cxgb4: set up filter action after rewrites

The current code sets up the filter action field before
rewrites are set up. When the action 'switch' is used
with rewrites, this may result in initial few packets
that get switched out don't have rewrites applied
on them.

So, make sure filter action is set up along with rewrites
or only after everything else is set up for rewrites.

Fixes: 12b276fbf6e0 ("cxgb4: add support to create hash filters")
Signed-off-by: Raju Rangoju <rajur@chelsio.com>
Link: https://lore.kernel.org/r/20201023115852.18262-1-rajur@chelsio.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c
index 6ec5f2f..4e55f70 100644 (file)
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c
@@ -145,13 +145,13 @@ static int configure_filter_smac(struct adapter *adap, struct filter_entry *f)
        int err;
 
        /* do a set-tcb for smac-sel and CWR bit.. */
-       err = set_tcb_tflag(adap, f, f->tid, TF_CCTRL_CWR_S, 1, 1);
-       if (err)
-               goto smac_err;
-
        err = set_tcb_field(adap, f, f->tid, TCB_SMAC_SEL_W,
                            TCB_SMAC_SEL_V(TCB_SMAC_SEL_M),
                            TCB_SMAC_SEL_V(f->smt->idx), 1);
+       if (err)
+               goto smac_err;
+
+       err = set_tcb_tflag(adap, f, f->tid, TF_CCTRL_CWR_S, 1, 1);
        if (!err)
                return 0;
 
@@ -862,6 +862,7 @@ int set_filter_wr(struct adapter *adapter, int fidx)
                      FW_FILTER_WR_DIRSTEERHASH_V(f->fs.dirsteerhash) |
                      FW_FILTER_WR_LPBK_V(f->fs.action == FILTER_SWITCH) |
                      FW_FILTER_WR_DMAC_V(f->fs.newdmac) |
+                     FW_FILTER_WR_SMAC_V(f->fs.newsmac) |
                      FW_FILTER_WR_INSVLAN_V(f->fs.newvlan == VLAN_INSERT ||
                                             f->fs.newvlan == VLAN_REWRITE) |
                      FW_FILTER_WR_RMVLAN_V(f->fs.newvlan == VLAN_REMOVE ||
@@ -879,7 +880,7 @@ int set_filter_wr(struct adapter *adapter, int fidx)
                 FW_FILTER_WR_OVLAN_VLD_V(f->fs.val.ovlan_vld) |
                 FW_FILTER_WR_IVLAN_VLDM_V(f->fs.mask.ivlan_vld) |
                 FW_FILTER_WR_OVLAN_VLDM_V(f->fs.mask.ovlan_vld));
-       fwr->smac_sel = 0;
+       fwr->smac_sel = f->smt->idx;
        fwr->rx_chan_rx_rpl_iq =
                htons(FW_FILTER_WR_RX_CHAN_V(0) |
                      FW_FILTER_WR_RX_RPL_IQ_V(adapter->sge.fw_evtq.abs_id));
@@ -1323,11 +1324,8 @@ static void mk_act_open_req6(struct filter_entry *f, struct sk_buff *skb,
                            TX_QUEUE_V(f->fs.nat_mode) |
                            T5_OPT_2_VALID_F |
                            RX_CHANNEL_V(cxgb4_port_e2cchan(f->dev)) |
-                           CONG_CNTRL_V((f->fs.action == FILTER_DROP) |
-                                        (f->fs.dirsteer << 1)) |
                            PACE_V((f->fs.maskhash) |
-                                  ((f->fs.dirsteerhash) << 1)) |
-                           CCTRL_ECN_V(f->fs.action == FILTER_SWITCH));
+                                  ((f->fs.dirsteerhash) << 1)));
 }
 
 static void mk_act_open_req(struct filter_entry *f, struct sk_buff *skb,
@@ -1363,11 +1361,8 @@ static void mk_act_open_req(struct filter_entry *f, struct sk_buff *skb,
                            TX_QUEUE_V(f->fs.nat_mode) |
                            T5_OPT_2_VALID_F |
                            RX_CHANNEL_V(cxgb4_port_e2cchan(f->dev)) |
-                           CONG_CNTRL_V((f->fs.action == FILTER_DROP) |
-                                        (f->fs.dirsteer << 1)) |
                            PACE_V((f->fs.maskhash) |
-                                  ((f->fs.dirsteerhash) << 1)) |
-                           CCTRL_ECN_V(f->fs.action == FILTER_SWITCH));
+                                  ((f->fs.dirsteerhash) << 1)));
 }
 
 static int cxgb4_set_hash_filter(struct net_device *dev,
@@ -2039,6 +2034,20 @@ void hash_filter_rpl(struct adapter *adap, const struct cpl_act_open_rpl *rpl)
                        }
                        return;
                }
+               switch (f->fs.action) {
+               case FILTER_PASS:
+                       if (f->fs.dirsteer)
+                               set_tcb_tflag(adap, f, tid,
+                                             TF_DIRECT_STEER_S, 1, 1);
+                       break;
+               case FILTER_DROP:
+                       set_tcb_tflag(adap, f, tid, TF_DROP_S, 1, 1);
+                       break;
+               case FILTER_SWITCH:
+                       set_tcb_tflag(adap, f, tid, TF_LPBK_S, 1, 1);
+                       break;
+               }
+
                break;
 
        default:
@@ -2106,22 +2115,11 @@ void filter_rpl(struct adapter *adap, const struct cpl_set_tcb_rpl *rpl)
                        if (ctx)
                                ctx->result = 0;
                } else if (ret == FW_FILTER_WR_FLT_ADDED) {
-                       int err = 0;
-
-                       if (f->fs.newsmac)
-                               err = configure_filter_smac(adap, f);
-
-                       if (!err) {
-                               f->pending = 0;  /* async setup completed */
-                               f->valid = 1;
-                               if (ctx) {
-                                       ctx->result = 0;
-                                       ctx->tid = idx;
-                               }
-                       } else {
-                               clear_filter(adap, f);
-                               if (ctx)
-                                       ctx->result = err;
+                       f->pending = 0;  /* async setup completed */
+                       f->valid = 1;
+                       if (ctx) {
+                               ctx->result = 0;
+                               ctx->tid = idx;
                        }
                } else {
                        /* Something went wrong.  Issue a warning about the

diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_tcb.h b/drivers/net/ethernet/chelsio/cxgb4/t4_tcb.h
index 50232e0..92473dd 100644 (file)
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_tcb.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_tcb.h
@@ -50,6 +50,10 @@
 #define TCB_T_FLAGS_M          0xffffffffffffffffULL
 #define TCB_T_FLAGS_V(x)       ((__u64)(x) << TCB_T_FLAGS_S)
 
+#define TF_DROP_S              22
+#define TF_DIRECT_STEER_S      23
+#define TF_LPBK_S              59
+
 #define TF_CCTRL_ECE_S         60
 #define TF_CCTRL_CWR_S         61
 #define TF_CCTRL_RFR_S         62