6.5-stable review patch. If anyone has any objections, please let me know.
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From: Johannes Berg johannes.berg@intel.com
[ Upstream commit 2cf254c1e24fa8f01f42f5a8c77617e56bf50b86 ]
EHT devices can support 512 MPDUs in an A-MPDU, each of which might be an A-MSDU and thus further contain multiple MSDUs, which need their own buffer each. Increase the number of buffers to avoid running out in high-throughput scenarios.
Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Gregory Greenman gregory.greenman@intel.com Link: https://lore.kernel.org/r/20230830112059.824e522927f1.Ie5b4a2d3953072b9d7605... Signed-off-by: Johannes Berg johannes.berg@intel.com Stable-dep-of: 08365d3b9140 ("wifi: iwlwifi: mvm: fix netif csum flags") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/intel/iwlwifi/cfg/bz.c | 10 ++++------ drivers/net/wireless/intel/iwlwifi/cfg/sc.c | 8 +++----- 2 files changed, 7 insertions(+), 11 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/cfg/bz.c b/drivers/net/wireless/intel/iwlwifi/cfg/bz.c index b9893b22e41da..3d223014cfe6d 100644 --- a/drivers/net/wireless/intel/iwlwifi/cfg/bz.c +++ b/drivers/net/wireless/intel/iwlwifi/cfg/bz.c @@ -134,12 +134,10 @@ static const struct iwl_base_params iwl_bz_base_params = { .ht_params = &iwl_gl_a_ht_params
/* - * If the device doesn't support HE, no need to have that many buffers. - * These sizes were picked according to 8 MSDUs inside 256 A-MSDUs in an + * This size was picked according to 8 MSDUs inside 512 A-MSDUs in an * A-MPDU, with additional overhead to account for processing time. */ -#define IWL_NUM_RBDS_NON_HE 512 -#define IWL_NUM_RBDS_BZ_HE 4096 +#define IWL_NUM_RBDS_BZ_EHT (512 * 16)
const struct iwl_cfg_trans_params iwl_bz_trans_cfg = { .device_family = IWL_DEVICE_FAMILY_BZ, @@ -161,7 +159,7 @@ const struct iwl_cfg iwl_cfg_bz = { .uhb_supported = true, IWL_DEVICE_BZ, .features = IWL_TX_CSUM_NETIF_FLAGS_BZ | NETIF_F_RXCSUM, - .num_rbds = IWL_NUM_RBDS_BZ_HE, + .num_rbds = IWL_NUM_RBDS_BZ_EHT, };
const struct iwl_cfg iwl_cfg_gl = { @@ -169,7 +167,7 @@ const struct iwl_cfg iwl_cfg_gl = { .uhb_supported = true, IWL_DEVICE_BZ, .features = IWL_TX_CSUM_NETIF_FLAGS_BZ | NETIF_F_RXCSUM, - .num_rbds = IWL_NUM_RBDS_BZ_HE, + .num_rbds = IWL_NUM_RBDS_BZ_EHT, };
diff --git a/drivers/net/wireless/intel/iwlwifi/cfg/sc.c b/drivers/net/wireless/intel/iwlwifi/cfg/sc.c index ad283fd22e2a2..d6243025993ea 100644 --- a/drivers/net/wireless/intel/iwlwifi/cfg/sc.c +++ b/drivers/net/wireless/intel/iwlwifi/cfg/sc.c @@ -127,12 +127,10 @@ static const struct iwl_base_params iwl_sc_base_params = { .ht_params = &iwl_22000_ht_params
/* - * If the device doesn't support HE, no need to have that many buffers. - * These sizes were picked according to 8 MSDUs inside 256 A-MSDUs in an + * This size was picked according to 8 MSDUs inside 512 A-MSDUs in an * A-MPDU, with additional overhead to account for processing time. */ -#define IWL_NUM_RBDS_NON_HE 512 -#define IWL_NUM_RBDS_SC_HE 4096 +#define IWL_NUM_RBDS_SC_EHT (512 * 16)
const struct iwl_cfg_trans_params iwl_sc_trans_cfg = { .device_family = IWL_DEVICE_FAMILY_SC, @@ -154,7 +152,7 @@ const struct iwl_cfg iwl_cfg_sc = { .uhb_supported = true, IWL_DEVICE_SC, .features = IWL_TX_CSUM_NETIF_FLAGS_BZ | NETIF_F_RXCSUM, - .num_rbds = IWL_NUM_RBDS_SC_HE, + .num_rbds = IWL_NUM_RBDS_SC_EHT, };
MODULE_FIRMWARE(IWL_SC_A_FM_B_FW_MODULE_FIRMWARE(IWL_SC_UCODE_API_MAX));