/drivers/scsi/bnx2fc/bnx2fc_io.c
+++ b/drivers/scsi/bnx2fc/bnx2fc_io.c
@@ -239,8 +239,7 @@ static void bnx2fc_scsi_done(struct bnx2fc_cmd *io_req, int err_code)
         sc_cmd->scsi_done(sc_cmd);
 }
 
-struct bnx2fc_cmd_mgr *bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba *hba,
-                                                u16 min_xid, u16 max_xid)
+struct bnx2fc_cmd_mgr *bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba *hba)
 {
         struct bnx2fc_cmd_mgr *cmgr;
         struct io_bdt *bdt_info;
@@ -252,6 +251,8 @@ struct bnx2fc_cmd_mgr *bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba *hba,
         int num_ios, num_pri_ios;
         size_t bd_tbl_sz;
         int arr_sz = num_possible_cpus() + 1;
+        u16 min_xid = BNX2FC_MIN_XID;
+        u16 max_xid = hba->max_xid;
 
         if (max_xid <= min_xid || max_xid == FC_XID_UNKNOWN) {
                 printk(KERN_ERR PFX "cmd_mgr_alloc: Invalid min_xid 0x%x \
@@ -298,7 +299,7 @@ struct bnx2fc_cmd_mgr *bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba *hba,
          * of slow path requests.
          */
         xid = BNX2FC_MIN_XID;
-        num_pri_ios = num_ios - BNX2FC_ELSTM_XIDS;
+        num_pri_ios = num_ios - hba->elstm_xids;
         for (i = 0; i < num_ios; i++) {
                 io_req = kzalloc(sizeof(*io_req), GFP_KERNEL);
 
@@ -367,7 +368,7 @@ void bnx2fc_cmd_mgr_free(struct bnx2fc_cmd_mgr *cmgr)
         struct bnx2fc_hba *hba = cmgr->hba;
         size_t bd_tbl_sz;
         u16 min_xid = BNX2FC_MIN_XID;
-        u16 max_xid = BNX2FC_MAX_XID;
+        u16 max_xid = hba->max_xid;
         int num_ios;
         int i;