[dpdk-dev] [PATCH v5] net/i40e: fix flex payload rule conflict issue
From: <hidden>
Date: 2021-01-05 03:21:08
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Beilei Xing <redacted>
With the following commands, the second flow can't
be created successfully.
1. flow create 0 ingress pattern eth / ipv4 / udp /
raw relative is 1 pattern is 0102030405 / end
actions drop / end
2. flow destroy 0 rule 0
3. flow create 0 ingress pattern eth / ipv4 / udp /
raw relative is 1 pattern is 010203040506 / end
actions drop / end
The root cause is that a flag for flex pit isn't reset.
Fixes: 6ced3dd72f5f ("net/i40e: support flexible payload parsing for FDIR")
Cc: stable@dpdk.org
Reported-by: Chenmin Sun<redacted>
Signed-off-by: Beilei Xing <redacted>
---
v4 changes:
- Code refine.
v3 changes:
- Add flow count for flexible payload flow.
v2 changeds:
- Add fix line.
drivers/net/i40e/i40e_ethdev.h | 3 +++
drivers/net/i40e/i40e_fdir.c | 19 ++++++++++++++++---
drivers/net/i40e/i40e_flow.c | 4 ++++
3 files changed, 23 insertions(+), 3 deletions(-)
diff --git a/drivers/net/i40e/i40e_ethdev.h b/drivers/net/i40e/i40e_ethdev.h
index 696c5aaf7e..aac226999c 100644
--- a/drivers/net/i40e/i40e_ethdev.h
+++ b/drivers/net/i40e/i40e_ethdev.h@@ -636,6 +636,7 @@ struct i40e_fdir_flow_ext { bool is_udp; /* ipv4|ipv6 udp flow */ enum i40e_flxpld_layer_idx layer_idx; struct i40e_fdir_flex_pit flex_pit[I40E_MAX_FLXPLD_LAYER * I40E_MAX_FLXPLD_FIED]; + bool is_flex_flow; }; /* A structure used to define the input for a flow director filter entry */
@@ -784,6 +785,8 @@ struct i40e_fdir_info { bool flex_mask_flag[I40E_FILTER_PCTYPE_MAX]; bool inset_flag[I40E_FILTER_PCTYPE_MAX]; /* Mark if input set is set */ + + uint32_t flex_flow_count[I40E_MAX_FLXPLD_LAYER]; }; /* Ethertype filter number HW supports */
diff --git a/drivers/net/i40e/i40e_fdir.c b/drivers/net/i40e/i40e_fdir.c
index 50c0eee9f2..0343e8b09a 100644
--- a/drivers/net/i40e/i40e_fdir.c
+++ b/drivers/net/i40e/i40e_fdir.c@@ -355,6 +355,7 @@ i40e_init_flx_pld(struct i40e_pf *pf) I40E_PRTQF_FLX_PIT(index + 1), 0x0000FC29);/*non-used*/ I40E_WRITE_REG(hw, I40E_PRTQF_FLX_PIT(index + 2), 0x0000FC2A);/*non-used*/ + pf->fdir.flex_pit_flag[i] = 0; } /* initialize the masks */
@@ -1513,8 +1514,6 @@ i40e_flow_set_fdir_flex_pit(struct i40e_pf *pf, I40E_WRITE_REG(hw, I40E_PRTQF_FLX_PIT(field_idx), flx_pit); min_next_off++; } - - pf->fdir.flex_pit_flag[layer_idx] = 1; } static int
@@ -1686,7 +1685,7 @@ i40e_flow_add_del_fdir_filter(struct rte_eth_dev *dev, i40e_fdir_filter_convert(filter, &check_filter); if (add) { - if (!filter->input.flow_ext.customized_pctype) { + if (filter->input.flow_ext.is_flex_flow) { for (i = 0; i < filter->input.flow_ext.raw_id; i++) { layer_idx = filter->input.flow_ext.layer_idx; field_idx = layer_idx * I40E_MAX_FLXPLD_FIED + i;
@@ -1738,6 +1737,9 @@ i40e_flow_add_del_fdir_filter(struct rte_eth_dev *dev, fdir_info->fdir_guarantee_free_space > 0) wait_status = false; } else { + if (filter->input.flow_ext.is_flex_flow) + layer_idx = filter->input.flow_ext.layer_idx; + node = i40e_sw_fdir_filter_lookup(fdir_info, &check_filter.fdir.input); if (!node) {
@@ -1785,6 +1787,17 @@ i40e_flow_add_del_fdir_filter(struct rte_eth_dev *dev, goto error_op; } + if (filter->input.flow_ext.is_flex_flow) { + if (add) { + fdir_info->flex_flow_count[layer_idx]++; + pf->fdir.flex_pit_flag[layer_idx] = 1; + } else { + fdir_info->flex_flow_count[layer_idx]--; + if (!fdir_info->flex_flow_count[layer_idx]) + pf->fdir.flex_pit_flag[layer_idx] = 0; + } + } + if (add) { fdir_info->fdir_actual_cnt++; if (fdir_info->fdir_invalprio == 1 &&
diff --git a/drivers/net/i40e/i40e_flow.c b/drivers/net/i40e/i40e_flow.c
index b09ff6590d..bbd666b7a0 100644
--- a/drivers/net/i40e/i40e_flow.c
+++ b/drivers/net/i40e/i40e_flow.c@@ -3069,6 +3069,7 @@ i40e_flow_parse_fdir_pattern(struct rte_eth_dev *dev, &flex_pit, sizeof(struct i40e_fdir_flex_pit)); filter->input.flow_ext.layer_idx = layer_idx; filter->input.flow_ext.raw_id = raw_id; + filter->input.flow_ext.is_flex_flow = true; break; case RTE_FLOW_ITEM_TYPE_VF: vf_spec = item->spec;
@@ -5515,6 +5516,9 @@ i40e_flow_flush_fdir_filter(struct i40e_pf *pf) pf->fdir.flex_mask_flag[pctype] = 0; } + for (i = 0; i < I40E_MAX_FLXPLD_LAYER; i++) + pf->fdir.flex_pit_flag[i] = 0; + /* Disable FDIR processing as all FDIR rules are now flushed */ i40e_fdir_rx_proc_enable(dev, 0); }
--
2.26.2