diff options
Diffstat (limited to 'debian/patches/features/all/ena/0008-net-ena-explicit-casting-and-initialization-and-clea.patch')
| -rw-r--r-- | debian/patches/features/all/ena/0008-net-ena-explicit-casting-and-initialization-and-clea.patch | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/debian/patches/features/all/ena/0008-net-ena-explicit-casting-and-initialization-and-clea.patch b/debian/patches/features/all/ena/0008-net-ena-explicit-casting-and-initialization-and-clea.patch new file mode 100644 index 000000000..59ea0566a --- /dev/null +++ b/debian/patches/features/all/ena/0008-net-ena-explicit-casting-and-initialization-and-clea.patch @@ -0,0 +1,223 @@ +From: Arthur Kiyanovski <akiyano@amazon.com> +Date: Thu, 11 Oct 2018 11:26:22 +0300 +Subject: [PATCH 08/19] net: ena: explicit casting and initialization, and + clearer error handling +Origin: https://git.kernel.org/linus/bd791175a6432d24fc5d7b348304276027372545 + +Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + drivers/net/ethernet/amazon/ena/ena_com.c | 39 ++++++++++++-------- + drivers/net/ethernet/amazon/ena/ena_netdev.c | 5 +-- + drivers/net/ethernet/amazon/ena/ena_netdev.h | 22 +++++------ + 3 files changed, 36 insertions(+), 30 deletions(-) + +Index: linux/drivers/net/ethernet/amazon/ena/ena_com.c +=================================================================== +--- linux.orig/drivers/net/ethernet/amazon/ena/ena_com.c ++++ linux/drivers/net/ethernet/amazon/ena/ena_com.c +@@ -235,7 +235,7 @@ static struct ena_comp_ctx *__ena_com_su + tail_masked = admin_queue->sq.tail & queue_size_mask; + + /* In case of queue FULL */ +- cnt = atomic_read(&admin_queue->outstanding_cmds); ++ cnt = (u16)atomic_read(&admin_queue->outstanding_cmds); + if (cnt >= admin_queue->q_depth) { + pr_debug("admin queue is full.\n"); + admin_queue->stats.out_of_space++; +@@ -304,7 +304,7 @@ static struct ena_comp_ctx *ena_com_subm + struct ena_admin_acq_entry *comp, + size_t comp_size_in_bytes) + { +- unsigned long flags; ++ unsigned long flags = 0; + struct ena_comp_ctx *comp_ctx; + + spin_lock_irqsave(&admin_queue->q_lock, flags); +@@ -332,7 +332,7 @@ static int ena_com_init_io_sq(struct ena + + memset(&io_sq->desc_addr, 0x0, sizeof(io_sq->desc_addr)); + +- io_sq->dma_addr_bits = ena_dev->dma_addr_bits; ++ io_sq->dma_addr_bits = (u8)ena_dev->dma_addr_bits; + io_sq->desc_entry_size = + (io_sq->direction == ENA_COM_IO_QUEUE_DIRECTION_TX) ? + sizeof(struct ena_eth_io_tx_desc) : +@@ -486,7 +486,7 @@ static void ena_com_handle_admin_complet + + /* Go over all the completions */ + while ((READ_ONCE(cqe->acq_common_descriptor.flags) & +- ENA_ADMIN_ACQ_COMMON_DESC_PHASE_MASK) == phase) { ++ ENA_ADMIN_ACQ_COMMON_DESC_PHASE_MASK) == phase) { + /* Do not read the rest of the completion entry before the + * phase bit was validated + */ +@@ -537,7 +537,8 @@ static int ena_com_comp_status_to_errno( + static int ena_com_wait_and_process_admin_cq_polling(struct ena_comp_ctx *comp_ctx, + struct ena_com_admin_queue *admin_queue) + { +- unsigned long flags, timeout; ++ unsigned long flags = 0; ++ unsigned long timeout; + int ret; + + timeout = jiffies + usecs_to_jiffies(admin_queue->completion_timeout); +@@ -736,7 +737,7 @@ static int ena_com_config_llq_info(struc + static int ena_com_wait_and_process_admin_cq_interrupts(struct ena_comp_ctx *comp_ctx, + struct ena_com_admin_queue *admin_queue) + { +- unsigned long flags; ++ unsigned long flags = 0; + int ret; + + wait_for_completion_timeout(&comp_ctx->wait_event, +@@ -782,7 +783,7 @@ static u32 ena_com_reg_bar_read32(struct + volatile struct ena_admin_ena_mmio_req_read_less_resp *read_resp = + mmio_read->read_resp; + u32 mmio_read_reg, ret, i; +- unsigned long flags; ++ unsigned long flags = 0; + u32 timeout = mmio_read->reg_read_to; + + might_sleep(); +@@ -1426,7 +1427,7 @@ void ena_com_abort_admin_commands(struct + void ena_com_wait_for_abort_completion(struct ena_com_dev *ena_dev) + { + struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; +- unsigned long flags; ++ unsigned long flags = 0; + + spin_lock_irqsave(&admin_queue->q_lock, flags); + while (atomic_read(&admin_queue->outstanding_cmds) != 0) { +@@ -1470,7 +1471,7 @@ bool ena_com_get_admin_running_state(str + void ena_com_set_admin_running_state(struct ena_com_dev *ena_dev, bool state) + { + struct ena_com_admin_queue *admin_queue = &ena_dev->admin_queue; +- unsigned long flags; ++ unsigned long flags = 0; + + spin_lock_irqsave(&admin_queue->q_lock, flags); + ena_dev->admin_queue.running_state = state; +@@ -1504,7 +1505,7 @@ int ena_com_set_aenq_config(struct ena_c + } + + if ((get_resp.u.aenq.supported_groups & groups_flag) != groups_flag) { +- pr_warn("Trying to set unsupported aenq events. supported flag: %x asked flag: %x\n", ++ pr_warn("Trying to set unsupported aenq events. supported flag: 0x%x asked flag: 0x%x\n", + get_resp.u.aenq.supported_groups, groups_flag); + return -EOPNOTSUPP; + } +@@ -1652,7 +1653,7 @@ int ena_com_mmio_reg_read_request_init(s + sizeof(*mmio_read->read_resp), + &mmio_read->read_resp_dma_addr, GFP_KERNEL); + if (unlikely(!mmio_read->read_resp)) +- return -ENOMEM; ++ goto err; + + ena_com_mmio_reg_read_request_write_dev_addr(ena_dev); + +@@ -1661,6 +1662,10 @@ int ena_com_mmio_reg_read_request_init(s + mmio_read->readless_supported = true; + + return 0; ++ ++err: ++ ++ return -ENOMEM; + } + + void ena_com_set_mmio_read_mode(struct ena_com_dev *ena_dev, bool readless_supported) +@@ -1961,6 +1966,7 @@ void ena_com_aenq_intr_handler(struct en + struct ena_admin_aenq_entry *aenq_e; + struct ena_admin_aenq_common_desc *aenq_common; + struct ena_com_aenq *aenq = &dev->aenq; ++ unsigned long long timestamp; + ena_aenq_handler handler_cb; + u16 masked_head, processed = 0; + u8 phase; +@@ -1978,10 +1984,11 @@ void ena_com_aenq_intr_handler(struct en + */ + dma_rmb(); + ++ timestamp = ++ (unsigned long long)aenq_common->timestamp_low | ++ ((unsigned long long)aenq_common->timestamp_high << 32); + pr_debug("AENQ! Group[%x] Syndrom[%x] timestamp: [%llus]\n", +- aenq_common->group, aenq_common->syndrom, +- (u64)aenq_common->timestamp_low + +- ((u64)aenq_common->timestamp_high << 32)); ++ aenq_common->group, aenq_common->syndrom, timestamp); + + /* Handle specific event*/ + handler_cb = ena_com_get_specific_aenq_cb(dev, +@@ -2623,8 +2630,8 @@ int ena_com_allocate_host_info(struct en + if (unlikely(!host_attr->host_info)) + return -ENOMEM; + +- host_attr->host_info->ena_spec_version = +- ((ENA_COMMON_SPEC_VERSION_MAJOR << ENA_REGS_VERSION_MAJOR_VERSION_SHIFT) | ++ host_attr->host_info->ena_spec_version = ((ENA_COMMON_SPEC_VERSION_MAJOR << ++ ENA_REGS_VERSION_MAJOR_VERSION_SHIFT) | + (ENA_COMMON_SPEC_VERSION_MINOR)); + + return 0; +Index: linux/drivers/net/ethernet/amazon/ena/ena_netdev.c +=================================================================== +--- linux.orig/drivers/net/ethernet/amazon/ena/ena_netdev.c ++++ linux/drivers/net/ethernet/amazon/ena/ena_netdev.c +@@ -2604,15 +2604,14 @@ static void ena_destroy_device(struct en + + dev_up = test_bit(ENA_FLAG_DEV_UP, &adapter->flags); + adapter->dev_up_before_reset = dev_up; +- + if (!graceful) + ena_com_set_admin_running_state(ena_dev, false); + + if (test_bit(ENA_FLAG_DEV_UP, &adapter->flags)) + ena_down(adapter); + +- /* Before releasing the ENA resources, a device reset is required. +- * (to prevent the device from accessing them). ++ /* Stop the device from sending AENQ events (in case reset flag is set ++ * and device is up, ena_close already reset the device + * In case the reset flag is set and the device is up, ena_down() + * already perform the reset, so it can be skipped. + */ +Index: linux/drivers/net/ethernet/amazon/ena/ena_netdev.h +=================================================================== +--- linux.orig/drivers/net/ethernet/amazon/ena/ena_netdev.h ++++ linux/drivers/net/ethernet/amazon/ena/ena_netdev.h +@@ -61,6 +61,17 @@ + #define ENA_ADMIN_MSIX_VEC 1 + #define ENA_MAX_MSIX_VEC(io_queues) (ENA_ADMIN_MSIX_VEC + (io_queues)) + ++/* The ENA buffer length fields is 16 bit long. So when PAGE_SIZE == 64kB the ++ * driver passes 0. ++ * Since the max packet size the ENA handles is ~9kB limit the buffer length to ++ * 16kB. ++ */ ++#if PAGE_SIZE > SZ_16K ++#define ENA_PAGE_SIZE SZ_16K ++#else ++#define ENA_PAGE_SIZE PAGE_SIZE ++#endif ++ + #define ENA_MIN_MSIX_VEC 2 + + #define ENA_REG_BAR 0 +@@ -362,15 +373,4 @@ void ena_dump_stats_to_buf(struct ena_ad + + int ena_get_sset_count(struct net_device *netdev, int sset); + +-/* The ENA buffer length fields is 16 bit long. So when PAGE_SIZE == 64kB the +- * driver passas 0. +- * Since the max packet size the ENA handles is ~9kB limit the buffer length to +- * 16kB. +- */ +-#if PAGE_SIZE > SZ_16K +-#define ENA_PAGE_SIZE SZ_16K +-#else +-#define ENA_PAGE_SIZE PAGE_SIZE +-#endif +- + #endif /* !(ENA_H) */ |