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cxgb4/iw_cxgb4: TOS support

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This series provides support for iWARP applications to specify a TOS
value and have that map to a VLAN Priority for iw_cxgb4 iWARP connections.

In iw_cxgb4, when allocating an L2T entry, pass the skb_priority based
on the tos value in the cm_id. Also pass the correct tos value during
connection setup so the passive side gets the client's desired tos.
When sending the FLOWC work request to FW, if the egress device is
in a vlan, then use the vlan priority bits as the scheduling class.
This allows associating RDMA connections with scheduling classes to
provide traffic shaping per flow.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hariprasad Shenai
2016-02-05 11:43:30 +05:30
committed by David S. Miller
parent 6102c66eeb
commit ba9cee6aa6
3 changed files with 37 additions and 17 deletions
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2
drivers/net/ethernet/chelsio/cxgb4/t4_msg.h
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@@ -1021,6 +1021,8 @@ struct cpl_l2t_write_req {
#define L2T_W_NOREPLY_V(x) ((x) << L2T_W_NOREPLY_S)
#define L2T_W_NOREPLY_F L2T_W_NOREPLY_V(1U)
#define CPL_L2T_VLAN_NONE 0xfff
struct cpl_l2t_write_rpl {
union opcode_tid ot;
u8 status;

1
drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h
View File

@@ -561,6 +561,7 @@ enum fw_flowc_mnem {
FW_FLOWC_MNEM_SNDBUF,
FW_FLOWC_MNEM_MSS,
FW_FLOWC_MNEM_TXDATAPLEN_MAX,
FW_FLOWC_MNEM_SCHEDCLASS = 11,
};
struct fw_flowc_mnemval {