diff mbox series

[net-next,08/15] net/mlx5: DR, Add function that tells if STE miss addr has been initialized

Message ID 20221209001420.142794-9-saeed@kernel.org (mailing list archive)
State Accepted
Commit 1207a772c09d43f2720ed4296b8a5a096d62365a
Delegated to: Netdev Maintainers
Headers show
Series [net-next,01/15] net/mlx5: mlx5_ifc updates for MATCH_DEFINER general object | expand

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netdev/fixes_present success Fixes tag not required for -next series
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netdev/cover_letter success Pull request is its own cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers success CCed 5 of 5 maintainers
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 71 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Saeed Mahameed Dec. 9, 2022, 12:14 a.m. UTC 
From: Yevgeny Kliteynik <kliteyn@nvidia.com>

Up until now miss address in all the STEs was used to connect miss lists
and to link the last STE in the list to end anchor.
Match range STE will require special handling because its miss address is
part of the 'action'. That is, range action has hit and miss addresses.
Since the range action is always the last action, need to make sure that
its miss address isn't overwritten by the end anchor.

Adding new function mlx5dr_ste_is_miss_addr_set() to answer the question
whether the STE's miss address has already been set as part of STE
initialization. Use a callback that always returns false right now. Once
match range is added, a different callback will be used for that STE type.

Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Erez Shitrit <erezsh@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
 .../net/ethernet/mellanox/mlx5/core/steering/dr_rule.c |  3 +++
 .../net/ethernet/mellanox/mlx5/core/steering/dr_ste.c  | 10 ++++++++++
 .../net/ethernet/mellanox/mlx5/core/steering/dr_ste.h  |  1 +
 .../ethernet/mellanox/mlx5/core/steering/dr_ste_v1.c   |  6 ++++++
 .../ethernet/mellanox/mlx5/core/steering/dr_ste_v1.h   |  1 +
 .../ethernet/mellanox/mlx5/core/steering/dr_ste_v2.c   |  1 +
 .../ethernet/mellanox/mlx5/core/steering/dr_types.h    |  1 +
 7 files changed, 23 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_rule.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_rule.c
index 3351b2a1ba18..74cbe53ee9db 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_rule.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_rule.c
@@ -42,6 +42,9 @@  static void dr_rule_set_last_ste_miss_addr(struct mlx5dr_matcher *matcher,
 	struct mlx5dr_ste_ctx *ste_ctx = matcher->tbl->dmn->ste_ctx;
 	u64 icm_addr;
 
+	if (mlx5dr_ste_is_miss_addr_set(ste_ctx, hw_ste))
+		return;
+
 	icm_addr = mlx5dr_icm_pool_get_chunk_icm_addr(nic_matcher->e_anchor->chunk);
 	mlx5dr_ste_set_miss_addr(ste_ctx, hw_ste, icm_addr);
 }
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste.c
index 9e19a8dc9022..1e15f605df6e 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste.c
@@ -90,6 +90,16 @@  static void dr_ste_set_always_miss(struct dr_hw_ste_format *hw_ste)
 	hw_ste->mask[0] = 0;
 }
 
+bool mlx5dr_ste_is_miss_addr_set(struct mlx5dr_ste_ctx *ste_ctx,
+				 u8 *hw_ste_p)
+{
+	if (!ste_ctx->is_miss_addr_set)
+		return false;
+
+	/* check if miss address is already set for this type of STE */
+	return ste_ctx->is_miss_addr_set(hw_ste_p);
+}
+
 void mlx5dr_ste_set_miss_addr(struct mlx5dr_ste_ctx *ste_ctx,
 			      u8 *hw_ste_p, u64 miss_addr)
 {
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste.h b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste.h
index 17513baff9b0..7075142bcfb6 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste.h
@@ -151,6 +151,7 @@  struct mlx5dr_ste_ctx {
 			 bool is_rx, u16 gvmi);
 	void (*set_next_lu_type)(u8 *hw_ste_p, u16 lu_type);
 	u16  (*get_next_lu_type)(u8 *hw_ste_p);
+	bool (*is_miss_addr_set)(u8 *hw_ste_p);
 	void (*set_miss_addr)(u8 *hw_ste_p, u64 miss_addr);
 	u64  (*get_miss_addr)(u8 *hw_ste_p);
 	void (*set_hit_addr)(u8 *hw_ste_p, u64 icm_addr, u32 ht_size);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste_v1.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste_v1.c
index ee677a5c76be..87c29118c51b 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste_v1.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste_v1.c
@@ -267,6 +267,11 @@  static void dr_ste_v1_set_entry_type(u8 *hw_ste_p, u8 entry_type)
 	MLX5_SET(ste_match_bwc_v1, hw_ste_p, entry_format, entry_type);
 }
 
+bool dr_ste_v1_is_miss_addr_set(u8 *hw_ste_p)
+{
+	return false;
+}
+
 void dr_ste_v1_set_miss_addr(u8 *hw_ste_p, u64 miss_addr)
 {
 	u64 index = miss_addr >> 6;
@@ -2144,6 +2149,7 @@  static struct mlx5dr_ste_ctx ste_ctx_v1 = {
 	.ste_init			= &dr_ste_v1_init,
 	.set_next_lu_type		= &dr_ste_v1_set_next_lu_type,
 	.get_next_lu_type		= &dr_ste_v1_get_next_lu_type,
+	.is_miss_addr_set		= &dr_ste_v1_is_miss_addr_set,
 	.set_miss_addr			= &dr_ste_v1_set_miss_addr,
 	.get_miss_addr			= &dr_ste_v1_get_miss_addr,
 	.set_hit_addr			= &dr_ste_v1_set_hit_addr,
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste_v1.h b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste_v1.h
index 8a1d49790c6e..b5c0f0f8392f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste_v1.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste_v1.h
@@ -7,6 +7,7 @@ 
 #include "dr_types.h"
 #include "dr_ste.h"
 
+bool dr_ste_v1_is_miss_addr_set(u8 *hw_ste_p);
 void dr_ste_v1_set_miss_addr(u8 *hw_ste_p, u64 miss_addr);
 u64 dr_ste_v1_get_miss_addr(u8 *hw_ste_p);
 void dr_ste_v1_set_byte_mask(u8 *hw_ste_p, u16 byte_mask);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste_v2.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste_v2.c
index c60fddd125d2..cf1a3c9a1cf4 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste_v2.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste_v2.c
@@ -202,6 +202,7 @@  static struct mlx5dr_ste_ctx ste_ctx_v2 = {
 	.ste_init			= &dr_ste_v1_init,
 	.set_next_lu_type		= &dr_ste_v1_set_next_lu_type,
 	.get_next_lu_type		= &dr_ste_v1_get_next_lu_type,
+	.is_miss_addr_set		= &dr_ste_v1_is_miss_addr_set,
 	.set_miss_addr			= &dr_ste_v1_set_miss_addr,
 	.get_miss_addr			= &dr_ste_v1_get_miss_addr,
 	.set_hit_addr			= &dr_ste_v1_set_hit_addr,
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_types.h b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_types.h
index 94093c3b55a5..a3e8ce415563 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_types.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_types.h
@@ -238,6 +238,7 @@  static inline void mlx5dr_htbl_get(struct mlx5dr_ste_htbl *htbl)
 
 /* STE utils */
 u32 mlx5dr_ste_calc_hash_index(u8 *hw_ste_p, struct mlx5dr_ste_htbl *htbl);
+bool mlx5dr_ste_is_miss_addr_set(struct mlx5dr_ste_ctx *ste_ctx, u8 *hw_ste_p);
 void mlx5dr_ste_set_miss_addr(struct mlx5dr_ste_ctx *ste_ctx,
 			      u8 *hw_ste, u64 miss_addr);
 void mlx5dr_ste_set_hit_addr(struct mlx5dr_ste_ctx *ste_ctx,