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Merge branch 'bnxt_en-fixes'

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Michael Chan says:

====================
bnxt_en: Bug fixes.

The first patch fixes an error recovery regression just introduced
about a week ago.  The other two patches fix issues related to
freeing rings in the bnxt_close() path under error conditions.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2021-09-13 12:31:13 +01:00
commit 2049eb0d20
1 changed files with 29 additions and 4 deletions
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33
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View file

@ -2213,12 +2213,11 @@ static int bnxt_async_event_process(struct bnxt *bp,
DIV_ROUND_UP(fw_health->polling_dsecs * HZ, DIV_ROUND_UP(fw_health->polling_dsecs * HZ,
bp->current_interval * 10); bp->current_interval * 10);
fw_health->tmr_counter = fw_health->tmr_multiplier; fw_health->tmr_counter = fw_health->tmr_multiplier;
if (!fw_health->enabled) { if (!fw_health->enabled)
fw_health->last_fw_heartbeat = fw_health->last_fw_heartbeat =
bnxt_fw_health_readl(bp, BNXT_FW_HEARTBEAT_REG); bnxt_fw_health_readl(bp, BNXT_FW_HEARTBEAT_REG);
fw_health->last_fw_reset_cnt = fw_health->last_fw_reset_cnt =
bnxt_fw_health_readl(bp, BNXT_FW_RESET_CNT_REG); bnxt_fw_health_readl(bp, BNXT_FW_RESET_CNT_REG);
}
netif_info(bp, drv, bp->dev, netif_info(bp, drv, bp->dev,
"Error recovery info: error recovery[1], master[%d], reset count[%u], health status: 0x%x\n", "Error recovery info: error recovery[1], master[%d], reset count[%u], health status: 0x%x\n",
fw_health->master, fw_health->last_fw_reset_cnt, fw_health->master, fw_health->last_fw_reset_cnt,
@ -2730,6 +2729,9 @@ static void bnxt_free_tx_skbs(struct bnxt *bp)
struct bnxt_tx_ring_info *txr = &bp->tx_ring[i]; struct bnxt_tx_ring_info *txr = &bp->tx_ring[i];
int j; int j;
if (!txr->tx_buf_ring)
continue;
for (j = 0; j < max_idx;) { for (j = 0; j < max_idx;) {
struct bnxt_sw_tx_bd *tx_buf = &txr->tx_buf_ring[j]; struct bnxt_sw_tx_bd *tx_buf = &txr->tx_buf_ring[j];
struct sk_buff *skb; struct sk_buff *skb;
@ -2814,6 +2816,9 @@ static void bnxt_free_one_rx_ring_skbs(struct bnxt *bp, int ring_nr)
} }
skip_rx_tpa_free: skip_rx_tpa_free:
if (!rxr->rx_buf_ring)
goto skip_rx_buf_free;
for (i = 0; i < max_idx; i++) { for (i = 0; i < max_idx; i++) {
struct bnxt_sw_rx_bd *rx_buf = &rxr->rx_buf_ring[i]; struct bnxt_sw_rx_bd *rx_buf = &rxr->rx_buf_ring[i];
dma_addr_t mapping = rx_buf->mapping; dma_addr_t mapping = rx_buf->mapping;
@ -2836,6 +2841,11 @@ skip_rx_tpa_free:
kfree(data); kfree(data);
} }
} }
skip_rx_buf_free:
if (!rxr->rx_agg_ring)
goto skip_rx_agg_free;
for (i = 0; i < max_agg_idx; i++) { for (i = 0; i < max_agg_idx; i++) {
struct bnxt_sw_rx_agg_bd *rx_agg_buf = &rxr->rx_agg_ring[i]; struct bnxt_sw_rx_agg_bd *rx_agg_buf = &rxr->rx_agg_ring[i];
struct page *page = rx_agg_buf->page; struct page *page = rx_agg_buf->page;
@ -2852,6 +2862,8 @@ skip_rx_tpa_free:
__free_page(page); __free_page(page);
} }
skip_rx_agg_free:
if (rxr->rx_page) { if (rxr->rx_page) {
__free_page(rxr->rx_page); __free_page(rxr->rx_page);
rxr->rx_page = NULL; rxr->rx_page = NULL;
@ -2900,6 +2912,9 @@ static void bnxt_free_ring(struct bnxt *bp, struct bnxt_ring_mem_info *rmem)
struct pci_dev *pdev = bp->pdev; struct pci_dev *pdev = bp->pdev;
int i; int i;
if (!rmem->pg_arr)
goto skip_pages;
for (i = 0; i < rmem->nr_pages; i++) { for (i = 0; i < rmem->nr_pages; i++) {
if (!rmem->pg_arr[i]) if (!rmem->pg_arr[i])
continue; continue;
@ -2909,6 +2924,7 @@ static void bnxt_free_ring(struct bnxt *bp, struct bnxt_ring_mem_info *rmem)
rmem->pg_arr[i] = NULL; rmem->pg_arr[i] = NULL;
} }
skip_pages:
if (rmem->pg_tbl) { if (rmem->pg_tbl) {
size_t pg_tbl_size = rmem->nr_pages * 8; size_t pg_tbl_size = rmem->nr_pages * 8;
@ -3228,10 +3244,14 @@ static int bnxt_alloc_tx_rings(struct bnxt *bp)
static void bnxt_free_cp_arrays(struct bnxt_cp_ring_info *cpr) static void bnxt_free_cp_arrays(struct bnxt_cp_ring_info *cpr)
{ {
struct bnxt_ring_struct *ring = &cpr->cp_ring_struct;
kfree(cpr->cp_desc_ring); kfree(cpr->cp_desc_ring);
cpr->cp_desc_ring = NULL; cpr->cp_desc_ring = NULL;
ring->ring_mem.pg_arr = NULL;
kfree(cpr->cp_desc_mapping); kfree(cpr->cp_desc_mapping);
cpr->cp_desc_mapping = NULL; cpr->cp_desc_mapping = NULL;
ring->ring_mem.dma_arr = NULL;
} }
static int bnxt_alloc_cp_arrays(struct bnxt_cp_ring_info *cpr, int n) static int bnxt_alloc_cp_arrays(struct bnxt_cp_ring_info *cpr, int n)
@ -12207,6 +12227,11 @@ static void bnxt_fw_reset_task(struct work_struct *work)
return; return;
} }
if ((bp->fw_cap & BNXT_FW_CAP_ERROR_RECOVERY) &&
bp->fw_health->enabled) {
bp->fw_health->last_fw_reset_cnt =
bnxt_fw_health_readl(bp, BNXT_FW_RESET_CNT_REG);
}
bp->fw_reset_state = 0; bp->fw_reset_state = 0;
/* Make sure fw_reset_state is 0 before clearing the flag */ /* Make sure fw_reset_state is 0 before clearing the flag */
smp_mb__before_atomic(); smp_mb__before_atomic();