From b8056e8434b037fdab08158fea99ed7bc8ef3a74 Mon Sep 17 00:00:00 2001 From: Michael Chan Date: Mon, 25 May 2020 17:41:17 -0400 Subject: [PATCH 1/3] bnxt_en: Fix accumulation of bp->net_stats_prev. We have logic to maintain network counters across resets by storing the counters in bp->net_stats_prev before reset. But not all resets will clear the counters. Certain resets that don't need to change the number of rings do not clear the counters. The current logic accumulates the counters before all resets, causing big jumps in the counters after some resets, such as ethtool -G. Fix it by only accumulating the counters during reset if the irq_re_init parameter is set. The parameter signifies that all rings and interrupts will be reset and that means that the counters will also be reset. Reported-by: Vijayendra Suman Fixes: b8875ca356f1 ("bnxt_en: Save ring statistics before reset.") Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index d1a83716d934..abb203c019ce 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -9310,7 +9310,7 @@ static void __bnxt_close_nic(struct bnxt *bp, bool irq_re_init, bnxt_free_skbs(bp); /* Save ring stats before shutdown */ - if (bp->bnapi) + if (bp->bnapi && irq_re_init) bnxt_get_ring_stats(bp, &bp->net_stats_prev); if (irq_re_init) { bnxt_free_irq(bp); From 95ec1f470b976858264d7635a6ef76bc33c3875b Mon Sep 17 00:00:00 2001 From: Vasundhara Volam Date: Mon, 25 May 2020 17:41:18 -0400 Subject: [PATCH 2/3] bnxt_en: Fix return code to "flash_device". When NVRAM directory is not found, return the error code properly as per firmware command failure instead of the hardcode -ENOBUFS. Fixes: 3a707bed13b7 ("bnxt_en: Return -EAGAIN if fw command returns BUSY") Signed-off-by: Vasundhara Volam Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c index 34046a6286e8..360f9a95c1d5 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c @@ -2012,11 +2012,12 @@ int bnxt_flash_package_from_file(struct net_device *dev, const char *filename, bnxt_hwrm_fw_set_time(bp); - if (bnxt_find_nvram_item(dev, BNX_DIR_TYPE_UPDATE, - BNX_DIR_ORDINAL_FIRST, BNX_DIR_EXT_NONE, - &index, &item_len, NULL) != 0) { + rc = bnxt_find_nvram_item(dev, BNX_DIR_TYPE_UPDATE, + BNX_DIR_ORDINAL_FIRST, BNX_DIR_EXT_NONE, + &index, &item_len, NULL); + if (rc) { netdev_err(dev, "PKG update area not created in nvram\n"); - return -ENOBUFS; + return rc; } rc = request_firmware(&fw, filename, &dev->dev); From 2a5a8800fa915bd9bc272c91ca64728e6aa84c0a Mon Sep 17 00:00:00 2001 From: Edwin Peer Date: Mon, 25 May 2020 17:41:19 -0400 Subject: [PATCH 3/3] bnxt_en: fix firmware message length endianness The explicit mask and shift is not the appropriate way to parse fields out of a little endian struct. The length field is internally __le16 and the strategy employed only happens to work on little endian machines because the offset used is actually incorrect (length is at offset 6). Also remove the related and no longer used definitions from bnxt.h. Fixes: 845adfe40c2a ("bnxt_en: Improve valid bit checking in firmware response message.") Signed-off-by: Edwin Peer Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 14 ++++---------- drivers/net/ethernet/broadcom/bnxt/bnxt.h | 5 ----- 2 files changed, 4 insertions(+), 15 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index abb203c019ce..58e0d9a781e9 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -4176,14 +4176,12 @@ static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len, int i, intr_process, rc, tmo_count; struct input *req = msg; u32 *data = msg; - __le32 *resp_len; u8 *valid; u16 cp_ring_id, len = 0; struct hwrm_err_output *resp = bp->hwrm_cmd_resp_addr; u16 max_req_len = BNXT_HWRM_MAX_REQ_LEN; struct hwrm_short_input short_input = {0}; u32 doorbell_offset = BNXT_GRCPF_REG_CHIMP_COMM_TRIGGER; - u8 *resp_addr = (u8 *)bp->hwrm_cmd_resp_addr; u32 bar_offset = BNXT_GRCPF_REG_CHIMP_COMM; u16 dst = BNXT_HWRM_CHNL_CHIMP; @@ -4201,7 +4199,6 @@ static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len, bar_offset = BNXT_GRCPF_REG_KONG_COMM; doorbell_offset = BNXT_GRCPF_REG_KONG_COMM_TRIGGER; resp = bp->hwrm_cmd_kong_resp_addr; - resp_addr = (u8 *)bp->hwrm_cmd_kong_resp_addr; } memset(resp, 0, PAGE_SIZE); @@ -4270,7 +4267,6 @@ static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len, tmo_count = HWRM_SHORT_TIMEOUT_COUNTER; timeout = timeout - HWRM_SHORT_MIN_TIMEOUT * HWRM_SHORT_TIMEOUT_COUNTER; tmo_count += DIV_ROUND_UP(timeout, HWRM_MIN_TIMEOUT); - resp_len = (__le32 *)(resp_addr + HWRM_RESP_LEN_OFFSET); if (intr_process) { u16 seq_id = bp->hwrm_intr_seq_id; @@ -4298,9 +4294,8 @@ static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len, le16_to_cpu(req->req_type)); return -EBUSY; } - len = (le32_to_cpu(*resp_len) & HWRM_RESP_LEN_MASK) >> - HWRM_RESP_LEN_SFT; - valid = resp_addr + len - 1; + len = le16_to_cpu(resp->resp_len); + valid = ((u8 *)resp) + len - 1; } else { int j; @@ -4311,8 +4306,7 @@ static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len, */ if (test_bit(BNXT_STATE_FW_FATAL_COND, &bp->state)) return -EBUSY; - len = (le32_to_cpu(*resp_len) & HWRM_RESP_LEN_MASK) >> - HWRM_RESP_LEN_SFT; + len = le16_to_cpu(resp->resp_len); if (len) break; /* on first few passes, just barely sleep */ @@ -4334,7 +4328,7 @@ static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len, } /* Last byte of resp contains valid bit */ - valid = resp_addr + len - 1; + valid = ((u8 *)resp) + len - 1; for (j = 0; j < HWRM_VALID_BIT_DELAY_USEC; j++) { /* make sure we read from updated DMA memory */ dma_rmb(); diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index f6a3250ef1c5..3d39638521d6 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -656,11 +656,6 @@ struct nqe_cn { #define HWRM_CMD_TIMEOUT (bp->hwrm_cmd_timeout) #define HWRM_RESET_TIMEOUT ((HWRM_CMD_TIMEOUT) * 4) #define HWRM_COREDUMP_TIMEOUT ((HWRM_CMD_TIMEOUT) * 12) -#define HWRM_RESP_ERR_CODE_MASK 0xffff -#define HWRM_RESP_LEN_OFFSET 4 -#define HWRM_RESP_LEN_MASK 0xffff0000 -#define HWRM_RESP_LEN_SFT 16 -#define HWRM_RESP_VALID_MASK 0xff000000 #define BNXT_HWRM_REQ_MAX_SIZE 128 #define BNXT_HWRM_REQS_PER_PAGE (BNXT_PAGE_SIZE / \ BNXT_HWRM_REQ_MAX_SIZE)