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authorHariprasad Shenai <hariprasad@chelsio.com>2014-06-27 17:53:47 +0400
committerDavid S. Miller <davem@davemloft.net>2014-07-02 05:56:10 +0400
commit35b1de5579704be0e03454f713dddd6f86eccb7e (patch)
treea103a63946eafd23e9bfd55c40b36739bc17db01 /drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
parent2eb27a16b58e07053e9bac2f050eb55b47bc9699 (diff)
downloadlinux-35b1de5579704be0e03454f713dddd6f86eccb7e.tar.xz
rdma/cxgb4: Fixes cxgb4 probe failure in VM when PF is exposed through PCI Passthrough
Change logic which determines our Physical Function at PCI Probe time. Now we read the PL_WHOAMI register and get the Physical Function. Pass Physical Function to Upper Layer Drivers in lld_info structure in the new field "pf" added to lld_info. This is useful for the cases where the PF, say PF4, is attached to a Virtual Machine via some form of "PCI Pass Through" technology and the PCI Function shows up as PF0 in the VM. Based on original work by Casey Leedom <leedom@chelsio.com> Signed-off-by: Casey Leedom <leedom@chelsio.com> Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h')
-rw-r--r--drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
index d719decbfb28..8f60851b75ad 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
@@ -253,6 +253,7 @@ struct cxgb4_lld_info {
int dbfifo_int_thresh; /* doorbell fifo int threshold */
unsigned int sge_pktshift; /* Padding between CPL and */
/* packet data */
+ unsigned int pf; /* Physical Function we're using */
bool enable_fw_ofld_conn; /* Enable connection through fw */
/* WR */
bool ulptx_memwrite_dsgl; /* use of T5 DSGL allowed */